US20020163728A1 - Optical sheets or overlays - Google Patents
Optical sheets or overlays Download PDFInfo
- Publication number
- US20020163728A1 US20020163728A1 US09/880,765 US88076501A US2002163728A1 US 20020163728 A1 US20020163728 A1 US 20020163728A1 US 88076501 A US88076501 A US 88076501A US 2002163728 A1 US2002163728 A1 US 2002163728A1
- Authority
- US
- United States
- Prior art keywords
- overlay
- field
- structures
- view
- polyhedral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
- G06F1/1607—Arrangements to support accessories mechanically attached to the display housing
- G06F1/1609—Arrangements to support accessories mechanically attached to the display housing to support filters or lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
- H01J2329/86—Vessels
- H01J2329/89—Optical components structurally combined with the vessel
- H01J2329/897—Lenses
Definitions
- This invention relates to single-sheet light transmitting sheets or overlays, and to arrangements for using such sheets or overlays.
- the sheets or overlays may, by way of example, be used to control the field-of-view or range of angles over which an image or scene can be discerned, by either expanding, shifting, and/or screening portions of the image or scene, on any side and in any selected direction.
- the sheets or overlays may be used collect or capture light, to permit viewing of different images or image portions at different angles relatively to a display screen, to separate or combine images, or to serve as retroreflectors.
- the present invention proposes to apply the image expansion or restriction principles described in the copending applications to a variety of novel sheet structures, in which the parallel grooves of the sheet are spaced apart, or are replaced by arrays of structural elements having polyhedral, frustoconical, or conical shapes, and/or that are configured as solids arranged in an interlocking or honeycomb pattern.
- the present invention proposes to provide a single-sheet light transmitting overlay for a display screens or windows in which one surface is formed or cast to include the above-mentioned spaced apart parallel grooves or polyhedral, frustoconical, or conical structural elements, and/or solids arranged in an interlocking or honeycomb pattern, so that the structural elements shift or expand the field-of-view of an image viewed through the overlay. Furthermore, by selectively treating any of the surfaces of the structural elements, a field-of-view restriction or screening effect may be achieved without affecting the image shifting or expansion effects of the remaining untreated surfaces.
- novel sheet structures of the prevent invention may be used to capture light, for example in solar panels, to separate or combine images, and if provided with a reflective backing, to serve as retroreflectors.
- microprism sheets in general, including microprism sheets having treated surfaces and surface treatment methods therefor:
- an overlay in the form of a single sheet of light transmitting material having a plurality of parallel, spaced apart v-shaped grooves, or a plurality of polyhedral, conical, or frustoconical lens structures, and/or solid (i.e., three-dimensional) lens structures arranged in an interlocking or honeycomb pattern, and that serve to shift or expand the field-or-view of an image or scene viewed through the sheet, that direct incident light in a desired manner, or that have the effect of combining or separating images, depending on the viewing angle.
- any angled or curved surface may be treated to attenuate or scatter light, thereby providing a privacy screening effect with respect to a range of angles determined by the orientation of the surfaces.
- the surface treatments applied may consist of any surface treatments that have the effect of absorbing or scattering light and that can be applied to selected surfaces by means of a mask, control of the surface treatment tool, or use of an appropriate die, including application of opaque, light diffusing, or polarizing coatings, delustering, chemical or laser etching, casting, and differential polishing of previously roughened surfaces, as well as any other surface treatment methods described in the above-cited patents or patent applications, or that are known or may become known to those skilled in the art.
- a privacy screening effect can be obtained by providing a polarizing coating on an entire back surface of the overlay, and by oppositely polarizing selected surfaces on the front side of the overlay.
- the overlays of the invention may be provided with non-directional treatments such as reflective coatings (useful in forming retroreflectors), radiation shielding coatings, or embedded images or graphics.
- the extremely versatile overlays of the invention may be arranged to facilitate light collection by directing light incident light from a relatively wide field of view into a light guide (which is especially useful for solar collectors), or the overlays may be provided with polarizing or other coatings that facilitate image combination or separation.
- the overlays of the preferred embodiments of the invention are especially suitable for use in restricting or facilitating viewing by persons situated above or below, or to the side of, a computer monitor or television screen.
- the field-of-view controlling overlays may be used in any of a variety of potential applications that might involve restricted or enhanced viewing of an image or scene, including applications in which the overlays of the invention are applied to windows to serve as blinds.
- the privacy screens of the invention When applied to a window, the privacy screens of the invention not only can provide privacy and restrict incoming light, but also can modify the view through the window by using the prisms or lenticular structures of the overlay to bend light is selected directions, or modify the view by adding images or graphics visible at selected angles.
- FIG. 1 is a perspective view of one of the preferred field-of-view controlling sheets used as a computer display screen overlay.
- FIG. 2 is a perspective view of a preferred embodiment of the field-of-view controlling overlay of FIG. 1, in which the single sheet that makes up the overlay includes parallel, spaced apart grooves.
- FIG. 3 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated tetrahedral structures arranged in staggered rows according to the principles of a second preferred embodiment of the invention.
- FIG. 4 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated tetrahedral structures arranged in a grid pattern according to the principles of a third preferred embodiment of the invention.
- FIG. 5 is a perspective view of a portion of a single sheet field-of-view controlling overlay including tetrahedral structures arranged in staggered rows according to the principles of a fourth preferred embodiment of the invention.
- FIG. 6 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated tetrahedral structures arranged in a grid pattern according to the principles of a fifth preferred embodiment of the invention.
- FIG. 7 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated hexahedral structures arranged in a honeycomb pattern according to the principles of a sixth preferred embodiment of the invention.
- FIG. 8 is a perspective view of a portion of a single sheet field-of-view controlling overlay including tetrahedral structures arranged in a honeycomb pattern according to the principles of a seventh preferred embodiment of the invention.
- FIG. 9 is a plan view of the overlay of FIG. 3, in which no surfaces are treated to provide a privacy screening effect.
- FIGS. 10 - 13 are plan views of the overlay of FIG. 3, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 14 is a plan view of the overlay of FIG. 4, in which no surfaces are treated to provide a privacy screening effect.
- FIGS. 15 - 18 are plan views of the overlay of FIG. 4, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 19 is a plan view of the overlay of FIG. 5, in which no surfaces are treated to provide a privacy screening effect.
- FIGS. 20 - 23 are plan views of the overlay of FIG. 5, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 24 is a plan view of the overlay of FIG. 6, in which no surfaces are treated to provide a privacy screening effect.
- FIGS. 25 - 28 are plan views of the overlay of FIG. 6, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 29 is a plan view of the overlay of FIG. 7, in which no surfaces are treated to provide a privacy screening effect.
- FIGS. 30 - 39 are plan views of the overlay of FIG. 7, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 40 is a plan view of the overlay of FIG. 8, in which no surfaces are treated to provide a privacy screening effect.
- FIGS. 41 - 50 are plan views of the overlay of FIG. 8, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 51 is a perspective view of a portion of a single sheet field-of-view controlling overlay including frustoconical structures according to the principles of an eighth preferred embodiment of the invention.
- FIG. 52 is a plan view of the overlay of FIG. 51, in which one surface is treated to control the viewing angle in different directions.
- FIG. 53 is a plan view of the overlay of FIG. 51, in which no surface is treated to provide a privacy screening effect.
- FIG. 54 is a perspective view of a portion of a single sheet field-of-view controlling overlay including conical structures in accordance with the principles of a ninth preferred embodiment of the invention.
- FIGS. 55 - 57 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking or honeycomb arrangement of tetrahedral solids arranged to include a lens surface in accordance with the principles of a tenth preferred embodiment of the invention.
- FIGS. 58 - 60 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking or honeycomb arrangement of tetrahedral solids arranged to include lens-shaped side surfaces in accordance with the principles of an eleventh preferred embodiment of the invention.
- FIGS. 61 - 63 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking or honeycomb arrangement of lens-shaped solids in accordance with the principles of a twelfth preferred embodiment of the invention.
- FIGS. 64 - 66 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of truncated non-regular pyramidal structures in accordance with the principles of a thirteenth embodiment of the invention.
- FIGS. 67 - 69 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of non-regular pyramidal solids arranged to include a lens surface in accordance with the principles of a fourteenth preferred embodiment of the invention.
- FIGS. 70 - 72 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of non-regular pyramidal solids arranged to include lens-shaped side surfaces in accordance with the principles of an fifteenth preferred embodiment of the invention.
- FIGS. 73 - 75 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of lens-shaped solids in accordance with the principles of a sixteenth preferred embodiment of the invention.
- FIGS. 76 and 77 are plan views of a single sheet field-of-view controlling overlay including a honeycomb pattern of lens-shaped solids in accordance with the principles of respective seventeenth and eighteenth preferred embodiments of the invention.
- FIG. 1 illustrates one application of the embodiments illustrated in FIGS. 2 - 50 .
- an overlay 1 designed to be used with the display screen 2 of a computer, to either expand, shift, or restrict the field-of-view in any desired direction or directions, or to separate or combine images.
- the field-of-view could be restricted in order to prevent eavesdroppers from viewing the screen from the left or right sides, but expanded to permit viewing of the screen from above.
- the field-of-view could be expanded or restricted on any number of sides, or on any combination of multiple sides, or the overlay could be arranged such that different images or portions of an image may be viewed through different facets.
- the sheets or overlays illustrated in FIGS. 2 - 77 could be arranged to collect light. This is especially useful in solar panels, since the same principles that permit expansion of the field-of-view can be applied to increasing the efficiency of solar light collection, with the goal of directing the light to a light guide that guides the light to a photo-electric panel, water heater, or other energy conversion device.
- the sheets are provided with a reflecting coating on the surface opposite the lenses or prisms, or on the surfaces of the lenses or prisms, a retroreflective effect can be obtained, in which light incident on the sheet is reflected in a particular direction.
- Overlays or sheets arranged in this manner are especially suitable for use in projection screens, but may also be useful on road signs, nighttime wearing apparel, reflectors for bicycles or other vehicles, and in any other application in which retroreflectivity is utilized.
- FIG. 2 shows a first preferred embodiment of the invention arranged to provide modification for any two opposite sides of field-of-view.
- This embodiment consists of a sheet 3 having parallel, spaced apart v-shaped grooves formed by angled surfaces 4 and 5 .
- the presence of angled surfaces 4 and 5 has the effect of expanding the field-of-view for an image or scene viewed through the sheet 3 .
- the surfaces 6 connecting the grooves are planar, although it is possible to modify surfaces 6 to having a curvature in order to obtain lensing effects.
- the surface treatments applied in this and other embodiments of the invention may consist of any surface treatments that have the effect of absorbing or scattering light and that can be applied to selective surfaces by means of a mask, die, tool, or the like.
- possible surface treatments include delustering, chemical or laser etching, casting, and differential polishing of previously roughened surfaces, as well as any other surface treatment methods described in the above-cited patents or patent applications, or that are known or may become known to those skilled in the art.
- graphic images may be added so that the blocked image or scene is replaced by a graphic image.
- the surfaces that are not “treated” to scatter or attenuate light in order to create a privacy screening effect may nevertheless be treated to enhance transmission of light through the surfaces, for example by polishing, curing, adding transparent protective coatings, and or printing of portions of the surfaces so as to superimpose graphic images on the images being viewed through the screen.
- the term “untreated” is intended to mean “not altered to diffuse or attenuate light.”
- a privacy screening effect can be obtained not only by light scattering or attenuation, but also by polarization.
- a back surface of the overlay is polarized in a first direction, and then selected facets or surfaces on the front side of the overlay are polarized in the opposite direction so that the oppositely polarized facets or surfaces effectively prevent transmission of light through the surfaces.
- the light source itself is polarized, as is the case with a liquid crystal display, privacy screening could be achieved without polarizing the back side of the overlay, so long as the selected facets or surfaces are polarized in a direction opposite the direction of polarization of the display.
- surface treatments may include anti-radiation coatings, polarizing coatings for purposes other than privacy screening, printing, and other surface treatments such as the above mentioned reflective coating, applied either to one or more facets of the prism structures, but possibly also to the opposite side of the sheet.
- the field-of-view controlling arrangement is made up of a sheet that include staggered rows of lenticular elements in the form of truncated tetrahedral structures 100 having five sets of mutually parallel surfaces indicated by reference numerals 101 - 105 .
- the sheet may be used without treatment of any of the surfaces, in which case the field-of-view is increased on four sides, or any one or more of surfaces 101 - 105 may be selectively treated to provide a privacy screening effects, the range of angles of which is determined by the orientations of the treated surfaces.
- FIGS. 4 and 14- 18 illustrate a field-of-view controlling arrangement similar to that of FIGS. 14 - 18 except that the truncated tetrahedral lenticular elements 200 are arranged in a grid rather than in staggered rows. Again, any or none of the surfaces 201 - 205 may be subjected to a light-attenuating or other surface treatment in the manner described above.
- FIGS. 5 and 19- 23 illustrate further embodiments of the invention in which the field-of-view controlling elements are non-truncated tetrahedral structures ( 300 , 400 ) in staggered rows (FIGS. 5 and 19- 23 ) or non-staggered rows (FIGS. 6 and 25- 28 ) and in which any set of surfaces 301 - 304 , 401 - 404 may be subjected to a light attenuating or other surface treatment, while FIGS. 7 , 30 - 39 , 8 , and.
- the field-of-view controlling elements are non-truncated tetrahedral structures ( 300 , 400 ) in staggered rows (FIGS. 5 and 19- 23 ) or non-staggered rows (FIGS. 6 and 25- 28 ) and in which any set of surfaces 301 - 304 , 401 - 404 may be subjected to a light attenuating or other surface treatment, while FIGS. 7 , 30 - 39
- 40 - 50 show corresponding arrangements of truncated or non-truncated hexahedral structures 500 , 600 forming a honeycomb pattern and in which any of surfaces 501 - 507 , 601 - 606 may be treated to create a privacy screening effect, or otherwise treated to facilitate any of the other effects noted above.
- FIGS. 51 - 53 show preferred embodiments of the invention in which the field-of-view controlling elements are frustoconical-shaped structures 700 having surfaces 701 and 702 in which the curved surface 701 which forms sides of the structure may optionally be provided with a light-attenuating surface treatment to provide a 360° privacy screening effect as shown in FIG. 52, or with other surface treatments as noted above.
- the field-of-view controlling elements are frustoconical-shaped structures 700 having surfaces 701 and 702 in which the curved surface 701 which forms sides of the structure may optionally be provided with a light-attenuating surface treatment to provide a 360° privacy screening effect as shown in FIG. 52, or with other surface treatments as noted above.
- FIG. 54 shows a preferred embodiment of the invention in which the field-of-view controlling elements are conical structures 800 having surfaces 801 .
- This embodiment is primarily for field-of-view expansion since it would be very difficult to selectively treat portions of the conical surfaces in such a way as to still permit viewing of an image through the overlay, although non-selective treatments may of course be applied to either side of the sheet or overlay.
- One advantage of using interlocking solids that form staggered rows or a honeycomb pattern of field-of-view controlling elements is that the staggering or honeycomb pattern reduces the so-called “staircase” effect, which results in distortion or blurring of non-horizontal or vertical lines, caused by the quantum or discrete nature of aligned microprism or lenticular elements.
- non-truncated discrete elements have the advantage of providing maximal glare reduction and expansion of the field-of-view in non-restricted directions.
- FIGS. 55 - 80 Further examples of arrangements utilizing interlocking or honeycomb patterns are found in FIGS. 55 - 80 .
- the arrangements of FIGS. 55 - 63 are similar to those of FIGS. 29 - 39 except that the truncated hexahedral solids depicted in FIGS. 29 - 39 are modified to include lens elements 900 (FIGS. 55 - 57 ), curved side surfaces 901 (FIGS. 58 - 60 ) , or both (FIGS. 61 - 63 ) In the arrangements of FIGS.
- the interlocking solids are truncated non-regular tetrahedra, i.e., tetrahedra with a diamond-shaped rather than square base, having either a flat top surface 902 (FIGS. 64 - 66 , a lens-shaped top surface 903 (FIGS. 67 - 69 ), lens-shaped side surfaces 904 (FIGS. 70 - 72 ), or both (FIGS. 73 - 75 ).
- the interlocking solids may include more complex shapes, such as the multi-faceted structures shown in FIG. 76, in which the two traverse vertical cross-sections have three and four respective sides extending from the plane of the sheet, or the more continuously curved honeycomb arrangement of FIG. 77, which includes an semi-annular mid-portion and conical end portions.
- the single sheet field-of-view controlling overlays of the invention may be used as overlays for video displays, for example to restrict eavesdropping with respect to a computer display.
- the overlays of the invention may be used as privacy screening window coverings in order to achieve a variety of effects not possible with conventional mechanical blinds.
- the prisms or lenticular structures that make up the overlays may be used to bend incoming light and improve the view from the window and, if the view from the window does not include any scenes worth expanding, the entire view may be replaced by images or graphics.
- the dimensions of the structural elements included in the overlays of the various embodiments of the invention are essentially determined by the technology used to form the sheets and to treat the surfaces, and to the intended application, although the pitch of the grooves or lenticular elements is preferably made small enough to eliminate perception of the grooves or lenticular elements, and/or Moiré patterns resulting from parallel arrangement of light transmitting and diffusing surfaces.
- a pitch of less than ten grooves or elements per inch, and preferably less than twenty grooves per inch, will provide the best appearance most applications, although the invention is not in principle limited to particular sheet dimensions or pitches.
Abstract
Description
- This application is a continuation-in-part of copending U.S. patent application Ser. No. 09/846,455, filed May 2, 2001, and incorporated by reference herein.
- 1. Field of the Invention
- This invention relates to single-sheet light transmitting sheets or overlays, and to arrangements for using such sheets or overlays.
- The sheets or overlays may, by way of example, be used to control the field-of-view or range of angles over which an image or scene can be discerned, by either expanding, shifting, and/or screening portions of the image or scene, on any side and in any selected direction.
- Alternatively, the sheets or overlays may be used collect or capture light, to permit viewing of different images or image portions at different angles relatively to a display screen, to separate or combine images, or to serve as retroreflectors.
- 2. Description of Related Art
- Field-of-view expansion overlays made up of conventionally-shaped microprism or lenticular sheets having parallel groove or lens structures are disclosed in copending U.S. Pat. No. 09/780,535, while field-of-view restricting (i.e., privacy screening) overlays using the same types of conventionally configured parallel groove or lens structures are disclosed in copending U.S. patent application Ser. No. 09/481,942.
- The present invention proposes to apply the image expansion or restriction principles described in the copending applications to a variety of novel sheet structures, in which the parallel grooves of the sheet are spaced apart, or are replaced by arrays of structural elements having polyhedral, frustoconical, or conical shapes, and/or that are configured as solids arranged in an interlocking or honeycomb pattern.
- In particular, the present invention proposes to provide a single-sheet light transmitting overlay for a display screens or windows in which one surface is formed or cast to include the above-mentioned spaced apart parallel grooves or polyhedral, frustoconical, or conical structural elements, and/or solids arranged in an interlocking or honeycomb pattern, so that the structural elements shift or expand the field-of-view of an image viewed through the overlay. Furthermore, by selectively treating any of the surfaces of the structural elements, a field-of-view restriction or screening effect may be achieved without affecting the image shifting or expansion effects of the remaining untreated surfaces.
- In addition to provide field-of-view controlling the effects, the novel sheet structures of the prevent invention may be used to capture light, for example in solar panels, to separate or combine images, and if provided with a reflective backing, to serve as retroreflectors.
- By way of background, the following patents are directed to microprism sheets in general, including microprism sheets having treated surfaces and surface treatment methods therefor:
- U.S. Pat. Nos. 5,836,096 (Brauer), 5,512,219 (Rowland et al.) 5,446,594 (Nelson et al.), 5,363,237 (Wakatake), 5,316,359 (Lansinger), 5,208,620 (Mitsutake et al.), 4,708,435 (Yata et al.), 4,309,074 (Granieri), 4,309,073 (Nishimura et al.), 4,206,969 (Cobb et al.) , 3,971,051 (Baker et al.) , 3,902,787 (Sherlock), and 3,718,078 (Plummer),
- In addition, the following patents disclose use of microprism sheets having a single treated surface arranged generally parallel to the direction of image transmission for purposes of glare reduction:
- U.S. Pat. Nos. 4,911,529 (Van De Ven), 4,756,603 (Ohtani), 4,165,920 (Brown), 2,909,770 (Pugsley); the following patents disclose use of lenticular or microprism sheets as isotropic light diffusers in rear projection systems:
- U.S. Pat. Nos. 4,730,897 (McKechnie et al.), 5,400,114 (Yoshida et al.), 5,457,572 (Ishii et al.), 5,581,407 (Mitani et al.), 5,760,955 (Goldenberg et al.), 6,002,829 (Winston et al.), 6,157,491 (Watanabe et al.), 6,025,897 (Weber et al.), and 6,169,633 (Watanabe); and
- the following patents are directed to use of microprism or lenticular sheets to increase the field of view in non-projection or direct sight type LCD systems:
- U.S. Pat. Nos. 5,745,199 and 5,555,476, both to Suzuki et al.
- While these patents disclose a wide variety of uses for microprism or lenticular sheets similar to those disclosed in U.S. patent application Ser. Nos. 09/780,535 and 09/481,942, they do not disclose the particular structural elements shapes of the present invention, or use of such shapes in field-of-view controlling (i.e., expanding, shifting, or restricting) arrangements, image separating or combining arrangements, light collection devices, or as retroreflectors.
- It is accordingly a first objective of the invention to provide more versatile single-sheet, light-transmitting overlays that offer enhanced field-of-view control, permitting the field-of-view of an image or scene to be controlled or restricted from any side or combination of sides, over any range of angles, and without substantially increasing the cost or difficulty of manufacture.
- It is a second objective of the invention to provide field-of-view controlling arrangements utilizing such single-sheet, light-transmitting overlays that provide enhanced field-of-view control.
- It is a third objective of the invention to provide display screen overlays, for computer monitors, televisions, and the like, that can provide privacy screening or field-of-view expansion from any side of the screen, including both sides, the top, and the bottom, or combinations thereof.
- It is a fourth objective of the invention to provide privacy screens that may be applied to a window, and which not only serve as a blind, but also may be arranged to improve the view through the window, and/or to replace an undesired view with images or graphics.
- It is a fifth objective of the invention to provide novel sheet structures that not only can be used for field-of-view control, but that may also be advantageously adapted for use in image separating or combining devices, light collectors, and as retroreflectors.
- These objectives are achieved, in accordance with the principles of various preferred embodiments of the invention, by providing an overlay in the form of a single sheet of light transmitting material having a plurality of parallel, spaced apart v-shaped grooves, or a plurality of polyhedral, conical, or frustoconical lens structures, and/or solid (i.e., three-dimensional) lens structures arranged in an interlocking or honeycomb pattern, and that serve to shift or expand the field-or-view of an image or scene viewed through the sheet, that direct incident light in a desired manner, or that have the effect of combining or separating images, depending on the viewing angle.
- In each of the embodiments of the invention, any angled or curved surface may be treated to attenuate or scatter light, thereby providing a privacy screening effect with respect to a range of angles determined by the orientation of the surfaces. The surface treatments applied may consist of any surface treatments that have the effect of absorbing or scattering light and that can be applied to selected surfaces by means of a mask, control of the surface treatment tool, or use of an appropriate die, including application of opaque, light diffusing, or polarizing coatings, delustering, chemical or laser etching, casting, and differential polishing of previously roughened surfaces, as well as any other surface treatment methods described in the above-cited patents or patent applications, or that are known or may become known to those skilled in the art.
- In the case of polarizing coatings, a privacy screening effect can be obtained by providing a polarizing coating on an entire back surface of the overlay, and by oppositely polarizing selected surfaces on the front side of the overlay.
- In addition to or instead of including light attenuating or light scattering coatings, the overlays of the invention may be provided with non-directional treatments such as reflective coatings (useful in forming retroreflectors), radiation shielding coatings, or embedded images or graphics.
- Furthermore, the extremely versatile overlays of the invention may be arranged to facilitate light collection by directing light incident light from a relatively wide field of view into a light guide (which is especially useful for solar collectors), or the overlays may be provided with polarizing or other coatings that facilitate image combination or separation.
- When arranged to provide field-of-view control, i.e., as privacy screens, the overlays of the preferred embodiments of the invention are especially suitable for use in restricting or facilitating viewing by persons situated above or below, or to the side of, a computer monitor or television screen. However, the field-of-view controlling overlays may be used in any of a variety of potential applications that might involve restricted or enhanced viewing of an image or scene, including applications in which the overlays of the invention are applied to windows to serve as blinds.
- When applied to a window, the privacy screens of the invention not only can provide privacy and restrict incoming light, but also can modify the view through the window by using the prisms or lenticular structures of the overlay to bend light is selected directions, or modify the view by adding images or graphics visible at selected angles.
- FIG. 1 is a perspective view of one of the preferred field-of-view controlling sheets used as a computer display screen overlay.
- FIG. 2 is a perspective view of a preferred embodiment of the field-of-view controlling overlay of FIG. 1, in which the single sheet that makes up the overlay includes parallel, spaced apart grooves.
- FIG. 3 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated tetrahedral structures arranged in staggered rows according to the principles of a second preferred embodiment of the invention.
- FIG. 4 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated tetrahedral structures arranged in a grid pattern according to the principles of a third preferred embodiment of the invention.
- FIG. 5 is a perspective view of a portion of a single sheet field-of-view controlling overlay including tetrahedral structures arranged in staggered rows according to the principles of a fourth preferred embodiment of the invention.
- FIG. 6 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated tetrahedral structures arranged in a grid pattern according to the principles of a fifth preferred embodiment of the invention.
- FIG. 7 is a perspective view of a portion of a single sheet field-of-view controlling overlay including truncated hexahedral structures arranged in a honeycomb pattern according to the principles of a sixth preferred embodiment of the invention.
- FIG. 8 is a perspective view of a portion of a single sheet field-of-view controlling overlay including tetrahedral structures arranged in a honeycomb pattern according to the principles of a seventh preferred embodiment of the invention.
- FIG. 9 is a plan view of the overlay of FIG. 3, in which no surfaces are treated to provide a privacy screening effect.
- FIGS.10-13 are plan views of the overlay of FIG. 3, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 14 is a plan view of the overlay of FIG. 4, in which no surfaces are treated to provide a privacy screening effect.
- FIGS.15-18 are plan views of the overlay of FIG. 4, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 19 is a plan view of the overlay of FIG. 5, in which no surfaces are treated to provide a privacy screening effect.
- FIGS.20-23 are plan views of the overlay of FIG. 5, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 24 is a plan view of the overlay of FIG. 6, in which no surfaces are treated to provide a privacy screening effect.
- FIGS.25-28 are plan views of the overlay of FIG. 6, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 29 is a plan view of the overlay of FIG. 7, in which no surfaces are treated to provide a privacy screening effect.
- FIGS.30-39 are plan views of the overlay of FIG. 7, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 40 is a plan view of the overlay of FIG. 8, in which no surfaces are treated to provide a privacy screening effect.
- FIGS.41-50 are plan views of the overlay of FIG. 8, in which different surfaces are treated to control the viewing angle in different directions.
- FIG. 51 is a perspective view of a portion of a single sheet field-of-view controlling overlay including frustoconical structures according to the principles of an eighth preferred embodiment of the invention.
- FIG. 52 is a plan view of the overlay of FIG. 51, in which one surface is treated to control the viewing angle in different directions.
- FIG. 53 is a plan view of the overlay of FIG. 51, in which no surface is treated to provide a privacy screening effect.
- FIG. 54 is a perspective view of a portion of a single sheet field-of-view controlling overlay including conical structures in accordance with the principles of a ninth preferred embodiment of the invention.
- FIGS.55-57 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking or honeycomb arrangement of tetrahedral solids arranged to include a lens surface in accordance with the principles of a tenth preferred embodiment of the invention.
- FIGS.58-60 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking or honeycomb arrangement of tetrahedral solids arranged to include lens-shaped side surfaces in accordance with the principles of an eleventh preferred embodiment of the invention.
- FIGS.61-63 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking or honeycomb arrangement of lens-shaped solids in accordance with the principles of a twelfth preferred embodiment of the invention.
- FIGS.64-66 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of truncated non-regular pyramidal structures in accordance with the principles of a thirteenth embodiment of the invention.
- FIGS.67-69 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of non-regular pyramidal solids arranged to include a lens surface in accordance with the principles of a fourteenth preferred embodiment of the invention.
- FIGS.70-72 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of non-regular pyramidal solids arranged to include lens-shaped side surfaces in accordance with the principles of an fifteenth preferred embodiment of the invention.
- FIGS.73-75 are respective side, plan, and isometric views of a single sheet field-of-view controlling overlay including an interlocking arrangement of lens-shaped solids in accordance with the principles of a sixteenth preferred embodiment of the invention.
- FIGS. 76 and 77 are plan views of a single sheet field-of-view controlling overlay including a honeycomb pattern of lens-shaped solids in accordance with the principles of respective seventeenth and eighteenth preferred embodiments of the invention.
- FIG. 1 illustrates one application of the embodiments illustrated in FIGS.2-50. In this embodiment, an overlay 1 designed to be used with the
display screen 2 of a computer, to either expand, shift, or restrict the field-of-view in any desired direction or directions, or to separate or combine images. For example, using the embodiment of FIG. 2, the field-of-view could be restricted in order to prevent eavesdroppers from viewing the screen from the left or right sides, but expanded to permit viewing of the screen from above. Alternatively, using the embodiment of FIGS. 3-77, the field-of-view could be expanded or restricted on any number of sides, or on any combination of multiple sides, or the overlay could be arranged such that different images or portions of an image may be viewed through different facets. - Alternatively, the sheets or overlays illustrated in FIGS.2-77 could be arranged to collect light. This is especially useful in solar panels, since the same principles that permit expansion of the field-of-view can be applied to increasing the efficiency of solar light collection, with the goal of directing the light to a light guide that guides the light to a photo-electric panel, water heater, or other energy conversion device.
- If the sheets are provided with a reflecting coating on the surface opposite the lenses or prisms, or on the surfaces of the lenses or prisms, a retroreflective effect can be obtained, in which light incident on the sheet is reflected in a particular direction. Overlays or sheets arranged in this manner are especially suitable for use in projection screens, but may also be useful on road signs, nighttime wearing apparel, reflectors for bicycles or other vehicles, and in any other application in which retroreflectivity is utilized.
- Turning to the specific structures which make up the invention, FIG. 2 shows a first preferred embodiment of the invention arranged to provide modification for any two opposite sides of field-of-view. This embodiment consists of a
sheet 3 having parallel, spaced apart v-shaped grooves formed byangled surfaces angled surfaces sheet 3. Thesurfaces 6 connecting the grooves are planar, although it is possible to modifysurfaces 6 to having a curvature in order to obtain lensing effects. - As in all of the embodiments of the present invention, in order to restrict or screen a portion of the field of view, it is simply necessary to treat at least one of the
angled surfaces - The surface treatments applied in this and other embodiments of the invention may consist of any surface treatments that have the effect of absorbing or scattering light and that can be applied to selective surfaces by means of a mask, die, tool, or the like. In addition to coatings, possible surface treatments include delustering, chemical or laser etching, casting, and differential polishing of previously roughened surfaces, as well as any other surface treatment methods described in the above-cited patents or patent applications, or that are known or may become known to those skilled in the art. For example, if the surfaces are treated by printing, graphic images may be added so that the blocked image or scene is replaced by a graphic image.
- It will of course be appreciated that the surfaces that are not “treated” to scatter or attenuate light in order to create a privacy screening effect may nevertheless be treated to enhance transmission of light through the surfaces, for example by polishing, curing, adding transparent protective coatings, and or printing of portions of the surfaces so as to superimpose graphic images on the images being viewed through the screen. The term “untreated” is intended to mean “not altered to diffuse or attenuate light.”
- Furthermore, it will be appreciated that a privacy screening effect can be obtained not only by light scattering or attenuation, but also by polarization. In order to obtain privacy screening by polarization, a back surface of the overlay is polarized in a first direction, and then selected facets or surfaces on the front side of the overlay are polarized in the opposite direction so that the oppositely polarized facets or surfaces effectively prevent transmission of light through the surfaces. Furthermore, if the light source itself is polarized, as is the case with a liquid crystal display, privacy screening could be achieved without polarizing the back side of the overlay, so long as the selected facets or surfaces are polarized in a direction opposite the direction of polarization of the display.
- In addition to treatments that scatter, attenuate, or polarize light in order to provide a privacy screening effect, surface treatments may include anti-radiation coatings, polarizing coatings for purposes other than privacy screening, printing, and other surface treatments such as the above mentioned reflective coating, applied either to one or more facets of the prism structures, but possibly also to the opposite side of the sheet.
- According to the preferred embodiment of the invention illustrated in FIGS. 3 and 9-13, the field-of-view controlling arrangement is made up of a sheet that include staggered rows of lenticular elements in the form of truncated
tetrahedral structures 100 having five sets of mutually parallel surfaces indicated by reference numerals 101-105. According to the principles of this embodiment of the invention, the sheet may be used without treatment of any of the surfaces, in which case the field-of-view is increased on four sides, or any one or more of surfaces 101-105 may be selectively treated to provide a privacy screening effects, the range of angles of which is determined by the orientations of the treated surfaces. For example, in the arrangement of FIG. 9, none of the surfaces are treated, while in the arrangement of FIG. 10, only surface 101 is treated, and in the arrangements of FIGS. 11-13,surfaces - FIGS. 4 and 14-18 illustrate a field-of-view controlling arrangement similar to that of FIGS. 14-18 except that the truncated tetrahedral
lenticular elements 200 are arranged in a grid rather than in staggered rows. Again, any or none of the surfaces 201-205 may be subjected to a light-attenuating or other surface treatment in the manner described above. - FIGS. 5 and 19-23 illustrate further embodiments of the invention in which the field-of-view controlling elements are non-truncated tetrahedral structures (300,400) in staggered rows (FIGS. 5 and 19-23) or non-staggered rows (FIGS. 6 and 25-28) and in which any set of surfaces 301-304, 401-404 may be subjected to a light attenuating or other surface treatment, while FIGS. 7, 30-39, 8, and. 40-50 show corresponding arrangements of truncated or non-truncated
hexahedral structures - FIGS.51-53 show preferred embodiments of the invention in which the field-of-view controlling elements are frustoconical-shaped
structures 700 havingsurfaces 701 and 702 in which thecurved surface 701 which forms sides of the structure may optionally be provided with a light-attenuating surface treatment to provide a 360° privacy screening effect as shown in FIG. 52, or with other surface treatments as noted above. - Finally, FIG. 54 shows a preferred embodiment of the invention in which the field-of-view controlling elements are
conical structures 800 havingsurfaces 801. This embodiment is primarily for field-of-view expansion since it would be very difficult to selectively treat portions of the conical surfaces in such a way as to still permit viewing of an image through the overlay, although non-selective treatments may of course be applied to either side of the sheet or overlay. - One advantage of using interlocking solids that form staggered rows or a honeycomb pattern of field-of-view controlling elements is that the staggering or honeycomb pattern reduces the so-called “staircase” effect, which results in distortion or blurring of non-horizontal or vertical lines, caused by the quantum or discrete nature of aligned microprism or lenticular elements. In addition, non-truncated discrete elements have the advantage of providing maximal glare reduction and expansion of the field-of-view in non-restricted directions.
- Further examples of arrangements utilizing interlocking or honeycomb patterns are found in FIGS.55-80. The arrangements of FIGS. 55-63 are similar to those of FIGS. 29-39 except that the truncated hexahedral solids depicted in FIGS. 29-39 are modified to include lens elements 900 (FIGS. 55-57), curved side surfaces 901 (FIGS. 58-60) , or both (FIGS. 61-63) In the arrangements of FIGS. 64-78, the interlocking solids are truncated non-regular tetrahedra, i.e., tetrahedra with a diamond-shaped rather than square base, having either a flat top surface 902 (FIGS. 64-66, a lens-shaped top surface 903 (FIGS. 67-69), lens-shaped side surfaces 904 (FIGS. 70-72), or both (FIGS. 73-75). Finally, as illustrated in FIGS. 76 and 77, the interlocking solids may include more complex shapes, such as the multi-faceted structures shown in FIG. 76, in which the two traverse vertical cross-sections have three and four respective sides extending from the plane of the sheet, or the more continuously curved honeycomb arrangement of FIG. 77, which includes an semi-annular mid-portion and conical end portions.
- As indicated above, the single sheet field-of-view controlling overlays of the invention may be used as overlays for video displays, for example to restrict eavesdropping with respect to a computer display. In addition, the overlays of the invention may be used as privacy screening window coverings in order to achieve a variety of effects not possible with conventional mechanical blinds. For example, the prisms or lenticular structures that make up the overlays may be used to bend incoming light and improve the view from the window and, if the view from the window does not include any scenes worth expanding, the entire view may be replaced by images or graphics.
- The dimensions of the structural elements included in the overlays of the various embodiments of the invention are essentially determined by the technology used to form the sheets and to treat the surfaces, and to the intended application, although the pitch of the grooves or lenticular elements is preferably made small enough to eliminate perception of the grooves or lenticular elements, and/or Moiré patterns resulting from parallel arrangement of light transmitting and diffusing surfaces. A pitch of less than ten grooves or elements per inch, and preferably less than twenty grooves per inch, will provide the best appearance most applications, although the invention is not in principle limited to particular sheet dimensions or pitches.
- Having thus described a number of preferred embodiments of the invention in sufficient detail to enable those skilled in the art to make and use the invention, it will nevertheless be appreciated that numerous variations and modifications of the illustrated embodiment may be made without departing from the spirit of the invention. For example, the illustrated microprism and lenticular sheet configurations are hardly exhaustive of all of the possible configurations for such sheets. Accordingly, it is intended that the invention not be limited by the above description or accompanying drawings, but that it be defined solely in accordance with the appended claims.
Claims (43)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/880,765 US20020163728A1 (en) | 2001-05-02 | 2001-06-15 | Optical sheets or overlays |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/846,455 US6443579B1 (en) | 2001-05-02 | 2001-05-02 | Field-of-view controlling arrangements |
US09/880,765 US20020163728A1 (en) | 2001-05-02 | 2001-06-15 | Optical sheets or overlays |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/846,455 Continuation-In-Part US6443579B1 (en) | 2001-05-02 | 2001-05-02 | Field-of-view controlling arrangements |
Publications (1)
Publication Number | Publication Date |
---|---|
US20020163728A1 true US20020163728A1 (en) | 2002-11-07 |
Family
ID=25297991
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/846,455 Expired - Fee Related US6443579B1 (en) | 2001-05-02 | 2001-05-02 | Field-of-view controlling arrangements |
US09/880,765 Abandoned US20020163728A1 (en) | 2001-05-02 | 2001-06-15 | Optical sheets or overlays |
US10/057,916 Abandoned US20020163729A1 (en) | 2001-05-02 | 2002-01-29 | Field-of-view controlling arrangements |
US10/114,246 Expired - Fee Related US6609799B1 (en) | 2001-05-02 | 2002-04-03 | Field-of-view controlling arrangements |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/846,455 Expired - Fee Related US6443579B1 (en) | 2001-05-02 | 2001-05-02 | Field-of-view controlling arrangements |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/057,916 Abandoned US20020163729A1 (en) | 2001-05-02 | 2002-01-29 | Field-of-view controlling arrangements |
US10/114,246 Expired - Fee Related US6609799B1 (en) | 2001-05-02 | 2002-04-03 | Field-of-view controlling arrangements |
Country Status (4)
Country | Link |
---|---|
US (4) | US6443579B1 (en) |
AU (1) | AU2002340494A1 (en) |
TW (1) | TW531663B (en) |
WO (1) | WO2002091033A2 (en) |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040078956A1 (en) * | 2000-03-31 | 2004-04-29 | Calsonic Kansei Corporation | Duplex pipe end working method |
US6778336B2 (en) | 2002-08-02 | 2004-08-17 | Illinois Tool Works Inc. | Reduced visibility surface |
US20040183972A1 (en) * | 2001-04-20 | 2004-09-23 | Bell Gareth Paul | Optical retarder |
US20040239582A1 (en) * | 2001-05-01 | 2004-12-02 | Seymour Bruce David | Information display |
EP1486802A1 (en) * | 2003-06-09 | 2004-12-15 | Kabushiki Kaisha Toyota Jidoshokki | Textured optical path converting element and display backlight incorporating same |
US20050024742A1 (en) * | 2003-08-01 | 2005-02-03 | Tracy Richard J. | Night vision and audio signal reduction system |
US20050062410A1 (en) * | 2001-10-11 | 2005-03-24 | Bell Gareth Paul | Visual display unit illumination |
US20050206582A1 (en) * | 2001-11-09 | 2005-09-22 | Bell Gareth P | Depth fused display |
US20060103951A1 (en) * | 2002-03-17 | 2006-05-18 | Bell Gareth P | Method to control point spread function of an image |
US20060284574A1 (en) * | 2003-05-21 | 2006-12-21 | Emslie James S | Backlighting system for display screen |
US20060290594A1 (en) * | 2002-07-15 | 2006-12-28 | Engel Gabriel D | Multilayer video screen |
US20070046874A1 (en) * | 2005-08-12 | 2007-03-01 | Masaya Adachi | Display device and electrical appliance using the same |
US20080152842A1 (en) * | 2000-11-17 | 2008-06-26 | Pure Depth Limited | Altering surfaces of display screens |
US20080284792A1 (en) * | 2007-05-18 | 2008-11-20 | Gareth Paul Bell | Method and system for improving display quality of a multi-component display |
US7486854B2 (en) * | 2006-01-24 | 2009-02-03 | Uni-Pixel Displays, Inc. | Optical microstructures for light extraction and control |
US20090051623A1 (en) * | 2007-08-22 | 2009-02-26 | Paul Gareth P | Method and system for determining a position for an interstital diffuser for use in a multi-layer display |
US20090174670A1 (en) * | 2004-11-24 | 2009-07-09 | Koninklijke Philips Electronics, N.V. | Placement for interactive display tables |
US20090213141A1 (en) * | 2005-10-05 | 2009-08-27 | Puredepth Limited | Method of manipulating visibility of images on a volumetric display |
US20090242142A1 (en) * | 2008-04-01 | 2009-10-01 | International Business Machines Corporation | Privacy screen for a display device |
US7624339B1 (en) | 1999-08-19 | 2009-11-24 | Puredepth Limited | Data display for multiple layered screens |
US7724208B1 (en) | 1999-08-19 | 2010-05-25 | Puredepth Limited | Control of depth movement for visual display with layered screens |
US7730413B1 (en) | 1999-08-19 | 2010-06-01 | Puredepth Limited | Display method for multiple layered screens |
US20100149662A1 (en) * | 2007-06-19 | 2010-06-17 | Armstrong J Joseph | External beam delivery system for laser dark-field illumination in a catadioptric optical system |
US20100289819A1 (en) * | 2009-05-14 | 2010-11-18 | Pure Depth Limited | Image manipulation |
US20110007089A1 (en) * | 2009-07-07 | 2011-01-13 | Pure Depth Limited | Method and system of processing images for improved display |
EP1774372B1 (en) * | 2004-05-10 | 2011-07-20 | Saint-Gobain Glass France | Textured transparent film having pyramidal patterns that can be associated with photovoltaic cells |
US8154473B2 (en) | 2003-05-16 | 2012-04-10 | Pure Depth Limited | Display control system |
US8416149B2 (en) | 2002-06-25 | 2013-04-09 | Pure Depth Limited | Enhanced viewing experience of a display through localised dynamic control of background lighting level |
US8766526B2 (en) * | 2010-06-28 | 2014-07-01 | Lg Innotek Co., Ltd. | Light-emitting device package providing improved luminous efficacy and uniform distribution |
JP2016114629A (en) * | 2014-12-11 | 2016-06-23 | 大日本印刷株式会社 | Reflective screen and image display system |
JP2018189919A (en) * | 2017-05-11 | 2018-11-29 | 株式会社ジャパンディスプレイ | Prism sheet and luminaire |
US20190196539A1 (en) * | 2017-12-27 | 2019-06-27 | Vincent Gerard Dominique Cassar | Privacy Screen Attached by Micro-suction Tape |
CN110211177A (en) * | 2019-06-05 | 2019-09-06 | 视云融聚(广州)科技有限公司 | Camera picture linear goal refers to northern method, electronic equipment and storage medium |
US10795256B2 (en) * | 2017-12-26 | 2020-10-06 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Optical compensation film, photomask, and exposure apparatus |
EP3923042A1 (en) * | 2020-06-11 | 2021-12-15 | Luminit Llc | Anti-glare, privacy screen for windows or electronic device displays |
WO2023231119A1 (en) * | 2022-05-31 | 2023-12-07 | Tcl华星光电技术有限公司 | Peep-proof film and tiled panel |
Families Citing this family (79)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6825698B2 (en) | 2001-08-29 | 2004-11-30 | Altera Corporation | Programmable high speed I/O interface |
AU777830B2 (en) * | 1999-07-08 | 2004-11-04 | Svyatoslav Ivanovich Arsenich | Projection system |
EP1204894A4 (en) | 1999-08-01 | 2002-09-25 | Deep Video Imaging Ltd | Interactive three dimensional display with layered screens |
NZ514119A (en) * | 2001-09-11 | 2004-06-25 | Deep Video Imaging Ltd | Improvement to instrumentation |
NZ521505A (en) | 2002-09-20 | 2005-05-27 | Deep Video Imaging Ltd | Multi-view display |
US7059733B2 (en) * | 2003-03-18 | 2006-06-13 | Hitachi, Ltd. | Display apparatus |
KR100570973B1 (en) * | 2003-05-02 | 2006-04-13 | 삼성에스디아이 주식회사 | FPD with light-shielding substrate and methode for fabricating the same |
KR100546652B1 (en) * | 2003-06-30 | 2006-01-26 | 엘지전자 주식회사 | Organic electro luminescence device |
CA2529388C (en) | 2003-07-07 | 2013-02-19 | Commonwealth Scientific And Industrial Research Organisation | Method of encoding a latent image |
US7262911B2 (en) * | 2004-03-15 | 2007-08-28 | Arisawa Mfg. Co., Ltd. | Reflex-type screen assembly |
US7110176B2 (en) * | 2004-05-07 | 2006-09-19 | Arisawa Mfg. Co., Ltd. | Reflex-type screen |
KR100707178B1 (en) | 2005-01-22 | 2007-04-13 | 삼성전자주식회사 | One-way transparent optical system, flat panel display having the same and method for fabricating the one-way transparent optical system |
FR2895523A1 (en) * | 2005-12-22 | 2007-06-29 | Thomson Licensing Sas | MICROLENS ARRAY, SCREEN, RETROPROJECTOR AND METHOD FOR MANUFACTURING THE SAME |
KR101287208B1 (en) * | 2006-06-30 | 2013-07-16 | 전북대학교산학협력단 | Liquid Crystal Display Device |
US7570423B2 (en) * | 2007-01-25 | 2009-08-04 | Hewlett-Packard Development Company, L.P. | Projection screen |
US7808708B2 (en) * | 2007-02-01 | 2010-10-05 | Reald Inc. | Aperture correction for lenticular screens |
US7508589B2 (en) * | 2007-02-01 | 2009-03-24 | Real D | Soft aperture correction for lenticular screens |
KR100927588B1 (en) * | 2008-05-09 | 2009-11-23 | 삼성모바일디스플레이주식회사 | Flat panel display device |
US11792538B2 (en) | 2008-05-20 | 2023-10-17 | Adeia Imaging Llc | Capturing and processing of images including occlusions focused on an image sensor by a lens stack array |
US8866920B2 (en) | 2008-05-20 | 2014-10-21 | Pelican Imaging Corporation | Capturing and processing of images using monolithic camera array with heterogeneous imagers |
EP3328048B1 (en) | 2008-05-20 | 2021-04-21 | FotoNation Limited | Capturing and processing of images using monolithic camera array with heterogeneous imagers |
GB2464916B (en) | 2008-10-21 | 2013-07-31 | Iti Scotland Ltd | Light Guides |
CN101825736B (en) * | 2009-03-03 | 2013-07-24 | 北京京东方光电科技有限公司 | Enhanced prism sheet |
GB2468411A (en) * | 2009-03-05 | 2010-09-08 | Iti Scotland Ltd | Light guide with heat sink |
WO2010100504A1 (en) | 2009-03-05 | 2010-09-10 | Iti Scotland Limited | Light guides |
JP5333050B2 (en) * | 2009-08-25 | 2013-11-06 | ソニー株式会社 | 3D image display device and 3D image display device manufacturing method |
EP2502115A4 (en) | 2009-11-20 | 2013-11-06 | Pelican Imaging Corp | Capturing and processing of images using monolithic camera array with heterogeneous imagers |
SG10201503516VA (en) | 2010-05-12 | 2015-06-29 | Pelican Imaging Corp | Architectures for imager arrays and array cameras |
US20120032872A1 (en) * | 2010-08-09 | 2012-02-09 | Delphi Technologies, Inc. | Dual view display system |
US8878950B2 (en) | 2010-12-14 | 2014-11-04 | Pelican Imaging Corporation | Systems and methods for synthesizing high resolution images using super-resolution processes |
KR101973822B1 (en) | 2011-05-11 | 2019-04-29 | 포토네이션 케이맨 리미티드 | Systems and methods for transmitting and receiving array camera image data |
US20130265459A1 (en) | 2011-06-28 | 2013-10-10 | Pelican Imaging Corporation | Optical arrangements for use with an array camera |
WO2013043751A1 (en) | 2011-09-19 | 2013-03-28 | Pelican Imaging Corporation | Systems and methods for controlling aliasing in images captured by an array camera for use in super resolution processing using pixel apertures |
IN2014CN02708A (en) | 2011-09-28 | 2015-08-07 | Pelican Imaging Corp | |
WO2013126578A1 (en) | 2012-02-21 | 2013-08-29 | Pelican Imaging Corporation | Systems and methods for the manipulation of captured light field image data |
US9210392B2 (en) | 2012-05-01 | 2015-12-08 | Pelican Imaging Coporation | Camera modules patterned with pi filter groups |
WO2014005123A1 (en) | 2012-06-28 | 2014-01-03 | Pelican Imaging Corporation | Systems and methods for detecting defective camera arrays, optic arrays, and sensors |
US20140002674A1 (en) | 2012-06-30 | 2014-01-02 | Pelican Imaging Corporation | Systems and Methods for Manufacturing Camera Modules Using Active Alignment of Lens Stack Arrays and Sensors |
WO2014031795A1 (en) | 2012-08-21 | 2014-02-27 | Pelican Imaging Corporation | Systems and methods for parallax detection and correction in images captured using array cameras |
US20140055632A1 (en) | 2012-08-23 | 2014-02-27 | Pelican Imaging Corporation | Feature based high resolution motion estimation from low resolution images captured using an array source |
EP2901671A4 (en) | 2012-09-28 | 2016-08-24 | Pelican Imaging Corp | Generating images from light fields utilizing virtual viewpoints |
WO2014078443A1 (en) | 2012-11-13 | 2014-05-22 | Pelican Imaging Corporation | Systems and methods for array camera focal plane control |
US9462164B2 (en) | 2013-02-21 | 2016-10-04 | Pelican Imaging Corporation | Systems and methods for generating compressed light field representation data using captured light fields, array geometry, and parallax information |
US9374512B2 (en) | 2013-02-24 | 2016-06-21 | Pelican Imaging Corporation | Thin form factor computational array cameras and modular array cameras |
WO2014138697A1 (en) | 2013-03-08 | 2014-09-12 | Pelican Imaging Corporation | Systems and methods for high dynamic range imaging using array cameras |
US8866912B2 (en) | 2013-03-10 | 2014-10-21 | Pelican Imaging Corporation | System and methods for calibration of an array camera using a single captured image |
US9521416B1 (en) | 2013-03-11 | 2016-12-13 | Kip Peli P1 Lp | Systems and methods for image data compression |
US9106784B2 (en) | 2013-03-13 | 2015-08-11 | Pelican Imaging Corporation | Systems and methods for controlling aliasing in images captured by an array camera for use in super-resolution processing |
US9888194B2 (en) | 2013-03-13 | 2018-02-06 | Fotonation Cayman Limited | Array camera architecture implementing quantum film image sensors |
WO2014164550A2 (en) | 2013-03-13 | 2014-10-09 | Pelican Imaging Corporation | System and methods for calibration of an array camera |
US9519972B2 (en) | 2013-03-13 | 2016-12-13 | Kip Peli P1 Lp | Systems and methods for synthesizing images from image data captured by an array camera using restricted depth of field depth maps in which depth estimation precision varies |
US9100586B2 (en) | 2013-03-14 | 2015-08-04 | Pelican Imaging Corporation | Systems and methods for photometric normalization in array cameras |
WO2014159779A1 (en) | 2013-03-14 | 2014-10-02 | Pelican Imaging Corporation | Systems and methods for reducing motion blur in images or video in ultra low light with array cameras |
EP2973476A4 (en) | 2013-03-15 | 2017-01-18 | Pelican Imaging Corporation | Systems and methods for stereo imaging with camera arrays |
US9497429B2 (en) | 2013-03-15 | 2016-11-15 | Pelican Imaging Corporation | Extended color processing on pelican array cameras |
US10122993B2 (en) | 2013-03-15 | 2018-11-06 | Fotonation Limited | Autofocus system for a conventional camera that uses depth information from an array camera |
US9445003B1 (en) | 2013-03-15 | 2016-09-13 | Pelican Imaging Corporation | Systems and methods for synthesizing high resolution images using image deconvolution based on motion and depth information |
US9497370B2 (en) | 2013-03-15 | 2016-11-15 | Pelican Imaging Corporation | Array camera architecture implementing quantum dot color filters |
US9898856B2 (en) | 2013-09-27 | 2018-02-20 | Fotonation Cayman Limited | Systems and methods for depth-assisted perspective distortion correction |
US9185276B2 (en) | 2013-11-07 | 2015-11-10 | Pelican Imaging Corporation | Methods of manufacturing array camera modules incorporating independently aligned lens stacks |
US10119808B2 (en) | 2013-11-18 | 2018-11-06 | Fotonation Limited | Systems and methods for estimating depth from projected texture using camera arrays |
WO2015081279A1 (en) | 2013-11-26 | 2015-06-04 | Pelican Imaging Corporation | Array camera configurations incorporating multiple constituent array cameras |
US10089740B2 (en) | 2014-03-07 | 2018-10-02 | Fotonation Limited | System and methods for depth regularization and semiautomatic interactive matting using RGB-D images |
CN105487238B (en) * | 2014-09-19 | 2018-06-29 | 上海和辉光电有限公司 | Dot structure applied to stereoscopic display |
JP2017531976A (en) | 2014-09-29 | 2017-10-26 | フォトネイション ケイマン リミテッド | System and method for dynamically calibrating an array camera |
US9942474B2 (en) | 2015-04-17 | 2018-04-10 | Fotonation Cayman Limited | Systems and methods for performing high speed video capture and depth estimation using array cameras |
US10482618B2 (en) | 2017-08-21 | 2019-11-19 | Fotonation Limited | Systems and methods for hybrid depth regularization |
TWI686661B (en) * | 2018-04-20 | 2020-03-01 | 億立材料有限公司 | Projection screen capable of being projected multi-angle images |
US10687478B2 (en) | 2018-09-21 | 2020-06-23 | Austin Rouse | Optimized LED lighting array for horticultural applications |
MX2022003020A (en) | 2019-09-17 | 2022-06-14 | Boston Polarimetrics Inc | Systems and methods for surface modeling using polarization cues. |
DE112020004813B4 (en) | 2019-10-07 | 2023-02-09 | Boston Polarimetrics, Inc. | System for expanding sensor systems and imaging systems with polarization |
CN114787648B (en) | 2019-11-30 | 2023-11-10 | 波士顿偏振测定公司 | Systems and methods for transparent object segmentation using polarization cues |
US11195303B2 (en) | 2020-01-29 | 2021-12-07 | Boston Polarimetrics, Inc. | Systems and methods for characterizing object pose detection and measurement systems |
JP2023511747A (en) | 2020-01-30 | 2023-03-22 | イントリンジック イノベーション エルエルシー | Systems and methods for synthesizing data for training statistical models with different imaging modalities, including polarization imaging |
US11953700B2 (en) | 2020-05-27 | 2024-04-09 | Intrinsic Innovation Llc | Multi-aperture polarization optical systems using beam splitters |
US11954886B2 (en) | 2021-04-15 | 2024-04-09 | Intrinsic Innovation Llc | Systems and methods for six-degree of freedom pose estimation of deformable objects |
US11290658B1 (en) | 2021-04-15 | 2022-03-29 | Boston Polarimetrics, Inc. | Systems and methods for camera exposure control |
US11689813B2 (en) | 2021-07-01 | 2023-06-27 | Intrinsic Innovation Llc | Systems and methods for high dynamic range imaging using crossed polarizers |
US11680695B1 (en) | 2022-06-10 | 2023-06-20 | Luminit Llc | Anti-glare filter for illumination systems, including LED lighting systems |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2909770A (en) | 1953-11-25 | 1959-10-20 | Gen Electric | Transmission screen |
US3718078A (en) | 1970-12-31 | 1973-02-27 | Polaroid Corp | Smoothly granulated optical surface and method for making same |
US3971051A (en) | 1973-06-29 | 1976-07-20 | Polaroid Corporation | Focusing screen |
US3902787A (en) | 1974-04-17 | 1975-09-02 | Action Films | Rear projection viewing screen |
US4165920A (en) | 1977-07-27 | 1979-08-28 | Qantix Corporation | Echo reduction improvement in a front face glare reduction overlay |
US4309074A (en) | 1977-11-28 | 1982-01-05 | Granieri Jr Michael S | Novel viewing screen |
JPS5616135U (en) | 1979-01-17 | 1981-02-12 | ||
US4206969A (en) | 1979-04-11 | 1980-06-10 | Minnesota Mining And Manufacturing Company | Directional front projection screen |
US4756603A (en) | 1986-01-31 | 1988-07-12 | Nippon Seiki Co., Ltd. | Glare-proof transparent cover plate |
US4708435A (en) | 1986-10-30 | 1987-11-24 | Mitsubishi Rayon Co., Ltd. | Rear projection screen |
US4730897A (en) | 1987-04-21 | 1988-03-15 | North American Philips Corporation | Projection screen having high resolution and good mechanical stability |
NL8801361A (en) | 1988-05-27 | 1989-12-18 | Koninkl Philips Electronics Nv | VIEW PROJECTION SCREEN. |
US5208620A (en) | 1988-10-04 | 1993-05-04 | Canon Kabushiki Kaisha | Display apparatus |
US5400114A (en) | 1991-09-05 | 1995-03-21 | Hitachi, Ltd. | Rear-projection screen and a rear projection image display employing the rear-projection screen |
JP3280050B2 (en) | 1991-11-05 | 2002-04-30 | 若竹 雅之 | Pseudo luminous body, substrate for simulated luminous body used therefor, and display element and display device using the quasi luminous body |
US6002829A (en) | 1992-03-23 | 1999-12-14 | Minnesota Mining And Manufacturing Company | Luminaire device |
US5457572A (en) | 1992-12-17 | 1995-10-10 | Kuraray Co., Ltd. | Rear-projection screen |
US5296882A (en) | 1992-12-21 | 1994-03-22 | Minnesota Mining And Manufacturing Company | Overhead projector with catadioptric fresnel lens |
US5316359A (en) | 1993-03-08 | 1994-05-31 | Chrysler Corporation | Anti-reflective automotive interior instrument panel surface |
JPH06273852A (en) | 1993-03-19 | 1994-09-30 | Matsushita Electric Ind Co Ltd | Transmission type cabinet screen and its manufacture |
US5555476A (en) | 1993-08-30 | 1996-09-10 | Toray Industries, Inc. | Microlens array sheet for a liquid crystal display, method for attaching the same and liquid crystal display equipped with the same |
US6025897A (en) | 1993-12-21 | 2000-02-15 | 3M Innovative Properties Co. | Display with reflective polarizer and randomizing cavity |
WO1996023245A1 (en) | 1995-01-26 | 1996-08-01 | Toray Industries, Inc. | Liquid crystal display device |
US5512219A (en) | 1994-06-03 | 1996-04-30 | Reflexite Corporation | Method of casting a microstructure sheet having an array of prism elements using a reusable polycarbonate mold |
US5760955A (en) | 1995-04-06 | 1998-06-02 | Philips Electronics North America Corporation | Rear projection screen with reduced speckle |
GB9524220D0 (en) | 1995-11-27 | 1996-01-31 | Nashua Corp | Improvements in or relating to projection screens and the like |
US5836096A (en) | 1996-03-04 | 1998-11-17 | Brauer; William R. | Apparatus for illuminating medical diagnostic imaging film with enhanced viewability |
JPH1164608A (en) | 1997-08-26 | 1999-03-05 | Dainippon Printing Co Ltd | Lenticular lens |
JP3822961B2 (en) | 1997-09-11 | 2006-09-20 | 大日本印刷株式会社 | Lenticular lens sheet and transmissive screen |
-
2001
- 2001-05-02 US US09/846,455 patent/US6443579B1/en not_active Expired - Fee Related
- 2001-06-15 US US09/880,765 patent/US20020163728A1/en not_active Abandoned
-
2002
- 2002-01-29 US US10/057,916 patent/US20020163729A1/en not_active Abandoned
- 2002-04-03 US US10/114,246 patent/US6609799B1/en not_active Expired - Fee Related
- 2002-04-18 WO PCT/US2002/008271 patent/WO2002091033A2/en not_active Application Discontinuation
- 2002-04-18 AU AU2002340494A patent/AU2002340494A1/en not_active Abandoned
- 2002-04-19 TW TW091108076A patent/TW531663B/en active
Cited By (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7624339B1 (en) | 1999-08-19 | 2009-11-24 | Puredepth Limited | Data display for multiple layered screens |
US7730413B1 (en) | 1999-08-19 | 2010-06-01 | Puredepth Limited | Display method for multiple layered screens |
US8179338B2 (en) | 1999-08-19 | 2012-05-15 | Igt | Method and system for displaying information |
US7724208B1 (en) | 1999-08-19 | 2010-05-25 | Puredepth Limited | Control of depth movement for visual display with layered screens |
US20040078956A1 (en) * | 2000-03-31 | 2004-04-29 | Calsonic Kansei Corporation | Duplex pipe end working method |
US20080152842A1 (en) * | 2000-11-17 | 2008-06-26 | Pure Depth Limited | Altering surfaces of display screens |
US8154691B2 (en) | 2000-11-17 | 2012-04-10 | Pure Depth Limited | Altering surfaces of display screens |
US20100201921A1 (en) * | 2001-04-20 | 2010-08-12 | Pure Depth Limited | Optical retarder |
US7742124B2 (en) | 2001-04-20 | 2010-06-22 | Puredepth Limited | Optical retarder |
US20040183972A1 (en) * | 2001-04-20 | 2004-09-23 | Bell Gareth Paul | Optical retarder |
US20040239582A1 (en) * | 2001-05-01 | 2004-12-02 | Seymour Bruce David | Information display |
US8120547B2 (en) | 2001-05-01 | 2012-02-21 | Puredepth Limited | Information display |
US8711058B2 (en) | 2001-05-01 | 2014-04-29 | Puredepth Limited | Information display |
US8687149B2 (en) | 2001-10-11 | 2014-04-01 | Pure Depth Limited | Visual display unit illumination |
US10262450B2 (en) | 2001-10-11 | 2019-04-16 | Pure Depth Limited | Display interposing a physical object within a three-dimensional volumetric space |
US8149353B2 (en) | 2001-10-11 | 2012-04-03 | Puredepth Limited | Visual display unit illumination |
US9721378B2 (en) | 2001-10-11 | 2017-08-01 | Pure Depth Limited | Display interposing a physical object within a three-dimensional volumetric space |
US20050062410A1 (en) * | 2001-10-11 | 2005-03-24 | Bell Gareth Paul | Visual display unit illumination |
US20100156922A1 (en) * | 2001-11-09 | 2010-06-24 | Pure Depth Limited | Rendering of an image using a multi-component display |
US7619585B2 (en) | 2001-11-09 | 2009-11-17 | Puredepth Limited | Depth fused display |
US20050206582A1 (en) * | 2001-11-09 | 2005-09-22 | Bell Gareth P | Depth fused display |
US7742239B2 (en) | 2002-03-17 | 2010-06-22 | Puredepth Limited | Method to control point spread function of an image |
US20110188134A1 (en) * | 2002-03-17 | 2011-08-04 | Pure Depth Limited | Method and system for controlling point spread of an object |
US20060103951A1 (en) * | 2002-03-17 | 2006-05-18 | Bell Gareth P | Method to control point spread function of an image |
US8416149B2 (en) | 2002-06-25 | 2013-04-09 | Pure Depth Limited | Enhanced viewing experience of a display through localised dynamic control of background lighting level |
US20060290594A1 (en) * | 2002-07-15 | 2006-12-28 | Engel Gabriel D | Multilayer video screen |
US9137525B2 (en) | 2002-07-15 | 2015-09-15 | Pure Depth Limited | Multilayer video screen |
US6778336B2 (en) | 2002-08-02 | 2004-08-17 | Illinois Tool Works Inc. | Reduced visibility surface |
US8154473B2 (en) | 2003-05-16 | 2012-04-10 | Pure Depth Limited | Display control system |
US20060284574A1 (en) * | 2003-05-21 | 2006-12-21 | Emslie James S | Backlighting system for display screen |
US7439683B2 (en) | 2003-05-21 | 2008-10-21 | Pure Depth Limited | Backlighting system for display screen |
EP1486802A1 (en) * | 2003-06-09 | 2004-12-15 | Kabushiki Kaisha Toyota Jidoshokki | Textured optical path converting element and display backlight incorporating same |
US20050024742A1 (en) * | 2003-08-01 | 2005-02-03 | Tracy Richard J. | Night vision and audio signal reduction system |
US6954315B2 (en) | 2003-08-01 | 2005-10-11 | Illinois Tool Works Inc. | Night vision and audio signal reduction system |
EP1774372B1 (en) * | 2004-05-10 | 2011-07-20 | Saint-Gobain Glass France | Textured transparent film having pyramidal patterns that can be associated with photovoltaic cells |
US20090174670A1 (en) * | 2004-11-24 | 2009-07-09 | Koninklijke Philips Electronics, N.V. | Placement for interactive display tables |
US8487880B2 (en) | 2004-11-24 | 2013-07-16 | Koninklijke Philips Electronics N.V. | Placement for interactive display tables |
US20070046874A1 (en) * | 2005-08-12 | 2007-03-01 | Masaya Adachi | Display device and electrical appliance using the same |
US7742137B2 (en) * | 2005-08-12 | 2010-06-22 | Hitachi, Ltd. | Display device and electrical appliance using the same |
US8436873B2 (en) | 2005-10-05 | 2013-05-07 | Pure Depth Limited | Method of manipulating visibility of images on a volumetric display |
US20090213141A1 (en) * | 2005-10-05 | 2009-08-27 | Puredepth Limited | Method of manipulating visibility of images on a volumetric display |
US8218920B2 (en) | 2006-01-24 | 2012-07-10 | Rambus Inc. | Optical microstructures for light extraction and control |
US8380026B2 (en) | 2006-01-24 | 2013-02-19 | Rambus Inc. | Optical microstructures for light extraction and control |
US7486854B2 (en) * | 2006-01-24 | 2009-02-03 | Uni-Pixel Displays, Inc. | Optical microstructures for light extraction and control |
US20080284792A1 (en) * | 2007-05-18 | 2008-11-20 | Gareth Paul Bell | Method and system for improving display quality of a multi-component display |
US8432411B2 (en) | 2007-05-18 | 2013-04-30 | Pure Depth Limited | Method and system for improving display quality of a multi-component display |
US8665536B2 (en) * | 2007-06-19 | 2014-03-04 | Kla-Tencor Corporation | External beam delivery system for laser dark-field illumination in a catadioptric optical system |
US20100149662A1 (en) * | 2007-06-19 | 2010-06-17 | Armstrong J Joseph | External beam delivery system for laser dark-field illumination in a catadioptric optical system |
US8416150B2 (en) | 2007-08-22 | 2013-04-09 | Igt | Method and system for determining a position for an interstital diffuser for use in a multi-layer display |
US20090051623A1 (en) * | 2007-08-22 | 2009-02-26 | Paul Gareth P | Method and system for determining a position for an interstital diffuser for use in a multi-layer display |
US20090242142A1 (en) * | 2008-04-01 | 2009-10-01 | International Business Machines Corporation | Privacy screen for a display device |
US20100289819A1 (en) * | 2009-05-14 | 2010-11-18 | Pure Depth Limited | Image manipulation |
US9524700B2 (en) | 2009-05-14 | 2016-12-20 | Pure Depth Limited | Method and system for displaying images of various formats on a single display |
US20110007089A1 (en) * | 2009-07-07 | 2011-01-13 | Pure Depth Limited | Method and system of processing images for improved display |
US8928682B2 (en) | 2009-07-07 | 2015-01-06 | Pure Depth Limited | Method and system of processing images for improved display |
US8766526B2 (en) * | 2010-06-28 | 2014-07-01 | Lg Innotek Co., Ltd. | Light-emitting device package providing improved luminous efficacy and uniform distribution |
JP2016114629A (en) * | 2014-12-11 | 2016-06-23 | 大日本印刷株式会社 | Reflective screen and image display system |
JP2018189919A (en) * | 2017-05-11 | 2018-11-29 | 株式会社ジャパンディスプレイ | Prism sheet and luminaire |
US10795256B2 (en) * | 2017-12-26 | 2020-10-06 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Optical compensation film, photomask, and exposure apparatus |
US20190196539A1 (en) * | 2017-12-27 | 2019-06-27 | Vincent Gerard Dominique Cassar | Privacy Screen Attached by Micro-suction Tape |
CN110211177A (en) * | 2019-06-05 | 2019-09-06 | 视云融聚(广州)科技有限公司 | Camera picture linear goal refers to northern method, electronic equipment and storage medium |
EP3923042A1 (en) * | 2020-06-11 | 2021-12-15 | Luminit Llc | Anti-glare, privacy screen for windows or electronic device displays |
CN113808482A (en) * | 2020-06-11 | 2021-12-17 | 鲁米尼特有限责任公司 | Anti-glare privacy screen for windows or electronic device displays |
US11353639B2 (en) | 2020-06-11 | 2022-06-07 | Luminit Llc | Anti-glare, privacy screen for windows or electronic device displays |
WO2023231119A1 (en) * | 2022-05-31 | 2023-12-07 | Tcl华星光电技术有限公司 | Peep-proof film and tiled panel |
Also Published As
Publication number | Publication date |
---|---|
US6609799B1 (en) | 2003-08-26 |
WO2002091033A3 (en) | 2003-02-20 |
WO2002091033A2 (en) | 2002-11-14 |
TW531663B (en) | 2003-05-11 |
US20020163729A1 (en) | 2002-11-07 |
US6443579B1 (en) | 2002-09-03 |
AU2002340494A1 (en) | 2002-11-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20020163728A1 (en) | Optical sheets or overlays | |
JP2950219B2 (en) | Surface light source device, image display device using the surface light source device, and prism array used for the surface light source device | |
US7212345B2 (en) | Randomized patterns of individual optical elements | |
US8749722B2 (en) | Display device displaying an image for a first viewpoint and an image for a second viewpoint | |
JP3288318B2 (en) | Liquid crystal display | |
US4241980A (en) | Beam emission control means | |
KR100656996B1 (en) | Rear Projection Display Screen with Microlens Array | |
US6869195B2 (en) | Rear projection screens and methods of making the same | |
JP2019510998A (en) | Privacy display and dual mode privacy display system | |
DE112012002308T5 (en) | Backlight and liquid crystal display device | |
JP2005292679A (en) | Micromirror screen | |
JPH10301110A (en) | Picture display device | |
CN212515221U (en) | Apparatus for presenting augmented reality image and system for implementing augmented reality display | |
CN113325579A (en) | Apparatus for presenting augmented reality images and system including the same | |
CN218630263U (en) | Light guide plate and display assembly | |
US20220350056A1 (en) | System and method for holographic displays | |
US4548472A (en) | Plate for removing surface reflection out of the visual fields | |
WO2007026986A1 (en) | Display device | |
JP2009145855A (en) | Display device | |
JP2007101643A (en) | Light control board and display device | |
JP2000111708A (en) | Lens array sheet | |
CN218728137U (en) | Optical waveguide and augmented reality display device | |
KR20060025185A (en) | Light-distributing optical foil | |
JPH0996704A (en) | Fresnel lens and display device | |
JP2007521505A6 (en) | Light-dispersed optical thin film |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MYERS, KENNETH J. AND GREENBERG, EDWARD, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MYERS, KENNETH J.;REEL/FRAME:011908/0211 Effective date: 20010616 |
|
AS | Assignment |
Owner name: PERRY, MICHAEL, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MYERS, KENNETH J.;GREENBERG, EDWARD;REEL/FRAME:014078/0010 Effective date: 20030514 Owner name: GREENBERG, EDWARD, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MYERS, KENNETH J.;GREENBERG, EDWARD;REEL/FRAME:014078/0010 Effective date: 20030514 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |