WO1999067671B1 - Method and apparatus for modulating an incident light beam for forming a two-dimensional image - Google Patents

Method and apparatus for modulating an incident light beam for forming a two-dimensional image

Info

Publication number
WO1999067671B1
WO1999067671B1 PCT/US1999/013955 US9913955W WO9967671B1 WO 1999067671 B1 WO1999067671 B1 WO 1999067671B1 US 9913955 W US9913955 W US 9913955W WO 9967671 B1 WO9967671 B1 WO 9967671B1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
elongated elements
light
incident beam
approximately
Prior art date
Application number
PCT/US1999/013955
Other languages
French (fr)
Other versions
WO1999067671A1 (en
Inventor
David M Bloom
Asif Godil
Original Assignee
Silicon Light Machines Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Silicon Light Machines Inc filed Critical Silicon Light Machines Inc
Priority to JP2000556271A priority Critical patent/JP2002519714A/en
Priority to AT99930488T priority patent/ATE233911T1/en
Priority to AU47021/99A priority patent/AU4702199A/en
Priority to EP99930488A priority patent/EP1090322B1/en
Priority to CA002335584A priority patent/CA2335584A1/en
Priority to KR1020007014798A priority patent/KR20010053201A/en
Priority to DE69905717T priority patent/DE69905717T2/en
Publication of WO1999067671A1 publication Critical patent/WO1999067671A1/en
Publication of WO1999067671B1 publication Critical patent/WO1999067671B1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0808—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1828—Diffraction gratings having means for producing variable diffraction

Abstract

An apparatus and method for modulating an incident light beam for forming a two-dimensional projection image. The apparatus includes a plurality of elongated elements each having a reflective surface. These are suspended parallel to each other above a substrate with their respective ends supported, forming a column of adjacent reflecting surfaces grouped according to display elements. Alternate ones of each group are deformable by applying a voltage with respect to the substrate. An approximately flat center section of each deformed element is substantially parallel to and a predetermined distance from a center section of each undeformed element. A light beam incident to the column of adjacent reflecting surfaces is reflected from a group of elongated elements when the alternate ones are undeformed and diffracted when the alternate ones are deformed. A distance of movement is controlled or a ratio of between reflection and diffraction periods determines a display intensity for the corresponding display element.

Claims

AMENDED CLAIMS
[received by the International Bureau on 13 December 1999 (13.12.99); original claims 1, 23, 33, 41, 50 and 60 amended; new claims 62-77 added; remaining claims unchanged (16 pages)] 1. A modulator for modulating an incident beam of light having a wavelungth, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, each elongated element having an approximately constant cross-section between the two ends, the elements arranged parallel to each other and suspended by their respective ends, above a substrate; and b. means for deforming selected ones of the elongated elements toward the substrate thereby entering a deformed state wherein the approximate.} flat reflective surface of each selected element moves toward the substrate by a grating amplitude without the selected elongated elements contacting the substrate.
2. The modulator according to claim 1 wherein the light is in a range o l* wavelengths.
3. The modulator according to claim 1 wherein the light is in a range of visible light wavelengths.
4. The modulator according to claim 1 wherein the light is in a range of ultraviolet light wavelengths.
5. The modulator according to claim 1 wherein the light is in a range of infrared light wavelengths.
6. The modulator according to claim 1 wherein the selected ones of thi: elongated elements moves approximately one-fourth the wavelength of the light.
- 29 -
7. The modulator according to claim 1 wherein the selected ones of the elongated elements move a controllable distance selected to provide a desired brightness of modulated light.
8. The modulator according to claim 1 wherein the grating amplitude is approximately one-fourth to one-third of a distance between undeformed elongated elements and the substrate.
9. The modulator according to claim 1 wherein the approximately flat reflective surface comprises approximately one-third of a length of the corresponding elongated element.
10. The modulator according to claim 1 wherein the elongated elements . re grouped according to a plurality of display elements arranged in a single linear array wherein when the elongated elements corresponding to a display element are undeformed, the incident beam of light is reflected by the display element, and when alternate ones of elongated elements corresponding to the display element are selectively deformed, the incident beam of light is diffracted by the display element.
11. The modulator according to claim 10 wherein an image from the single linear array is scanned to form a two dimensional image.
12. The modulator according to claim 11 wherein the image from the single linear array is scanned sufficiently fast to be integrated into a single nonflic ering image by a user's eye.
13. The modulator according to claim 12 wherein each of a plurality of colored light sequentially impinges on the modulator as the image is scanned to form an image without color break up.
- 30 -
14. The modulator according to claim 12 wherein the two dimensional image is not pixellated.
15. The modulator according to claim 10 wherein a distance of movemeϋt of the selected ones of the elongated elements determines an intensity for the corresponding display element.
16. The modulator according to claim 10 wherein a ratio of a period of reflection to a period of diffraction determines an intensity for the corresponding display element.
17. The modulator according to claim 15 further comprising an optical sj stem for forming an image according to a respective intensity formed by each display element.
18. The modulator according to claim 17 further comprising means for only Uluminating the approximately flat center portions with the beam of light.
19. The modulator according to claim 17 further comprising means for preventing light diffracted by other than the approximately flat center portions from being displayed by the optical system.
20. The modulator according to claim 19 wherein the means for preventing comprises a light shield having a slit for passing light diffracted by the approximate ly flat center portions and for blocking light diffracted by other than the approximately flai center portions.
21. The modulator according to claim 19 where the means for preventing comprises a reflective element disposed over the two ends of each elongated element in a plane parallel to the reflective surfaces of undeformed elongated elements by distance equal to a whole number or zero multiplied by half the wavelength of the incident beam of light.
- 31 -
22. The modulator according to claim 10 wherein a medium for printing upon is mechanically scanned past the single linear array to form a printed image thereon.
23. A modulator for modulating an incident beam of light having a wavelength within a visible range of wavelengths, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, each elongated element having an approximately constant cross-section between the two ends, the elements arranged parallel to each other and suspended by their respective ends above a substrate; and b. means for deforming selected ones of the elongated elements toward the substrate surface thereby entering a deformed state wherein the approximately flat reflective surface of each selected element moves coward the substrate by a grating amplitude of a whole number or zero multi lied by one-half the wavelength of the incident beam of light plus approximately one-fourth the wavelength of the incident beam of light, without the selected elongated elements contacting a surface of the substrate.
24. The modulator according to claim 23 wherein the grating amplitude is approximately one-fourth to one-third of a distance between undeformed elongated elements and the substrate.
25. The modulator according to claim 23 wherein the approximately flat reflective surface comprises approximately one-third of a length of the corresponding elongated element.
26. The modulator according to claim 23 wherein the elongated elements are grouped according to a plurality of display elements arranged in a single column v, herein when the elongated elements corresponding to a display element are undeformed, 1 he incident beam of light is reflected by the display element, and when alternate ones of elongated elements corresponding to the display element are selectively deformed, the
32 incident beam of light is diffracted by the display element.
27. The modulator according to claim 26 wherein a distance of movement of the selected ones of the elongated elements determines an intensity for the corresponding display element.
28. The modulator according to claim 26 wherein a ratio of a period of reflection to a period of diffraction determines an intensity for the corresponding display element.
29. The modulator according to claim 28 further comprising an optical system for forming an image according to a respective intensity formed by each display element.
30. The modulator according to claim 29 further comprising means for preventing light diffracted by other than the approximately flat center portions from being displayed by the optical system.
31. The modulator according to claim 30 wherein the means for preventing comprises a light shield having a slit for passing light diffracted by the approximately flat center portions and for blocking Ught diffracted by other than the approximately fla>. center portions.
32. The modulator according to claim 30 where the means for preventinj.; comprises a reflective element disposed over the two ends of each elongated element in a plane parallel to the reflective surfaces of undeformed elongated elements by distance equal to a whole number or zero multiplied by half the wavelength of the incident beam of Ught.
33. A modulator for modulating an incident beam of Ught, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat
- 33 reflective surface disposed between two ends, each elongated element h ving an approximately constant cross-section between the two ends, the elements arranged parallel to each other and suspended by their respective ends above a substrate by a distance; and b. means for placing selected ones of the elongated elements in a deform d state wherein the incident beam of Ught is diffracted by moving the approximately flat reflective surface of the selected ones toward the substrate by a grating amplitude of approximately one-fourth to one-third of the distance and for returning the selected ones of the elongated elements to an undeformed state wherein the incident beam of light is reflected.
34. The modulator according to claim 33 wherein the approximately flat reflective surface comprises approximately one-third of a length of the corresponding elongated element.
35. The modulator according to claim 33 wherein the elongated elements are grouped according to a pluraUty of display elements arranged in a single column wherein a ratio of a period of reflection to a period of diffraction determines an intensity for the corresponding display element.
36. The modulator according to claim 33 wherein the elongated elements are grouped according to a plurality of display elements arranged in a single column and wherein a distance of movement of the selected ones of the elongated elements determines an intensity for the corresponding display element.
37. The modulator according to claim 35 further comprising an optical s stem for forming an image according to a respective intensity formed by each display element.
38. The modulator according to claim 37 further comprising means for preventing light diffracted by other than the approximately flat center portions from being displayed by the optical system.
- 34 -
39. The modulator according to claim 38 wherein the means for preventing comprises a Ught shield having a slit for passing Ught diffracted by the approximatel/ flat center portions and for blocking light diffracted by other than the approximately flat center portions.
40. The modulator according to claim 38 where the means for preventing comprises a reflective element disposed over the two ends of each elongated elemen'. in a plane parallel to the reflective surfaces of undeformed elongated elements by distance equal to a whole number or zero multiplied by half the wavelength of the incident beam of Ught.
41. A method of modulating an incident beam of light having a wavelength, the method comprising steps of: a. causing the beam of Ught to impinge upon a pluraUty of elongated elements, each having an approximately flat reflective surface disposed between two ends, each elongated element having an approximately constant cross- section between the two ends, the elements arranged parallel to each other and suspended by their respective ends above a substrate by a distance; b. deforming selected ones of the elongated elements toward the subsume by moving the approximately flat reflective surface of the selected ones loward the substrate by a grating amplitude of approximately one-fourth to oiie-third of the distance thereby causing the selected ones to be in a deformed state wherein the incident beam of light is diffracted; and c. returning the selected ones of the elongated elements to an undeformed state wherein the incident beam of light is reflected.
42. The method according to claim 41 wherein the grating amplitude is approximately one-fourth to one-third of a distance between undeformed elongated elements and the substrate.
43. The method according to claim 41 wherein the approximately flat reflective
- 35 - surface comprises approximately one-third of a length of the corresponding elongated element.
44. The method according to claim 41 wherein the elongated elements are grouped according to a plurality of display elements arranged in a single column wherein a ratio of a period of reflection to a period of diffraction determines an intensity for the corresponding display element.
45. The modulator according to claim 41 wherein the elongated elements are grouped according to a plurality of display elements arranged in a single column and wherein a distance of movement of the selected ones of the elongated elements determines an intensity for the corresponding display element.
46. The method according to claim 44 further comprising an optical system for forming an image according to a respective intensity formed by each display element.
47. The method according to claim 46 further comprising means for preventing light diffracted by other than the approximately flat center portions from being displayed by the optical system.
48. The method according to claim 47 wherein the means for preventing comprises a Ught shield having a slit for passing Ught diffracted by the approximately flat center portions and for blocking Ught diffracted by other than the approximately flat center portions.
49. The method according to claim 47 where the means for preventing comprises a reflective element disposed over the two ends of each elongated element in a plane parallel to the reflective surfaces of undeformed elongated elements by distance equal to a whole number or zero multiplied by half the wavelength of the incident beam of light.
- 36 -
50. A method of modulating an incident beam of Ught having a wavelength, the method comprising steps of: a. causing the beam of light to impinge upon a pluraUty of elongated elements, each having an approximately flat reflective surface disposed between two ends, each elongated element having an approximately constant cross-section between the two ends, the elements arranged parallel to each other and suspended by their respective ends above a substrate; and b. deforming selected ones of the elongated elements toward the substrate surface thereby causing the selected ones to be in a deformed state wherein the approximately flat reflective surface of each selected element is moved toward the substrate by a grating amplitude of a whole number or zero multiplied by one-half the wavelength of the incident beam of Ught plus approximately one-fourth the wavelength of the incident beam of Ught, without the selected elongated elements contacting a surface of the substrate.
51. The method according to claim 50 wherein the grating amplitude is approximately one-fourth to one-third of a distance between undeformed elongated elements and the substrate.
52. The method according to claim 50 wherein the approximately flat reflective surface comprises approximately one-third of a length of the corresponding elongated element.
53. The method according to claim 50 wherein the elongated elements are grouped according to a pluraUty of display elements arranged in a single column wherein when the elongated elements corresponding to a display element are undeformed, the incident beam of light is reflected by the display element, and when alternate ones of elongated elements coπesponding to the display element are selectively deformed, ihe incident beam of light is diffracted by the display element
54. The modulator according to claim 53 wherein a distance of movement of the
37 selected ones of the elongated elements determines an intensity for the corresponding display element.
55. The method according to claim 53 wherein a ratio of a period of reflection to a period of diffraction determines an intensity for the corresponding display element.
56. The method according to claim 55 further comprising an optical system for forming an image according to a respective intensity formed by each display element.
57. The method according to claim 56 further comprising means for preventing Ught diffracted by other than the approximately flat center portions from being displayed by the optical system.
58. The method according to claim 57 wherein the means for preventing comprises a light shield having a slit for passing light diffracted by the approxunatel) flat center portions and for blocking Ught diffracted by other than the approximately flat eenter portions.
59. The method according to claim 57 where the means for preventing comprises a reflective element disposed over the two ends of each elongated element in a plane paraUel to the reflective surfaces of undeformed elongated elements by distance equal to a whole number or zero muWpUed by half the wavelength of the incident beam of Ught.
60. A method of forming a light modulator on a substrate, the light modulator for modulating an incident beam of Ught having a wavelength within a visible range of wavelengths, the method comprising steps of: a. forming a sacrificial layer on the substrate, wherein the sacrificial layer has a thickness that is approximately equal to the wavelength of the beam of light wherein the sacrificial layer is exposed; b. forming at least two elongated elements over the sacrificial layer, each
- 38 - elongated element coupled to the substrate at two of four locations and each elongated element having a reflective surface; and c. removing the sacrificial layer.
61. The method according to claim 60 wherein the thickness is within a range of 200 to 2000 nm.
62. The method according to claim 60 wherein the two of the four locations are proximate to ends of each of the at least two elongated elements.
63. The modulator according to claim 1 wherein the means for deformirig uses an appUed voltage such that the deformed state follows a reversible function of the applied voltage.
64. The modulator according to claim 23 wherein the means for deforming uses an applied voltage such that the deformed state follows a reversible function of the applied voltage.
65. The modulator according to claim 33 wherein the means for placing uses an applied voltage such that the deformed state follows a reversible function of the appUed voltage.
66. The method according to claim 41 wherein the step of deforming use?; an appUed voltage such that the approximately flat reflective surface follows a reversible function of the applied voltage.
67. The method according to claim 50 wherein the step of deforming uses an appUed voltage such that the deformed state follows a reversible function of the applied voltage.
68. A modulator for modulating an incident beam of light having a wavelength,
- 39 - the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged parallel to each other and suspended by their respective ends by integrally formed supports above a substrate; and b. means for deforming selected ones of the elongated elements toward the substrate thereby entering a deformed state wherein the approximately flat reflective surface of each selected element moves toward the substrate by a grating amplitude without the selected elongated elements contacting the substrate.
69. A modulator for modmating an incident beam of light having a wavelength within a visible range of wavelengths, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged parallel to each other and suspended by their respective ends by integraUy formed supports above a substrate; and b. means for deforming selected ones of the elongated elements toward the substrate surface thereby entering a deformed state wherein the approximately flat reflective surface of each selected element moves toward the substrate by a grating amplitude of a whole number or zero multiplied by one-half the wavelength of the incident beam of Ught plus approximately one-fourth the wavelength of the incident beam of Ught, without the selected elongated elements contacting a surface of the substrate.
70. A modulator for modulating an incident beam of light, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged paraUel to each other and suspended by their respective ends by integraUy formed supports above a substrate by a distance; and
40 b. means for placing selected ones of the elongated elements in a deformed state wherein the incident beam of Ught is diffracted by moving the approximately flat reflective surface of the selected ones toward the substrate by a grating ampUtude of approximately one-fourth to one-third of the distance and for returning the selected ones of the elongated elements to an undeformed state wherein the incident beam of light is reflected.
71. A method of modulating an incident beam of Ught having a wavelength, the method comprising steps of: a. causing the beam of light to impinge upon a pluraUty of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged parallel to each other and suspended by their respective ends by integrally formed supports above a substrate by a distance; b. deforming selected ones of the elongated elements toward the substrate by moving the approximately flat reflective surface of the selected ones toward the substrate by a grating amplitude of approximately one-fourth to one-third of the distance thereby causing the selected ones to be in a deformed state wherein the incident beam of Ught is diffracted; and c. returning the selected ones of the elongated elements to an undeformeil state wherein the incident beam of Ught is reflected.
72. A method of modulating an incident beam of light having a wavelength, the method comprising steps of: a. causing the beam of light to impinge upon a pluraUty of elongated elements, each having an approximately flat reflective surface disposed betweeri two ends, the elements arranged parallel to each other and suspended by their respective ends by integraUy formed supports above a substrate; and b. deforming selected ones of the elongated elements toward the substrate surface thereby causing the selected ones to be in a deformed state \Λ herein the approximately flat reflective surface of each selected element is moved
41 toward the substrate by a grating amplitude of a whole number or zero multipUed by one-half the wavelength of the incident beam of light plus approximately one-fourth the wavelength of the incident beam of light, without the selected elongated elements contacting a surface of the substrate.
73. A modulator for modulating an incident beam of light having a wavelen.-╬╛th, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged par.illel to each other and suspended by their respective ends above a substrate <╬╣nd having no framing superstructure; and b. means for deforming selected ones of the elongated elements toward the substrate thereby entering a deformed state wherein the approximately flat reflective surface of each selected element moves toward the substrate by a grating amplitude without the selected elongated elements contacting the substrate.
74. A modulator for modulating an incident beam of Ught having a wavelength within a visible range of wavelengths, the modulator comprising: a. a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged piirallel to each other and suspended by their respective ends above a substrate and having no framing superstructure; and b. means for deforming selected ones of the elongated elements toward the substrate surface thereby entering a deformed state wherein the approximately flat reflective surface of each selected element moves toward the substrate by a grating amplitude of a whole number or zero multiplied by one-half the wavelength of the incident beam of Ught plus approximately one-fourth the wavelength of the incident beam of Ught, without the selected elongated elements contacting a surface of the substrate.
42
75. A modulator for modulating an incident beam of light, the modulator comprising: a. a pluraUty of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged parallel to each other and suspended by their respective ends above a substrate by a distance and having no framing superstructure; and b. means for placing selected ones of the elongated elements in a defbrme state wherein the incident beam of light is diffracted by moving the approximately flat reflective surface of the selected ones toward the substrate by a grating ampUtude of approximately one-fourth to one-third of the distance and for returning the selected ones of the elongated elements to an undeformed state wherein the incident beam of Ught is reflected.
76. A method of modulating an incident beam of light having a wavelength, the method comprising steps of: a. causing the beam of Ught to impinge upon a plurality of elongated elements, each having an approximately flat reflective surface disposed between two ends, the elements arranged parallel to each other and suspended by tbeir respective ends above a substrate by a distance and having no framing superstructure; b. deforming selected ones of the elongated elements toward the substrate by moving the approximately flat reflective surface of the selected ones toward the substrate by a grating ampUtude of approximately one-fourth to one-third of the distance thereby causing the selected ones to be in a deformed state wherein the incident beam of Ught is diffracted; and c. returning the selected ones of the elongated elements to an undeformed state wherein the incident beam of light is reflected.
77. A method of modulating an incident beam of Ught having a wavelenrth, the method comprising steps of: a. causing the beam of light to impinge upon a plurality of elongated elements,
- 43 - each having an approximately flat reflective surface disposed between two ends, the elements arranged parallel to each other and suspended by then respective ends above a substrate and having no framing superstructure; iind deforming selected ones of the elongated elements toward the substrate surface thereby causing the selected ones to be in a deformed state wherein the approximately flat reflective surface of each selected element is moved toward the substrate by a grating amplitude of a whole number or zero multipUed by one-half the wavelength of Ihe incident beam of Ught plus approximately one-fourth the wavelength of the incident beam of Ught, without the selected elongated elements contacting a surface of the substrate.
- 44 - STATEMENT UNDER ARTICLE 19
Claims 1, 23, 33, 41, and 50 claim a light modulator including a plurality of elongated elements suspended over a substrate and means for deforming selected ones of the elongated members such that the elongated members do not contact a substrate below the elongated members. The Applicants have amended Claims 1, 23, 33, 41, and 50 to clarify that the elongated elements of Claims 1, 23, 33, 41, and 50 have an approximately constant cross-section between ends of the elongated members. None of the cited references teaches or suggests the claim limitations as amended. Accordingly, the AppUcants believe that Claims 1, 23, 33, 41, and 50 and the Dependent Claims 2-22, 24- 32, 34-40, and 51-59 are novel and include an inventive step.
Claim 60 claims a method of forming a Ught modulator. On line 8 of Claim 60 the expression "at two of the four locations" lacks antecedent basis. Accordingly, trie Applicants have amended Claim 60 to "at two of four locations" so that Claim 60 h is the correct antecedent basis. New Claim 62 is dependent on the Independent Claim 60. Claim 62 adds the Umitations that the two locations are proximate to ends of the elongated members.
New Claims 63-67 add an additional limitation to Independent Claims 1, 23. 33, 41, and 50, respectively. Accordingly, Claims 63-67 are novel and include an inventive step at least because Claims 63-67 depend on allowable base claims.
New Claims 68-72 are copies of lOriginal Claims 1, 23, 33, 41, and 50 with the further limitation that the elongated elenjients are suspended above the substrate by integrally formed supports. None of the; cited references teaches or suggests the cliiim limitations of Claims 68-72. Accordingly, the Applicants believe that Claims 68-71, are novel and include an inventive step.
New Claims 73-77 are copies of] Original Claims 1, 23, 33, 41, and 50 with the further limitation that the elongated elements, which are suspended above the substrate, have no framing structure. None of the cited references teaches or suggests the c iim limitations of Claims 73-77. Accordingly, the Applicants believe that Claims 73-77 are novel and include an inventive step.
45 -
PCT/US1999/013955 1998-06-24 1999-06-18 Method and apparatus for modulating an incident light beam for forming a two-dimensional image WO1999067671A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2000556271A JP2002519714A (en) 1998-06-24 1999-06-18 Method and apparatus for adjusting incident light beam for two-dimensional image formation
AT99930488T ATE233911T1 (en) 1998-06-24 1999-06-18 METHOD AND DEVICE FOR MODULATING A LIGHT BEAM FOR A TWO-DIMENSIONAL IMAGE REPRESENTATION
AU47021/99A AU4702199A (en) 1998-06-24 1999-06-18 Method and apparatus for modulating an incident light beam for forming a two-dimensional image
EP99930488A EP1090322B1 (en) 1998-06-24 1999-06-18 Method and apparatus for modulating an incident light beam for forming a two-dimensional image
CA002335584A CA2335584A1 (en) 1998-06-24 1999-06-18 Method and apparatus for modulating an incident light beam for forming a two-dimensional image
KR1020007014798A KR20010053201A (en) 1998-06-24 1999-06-18 Method and apparatus for modulating an incident light beam for forming a two-dimensional image
DE69905717T DE69905717T2 (en) 1998-06-24 1999-06-18 METHOD AND DEVICE FOR MODULATING A LIGHT BEAM FOR A TWO-DIMENSIONAL IMAGE DISPLAY

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/104,159 1998-06-24
US09/104,159 US6215579B1 (en) 1998-06-24 1998-06-24 Method and apparatus for modulating an incident light beam for forming a two-dimensional image

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Publication Number Publication Date
WO1999067671A1 WO1999067671A1 (en) 1999-12-29
WO1999067671B1 true WO1999067671B1 (en) 2000-02-10

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EP (1) EP1090322B1 (en)
JP (1) JP2002519714A (en)
KR (1) KR20010053201A (en)
CN (1) CN1313957A (en)
AT (1) ATE233911T1 (en)
AU (1) AU4702199A (en)
CA (1) CA2335584A1 (en)
DE (1) DE69905717T2 (en)
WO (1) WO1999067671A1 (en)

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US6215579B1 (en) 2001-04-10
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AU4702199A (en) 2000-01-10
WO1999067671A1 (en) 1999-12-29

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