CN103163719A - Stereoscopic display device - Google Patents
Stereoscopic display device Download PDFInfo
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- CN103163719A CN103163719A CN2011104095153A CN201110409515A CN103163719A CN 103163719 A CN103163719 A CN 103163719A CN 2011104095153 A CN2011104095153 A CN 2011104095153A CN 201110409515 A CN201110409515 A CN 201110409515A CN 103163719 A CN103163719 A CN 103163719A
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Abstract
The invention discloses a stereoscopic display device which comprises a screen, a projection lens, two spatial light modulators, a plurality of light sources, an optical guidance system and a composite prism. The light sources are used for lighting by turns, when one of the light sources emits light rays, the optical guidance system is used for enabling the light rays to be divided into two parts which are then respectively guided to the two spatial light modulators, and the spatial light modulators are used for reflecting the light rays. The composite prism is used for enabling the light rays which are reflected by the two spatial light modulators to be conducted to the projection lens, and the projection lens aims at a screen on a light path to enable the screen to receive the light rays which are projected by the projection lens.
Description
Technical field
The present invention is relevant for a kind of display device, and particularly relevant for a kind of 3 d display device.
Background technology
How to allow the consumer experience image true to nature, always be the constant emphasis of making great efforts of display industry circle and research unit, wherein allow eye one of be bright be that the 3D stereo display technique is used.
the manufacturer of exploitation 3D stereo display technique is very many, for example: Alioscopy, Apple, DimensionTechnologies, Fraunhofer HHI, Holografika, i-Art, NewSight, Philips, SeeFront, SeeReal Technologies, Spatial View, Tridelity, Sharp, Epson, Bolod, SpatialView, StereoGraphics, 3D Experience Ltd, Opticality, Miracube, ACT Kern, Dresden 3D GmbH, LightSpace Technologies, Sence Graphics, 4D-Vision, Dimensional Media Associates etc.Wherein again with Alioscopy, NewSight, and Holografika is the most representative.But Alioscopy and NewSight representative bore hole are viewed and admired, cheap and small size, but the three-dimensional display of low-res.Holografika represents high-res, also but bore hole is viewed and admired, but expensive and bulky three-dimensional display.The stereo display method of Alioscopy and NewSight is that the above is covered the screen of one deck raster pattern light shield (Barrier) or column lens array (Lenticular) with panel display (liquid crystal or plasma-screen television).The stereo display method of Holografika is with a lot of platform projector, throws the required image in each visual angle to each visual angle.The stereo display method of Alioscopy and NewSight is sacrificed three-dimensional resolution, exchanges various visual angles for.The stereo display method of Holografika has been used many projectors, and is therefore bulky, expensive.In order to solve above two problems, the picture element of many projectors of splicing is separately arranged, then cut apart the method that picture element corresponds to various visual angles.Cutting apart the means that picture element is used, is to be that the picture element that is stitched together is worked as panel display, and the above is covered the screen of one deck Lenticular or Barrier.
This shows, the above-mentioned existing naked solid video picture technology of looking obviously still exists inconvenience and defective, and remains further to be improved.In order to address the above problem, association area is there's no one who doesn't or isn't sought solution painstakingly, is completed by development but have no for a long time applicable mode always.Therefore, how can provide solid video picture, real one of the current important research and development problem that belongs to also becomes current association area and needs improved target badly more economically.
Summary of the invention
For solving above-mentioned technical matters of the prior art, the invention provides a kind of 3 d display device.
The invention provides a kind of 3 d display device comprises a screen, a projection lens, two spatial light modulators, a plurality of light source, a photoconduction and draws system and a composite prism.These light sources are in order to luminous in turn, and when the one in these light sources emitted beam, photoconduction draws system, and two parts also were directed to respectively two spatial light modulators in order to light is divided at least, and spatial light modulator is in order to reflection ray.To projection lens, projection lens is aimed at screen to composite prism on a light path, make screen be received from the light that projection lens throws in order to light conduction that two spatial light modulators are reflected.
Above-mentioned screen comprises a Fresnel lens to collimate lens as one.
Perhaps or moreover, screen comprises the cylindrical lens of a diffuser, one first array and the cylindrical lens of one second array.Diffuser has a relative first surface and one second.The cylindrical lens of the first array is disposed at first surface, the light that throws in order to be received from projection lens; The cylindrical lens of the second array is disposed at second, and wherein the focal length of the cylindrical lens of the second array is less than the focal length of the cylindrical lens of the first array.
Above-mentioned photoconduction draws system can comprise a Double sided mirror, two trunk modules and a plurality of collimation lens.The light that collimation lens sends in order to collimate respectively above-mentioned light source, wherein in these collimation lenses, any one light beam that sends conducts to a spatial light modulator by a trunk module after having part by the Double sided mirror reflection, and the remainder of light beam does not conduct to another spatial light modulator through Double sided mirror by another trunk module.
In addition, one trunk module can comprise a first lens, one second lens, one the 3rd lens, one first catoptron and one second catoptron, and the light beam of the above-mentioned part that is reflected by Double sided mirror sequentially is sent to the one in two spatial light modulators via first lens, the first catoptron, the second lens, the second catoptron and the 3rd lens; Moreover, another trunk module can comprise one the 4th lens, one the 5th lens, one the 6th lens, one the 3rd catoptron and one the 4th catoptron, and the light beam of the part that is wherein reflected by Double sided mirror sequentially is sent to the one in two spatial light modulators via the 4th lens, the 3rd catoptron, the 5th lens, the 4th catoptron and the 6th lens.
Above-mentioned 3 d display device also can comprise two total reflection prisms.Two total reflection prisms are arranged at respectively between composite prism and two spatial light modulators, and the light that each spatial light modulator reflects is transmitted through projection lens via its corresponding total reflection prism and composite prism.
Above-mentioned each light source all can be a light-emitting diode (LED) module.
Moreover 3 d display device also can comprise a plurality of light source drives and a digital signal processor.A plurality of light source drives are in order to drive respectively these light-emitting diode (LED) modules.Digital signal processor couples light source drive, in order to control the luminous sequential of these light-emitting diode (LED) modules.
Above-mentioned two spatial light modulators can be one first digital micromirror device and one second digital micromirror device.
Moreover 3 d display device also can comprise one first controller and a second controller.The first controller is in order to control the keying of the first digital micromirror device, and with when the first digital micromirror device is opened, composite prism is received the light that the first digital micromirror device reflects; Second controller is in order to control the keying of the second digital micromirror device, and with when the second digital micromirror device is opened, composite prism is received the light that the second digital micromirror device reflects.
In sum, technical scheme of the present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, can reach suitable technical progress, and have the extensive value on industry, it has following advantages at least:
By composite prism in conjunction with two spatial light modulators, make light not have improperly consume;
2. two spatial light modulators share above-mentioned light source, to reduce the number of entity light source; And
3. use corresponding each visual angle of a lot of platform projector compared to prior art, throw each perspective images to the method for screen, 3 d display device of the present invention need not to arrange many projection arrangements, cost not only, and the volume of reduction means significantly.
Below will be explained in detail above-mentioned explanation with embodiment, and provide further explanation to technical scheme of the present invention.
Description of drawings
Fig. 1 is the schematic diagram according to a kind of 3 d display device of one embodiment of the invention;
Fig. 2 is the calcspar according to a kind of 3 d display device of one embodiment of the invention;
Fig. 3 draws the schematic diagram of system according to a kind of photoconduction of one embodiment of the invention;
Fig. 4 is a kind of total reflection prism and the composite prism that illustrates according to one embodiment of the invention;
Fig. 5 is the schematic diagram that enters bright dipping of the spatial light modulator that illustrates according to one embodiment of the invention;
Fig. 6 is the light path of the composite prism that illustrates according to one embodiment of the invention;
Fig. 7 is the emergent pupil of the projection lens that illustrates according to one embodiment of the invention; And
Fig. 8～10th, the stereographic map of the 3 d display device at each visual angle that illustrates according to one embodiment of the invention.
Wherein, description of reference numerals is as follows:
100: 3 d display device
The cylindrical lens of 111: the first arrays
113: diffuser
131: the first spatial light modulators
141～144: light source
211～214: light source drive
230: the light source sensor
242: second controller
331,332: trunk module
410,414: total reflection prism
420: composite prism
812: the second lens
814: the four lens
816: the six lens
822: the second catoptrons
824: the four catoptrons
110: screen
The cylindrical lens of 112: the second arrays
120: projection lens
132: the second space photomodulator
190: visible area
220: digital signal processor
241: the first controllers
310: Double sided mirror
321～324: collimation lens
412,422: fully reflecting surface
811: first lens
813: the three lens
815: the five lens
821: the first catoptrons
823: the three catoptrons
V1～V8: optical image
Embodiment
In order to make narration of the present invention more detailed and complete, can be with reference to the appended various embodiment of graphic and the following stated, graphic in identical number represent same or analogous element.On the other hand, well-known element and step are not described in embodiment, to avoid that the present invention is caused unnecessary restriction.
In embodiment and claim, relate to the description of " coupling (coupled with) ", its can make a general reference an element by other elements and indirect joint to another element, or an element need not be connected directly to another element by other elements.
In embodiment and claim, unless be particularly limited to some extent for article in interior literary composition, " one " can make a general reference single one or more with " being somebody's turn to do ".
" approximately " used herein, " approximately " or " roughly " are in order to modifying the quantity of any microvariations, but this slight variations can't change its essence.Unless otherwise noted, represent that the error range of the numerical value of being modified with " approximately ", " approximately " or " roughly " is generally to allow in 20 percent in embodiment, be preferably in ten Percent, be in 5 percent more preferably.
Technical approach of the present invention is a kind of 3 d display device, and it can be applicable to kinds of displays, or is used in widely relevant sport technique segment.Fig. 1～the Figure 10 that below will arrange in pairs or groups illustrates the embodiment of 3 d display device 100.
Fig. 1 is the schematic diagram according to a kind of 3 d display device 100 of one embodiment of the invention.As shown in Figure 1,3 d display device 100 comprises screen 110, projection lens 120, the first spatial light modulator 131, second space photomodulator 132 and a plurality of light sources 141～144.Light source 141～144 is in order to luminous in turn, and when the one in light source 141～144 emitted beam, light was divided at least two parts and is directed to respectively the first spatial light modulator 131 and second space photomodulator 132.The light that first, second spatial light modulator 131,132 reflects can be conducted to projection lens 120, and projection lens 120 is aimed at screen 110 on a light path, make screen 110 be received from the light that projection lens 120 throws.Optical image V1～the V8 of all directions is provided in visible area 190 thus.
In fact, screen 110 can comprise Fresnel lens with as collimation lens.Particularly, screen 110 comprises the cylindrical lens 111 of the first array, cylindrical lens 112 and the diffuser 113 of the second array.Diffuser 113 has relative first surface and second.The cylindrical lens 111 of the first array is disposed at first surface, the light that throws in order to be received from projection lens 120; The cylindrical lens 112 of the second array is disposed at second, and wherein the focal length of the cylindrical lens 112 of the second array is less than the focal length of the cylindrical lens 111 of the first array.
It should be noted that, Fig. 1 has illustrated eight equivalent light source 141～144, so divided equally the light of each light source by the first spatial light modulator 131 and second space photomodulator 132, therefore in fact only need four entity light sources 141～144, can build the effect of eight equivalent light source.
Fig. 2 is the calcspar according to a kind of 3 d display device 100 of one embodiment of the invention.As shown in Figure 2,3 d display device 100 comprises the first controller 211, second controller 212, a plurality of light source drive 241～244, digital signal processor 220 and light source sensor 230.Structurally, light source drive 241～244 couples light source 141～144, and digital signal processor 220 couples light source drive 241～244, and light source sensor 230 couples digital signal processor 220.
When using, light source drive 241～244 is in order to difference driving light source 141～144, and light source sensor 230 is in order to the state of each light source of sensing and status data is passed to digital signal processor 220.Digital signal processor 220 is in order to control the luminous sequential of light source 141～144, and for instance, when taking turns to arbitrary light source luminescent, remaining light source is closed.
In the present embodiment, in light source 141～144, each all can be light-emitting diode (LED) module.Light-emitting diode (LED) module comprises R, G, B Tricolor LED element, so that produce optical image.
In Fig. 2,3 d display device 100 comprises the first controller 211 and second controller 212.Structurally, the first controller 211 couples the first spatial light modulator 131, and second controller 212 couples second space photomodulator 132.
When using, the first controller 211 is in order to control the keying of the first spatial light modulator 131, and with when the first spatial light modulator 131 is opened, the light that the first spatial light modulator 131 reflects can be conducted to projection lens 120; Second controller 212 is in order to control the keying of second space photomodulator 131, and with when second space photomodulator 132 is opened, the light that second space photomodulator 132 reflects can be conducted to projection lens 120.
In the present embodiment, the first spatial light modulator 131 can be the first digital micromirror device, and second space photomodulator 132 can be the second digital micromirror device, and controller 211,212 can be two and controls wafer.
Fig. 3 draws the schematic diagram of system 300 according to a kind of photoconduction of one embodiment of the invention.When the one in light source 141～144 emitted beam, photoconduction draws system 300, and two parts also were directed to respectively the first spatial light modulator 131 and second space photomodulator 132 in order to this light is divided at least.
In order to illustrate the mechanism of two spatial light modulator common light source, with reference to Fig. 3, photoconduction draws system 300 and comprises Double sided mirror 310, two trunk modules 331,332 and a plurality of collimation lens 321～324.Structurally, light source 141,142 is aimed at collimation lens 321,322 each other side by side and respectively, collimation lens 321,322 relative with trunk module 332, and trunk module 332 is in position corresponding to second space photomodulator 132; Light source 143,144 is aimed at collimation lens 323,324 each other side by side and respectively, collimation lens 323,324 relative with trunk module 331, and trunk module 331 is in position corresponding to the first spatial light modulator 131.The outlet size of Double sided mirror 310 has with respect to two trunk modules 331,332 semiaperture size, trunk module 331,332 and collimation lens 321～324 between, and approximately be miter angle between light source 141～144.
The light that collimation lens 321～324 sends in order to collimated light source 141～144 respectively, wherein the light beam that sends of collimation lens 321 conducts to spatial light modulator 131 by trunk module 331 after having part by Double sided mirror 310 reflections, and the remainder of light beam does not conduct to spatial light modulator 132 through Double sided mirror 310 by trunk module 332; Similarly, the light beam that collimation lens 322 sends conducts to spatial light modulator 131 by trunk module 331 after having part by Double sided mirror 310 reflections, and the remainder of light beam does not conduct to spatial light modulator 132 through Double sided mirror 310 by trunk module 332.
On the other hand, the light beam that collimation lens 323 sends conducts to spatial light modulator 132 by trunk module 332 after having part by Double sided mirror 310 reflections, and the remainder of light beam does not conduct to spatial light modulator 131 through Double sided mirror 310 by trunk module 331; Similarly, the light beam that collimation lens 324 sends conducts to spatial light modulator 132 by trunk module 332 after having part by Double sided mirror 310 reflections, and the remainder of light beam does not conduct to spatial light modulator 131 through Double sided mirror 310 by trunk module 331.
Then, with reference to Fig. 4 and Fig. 5, total reflection prism 410 is arranged between composite prism 420 and spatial light modulator 131.When using, total reflection prism 410 receives the light that conducts from trunk module 331, and its fully reflecting surface 412 reflexes to the first spatial light modulator 131 with light.The first spatial light modulator 131 is reflected back total reflection prism 410 with light when opening (ON), light enters composite prism 420 via total reflection prism 410 transmissions; Relatively, the first spatial light modulator 131 causes photoconduction the elsewhere and can not enter composite prism 420 when closing (OFF).
For instance, spatial light modulator 131 can be digital micromirror device, and when this digital micromirror device was opened, composite prism 420 was received the light that digital micromirror device reflects.
For the narration that makes composite prism 420 more detailed and complete, with reference to Fig. 6, total reflection prism 410,414 is arranged at respectively between composite prism 420 and spatial light modulator 131,132, and wherein total reflection prism 410,414 has same structure, this is no longer repeated give unnecessary details.When using, the light that spatial light modulator 131 reflects is transmitted through projection lens 120 via total reflection prism 410 and composite prism 420; Relatively, the light that reflects of spatial light modulator 132 is reflexed to projection lens 120 via total reflection prism 412 is rear by the fully reflecting surface 422 in composite prism 420.Thus, joined from spatial light modulator 131,132 light by projection lens 120, and conduct to projection lens 120, the emergent pupil of projection lens 120 as shown in Figure 7.
For being drawn system, above-mentioned photoconduction makes more detailed descriptionthe, with reference to Fig. 8,9,10, trunk module 331 comprises first lens 811, the second lens 812, the 3rd lens 813, the first catoptron 821 and the second catoptron 822, and the light beam of the part that is reflected by Double sided mirror 310 sequentially is sent in spatial light modulator 131 via first lens, the first catoptron, the second lens, the second catoptron and the 3rd lens.By this optical path, allow light be able to be directed in spatial light modulator 131 from Double sided mirror 310.
Although the present invention discloses as above with embodiment; so it is not to limit the present invention, anyly has the knack of this operator, without departing from the spirit and scope of the present invention; when can be used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. 3 d display device comprises:
One screen;
One projection lens is aimed at this screen on a light path;
Two spatial light modulators are in order to reflection ray;
A plurality of light sources are in order to luminous in turn;
One photoconduction draws system, and in order to when the one in described a plurality of light sources emits beam, being divided into this light at least, two parts also are directed to respectively described a plurality of spatial light modulator; And
One composite prism to this projection lens, makes this screen be received from the light that this projection lens throws in order to light conduction that described a plurality of spatial light modulators are reflected.
2. 3 d display device as claimed in claim 1, wherein this screen comprises a Fresnel lens with as collimation lens.
3. 3 d display device as claimed in claim 1, wherein this screen comprises:
One diffuser has a relative first surface and one second;
The cylindrical lens of one first array is disposed at this first surface, the light that throws in order to be received from this projection lens; And
The cylindrical lens of one second array is disposed at this second, and wherein the focal length of the cylindrical lens of this second array is less than the focal length of the cylindrical lens of this first array.
4. 3 d display device as claimed in claim 1, wherein this photoconduction draws system and comprises:
One Double sided mirror;
Two trunk modules; And
A plurality of collimation lenses, the light that sends in order to collimate respectively described a plurality of light source, conduct to one in described a plurality of spatial light modulator by the one in described a plurality of trunk modules after in wherein said a plurality of collimation lens, any one light beam that sends has part by the reflection of this Double sided mirror, the remainder of this light beam conducts to another one in described a plurality of spatial light modulator not through this Double sided mirror by the another one in described a plurality of trunk modules.
5. 3 d display device as claimed in claim 4, wherein said a plurality of trunk modules also comprise:
One first lens, one second lens, one the 3rd lens, one first catoptron and one second catoptron, the light beam of this part that is wherein reflected by this Double sided mirror sequentially is sent to the one in this two spatial light modulator via this first lens, this first catoptron, these second lens, this second catoptron and the 3rd lens; And
One the 4th lens, one the 5th lens, one the 6th lens, one the 3rd catoptron and one the 4th catoptron, the light beam of this part that is wherein reflected by this Double sided mirror sequentially is sent to the one in this two spatial light modulator via the 4th lens, the 3rd catoptron, the 5th lens, the 4th catoptron and the 6th lens.
6. 3 d display device as claimed in claim 1 also comprises:
Two total reflection prisms are arranged at respectively between this composite prism and this two spatial light modulator, and the light that each spatial light modulator reflects is transmitted through this projection lens via its corresponding this total reflection prism and this composite prism.
7. 3 d display device as claimed in claim 1, each is a light-emitting diode (LED) module wherein said a plurality of light sources.
8. 3 d display device as claimed in claim 7 also comprises:
A plurality of light source drives are in order to drive respectively described a plurality of light-emitting diode (LED) module; And
One digital signal processor couples this light source drive, in order to control the luminous sequential of described a plurality of light-emitting diode (LED) modules.
9. 3 d display device as claimed in claim 1, the one in wherein said a plurality of spatial light modulators are one first digital micromirror device and another one is one second digital micromirror device.
10. 3 d display device as claimed in claim 9 also comprises:
One first controller, in order to control the keying of this first digital micromirror device, with when this first digital micromirror device is opened, this composite prism is received the light that this first digital micromirror device reflects; And
One second controller, in order to control the keying of this second digital micromirror device, with when this second digital micromirror device is opened, this composite prism is received the light that this second digital micromirror device reflects.
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| CN201110409515.3A CN103163719B (en) | 2011-12-09 | 2011-12-09 | 3 d display device |
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| CN201110409515.3A CN103163719B (en) | 2011-12-09 | 2011-12-09 | 3 d display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104149512A (en) * | 2014-07-10 | 2014-11-19 | 公安部交通管理科学研究所 | Field-depth-variable and multi-view space dynamic imaging laser endorsement system and method |
| CN104635346A (en) * | 2013-11-12 | 2015-05-20 | 台达电子工业股份有限公司 | Stereoscopic naked-eye projection device and display device |
| CN104834174A (en) * | 2014-02-12 | 2015-08-12 | 台达电子工业股份有限公司 | Stereo display equipment and stereo display method applying same |
| CN107561722A (en) * | 2017-09-15 | 2018-01-09 | 四川大学 | 360 ° of integration imaging desktop 3D display systems |
| CN107608085A (en) * | 2017-09-15 | 2018-01-19 | 四川大学 | Based on 360 ° of integration imaging desktop 3D display devices for combining micro- pattern matrix |
| WO2019042381A1 (en) * | 2017-09-01 | 2019-03-07 | 中山大学 | Three-dimensional display system and method employing mixed temporal and spatial multiplexing |
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| US20070097501A1 (en) * | 2005-10-31 | 2007-05-03 | Miklos Stern | Color image projection system and method |
| US20080088800A1 (en) * | 2006-10-11 | 2008-04-17 | Bellis Matthew W | Spatially offset multi-imager-panel architecture for projecting an image |
| US20100079730A1 (en) * | 2008-09-26 | 2010-04-01 | Casio Computer Co., Ltd. | Projection apparatus and projection method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104635346A (en) * | 2013-11-12 | 2015-05-20 | 台达电子工业股份有限公司 | Stereoscopic naked-eye projection device and display device |
| CN104834174A (en) * | 2014-02-12 | 2015-08-12 | 台达电子工业股份有限公司 | Stereo display equipment and stereo display method applying same |
| CN104149512A (en) * | 2014-07-10 | 2014-11-19 | 公安部交通管理科学研究所 | Field-depth-variable and multi-view space dynamic imaging laser endorsement system and method |
| WO2019042381A1 (en) * | 2017-09-01 | 2019-03-07 | 中山大学 | Three-dimensional display system and method employing mixed temporal and spatial multiplexing |
| CN107561722A (en) * | 2017-09-15 | 2018-01-09 | 四川大学 | 360 ° of integration imaging desktop 3D display systems |
| CN107608085A (en) * | 2017-09-15 | 2018-01-19 | 四川大学 | Based on 360 ° of integration imaging desktop 3D display devices for combining micro- pattern matrix |
| CN107608085B (en) * | 2017-09-15 | 2019-09-03 | 四川大学 | Based on 360 ° of integration imaging desktop 3D display devices for combining micro- pattern matrix |
| CN107561722B (en) * | 2017-09-15 | 2019-09-03 | 四川大学 | 360 ° of integration imaging desktop 3D display systems |
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| CN103163719B (en) | 2016-06-01 |
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