CN103185969A - Three-dimensional display device - Google Patents
Three-dimensional display device Download PDFInfo
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- CN103185969A CN103185969A CN2011104522755A CN201110452275A CN103185969A CN 103185969 A CN103185969 A CN 103185969A CN 2011104522755 A CN2011104522755 A CN 2011104522755A CN 201110452275 A CN201110452275 A CN 201110452275A CN 103185969 A CN103185969 A CN 103185969A
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- lens
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- polarized light
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Abstract
A three-dimensional display device comprises a projecting lens, a light source, a first polarized optical splitter, a second polarized optical splitter, a first optical guidance system and a second optical guidance system. The light source is used for emitting non-polarized light. The first polarized optical splitter is used for dividing the non-polarized light to P polarized light and S polarized light. The first optical guidance system is used for guiding the P polarized light to the second polarized optical splitter and the second optical guidance system is used for guiding the S polarized light to the second polarized optical splitter. The second polarized optical splitter is used for combining the P polarized light and the S polarized light and transmitting the P polarized light and the S polarized light to the projecting lens. The three-dimensional display device is capable of shortening a light path, reducing optical loss and shortening the back focal length of the projecting lens.
Description
Technical field
The present invention relates to a kind of display device, and be particularly related to a kind of 3 d display device.
Background technology
How to allow the consumer more 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.
From technical standpoint, it is to utilize people's binocular parallax to be effective that 3D shows, mainly is divided into the bore hole 3D stereo display technique that need wear special spectacles and need not wear special spectacles.Wherein, the 3D stereo display technique that need wear polaroid glasses is divided into two kinds of active polaroid glasses and passive type polaroid glasses again.The problem of active polaroid glasses is that polaroid glasses are heavier, price is high and must replaces battery.The passive type polaroid glasses then need to arrange in pairs or groups and have two kinds of different polarisations with the display of two pictures about showing.
With reference to United States Patent (USP) (US 7690794), a kind of 3D projection display equipment is as shown in Figure 1 proposed, it comprises polarization optical splitter 10 and two photomodulators, so there is following point in this framework:
1.P the light splitting of polarized light and S polarized light is all finished by polarization optical splitter 20 with merging, photomodulator can be digital micromirror device (DMD) 30a, 30b, for digital micromirror device, the path of incident light is different from catoptrical path, and the path of these two light has different incident angles.Because the polarization light splitting is quite responsive for angle, must adopt the polarization optical splitter of particular design can deal with different incident angles;
2. must quarter-wave lengthy motion picture 31a, 31b be set at photomodulator 30a, 30b.When light turnover photomodulator, light can pass through twice of quarter-wave lengthy motion picture and change the polarized state of light.Moreover the quarter-wave lengthy motion picture is quite responsive for the angle of light, and when the light of turnover quarter-wave lengthy motion picture had different incident angles, the light consume was inevasible;
3. as shown in Figure 2, the incident light 21 in digital micromirror device is to the angular direction from it.As shown in Figure 3, Figure 4, when the both sides that digital micromirror device 30a, 30b are arranged at polarization optical splitter 10, must adopt from two different two travel path of incident light to the angular direction, or adopt two kinds of digital micromirror devices to have the pivot of two pairs of angular direction.If do not adopt above dual mode, then need adopt framework as shown in Figure 1, thus, can cause the back focal length of bulky polarization optical splitter 20 and projection lens 50 than shortcomings such as length.
This shows that existing 3D stereo display technique still exists inconvenience and defective, 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.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
Therefore, a purpose of the present invention is that a kind of 3 d display device is being provided.
The invention provides a kind of 3 d display device, comprise a projection lens, a light source, one first polarization optical splitter, one second polarization optical splitter, one first photoconduction draws system and one second photoconduction draws system.Light source is in order to send nonpolarized light, the first polarization optical splitter is in order to be divided into nonpolarized light one P polarized light and a S polarized light, first photoconduction draws system in order to the P polarized light is directed to the second polarization optical splitter, second photoconduction draws system in order to the S polarized light being directed to the second polarization optical splitter, and the second polarization optical splitter conducts to projection lens in order to P polarized light and S polarized light can be merged.
First photoconduction draws system and comprises one first spatial light modulator and one first total reflection prism.First total reflection prism is in order to reflex to first spatial light modulator with the P polarized light, with P polarized light reflected back first total reflection prism, and then makes the P polarized light be transmitted through the second polarization optical splitter from first total reflection prism by first spatial light modulator.
The first above-mentioned photoconduction draws system and comprises one first lens, one second lens, one the 3rd lens, one first catoptron and one second catoptron, and wherein the P polarized light from the first polarization optical splitter is sent to first total reflection prism via first lens, first catoptron, second lens, second catoptron and the 3rd lens in regular turn.
The second above-mentioned photoconduction draws system and comprises one second spatial light modulator and one second total reflection prism.Second total reflection prism is in order to reflex to second spatial light modulator with the S polarized light, with S polarized light reflected back second total reflection prism, and then makes the S polarized light be transmitted through the second polarization optical splitter from second total reflection prism by second spatial light modulator.
The second above-mentioned photoconduction draws system and comprises one the 4th lens, one the 5th lens, one the 6th lens, one the 3rd catoptron and one the 4th catoptron, and wherein the S polarized light from the first polarization optical splitter is sent to second total reflection prism via the 4th lens, the 3rd catoptron, the 5th lens, the 4th catoptron and the 6th lens in regular turn.
First spatial light modulator can be one first digital micromirror device, and second spatial light modulator can be one second digital micromirror device.
Above-mentioned 3 d display device also can comprise an integration rod.Integration rod couples light source, so that light conducts to the first polarization optical splitter by integration rod.
In sum, technical scheme of the present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, can reach suitable technical progress, and have the extensive value on the industry, it has following advantage at least:
1. the collocation of two different polarization optical splitters is used, and one in order to dividing P polarized light and S polarized light, and another person is P polarized light and the merging of S polarized light, and both respectively get the chief and shortening light path;
2. the spatial light modulator top need not to carry the quarter-wave lengthy motion picture, to lower the light consume; And
3. need not spatial light modulator directly is contained on the polarization optical splitter, so as to the back focal length of effective shortening projection lens.
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
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, the description of the drawings is as follows:
Fig. 1 is a kind of synoptic diagram of existing 3D projection display equipment;
Fig. 2 is the synoptic diagram of a kind of digital micromirror device among Fig. 1;
Fig. 3, Fig. 4 are the index paths of digital micromirror device collocation polarization optical splitter;
Fig. 5 is the synoptic diagram according to a kind of 3 d display device of one embodiment of the invention;
Fig. 6 is the synoptic diagram that draws system according to a kind of photoconduction of one embodiment of the invention; And
Fig. 7 is the stereographic map of the 3 d display device at each visual angle of illustrating according to one embodiment of the invention to Fig. 9.
Wherein, description of reference numerals is as follows:
100: 120: the first polarization optical splitters of 3 d display device
110: 140: the first photoconductions of projection lens draw system
142: the first total reflection prisms of 130: the second polarization optical splitters
151: the second spatial light modulators of 141: the first spatial light modulators
Photoconduction drew system 160 in 150: the second: light source
221: the first lens of 152: the second total reflection prisms
210: 223: the three lens of integration rod
225: the five lens of 222: the second lens
231: the first catoptrons of 224: the four lens
233: the three catoptrons of 226: the six lens
232: the second catoptrons 610,620: light path
234: the four catoptrons 10,20: polarization optical splitter
31a: a wavelength sheet 30a of four minutes: digital micromirror device
31b: a wavelength sheet 30b of four minutes: digital micromirror device
50: projection lens
Embodiment
In order to make narration of the present invention more detailed and complete, can be with reference to accompanying drawing and the various embodiment of the following stated, identical number represents same or analogous element in the accompanying drawing.On the other hand, well-known element and step are not described among the embodiment, to avoid that the present invention is caused unnecessary restriction.
In embodiment and claim, relate to the description of " coupling (coupled with) ", it can be made a general reference an element and be connected to another element indirectly by other elements, or an element need not be connected directly to another element by other elements.
In embodiment and claim, unless limit to some extent especially for article in the interior literary composition, " one " can make a general reference one or more with " being somebody's turn to do ".
Technology aspect 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 relevant sport technique segment widely.Fig. 5～the Fig. 9 that below will arrange in pairs or groups illustrates the embodiment of 3 d display device.
Fig. 5 is the synoptic diagram according to a kind of 3 d display device 100 of one embodiment of the invention.As shown in Figure 5,3 d display device comprises projection lens 110, light source 160, the first polarization optical splitter 120, the second polarization optical splitter 130, first photoconduction draws system 140 and second photoconduction draws system 150.Light source 160 is in order to send nonpolarized light, the first polarization optical splitter 120 is in order to be divided into nonpolarized light one P polarized light and a S polarized light, first photoconduction draws system 140 in order to the P polarized light is directed to the second polarization optical splitter 130, second photoconduction draws system 150 in order to the S polarized light is directed to the second polarization optical splitter, the second polarization optical splitter 130 conducts to projection lens 110 in order to P polarized light and S polarized light can be merged, again with image projection to screen, and human eye is when viewing and admiring the image of screen, can carry polaroid glasses, allow human eye see the different image in the left and right sides, produce stereoscopic sensation.
Particularly, first photoconduction draws system 140 and comprises first spatial light modulator 141 and first total reflection prism 142.First total reflection prism 142 is in order to reflex to the P polarized light first spatial light modulator 141, with P polarized light reflected back first total reflection prism 142, then make the P polarized light be transmitted through the second polarization optical splitter 130 from first total reflection prism 142 by first spatial light modulator 141.
Similarly, second photoconduction draws system 150 and comprises second spatial light modulator 151 and second total reflection prism 152.Second total reflection prism 152 is in order to reflex to the S polarized light second spatial light modulator 151, with S polarized light reflected back second total reflection prism 152, then make the S polarized light be transmitted through the second polarization optical splitter 130 from second total reflection prism 152 by second spatial light modulator 151.
For instance, first spatial light modulator can be one first digital micromirror device (DigitalMicro-mirror Device, DMD), second spatial light modulator can be one second digital micromirror device.When digital micromirror device when opening (ON), with light reflected back total reflection prism, light is via the total reflection prism transmission; On the contrary, when digital micromirror device when closing (OFF), photoconduction is caused the elsewhere.
Fig. 6 is the synoptic diagram that draws the optical path of system according to a kind of photoconduction of one embodiment of the invention.Should be appreciated that, be that the optical path that draws system with first photoconduction that the P polarized light is passed through is example in the present embodiment, and second photoconduction that is passed through as for the S polarized light draws system and also has same optical path, and this is repeated no more.
As shown in Figure 6, first photoconduction draws system and comprises first lens 221, second lens 222 and the 3rd lens 223, wherein from the P polarized light of the first polarization optical splitter 120 from first lens 221 via light path 610 to second lens 222, be sent to first total reflection prism 142 from second lens 222 via light path 620 to the 3rd lens 223 again.
On the other hand, 3 d display device also comprises an integration rod 210, and integration rod 210 couples light source 160, so that light conducts to the first polarization optical splitter 120 by integration rod 210, so as to uniform light.
Fig. 7 to Fig. 9 is the stereographic map of the 3 d display device 100 at each visual angle of illustrating according to one embodiment of the invention.The first above-mentioned photoconduction draws system and comprises first lens 221, first catoptron 231, second lens 222, second catoptron 232 and the 3rd lens 223.On optical path, P polarized light from the first polarization optical splitter 120 is sent to first total reflection prism 142 via first lens 221, first catoptron 231, second lens 222, second catoptron 232 and the 3rd lens 223 in regular turn, being the light path 610 of signal in the corresponding diagram 6 after wherein will the light path of light ray bending being opened via first catoptron 231, will be the light path 620 of signal in the corresponding diagram 6 after will the light path of light ray bending being opened via second catoptron 232.
The second above-mentioned photoconduction draws system and comprises the 4th lens 224, the 5th lens 225, the 6th lens 226, the 3rd catoptron 233 and the 4th catoptron 234, and wherein the S polarized light from the first polarization optical splitter 120 is sent to second total reflection prism 152 via the 4th lens 224, the 3rd catoptron 233, the 5th lens 225, the 4th catoptron 234 and the 6th lens 226 in regular turn.
Compared to existing technical scheme, P polarized light of the present invention is all realized by different polarization optical splitters 120,130 with merging with the light splitting of S polarized light, be need not to adopt bulky polarization optical splitter 20, and have short back Jiao.Moreover, need not to carry the quarter-wave lengthy motion picture with less light loss.
On the other hand, the spacing of projection lens 110 and first spatial light modulator 141, the thickness that is slightly larger than the first polarization optical splitter 120 adds the thickness of second total reflection prism 152; The spacing of projection lens 110 and second spatial light modulator 151, the thickness that is slightly larger than the second polarization optical splitter 130 adds the thickness of second total reflection prism 152.
On real the work, the spacing of projection lens 110 and first spatial light modulator 141 deducts 10mm, adds the thickness of first total reflection prism 142 less than the thickness of the second polarization optical splitter 130; The spacing of projection lens 110 and second spatial light modulator 151 deducts 10mm, adds the thickness of second total reflection prism 152 less than the thickness of the second polarization optical splitter 130.
Though the present invention discloses as above with embodiment; so it is not in order to limit the present invention; any those of ordinary skills without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking appended the scope that claim defines.
Claims (9)
1. a 3 d display device is characterized in that, comprises:
One projection lens;
One light source is in order to send nonpolarized light;
One first polarization optical splitter is in order to be divided into this nonpolarized light one P polarized light and a S polarized light;
One second polarization optical splitter;
One first photoconduction draws system, in order to this P polarized light is directed to this second polarization optical splitter; And
One second photoconduction draws system, and in order to this S polarized light is directed to this second polarization optical splitter, wherein this second polarization optical splitter conducts to this projection lens in order to this P polarized light and this S polarized light can be merged.
2. 3 d display device as claimed in claim 1, wherein this first photoconduction draws system and comprises:
One first spatial light modulator; And
One first total reflection prism, in order to this P polarized light is reflexed to this first spatial light modulator, with this this first total reflection prism of P polarized light reflected back, and then make this P polarized light be transmitted through this second polarization optical splitter from this first total reflection prism by this first spatial light modulator.
3. 3 d display device as claimed in claim 2, wherein this first photoconduction draws system and comprises:
One first lens, one second lens, one the 3rd lens, one first catoptron and one second catoptron, wherein this P polarized light from this first polarization optical splitter is sent to this first total reflection prism via these first lens, this first catoptron, these second lens, this second catoptron and the 3rd lens in regular turn.
4. 3 d display device as claimed in claim 3, wherein this second photoconduction draws system and comprises:
One second spatial light modulator; And
One second total reflection prism, in order to this S polarized light is reflexed to this second spatial light modulator, with this this second total reflection prism of S polarized light reflected back, and then make this S polarized light be transmitted through this second polarization optical splitter from this second total reflection prism by this second spatial light modulator.
5. 3 d display device as claimed in claim 4, wherein this second photoconduction draws system and comprises:
One the 4th lens, one the 5th lens, one the 6th lens, one the 3rd catoptron and one the 4th catoptron, wherein this S polarized light from this first polarization optical splitter is sent to this second total reflection prism via the 4th lens, the 3rd catoptron, the 5th lens, the 4th catoptron and the 6th lens in regular turn.
6. 3 d display device as claimed in claim 4, wherein this first spatial light modulator is one first digital micromirror device, this second spatial light modulator is one second digital micromirror device.
7. 3 d display device as claimed in claim 4, wherein the spacing of this projection lens and this first spatial light modulator adds the thickness of this second total reflection prism greater than the thickness of this first polarization optical splitter; The spacing of this projection lens and this second spatial light modulator adds the thickness of this second total reflection prism greater than the thickness of this second polarization optical splitter.
8. 3 d display device as claimed in claim 4, wherein the spacing of this projection lens and this first spatial light modulator deducts 10mm, adds the thickness of this first total reflection prism less than the thickness of this second polarization optical splitter; The spacing of this projection lens and this second spatial light modulator deducts 10mm, adds the thickness of this second total reflection prism less than the thickness of this second polarization optical splitter.
9. 3 d display device as claimed in claim 1 also comprises:
One integration rod couples this light source, so that this nonpolarized light conducts to this first polarization optical splitter by this integration rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104522755A CN103185969A (en) | 2011-12-29 | 2011-12-29 | Three-dimensional display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104522755A CN103185969A (en) | 2011-12-29 | 2011-12-29 | Three-dimensional display device |
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| CN103185969A true CN103185969A (en) | 2013-07-03 |
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| CN2011104522755A Pending CN103185969A (en) | 2011-12-29 | 2011-12-29 | Three-dimensional display device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62208019A (en) * | 1986-03-10 | 1987-09-12 | Olympus Optical Co Ltd | Single objective stereoscopic microscope |
| CN1463558A (en) * | 2001-05-31 | 2003-12-24 | 皇家菲利浦电子有限公司 | Image display system |
| CN1837896A (en) * | 2005-03-25 | 2006-09-27 | 精工爱普生株式会社 | Image display device |
| CN1322762C (en) * | 2001-06-19 | 2007-06-20 | 英特尔公司 | Projection engine |
| CN101408676A (en) * | 2007-10-09 | 2009-04-15 | 鸿富锦精密工业（深圳）有限公司 | Stereo projection optical system |
-
2011
- 2011-12-29 CN CN2011104522755A patent/CN103185969A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62208019A (en) * | 1986-03-10 | 1987-09-12 | Olympus Optical Co Ltd | Single objective stereoscopic microscope |
| CN1463558A (en) * | 2001-05-31 | 2003-12-24 | 皇家菲利浦电子有限公司 | Image display system |
| CN1322762C (en) * | 2001-06-19 | 2007-06-20 | 英特尔公司 | Projection engine |
| CN1837896A (en) * | 2005-03-25 | 2006-09-27 | 精工爱普生株式会社 | Image display device |
| CN101408676A (en) * | 2007-10-09 | 2009-04-15 | 鸿富锦精密工业（深圳）有限公司 | Stereo projection optical system |
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Application publication date: 20130703 |