CN101051172A - Projector - Google Patents
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- CN101051172A CN101051172A CN 200610074009 CN200610074009A CN101051172A CN 101051172 A CN101051172 A CN 101051172A CN 200610074009 CN200610074009 CN 200610074009 CN 200610074009 A CN200610074009 A CN 200610074009A CN 101051172 A CN101051172 A CN 101051172A
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- light beam
- photomask
- projection arrangement
- light
- described projection
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Abstract
A projection device consists of luminous unit for emitting out a light beam, relay lens set with notch at edge and used for receiving light beam emitted from luminous unit, multiple light mask fixed in relay lens near to said notch, reflection light valve set on transmission path of said light beam and used for receiving light beam emitted from relay lens as well as used for modulating light beam to be image light beam, projection lens set at position of said notch in relay lens and used for receiving image light beam emitted from reflection light valve as well as used for projecting said image light beam onto screen.
Description
Technical field
The present invention relates to a kind of display device, particularly relate to a kind of projection arrangement.
Background technology
Consult Fig. 1, the projection arrangement 1 of its existing non-telecentric optical system (non-telecentric optical system) is applicable to image is projeced on the screen 16, and comprise a luminescence unit 11, a condenser (condenser) 12, a relay lens (relay lens) 13, the one non-parallel reflection of incident light formula light valve of acceptance (light valve) 14, an and projection lens (projection lens) 15.
Wherein luminescence unit 11 comprises light emitting diode (Light EmittingDiode, LED) the 111 and one uniform integration rod of light intensity distributions (integrated rod) 112 that makes this light beam of a plurality of emission light beams.This condenser 12 is received from this light beam that this integration rod 112 penetrates.
This relay lens 13 comprises that one is recessed to form the unfilled corner 131 at the edge, and is received from this light beam that this integration rod 112 penetrated and passed this condenser 12.This relay lens 13 matches with condenser 12 to adjust beam size (beam size), in detail, it is distance decision by 13 of this condenser 12 and relay lenss that this light beam passes beam size behind this condenser 12 and the relay lens 13, and the distance that this condenser 12 and relay lens are 13 needs to decide according to focal length, that is by selecting the condenser 12 and the focal length of relay lens 13 to adjust the size of outgoing beam.This optical valve in reflection type 14 will become image strip from this light beam modulation that this relay lens 13 penetrates.This projection lens 15 receives and throws this image strip to this screen 16.
When existing projection arrangement 1 is low offset (offset), be that side-play amount is 100%～110%, must make this relay lens 13 very close to this projection lens 15, so this relay lens 13 has designed this unfilled corner 131 for avoiding this projection lens 15, and the lower then unfilled corner 131 of side-play amount is bigger.The irregularly shaped meeting at these unfilled corner 131 places causes the spectrophotometric result as prism, and the light beam at these relay lens 13 contiguous these unfilled corner 131 places of incident just can be by beam split, and as shown in Figure 2, the color that is projeced into the image on the screen 16 can be inhomogeneous.That is when the image on the screen 16 should all be white, but obviously seen coloured light such as red, indigo plant by beam split because of this unfilled corner 131 causes this light beam at the image of screen 16 corners, it is big and the color uniformity coefficient is low to cause being projeced into the aberration (color deviation) (difference of the chromaticity coordinates of diverse location on the screen) of image in this corner.
Summary of the invention
The object of the present invention is to provide a kind of projection arrangement that aberration is little and the color uniformity coefficient is high that is projeced into the image on the screen.
So projection arrangement of the present invention is applicable to an image strip is projeced on the screen, and comprise a luminescence unit, a relay lens, a plurality of photomask, an optical valve in reflection type, and a projection lens.Wherein this luminescence unit is launched a light beam.
This relay lens is disposed on the bang path of this light beam, in order to being received from this light beam that this luminescence unit penetrates, and comprises that one is recessed to form the unfilled corner at the edge.
This each photomask is fixed in surperficial and contiguous this unfilled corner of this relay lens and is distributed in distance.
This optical valve in reflection type and this relay lens are disposed on the bang path of this light beam at intervals, also this light beam modulation are become image strip with this light beam that is received from this relay lens ejaculation.This projection lens is adjacent to the unfilled corner place of this relay lens, in order to receive the image strip that this optical valve in reflection type reflects and to be projected on this screen.
Effect of the present invention is by increasing a plurality of photomasks that are fixed in this relay lens and are close to this unfilled corner and are distributed in distance, the light of some wavelength in the light beam of this each photomask of incident is blocked by this each photomask, to slow down the irregularly shaped spectrophotometric result that is caused at this unfilled corner place as prism, the color that then is projeced into the image on the screen can be more even, so the aberration of image is little and color uniformity coefficient height.
Description of drawings
Fig. 1 is a synoptic diagram, and it illustrates existing projection arrangement;
Fig. 2 is a lab diagram, and it is big and the color uniformity coefficient is low that the existing projection arrangement of its explanation is projeced into the aberration of the image in a corner on the screen;
Fig. 3 is a synoptic diagram, first preferred embodiment of its explanation projection arrangement of the present invention;
Fig. 4 is a synoptic diagram, and its light source that this first preferred embodiment is described has four light emitting diodes;
Fig. 5 is a stereographic map, and it illustrates that a plurality of photomasks of this first preferred embodiment are fixed in the surface of this relay lens and contiguous this unfilled corner and are distributed in distance;
Fig. 6 is a synoptic diagram, and its each photomask that this first preferred embodiment is described is rectangle;
Fig. 7 is a synoptic diagram, and its this each photomask that this first preferred embodiment is described is spaced according to alternate manner;
Fig. 8 is a synoptic diagram, and its this each photomask that this first preferred embodiment is described is spaced according to alternate manner;
Fig. 9 is a synoptic diagram, and its this each photomask that this first preferred embodiment is described is spaced according to alternate manner;
Figure 10 is a synoptic diagram, and it illustrates this each photomask arrangement interlaced with each other of this first preferred embodiment;
Figure 11 is a synoptic diagram, and its this each photomask that this first preferred embodiment is described is for oval;
Figure 12 is a lab diagram, and it illustrates that the image strip of this first preferred embodiment is projeced into the little and color uniformity coefficient height of aberration of the image in a corner on the screen;
Figure 13 is a synoptic diagram, second preferred embodiment of its explanation projection arrangement of the present invention; And
Figure 14 is a synoptic diagram, the 3rd preferred embodiment of its explanation projection arrangement of the present invention.
The main element symbol description
1 projection arrangement
11 luminescence units
111 light emitting diodes
112 integration rod
12 condensers
13 relay lenss
131 unfilled corners
14 optical valve in reflection type
15 projection lens
16 screens
2 screens
3 luminescence units
3 ' luminescence unit
31 light sources
31 ' light source
311 light emitting diodes
32 integration rod
33 colour wheels
41 condensers
42 relay lenss
421 unfilled corners
422 planes of incidence
423 exit facets
43 photomasks
430 gratings
5 optical valve in reflection type
6 projection lens
7 catoptrons
71 unfilled corners
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to three graphic preferred embodiments, can clearly present.
Before the present invention is described in detail, be noted that in the following description content similar elements is to represent with identical numbering.
Consult Fig. 3, first preferred embodiment of projection arrangement of the present invention is to be applicable to an image strip is projeced on the screen 2, and comprise a luminescence unit 3, a condenser 41, a relay lens 42, a plurality of photomask 43, an optical valve in reflection type 5, an and projection lens 6.
This luminescence unit 3 comprises the light source 31 of launching a light beam, and one be disposed on the bang path of this light beam at intervals with this light source 31 and make the uniform integration rod 32 of light intensity distributions of this light beam, and this light source 31 has a plurality of light emitting diodes of lighting in regular turn 311.In the present embodiment, this light source 31 is to have four light emitting diodes 311 as illustrated in fig. 4, and wherein two is green light LED (G) 311, other two are respectively red light-emitting diode (R) 311 and blue light-emitting diode (B) 311, but do not exceed with this quantity, emission wavelength or arrangement position.
Consult Fig. 3 and Fig. 5, this condenser 41 is disposed on the bang path of this light beam, this light beam that penetrates in order to the integration rod 32 that is received from this luminescence unit 3.
This relay lens 42 is disposed on the bang path of this light beam at intervals with this condenser 41, penetrates and passes this light beam of this condenser 41 in order to the integration rod 32 that is received from this luminescence unit 3, and comprise that one is recessed to form the unfilled corner 421 at the edge.What deserves to be mentioned is the non-telecentric optical system that side-play amount (offset) is low more, the unfilled corner 421 of relay lens 42 is big more.
Light beam from this integration rod 32 penetrates passes after this condenser 41 and the relay lens 42 in regular turn, and beam size can be adjusted.Beam size is the distance decision by 42 of this condenser 41 and relay lenss, and the distance of this condenser 41 and 42 of relay lenss needs decide according to focal length, that is adjusts the size of outgoing beam by the focal length of selecting condenser 41 and relay lens 42.
In the present embodiment, this relay lens 42 is a biconvex lens, but also can be biconcave lens or concave-convex lens.
This each photomask 43 is fixed in surface and contiguous this unfilled corner 421 of this relay lens 42, and is distributed in distance.Then this luminescence unit 3, condenser 41, relay lens 42 constitute an illuminator with photomask 43.
Consult Fig. 6, in the present embodiment, this each photomask 43 roughly is parallel to each other and is spaced to form a grating 430, and each photomask 43 is rectangle and also is black, the penetrance that makes 43 pairs of visible lights of each photomask is zero, and the patch that its production method for example can be by pasting black is as this each photomask 43.Yet, the color of this each photomask 43, shape, arrangement and penetrance be not as limit, for example: this each photomask 43 can be the translucent photomask that light to different wave length has different penetrances or respectively the light of different wave length had different penetrances, or this each photomask 43 also can be as Fig. 7, Fig. 8 and arrangement shown in Figure 9.Consult Figure 10, this each photomask 43 also can be divided into two groups, same group photomask 43 bearing of trends arrangement spaced in parallel to each other, and organize the mutual vertical interlaced of bearing of trend of photomask 43 with another.This each photomask 43 also can be oval as shown in figure 11.
Consult Fig. 3, this relay lens 42 also has a plane of incidence 422 and that receives this light beam and supplies the exit facet 423 of this light beam ejaculation, and this each photomask 43 is fixed on this plane of incidence 422 in the present embodiment.But this each photomask 43 also can be fixed on this exit facet 423.
This optical valve in reflection type 5 is disposed on the bang path of this light beam at intervals with this relay lens 42, also this light beam modulation is become image strip with this light beam that is received from these relay lens 42 ejaculations.In the present embodiment, this optical valve in reflection type 5 is digital micromirror elements (Digital Micromirror Device, DMD), but also can for liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) or raster pattern light valve (grating light valve).
6 of this projection lens are in order to receiving the image strip that this optical valve in reflection type 5 reflected and to be projected on this screen 2, and this projection lens 6 is adjacent to these unfilled corner 421 places of this relay lens 42.
In the light beam of this each photomask 43 of incident, the light of some wavelength can be blocked by contiguous this unfilled corner 421 and this each photomask 43 that is distributed in distance, to slow down the irregularly shaped spectrophotometric result as prism that is caused at these unfilled corner 421 places.As shown in figure 12, when the image on the screen 2 should all be when white, because of slowing down spectrophotometric result, these photomasks 43 still keep white at the image of screen 2 corners, so the aberration of image is little and color uniformity coefficient height.
Consult Figure 13, second preferred embodiment of projection arrangement of the present invention is different with this first preferred embodiment to be that this light source 31 ' is a light source 31 ' that white light beam can be provided, this light source 31 ' can be white light emitting diode, ultrahigh pressure mercury lamp (Ultra High Pressure lamp, UHP lamp), metal halid lamp (metal halide lamp), and one of them person of xenon lamp (xenon lamp), and this luminescence unit 3 ' comprises that also one is disposed at colour wheel (colorwheel) 33 on the bang path of this light beam at intervals with this light source 31 '.In the present embodiment, the employing ultrahigh pressure mercury lamp is a light source 31 ', and this integration rod 32 is positioned at 42 of this colour wheel 33 and this relay lenss, but when to adopt white light emitting diode be light source 31 ', and this integration rod 32 also can be positioned at 33 of this light source 31 ' and this colour wheels.
Consult Figure 14, the different functions that are to replace this relay lens 42 of the 3rd preferred embodiment of projection arrangement of the present invention by a catoptron 7 with this first preferred embodiment.Then this luminescence unit 3, condenser 41, catoptron 7 constitute an illuminator with photomask 43.
This catoptron 7 is disposed on the bang path of this light beam at intervals with this condenser 41, penetrates and passes this light beam of this condenser 41 in order to reflection from the integration rod 32 of this luminescence unit 3, and comprise that one is recessed to form the unfilled corner 71 at the edge.In the present embodiment, this catoptron 7 is a concave mirror, but also can be convex mirror.
This optical valve in reflection type 5 is disposed on the bang path of this light beam at intervals with this catoptron 7, to be received from this light beam that this catoptron 7 reflects and this light beam modulation is become image strip.
This projection lens 6 is able to more closely be adjacent to these unfilled corner 71 places of this catoptron 7 because of the unfilled corner 71 of catoptron 7.Yet the irregularly shaped spectrophotometric result that but causes as prism at these unfilled corner 71 places, the light beam at these catoptron 7 contiguous these unfilled corner 71 places of incident just can be reflexed to this optical valve in reflection type 5 again by beam split.
This each photomask 43 is fixed in the surface of this catoptron 7 and contiguous this unfilled corner 71 and is distributed in distance, and the light of some wavelength in the light beam of this each photomask 43 of incident is not reflected, to slow down spectrophotometric result because of this each photomask 43.
In the present embodiment, the light source 31 of this luminescence unit 3 has four light emitting diodes 311, but not as limit.Also can adopt the luminescence unit 3 ' of second preferred embodiment.
Conclude above-mentioned, projection arrangement of the present invention is by increasing a plurality of this relay lens 42 or catoptron 7 and spaced photomasks 43 of contiguous this unfilled corner 421,71 and warp suitable design ground of being fixed in, make in the light beam of these photomasks 43 of incident, the light of some wavelength is blocked by these photomasks 43 or because of this each photomask 43 is not reflected, to slow down the irregularly shaped spectrophotometric result as prism that is caused at these unfilled corner 421,71 places.The color that then is projeced into the image on the screen 2 can be more even, that is when the image on the screen 2 should all be white, coloured light such as the image at screen 2 corners is red with regard to can obviously not seeing, indigo plant, can still keep white because of this each photomask 43 slows down spectrophotometric result, so the aberration of image is little and color uniformity coefficient height.
Above-described only is preferred embodiment of the present invention, can not limit scope of the invention process with this, and promptly the simple equivalent of being done according to claim of the present invention and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.
Claims (18)
1. projection arrangement is applicable to an image strip is projeced on the screen, and comprises:
One luminescence unit is launched a light beam;
One relay lens is disposed on the bang path of this light beam, in order to being received from this light beam that this luminescence unit penetrates, and comprises that one is recessed to form the unfilled corner at the edge;
A plurality of photomasks are fixed in the surface of this relay lens and contiguous this unfilled corner and are distributed in distance;
One optical valve in reflection type is disposed on the bang path of this light beam at intervals with this relay lens, also this light beam modulation is become image strip with this light beam that is received from this relay lens ejaculation; And
One projection lens is adjacent to this unfilled corner place of this relay lens, in order to receive the image strip that this optical valve in reflection type reflects and to be projected on this screen.
2. according to the described projection arrangement of claim 1, wherein, this each photomask is zero to the penetrance of visible light.
3. according to the described projection arrangement of claim 1, wherein, this each photomask has different penetrances to the light of different wave length.
4. according to the described projection arrangement of claim 1, wherein, this each photomask has different penetrances to the light of different wave length respectively.
5. according to the described projection arrangement of claim 1, wherein, this each photomask is rectangle or ellipse.
6. according to the described projection arrangement of claim 1, wherein, this each photomask can be divided into two groups, same group photomask bearing of trend arrangement spaced in parallel to each other, and organize the mutual vertical interlaced of bearing of trend of photomask with another.
7. according to the described projection arrangement of claim 1, wherein, this relay lens comprises that also one receives the plane of incidence and the exit facet for this light beam ejaculation of this light beam, and this each photomask is fixed on this plane of incidence.
8. according to the described projection arrangement of claim 1, wherein, this relay lens comprises that also one receives the plane of incidence and the exit facet for this light beam ejaculation of this light beam, and this each photomask is fixed on this exit facet.
9. according to the described projection arrangement of claim 1, wherein, this relay lens is one of them person of biconcave lens, biconvex lens or concave-convex lens.
10. according to the described projection arrangement of claim 1, wherein, this luminescence unit comprises the light source of launching this light beam, and this light source has a plurality of light emitting diodes.
11. a projection arrangement is applicable to an image strip is projeced on the screen, and comprises:
One luminescence unit is launched a light beam;
One catoptron is disposed on the bang path of this light beam, in order to reflection this light beam from this luminescence unit ejaculation, and comprises that one is recessed to form the unfilled corner at the edge;
A plurality of photomasks are fixed in the surface of this catoptron and contiguous this unfilled corner and are distributed in distance;
One optical valve in reflection type is disposed on the bang path of this light beam at intervals with this catoptron, to be received from this light beam that this mirror reflects goes out and this light beam modulation is become image strip; And
One projection lens is adjacent to this unfilled corner place of this catoptron, in order to receive the image strip that this optical valve in reflection type reflects and to be projected on this screen.
12. according to the described projection arrangement of claim 11, wherein, this each photomask is zero to the penetrance of visible light.
13. according to the described projection arrangement of claim 11, wherein, this each photomask has different penetrances to the light of different wave length.
14. according to the described projection arrangement of claim 11, wherein, this each photomask has different penetrances to the light of different wave length respectively.
15. according to the described projection arrangement of claim 11, wherein, this each photomask is rectangle or ellipse.
16. according to the described projection arrangement of claim 11, wherein, this each photomask can be divided into two groups, same group photomask bearing of trend arrangement spaced in parallel to each other, and organize the mutual vertical interlaced of bearing of trend of photomask with another.
17. according to the described projection arrangement of claim 11, wherein, this catoptron is concave mirror or convex mirror.
18. according to the described projection arrangement of claim 11, wherein, this luminescence unit comprises the light source of launching this light beam, and this light source has a plurality of light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100740092A CN100507707C (en) | 2006-04-05 | 2006-04-05 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100740092A CN100507707C (en) | 2006-04-05 | 2006-04-05 | Projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101051172A true CN101051172A (en) | 2007-10-10 |
| CN100507707C CN100507707C (en) | 2009-07-01 |
Family
ID=38782644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100740092A Expired - Fee Related CN100507707C (en) | 2006-04-05 | 2006-04-05 | Projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100507707C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540661A (en) * | 2010-12-28 | 2012-07-04 | 中强光电股份有限公司 | Projection device |
| CN104361840A (en) * | 2014-11-22 | 2015-02-18 | 深圳市思源进科技开发有限公司 | Dual LCD (Liquid Crystal Display) side-positioned reflection display device |
-
2006
- 2006-04-05 CN CNB2006100740092A patent/CN100507707C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540661A (en) * | 2010-12-28 | 2012-07-04 | 中强光电股份有限公司 | Projection device |
| CN102540661B (en) * | 2010-12-28 | 2014-08-06 | 中强光电股份有限公司 | Projection device |
| CN104361840A (en) * | 2014-11-22 | 2015-02-18 | 深圳市思源进科技开发有限公司 | Dual LCD (Liquid Crystal Display) side-positioned reflection display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100507707C (en) | 2009-07-01 |
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Granted publication date: 20090701 Termination date: 20140405 |