CN1768300A - Light mixing member, multiple-lamp lighting equipment and projection video display - Google Patents
Light mixing member, multiple-lamp lighting equipment and projection video display Download PDFInfo
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- CN1768300A CN1768300A CN 200480008632 CN200480008632A CN1768300A CN 1768300 A CN1768300 A CN 1768300A CN 200480008632 CN200480008632 CN 200480008632 CN 200480008632 A CN200480008632 A CN 200480008632A CN 1768300 A CN1768300 A CN 1768300A
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Abstract
Light from a first light source impinges on the reflecting surface (13a) of a reflecting/mixing member (13) and light from a second light source impinges on the reflecting surface (13b). A relation Wp/Wf is not equal to 1 is set between the pitch Wp between parts defined by the reflecting surfaces (13a, 13b) in the reflecting/mixing member (13) (triangular prism parts) and the lens pitch Wf. Since light beams of different distribution impinge on respective lens parts of a fly eye lens (14a), unevenness of luminance can be prevented from occurring in the light incident to a liquid crystal display panel (5) and occurrence of unevenness of color on the screen can also be prevented.
Description
Technical field
The present invention relates to a kind of light mixing member and multiple-lamp lighting and projection-type image display device.
Background technology
In the past, as the device that shows big picture, to be mapped to from the illumination of lighting device on the liquid crystal panel, with image shown in this liquid crystal panel, it is known amplifying the liquid crystal projection apparatus that projects on the screen, and some adopts use a plurality of multiple-lamp lightings that shine (exhibition exceptionally poverty-stricken 2002-296679 communique) this lighting device.As shown in Figure 9, multiple-lamp lighting 50 with the 1st light source 51 and 52 emitted light beams of the 2nd light source, synthesizes by reflection hydrid component 53.Above-mentioned reflection hydrid component 53 as shown in Figure 7, has the 1st mutual reflecting surface 53a and the 2nd reflecting surface 53b.Reflection hydrid component 53 is also referred to as prism array.Relevant multiple-lamp lighting 50 by using a plurality of small light sources, shortens the arc light length of each light source, realize the high efficiency of longevityization and optically focused, simultaneously, even producing light source life to the end, cause stopping under the situation of luminous (lamp is used up), also can proceed projection.
But the light exit side of above-mentioned reflection hydrid component 53 is typically provided with integration lens.Above-mentioned integration lens, constitute by 1 pair of fly's-eye lens (fly eye lens), each convex lens to will from the rayed of light source display panels comprehensively on, be used for and will depend on the part brightness disproportionation equalization of the light of light source institute outgoing, it is poor with the light of periphery to reduce picture central authorities.
But, the light exit side of above-mentioned reflection hydrid component 53 is provided with in the formation of integration lens, as shown in Figure 6, the spacing Wp of the tri-prism portion that the 1st reflecting surface 53a in reflection hydrid component 53 and the 2nd reflecting surface 53b are constituted, with the ratio of the lenticular spacing Wf of light incident side fly's-eye lens 55 in the integration lens for example be 1: 1 o'clock, among each lens section 55a of above-mentioned fly's-eye lens 55 by the light beam of the same figure of incident, the beam condenser of this same figure is in display panels 55, and the light that causes inciding in the liquid crystal panel produces brightness disproportionation.
In addition, light exit side at above-mentioned reflection hydrid component 53 is provided with in the formation of integration lens, as shown in Figure 8, and in the plane of incidence of the light incident side fly's-eye lens 55 of integration lens, at an upper portion thereof the zone with lower area all by identical brightness disproportionation figure, from above-mentioned reflection hydrid component 53 lead-in lights.Therefore, if by each lens in the above-mentioned upper area to importing to the beam pattern in the liquid crystal panel (LCD), be the figure in the frame that is labeled as " first half " among the figure, then by each lens in the above-mentioned lower area to importing to the beam pattern in the liquid crystal panel (LCD), also be identical figure (with reference to " Lower Half " among the figure).Therefore, in liquid crystal panel (LCD), above-mentioned figure is emphasized, causes producing in the project video brightness disproportionation.
Particularly, in using the projector of 3 liquid crystal panels,, and only adopt the different formation of optical path length in 1 look in 3 primary colors, in order optically to allow the optical path length unanimity, and use the array optical system for the miniaturization of color separated synthesis system.Therefore, have only above-mentioned 1 look, inject light to liquid crystal panel, thereby produce differences in luminance profile with other 2 looks with the state that relative other 2 looks reverse up and down.Because the differences in luminance profile in each color projects and produces brightness disproportionation or irregular colour in the project video on the screen.Compare with brightness disproportionation, the easier aware colors inequality of human eye, so this irregular colour causes the display video kind significantly to worsen.
Summary of the invention
The present invention is for addressing the above problem, and purpose is to provide a kind of light mixing member that throws light on and the multiple-lamp lighting and projection-type image display device that can not produce brightness disproportionation and irregular colour.
Relevant multiple-lamp lighting of the present invention, for addressing the above problem, be a kind of the 1st light source and the 2nd light source with light of outgoing almost parallel, will be from the 1st optical element of the emergent light of above-mentioned the 1st light source guiding specific direction, with the light mixing member that will form from the mutual configuration of the 2nd optical element of the emergent light guiding of above-mentioned the 2nd light source direction parallel with above-mentioned specific direction, and the right multiple-lamp lighting of fly's-eye lens that is arranged on the light exit side of above-mentioned light mixing member, it is characterized in that: set the configuration of the 1st optical element and the 2nd optical element, allow each lens section of fly's-eye lens of light incident side of above-mentioned fly's-eye lens centering, by the light beam of the different light distribution of incident.
By adopting above-mentioned formation, because therefore each lens section of fly's-eye lens can not prevented to incide in the light of lighting object thing by the light beam of the same figure of incident, produce brightness disproportionation, can also prevent from simultaneously to produce irregular colour in the video in the screen.
Spacing between the part that the 1st optical element and the 2nd optical element can be constituted with the ratio of the lenticular spacing of above-mentioned fly's-eye lens, is set in 1 ± 0.2 the scope of not being positioned at.In addition, the spacing between the part that the 1st optical element and the 2nd optical element can also be constituted, the ratio with the lenticular spacing of above-mentioned fly's-eye lens is set in the scope that is not positioned at 1/N (N is a natural number).In addition, can also allow and change in the spacing of the part that the 1st optical element and the 2nd optical element constituted.
In addition, projection-type image display device of the present invention, the light of modulating the outgoing of lighting device institute by light valve also throws, and is characterised in that to have above-mentioned any multiple-lamp lighting, as above-mentioned lighting device.
In addition, relative photo hydrid component of the present invention, be a kind ofly to have by will be from the received light of the 1st direction, the 1st optical element of guiding specific direction, with will be from the received light of the 2nd direction, the light mixing member of the shape that the mutual configuration of the 2nd optical element of the direction parallel with above-mentioned specific direction that lead forms, it is characterized in that, with the line perpendicular to the closing line of above-mentioned the 1st optical element and the 2nd optical element is the boundary, at least be divided into two zones, and make the above-mentioned closing line in each zone internally inconsistent.
In the light mixing member of above-mentioned formation, can be by a plurality of optical components of not enough essential light area size, staggering mutually to engage forms; Each optical component has the shape that is formed by the 1st optical element and the mutual configuration of the 2nd optical element; From the incident light of the 1st direction, by the specific direction of the 1st optical element guiding, from the incident light of the 2nd direction, by the 2nd optical element guiding and the above-mentioned specific parallel direction of direction.In addition, can also have above-mentioned formation light mixing member, be arranged on above-mentioned the 1st direction, to the 1st light source of the 1st optical element outgoing illumination light and be arranged on above-mentioned the 2nd direction,, constitute multiple-lamp lighting to the 2nd light source of the 2nd optical element outgoing illumination light
In addition, projection-type image display device of the present invention, the light of modulating the outgoing of lighting device institute by light valve also throws, it is characterized in that, have above-mentioned multiple-lamp lighting, as above-mentioned lighting device, it is right that the light exit side of this multiple-lamp lighting has fly's-eye lens.
Like this light mixing member is carried out in the formation of Region Segmentation, because each regional closing line is internally inconsistent, therefore, in the plane of incidence of fly's-eye lens, for example in upper area and lower area, by different brightness disproportionation figures, from the light mixing member lead-in light.Therefore, by each fly's-eye lens in the above-mentioned upper area to importing to the beam pattern in the light valve, with different to the beam pattern that imports in the light valve by each fly's-eye lens in the above-mentioned lower area, brightness disproportionation is easy to cancel out each other, thereby has alleviated the brightness disproportionation in the project video.
In addition, in the relevant projection-type image display device that constitutes, the picture of the area limit line of above-mentioned light mixing member can be imported to the lens recess in the right light incident side lens group of above-mentioned fly's-eye lens.By like this, can prevent concealed wire as the picture in regional edge boundary line, given light valve by each lens to importing.
Description of drawings
Fig. 1 is the synoptic diagram of the optical system of explanation multiple-lamp lighting of embodiments of the present invention 1 and projection-type image display device.
Fig. 2 is the synoptic diagram of the configuration relation between the compound eye array of reflection hydrid component in the formation of key diagram 1 and light incident side.
Fig. 3 is the simulation curve figure of the variation of the irregular colour of the gap ratio in the relative multiple-lamp lighting of explanation.
Fig. 4 is the figure of explanation embodiments of the present invention 2, (a) for the vertical view of reflection mixing portion, (b) is side view.
Fig. 5 is the brightness figure in the light incident side fly's-eye lens of explanation embodiments of the present invention 2 and the synoptic diagram of the brightness figure in the display panels.
Fig. 6 is the reflection hydrid component of explanation in the past constituting and the synoptic diagram of the configuration relation between the compound eye array of light incident side.
Fig. 7 (a) for the vertical view of reflection mixing portion, (b) is side view for the routine in the past figure of explanation.
Fig. 8 for the explanation in the past the example the light incident side fly's-eye lens in the brightness figure and the synoptic diagram of the brightness figure in the display panels.
Fig. 9 is the synoptic diagram of the multiple-lamp lighting before the explanation.
Embodiment
(embodiment 1)
Contrast Fig. 1 to Fig. 3 describes the multiple-lamp lighting and the projection-type image display device of embodiments of the present invention 1 below.
Fig. 1 is the multiple-lamp lighting of explanation embodiments of the present invention and the summary structural drawing of projection-type image display device.The multiple-lamp lighting of this embodiment and projection-type image display device, to open the formation of being announced in the 2002-296679 communique basic identical with spy illustrated in the background technology.Multiple-lamp lighting 1 has: the 1st light source the 11, the 2nd light source 12, reflection hydrid component 13, integration lens (fly's-eye lens to) 14 and polarisation converting means 15.Projection-type image display device 10 has above-mentioned multiple-lamp lighting 1, collector lens 2,3,4, display panels 5 and projection lens 6.In addition, in the correlogram, for the purpose of simplifying the description, and only shown the optical system of single plate structure, but in so-called three-plate type constitutes, for example added color separation optical system (dichronic mirror etc.) and additive colo(u)r system (cross dichroic prism etc.).
Illuminating part in the above-mentioned light source 11,12 is made of extra-high-pressure mercury vapour lamp, metal halide mercury vapor lamp, xenon lamp etc., and its irradiates light polished object face catoptron roughly becomes directional light and outgoing.Reflection hydrid component 13 for example forms a plurality of tri-prism portion and constitutes in glass baseplate surface, in the inclined-plane in above-mentioned tri-prism portion, evaporation has the metal of high reflectance, with this inclined-plane as the 1st, the 2nd reflecting surface 13a, 13b.
Among Fig. 1, demonstrate allow catoptrical optical axis with the reflection hydrid component 13 normal O consistent.The optical axis of the light beam that above-mentioned light source 11 is emitted becomes given angle [alpha] with above-mentioned normal O.Equally, the optical axis of the emitted light beam of above-mentioned light source 12 becomes given angle [alpha] with above-mentioned normal O.In addition, given angle [alpha] is the angle that is formed on perpendicular in the face of reflecting surface 13a, 13b.Afterwards, adjust the angle (drift angle) on inclined-plane (reflecting surface 13a, 13b) of above-mentioned tri-prism portion and the position of the 1st light source 11 and the 2nd light source 12 (towards), allow the light of 11 outgoing of the 1st light source face 13a that is reflected reflect, reflection is to the direction that is parallel to normal O, the light of 12 outgoing of the 2nd light source face 13b that is reflected reflects, and reflection is to the direction that is parallel to normal O.
Above-mentioned integration lens 14 is provided with above-mentioned reflection hydrid component 13 parallel (relative above-mentioned normal O is vertical).Integration lens 14, as described in the background art, constituted by a pair of fly's- eye lens 14a, 14b, each convex lens are to will be from the light of light source 11,12, shine display panels 5 comprehensively in, allow existing part brightness disproportionation equalization in the light of 11,12 outgoing of light source, the light quantity that reduces between picture central authorities and the periphery is poor.
Polarisation converting means 15 is made of polarisation bundle separation arrays (below be called the PBS array).The PBS array has polarisation diffusion barrier and polarizer (1/2 λ plate).Each polarisation diffusion barrier of PBS array allows for example P polarisation in the light of example integration lens 14 pass through, simultaneously with 90 ° of the light path changes of S polarisation.S polarisation after the light chopper is reflected by adjacent polarisation diffusion barrier, is set at the above-mentioned polarizer of its front side (light exit side), is transformed into P polarisation and outgoing.In addition, seen through the P polarisation former state outgoing of polarisation diffusion barrier.Also promptly, in this case, nearly all light all is transformed into the P polarisation.In the above-mentioned example, the formation that all light is transformed into the P polarisation is illustrated, but also can be by the polarizer position being arranged on the P polarisation outgoing position, and all be transformed into the S polarisation.
The light of 1 outgoing of above-mentioned multiple-lamp lighting arrives display panels 5 through collector lens 2,3,4.Incide the light in this display panels 5, come the receiving light power modulation, become video light, project in the screen that does not show among the figure by projection lens 6 according to the transmittance that sets in each pixel.
Fig. 2 is the synoptic diagram of the configuration relation between the fly's-eye lens 14a of explanation reflection hydrid component 13 and light incident side.The spacing Wp of the tri-prism portion of reflection in the hydrid component 13 (part that is constituted by reflecting surface 13a and reflecting surface 13b), roughly the same with the spacing Wf of fly's-eye lens 14a, but also inequality.
Also promptly, in the formation of the Fig. 6 shown in the background technology, Wp/Wf=1, and among the embodiment shown in Figure 2, Wp/Wf ≠ 1.By like this, relation between spacing Wp and the lenticular spacing Wf is set at, allow in each lens section of fly's-eye lens 14a, by the light beam of incident different distributions, thereby each lens section that can avoid fly's-eye lens 14a is by the light beam of the same image of incident, produces brightness disproportionation thereby can prevent to incide in the light in the display panels 5.
Fig. 3 is for passing through the resulting curve map of simulation, if in the light source 11,12 etc. arc light long be 1.3mm, transverse axis is spacing Wp and the ratio (gap ratio) of lenticular spacing Wf, and the longitudinal axis is the degree (Δ u ' v ') of irregular colour, has shown the variation of irregular colour relative spacing ratio.In this curve map, when Wp/Wf=1, above-mentioned gap ratio is expressed as 100%.In addition, display panels 5 is divided into 9 zones of 3 * 3 in length and breadth, calculate each regional average light quantity, according to representative color coordinate and average light quantity of all kinds, derive each the point in white coordinate (u ', v '), with the maximum above-mentioned Δ u ' of the conduct v ' of distance between (u ', the v ') coordinate between 9 points.In addition, in this curve map, also shown near the Δ u ' v ' (0.0050) in the existing single lamp lighting apparatus that uses 1 light source (arc light length is 1.3mm) here in the lump.Can learn from this curve map, demonstrated the same low irregular colour in the multiple-lamp lighting with above-mentioned existing single lamp lighting apparatus, be to be scope beyond 80～120% at gap ratio, also be the scope beyond Wp/Wf=1 ± 0.2, therefore spacing Wp and Wf will be arranged in the scope in addition of Wp/Wf=1 ± 0.2.
But, the depth of parallelism of the emergent light in the light source 11,12, the arc light that depends on lamp is long.In the long very short desirable light source of arc light, even in the scope beyond Wp/Wf=1 ± 0.2, as Wp/Wf=1/2 or Wp/Wf=1/3, denominator is under the natural situation, also can produce irregular colour.
Therefore, as Wp/Wf ≠ 1/2 or Wp/Wf ≠ 1/3, allow the denominator be that value beyond the natural number is set Wp and Wf.By like this, set the relation of spacing Wp and lenticular spacing Wf, allow in each lens section of fly's-eye lens 14a, the light beam of the different distribution of incident, thereby can avoid in each lens section of fly's-eye lens 14a by the light beam of the same figure of incident, even for example in the very short desirable light source of arc light length, the light that also can prevent to incide in the display panels 5 produces brightness disproportionation, can prevent to produce on screen simultaneously irregular colour.
In addition, can also allow all spacing Wp and not all the same, and allow spacing Wp part different (changing among the spacing Wp).For example, can be per 5 spacings set the place that is spaced apart spacing Wp ' (spacing Wp ' ≠ spacing Wp) of 1 tri-prism portion (part that reflecting surface 13a in the reflection hydrid component 13 and reflecting surface 13b are constituted).In this case, spacing Wp also can be as Wp/Wf=1/2, and denominator is a natural number.Under the situation that adopts such formation, also can set the relation of spacing Wp and lenticular spacing Wf, allow in each lens section of fly's-eye lens 14a, the light beam of the different distribution of incident, thereby can avoid in each lens section of fly's-eye lens 14a by the light beam of the same figure of incident, the light that prevents to incide in the display panels 5 produces brightness disproportionation, can prevent to produce on screen simultaneously irregular colour.
(embodiment 2)
Contrast Fig. 4 and Fig. 5 below describes the light mixing member (reflection hydrid component) of embodiments of the present invention 2 and multiple-lamp lighting and projection-type image display device.In addition, the basic comprising of multiple-lamp lighting and projection-type image display device, the same with embodiment 1, describe so also contrast Fig. 1.
Reflection hydrid component 13 ' shown in the vertical view and side view (b) of Fig. 4 (a), has regional A and area B.Also promptly, be the boundary with line perpendicular to the stupefied line of tri-prism portion, be divided into two regional A, B, two regional A, B stagger mutually with 1/2 distance of the stupefied distance between centers of tracks of tri-prism portion.Like this, each regional A, B, be made of two reflection-type optical members of 1/2 size with essential light area (below, give reflection-type optical member also label symbol A, B), reflection hydrid component 13 ' combines these two reflection-type optical member A, B and constitute.
Reflection-type optical member A, B for example form a plurality of tri-prism portion on glass baseplate surface, in the inclined-plane in above-mentioned tri-prism portion, evaporation has the metal of high reflectance, with this inclined-plane as the 1st, the 2nd reflecting surface 13 ' a, 13 ' b.The angle (drift angle) on the inclined-plane (reflecting surface 13 ' a, 13 ' b) among adjustment reflection-type optical member A, the B and the position of the 1st light source 11 and the 2nd light source 12 (towards), allow the light of 11 outgoing of the 1st light source face 13 ' a that is reflected reflect, reflection is to the direction that is parallel to normal O, the light of 12 outgoing of the 2nd light source face 13 ' b that is reflected reflects, and reflection is to the direction that is parallel to normal O.
In the present embodiment, reflection hydrid component 13 ' as above carries out Region Segmentation, because the stupefied line (closing line) of the tri-prism portion of each regional A, B is internally inconsistent, therefore, in the plane of incidence of light incident side fly's-eye lens 14a, as shown in Figure 5, in upper area and lower area, by different brightness disproportionation figures, from reflection hydrid component 13 ' lead-in light.Therefore, by each fly's-eye lens in the above-mentioned upper area to importing to the beam pattern in the display panels 5, with different to the beam pattern that imports in the display panels 5 by each fly's-eye lens in the above-mentioned lower area, brightness disproportionation is easy to cancel out each other, thereby has alleviated the brightness disproportionation in the project video.
In addition, in the present embodiment, each fly's-eye lens has vertical 10 * horizontal 12 lens units, and the border of upper area and lower area is positioned at the recess of lens unit.Also promptly, will reflect the picture of each regional boundary line of hydrid component 13 ', import in the lens recess in the right light incident side lens group of above-mentioned fly's-eye lens.So, can prevent concealed wire, be directed in the display panels 5 each lens centering as the picture in regional edge boundary line.
In the above-mentioned formation, reflection hydrid component 13 ' engages by these two reflection-type optical member A, B are staggered mutually and forms, and therefore by 1 base material (glass baseplate etc.) is processed, can form regional A, B in this 1 base material.But,, then be easier to make with two articulate formations of reflective optical parts A, B.In addition, be not limited in two zones, can also adopt the above area dividing in 3 zones.Under the situation that adopts 3 zones, 1/3 of the stupefied distance between centers of tracks of the tri-prism portion of can staggering mutually.
In addition, in the foregoing description, use transmittance display panels 5, but also can use the reflective liquid crystal display panel to replace, perhaps, can also replace display panels, and use the optical modulation device of the type that drives micro-reflector respectively.In addition, use reflection hydrid component 13,13 ' among the present invention, two light of the 1st, the 2nd light source 11,12 are mixed, but also can for example use the transparent component that is formed with a plurality of tri-prism portion in the glass baseplate surface, with two light transmission refractions of the 1st, the 2nd light source 11,12, and mix.
As mentioned above,, can carry out can not producing the illumination of brightness disproportionation and irregular colour, play the effect that in projection-type image display device, to carry out high-quality video-projection by the present invention.
Claims (10)
1. a multiple-lamp lighting has: the 1st light source of the light of outgoing almost parallel and the 2nd light source; Will from the 1st optical element of the emergent light of above-mentioned the 1st light source guiding specific direction, with will be from the 2nd optical element of the emergent light guiding of above-mentioned the 2nd light source direction parallel with above-mentioned specific direction, the light mixing member that disposes with interactive mode; And the fly's-eye lens of light exit side that is arranged on above-mentioned light mixing member is right, it is characterized in that:
Set the configuration of the 1st optical element and the 2nd optical element, make each lens section to the fly's-eye lens of the light incident side of above-mentioned fly's-eye lens centering, the light beam of the different light distribution of incident.
2. multiple-lamp lighting as claimed in claim 1 is characterized in that:
Will be with respect to the ratio of the spacing between the part lenticular spacing of above-mentioned fly's-eye lens, that constituted by the 1st optical element and the 2nd optical element, be set in 1 ± 0.2 the scope of not being positioned at.
3. multiple-lamp lighting as claimed in claim 1 is characterized in that:
To be set in the scope that is not positioned at 1/N with respect to the ratio of the spacing of the part lenticular spacing of above-mentioned fly's-eye lens, that be made of the 1st optical element and the 2nd optical element, wherein, N is a natural number.
4. multiple-lamp lighting as claimed in claim 1 is characterized in that:
Change in the spacing of the part that is constituted by the 1st optical element and the 2nd optical element.
5. light mixing member, have by will from the received photoconduction of the 1st direction to the 1st optical element of specific direction, with will it is characterized in that from the received photoconduction of the 2nd direction to the shape that the mutual configuration of the 2nd optical element of the direction parallel with above-mentioned specific direction forms:
With the line perpendicular to the closing line of above-mentioned the 1st optical element and the 2nd optical element is the boundary, is divided into two zones at least, makes the above-mentioned closing line in each zone internally inconsistent.
6. light mixing member as claimed in claim 5 is characterized in that:
Engage by staggering mutually by a plurality of optical components and to form less than the size of the light area of necessity, each optical component has the shape that is formed by the 1st optical element and the mutual configuration of the 2nd optical element, from the incident light of the 1st direction by the specific direction of the 1st optical element guiding, from the incident light of the 2nd direction by the 2nd optical element guiding and the above-mentioned specific parallel direction of direction.
7. multiple-lamp lighting is characterized in that having:
The light mixing member of claim 5 or claim 6, be arranged on above-mentioned the 1st direction and to the 1st light source of the 1st optical element outgoing illumination light and be arranged on above-mentioned the 2nd direction and to the 2nd light source of the 2nd optical element outgoing illumination light.
8. a projection-type image display device for the light by the outgoing of lighting device institute, is modulated projection again by light valve, it is characterized in that:
Has any one multiple-lamp lighting in the claim 1～4, as above-mentioned lighting device.
9. a projection-type image display device for the light by the outgoing of lighting device institute, is modulated projection again by light valve, it is characterized in that:
Multiple-lamp lighting with claim 7 is as above-mentioned lighting device; It is right that the light exit side of this multiple-lamp lighting has fly's-eye lens.
10. projection-type image display device as claimed in claim 9 is characterized in that:
Picture with the area limit line of above-mentioned light mixing member imports to the lens recess in the right light incident side lens group of above-mentioned fly's-eye lens.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003090136 | 2003-03-28 | ||
| JP090136/2003 | 2003-03-28 | ||
| JP324867/2003 | 2003-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1768300A true CN1768300A (en) | 2006-05-03 |
| CN100520559C CN100520559C (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004800086327A Expired - Fee Related CN100520559C (en) | 2003-03-28 | 2004-03-24 | Light mixing member, multiple-lamp lighting equipment and projection video display |
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| CN (1) | CN100520559C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259732A (en) * | 2015-11-18 | 2016-01-20 | 广景视睿科技（深圳）有限公司 | Light beam combining system and projection apparatus therefor |
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2004
- 2004-03-24 CN CNB2004800086327A patent/CN100520559C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259732A (en) * | 2015-11-18 | 2016-01-20 | 广景视睿科技（深圳）有限公司 | Light beam combining system and projection apparatus therefor |
| WO2017084285A1 (en) * | 2015-11-18 | 2017-05-26 | 广景视睿科技（深圳）有限公司 | Light beam combining system and projection apparatus therefor |
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| Publication number | Publication date |
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| CN100520559C (en) | 2009-07-29 |
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