CN204009242U - A kind of device for eliminate laser speckle filtering and projection display system - Google Patents
A kind of device for eliminate laser speckle filtering and projection display system Download PDFInfo
- Publication number
- CN204009242U CN204009242U CN201420182409.5U CN201420182409U CN204009242U CN 204009242 U CN204009242 U CN 204009242U CN 201420182409 U CN201420182409 U CN 201420182409U CN 204009242 U CN204009242 U CN 204009242U
- Authority
- CN
- China
- Prior art keywords
- light source
- filtering
- loading plate
- laser
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model relates to a kind of device and projection display system for eliminate laser speckle filtering simultaneously.This device comprises: combined light source, at least comprises a plurality of ruddiness, green glow and three kinds of LASER Light Source of blue light; Diffusing filter part, be arranged on the travel path of combined light source emergent light, comprise diffusion structure, filter structure and immobilising device, at least three kinds of filtering films that described filter structure comprises substrate and is arranged at substrate surface, in combined light source, the laser of every kind of color is all provided with corresponding with it filtering film on substrate surface, and the thickness of described diffusion structure is along the circumferential change of the central shaft of diffusing filter part; Drive unit, for driving diffusing filter part to rotate around described central shaft, makes each filtering film be arranged alternately the sequential light replacing to produce color on the travel path of combined light source emergent light.By the way, the utility model utilizes drive unit Rotational diffusion filtering part, when eliminating speckle, realizes filtering, compact conformation.
Description
Technical field
The utility model relates to laser display field, particularly relates to a kind of device for eliminate laser speckle filtering and projection display system.
Background technology
The application of LASER Light Source is at present more and more extensive, has become the focus of research and development.LASER Light Source has bright-colored, and colour purity is high, high brightness, and colour gamut is wide, the features such as the life-span is long, and volume is little, but due to laser rays width, coherent length and coherence time are long, utilize LASER Light Source to carry out Projection Display speckle serious, for addressing this problem, still have many difficulties.
The basic reason that laser speckle produces is because laser interference phenomenon makes light-wave energy redistribution, thereby causes that some region is relevant strengthens becoming speck point, and some region coherent subtraction and be blackening point wholely occurs flecky phenomenon on screen.Laser coherence requires two bundle laser frequencies identical, constant phase difference, and direction of vibration is identical.Change frequency and direction of vibration relative difficult, as the chamber length of modulated laser light source makes emergent light frequency shift or adopts polarization spectro to become the mutually perpendicular light of direction of vibration with dissipation spot, this complex structure, controls difficulty large, and therefore destroying is at present concerned with generally sets about from destroying phase differential.
Actual light source generally has certain size and spectral width, and laser coherence can be divided into temporal coherence and spatial coherence according to relevant characteristic.Same light source can produce interference at the light not sending in the same time within coherence time, and light source monochromaticity is better, and the temporal coherence of light source is better, causes speckle effect more obvious.The green laser of the 532nm producing for frequency multiplication, this effect is particularly evident.On the other hand, actual light source has a certain size, can form two times relevant wave sources within the scope of the ripple of synchronization shakes face certain space, and light source is wider, and coherent length is larger, and spatial coherence is better, and speckle effect is more obvious.Prior art is mainly that the spatial coherence of eliminating laser by destroying the phase differential at synchronization different spatial place weakens speckle at present, and as vibration projection screen etc., but this scheme dissipation spot effect is limited, especially for the green laser of narrow linewidth.
For solving the problems of the technologies described above, the utility model proposes a kind of device for eliminate laser speckle filtering and projection display system of simple structure, can eliminate temporal coherence and the spatial coherence of laser simultaneously, realize the sequential output of each coloured light simultaneously, compact conformation, be easy to realize, dissipation spot is effective.
Utility model content
The utility model is mainly and solves the technical matters that existing laser source system exists speckle, and a kind of compact conformation and the effectively device for eliminate laser speckle filtering and the projection display system of eliminate laser speckle are provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is to provide a kind of device for eliminate laser speckle filtering, comprising:
Combined light source, at least comprises a plurality of ruddiness, green glow and three kinds of LASER Light Source of blue light;
Diffusing filter part, be arranged on the travel path of combined light source emergent light, comprise diffusion structure, filter structure and immobilising device, described immobilising device is for being fixed together diffusion structure and filter structure, at least three kinds of filtering films that described filter structure comprises substrate and is arranged at substrate surface, in combined light source, the laser of every kind of color is all provided with corresponding with it filtering film on substrate surface, and the thickness of described diffusion structure is along the circumferential change of the central shaft of diffusing filter part;
Drive unit, for driving diffusing filter part to rotate around described central shaft, makes each filtering film be arranged alternately the sequential light replacing to produce color on the travel path of combined light source emergent light.
Preferably, described combined light source further comprises:
Loading plate, three kinds of LASER Light Source difference parallel arrangements in a row of described at least RGB are on loading plate;
A plurality of catoptrons, described a plurality of catoptrons are arranged on loading plate, for the emergent light of combinations of reflections light source the light spot shape of adjusting combined light source emergent light, are the rectangle that the ratio of adjacent side length is 16:9.
Preferably, described combined light source further comprises:
The first loading plate, the light source difference parallel arrangement in a row of two kinds of colors in three kinds of LASER Light Source of described at least RGB is on the first loading plate;
A plurality of the first catoptrons, described a plurality of the first catoptron is arranged on the first loading plate, the rectangular shape that the ratio that is adjacent side length for reflecting the emergent light of the LASER Light Source arranging on the first loading plate and the light spot shape of the LASER Light Source emergent light on adjustment the first loading plate is 16:9;
The second loading plate, combined light source LASER Light Source included and that be not arranged on the first loading plate is distinguished parallel arrangement in a row on the second loading plate;
A plurality of the second catoptrons, described a plurality of the second catoptron is arranged on the second loading plate, the rectangular shape that the ratio that is adjacent side length for reflecting the emergent light of the LASER Light Source arranging on the second loading plate and the light spot shape of the LASER Light Source emergent light on adjustment the second loading plate is 16:9.
Preferably, described combined light source is LD LASER Light Source;
Described light-source system further comprises:
Control device, described control device is for regulating respectively operating voltage and the electric current of each LASER Light Source.
Preferably, the substrate of described filter structure and diffusion structure form a cylinder, described diffusion structure and filter structure interface are in the bottom surface that is projected as cylinder of cylinder bottom surface, filtering film is arranged on the bottom surface of substrate of filter structure, wherein, the central shaft of diffusing filter part is through the bottom center of cylinder.
Preferably, the substrate of described filter structure and diffusion structure form a circular cone, interface drops in circular cone bottom surface circumference in the projection of circular cone bottom surface, wherein, filtering film is arranged at respectively on the side of substrate of filter structure, the central shaft of diffusing filter part is through the bottom center of circular cone, and the bottom surface that is circular cone, a bottom surface of described diffusion structure.
Preferably, the substrate of described filter structure is a transparent column, and described filtering film is arranged on a bottom surface of cylinder, and diffusion structure is arranged on another bottom surface of cylinder, and wherein, the central shaft of diffusing filter device is through two bottom center of cylinder.
Preferably, described filter structure comprises the first triangular pyramid, described red, green, blue filtering film is arranged at respectively on the not ipsilateral of the first triangular pyramid, described diffusion structure is three terrace with edges, the first triangular pyramid and three terrace with edges form the second triangular pyramid, and the central shaft of diffusing filter part is through the second triangular pyramid two bottom center.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is to provide a kind of projection display system, comprising:
The device for eliminate laser speckle filtering described in above-mentioned any one, also comprises optical wand, relay optics, DMD and projection lens;
Wherein, light passes through successively optical wand, relay optics, DMD and projection lens from the device outgoing for eliminate laser speckle filtering.
The beneficial effects of the utility model are: the situation that is different from prior art, device for eliminate laser speckle filtering of the present utility model and projection display system are realized filtering when eliminating the temporal coherence of laser and spatial coherence, compact conformation, cost is low, workable, be easy to batch production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of the device for eliminate laser speckle filtering of the present utility model;
Fig. 2 is the structural representation of the first preferred embodiment of diffusing filter part in Fig. 1;
Fig. 2 A is the left view of the diffusing filter part shown in Fig. 2;
Fig. 2 B is the vertical view of the diffusing filter part shown in Fig. 2;
Fig. 3 is the structural representation of the second preferred embodiment of diffusing filter part in Fig. 1;
Fig. 4 is the structural representation of the 3rd preferred embodiment of diffusing filter part in Fig. 1;
Fig. 5 is the structural representation of the 4th preferred embodiment of diffusing filter part in Fig. 1.
Fig. 6 is the structural representation of the second embodiment of the device for eliminate laser speckle filtering of the present utility model.
Embodiment
The first technical scheme that the utility model adopts is to provide a kind of device for eliminate laser speckle filtering, refers to Fig. 1, and Fig. 1 is the structural representation of an embodiment of the device for eliminate laser speckle filtering of the present utility model.As shown in Figure 1, the device 10 for eliminate laser speckle filtering of the present embodiment mainly comprises combined light source 11, diffusing filter part 12, drive unit (not shown).
In the present embodiment, combined light source 11 at least comprises a plurality of ruddiness, green glow and three kinds of LASER Light Source of blue light.The color laser of combined light source 11 outgoing incides on condenser lens 13, after focusing on, reenters and is mapped to diffusing filter part 12 through condenser lens 13.Diffusing filter part 12 is arranged on the travel path of combined light source 11 emergent lights.
Wherein, diffusing filter part 12 comprises diffusion structure, filter structure and immobilising device, immobilising device is for being fixed together diffusion structure and filter structure, filter structure comprises substrate and is arranged at least three kinds of filtering films on substrate surface, in combined light source 11, the laser of every kind of color is all provided with corresponding with it filtering film on substrate surface, and the thickness of diffusion structure is along the circumferential change of the central shaft of diffusing filter part 12.
In the present embodiment, drive unit is used for driving diffusing filter part 12 to rotate around central shaft, makes each filtering film be arranged alternately the sequential light replacing to produce color on the travel path of combined light source 11 emergent lights.While rotating under the driving of drive unit due to diffusion structure, the part of diffusion structure different-thickness is arranged alternately the travel path in incident light, and the laser inciding in diffusing filter part 12 becomes through diffusion with after filtering the sequential light that the uniform color of spot intensity replaces.
In a preferred embodiment of the present utility model, for the device 10 of eliminate laser speckle filtering, further comprise loading plate and a plurality of catoptron.Wherein, three kinds of LASER Light Source difference parallel arrangements in a row of at least RGB that combined light source 11 comprises are on loading plate, combined light source 11 shoot lasers are through the reflection of a plurality of catoptrons and to forming the rectangular shape hot spot that the ratio of adjacent side length is 16:9 after the adjustment of light spot shape, and so can being convenient to adjusting, to make image length breadth ratio when finally getting on display screen be also 16:9.Certainly in other embodiment of the present utility model, the ratio of the light spot shape adjacent side length after adjustment is not limited to 16:9, and the utility model does not limit this.
In embodiment preferred embodiment of the present utility model, the LASER Light Source that combined light source 11 comprises is LD LASER Light Source, and described light-source system further comprises control device (not shown).Control device is for regulating respectively the output wavelength of each laser source device of combined light source.By control device, on the fine adjustment of LASER Light Source emergent light wavelength, can further weaken the impact of speckle noise.
Refer to Fig. 2, Fig. 2 is the structural representation of device diffusing filter part the first preferred embodiment for eliminate laser speckle filtering shown in Fig. 1.
As shown in Figure 2, diffusing filter part 121 comprises diffusion structure 1211 and filter structure (not indicating).Wherein, the substrate of filter structure indicates with 1212.Wherein, the substrate 1212 of diffusion structure 1211 and filter structure forms a cylinder, the interface of diffusion structure 1211 and filter structure 1212 is in the bottom surface that is projected as cylinder of cylinder bottom surface, the substrate 1212 that filtering film is arranged on the bottom surface of substrate of filter structure or filtering film is arranged at filter structure is on the surface of diffusion structure 1211, wherein, the central shaft of diffusing filter part 121 is through the bottom center of cylinder.
Refer to Fig. 2 A, Fig. 2 A is the left view of the diffusing filter part shown in Fig. 2.Refer to Fig. 2 B, Fig. 2 B is the vertical view of the diffusing filter part shown in Fig. 2.
In the embodiment of the diffusing filter part 121 shown in Fig. 2, preferred diffusion filtering part comprises three kinds of filtering films of RGB, specifically can be referring to Fig. 2 B.As shown in Figure 2 B, ruddiness filtering film, green glow filtering film and blue light filtering film are three annular shapes of fan on cylinder bottom surface, and these three fan rings have a common central shaft, and this central shaft is the central shaft of diffusing filter part 121.In Fig. 2 B, after the corresponding fan ring of three kinds of filtering films of RGB launches, the large I of corresponding central angle is determined as the case may be, and the utility model does not limit this.
Refer to Fig. 3, Fig. 3 is the structural representation of the second preferred embodiment of the part of the device diffusing filter for eliminate laser speckle filtering shown in Fig. 1.As shown in Figure 3, diffusing filter part 122 comprises diffusion structure 1221 and filter structure (not indicating), and wherein, the substrate of filter structure indicates with 1222.The substrate 1222 of diffusion structure 1221 and filter structure forms a circular cone, and the interface of diffusion structure 1221 and filter structure 1222 drops in circular cone bottom surface circumference in the projection of circular cone bottom surface.
In Fig. 3, filtering film is arranged at respectively on the side of substrate 1222 of filter structure.The central shaft of diffusing filter part 122 is through the bottom center of circular cone, and the bottom surface that is circular cone, a bottom surface of diffusion structure 1221.Wherein, the vertical view of filter structure 1222 is preferably shown in Fig. 2 B.
Refer to Fig. 4, Fig. 4 is the structural representation of the 3rd preferred embodiment of the part of the device diffusing filter for eliminate laser speckle filtering shown in Fig. 1.As shown in Figure 4, diffusing filter part 123 comprises diffusion structure 1231 and filter structure, and wherein the substrate of filter structure indicates with 1232.Wherein, the substrate 1232 of filter structure is transparent column, and filtering film is arranged on a bottom surface of cylinder 1232, and diffusion structure 1231 platings are located on another bottom surface of cylinder 1232.Wherein, the central shaft of diffusing filter part 123 is through two bottom center of cylinder.Diffusion structure 1231 can be also tabular for the rough structure in bottom surface, but the thickness of tabular diffusion structure 1231 circumferentially changing along the central shaft of diffusing filter part 123.
Refer to Fig. 5, Fig. 5 is the structural representation of the 4th preferred embodiment of the part of the device diffusing filter for eliminate laser speckle filtering shown in Fig. 1.As shown in Figure 5, diffusing filter part 124 comprises diffusion structure 1241 and filter structure, and wherein, the substrate of filter structure indicates with 1242.Wherein, the substrate 1242 of filter structure is the first triangular pyramid, and filtering film arranges on three sides of the first triangular pyramid, and diffusion structure 1241 is three terrace with edges, and the first triangular pyramid and three terrace with edges form the second triangular pyramid, the central shaft of diffusing filter part 124 is through the bottom center of the second triangular pyramid.First incident light incides the surface of filter structure, via reentering after filtering membrane filtration ripple, is mapped on diffusion structure 1241.
Certainly in Fig. 3, the substrate 1222 of diffusion structure 1221 and filter structure forms a round platform.In Fig. 5, the substrate 1242 of filter structure is can be also three terrace with edges.According to thinking of the present utility model, slightly do to change and just can realize the purpose of this utility model diffusing filter device still within protection domain of the present utility model, this is not restricted.
Refer to Fig. 6, Fig. 6 is the structural representation of the second embodiment of the device for eliminate laser speckle filtering of the present utility model.As shown in Figure 6, the device 20 for eliminate laser speckle filtering of the present embodiment mainly comprises combined light source (do not indicate, comprise the first light source group 21 and secondary light source group 22), diffusing filter part 23, drive unit (not shown).Combined light source further comprises:
The first loading plate, at least first group of light source, the 21 difference parallel arrangement in a row of two kinds of colors in three kinds of LASER Light Source of RGB is on the first loading plate;
A plurality of the first catoptrons, are arranged on the first loading plate, the rectangular shape that the ratio that is adjacent side length for reflecting the emergent light of the LASER Light Source arranging on the first loading plate and the light spot shape of the LASER Light Source emergent light on adjustment the first loading plate is 16:9;
The second loading plate, combined light source second group of LASER Light Source 22 included and that be not arranged on the first loading plate distinguished parallel arrangement in a row on the second loading plate;
A plurality of the second catoptrons, described a plurality of the second catoptron is arranged on the second loading plate, the rectangular shape that the ratio that is adjacent side length for reflecting the emergent light of the LASER Light Source arranging on the second loading plate and the light spot shape of the LASER Light Source emergent light on adjustment the second loading plate is 16:9.
In the present embodiment, preferably, combined light source comprises three kinds of LASER Light Source of RGB, the first combined light source 21 is the combination of any two kinds of color LASER Light Source in three kinds of LASER Light Source of RGB, therefore in the present embodiment, diffusing filter part 23 has gone out the emergent light of combined light source has been spread and filtering, also to being arranged at the emergent light of the LASER Light Source on the first loading plate and the second loading plate, carry out light path merging, effective sequential light is propagated towards same direction after 23 outgoing of diffusing filter part.
In the present embodiment, condenser lens is not limited to 24 shown in figure, 25 and 26, can increase as required or reduce the number of condenser lens, and the utility model is not restricted this.
Further, because the emergent light of first group of included LASER Light Source 21 of 23 pairs of combined light sources of diffusing filter part and second group of LASER Light Source 22 carries out light path, to merge the diffusing filter part 23 making in the present embodiment different with the structure of the first embodiment 10 diffusing filter parts 12 of the device for eliminate laser speckle filtering of the present utility model, main difference part is, filtering film adopts dichroic filtering film, to first group of light transmissive must reflection the emergent light of second group of LASER Light Source 22 of LASER Light Source 21 outgoing, correspondingly, thereby dichroic filtering film is to realizing the light path of two-way light is merged the emergent light reflection of second group of LASER Light Source 22 21 reflections of first group of LASER Light Source.
The second technical scheme of the present utility model is to provide a kind of projection display system for eliminate laser speckle filtering.The projection display system of the technical program comprises the device for eliminate laser speckle filtering described in above-mentioned any one, also comprise optical wand, relay optics, DMD and projection lens, wherein, light passes through successively optical wand, relay optics, DMD and projection lens from the device outgoing for eliminate laser speckle filtering.
In two kinds of technical schemes of the present utility model, diffusing filter part itself has the effect of dissipation spot to laser, what is more important: (1) is because the circumferential thickness of this diffusion structure along the central shaft of diffusing filter part changes, cause emergent light phase place different, thereby make light beam by this diffusion structure the coherence of synchronization diverse location a little less than, be also that spatial coherence weakens; (2), when drive unit drives this diffusion structure rotation, light is not different by the light path after diffusion structure yet in the same time for same position, cause emergent light phase place different, so temporal coherence is also weakened.
By the way, the device for eliminate laser speckle filtering and projection display system that the utility model provides are realized filtering in eliminate laser speckle, compact conformation, and dissipation spot is effective, and cost is low, workable, is easy to batch production.Further adopt tunable LD LASER Light Source can realize the adjusting of laser output wavelength, so can further weaken laser speckle noise.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. for a device for eliminate laser speckle filtering, it is characterized in that, described device comprises:
Combined light source, at least comprises a plurality of ruddiness, green glow and three kinds of LASER Light Source of blue light;
Diffusing filter part, be arranged on the travel path of combined light source emergent light, comprise diffusion structure, filter structure and immobilising device, described immobilising device is for being fixed together diffusion structure and filter structure, at least three kinds of filtering films that described filter structure comprises substrate and is arranged at substrate surface, in combined light source, the laser of every kind of color is all provided with corresponding with it filtering film on substrate surface, and the thickness of described diffusion structure is along the circumferential change of the central shaft of diffusing filter part;
Drive unit, for driving diffusing filter part to rotate around described central shaft, makes each filtering film be arranged alternately the sequential light replacing to produce color on the travel path of combined light source emergent light.
2. the device for eliminate laser speckle filtering according to claim 1, is characterized in that, described combined light source further comprises:
Loading plate, three kinds of LASER Light Source difference parallel arrangements in a row of described at least RGB are on loading plate;
A plurality of catoptrons, described a plurality of catoptrons are arranged on loading plate, for the emergent light of combinations of reflections light source the light spot shape of adjusting combined light source emergent light, are the rectangle that the ratio of adjacent side length is 16:9.
3. the device for eliminate laser speckle filtering according to claim 1, is characterized in that, described combined light source further comprises:
The first loading plate, the light source difference parallel arrangement in a row of two kinds of colors in three kinds of LASER Light Source of described at least RGB is on the first loading plate;
A plurality of the first catoptrons, described a plurality of the first catoptron is arranged on the first loading plate, the rectangular shape that the ratio that is adjacent side length for reflecting the emergent light of the LASER Light Source arranging on the first loading plate and the light spot shape of the LASER Light Source emergent light on adjustment the first loading plate is 16:9;
The second loading plate, combined light source LASER Light Source included and that be not arranged on the first loading plate is distinguished parallel arrangement in a row on the second loading plate;
A plurality of the second catoptrons, described a plurality of the second catoptron is arranged on the second loading plate, the rectangular shape that the ratio that is adjacent side length for reflecting the emergent light of the LASER Light Source arranging on the second loading plate and the light spot shape of the LASER Light Source emergent light on adjustment the second loading plate is 16:9.
4. the device for eliminate laser speckle filtering according to claim 1, is characterized in that, described combined light source is LD LASER Light Source;
Described light-source system further comprises:
Control device, described control device is for regulating respectively operating voltage and the electric current of each LASER Light Source.
5. the device for eliminate laser speckle filtering according to claim 1, it is characterized in that, the substrate of described filter structure and diffusion structure form a cylinder, described diffusion structure and filter structure interface are in the bottom surface that is projected as cylinder of cylinder bottom surface, filtering film is arranged on the bottom surface of substrate of filter structure, wherein, the central shaft of diffusing filter part is through the bottom center of cylinder.
6. the device for eliminate laser speckle filtering according to claim 1, it is characterized in that, the substrate of described filter structure and diffusion structure form a circular cone, interface drops in circular cone bottom surface circumference in the projection of circular cone bottom surface, wherein, filtering film is arranged at respectively on the side of substrate of filter structure, and the central shaft of diffusing filter part is through the bottom center of circular cone, and the bottom surface that is circular cone, a bottom surface of described diffusion structure.
7. the device for eliminate laser speckle filtering according to claim 1, it is characterized in that, the substrate of described filter structure is a transparent column, described filtering film is arranged on a bottom surface of cylinder, diffusion structure is arranged on another bottom surface of cylinder, wherein, the central shaft of diffusing filter device is through two bottom center of cylinder.
8. the device for eliminate laser speckle filtering according to claim 1, it is characterized in that, described filter structure comprises the first triangular pyramid, described red, green, blue filtering film is arranged at respectively on the not ipsilateral of the first triangular pyramid, described diffusion structure is three terrace with edges, the first triangular pyramid and three terrace with edges form the second triangular pyramid, and the central shaft of diffusing filter part is through the second triangular pyramid two bottom center.
9. the projection display system for eliminate laser speckle filtering, it is characterized in that, described projection display system comprises the device for eliminate laser speckle filtering described in claim 1-8 any one, also comprises optical wand, relay optics, DMD and projection lens;
Wherein, light passes through successively optical wand, relay optics, DMD and projection lens from the device outgoing for eliminate laser speckle filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182409.5U CN204009242U (en) | 2014-04-15 | 2014-04-15 | A kind of device for eliminate laser speckle filtering and projection display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182409.5U CN204009242U (en) | 2014-04-15 | 2014-04-15 | A kind of device for eliminate laser speckle filtering and projection display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009242U true CN204009242U (en) | 2014-12-10 |
Family
ID=52049218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420182409.5U Withdrawn - After Issue CN204009242U (en) | 2014-04-15 | 2014-04-15 | A kind of device for eliminate laser speckle filtering and projection display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204009242U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093558A (en) * | 2014-04-15 | 2015-11-25 | 深圳市亿思达科技集团有限公司 | Device and projection display system used for eliminating laser speckles and filtering waves |
| CN105093795A (en) * | 2015-06-03 | 2015-11-25 | 海信集团有限公司 | Double-color laser light source |
| CN105116675A (en) * | 2015-06-03 | 2015-12-02 | 海信集团有限公司 | Laser source and projection display device |
| CN106569379A (en) * | 2015-10-08 | 2017-04-19 | 海信集团有限公司 | Laser speckle-removing optical path, double-color laser light source, and three-color laser light source |
| US11867930B2 (en) | 2020-07-30 | 2024-01-09 | Coretronic Corporation | Filter module and projection apparatus |
-
2014
- 2014-04-15 CN CN201420182409.5U patent/CN204009242U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093558A (en) * | 2014-04-15 | 2015-11-25 | 深圳市亿思达科技集团有限公司 | Device and projection display system used for eliminating laser speckles and filtering waves |
| CN105093795A (en) * | 2015-06-03 | 2015-11-25 | 海信集团有限公司 | Double-color laser light source |
| CN105116675A (en) * | 2015-06-03 | 2015-12-02 | 海信集团有限公司 | Laser source and projection display device |
| US10197901B2 (en) | 2015-06-03 | 2019-02-05 | Hisense Co., Ltd. | Dual-color laser light source |
| US10451960B2 (en) | 2015-06-03 | 2019-10-22 | Hisense Co., Ltd. | Laser light source and projection display device |
| US10459326B2 (en) | 2015-06-03 | 2019-10-29 | Hisense Co., Ltd. | Dual-color projector |
| CN106569379A (en) * | 2015-10-08 | 2017-04-19 | 海信集团有限公司 | Laser speckle-removing optical path, double-color laser light source, and three-color laser light source |
| US11867930B2 (en) | 2020-07-30 | 2024-01-09 | Coretronic Corporation | Filter module and projection apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110161791B (en) | Illumination system and projection device | |
| CN204009242U (en) | A kind of device for eliminate laser speckle filtering and projection display system | |
| US10134317B2 (en) | Projection device, projection control system, and projection control method | |
| US20180173087A1 (en) | Illumination system, projection apparatus and method for driving illumination system | |
| US9164274B2 (en) | Wavelength conversion wheel module and illumination system | |
| CN108255006B (en) | Diffusion sheet | |
| EP2778741B1 (en) | Multi-colour illumination apparatus | |
| CN103890640B (en) | Grenade instrumentation | |
| JP4091632B2 (en) | Projection display optical system and projector including the projection display optical system | |
| CN203745789U (en) | Light source system | |
| CN104765240A (en) | Dual laser light source system | |
| CN104765239A (en) | Light source system | |
| WO2018068471A1 (en) | Laser light source device | |
| CN204178055U (en) | Light splitting Multiplexing apparatus and projection display system | |
| CN104516182A (en) | Lighting system, projector and back projection system | |
| JP2015184407A (en) | Illumination device and image display device | |
| CN104834170A (en) | Projector | |
| WO2020028499A1 (en) | Display with increased pixel count | |
| US11467479B2 (en) | Polarizing rotation device and projection device | |
| JP2014191304A (en) | Illumination apparatus and projector | |
| CN105093558A (en) | Device and projection display system used for eliminating laser speckles and filtering waves | |
| CN111208696A (en) | Composite phase conversion element and projection device | |
| CN114185233A (en) | 2LCD projection method and projection device | |
| TW201339641A (en) | Optical module for use in a projector apparatus and projector apparatus | |
| WO2021184923A1 (en) | Laser projection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN YISIDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: SHENZHEN ESTA DISPLAY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee after: SHENZHEN ESTAR DISPLAYTECH CO., LTD. Address before: 518000, District, Shenzhen, Nanshan District high tech Zone, Southern District, B1 digital technology park, building 2, C Patentee before: Shenzhen Esta Display Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171011 Address after: 11 No. 364300 Longyan city in Fujian province Wuping County Industrial Park Industrial Avenue Patentee after: Fujian science and Technology Co., Inc Address before: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee before: SHENZHEN ESTAR DISPLAYTECH CO., LTD. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20181102 |