CN105093559B - Decoherence device - Google Patents
Decoherence device Download PDFInfo
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- CN105093559B CN105093559B CN201410205988.5A CN201410205988A CN105093559B CN 105093559 B CN105093559 B CN 105093559B CN 201410205988 A CN201410205988 A CN 201410205988A CN 105093559 B CN105093559 B CN 105093559B
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- liquid
- storage container
- liquid storage
- eliminating coherence
- light
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- 239000007788 liquid Substances 0.000 claims abstract description 130
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 239000002918 waste heat Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 29
- 239000004065 semiconductor Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000813 microbial effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000002335 preservative effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract 2
- 230000008859 change Effects 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000013589 supplement Substances 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- RTKIYNMVFMVABJ-UHFFFAOYSA-L thimerosal Chemical compound [Na+].CC[Hg]SC1=CC=CC=C1C([O-])=O RTKIYNMVFMVABJ-UHFFFAOYSA-L 0.000 description 1
- 229940033663 thimerosal Drugs 0.000 description 1
Landscapes
- Lasers (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a decoherence device which comprises a liquid storage container with light-transmitting plates on the front wall and the rear wall, a heating plate and a heat dissipation plate. The heating plate heats local liquid in the liquid storage container by utilizing waste heat generated by the operation of the laser, and the heat dissipation plate cools other parts of the liquid storage container, so that temperature difference is formed in the container. After the laser penetrates through the liquid which flows circularly but has uneven temperature, the phase changes randomly, so that the decoherence effect is achieved.
Description
Technical field
The present invention relates to technical field of laser display, a kind of eliminating coherence device is more particularly to.
Background technology
Laser display has the advantages that colour gamut covers wide, high color saturation, double high definitions, high brightness, is increasingly becoming next
For Display Technique trend.The principle of laser display is：Red, green, blue tricolor laser is respectively through shaping, shimming, eliminating coherence, tune
Image is shown on screen by the processes such as system, projection.Because laser has high coherence, if directly projecting a laser onto screen
Obvious speckle can be produced on curtain, image quality is influenceed.Therefore laser has to pass through eliminating coherence processing just to can apply to laser aobvious
Show.The eliminating coherence method often used at present has vibrations screen, vibrations optical mirror slip, rotating wave plate etc., rotation diffusing reflection plate etc., but
It is that the design of these methods realizes complex, cost is higher, is unsatisfactory for practical requirement.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is the process for how simplifying eliminating coherence, reduces cost, improves eliminating coherence effect.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of eliminating coherence device, the eliminating coherence device includes storage
Liquid container, heating plate, heat sink；The liquid storage container includes cavity, preceding light-passing board and rear light-passing board；
The liquid storage container is equipped with the working media of transparent liquid, and the working media of the transparent liquid is operated in liquid
State；The heating plate is located at the cavity bottom or side；The heat sink is located at the cavity top or side.
Transparent operation medium in liquid storage container can be water, ethanol, methanol, carbon tetrachloride etc. but be not limited to the liquid of citing
The suspension or emulsion of the mixture and addition other materials of body or several transparency liquids.In liquid storage container
Working media can produce convection action, i.e. hot part when there is temperature difference can rise, and cold part can decline, so that liquid
Internal heat is exchanged.On the one hand the refractive index of liquid and the density of liquid are relevant, on the other hand refractive index is with temperature
Change can also change.The temperature refraction rate coefficient of such as ethanol is 4 × 10-4, i.e. ethanol temperature often changes 1 DEG C, the folding of ethanol
Penetrate rate change 4 × 10-4.Assuming that the thickness of ethanol is 1cm, then the optical path difference produced by 1 DEG C of temperature change changes equivalent to three
6 times of red light wavelength most long in primary colours.So the small temperature change of liquid internal can just make by laser phase therein
Position produces considerable change.The used heat produced using laser is heated to container localized liquid, is carried out at other positions of container
Radiating, so that producing temperature difference in container, transparency liquid therein produces directed flow due to convection action, then with not
Synthermal liquid will constantly be mixed in container.Because this process has a certain position temperature in randomness, container
It will change in certain scope, laser can also produce random change by phase after liquid, the phase of light field is disturbed,
The coherence of the laser by liquid can be thus reduced or eliminated.
Preferably, light field homogenizer is increased before the preceding light-passing board；Increase light field behind the rear light-passing board
Homogenizer.
Preferably, overall transmitance of the working media of the transparent liquid in visible light wave range is more than 80%, and adds
Adding preservative agent prevents microbial growth.
Preferably, the material of the heating plate and the heat sink is high thermal conductivity material.
Preferably, the heat sink is at least 1, is set by semiconductor chilling plate or high thermal conductivity material with external cooling
Standby connection；The heating plate is at least 1, passes through semiconductor chilling plate or high thermal conductivity material and laser waste heat source or outside
Firing equipment is connected.
Preferably, the liquid storage container is sealing structure, and the material of the cavity is low thermal conductivity material or heat-insulating material.
Preferably, the preceding light-passing board and the rear light-passing board material are to the overall transmitance in visible light wave range
Transparent material more than 80%, and it is coated with anti-reflection film or diaphragm.
Preferably, the eliminating coherence device also includes return, and the return constitutes one with the liquid storage container
The circulation loop of individual closing, the working media of the transparent liquid directed flow in circulation loop.
Preferably, the return material is low thermal conductivity material or heat-insulating material.
Preferably, the return also includes Miniature liquid pump, pair of the working media for strengthening the transparent liquid
Stream.
(3) beneficial effect
The invention provides a kind of eliminating coherence device, the device is produced by liquid in liquid storage container due to temperature difference
The eliminating coherence of laser is realized in convection current, can partially or completely eliminate the relevant effect of laser, and the design of the present invention and
Realize simply, it is practical.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of eliminating coherence device of the preferred embodiment of the present invention；
Fig. 2 is a kind of structural representation of eliminating coherence device of another preferred embodiment of the present invention；
Fig. 3 is a kind of structural representation of eliminating coherence device of another preferred embodiment of the present invention；
Fig. 4 is a kind of structural representation of eliminating coherence device of another preferred embodiment of the present invention.
Marginal data：
1st, cavity；2nd, heating plate；3rd, heat sink；4th, light-passing board；5th, light-passing board；6th, return；7th, semiconductor laser；
8th, lenticule；9th, Miniature liquid pump.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.Following examples are used to illustrate this hair
It is bright, but can not be used for limiting the scope of the present invention.
A kind of eliminating coherence device of the present invention includes a liquid storage container, and it is internal full of transparent operation medium.
Liquid storage container includes cavity, preceding light-passing board, rear light-passing board；Cavity is made by low thermal conductivity material, and light-passing board is by saturating
Luminescent material such as optical glass is made, for transmission laser；Preceding light-passing board and rear light-passing board can plate anti-reflection film or according to
The other diaphragms of liquid property plating, can be fabricated to the lens with certain function；Can be with before the preceding light-passing board
Increase light field homogenizer；It can increase light field homogenizer behind the rear light-passing board.Not on the cavity of liquid storage container
The place addition projection of light path is influenceed, particle etc. strengthens the randomness of liquid flowing.The main function of liquid storage container is made in it
The convection action formation directed flow that the transparent operation medium in portion is produced by the temperature difference in container is so that through therein
Laser phase changes at random.
The eliminating coherence device of the present invention also includes heating plate, and the heating plate can be as one of liquid storage container wall
Point, it can also be connected as an independent structure by pipeline with liquid storage container, for adding to localized liquid in liquid storage container
Heat, can directly utilize the used heat of laser, can also use external heat equipment；The heating plate is located at liquid storage container cavity
Bottom or side, be connected with laser waste heat source or external heat equipment, at least 1 piece.
The eliminating coherence device of the present invention also includes heat sink, and the heat sink can be as one of liquid storage container wall
Point, it can also be connected as an independent structure by pipeline with liquid storage container, for being radiated to the localized liquid in container,
External radiating device can be fan, TEC cooling pieces etc.；The heat sink is located at the top or side of liquid storage container cavity, with
Outside heat sinks are connected, at least 1 piece.
A kind of eliminating coherence device of the present invention can increase return, and return and liquid storage container constitute a closing
Circulation loop, transparency liquid qualitative flowing in circulation loop can set one or more miniature in the return
Liquid pump strengthens convection current.
A kind of eliminating coherence device of the present invention makes return, liquid storage container except saturating using lower thermal conductivity or heat-insulating material
Tabula rasa, heating plate, the wall outside heat sink.
Fig. 1 is a kind of structural representation of eliminating coherence device of the preferred embodiment of the present invention；The one of the present embodiment
Planting eliminating coherence device includes：Liquid storage container, heating plate 2, heat sink 3；The liquid storage container include cavity 1, preceding light-passing board 4 and
Light-passing board 5 afterwards.Wherein the material of heating plate 2 is red copper, and its thermal source can be that the used heat that laser is produced can also be outside add
Hot equipment.The passage of heat that heating plate 2 is formed by red copper is connected with laser waste heat source.The material of heat sink 3 is red copper, passes through purple
The passage of heat of copper formation is connected with outside heat sinks.Preceding light-passing board 4 and rear light-passing board 5 are placed in parallel, its material optics
Glass is made, and size is 50mm × 50mm, can be that the lens with certain function can also be made according to specific needs for plane,
In order to increase the transmitance of light-passing board, its surface can plate anti-reflection film.The distance between two light-passing boards can be according to specifically making
Adjusted with situation.Other cavitys of the liquid storage container in addition to preceding light-passing board 4, rear light-passing board 5, heating plate 2, heat sink 3 use poly-
Tetrafluoroethene material is made, to reduce loss of the heat on wall.Liquid storage container is closed structure, can use sealing ring,
The encapsulants such as silicon rubber, glass cement, raw material band are in heating plate 2, heat sink 3, preceding light-passing board 4 and rear light-passing board 5 and container
Other parts are tightly connected.Transparency liquid in liquid storage container uses pure water, and adds thimerosal and prevent microbial growth.
When laser works, the passage of heat that its used heat produced is formed by red copper reaches heating plate 2.So for swash
Light device can also heat heating plate 2 while radiating.Heating plate 2 is inhaled on the bottom cavity or side cavity of liquid storage container
Temperature after the heat from laser has been received to rise while heating the liquid of liquid storage container bottom.The liquid of liquid storage container bottom
Because temperature rises the upper flow to container.On the top of liquid storage container, heat sink 3 cools down the temperature of liquid, so as to protect
Hold poor with container bottom stationary temperature.Container bottom can be by container inner circumferential due to liquid reduction caused by the rising compared with hot liquid
The liquid supplement enclosed, so as to form circulating for " middle rising-surrounding declining ".Cold and hot liquids are not so in liquid storage container
Disconnected mixing, the fluid temperature of a certain position changes at random within the specific limits, and laser is passing through liquid of the light-passing board through flowing
Shi Xiangwei will change at random, reach the purpose that relevant effect is reduced or eliminated.
Heating plate and heat sink can as liquid storage container a part, can also be made in the case of not allowing in space
Independent structure is connected by pipeline.
Fig. 2 is a kind of structural representation of eliminating coherence device of another preferred embodiment of the present invention.With shown in Fig. 1
Embodiment is compared, and embodiment adds return 6, is made up of engineering plastic materials, and outside is surrounded by insulating materials such as plastics
Foamed material, transparency liquid selects ethanol, the directed flow in the circulation loop that liquid storage container and return are constituted.Preceding printing opacity
Plate 4 and rear light-passing board 5 are made of quartz glass, and size is 50mm × 50mm.Lead between heating plate 2 and laser waste heat source
Semiconductor chilling plate (TEC) connection is crossed, is connected between heat sink 3 and outside heat sinks also by TEC.
Embodiment
In the present embodiment, the return 6 of the upper and lower part of cavity 1 of a connection liquid storage container is added.Heating
The used heat that plate 2 is produced from laser absorbs the bottom that heat heats liquid storage container by TEC, in the upper chamber of liquid storage container
Heat sink 3 carries out cooling to keep stationary temperature above and below liquid storage container poor by TEC to upper liquid.Due to convection action
Rise after the rise of heated liquid temperature, the liquid supplement in traction pipeline, so that transparency liquid is in liquid storage container and loop pipe
Directed flow in the circulation loop that road 6 is constituted.So cold and hot liquids are constantly mixed in liquid storage container, the liquid temperature of a certain position
Degree random change within the specific limits, laser phase when by light-passing board through the liquid flowed will change at random, reach
The purpose of coherence is reduced or eliminated.
Fig. 3 is a kind of structural representation of eliminating coherence device of another preferred embodiment of the present invention.With reality shown in Fig. 2
Example is applied to compare, the heating plate 2 in the present embodiment and semiconductor laser (bar bars) 7 it is heat sink be combined into together with, i.e., it is saturating in pipeline
Prescribed liquid flows through the heat sink of bar bars 7；Transparent liquid working media selects methanol；Preceding light-passing board 4 and rear light-passing board 5 are using fluorination
Calcium material, surface is coated with visible light wave range broadband anti-reflection film.When bar bars 7 work, its heat produced is by heat sink namely heating
Plate 2 is absorbed, and the transparency liquid in pipeline is heated；And the heat sink 3 of the upper chamber in liquid storage container is dissipated by TEC
Heat, so as to keep stationary temperature above and below liquid storage container poor, because the heated liquid temperature of convection action duct bottom raises meeting
To the relatively low liquid storage container upper flow of temperature, the liquid supplement in traction pipeline so that transparency liquid in liquid storage container and
Directed flow in the circulation loop that return 6 is constituted.So cold and hot liquids are constantly mixed in liquid storage container, the liquid of a certain position
Temperature changes at random within the specific limits, and laser phase when by light-passing board through the liquid flowed will change at random,
Reach the purpose that coherence is reduced or eliminated.
Fig. 4 is a kind of structural representation of eliminating coherence device of another preferred embodiment of the present invention.With reality shown in Fig. 3
Apply example to compare, the present embodiment is before preceding light-passing board 4, and rear light-passing board 5 adds the light field homogenizer of lenticule 8 below, returning
Miniature liquid pump 9 is added in the pipeline of road to strengthen convection current；Transparent liquid working media selects carbon tetrachloride；Preceding light-passing board 4 is with after
Light-passing board 5 uses K9 glass materials, and surface is coated with diaphragm.When bar bars 7 work, its produce heat by it is heat sink namely add
Hot plate 2 is absorbed, and the transparency liquid in pipeline is heated；And the heat sink 3 of the upper chamber in liquid storage container is carried out by TEC
Radiating, so as to keep stationary temperature above and below liquid storage container poor, because the heated liquid temperature of convection action duct bottom is raised
Can be to the relatively low liquid storage container upper flow of temperature, the liquid supplement in traction pipeline, while Miniature liquid pump 9 with transparency liquid
Flow direction identical direction carries out pumping, so that the circulation loop that transparency liquid is constituted in liquid storage container and return 6
In directed flow.So cold and hot liquids are constantly mixed in liquid storage container, the fluid temperature of a certain position within the specific limits with
Machine changes, and laser phase when by light-passing board through the liquid flowed will change at random, reaches and coherence is reduced or eliminated
Purpose.Lenticule 8 is played to the homogenized effect of light field, and so device can not only play the work for eliminating laser coherence
With, moreover it is possible to while homogenizing light field, make whole laser display system more compact.
When the used heat that laser is produced is inadequate, extra external heat equipment can also be increased heating plate 2 is added
Heat.In order to strengthen eliminating coherence effect, the place of light path can not be influenceed to make projection pockety in liquid storage container inwall
Or burr strengthens the randomness of liquid distribution.
In four above-mentioned embodiments, although be only to be provided with a heating plate and a heat sink, but in reality
Multiple heating plates and heat sink can arranged according to actual conditions and using effect completely in use, wherein heating plate is located at chamber
The bottom or side of body or return, heat sink are located at the top or side of cavity or return.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although with reference to embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that, to technical scheme carry out it is various combination,
Modification or equivalent substitution, without departure from the spirit and scope of technical solution of the present invention, the right that all should cover in the present invention is wanted
Ask among scope.
Claims (10)
1. a kind of eliminating coherence device, it is characterised in that the eliminating coherence device includes liquid storage container, heating plate, heat sink；It is described
Liquid storage container includes cavity, preceding light-passing board and rear light-passing board；
The liquid storage container is equipped with the working media of transparent liquid, and the working media of the transparent liquid is operated in liquid condition；
The heating plate is located at the cavity bottom or side；The heat sink is located at the cavity top or side.
2. eliminating coherence device according to claim 1, it is characterised in that increase light field before the preceding light-passing board and homogenize
Device；Increase light field homogenizer behind the rear light-passing board.
3. eliminating coherence device according to claim 1, it is characterised in that the working media of the transparent liquid is in visible ray
Overall transmitance in wave band is more than 80%, and adds preservative and prevent microbial growth.
4. eliminating coherence device according to claim 1, it is characterised in that the material of the heating plate and the heat sink is equal
For high thermal conductivity material.
5. eliminating coherence device according to claim 1, it is characterised in that the heat sink is at least 1, passes through semiconductor
Cooling piece or high thermal conductivity material are connected with outside heat sinks；The heating plate is at least 1, by semiconductor chilling plate or
High thermal conductivity material is connected with laser waste heat source or external heat equipment.
6. eliminating coherence device according to claim 1, it is characterised in that the liquid storage container is sealing structure, the chamber
The material of body is low thermal conductivity material or heat-insulating material.
7. eliminating coherence device according to claim 1, it is characterised in that the preceding light-passing board and the rear transparent board
Material is the transparent material more than 80% to the overall transmitance in visible light wave range, and is coated with anti-reflection film or diaphragm.
8. eliminating coherence device according to claim 1, it is characterised in that the eliminating coherence device also includes return,
The return constitutes the circulation loop of a closing with the liquid storage container, and the working media of the transparent liquid is in circulation
Directed flow in loop.
9. eliminating coherence device according to claim 8, it is characterised in that the return material is low thermal conductivity material
Or heat-insulating material.
10. eliminating coherence device according to claim 8, it is characterised in that the return also includes Miniature liquid pump, is used
In the convection current for the working media for strengthening the transparent liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205988.5A CN105093559B (en) | 2014-05-15 | 2014-05-15 | Decoherence device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205988.5A CN105093559B (en) | 2014-05-15 | 2014-05-15 | Decoherence device |
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| CN105093559A CN105093559A (en) | 2015-11-25 |
| CN105093559B true CN105093559B (en) | 2017-07-28 |
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| CN201410205988.5A Active CN105093559B (en) | 2014-05-15 | 2014-05-15 | Decoherence device |
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| CN112631055A (en) * | 2020-12-25 | 2021-04-09 | 四川长虹电器股份有限公司 | Solid-liquid dual-state speckle eliminating device and laser projection light source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1879057A (en) * | 2004-04-09 | 2006-12-13 | 松下电器产业株式会社 | Laser image display |
| CN201133971Y (en) * | 2007-12-26 | 2008-10-15 | 北京中视中科光电技术有限公司 | Device and apparatus for eliminating laser display speckle |
| CN101593924A (en) * | 2008-05-28 | 2009-12-02 | 北京中视中科光电技术有限公司 | A kind of eliminating coherence device |
| CN101950087A (en) * | 2010-08-20 | 2011-01-19 | 福州高意通讯有限公司 | Method for eliminating laser speckle effect |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100483259C (en) * | 2004-08-30 | 2009-04-29 | 皇家飞利浦电子股份有限公司 | Laser projection system |
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2014
- 2014-05-15 CN CN201410205988.5A patent/CN105093559B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1879057A (en) * | 2004-04-09 | 2006-12-13 | 松下电器产业株式会社 | Laser image display |
| CN201133971Y (en) * | 2007-12-26 | 2008-10-15 | 北京中视中科光电技术有限公司 | Device and apparatus for eliminating laser display speckle |
| CN101593924A (en) * | 2008-05-28 | 2009-12-02 | 北京中视中科光电技术有限公司 | A kind of eliminating coherence device |
| CN101950087A (en) * | 2010-08-20 | 2011-01-19 | 福州高意通讯有限公司 | Method for eliminating laser speckle effect |
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| CN105093559A (en) | 2015-11-25 |
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