CN202075500U - Speckle eliminating device based on field deformation polymer - Google Patents
Speckle eliminating device based on field deformation polymer Download PDFInfo
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- CN202075500U CN202075500U CN2011200308480U CN201120030848U CN202075500U CN 202075500 U CN202075500 U CN 202075500U CN 2011200308480 U CN2011200308480 U CN 2011200308480U CN 201120030848 U CN201120030848 U CN 201120030848U CN 202075500 U CN202075500 U CN 202075500U
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- deformation base
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Abstract
The utility model relates to the technical field of display taking coherent light as a light source, in particular to a speckle eliminating device based on a field deformation polymer, which solves the problems of poor speckle eliminating effect, complex realization structure, easiness in damage, high cost and the like in the traditional speckle eliminating method. The speckle eliminating device based on the field deformation polymer comprises a light pipe with an inner wall as a reflecting mirror surface, the field deformation polymer arranged in the light pipe and an actuating device used for generating an external field required for deformation of the polymer in a driving pipe; a gap is reversed between the field deformation polymer and the inner wall of the light pipe; the actuating device comprises at least two external field applying assemblies arranged inside or outside the light pipe. The speckle eliminating device based on the field deformation polymer has the advantages of reasonable and compact structure, good speckle eliminating effect, easiness in realization, low cost, high laser utilization ratio, stable performance, safety and reliability and brightness balance function.
Description
Technical field
It is the display technique field of light source that the utility model relates to the coherent light, specifically is a kind ofly to cause the speckle cancellation element of deformation base polymer based on the field, is primarily aimed at the optics speckle phenomena that exists in laser display technology and the optical instrument.
Background technology
When being the light source irradiation screen,, cause human eye to see the image that is covered by speckle, have a strong impact on image displaying quality, hinder the observer and from image, extract useful information because the coherence of laser and screen is coarse with laser.Therefore, how to eliminate speckle is to be the optical instrument field of light source and the research and development focus in the display technique field with laser always.And with regard to present result of study, roughly can be divided into two big classes for eliminating the used method of speckle: one, the temporal coherence by the control LASER Light Source reduces speckle, its principle is to produce the boiling speckle by adjusting optical maser wavelength (perhaps frequency) and multi wave length illuminating source, successfully eliminates hot spot by control Laser Time coherence at present and reaches the practical technical scheme that requires and be superposed to the master with multiple light courcess basically; At present successfully eliminating hot spot by control Laser Time coherence reaches the practical technical scheme that requires and is superposed to the master with multiple light courcess basically; Two, eliminate speckle by control laser beam spatial coherence, it is the main method of eliminating speckle at present, ultimate principle is to adjust the PHASE DISTRIBUTION of primitive light wave in the laser beam, thereby change the space distribution of speckle, a plurality of speckle images are superimposed in integral time at human eye, obtain the image that a luminous energy is evenly distributed, and then realize eliminating the purpose of speckle.Concrete method has: adopt rotation scatterer, vibration screen, vibration to have Hadamard figure scatterer, dither optical fiber etc.Said method, or will be, even need high frequency or significantly vibration, or want integrated multiple light courcess by mechanical vibration, the implementation structure complexity, fragile, cost is high, main is that speckle is eliminated poor effect.
Technical scheme by mechanical vibration is also arranged not, for example: the patent No. is that 200820122639.7 Chinese patent discloses " a kind of decohering and shimming device based on scattering ", require to use contain diameter must be less than the scattering medium of 1/10th particle of lambda1-wavelength, to realize that incident laser is formed Rayleigh scattering.Utilize inorganic salts or organic alcohol solution (as NaCl, KCl, KNO in the patent
3Or ZnSO
4Aqueous solution) as scattering medium, existence form based on inorganic salts or organic alcohol solution is hydrated ion or big molecule, little a lot of with respect to optical maser wavelength, can form Rayleigh scattering to incident laser, realize the incident laser beam splitting with this, and in photoconductive tube, conduct, eliminate speckle in the hope of the coherence who reduces incident laser, utilize the mixed light effect of photoconductive tube simultaneously, above-mentioned beam splitting light is carried out homogenize come the shimming eliminating coherence.But test by the described technical method of this application, at room temperature, utilize length only to eliminate speckle for 50mm, the photoconductive tube that is full of saturated NaCl aqueous solution, result's speckle contrast is 70%, does not almost play the effect that reduces speckle.
Summary of the invention
The utility model provides a kind of speckle cancellation element that causes the deformation base polymer based on the field for problems such as the elimination speckle poor effect that solves existing speckle removing method and exist, implementation structure complexity, fragile, cost height.
The utility model is to adopt following technical scheme to realize: the speckle cancellation element that causes the deformation base polymer based on the field, comprise inwall be mirror surface light pipe, be arranged at field in the light pipe and cause the deformation base polymer (this base polymer is under corresponding outfield drives, deformation can take place, and described outfield refers generally to electric field and magnetic field), be used to produce the actuating device in the required outfield of driving tube interpolymer deformation; The field causes between deformation base polymer and light pipe inwall leaves the space; Described actuating device comprises at least two and is arranged in the light pipe or the outer outfield of pipe applies assembly.
Described to cause the deformation base polymer be the electroluminescent deformation base polymer, and corresponding actuating device is an electric field generation device, and the battery lead plate that the outfield of electric field generation device applies assembly-be provided with in pairs is arranged in the light pipe or outside the pipe;
Place the battery lead plate in the light pipe to adopt " minute surface " battery lead plate (be that electrode plate surface has the high reflectance characteristic, energy " total reflection " is incident in the laser beam in the light pipe), fixedly install along the light pipe inwall;
Described causes the deformation base polymer is the magnetostriction base polymer, and corresponding actuating device is a field generator for magnetic, and the outfield of magnetic field generator applies assembly-electromagnet and is arranged at outside the light pipe;
During application, shown in Fig. 2,3, laser beam is expanded bundle through optical lens, and by in the light pipe one end incident pipe, part transmission polymkeric substance in the reflection of light pipe inwall, reenters and penetrates polymkeric substance; Part is beamed into the light beam that multi beam intensity does not wait in the polymer surfaces internal reflection, through repeatedly reflect, after the transmission, by the outgoing of the light pipe other end; In the process that laser beam transmits in light pipe, produce corresponding outfield by actuating device, and control its outfield and apply order and the intensity size that assembly produces the outfield, the field that drives in the light pipe causes the rich and varied continuous deformation of deformation base polymer generation, and then change the direction of propagation and the path in light pipe after the incident laser beam splitting, make PHASE DISTRIBUTION, the emergence angle distribution random variation of emergent light.After projection, the emergent light that out of phase distributes, emergence angle distributes can correspondingly produce a speckle image respectively; In human eye integral time (50ms), a plurality of speckle images are superimposed, will obtain the image that a luminous energy is evenly distributed, and then realized eliminating the purpose of speckle phenomena.
Compared with prior art, the utility model is to be built-in with the light pipe that causes a deformation base polymer transmission laser, make laser that beam splitting take place in transmission course with existing of space between polymkeric substance deformation and polymkeric substance and light pipe inwall, and produce the outfield that Driving Field causes the deformation of deformation base polymer by corresponding actuating device, make the field cause deformation base polymer continuous deformation, cause that the field causes deformation base polymer surface configuration, and and the light pipe inwall between the variation of pore size, and then the direction of propagation and the path of the laser after the randomly changing beam splitting in light pipe, make the laser of incident light pipe at different time with different PHASE DISTRIBUTION and scattering angle distribution outgoing; Thereby produce the space distribution of speckle after the change projection, make a plurality of speckle images superimposed in integral time, obtain the image that a luminous energy is evenly distributed, and then effectively eliminate speckle at human eye.And through experimental test, use device described in the utility model after, the speckle contrast of image can be lower than 4%, the speckle contrast of image has been low to moderate 3.16%, speckle is eliminated works very well; And can increase deformation quantity, deformation frequency that the field causes the deformation base polymer by control to actuating device, improve speckle and eliminate effect; In addition,, have high reflectance, make that the overall light loss of energy of incident laser is very little, guaranteed the high usage of laser, and in the transmission course of laser, realized even light purpose because of the light pipe inwall is a mirror surface; Each ingredient of device described in the utility model is solid-state, does not have problems such as leak of liquid, suspending liquid sedimentation, and stable performance is safe and reliable.In addition, the used light pipe structure of the utility model is very common, and the field causes the deformation base polymer and also very easily obtains, and the also very easily making of corresponding actuating device, therefore has the advantage of low cost.
The utility model is rational in infrastructure, compact, and speckle is eliminated effective, realizes that easily cost is low, laser utilization factor height, and stable performance, safe and reliable, and have even light function.
Description of drawings
Fig. 1 is a concrete structure synoptic diagram of the present utility model;
The transmission state synoptic diagram of device inner light beam described in the utility model when Fig. 2 for the field causes the deformation base polymer deformation does not take place;
The transmission state synoptic diagram of device inner light beam described in the utility model when Fig. 3 causes deformation base polymer generation deformation for the field;
Fig. 4 is the application synoptic diagram of device described in the utility model in the spot scan display system;
Fig. 5 is the application synoptic diagram of device described in the utility model in the full frame display system;
Among the figure: the 101-incident laser;
The 200-outfield applies assembly;
300-speckle cancellation element; The 301-light pipe; The 302-space; The 303-diverging lens; 304,305,306-speckle cancellation element;
The 400-field causes the deformation base polymer;
501,502,503-laser instrument; 504,505,506-mirror;
601,602,603-signal source;
The 700-lens; The 701-relay lens; 702-photomodulator DLP; The 703-TIR prism; The 704-relay lens; The 705-TIR prism; 706-photomodulator DLP; The 707-relay lens; The 708-level crossing; The 709-TIR prism; 710-photomodulator DLP; The 711-prism; 712-micro scanning mirror; 713,714,715-diverging lens;
The 800-screen.
Embodiment
As shown in Figure 1, cause the speckle cancellation element of deformation base polymer based on the field, comprise that inwall is that the light pipe 301 of mirror surface, the field that is arranged in the light pipe 301 cause this base polymer of deformation base polymer 400(under corresponding outfield drives, deformation can take place, and described outfield refers generally to electric field and magnetic field), be used to produce the actuating device in the required outfield of driving tube interpolymer deformation; The field causes between deformation base polymer 400 and light pipe 301 inwalls leaves space 302; Described actuating device comprises at least two and is arranged in the light pipe 301 or the outer outfields of pipe apply assembly 200.
Described field causes deformation base polymer 400 and is the electroluminescent deformation base polymer, and corresponding actuating device is an electric field generation device, and the outfield of electric field generation device applies battery lead plate that assembly 200-is provided with in pairs and is arranged in the light pipe 301 or outside the pipe; Described battery lead plate adopts ITO electrode or metal electrode or processes the grating type activation electrodes of acquisition with the MEMS technology.
Place the battery lead plate in the light pipe 301 to adopt " minute surface " battery lead plate (be that electrode plate surface has the high reflectance characteristic, energy " total reflection " is incident in the laser beam in the light pipe), fixedly install along the light pipe inwall.
Described field causes deformation base polymer 400 and is the magnetostriction base polymer, and corresponding actuating device is a field generator for magnetic, and the outfield of magnetic field generator applies assembly 200-electromagnet and is arranged at outside the light pipe.
During concrete enforcement, described field causes the high molecular polymer that deformation base polymer 400 should select the incident laser wave band is not had absorption, for example: PDMS(polydimethylsiloxane) gel.For effectively reducing the laser speckle contrast, improve laser speckle and eliminate effect, can cause to mix in the deformation base polymer in described field and strengthen the particle of its deformability, for example: be doped with the PDMS gel of TiO 2 particles-, be doped with the PDMS gel of silicone dioxide magnetic microsphere or polystyrene magnetic microsphere or Fe 3 O 4 magnetic microballoon or di-iron trioxide magnetic microsphere-as the magnetostriction base polymer as the electroluminescent deformation base polymer; In addition, another benefit of doping particle: the dimension as the doping particle can cause incident laser generation Mie scattering, carry out the scattering beam splitting, scattered beam causes the influence of deformation base polymer equally to the field because of the outfield, and its direction of propagation and path in light pipe of randomly changing, PHASE DISTRIBUTION when making the scattered light outgoing, emergence angle distribution random variation are more conducive to eliminate speckle phenomena.
Speckle cancellation element described in the utility model can be applied in the laser projection display technology, for example: can be applicable to spot scan projection (Raster-Scanned Displays) system, as shown in Figure 4.Signal source 601,602,603 is modulated tricolor laser device 501,502,503 output powers respectively according to the information of each pixel on the two dimensional image.The tricolor laser light beam is through mirror 504,505,506 and the diverging lens 303 incident speckle cancellation element 300 described in the utility model that is coupled simultaneously, derive in the projection exit facet after modulating, scioptics 700 and micro scanning mirror (Scan Mirror) 712 projects to screen 800.Under the driving of electric signal, micro scanning mirror 712 pursues picture element scan to screen 800 according to two dimensional image.Should be applicable to that the laser-projector of spot scan and laser television show with example.
As shown in Figure 5, can be applicable to full frame Display projector (Full-Frame Displays) system, tricolor laser device 501,502,503 output firm power laser beams import speckle cancellation element 305,306,304 described in the utility model through diverging lens 714,713,715 couplings respectively.After modulation, by relay lens 701,704,707, level crossing 708 and TIR prism 703,705,709 converge to photomodulator DLP 702,706,710.DLP 702,706,710 generates monochrome image according to every frame 2 dimension image information modulation.Tristimulus image is warm through prism 711, is projected to screen 800 by lens 700.Should be applicable to that laser-projector and laser television based on optical modulation devices such as DMD, LCOS show with example.
Claims (6)
1. one kind causes the speckle cancellation element of deformation base polymer based on the field, it is characterized in that: comprise inwall be mirror surface light pipe (301), be arranged at causing deformation base polymer (400), be used to produce the actuating device in the required outfield of driving tube interpolymer deformation in the light pipe (301); The field causes between deformation base polymer (400) and light pipe (301) inwall leaves space (302); Described actuating device comprises at least two and is arranged in the light pipe (301) or the outer outfield of pipe applies assembly (200).
2. the speckle cancellation element that causes the deformation base polymer based on the field according to claim 1, it is characterized in that: described causes deformation base polymer (400) is the electroluminescent deformation base polymer, corresponding actuating device is an electric field generation device, and the battery lead plate that the outfield of electric field generation device applies assembly (200)-be provided with in pairs is arranged in the light pipe or outside the pipe.
3. according to claim 2ly cause the speckle cancellation element of deformation base polymer, it is characterized in that: the grating type activation electrodes that described battery lead plate adopts ITO electrode or metal electrode or obtains with the processing of MEMS technology based on the field.
4. according to claim 2ly cause the speckle cancellation element of deformation base polymer, it is characterized in that: place the battery lead plate in the light pipe (301) to adopt " minute surface " battery lead plate, fixedly install along the light pipe inwall based on the field.
5. the speckle cancellation element that causes the deformation base polymer based on the field according to claim 1, it is characterized in that: described causes deformation base polymer (400) is the magnetostriction base polymer, corresponding actuating device is a field generator for magnetic, and the outfield of magnetic field generator applies assembly-electromagnet and is arranged at outside the light pipe.
6. the speckle cancellation element that causes the deformation base polymer based on the field according to claim 1, it is characterized in that: described field causes the high molecular polymer of deformation base polymer (400) for the incident laser wave band not being had absorb, and is doped with the particle that strengthens its deformability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200308480U CN202075500U (en) | 2011-01-29 | 2011-01-29 | Speckle eliminating device based on field deformation polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200308480U CN202075500U (en) | 2011-01-29 | 2011-01-29 | Speckle eliminating device based on field deformation polymer |
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| Publication Number | Publication Date |
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| CN202075500U true CN202075500U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200308480U Expired - Lifetime CN202075500U (en) | 2011-01-29 | 2011-01-29 | Speckle eliminating device based on field deformation polymer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053384A (en) * | 2011-01-29 | 2011-05-11 | 中北大学 | Speckle elimination device based on field emission deformation polymer |
| CN111323933A (en) * | 2018-12-14 | 2020-06-23 | 青岛海信激光显示股份有限公司 | Speckle eliminating device and method and projection display equipment |
-
2011
- 2011-01-29 CN CN2011200308480U patent/CN202075500U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053384A (en) * | 2011-01-29 | 2011-05-11 | 中北大学 | Speckle elimination device based on field emission deformation polymer |
| CN102053384B (en) * | 2011-01-29 | 2012-07-25 | 中北大学 | Speckle elimination device based on field emission deformation polymer |
| WO2012100641A1 (en) * | 2011-01-29 | 2012-08-02 | 中北大学 | Speckle removal device based on polymer of field-induced deformation |
| CN111323933A (en) * | 2018-12-14 | 2020-06-23 | 青岛海信激光显示股份有限公司 | Speckle eliminating device and method and projection display equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xia Yun Inventor after: Chen Xuyuan Inventor after: Gao Wenhong Inventor after: Shi Yunbo Inventor after: Zhang Wendong Inventor before: Chen Xuyuan Inventor before: Gao Wenhong Inventor before: Shi Yunbo Inventor before: Zhang Wendong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN XUYUAN GAO WENHONG SHI YUNBO ZHANG WENDONG TO: XIA YUN CHEN XUYUAN GAO WENHONG SHI YUNBO ZHANG WENDONG |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20111214 Effective date of abandoning: 20120725 |