CN200976052Y - Laser array optical fiber coupled illumination system - Google Patents
Laser array optical fiber coupled illumination system Download PDFInfo
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- CN200976052Y CN200976052Y CN 200620119438 CN200620119438U CN200976052Y CN 200976052 Y CN200976052 Y CN 200976052Y CN 200620119438 CN200620119438 CN 200620119438 CN 200620119438 U CN200620119438 U CN 200620119438U CN 200976052 Y CN200976052 Y CN 200976052Y
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Abstract
The utility model discloses a laser array fiber coupled lighting system, which comprises a plurality of lasers with laser emission, a collimator and a convergence element arranged on the top of outlet of the laser and vertically with the direction of laser emission, a convergence device the inlet of which is connected with each outlet of the convergence element in order to converge the lights emitted by the laser and a shimming shaped device connected with the outlet of the convergence device used to shim the lights emitted by the laser. The utility model has the advantages of eliminating the speckle effects caused by the interference of the laser and meeting the requirements of high brightness and uniformity of the lighting as well as small size, low cost, high efficiency, stable performance and easy to maintain. The utility model can be uses as display devices powered by laser such as front laser projection and behind laser projection.
Description
Technical field
The utility model relates to laser lighting, and particularly a kind of laser array optical coupling structure is eliminated the illuminator of speckle.
Background technology
Laser more and more is widely used as a kind of brightness height, monochromaticity light source good, good directionality.Use laser to have the saturation degree height as the display system of light source, advantages such as colour gamut broadness are display techniques of new generation, play an important role to improving image quality and display system efficient.But because the high coherence of laser, this display system is prone to speckle effect.Speckle is owing to interfere formation alternately from the coherent wave of diffuse reflection surface scattering.This speckle effect is the major reason of image resolution ratio and deterioration in image quality.
At present, the technology of eliminate laser speckle mainly is to use phase modulation component, by rotation or periodic mobile micro optical element or random phase plate, it makes laser beam be divided into a plurality of segment beams and these light beams are average in time to reduce the speckle effect of laser beam.But, to use micro optical element or there is complex manufacturing technology in random phase plate, interface dimensions is big and shortcoming such as cost height, and need high-frequency electric machines to drive, the effect of eliminating speckle is also not ideal.In addition, people have also adopted the methods such as optical system of vibration screen, holographic diffusion and various complexity, but these methods involve great expense, complex structure, and the effect of eliminating speckle is also good inadequately.
The more important thing is, the LASER Light Source that adopts at the laser display optical projection system of giant-screen mainly is high-power separate unit laser instrument, have that volume is big, cost is high, efficient is low, unstable properties and shortcoming such as difficult in maintenance, be that the restriction laser display technology hinders greatly to one of giant-screen development.
Therefore, at the deficiencies in the prior art, people just wish to obtain high power laser light output when realizing eliminating speckle effect, overcome the deficiency of separate unit high power laser, realize that the giant-screen laser projection shows.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of lighting requirement that satisfies high brightness and uniformity coefficient is provided, is applicable to the illuminator of eliminating speckle with laser as the laser array optical coupling structure of the display device of light source.
In order to achieve the above object, the utility model is taked following technical scheme.
A kind of illuminator of laser array optical fiber coupling comprises:
The laser instrument of a plurality of emission light beams;
Assemble element at each laser instrument light-emitting window front end collimating element of vertical placement with the Laser emission direction and;
One buncher, the light-emitting window of each convergent component is connected with the inlet optics of described buncher, and the laser that is used for all laser instruments are sent carries out boundling;
One shimming apparatus for shaping, this shimming apparatus for shaping is connected with the outlet optics of buncher, and the laser that is used for buncher is sent carries out shimming.
In technique scheme, described buncher is made up of multifiber, the multifiber boundling becomes single fiber form output laser, places described optical fiber at the rear of each described convergent component, and the light beam that each laser instrument is launched is coupled in the output optical fibre one by one through convergent component.
In technique scheme, described laser instrument is semiconductor laser or solid state laser, or adopts the frequency conversion laser of semiconductor laser or solid state laser.
In technique scheme, described shimming apparatus for shaping comprises the array type device, as fly's-eye lens, little fly's-eye lens and array mirror etc., or optical wand-type device such as integrating rod, optical fiber etc., this shimming apparatus for shaping makes the beam distribution of incident even, and make output beam have predetermined shape, efficiency of light energy utilization height.
In technique scheme, a plurality of described laser instruments send the laser of identical wavelength.
In technique scheme, a plurality of described laser instruments send different wavelength of laser.
Compared with prior art, the beneficial effects of the utility model are:
1) can eliminate the speckle effect that laser interference forms;
2) satisfy the lighting requirement of high brightness and uniformity coefficient;
3) volume is little, cost is low, efficient is high, stable performance and maintaining easily, and is applicable to that laser front projection, laser back projection etc. utilize the display device of laser as light source.
Description of drawings
Fig. 1 is the device synoptic diagram of the utility model embodiment 1;
Fig. 2 is the cross sectional representation of bundling optical fiber among the utility model embodiment 1;
Fig. 3 is the synoptic diagram of inside of optical fibre wavefront reflection condition among the utility model embodiment 1.
Fig. 4 is the device synoptic diagram of the utility model embodiment 2.
Fig. 5 is the cross sectional representation of the utility model embodiment 2 bundling optical fibers.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Embodiment 1:
This sentences an embodiment and illustrates the utility model is used for the monochromatic illumination system.Make the illuminator that speckle is eliminated in the coupling of the utility model array type laser fiber with reference to Fig. 1, comprise n platform mono-colour laser L
1, L
2... L
n, n=19 in the present embodiment, it is the semiconductor laser of 635nm that laser instrument adopts wavelength, power is that hundred milliwatts are to watt level.Corresponding each laser instrument front end, place a collimation lens and a convergent lens with beam collimation and focusing perpendicular to the Laser emission direction, the focal length of collimation lens and convergent lens and aperture choose the parameter that depends on laser, carrying out suitably choosing of focal length and aperture according to the parameter of concrete laser is that those skilled in the art are competent.Light beam is coupled in the input end face of output optical fibre after focusing on through convergent lens.Shown in Fig. 1, what be placed on laser instrument L1 back is collimation lens 11 and convergent lens 12 and optical fiber 13, all corresponding collimation lens, convergent lens and the optical fiber separately in other each laser instrument back.
As shown in Figure 2, the multiple beams of optical fiber boundling becomes the single fiber form, forms a buncher, realizes high power-beam output.19 optical fiber of expression are become a circular array by boundling among Fig. 2, are not limited to circular array certainly, can also be rectangle, triangle, ellipse or various polygons etc.
As shown in Figure 3, light beam repeatedly reflects mixed light in optical fiber, wave front is upset, thereby reduces the coherence of these light beams, and therefore the laser beam of multi-station laser output has been eliminated mutual interference and has been produced speckle owing to exist the difference of frequency and phase place not satisfy coherent condition each other; The multifiber boundling with the output of single fiber form, is realized the high power-beam illumination;
The light beam of the single fiber form output that buncher forms forms the uniform light field of intensity distributions through light beam shimming apparatus for shaping 14, and this light field is used for laser display system.The shimming apparatus for shaping 14 of present embodiment adopts little fly's-eye lens to realize.
Embodiment 2:
This sentences an embodiment and illustrates the utility model is used for color illumination system.As shown in Figure 4, make the embodiment that array laser optical coupling structure of the present utility model is eliminated white illumination of speckle.N platform laser instrument is by R (red), G (green), B (indigo plant) three primary colours or many primary colours laser constitution, adopt the laser instrument of R (red), G (green), B (indigo plant) three primary colours in the present embodiment, tricolor laser device quantity is by separate unit laser power and the decision of vision white balance power ratio, and this can be competent at for those skilled in the art.Present embodiment n=19.
Other are with embodiment 1.Corresponding each laser instrument front end, Laser emission direction are placed a suitable focal length and aperture collimation lens and convergent lens makes light beam with beam collimation and focusing, and light beam focuses on and is coupled in the input end face of output optical fibre; Every laser beam repeatedly reflects mixed light in optical fiber, the optical fiber of the output of n bar R, G, B three look laser is arranged boundling in a certain order and become the single fiber form, as shown in Figure 5.The principle of optical fiber arrangements is followed the principle of uniform color mixture.
It should be noted last that above embodiment is only unrestricted in order to the explanation the technical solution of the utility model.Although the utility model is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is made amendment or is equal to replacement, the spirit and scope that do not break away from technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (9)
1, a kind of illuminator of laser array optical fiber coupling comprises the shimming apparatus for shaping; It is characterized in that, also comprise:
The laser instrument of a plurality of emission light beams;
Assemble element at each laser instrument light-emitting window front end collimating element of vertical placement with the Laser emission direction and;
One buncher, the light-emitting window of each convergent component is connected with the inlet optics of described buncher, and the laser that is used for all laser instruments are sent carries out boundling;
Described shimming apparatus for shaping is connected with the outlet optics of described buncher, and the laser that is used for buncher is sent carries out shimming.
2, the illuminator that is coupled according to the described laser array optical fiber of claim 1, it is characterized in that, described buncher is made up of multifiber, the multifiber boundling becomes single fiber form output laser, place a described optical fiber at the rear of each described convergent component, the light beam that each laser instrument is launched is coupled in the described optical fiber one by one through convergent component.
3, according to the illuminator of claim 1 or 2 described laser array optical fiber couplings, it is characterized in that described laser instrument is semiconductor laser or solid state laser, or its frequency conversion laser.
4, according to the illuminator of the described laser array optical fiber coupling of claim 1, it is characterized in that described shimming apparatus for shaping comprises array type device or optical wand-type device.
5, according to the illuminator of the described laser array optical fiber coupling of claim 4, it is characterized in that described array type device is fly's-eye lens, little fly's-eye lens or array mirror, described optical wand-type device is integrating rod or optical fiber.
6, according to the illuminator of the described laser array optical fiber coupling of claim 1, it is characterized in that all described laser instruments are the laser instrument that sends identical wavelength.
7, according to the illuminator of the described laser array optical fiber coupling of claim 1, it is characterized in that all described laser instruments are for sending the different wavelength of laser device.
8, according to the illuminator of the described laser array optical fiber coupling of claim 1, it is characterized in that described laser instrument comprises three kinds of primary colours laser instruments of red, green, blue.
9, according to the illuminator of claim 6,7 or 8 described laser array optical fiber couplings, it is characterized in that described buncher is made up of multifiber, place a described optical fiber at the rear of each described convergent component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119438 CN200976052Y (en) | 2006-09-08 | 2006-09-08 | Laser array optical fiber coupled illumination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119438 CN200976052Y (en) | 2006-09-08 | 2006-09-08 | Laser array optical fiber coupled illumination system |
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| CN200976052Y true CN200976052Y (en) | 2007-11-14 |
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| CN 200620119438 Expired - Fee Related CN200976052Y (en) | 2006-09-08 | 2006-09-08 | Laser array optical fiber coupled illumination system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102349004A (en) * | 2009-03-11 | 2012-02-08 | 罗伯特·博世有限公司 | Light source comprising a diode laser and a plurality of optical fibers |
| CN103777365A (en) * | 2012-10-24 | 2014-05-07 | 中国科学院光电研究院 | Laser projection display system and method |
| CN106094222A (en) * | 2016-08-23 | 2016-11-09 | 江苏北方湖光光电有限公司 | A kind of high quality beam homogenizing method in semiconductor laser illumination |
| CN107483112A (en) * | 2011-08-26 | 2017-12-15 | 三流明公司 | High speed FSO |
| CN110575121A (en) * | 2019-09-02 | 2019-12-17 | 重庆金山医疗器械有限公司 | endoscope light-combining illumination system and method |
| CN110636270A (en) * | 2018-06-21 | 2019-12-31 | 深圳光峰科技股份有限公司 | Display device |
| US10615871B2 (en) | 2009-02-17 | 2020-04-07 | Trilumina Corp. | High speed free-space optical communications |
| CN111381379A (en) * | 2018-12-29 | 2020-07-07 | Tcl集团股份有限公司 | Beam shaping device and projection equipment |
| US11095365B2 (en) | 2011-08-26 | 2021-08-17 | Lumentum Operations Llc | Wide-angle illuminator module |
-
2006
- 2006-09-08 CN CN 200620119438 patent/CN200976052Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10615871B2 (en) | 2009-02-17 | 2020-04-07 | Trilumina Corp. | High speed free-space optical communications |
| US11405105B2 (en) | 2009-02-17 | 2022-08-02 | Lumentum Operations Llc | System for optical free-space transmission of a string of binary data |
| US11121770B2 (en) | 2009-02-17 | 2021-09-14 | Lumentum Operations Llc | Optical laser device |
| US11075695B2 (en) | 2009-02-17 | 2021-07-27 | Lumentum Operations Llc | Eye-safe optical laser system |
| US10938476B2 (en) | 2009-02-17 | 2021-03-02 | Lumentum Operations Llc | System for optical free-space transmission of a string of binary data |
| CN102349004B (en) * | 2009-03-11 | 2013-08-21 | 罗伯特·博世有限公司 | Light source comprising a diode laser and a plurality of optical fibers |
| CN102349004A (en) * | 2009-03-11 | 2012-02-08 | 罗伯特·博世有限公司 | Light source comprising a diode laser and a plurality of optical fibers |
| CN107483112A (en) * | 2011-08-26 | 2017-12-15 | 三流明公司 | High speed FSO |
| US11095365B2 (en) | 2011-08-26 | 2021-08-17 | Lumentum Operations Llc | Wide-angle illuminator module |
| US11451013B2 (en) | 2011-08-26 | 2022-09-20 | Lumentum Operations Llc | Wide-angle illuminator module |
| CN103777365A (en) * | 2012-10-24 | 2014-05-07 | 中国科学院光电研究院 | Laser projection display system and method |
| CN106094222A (en) * | 2016-08-23 | 2016-11-09 | 江苏北方湖光光电有限公司 | A kind of high quality beam homogenizing method in semiconductor laser illumination |
| CN110636270A (en) * | 2018-06-21 | 2019-12-31 | 深圳光峰科技股份有限公司 | Display device |
| CN110636270B (en) * | 2018-06-21 | 2022-02-22 | 深圳光峰科技股份有限公司 | Display device |
| CN111381379A (en) * | 2018-12-29 | 2020-07-07 | Tcl集团股份有限公司 | Beam shaping device and projection equipment |
| CN110575121A (en) * | 2019-09-02 | 2019-12-17 | 重庆金山医疗器械有限公司 | endoscope light-combining illumination system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: OPTOELECTRONICS TECHNOLOGY CO., LTD. OF BEIJING ZH Free format text: FORMER OWNER: INST OF PHOTOELECTRICS, C.A.S Effective date: 20140102 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100080 HAIDIAN, BEIJING TO: 100094 HAIDIAN, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140102 Address after: 100094, Beijing, Yongfeng Haidian District industrial base, No. 3 North Wing Road, modern enterprise accelerator B block, 4 floor Patentee after: Optoelectronics Technology Co., Ltd. Of Beijing Zhongshida & Chinese Academy Of Address before: 100080, No. 8, four street, Haidian District, Beijing Patentee before: Inst of Photoelectrics, C.A.S |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20140908 |
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| EXPY | Termination of patent right or utility model |