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WO2012129785A1 - Module source de lumière de projection laser et procédé de mise en forme du faisceau correspondant, dispositif d'écran laser - Google Patents

Module source de lumière de projection laser et procédé de mise en forme du faisceau correspondant, dispositif d'écran laser Download PDF

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Publication number
WO2012129785A1
WO2012129785A1 PCT/CN2011/072289 CN2011072289W WO2012129785A1 WO 2012129785 A1 WO2012129785 A1 WO 2012129785A1 CN 2011072289 W CN2011072289 W CN 2011072289W WO 2012129785 A1 WO2012129785 A1 WO 2012129785A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
module
light source
coupled
laser module
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.)
Ceased
Application number
PCT/CN2011/072289
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English (en)
Chinese (zh)
Inventor
陈昱
田有良
李巍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Hiview Tech Co Ltd
Original Assignee
Hisense Hiview Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hisense Hiview Tech Co Ltd filed Critical Hisense Hiview Tech Co Ltd
Priority to PCT/CN2011/072289 priority Critical patent/WO2012129785A1/fr
Publication of WO2012129785A1 publication Critical patent/WO2012129785A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2013—Plural light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/06—Colour photography, other than mere exposure or projection of a colour film by additive-colour projection apparatus

Definitions

  • the present invention relates to the field of optics, and in particular to a laser projection light source module, a beam shaping method thereof, and a laser display device.
  • BACKGROUND OF THE INVENTION Laser display technology is characterized by rich colors, energy saving and environmental protection, and is considered to be the next generation mainstream display technology. Compared with the LED light source, the optical expansion of the laser light source is much smaller, which is beneficial to the design of an efficient projection light machine. However, since the laser light source will bring the speckle of the projected image, in order to reduce the speckle noise of the image, the dephasing module will be placed between the light source and the optical machine, and the dephasing thousand module will increase the optical of the laser beam.
  • a laser projection light source module is provided.
  • the laser projection light source module comprises: a first laser module for emitting a first light beam; a second laser module for emitting a second light beam; a third laser module for emitting a third light beam; and an optical coupler for Receiving the first light beam, the second light beam, and the third light beam, and coupling the first light beam, the second light beam, and the third light beam into a first coupled light beam, wherein the first light beam
  • the laser module, the second laser module, and the third laser module are respectively selected from one of a red laser module, a blue laser module, and a green laser module, and are different.
  • a beam shaping method of a laser projection light source module is provided.
  • the beam shaping method includes: receiving a first beam from a first laser module; receiving a second beam from the second laser module; receiving a third beam from the third laser module; and transmitting the first beam, the first The two beams and the third beam are combined into a first combined beam, wherein the first laser module, the second laser module, and the third laser module are respectively selected from a red laser module, a blue laser module, and a green One of the laser modules is different and different.
  • a laser display device includes any of the laser projection light source modules provided by the present invention.
  • a laser projection light source module comprising: a first laser module for emitting a first light beam; a second laser module for emitting a second light beam; and a third laser module for emitting a third light beam And an optical coupler for receiving the first light beam, the second light beam and the third light beam, and coupling the first light beam, the second light beam, and the third light beam into a first coupling a light beam, wherein the first laser module, the second laser module, and the third laser module are respectively selected from one of a red laser module, a blue laser module, and a green laser module, and are different, since three
  • the beam is coupled to a beam of light, thereby compressing the amount of optical expansion, and solves the problem that the effect of dissipating the spot of the laser projection light source module in the prior art is not ideal, thereby achieving the purpose of improving the effect of dissipating the spot.
  • FIG. 1 is a schematic view of a projection system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of beam coupling in a laser projection light source module according to an embodiment of the present invention
  • FIG. 3 is a laser projection light source according to an embodiment of the present invention.
  • 4 is a schematic diagram of beam shaping in an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a beam coupled in a fiber coupler in accordance with an embodiment of the present invention
  • FIG. 5 is a perspective view of another embodiment of the present invention coupled in a fiber coupler
  • FIG. 6 is a schematic diagram of compression of an amount of expansion of polychromatic light according to another embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a projection system according to an embodiment of the present invention.
  • the projection system includes a laser light source module (inside the dotted line in FIG. 1) and a projection module.
  • the laser light source module comprises three parts: a monochrome red, green and blue laser module, that is, a red light module 10, a green light module 20 and a blue light module 30, a multicolor optical optical expansion amount compression module 200, and a laser dephasing thousand module 300.
  • a shaping and homogenizing module may also be included in the laser light source module.
  • the red, green and blue monochromatic laser module may be composed of a single laser or a plurality of lasers, or may be a laser array. Further, the laser array may be a laser line array or a laser array.
  • the laser can be a semiconductor laser and a solid frequency doubled laser.
  • the etendue of the light source is the product of the area of the optically emitted beam and the divergence angle.
  • FIG. 2 is a schematic diagram of beam coupling in a laser projection light source module according to an embodiment of the present invention. As shown in Fig.
  • the red light A enters the green optical fiber and the green light B through the coupler, and the blue light C also enters the green optical fiber and the green light B through the coupler.
  • the area of the red, green and blue light E of the output beam is output. It is still the area of the green fiber.
  • the output fiber is one, not the three of the bundle.
  • the area of the output beam is only the total area of the original red, green and blue beams.
  • One-third of the optical expansion is compressed. Since the three beams are coupled into one beam, the amount of optical expansion is compressed, so that the beam of the light source can be effectively received by the light machine, thereby achieving the purpose of improving the dissipating effect.
  • the laser projection light source module provided by the embodiment of the present invention is described in detail below.
  • the laser projection light source module comprises: a first laser module for emitting a first light beam; a second laser module for emitting a second light beam; a third laser module for emitting a third light beam; and an optical coupler for receiving the first light beam, the second And combining the first beam, the second beam, and the third beam into a first coupled beam, wherein the first laser module, the second laser module, and the third laser module are laser modules of different colors.
  • the optical expansion amount is compressed, thereby improving The purpose of dissipating the spot effect.
  • the first laser module, the second laser module, and the third laser module may be one selected from the group consisting of a red laser module, a blue laser module, and a green laser module (at this time, the first beam, the second beam, and the third One of the beams is red, one is green, and the other is blue. It can also be one of the other three colors, for example, red, yellow, and green.
  • the above laser projection light source module may include laser modules of four colors or five colors in addition to the laser modules of three colors, that is, the first laser module, the second laser module, and the third laser module, for example, It includes laser modules in four colors of red, yellow, green and blue.
  • the optical coupler comprises a first optical coupler and a second optical coupler.
  • the laser projection light source module further comprises a step mirror.
  • the step mirror includes a plurality of reflecting portions for respectively reflecting light from respective lasers in the laser array, wherein a projection length of each of the plurality of reflecting portions in a light emitting surface of each laser in the laser array They are respectively equal to the length of the light-emitting surface corresponding thereto and each of the plurality of reflecting portions is at an angle of 45° with the corresponding single-tube light-emitting region.
  • FIG. 3 is a schematic diagram of beam shaping in a laser projection light source module according to an embodiment of the present invention. As shown in FIG.
  • the original LD of the five lasers emits a beam having a diameter D, and after being shaped by the step mirror 50, the outgoing beam is d, the beam diameter is greatly reduced, and the optical expansion is also reduced.
  • the fast axis collimation and slow axis collimation of the light from the five lasers may also be performed first by the fast and slow axis collimating mirror 40 before being shaped by the step mirror 50.
  • the output interfaces of the first laser module, the second laser module and the third laser module are optical fiber output interfaces
  • the optical coupler is a fiber coupler.
  • the laser projection light source module may further include a plurality of optical fibers.
  • a first optical fiber is connected between the first laser module and the fiber coupler for transmitting the first light beam; and a second optical fiber is connected between the second laser module and the fiber coupler for transmitting the second light beam; a third optical fiber is coupled between the third laser module and the fiber coupler for transmitting the third light beam; and a fourth optical fiber is coupled to the fiber coupler for transmitting the first coupled light beam.
  • the cross-sectional area of the first combined beam is an average of the cross-sectional areas of the first beam, the second beam, and the third beam or equal to the largest cross-sectional area of the first beam, the second beam, and the third beam. Further preferably, the cross-sectional areas of the first beam, the second beam, the third beam, and the first combined beam are equal.
  • the area of the output beam can be only one-third of the total area of the original red, green and blue beams, and the etendue is effectively compressed.
  • the laser projection light source module further comprises: a dephasing module, connected to the optical coupler, for receiving the first coupled beam.
  • Embodiment 4 Fig. 4 is a schematic diagram showing the coupling of a light beam in a fiber coupler in accordance with an embodiment of the present invention
  • Fig. 5 is a schematic view showing the coupling of a light beam in a fiber coupler in accordance with another embodiment of the present invention.
  • the transfer of light from one fiber to another in a fiber coupler is achieved by the coupling between the optical modes.
  • Figure 4 when the cores of the two fibers are close enough, the various optics in the two fibers The field modes overlap, in which the light field in one fiber excites the light field of the other fiber, with the result that the light is repeatedly coupled in the two fibers.
  • the invention proposes a scheme for reducing the optical expansion of the laser light source, and provides a design space for the insertion of the dephasing thousand module, which can enhance the effect of dissipating the plaque.
  • the comparison document discloses a variation of the multicolor free space combining scheme. The combination of multi-color free space is very common, and our solution adds a monochromatic photosynthetic beam-optic optical expansion module and a de-phased module, paying more attention to the overall architecture of the laser source module.
  • FIG. 6 is a schematic diagram of compression of an amount of expansion of polychromatic light according to another embodiment of the present invention.
  • the green anti-red lens sheet 80 is fully transparent to the red light A and all-inverted to the green light B.
  • the blue anti-red-green lens sheet 90 is completely transparent to the red light A and the green light B, Blu-ray C is all-reverse.
  • the output is red, green and blue, and the output beam is only one-third of the total area of the original red, green and blue beams.
  • the above scheme is based on the red, green and blue light source, and is also applicable to the case of four colors (such as red, yellow, green and blue) and five color light sources.
  • the light beam from the multi-color optical optical expansion compression module 200 further enters the dephasing module
  • the optical spread of a projector is generally determined by a micro-injection device (DLP, LCOS) and a projection lens. If the etendue of the light source exceeds the optical spread of the light machine, the light beam of the light source will not be efficiently collected. If the multicolor optical expansion compression module 200 is not passed through the figure, the optical expansion of the light beam emerging from the monochromatic red, green and blue laser module may be greater than the optical expansion of the optical machine after dissipating the speckle, in particular, the dissipating effect The stronger the module, the greater the increase in optical expansion.
  • a bundle of bundles of red, green, and blue output fibers has a diameter of 2.5 mm and a divergence angle of 12 degrees.
  • the original beam is expanded to a diameter of 5.0mm and a divergence angle of 6 degrees.
  • the scattering angle of the random phase plate itself is 20 degrees, then the optical expansion of the beam.
  • 12 mm 1 'sr For optical machines with 0.6 ⁇ DLP and F#/3.0, the optical expansion is 5 mm 2 - sr , and the light of the light source cannot be effectively received by the optical machine.
  • the embodiment of the present invention further provides a method for shaping a laser beam in a laser projection light source module.
  • the method for shaping a laser beam in the laser projection light source module includes: Step S101: receiving a first beam from the first laser module Step S102, receiving a second light beam from the second laser module; step S103, receiving a third light beam from the third laser module; Step S104, coupling the first light beam, the second light beam, and the third light beam into a first coupled light beam, wherein the first laser module, the second laser module, and the third laser
  • the modules are laser modules of different colors.
  • the first laser module, the second laser module, and the third laser module may be one selected from the group consisting of a red laser module, a blue laser module, and a green laser module (at this time, the first beam, the second beam, and the third One of the beams is red, one is green, and the other is blue. It can also be one of the other three colors, for example, red, yellow, and green.
  • the above laser projection light source module may include laser modules of four colors or five colors in addition to the laser modules of three colors, that is, the first laser module, the second laser module, and the third laser module, for example, It includes laser modules in four colors of red, yellow, green and blue.
  • coupling the first beam, the second beam, and the third beam to the first coupled beam comprises: coupling the first beam and the second beam into a second coupled beam;
  • the second coupled beam and the third beam are coupled as a third coupled beam.
  • the present invention also provides a laser display device, which may include a laser projection light source module provided by any of the embodiments of the present invention.
  • the laser display device can be a projector or a laser TV or the like. From the above description, it can be seen that the present invention can improve the effect of dissipating plaque.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

La présente invention concerne un module source de lumière de projection laser et un procédé de mise en forme du faisceau correspondant ainsi qu'un dispositif d'écran laser. Le module source de lumière de projection laser comprend un premier module laser (10) servant à émettre le premier faisceau, un second module laser (20) servant à émettre le deuxième faisceau, un troisième module laser (30) servant à émettre le troisième faisceau et un coupleur optique servant à recevoir le premier faisceau, le deuxième faisceau et le troisième faisceau et couplant les premier, deuxième et troisième faisceaux sous forme d'un premier faisceau de couplage, ledit premier module laser, ledit deuxième module laser et ledit troisième module laser étant des modules laser ayant des couleurs différentes. L'effet de réduction du chatoiement du module source de lumière de projection laser peut être amélioré.
PCT/CN2011/072289 2011-03-30 2011-03-30 Module source de lumière de projection laser et procédé de mise en forme du faisceau correspondant, dispositif d'écran laser Ceased WO2012129785A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/072289 WO2012129785A1 (fr) 2011-03-30 2011-03-30 Module source de lumière de projection laser et procédé de mise en forme du faisceau correspondant, dispositif d'écran laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/072289 WO2012129785A1 (fr) 2011-03-30 2011-03-30 Module source de lumière de projection laser et procédé de mise en forme du faisceau correspondant, dispositif d'écran laser

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WO2012129785A1 true WO2012129785A1 (fr) 2012-10-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105446065A (zh) * 2015-12-31 2016-03-30 中国华录集团有限公司 一种激光投影系统
CN103888702B (zh) * 2012-12-21 2017-04-12 卡西欧计算机株式会社 能够使激光充分扩散的光源装置和投影仪以及图像投影方法
CN106569379A (zh) * 2015-10-08 2017-04-19 海信集团有限公司 一种激光消散斑光路及双色激光光源、三色激光光源
CN106773487A (zh) * 2017-01-06 2017-05-31 深圳市中科创激光技术有限公司 激光显示设备

Citations (6)

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Publication number Priority date Publication date Assignee Title
US6240116B1 (en) * 1997-08-14 2001-05-29 Sdl, Inc. Laser diode array assemblies with optimized brightness conservation
JP2007133161A (ja) * 2005-11-10 2007-05-31 Sumitomo Electric Ind Ltd 照明用光学系及びそれを利用したプロジェクタ
US7675013B2 (en) * 2005-05-12 2010-03-09 Canon Kabushiki Kaisha Image displaying apparatus with control over the output ratio of a plurality of light sources
CN101772722A (zh) * 2007-08-09 2010-07-07 柯尼卡美能达精密光学株式会社 激光投影装置以及图像投影方法
CN101825829A (zh) * 2009-03-06 2010-09-08 上海三鑫科技发展有限公司 微型投影机用光学引擎
US20100277698A1 (en) * 2009-04-30 2010-11-04 Harland Mark A Digital projector using arrayed light sources

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6240116B1 (en) * 1997-08-14 2001-05-29 Sdl, Inc. Laser diode array assemblies with optimized brightness conservation
US7675013B2 (en) * 2005-05-12 2010-03-09 Canon Kabushiki Kaisha Image displaying apparatus with control over the output ratio of a plurality of light sources
JP2007133161A (ja) * 2005-11-10 2007-05-31 Sumitomo Electric Ind Ltd 照明用光学系及びそれを利用したプロジェクタ
CN101772722A (zh) * 2007-08-09 2010-07-07 柯尼卡美能达精密光学株式会社 激光投影装置以及图像投影方法
CN101825829A (zh) * 2009-03-06 2010-09-08 上海三鑫科技发展有限公司 微型投影机用光学引擎
US20100277698A1 (en) * 2009-04-30 2010-11-04 Harland Mark A Digital projector using arrayed light sources

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103888702B (zh) * 2012-12-21 2017-04-12 卡西欧计算机株式会社 能够使激光充分扩散的光源装置和投影仪以及图像投影方法
CN106569379A (zh) * 2015-10-08 2017-04-19 海信集团有限公司 一种激光消散斑光路及双色激光光源、三色激光光源
CN105446065A (zh) * 2015-12-31 2016-03-30 中国华录集团有限公司 一种激光投影系统
CN106773487A (zh) * 2017-01-06 2017-05-31 深圳市中科创激光技术有限公司 激光显示设备
CN106773487B (zh) * 2017-01-06 2018-11-09 深圳市中科创激光技术有限公司 激光显示设备

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