WO2012129785A1 - Laser projection light source module and beam shaping method thereof as well as laser display equipment - Google Patents

Laser projection light source module and beam shaping method thereof as well as laser display equipment 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
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WO
WIPO (PCT)
Prior art keywords
laser
module
light source
coupled
laser module
Prior art date
Application number
PCT/CN2011/072289
Other languages
French (fr)
Chinese (zh)
Inventor
陈昱
田有良
李巍
Original Assignee
青岛海信信芯科技有限公司
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 青岛海信信芯科技有限公司 filed Critical 青岛海信信芯科技有限公司
Priority to PCT/CN2011/072289 priority Critical patent/WO2012129785A1/en
Publication of WO2012129785A1 publication Critical patent/WO2012129785A1/en

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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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Abstract

A laser projection light source module and a beam shaping method thereof as well as a laser display equipment are disclosed. The laser projection light source module comprises a first laser module (10) for emitting the first beam, a second laser module (20) for emitting the second beam, a third laser module (30) for emitting the third beam, and an optical coupler for receiving the first beam, the second beam and the third beam, and coupling the first, second and third beams into a first coupling beam, wherein the first laser module, the second laser module and the third laser module are the laser modules with different colors. The speckle reduction effect of the laser projection light source module can be improved.

Description

激光投影光源^：及其光束整形方法、 激光显示设备 技术领域 本发明涉及光学领域， 具体而言， 涉及一种激光投影光源模块及其光束 整形方法、 激光显示设备。 背景技术 激光显示技术具有色彩丰富、 节能环保等特点， 被认为是下一代主流显 示技术。 与 LED光源相比， 激光光源的光学扩展量小了许多， 有利于高效的 投影光机的设计。 但是， 由于激光光源相千性会带来投影图像的散斑， 为减 小图像的散斑噪声， 消相千模块会置于光源与光机之间， 消相千模块会增加 激光束的光学扩展量， 以致光源的光束不能有效地为光机接收。 由于光学扩 展量的限制， 消相千模块的散射角不能太大， 消散斑效果不够理想。 发明内容 为此， 本发明的主要目的在于提供一种激光投影光源模块及其光束整形 方法、 激光显示设备， 以解决上述问题。 为了实现上述目的， 根据本发明的一个方面， 提供了一种激光投影光源 模块。 该激光投影光源模块包括： 第一激光模块， 用于发出第一光束； 第二 激光模块， 用于发出第二光束； 第三激光模块， 用于发出第三光束； 以及光 耦合器， 用于接收所述第一光束、 所述第二光束和所述第三光束以及将所述 第一光束、 所述第二光束和所述第三光束耦合为第一耦合光束， 其中， 所述 第一激光模块、 所述第二激光模块和所述第三激光模块分别选自红色激光模 块， 蓝色激光模块和绿色激光模块中之一并且各不相同。 为了实现上述目的， 根据本发明的另一方面， 提供了一种激光投影光源 模块的光束整形方法。 该光束整形方法包括： 接收来自第一激光模块的第一 光束； 接收来自第二激光模块的第二光束； 接收来自第三激光模块的第三光 束； 以及将所述第一光束、 所述第二光束和所述第三光束 合为第一 合光 束， 其中， 所述第一激光模块、 所述第二激光模块和所述第三激光模块分别 选自红色激光模块， 蓝色激光模块和绿色激光模块中之一并且各不相同。 为了实现上述目的，根据本发明的又一方面，提供了一种激光显示设备。 该激光显示设备包括本发明提供的任意一种激光投影光源模块。 通过本发明， 釆用包括以下部分的激光投影光源模块： 第一激光模块， 用于发出第一光束； 第二激光模块， 用于发出第二光束； 第三激光模块， 用 于发出第三光束； 以及光耦合器， 用于接收所述第一光束、 所述第二光束和 所述第三光束以及将所述第一光束、 所述第二光束和所述第三光束耦合为第 一耦合光束， 其中， 所述第一激光模块、 所述第二激光模块和所述第三激光 模块分别选自红色激光模块， 蓝色激光模块和绿色激光模块中之一并且各不 相同， 由于将三根光束耦合为了一根光束， 从而压缩了光学扩展量， 解决了 现有技术中的激光投影光源模块消散斑效果不够理想的问题， 进而达到了提 高消散斑效果的目的。 附图说明 构成本申请的一部分的附图用来提供对本发明的进一步理解， 本发明的 示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在 附图中： 图 1是根据本发明实施例的投影***的示意图； 图 2是 居本发明实施例的激光投影光源模块中光束耦合的示意图； 图 3是 居本发明实施例的激光投影光源模块中光束整形的示意图； 图 4是 居本发明的一种实施例的光束在光纤耦合器中耦合的示意图； 图 5 是 居本发明的另一种实施例的光束在光纤耦合器中耦合的示意 图； 以及 图 6是根据本发明另一实施例的对多色光的拓展量进行压缩的示意图。 具体实施方式 需要说明的是， 在不冲突的情况下， 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 实施例 1 图 1是根据本发明实施例的投影***的示意图。 如图 1所示， 该投影***包括激光器光源模块 （图 1中虚线框内） 以及 投影模块。 激光器光源模块包括三个部分： 单色红、 绿、 蓝激光模块， 即， 红光模 块 10、 绿光模块 20和蓝光模块 30, 多色光光学扩展量压缩模块 200, 激光 消相千模块 300。 在激光器光源模块中还可以包括整形匀光模块。 红绿蓝单色激光模块可由单个激光器或者多个激光器组成， 或者也可以 为激光器整列， 进一步地， 激光器整列可以为激光器线阵或者激光器面阵。 激光器可以是半导体激光器和固体倍频激光器。 光源的光学扩展量是光学发 出光束的面积和发散角的乘积。 对于多个激光器组成的单色激光模块， 可以 釆用棱镜组整形、 GRIN透镜整形、 双反射镜整形等方法压缩其光学扩展量。 在上述单色光的光学扩展量压缩技术的基础上， 本发明提供的多色光光 学扩展量压缩方案， 可以同时与消相千模块整合为光源模组。 当红绿蓝激光 模块的输出接口是光纤时， 优选地， 多色光的光学扩展量压缩可由光纤耦合 器实现。 实施例 2 图 2是 居本发明实施例的激光投影光源模块中光束耦合的示意图。 如图 2所示， 红光 A通过耦合器进入绿光光纤与绿光 B合束， 蓝光 C 也通过耦合器进入绿光光纤与绿光 B合束，这时输出光束红绿蓝光 E的面积 仍是绿光光纤的面积， 这与相关技术中将三束光纤困绑起来的方案相比， 输 出光纤是一根， 不是捆绑方案的三根， 输出光束的面积只是原来红绿蓝光束 总面积的三分之一， 光学扩展量得到了压缩。 由于将三根光束耦合为了一根光束， 压缩了光学扩展量， 能够使得光源 的光束有效地为光机接收， 进而能够达到提高消散斑效果的目的。 下面对本发明实施例所提供的激光投影光源模块进行详细介绍。 该激光投影光源模块包括： 第一激光模块， 用于发出第一光束; 第二激光模块， 用于发出第二光束； 第三激光模块， 用于发出第三光束； 以及 光耦合器， 用于接收第一光束、 第二光束和第三光束以及将第一光束、 第二光束和第三光束耦合为第一耦合光束， 其中， 第一激光模块、 第二激光 模块和第三激光模块为不同颜色的激光模块。 在该激光投影光源模块中， 由于通过光耦合器将第一光束、 第二光束和 第三光束三 -光束耦合为了第一耦合光束一才艮光束，因而压缩了光学扩展量， 进而能够达到提高消散斑效果的目的。 上述的第一激光模块、 第二激光模块和第三激光模块可以是分别选自红 色激光模块， 蓝色激光模块和绿色激光模块中之一 （此时， 第一光束、 第二 光束和第三光束中一个为红光、 一个为绿光、一个为蓝光）， 也可以是分别选 自其他的三种颜色之一， 例如， 红黄绿。 上述的激光投影光源模块除了可以包括三种颜色的激光模块， 即， 第一 激光模块、 第二激光模块和第三激光模块之外， 还可以包括四种颜色或者五 种颜色的激光模块， 例如包括红黄绿蓝四种颜色的激光模块。 优选地， 光耦合器包括第一光耦合器和第二光耦合器。 第一光耦合器， 用于接收第一光束和第二光束以及将第一光束和第二光 束耦合为第二耦合光束； 第二光耦合器， 用于接收第二耦合光束和第三光束以及将第二耦合光束 和第三光束 合为第三 合光束。 通过釆用第一光耦合器和第二光耦合器两个光耦合器分别实现对三个光 束的两两耦合， 能够使得耦合的效果更好。 需要说明的是， 也可以釆用一个光耦合器实现三个光束的耦合， 此时， 能够最大程度的简化结构。 优选地， 在第一激光模块、 第二激光模块和第三激光模块中之一或任意 多个为激光器阵列时， 激光投影光源模块还包括阶梯镜。 阶梯镜包括多个反射部， 该多个反射部分别用于反射来自激光器阵列中 各个激光器的光， 其中， 多个反射部中的每个反射部在激光器阵列中各个激 光器的发光面的投影长度分别等于与其对应的发光面的长度并且多个反射部 中的每个反射部与其所对应的单管发光区成 45°夹角。 实施例 3 图 3是 居本发明实施例的激光投影光源模块中光束整形的示意图。 如图 3所示， 原来五个激光器组成的阵列 LD发出的光束直径为 D, 经 阶梯镜 50整形后出射光束为 d,光束直径大大减小，光学扩展量也随之减小。 需要说明的是， 在经阶梯镜 50整形之前， 也可以通过快慢轴准直镜 40 首先对来自五个激光器的光进行快轴准直和慢轴准直。 通过釆用上述的阶梯镜对来自第一激光模块、 第二激光模块或第三激光 模块的光进行整形， 能够消除各个激光器发出的光束之间的间隙， 从而进一 步地压缩了拓展量。 优选地， 第一激光模块、 第二激光模块和第三激光模块的输出接口为光 纤输出接口， 光耦合器为光纤耦合器。 通过釆用光纤将第一激光模块、 第二 激光模块和第三激光模块发出的光传输至光纤耦合器， 能够使得光耦合实现 更力口简单。 优选地， 激光投影光源模块还可以包括多个光纤。 其中： 第一光纤，连接于第一激光模块和光纤耦合器之间，用于传输第一光束； 第二光纤，连接于第二激光模块和光纤耦合器之间，用于传输第二光束； 第三光纤，连接于第三激光模块和光纤耦合器之间，用于传输第三光束； 以及 第四光纤， 连接于光纤耦合器， 用于传输第一耦合光束。 通过釆用三根光纤分别传输耦合之前的光束， 以及利用一根光纤传输耦 合之后的光束， 能够使得简便地实现耦合后的光束截面积显著小于耦合前的 三束光的截面积之和。 优选地， 第一 合光束的截面面积为第一光束、 第二光束、 第三光束的 截面面积的平均值或者等于第一光束、 第二光束、 第三光束中最大的截面面 积， 此时， 进一步优选地， 第一光束、 第二光束、 第三光束和第一 合光束 的截面面积相等。通过使得 合前的各个光束和 合后的光束截面面积相等， 能够使得输出光束的面积只是原来红绿蓝光束总面积的三分之一， 光学扩展 量得到了有效压缩。 优选地， 激光投影光源模块还可以包括： 消相千模块， 连接于光耦合器， 用于接收第一耦合光束。 实施例 4 图 4是 居本发明的一种实施例的光束在光纤耦合器中耦合的示意图； 图 5是根据本发明的另一种实施例的光束在光纤耦合器中耦合的示意图。 光在光纤耦合器中从一根光纤转移到另一根光纤是靠光学模之间的耦合 实现的， 如图 4, 当两根光纤的纤芯靠得足够近， 两光纤中各种的光学场模 式会重叠， 这时一根光纤中的光场会激发另一根光纤的光场， 结果是光在两 才艮光纤中反复耦合。 当有两个不同波长的光分别入射两才艮光纤时， 通过适当 设计耦合器的长度可使两个不同波长的光都到一根光纤。 光纤的纤芯靠近的 方式可是平行的方式 （图 4 ), 也可是楔形的方式 （图 5 )。 本发明提出减小激光光源光学扩展量的方案， 为消相千模块的置入提供 了设计空间， 可加强消散斑的效果。 对比文件公开了多色自由空间合束方案的一个变化。 多色自由空间合束 用得非常普遍， 而我们的方案加了单色光合束压光学扩展量模块和消相千模 块， 更注重于激光光源模块整体的架构。 多色光的光学扩展量压缩可由自由空间光学器件实现。 实施例 5 图 6是根据本发明另一实施例的对多色光的拓展量进行压缩的示意图。 如图 6所示， 绿反红透镜片 80对红光 A是全透， 对绿光 B是全反， 同 样， 蓝反红绿透镜片 90对红光 A和绿光 B是全透， 对蓝光 C是全反。 最后 输出的是红绿蓝合束的光， 输出光束的面积也只是原来红绿蓝光束总面积的 三分之一。 以上方案是以红绿蓝光源为例， 同样也适用与四色 （如红黄绿蓝） 和五 色光源的情形。 从多色光光学扩展量压缩模块 200出来的光束， 进一步进入消相千模块BACKGROUND OF THE INVENTION 1. Field of the Invention 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. The amount of expansion is such that the beam of the source cannot be effectively received by the optomechanical machine. Due to the limitation of the amount of optical expansion, the scattering angle of the dephasing module cannot be too large, and the effect of dissipating the spot is not ideal. SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a laser projection light source module, a beam shaping method thereof, and a laser display device to solve the above problems. In order to achieve the above object, according to an aspect of the invention, 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. In order to achieve the above object, according to another aspect of the present invention, 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. In order to achieve the above object, according to still another aspect of the present invention, a laser display device is provided. The laser display device includes any of the laser projection light source modules provided by the present invention. By the 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. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in 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. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. Embodiment 1 FIG. 1 is a schematic diagram of a projection system according to an embodiment of the present invention. As shown in FIG. 1, 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. For a monochromatic laser module composed of multiple lasers, the optical spread can be compressed by prism group shaping, GRIN lens shaping, and double mirror shaping. Based on the optical expansion amount compression technology of the above monochromatic light, the multi-color optical optical expansion amount compression scheme provided by the present invention can be integrated into the light source module simultaneously with the dephasing thousand module. When the output interface of the red, green and blue laser module is an optical fiber, preferably, the optical expansion of the polychromatic light can be achieved by a fiber coupler. Embodiment 2 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. 2, 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. At this time, 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. Compared with the related technology, 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. In the laser projection light source module, since the first beam, the second beam, and the third beam are coupled by the optical coupler to the first coupled beam, 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. Preferably, the optical coupler comprises a first optical coupler and a second optical coupler. a first optical coupler for receiving the first beam and the second beam and coupling the first beam and the second beam into a second coupled beam; a second optical coupler for receiving the second coupled beam and the third beam and The second coupled beam and the third beam are combined into a third combined beam. By coupling the two optical couplers of the first optical coupler and the second optical coupler respectively, the coupling of the three beams can be achieved, and the coupling effect can be better. It should be noted that the coupling of three beams can also be realized by using one optical coupler, and at this time, the structure can be simplified to the utmost. Preferably, when one or any of the first laser module, the second laser module and the third laser module is a laser array, 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. Embodiment 3 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. 3, 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. It should be noted that 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. By shaping the light from the first laser module, the second laser module, or the third laser module by using the above-described step mirror, the gap between the light beams emitted from the respective lasers can be eliminated, thereby further compressing the amount of expansion. Preferably, the output interfaces of the first laser module, the second laser module and the third laser module are optical fiber output interfaces, and the optical coupler is a fiber coupler. By transmitting the light emitted by the first laser module, the second laser module, and the third laser module to the fiber coupler by using the optical fiber, the optical coupling can be made more powerful. Preferably, the laser projection light source module may further include a plurality of optical fibers. Wherein: 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. By using three optical fibers to separately transmit the beams before coupling, and using one fiber to transmit the coupled beams, it is possible to easily realize that the cross-sectional area of the coupled beams is significantly smaller than the sum of the cross-sectional areas of the three beams before coupling. Preferably, 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. By making the cross-sectional areas of the combined beams and the combined beams 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. Preferably, 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; and 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. As shown in 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. When two different wavelengths of light are incident on the two fibers, two different wavelengths of light can be transmitted to one fiber by appropriately designing the length of the coupler. The core of the fiber can be approached in a parallel manner (Fig. 4) or in a wedge shape (Fig. 5). 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. The optical expansion of polychromatic light can be achieved by free-space optics. Embodiment 5 FIG. 6 is a schematic diagram of compression of an amount of expansion of polychromatic light according to another embodiment of the present invention. As shown in FIG. 6, the green anti-red lens sheet 80 is fully transparent to the red light A and all-inverted to the green light B. Similarly, 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. At last 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
300 , 从消相千模块 300 出来的光束， 最后进入投影光机的匀光整形照明系 统和投影模块 500。投影光机的光学扩展量一般是由微投器件（ DLP , LCOS ) 和投影镜头决定的。 如果光源的光学扩展量超过光机的光学扩展量， 光源的 光束就不会有效地收集。 如果不通过图中的多色光学扩展量压缩模块 200 , 从单色红绿蓝激光模块出来的光束经消散斑后其光学扩展量可能会大于光机 的光学扩展量， 特别是， 消散斑作用越强的模块， 对光学扩展量的增加越大。 比如， 由红绿蓝输出光纤捆绑起来的光纤束， 其直径为 2.5mm, 发散角为 12 度。假设有一孔径为 5mm消散斑随机相位片，原始的光束经扩束后为 5.0mm 直径， 6度发散角的光束， 如消散斑随机相位片自身的散射角为 20度， 则光 束的光学扩展量为 12 mm1 ' sr。 对釆用 0.6吋 DLP和 F#/3.0的光机， 其光 学扩展量为 5 mm2 - sr , 光源的光不能有效地为光机接收。 如釆用多色光学 扩散量压缩， 这由一根光纤同时输出红绿蓝光， 光源的光学扩展量为原来的 1/3 , 如果再结合图 3或其他的单色光光学扩展量压缩技术， 将光源的光学扩 展量压缩为原来的 1/9 , 等效地讲， 入射到 5mm消散斑随机相位片的光束可 由原来的 6度发散角压缩到 2度发散角， 这时从消相千模块出射的光束的光 学扩展量为 8.5 2 与光机相配， 光源的光得到有效接收。 实施例 6 本发明实施例还提供了一种激光投影光源模块中激光光束的整形方法， 该激光投影光源模块中激光光束的整形方法包括： 步骤 S 101 , 接收来自第一激光模块的第一光束； 步骤 S 102 , 接收来自第二激光模块的第二光束； 步骤 S 103 , 接收来自第三激光模块的第三光束； 以及 步骤 S 104, 将所述第一光束、 所述第二光束和所述第三光束耦合为第一 耦合光束， 其中， 所述第一激光模块、 所述第二激光模块和所述第三激光模块为不 同颜色的激光模块。 上述的第一激光模块、 第二激光模块和第三激光模块可以是分别选自红 色激光模块， 蓝色激光模块和绿色激光模块中之一 （此时， 第一光束、 第二 光束和第三光束中一个为红光、 一个为绿光、一个为蓝光）， 也可以是分别选 自其他的三种颜色之一， 例如， 红黄绿。 上述的激光投影光源模块除了可以包括三种颜色的激光模块， 即， 第一 激光模块、 第二激光模块和第三激光模块之外， 还可以包括四种颜色或者五 种颜色的激光模块， 例如包括红黄绿蓝四种颜色的激光模块。 优选地， 将所述第一光束、 所述第二光束和所述第三光束耦合为第一耦 合光束包括： 将所述第一光束和所述第二光束耦合为第二耦合光束； 以及将 所述第二耦合光束和所述第三光束耦合为第三耦合光束。 本发明还提供了一种激光显示设备， 该激光显示设备可以包括本发明任 一实施例所提供的激光投影光源模块。 该激光显示设备可以为投影机或者激 光电视等。 从以上的描述中， 可以看出， 本发明能够提高消散斑的效果。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。 300, the light beam coming out of the dephasing module 300, and finally entering the homogenizing shaping illumination system and the projection module 500 of the projection machine. 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. For example, 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. Suppose there is a random phase plate with a 5mm aperture and a speckle pattern. The original beam is expanded to a diameter of 5.0mm and a divergence angle of 6 degrees. For example, the scattering angle of the random phase plate itself is 20 degrees, then the optical expansion of the beam. For 12 mm 1 'sr. For optical machines with 0.6吋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. For example, if the multi-color optical diffusion amount is used for compression, the red-green blue light is simultaneously output from one optical fiber, and the optical expansion of the light source is 1/3 of the original. If combined with FIG. 3 or other monochromatic optical optical expansion compression technology, The optical expansion of the light source is compressed to 1/9 of the original. Equivalently, the beam incident on the 5mm scatter random phase plate can be compressed from the original 6 degree divergence angle to the 2 degree divergence angle. The optical spread of the outgoing beam is 8.5 2 matched with the optical machine, and the light of the light source is effectively received. Embodiment 6 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. Advantageously, 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.

Claims

权 利 要 求 书 Claim
1. 一种激光投影光源模块， 其特征在于包括： A laser projection light source module, comprising:
第一激光模块， 用于发出第一光束；  a first laser module, configured to emit a first light beam;
第二激光模块， 用于发出第二光束；  a second laser module, configured to emit a second light beam;
第三激光模块， 用于发出第三光束； 以及  a third laser module for emitting a third beam;
光耦合器， 用于接收所述第一光束、 所述第二光束和所述第三光 束以及将所述第一光束、 所述第二光束和所述第三光束耦合为第一耦 合光束，  An optical coupler, configured to receive the first light beam, the second light beam, and the third light beam, and couple the first light beam, the second light beam, and the third light beam into a first coupled light beam,
其中， 所述第一激光模块、 所述第二激光模块和所述第三激光模 块为不同颜色的激光模块。  The first laser module, the second laser module, and the third laser module are laser modules of different colors.
2. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 所述光耦合 器包括： 2. The laser projection light source module according to claim 1, wherein the optical coupler comprises:
第一光耦合器， 用于接收所述第一光束和所述第二光束以及将所 述第一光束和所述第二光束耦合为第二耦合光束； 以及  a first optical coupler for receiving the first beam and the second beam and coupling the first beam and the second beam to a second coupled beam;
第二光耦合器， 用于接收所述第二耦合光束和所述第三光束以及 将所述第二耦合光束和所述第三光束耦合为第三耦合光束。  a second optical coupler for receiving the second coupled beam and the third beam and coupling the second coupled beam and the third beam to a third coupled beam.
3. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 在所述第一 激光模块、 所述第二激光模块和所述第三激光模块中之一或任意多个 为激光器阵列时， 所述激光投影光源模块还包括： The laser projection light source module according to claim 1, wherein one or any one of the first laser module, the second laser module, and the third laser module is a laser array The laser projection light source module further includes:
阶梯镜， 包括多个反射部， 分别用于反射来自所述激光器阵列中 各个激光器的光， 其中， 所述多个反射部中的每个反射部在所述激光 器阵列中各个激光器的发光面的投影长度分别等于与其对应的发光面 的长度并且所述多个反射部中的每个反射部与其所对应的单管发光区 成 45°夹角。  a step mirror comprising a plurality of reflecting portions for respectively reflecting light from respective lasers in the laser array, wherein each of the plurality of reflecting portions is on a light emitting surface of each laser in the laser array The projection lengths are respectively equal to the length of the corresponding light-emitting surface and each of the plurality of reflective portions is at an angle of 45° to the corresponding single-tube light-emitting region.
4. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 所述第一激 光模块、 所述第二激光模块和所述第三激光模块的输出接口为光纤输 出接口， 所述光耦合器为光纤耦合器。 The laser projection light source module according to claim 1, wherein an output interface of the first laser module, the second laser module, and the third laser module is an optical fiber output interface, and the optical coupling The device is a fiber coupler.
5. 根据权利要求 4所述的激光投影光源模块， 其特征在于还包括： 第一光纤， 连接于所述第一激光模块和所述光纤耦合器之间， 用 于传输所述第一光束； The laser projection light source module according to claim 4, further comprising: a first optical fiber connected between the first laser module and the fiber coupler for transmitting the first light beam;
第二光纤， 连接于所述第二激光模块和所述光纤耦合器之间， 用 于传输所述第二光束；  a second optical fiber connected between the second laser module and the fiber coupler for transmitting the second light beam;
第三光纤， 连接于所述第三激光模块和所述光纤耦合器之间， 用 于传输所述第三光束； 以及  a third optical fiber connected between the third laser module and the fiber coupler for transmitting the third light beam;
第四光纤， 连接于所述光纤耦合器， 用于传输所述第一耦合光束。  A fourth optical fiber is coupled to the fiber coupler for transmitting the first coupled beam.
6. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 所述第一耦 合光束的截面面积为所述第一光束、 所述第二光束、 所述第三光束的 截面面积的平均值或者等于所述第一光束、 所述第二光束、 所述第三 光束中最大的截面面积。 The laser projection light source module according to claim 1, wherein a cross-sectional area of the first coupled beam is an average of a cross-sectional area of the first beam, the second beam, and the third beam The value is equal to or equal to the largest cross-sectional area of the first beam, the second beam, and the third beam.
7. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 所述第一耦 合光束的截面面积等于所述第一光束、 所述第二光束、 所述第三光束 中最大的截面面积。 The laser projection light source module according to claim 1, wherein a cross-sectional area of the first coupled beam is equal to a maximum cross-sectional area of the first beam, the second beam, and the third beam .
8. 根据权利要求 6或 7所述的激光投影光源模块， 其特征在于， 所述第 一光束、 所述第二光束、 所述第三光束和所述第一耦合光束的截面面 积相等。 The laser projection light source module according to claim 6 or 7, wherein the first light beam, the second light beam, the third light beam, and the first coupled light beam have equal cross-sectional areas.
9. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 所述第一耦 合光束的截面面积等于所述第一光束、 所述第二光束、 所述第三光束 中最大的截面面积。 9 . The laser projection light source module according to claim 1 , wherein a cross-sectional area of the first coupled beam is equal to a largest cross-sectional area of the first beam, the second beam, and the third beam .
10. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 所述第一激 光模块、 所述第二激光模块和所述第三激光模块分别选自红色激光模 块， 蓝色激光模块和绿色激光模块中之一。 The laser projection light source module according to claim 1, 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 One of the green laser modules.
11. 根据权利要求 1所述的激光投影光源模块， 其特征在于， 还包括： 快慢轴准直镜， 分别与所述第一激光模块、 所述第二激光模块和 所述第三激光模块相邻设置， 用于分别对所述第一光束、 所述第二光 束和所述第三光束进行准直。 11. The laser projection light source module according to claim 1, further comprising: a fast and slow axis collimating mirror, respectively corresponding to the first laser module, the second laser module, and the third laser module The adjacent arrangement is configured to collimate the first beam, the second beam and the third beam, respectively.
12. 根据权利要求 1所述的激光投影光源模块， 其特征在于还包括： 消相 千模块， 连接于所述光耦合器， 用于接收所述第一耦合光束。 12. The laser projection light source module of claim 1, further comprising: a phase depletion module coupled to the optocoupler for receiving the first coupled beam.
13. —种激光投影光源模块的光束整形方法， 其特征在于包括： 13. A beam shaping method for a laser projection light source module, comprising:
接收来自第一激光模块的第一光束；  Receiving a first light beam from the first laser module;
接收来自第二激光模块的第二光束；  Receiving a second light beam from the second laser module;
接收来自第三激光模块的第三光束； 以及  Receiving a third beam from the third laser module;
将所述第一光束、 所述第二光束和所述第三光束耦合为第一耦合 光束，  Coupling the first beam, the second beam, and the third beam into a first coupled beam,
其中， 所述第一激光模块、 所述第二激光模块和所述第三激光模 块为不同颜色的激光模块。  The first laser module, the second laser module, and the third laser module are laser modules of different colors.
14. 根据权利要求 13所述的方法， 其特征在于， 将所述第一光束、 所述第 二光束和所述第三光束耦合为第一耦合光束包括： 14. The method of claim 13, wherein coupling the first beam, the second beam, and the third beam to a first coupled beam comprises:
将所述第一光束和所述第二光束耦合为第二耦合光束； 以及 将所述第二耦合光束和所述第三光束耦合为第三耦合光束。  Coupling the first beam and the second beam into a second coupled beam; and coupling the second coupled beam and the third beam into a third coupled beam.
15. —种激光显示设备，其特征在于包括权利要求 1至 12中任一项所述的 激光投影光源模块。 A laser display device comprising the laser projection light source module according to any one of claims 1 to 12.
PCT/CN2011/072289 2011-03-30 2011-03-30 Laser projection light source module and beam shaping method thereof as well as laser display equipment WO2012129785A1 (en)

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