WO2012129788A1 - Laser projection light source module and projection apparatus - Google Patents

Laser projection light source module and projection apparatus Download PDF

Info

Publication number
WO2012129788A1
WO2012129788A1 PCT/CN2011/072293 CN2011072293W WO2012129788A1 WO 2012129788 A1 WO2012129788 A1 WO 2012129788A1 CN 2011072293 W CN2011072293 W CN 2011072293W WO 2012129788 A1 WO2012129788 A1 WO 2012129788A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
module
light source
array
light
Prior art date
Application number
PCT/CN2011/072293
Other languages
French (fr)
Chinese (zh)
Inventor
李巍
闫国枫
陈昱
刘卫东
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/CN2011/072293 priority Critical patent/WO2012129788A1/en
Publication of WO2012129788A1 publication Critical patent/WO2012129788A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3161—Modulator illumination systems using 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
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • 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
    • G03B33/10—Simultaneous recording or projection
    • G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3164—Modulator illumination systems using multiple light sources

Definitions

  • the present invention relates to the field of optics, and in particular to a laser projection light source module and a projector.
  • BACKGROUND OF THE INVENTION Laser display technology has the characteristics of large color gamut, low power consumption, and the like, and has begun to be applied in television, micro projection, commercial and entertainment systems.
  • the laser projection light source usually uses the following method: First, a 4 bar laser is coupled into the fiber, and then a 4 bar fiber is used as a light source output. This method is complicated in structure because it requires the use of an optical fiber, and the optical fiber and the laser need to be combined.
  • the main object of the present invention is to provide a laser projection light source module and a projector to solve the problem.
  • a laser projection light source module is provided.
  • the laser projection light source module includes: a first laser module including a first laser array; a second laser module including a second laser array; a third laser module including a third laser array; and an RGB light combining mirror for The light emitted by the laser module, the second laser module and the third laser module is combined and output, and the combined beam is output, wherein one of the first laser module, the second laser module and the third laser module is a red laser module One is a blue laser module, and the other is a green laser module. Accordingly, one of the first laser array, the second laser array, and the third laser array is a red laser array, one is a green laser array, and the other is a blue laser array. .
  • a projector includes the laser projection light source module provided by the present invention.
  • a laser projection light source module comprising: a first laser module comprising a first laser array; a second laser module comprising a second laser array; a third laser module comprising a third laser array; and RGB A light combining mirror for combining the light emitted by the red laser module, the green laser module, and the blue laser module, and outputting the combined beam, by combining the light emitted by each laser module using the RGB light combining mirror
  • the invention eliminates the need to use the optical fiber, thereby solving the problem that the structure of the laser projection light source module in the prior art is relatively complicated and the utilization rate of the light source is relatively low, thereby achieving the effect of simplifying the structure of the laser projection light source module and improving the utilization ratio of the light source.
  • FIG. 1 is a schematic view of a laser projection light source module according to a first embodiment of the present invention
  • FIG. 2a is a side view of a first embodiment of a laser array according to an embodiment of the present invention
  • Figure 2c is a side elevational view of a second embodiment of a laser array in accordance with an embodiment of the present invention
  • Figure 2d is a side view of a second embodiment of a laser array in accordance with an embodiment of the present invention
  • 2 is a front view of a second embodiment of a laser array according to an embodiment of the present invention
  • FIG. 1 is a schematic view of a laser projection light source module according to a first embodiment of the present invention
  • FIG. 2a is a side view of a first embodiment of a laser array according to an embodiment of the present invention
  • Figure 2c is a side elevational view of a second embodiment of a laser array in accordance with an embodiment of the present invention
  • Figure 2d is a side view of a second embodiment of a laser array in accord
  • FIG. 3 is a schematic diagram of a laser projection light source module according to a second embodiment of the present invention
  • 4 is a schematic view of a green light solid state laser array according to an embodiment of the present invention
  • FIG. 5 is a schematic view of a projector according to a first embodiment of the present invention
  • FIG. 6 is a schematic view of a projector according to a second embodiment of the present invention
  • 7 is a schematic diagram of a laser projection light source module according to a third embodiment of the present invention
  • FIG. 8 is a schematic diagram of a laser projection light source module according to a fourth embodiment of the present invention
  • FIG. 9 is a fifth embodiment of the present invention.
  • the laser projection light source module includes: a first laser module including a first laser array; a second laser module including a second laser array; and a third laser module including a third laser array;
  • An RGB light combining mirror configured to perform a beam combining process on the light emitted by the first laser module, the second laser module, and the third laser module, and output a beam after the combining, wherein the first laser module, the second laser module, and the first One of the three laser modules is a red laser module, one is a blue laser module, and the other is a green laser module. Accordingly, one of the first laser array, the second laser array, and the third laser array is a red laser array, and one is green. A laser array, one for the blue laser array.
  • the first laser module, the second laser module, and the third laser module are each selected from one of a red laser module, a blue laser module, and a green laser module, and the first laser array, the second laser array, and The third laser array is each selected from the group consisting of a red laser array, a green laser array, and a blue laser array, and each is different.
  • the light emitted by the first laser module, the second laser module, and the third laser module is combined by the RGB illuminating mirror, and the combined beam is output, for example, by RGB combining.
  • the transmission and reflection of the light mirror combines the light emitted by the first laser module, the second laser module, and the third laser module, thereby eliminating the need to use an optical fiber, thereby simplifying the structure.
  • the RGB light combining mirror may include a first RGB light combining mirror and a second RGB light combining mirror.
  • 1 is a schematic view of a laser projection light source module in accordance with a first embodiment of the present invention. As shown in FIG.
  • a first RGB light combining mirror 5 is disposed between the first laser module 1 and the second laser module 2 for combining the transmitted light of the first laser module and the reflected light of the second laser module. , to obtain the first combined beam.
  • the second RGB illuminating mirror 6 is disposed in parallel with the first RGB illuminating mirror 5 and is located between the first RGB illuminating mirror 5 and the third laser module 3 for transmitting the transmitted light of the first combined beam and the third laser The reflected light of the module is combined to obtain a second combined beam.
  • the first RGB condensing mirror 5 and the second RGB condensing mirror 6 are combined and light-received to transmit light emitted from the two laser modules, thereby enabling easy integration. Light processing.
  • the first RGB light combining mirror and the second RGB light combining mirror described above may both be dichroic mirrors.
  • the working principle of the laser projection light source module will be described below with reference to FIG. 1.
  • the laser module with a dominant wavelength of ⁇ , 2 a laser module with a main wavelength of ⁇ 2, 3 a laser module with a main wavelength of ⁇ 3, and a laser with a dominant wavelength of ⁇
  • the dichroic mirror 5 (the main purpose of the dichroic mirror 1 is to transmit a laser having a dominant wavelength of ⁇ , and a laser having a dominant wavelength of ⁇ 2 ), and a laser having a dominant wavelength of ⁇ 2 is reflected by the dichroic mirror 5 .
  • the laser having a dominant wavelength of ⁇ is combined with the laser having a dominant wavelength of ⁇ 2, and passes through the dichroic mirror 6 (the main purpose of the dichroic mirror 1 is to transmit laser light having a dominant wavelength of ⁇ 1, ⁇ 2, and reflect the dominant wavelength.
  • the laser light of ⁇ 3 is transmitted, and the laser light having a dominant wavelength of ⁇ 3 is reflected by the dichroic mirror 6, so that the laser light having a dominant wavelength of ⁇ ⁇ , the laser light having a dominant wavelength of ⁇ 2 and the laser light having a dominant wavelength of ⁇ 3 are combined into one light output.
  • the high-brightness and high-power laser projection light source module improves the utilization rate of the laser light source, reduces parts, effectively reduces the volume of the light source, simplifies the process, and saves cost.
  • ⁇ 1, ⁇ 2, and ⁇ 3 can arbitrarily correspond to the R, G, and B beams.
  • each of the semiconductor laser arrays is composed of R, G, and B laser modules, and then combined by RGB light combining mirrors and output.
  • the laser arrays in the laser module 1, the laser module 2, and the laser module 3 output laser light, and the light is merged through a dichroic mirror.
  • the semiconductor laser matrix array can implement a semiconductor laser array (as shown in Figures 2a and 2b;) to achieve the desired brightness.
  • 2a and 2b can be a general schematic diagram of a monochromatic laser module composed of a semiconductor laser array having a wavelength of ⁇ 1, ⁇ 2 or ⁇ 3, each array having a single dominant wavelength.
  • Semiconductor laser matrix array Implement MxN (M, N>1) semiconductor laser arrays. It consists mainly of a semiconductor laser and a collimating mirror 4 - a corresponding array. Since the divergence angle of the semiconductor laser is too large, the collimating mirror is mainly used to collimate the divergent beam of the semiconductor laser.
  • the semiconductor laser is passed through the collimating mirror and becomes a nearly parallel beam, which is beneficial to the utilization of the laser.
  • the solution laser also includes a laser with a micro-collimator mirror, which is a microlens directly bonded to the semiconductor laser to collimate the laser.
  • a collimating mirror as shown in Figures 2c and 2d;
  • the aberration of the microlens can be overcome.
  • 2c and 2d are schematic views of a monochromatic laser module of a semiconductor laser array with a collimating mirror having a dominant wavelength of ⁇ 1, ⁇ 2 or ⁇ 3.
  • a collimating mirror 4 is bonded to the front of the semiconductor laser.
  • the semiconductor laser matrix array can realize ⁇ ( ⁇ , ⁇ ⁇ 1 ) semiconductor laser arrays. It is mainly composed of a self-contained micro-collimator semiconductor laser 7 and a collimating mirror 4 - a corresponding array. Although the semiconductor laser has its own micro-collimator lens, the alignment lens still cannot collimate the beam 4 due to some mechanical tolerances and aberrations. Therefore, it is preferable to collimate the semiconductor with a collimating mirror. The diverging beam of the laser. The semiconductor laser passes through the collimating mirror and becomes a nearly parallel beam, which is beneficial to the utilization of the laser.
  • 2e is a schematic diagram of a third embodiment of a laser array in accordance with an embodiment of the present invention.
  • a monochromatic laser module of a semiconductor laser array with reduced optical aperture scheme is added. Since each semiconductor laser is collimated by the collimating mirror, there is a certain gap between the collimated and other collimated beams of the array, which has an effect on the energy utilization rate, thereby increasing the step prism 8 which can reduce the gap between each beam. Or an optical prism.
  • the laser array in this embodiment further includes a laser module (shown in FIG. 2e) in which the laser first passes through the collimating lens and then through the reduced etendue module, and the reduced etend amount device may include a mirror array. Style, prism array.
  • FIG. 3 is a schematic illustration of a laser projection light source module in accordance with a second embodiment of the present invention.
  • the green laser uses a solid-state laser. Since the divergence angle of the solid-state laser is very small, the green light divergence angle is increased and the speckle is reduced by using a rotatable diffusing sheet at the exit of the green laser.
  • the rectangular array of the semiconductor laser it can be the same as the embodiment of FIG. 2a to FIG. 2e, but in the case of the green solid-state laser, preferably, the diffusion sheet 9 is used, and the scattering sheet 9 is rotated by the rotating motor 11, as shown in FIG. Show.
  • the filters are then passed through the filters of the respective colors of light.
  • the green solid-state laser uses a circular semiconductor laser array to achieve the desired brightness. This The method is simple in process, very few devices are used, suitable for mass production, and the utilization efficiency of the light source is improved. And it can play a certain role in dissipating the scatter on the green solid-state laser.
  • the diffusion sheet of this embodiment may further include a diffusion sheet that is not rotated by a motor. As shown in Fig. 3, the laser with a dominant wavelength of ⁇ ⁇ passes through the dichroic mirror 1 (the main purpose of the dichroic mirror 1 is to transmit a laser with a dominant wavelength of ⁇ , and reflect a laser with a dominant wavelength of ⁇ 2 ).
  • the laser light having a wavelength of ⁇ 2 is reflected by the dichroic mirror 5, so that the laser light having a dominant wavelength of ⁇ ⁇ and the laser light having a dominant wavelength of ⁇ 2 are combined into a bundle, and passed through the dichroic mirror 6 (the main purpose of the dichroic mirror 5 is to A laser having a dominant wavelength of ⁇ 1 and ⁇ 2 and a laser having a dominant wavelength of ⁇ 3 are transmitted, and a laser having a dominant wavelength of ⁇ 3 is reflected by the dichroic mirror 6, such that a laser having a dominant wavelength of ⁇ ⁇ and a laser having a dominant wavelength of ⁇ 2 are The laser light having a dominant wavelength of ⁇ 3 is combined into a light output.
  • This module is our high-brightness and high-power laser projection light source module.
  • This module improves the utilization of laser light source, reduces parts, effectively reduces the volume of the light source, simplifies the process and saves cost.
  • ⁇ 1, ⁇ 2, and ⁇ 3 can arbitrarily correspond to the R, G, and B beams.
  • FIG. 4 a schematic diagram of a monochromatic laser module of a solid-state laser array having a dominant wavelength of ⁇ 1, ⁇ 2 or ⁇ 3.
  • the solid-state laser has a small divergence angle, and the solid-state laser 10 emits laser light into the rotating diffusing sheet 9, and the laser beam has a large divergence angle, and passes through the collimator lens 4 to become a parallel beam.
  • FIG. 5 is a schematic diagram of the laser projection light source module 12 directly connected to the optical machine.
  • the laser light source of the laser projection light source module directly enters the fly-eye lens 13 of the optomechanical system, wherein a fly-eye lens 13 is further disposed at the light exiting portion of the laser projection light source module, and enters the prism 17 through the condensing mirror 14 and is reflected onto the display element 16 for display. The element is reflected, and the image is projected through the projection lens 15 through the prism 17.
  • FIG. 6 is a schematic diagram of another embodiment of the laser projection light source module 12 directly connected to the optical machine.
  • the laser light source of the laser projection light source module 12 directly enters the light bar 18 of the optical system, wherein a light bar 18 is further disposed at the light exiting of the laser projection light source module, and enters the prism 17 through the condensing mirror 14 and is reflected onto the display element 16 through The display element 16 reflects, passes through the prism 17, and projects an image through the projection lens 15.
  • the RGB light combining mirror may also include a third RGB light combining mirror 19, a fourth RGB light combining mirror, and a fifth RGB light combining mirror.
  • Figure 7 is a schematic illustration of a laser projection light source module in accordance with a third embodiment of the present invention. As shown in FIG. 7, a third RGB illuminating mirror 19 is configured to reflect light from the first laser module to obtain first reflected light.
  • the fourth RGB illuminating mirror may be disposed in parallel with the third RGB illuminating mirror 19 in the same manner as the first RGB illuminating mirror 5, for receiving the first reflected light, and reflecting the light from the second laser module and A reflected light and light of the second laser module are combined to obtain a third combined beam.
  • the fifth RGB illuminating mirror may be the same as the first RGB illuminating mirror 6 described above, and disposed in parallel with the third RGB illuminating mirror for receiving the third combined beam, reflecting the light from the third laser module and the third The combined light beam and the light of the third laser module are combined to obtain a fourth combined light beam, wherein the first laser module 1, the second laser module 2 and the third laser module 3 are disposed on the same plane.
  • the light combining processing can be easily realized by the reflection of the third RGB condensing mirror, the transmission and reflection of the fourth RGB fused mirror, and the transmission and reflection of the fifth RGB condensing mirror, and
  • the first laser module, the second laser module, and the third laser module can be disposed on the same plane, thereby further simplifying the structure. As shown in FIG.
  • the laser light having a dominant wavelength of ⁇ is reflected by the mirror 19 and transmitted through the dichroic mirror 5, and the laser light having a dominant wavelength of ⁇ 2 is reflected by the dichroic mirror 5, so that the laser light having a dominant wavelength of ⁇ ⁇
  • the laser light having a dominant wavelength of ⁇ 2 is combined into a bundle, and transmitted through the dichroic mirror 6, and the laser light having a dominant wavelength of ⁇ 3 is reflected by the dichroic mirror 6, so that the laser having a dominant wavelength of ⁇ and the laser having a dominant wavelength of ⁇ 2 and the main
  • the laser light having a wavelength of ⁇ 3 is combined into a light output.
  • This module is also our high brightness and high power laser projection light source module.
  • the third RGB illuminating mirror, the fourth RGB illuminating mirror and the fifth RGB illuminating mirror may all be dichroic mirrors.
  • the third RGB illuminating mirror is a mirror, thereby saving cost.
  • any one or more of the first laser array, the second laser array, and the third laser array are semiconductor laser arrays.
  • the laser projection light source module further includes: a collimating mirror disposed on the light emitting sides of the first laser array, the second laser array, and the third laser array, respectively.
  • each of the first laser array, the second laser array, and the third laser array is a semiconductor laser with a micro-collimator.
  • Figure 8 is a schematic view of a laser projection light source module according to a fourth embodiment of the present invention
  • Figure 9 is a schematic view of a laser projection light source module according to a fifth embodiment of the present invention.
  • 20 (a) is a dichroic mirror for transmitting a laser having a dominant wavelength of ⁇ , and reflecting a laser having a dominant wavelength of ⁇ 3
  • 20 (b) is a dichroic mirror for transmitting
  • a laser with a dominant wavelength of ⁇ 1 and ⁇ 3 reflects a laser with a dominant wavelength of ⁇ 2
  • 20 (c) is a dichroic mirror that transmits a laser with a dominant wavelength of ⁇ 1 and ⁇ 2 and reflects a laser with a dominant wavelength of ⁇ 3
  • 20 ( d) is a dichroic mirror 6 for transmitting a laser having a dominant wavelength of ⁇ ⁇ and reflecting a dominant wavelength of ⁇ 2 .
  • the X-ray film is mainly composed of 20 (a), 20 (b), 20 (c), 20 (d) four-piece dichroic films.
  • Laser with dominant wavelength ⁇ transmitted through 20 (a), 20 (b), 20 ( c ), 20 ( d); laser with dominant wavelength ⁇ 2 , passing through dichroic mirror 20 (d), 20 (b) Reflection, transmitted through 20 (c); laser with a dominant wavelength of ⁇ 3, reflected by dichroic mirrors 20 (a), 20 (c), transmitted through 20 (b).
  • the laser light having a dominant wavelength of ⁇ ⁇ , the laser light having a dominant wavelength of ⁇ 2 , and the laser light having a dominant wavelength of ⁇ 3 are combined into one light output. As shown in Fig.
  • 21 (a) is a prismatic dichroic film for transmitting laser light having a dominant wavelength of ⁇ , and reflecting a laser light having a dominant wavelength of ⁇ 3
  • 21 (b) is a prismatic dichroic film for transmitting through the main Lasers with wavelengths ⁇ 1 and ⁇ 3 reflect laser light with a dominant wavelength of ⁇ 2
  • 21 (c) is a prismatic dichroic film that transmits laser light with dominant wavelengths ⁇ 1 and ⁇ 2 and reflects laser light with a dominant wavelength of ⁇ 3, 21 (d It is also a prismatic dipole 4 for transmitting a laser having a dominant wavelength of ⁇ ⁇ and a dominant wavelength of ⁇ 2 .
  • the X-combined prism is mainly composed of four prisms, 21 (a), 21 (b), 21 (c), 21 (d) and the other is J prism bonding surface.
  • Laser with a dominant wavelength of ⁇ transmitted through 21 (a), 21 (b), 21 (c), 21 (d); laser with a dominant wavelength of ⁇ 2, passing through dichroic mirrors 21 (d), 21 (b) Reflection, 21 (c) transmission; laser with a dominant wavelength of ⁇ 3, reflected by dichroic mirrors 21 (a), 21 (c), transmitted through 21 (b).
  • a laser having a dominant wavelength of ⁇ ⁇ , a laser having a dominant wavelength of ⁇ 2 , and a laser having a dominant wavelength of ⁇ 3 are combined into one light output.
  • a high brightness and high power laser projection light source module is provided. From the above description, it can be seen that the present invention can simplify the structure of the laser projection light source module and improve the utilization of the light source.
  • 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.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)

Abstract

A laser projection light source module and a projection apparatus are provided. The laser projection light source module includes: a first laser module which includes a first laser array, a second laser module which includes a second laser array, a third laser module which includes a third laser array and a RGB combining mirror which is used to combine the beams from a red laser module, a green laser module and a blue laser module and output the beam. Through the invention, the structure of the laser projection light source module can be simplified and the light source use efficiency can be improved.

Description

激光投影光源^：及投影机 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投影机。 背景技术 激光显示技术具有大色域、 低能耗等特点， 并开始在电视、 微型投影、 商用和娱乐***中应用。 目前激光投影光源通常釆用以下方法： 先 4巴激光耦合入光纤， 然后 4巴光纤作为光源输出端。 该方法由于需要使用光纤， 并且需要将光纤和激光器进行輛合， 因而结 构复杂， 而且由于激光投影模块中还要使用准直透镜， 耦合透镜等许多光学 器件， 各器件间的配合固定非常繁瑣， 激光在各器件间传输过程中能量浪费 严重。 造成激光光源体积大， 效率低、 成本高等问题。 发明内容 针对现有技术中激光投影光源模块结构比较复杂， 且光源利用率比较低 的问题而提出本发明， 为此， 本发明的主要目的在于提供一种激光投影光源 模块及投影机， 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， 包括第一激光器阵列； 第 二激光模块， 包括第二激光器阵列； 第三激光模块， 包括第三激光器阵列； 以及 RGB 合光镜， 用于对第一激光模块、 第二激光模块和第三激光模块发 出的光进行合束处理以及输出合束之后的光束， 其中， 第一激光模块、 第二 激光模块和第三激光模块中一个为红色激光模块， 一个为蓝色激光模块， 一 个为绿色激光模块， 相应地， 第一激光器阵列、 第二激光器阵列和第三激光 器阵列中一个为红色激光器阵列， 一个为绿色激光器阵列， 一个为蓝色激光 器阵列。 为了实现上述目的， 根据本发明的另一方面， 提供了一种投影机。 该投 影机包括本发明所提供的激光投影光源模块。 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， 包括第一激光器阵列； 第二激光模块， 包括第二激光器阵列； 第三激光模块， 包括第三激光器阵列； 以及 RGB 合光镜， 用于对红色激光模块、 绿色激光 模块和蓝色激光模块发出的光进行合束处理以及输出合束之后的光束， 由于 使用 RGB 合光镜对各个激光模块发出的光进行合束处理， 因而无需再使用 光纤， 从而解决了现有技术中激光投影光源模块结构比较复杂， 且光源利用 率比较低的问题， 进而达到了简化激光投影光源模块结构、 提高光源利用率 的效果。 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 居本发明第一实施例的激光投影光源模块的示意图； 图 2a是才艮据本发明实施例的激光器阵列的第一实施例的侧视图； 图 2b是才艮据本发明实施例的激光器阵列的第一实施例的主视图； 图 2c是才艮据本发明实施例的激光器阵列的第二实施例的侧视图； 图 2d是才艮据本发明实施例的激光器阵列的第二实施例的主视图； 图 2e是才艮据本发明实施例的激光器阵列的第三实施例的示意图； 图 3是 居本发明第二实施例的激光投影光源模块的示意图； 图 4是 居本发明实施例的绿光固体激光器阵列的示意图； 图 5是根据本发明第一实施例的投影机的示意图； 图 6是根据本发明第二实施例的投影机的示意图； 图 7是 居本发明第三实施例的激光投影光源模块的示意图； 图 8是 居本发明第四实施例的激光投影光源模块的示意图； 以及 图 9是 居本发明第五实施例的激光投影光源模块的示意图。 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。 本发明实施例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， 包括第一激光器阵列； 第二激光模块， 包括第二激光器阵列； 第三激光模块， 包括第三激光器阵列； 以及 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 and a projector. BACKGROUND OF THE INVENTION Laser display technology has the characteristics of large color gamut, low power consumption, and the like, and has begun to be applied in television, micro projection, commercial and entertainment systems. At present, the laser projection light source usually uses the following method: First, a 4 bar laser is coupled into the fiber, and then a 4 bar fiber is used as a light source output. This method is complicated in structure because it requires the use of an optical fiber, and the optical fiber and the laser need to be combined. Moreover, since a plurality of optical devices such as a collimating lens and a coupling lens are used in the laser projection module, the cooperation between the devices is very complicated. The laser wastes energy during transmission between the devices. The problem is that the laser light source is bulky, low in efficiency, and high in cost. SUMMARY OF THE INVENTION The present invention has been made in view of the problems in the prior art that the structure of the laser projection light source module is relatively complicated and the light source utilization rate is relatively low. Therefore, the main object of the present invention is to provide a laser projection light source module and a projector to solve the problem. The above question. 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 includes: a first laser module including a first laser array; a second laser module including a second laser array; a third laser module including a third laser array; and an RGB light combining mirror for The light emitted by the laser module, the second laser module and the third laser module is combined and output, and the combined beam is output, wherein one of the first laser module, the second laser module and the third laser module is a red laser module One is a blue laser module, and the other is a green laser module. Accordingly, one of the first laser array, the second laser array, and the third laser array is a red laser array, one is a green laser array, and the other is a blue laser array. . In order to achieve the above object, according to another aspect of the present invention, a projector is provided. The projector includes the laser projection light source module provided by the present invention. By the present invention, a laser projection light source module comprising: a first laser module comprising a first laser array; a second laser module comprising a second laser array; a third laser module comprising a third laser array; and RGB A light combining mirror for combining the light emitted by the red laser module, the green laser module, and the blue laser module, and outputting the combined beam, by combining the light emitted by each laser module using the RGB light combining mirror The invention eliminates the need to use the optical fiber, thereby solving the problem that the structure of the laser projection light source module in the prior art is relatively complicated and the utilization rate of the light source is relatively low, thereby achieving the effect of simplifying the structure of the laser projection light source module and improving the utilization ratio of the light source. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a laser projection light source module according to a first embodiment of the present invention; FIG. 2a is a side view of a first embodiment of a laser array according to an embodiment of the present invention; Figure 2c is a side elevational view of a second embodiment of a laser array in accordance with an embodiment of the present invention; Figure 2d is a side view of a second embodiment of a laser array in accordance with an embodiment of the present invention; 2 is a front view of a second embodiment of a laser array according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a laser projection light source module according to a second embodiment of the present invention; 4 is a schematic view of a green light solid state laser array according to an embodiment of the present invention; FIG. 5 is a schematic view of a projector according to a first embodiment of the present invention; FIG. 6 is a schematic view of a projector according to a second embodiment of the present invention; 7 is a schematic diagram of a laser projection light source module according to a third embodiment of the present invention; FIG. 8 is a schematic diagram of a laser projection light source module according to a fourth embodiment of the present invention; and FIG. 9 is a fifth embodiment of the present invention. A schematic diagram of a laser projection light source module. 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. Embodiments of the present invention provide a laser projection light source module. The laser projection light source module includes: a first laser module including a first laser array; a second laser module including a second laser array; and a third laser module including a third laser array;
RGB合光镜， 用于对第一激光模块、 第二激光模块和第三激光模块发出 的光进行合束处理以及输出合束之后的光束， 其中， 第一激光模块、 第二激光模块和第三激光模块中一个为红色激光 模块， 一个为蓝色激光模块， 一个为绿色激光模块， 相应地， 第一激光器阵 列、 第二激光器阵列和第三激光器阵列中一个为红色激光器阵列， 一个为绿 色激光器阵列， 一个为蓝色激光器阵列。 也即， 第一激光模块、 第二激光模 块和第三激光模块均选自红色激光模块、 蓝色激光模块和绿色激光模块中之 一且各不相同， 第一激光器阵列、 第二激光器阵列和第三激光器阵列均选自 红色激光器阵列， 绿色激光器阵列和蓝色激光器阵列中之一且各不相同。 在上述激光投影光源模块中， 通过釆用 RGB 合光镜对第一激光模块、 第二激光模块和第三激光模块发出的光进行合束处理以及输出合束之后的光 束， 例如， 通过 RGB 合光镜的透射和反射等将第一激光模块、 第二激光模 块和第三激光模块发出的光进行合束处理， 能够无需再使用光纤， 因而简化 了结构， 其次， 由于釆用 RGB 合光镜进行合光处理的光损失比较少， 因而 提高了光源利用率。 优选地， RGB合光镜可以包括第一 RGB合光镜和第二 RGB合光镜。 图 1是根据本发明第一实施例的激光投影光源模块的示意图。 如图 1所示， 第一 RGB合光镜 5设置于第一激光模块 1和第二激光模 块 2之间，用于将第一激光模块的透射光和第二激光模块的反射光进行合束， 得到第一合并光束。 第二 RGB合光镜 6与第一 RGB合光镜 5平行设置， 并位于第一 RGB 合光镜 5和第三激光模块 3之间， 用于将第一合并光束的透射光和第三激光 模块的反射光进行合束， 得到第二合并光束。 在该激光投影光源模块中， 通过使得第一 RGB合光镜 5和第二 RGB合 光镜 6均分别通过透射和反射对两个激光模块发出的光进行合光处理， 从而 能够简便地实现合光处理。 上述的第一 RGB合光镜和第二 RGB合光镜可以均为二向色镜。 下面结合图 1来描述该激光投影光源模块的工作原理，主波长为 λΐ的激 光模块 ,2为主波长为 λ2的激光模块， 3为主波长为 λ3的激光模块,主波长为 λΐ的激光，经二向色镜 5(二向色镜 1的主要用途为透过主波长为 λΐ的激光， 反射主波长为 λ2的激光的）透射， 主波长为 λ2的激光， 经二向色镜 5反射， 这样主波长为 λΐ的激光与主波长为 λ2的激光合为一束，经过二向色镜 6 (二 向色镜 1的主要用途为透过主波长为 λ1、 λ2的激光， 反射主波长为 λ3的激 光） 透射， 主波长为 λ3的激光， 经二向色镜 6反射， 这样主波长为 λΐ的激 光、 主波长为 λ2的激光与主波长为 λ3的激光合为一束光输出。 通过该高亮 度大功率激光投影光源模块， 提高了激光光源利用率， 减少了零件， 有效减 小了光源体积， 简化了工艺， 节约了成本。 这里 λ1、 λ2、 λ3可任意对应 R、 G、 B光束。 如图 1 所示， 各色半导体激光器阵列分别组成 R、 G、 B激光模块再经 过 RGB合光镜合束后输出。 其中， 激光模块 1、 激光模块 2和激光模块 3中 的激光器阵列输出激光， 经过二向色镜实现合光。 其中半导体激光器矩阵阵 列可实现 ΜχΝ个半导体激光器阵列 （如图 2a和 2b所示；)， 从而达到满足需 要的亮度。 该方法工艺简单， 使用器件非常少， 适合大批量的生产， 提高了 光源的利用效率。 并且半导体激光器阵列本身就是一种匀光， 提高了我们投 影机的勾光效果。 图 2a和 2b可以为主波长为 λ1、 λ2或 λ3的半导体激光器阵列构成的单 色激光模块通用示意图， 每个阵列为单一主波长。 半导体激光器矩阵阵列可 实现 MxN ( M、 N>1 ) 个半导体激光器阵列。 它主要由半导体激光器和准 直镜 4——对应阵列组成。 由于半导体激光器的发散角度过大， 所以准直镜 主要用来准直半导体激光器的发散光束。 使半导体激光器经过准直镜后成近 平行光束， 有利于激光的利用。 该方案激光器还包括带微准直镜的激光器， 微准直镜是在半导体激光器 上直接粘接的微透镜，对激光器起到准直作用。通过釆用准直镜进行准直（如 图 2c和 2d所示；)， 能够克服微透镜的像差问题。 图 2c和 2d所示可以为主波长为 λ1、 λ2或 λ3的带 ^啟准直镜的半导体激 光器阵列的单色激光模块示意图。 如图 2c所示， 在半导体激光器前部粘接了 一个准直镜 4。 半导体激光器矩阵阵列可实现 ΜχΝ ( Μ、 Ν≥1 )个半导体激 光器阵列。 它主要由自带微准直镜半导体激光器 7和准直镜 4——对应阵列 组成。 尽管该半导体激光器自带了微准直镜， 但由于一些机械公差和像差问 题， 啟准直镜仍不能对光束 4艮好的准直， 因而， 优选地， 用准直镜来准直半 导体激光器的发散光束。 半导体激光器经过准直镜后成***行光束， 有利于 激光的利用。 图 2e 是 居本发明实施例的激光器阵列的第三实施例的示意图。 如图 2e所示， 增加了减小光学空隙方案的半导体激光器阵列的单色激光模块。 由 于每个半导体激光器经准直镜准直后光束， 与阵列的其他准直后光束会有一 定间隙， 对能量利用率有一定影响， 因而增加了可以减小每个光束间间隙的 阶梯棱镜 8或光学棱镜。 该实施例中的激光器阵列还包括激光器先经过准直透镜然后再经过减小 光学扩展量的模块构成的激光模块 （如图 2e所示） ，该减小光学扩展量的器 件可以包括反射镜阵列式， 棱镜阵列式。 图 3是 居本发明第二实施例的激光投影光源模块的示意图。 该实施例中， 绿光激光器釆用固体激光器， 由于固体激光器发散角非常 小， 通过釆用在绿光激光器出口处使用可旋转的散射片， 增加绿光发散角， 减小散斑。 在半导体激光器的矩形阵列方面， 其可以与图 2a至图 2e方案相 同， 但是在绿光固体激光器方面， 优选地， 使用散射片 9, 散射片 9有旋转 电机 11带动旋转， 示意图如图 4所示。 再经过各色光的滤光片实现合束。 其 中绿光固体激光器使用圓形半导体激光器阵列， 来达到满足需要的亮度。 这 种方法工艺简单， 使用器件非常少， 适合大批量的生产， 提高了光源的利用 效率。 并且对绿光固体激光器能起到一定的消散斑作用。 该实施例的散射片还可以包括不用电机旋转的散射片。 如图 3所示， 主波长为 λΐ的激光， 经二向色镜 1 (二向色镜 1的主要用 途为透过主波长为 λΐ的激光， 反射主波长为 λ2的激光的） 透射， 主波长为 λ2的激光， 经二向色镜 5反射， 这样主波长为 λΐ的激光与主波长为 λ2的激 光合为一束，经过二向色镜 6 (二向色镜 5的主要用途为透过主波长为 λ1、 λ2 的激光， 反射主波长为 λ3的激光） 透射， 主波长为 λ3的激光， 经二向色镜 6反射， 这样主波长为 λΐ的激光、 主波长为 λ2的激光与主波长为 λ3的激光 合为一束光输出。 该模块即为我们的高亮度大功率激光投影光源模块， 该模 块提高了激光光源利用率， 减少了零件， 有效减小了光源体积， 简化了工艺， 节约了成本。 这里 λ1、 λ2、 λ3可任意对应 R、 G、 B光束。 如图 4所示， 主波长为 λ1、 λ2或 λ3的固体激光器阵列的单色激光模块 示意图。固体激光器发散角小， 固体激光器 10发射激光进入旋转的散射片 9, 激光束是发散角变大， 经过准直镜 4, 变为平行光束。 与该阵列的其他光束 形成了一束平行光束。 由于经过旋转的散射片， 有利于消散斑， 提高激光显 示的显示效果。 本发明实施例还提供了一种投影机。 图 5 为激光投影光源模块 12直接接入光机的示意图。 激光投影光源模 块的激光光源直接进入光机***的复眼透镜 13 , 其中， 在激光投影光源模块 的出光处还设置有复眼透镜 13 , 经聚光镜 14进入棱镜 17, 反射到显示元件 16上， 经显示元件反射， 透过棱镜 17, 经投影镜头 15投出图像。 其中， 复 眼透镜是由一系列小透镜组合形成， 通过使得激光投影光源模块 12 发出的 光经过复眼透镜 13 后直接接入光机， 能够提高光能利用率和以及达到匀光 的效果。 图 6为激光投影光源模块 12直接接入光机另一实施例的示意图。 激光 投影光源模块 12的激光光源直接进入光机***的光棒 18, 其中， 在激光投 影光源模块的出光处还设置有光棒 18, 经聚光镜 14进入棱镜 17, 反射到显 示元件 16上， 经显示元件 16反射， 透过棱镜 17, 经投影镜头 15投出图像。 通过使得激光投影光源模块 12发出的激光直接进入光机***的光棒 18,在棒 内会经过多次的反射后出射，从而起到匀光的目的。 优选地， RGB合光镜也可以包括第三 RGB合光镜 19、 第四 RGB合光 镜和第五 RGB合光镜。 图 7是 居本发明第三实施例的激光投影光源模块的示意图。 如图 7所 示： 第三 RGB合光镜 19, 用于反射来自第一激光模块的光， 得到第一反射 光。 第四 RGB合光镜， 可以与前述的第一 RGB合光镜 5相同， 与第三 RGB 合光镜 19 平行设置， 用于接收第一反射光， 反射来自第二激光模块的光并 将第一反射光和第二激光模块的光进行合束， 得到第三合并光束。 第五 RGB合光镜， 可以与前述的第一 RGB合光镜 6相同， 与第三 RGB 合光镜平行设置， 用于接收第三合并光束， 反射来自第三激光模块的光并将 第三合并光束和第三激光模块的光进行合束， 得到第四合并光束， 其中， 第 一激光模块 1、 第二激光模块 2和第三激光模块 3设置在同一平面上。 在该激光投影光源模块中， 通过第三 RGB合光镜的反射， 第四 RGB合 光镜的透射及反射， 以及第五 RGB 合光镜的透射和反射， 能够简便地实现 合光处理， 并且能够使得第一激光模块、 第二激光模块和第三激光模块设置 在同一平面上， 从而进一步地简化了结构。 如图 7所示， 主波长为 λΐ的激光， 经反射镜 19反射， 经二向色镜 5透 射， 主波长为 λ2的激光， 经二向色镜 5反射， 这样主波长为 λΐ的激光与主 波长为 λ2的激光合为一束， 经过二向色镜 6透射， 主波长为 λ3的激光， 经 二向色镜 6反射， 这样主波长为 λΐ的激光、 主波长为 λ2的激光与主波长为 λ3的激光合为一束光输出。该模块也为我们的高亮度大功率激光投影光源模 块。 上述的第三 RGB合光镜、 第四 RGB合光镜和第五 RGB合光镜可以均 为二向色镜， 优选地， 第三 RGB合光镜为反射镜， 从而可以节约成本。 优选地， 第一激光器阵列、 第二激光器阵列和第三激光器阵列中任意一 个或多个为半导体激光器阵列。 优选地， 激光投影光源模块还包括： 准直镜， 分别设置于， 第一激光器 阵列、 第二激光器阵列和第三激光器阵列的发光侧。 优选地， 第一激光器阵列、 第二激光器阵列和第三激光器阵列中的各个 激光器均为自带微准直镜的半导体激光器。 图 8是 居本发明第四实施例的激光投影光源模块的示意图； 以及图 9 是才艮据本发明第五实施例的激光投影光源模块的示意图。 如图 8所示， 20 (a) 为二向色镜， 用于透过主波长为 λΐ的激光， 反射 主波长为 λ3的激光的， 20 (b)为二向色镜， 用于透过主波长为 λ1、 λ3的激 光， 反射主波长为 λ2的激光， 20 (c) 为二向色镜， 用于透过主波长为 λ1、 λ2的激光， 反射主波长为 λ3的激光， 20 (d) 为二向色镜 6, 用于透过主波 长为 λΐ, 反射主波长为 λ2的激光。 An RGB light combining mirror, configured to perform a beam combining process on the light emitted by the first laser module, the second laser module, and the third laser module, and output a beam after the combining, wherein the first laser module, the second laser module, and the first One of the three laser modules is a red laser module, one is a blue laser module, and the other is a green laser module. Accordingly, one of the first laser array, the second laser array, and the third laser array is a red laser array, and one is green. A laser array, one for the blue laser array. That is, the first laser module, the second laser module, and the third laser module are each selected from one of a red laser module, a blue laser module, and a green laser module, and the first laser array, the second laser array, and The third laser array is each selected from the group consisting of a red laser array, a green laser array, and a blue laser array, and each is different. In the above laser projection light source module, the light emitted by the first laser module, the second laser module, and the third laser module is combined by the RGB illuminating mirror, and the combined beam is output, for example, by RGB combining. The transmission and reflection of the light mirror combines the light emitted by the first laser module, the second laser module, and the third laser module, thereby eliminating the need to use an optical fiber, thereby simplifying the structure. Second, because of the RGB illuminating mirror The light loss of the light combining process is relatively small, thereby improving the light source utilization rate. Preferably, the RGB light combining mirror may include a first RGB light combining mirror and a second RGB light combining mirror. 1 is a schematic view of a laser projection light source module in accordance with a first embodiment of the present invention. As shown in FIG. 1 , a first RGB light combining mirror 5 is disposed between the first laser module 1 and the second laser module 2 for combining the transmitted light of the first laser module and the reflected light of the second laser module. , to obtain the first combined beam. The second RGB illuminating mirror 6 is disposed in parallel with the first RGB illuminating mirror 5 and is located between the first RGB illuminating mirror 5 and the third laser module 3 for transmitting the transmitted light of the first combined beam and the third laser The reflected light of the module is combined to obtain a second combined beam. In the laser projection light source module, the first RGB condensing mirror 5 and the second RGB condensing mirror 6 are combined and light-received to transmit light emitted from the two laser modules, thereby enabling easy integration. Light processing. The first RGB light combining mirror and the second RGB light combining mirror described above may both be dichroic mirrors. The working principle of the laser projection light source module will be described below with reference to FIG. 1. The laser module with a dominant wavelength of λΐ, 2 a laser module with a main wavelength of λ2, 3 a laser module with a main wavelength of λ3, and a laser with a dominant wavelength of λΐ, The dichroic mirror 5 (the main purpose of the dichroic mirror 1 is to transmit a laser having a dominant wavelength of λ , and a laser having a dominant wavelength of λ 2 ), and a laser having a dominant wavelength of λ 2 is reflected by the dichroic mirror 5 . Thus, the laser having a dominant wavelength of λΐ is combined with the laser having a dominant wavelength of λ2, and passes through the dichroic mirror 6 (the main purpose of the dichroic mirror 1 is to transmit laser light having a dominant wavelength of λ1, λ2, and reflect the dominant wavelength. The laser light of λ3 is transmitted, and the laser light having a dominant wavelength of λ3 is reflected by the dichroic mirror 6, so that the laser light having a dominant wavelength of λ 、, the laser light having a dominant wavelength of λ 2 and the laser light having a dominant wavelength of λ 3 are combined into one light output. The high-brightness and high-power laser projection light source module improves the utilization rate of the laser light source, reduces parts, effectively reduces the volume of the light source, simplifies the process, and saves cost. Here, λ1, λ2, and λ3 can arbitrarily correspond to the R, G, and B beams. As shown in FIG. 1, each of the semiconductor laser arrays is composed of R, G, and B laser modules, and then combined by RGB light combining mirrors and output. The laser arrays in the laser module 1, the laser module 2, and the laser module 3 output laser light, and the light is merged through a dichroic mirror. The semiconductor laser matrix array can implement a semiconductor laser array (as shown in Figures 2a and 2b;) to achieve the desired brightness. The method is simple in process, uses very few devices, is suitable for mass production, and improves the utilization efficiency of the light source. And the semiconductor laser array itself is a kind of uniform light, which improves the hooking effect of our projector. 2a and 2b can be a general schematic diagram of a monochromatic laser module composed of a semiconductor laser array having a wavelength of λ1, λ2 or λ3, each array having a single dominant wavelength. Semiconductor laser matrix array Implement MxN (M, N>1) semiconductor laser arrays. It consists mainly of a semiconductor laser and a collimating mirror 4 - a corresponding array. Since the divergence angle of the semiconductor laser is too large, the collimating mirror is mainly used to collimate the divergent beam of the semiconductor laser. The semiconductor laser is passed through the collimating mirror and becomes a nearly parallel beam, which is beneficial to the utilization of the laser. The solution laser also includes a laser with a micro-collimator mirror, which is a microlens directly bonded to the semiconductor laser to collimate the laser. By collimating with a collimating mirror (as shown in Figures 2c and 2d;), the aberration of the microlens can be overcome. 2c and 2d are schematic views of a monochromatic laser module of a semiconductor laser array with a collimating mirror having a dominant wavelength of λ1, λ2 or λ3. As shown in Fig. 2c, a collimating mirror 4 is bonded to the front of the semiconductor laser. The semiconductor laser matrix array can realize ΜχΝ ( Μ, Ν ≥ 1 ) semiconductor laser arrays. It is mainly composed of a self-contained micro-collimator semiconductor laser 7 and a collimating mirror 4 - a corresponding array. Although the semiconductor laser has its own micro-collimator lens, the alignment lens still cannot collimate the beam 4 due to some mechanical tolerances and aberrations. Therefore, it is preferable to collimate the semiconductor with a collimating mirror. The diverging beam of the laser. The semiconductor laser passes through the collimating mirror and becomes a nearly parallel beam, which is beneficial to the utilization of the laser. 2e is a schematic diagram of a third embodiment of a laser array in accordance with an embodiment of the present invention. As shown in Figure 2e, a monochromatic laser module of a semiconductor laser array with reduced optical aperture scheme is added. Since each semiconductor laser is collimated by the collimating mirror, there is a certain gap between the collimated and other collimated beams of the array, which has an effect on the energy utilization rate, thereby increasing the step prism 8 which can reduce the gap between each beam. Or an optical prism. The laser array in this embodiment further includes a laser module (shown in FIG. 2e) in which the laser first passes through the collimating lens and then through the reduced etendue module, and the reduced etend amount device may include a mirror array. Style, prism array. Figure 3 is a schematic illustration of a laser projection light source module in accordance with a second embodiment of the present invention. In this embodiment, the green laser uses a solid-state laser. Since the divergence angle of the solid-state laser is very small, the green light divergence angle is increased and the speckle is reduced by using a rotatable diffusing sheet at the exit of the green laser. In terms of the rectangular array of the semiconductor laser, it can be the same as the embodiment of FIG. 2a to FIG. 2e, but in the case of the green solid-state laser, preferably, the diffusion sheet 9 is used, and the scattering sheet 9 is rotated by the rotating motor 11, as shown in FIG. Show. The filters are then passed through the filters of the respective colors of light. The green solid-state laser uses a circular semiconductor laser array to achieve the desired brightness. This The method is simple in process, very few devices are used, suitable for mass production, and the utilization efficiency of the light source is improved. And it can play a certain role in dissipating the scatter on the green solid-state laser. The diffusion sheet of this embodiment may further include a diffusion sheet that is not rotated by a motor. As shown in Fig. 3, the laser with a dominant wavelength of λ 经 passes through the dichroic mirror 1 (the main purpose of the dichroic mirror 1 is to transmit a laser with a dominant wavelength of λ , and reflect a laser with a dominant wavelength of λ 2 ). The laser light having a wavelength of λ2 is reflected by the dichroic mirror 5, so that the laser light having a dominant wavelength of λ 合 and the laser light having a dominant wavelength of λ 2 are combined into a bundle, and passed through the dichroic mirror 6 (the main purpose of the dichroic mirror 5 is to A laser having a dominant wavelength of λ1 and λ2 and a laser having a dominant wavelength of λ3 are transmitted, and a laser having a dominant wavelength of λ3 is reflected by the dichroic mirror 6, such that a laser having a dominant wavelength of λ 、 and a laser having a dominant wavelength of λ 2 are The laser light having a dominant wavelength of λ3 is combined into a light output. This module is our high-brightness and high-power laser projection light source module. This module improves the utilization of laser light source, reduces parts, effectively reduces the volume of the light source, simplifies the process and saves cost. Here, λ1, λ2, and λ3 can arbitrarily correspond to the R, G, and B beams. As shown in FIG. 4, a schematic diagram of a monochromatic laser module of a solid-state laser array having a dominant wavelength of λ1, λ2 or λ3. The solid-state laser has a small divergence angle, and the solid-state laser 10 emits laser light into the rotating diffusing sheet 9, and the laser beam has a large divergence angle, and passes through the collimator lens 4 to become a parallel beam. A parallel beam of light is formed with the other beams of the array. Due to the rotating diffusing sheet, it is advantageous to dissipate the speckle and improve the display effect of the laser display. The embodiment of the invention also provides a projector. FIG. 5 is a schematic diagram of the laser projection light source module 12 directly connected to the optical machine. The laser light source of the laser projection light source module directly enters the fly-eye lens 13 of the optomechanical system, wherein a fly-eye lens 13 is further disposed at the light exiting portion of the laser projection light source module, and enters the prism 17 through the condensing mirror 14 and is reflected onto the display element 16 for display. The element is reflected, and the image is projected through the projection lens 15 through the prism 17. Wherein, the fly-eye lens is formed by a series of small lens combinations, and the light emitted by the laser projection light source module 12 is directly connected to the optical machine through the fly-eye lens 13, thereby improving the light energy utilization rate and achieving the uniform light effect. FIG. 6 is a schematic diagram of another embodiment of the laser projection light source module 12 directly connected to the optical machine. The laser light source of the laser projection light source module 12 directly enters the light bar 18 of the optical system, wherein a light bar 18 is further disposed at the light exiting of the laser projection light source module, and enters the prism 17 through the condensing mirror 14 and is reflected onto the display element 16 through The display element 16 reflects, passes through the prism 17, and projects an image through the projection lens 15. By causing the laser light emitted from the laser projection light source module 12 to directly enter the light rod 18 of the optical system, the reflection inside the rod is repeated multiple times, thereby achieving the purpose of uniform light. Preferably, the RGB light combining mirror may also include a third RGB light combining mirror 19, a fourth RGB light combining mirror, and a fifth RGB light combining mirror. Figure 7 is a schematic illustration of a laser projection light source module in accordance with a third embodiment of the present invention. As shown in FIG. 7, a third RGB illuminating mirror 19 is configured to reflect light from the first laser module to obtain first reflected light. The fourth RGB illuminating mirror may be disposed in parallel with the third RGB illuminating mirror 19 in the same manner as the first RGB illuminating mirror 5, for receiving the first reflected light, and reflecting the light from the second laser module and A reflected light and light of the second laser module are combined to obtain a third combined beam. The fifth RGB illuminating mirror may be the same as the first RGB illuminating mirror 6 described above, and disposed in parallel with the third RGB illuminating mirror for receiving the third combined beam, reflecting the light from the third laser module and the third The combined light beam and the light of the third laser module are combined to obtain a fourth combined light beam, wherein the first laser module 1, the second laser module 2 and the third laser module 3 are disposed on the same plane. In the laser projection light source module, the light combining processing can be easily realized by the reflection of the third RGB condensing mirror, the transmission and reflection of the fourth RGB fused mirror, and the transmission and reflection of the fifth RGB condensing mirror, and The first laser module, the second laser module, and the third laser module can be disposed on the same plane, thereby further simplifying the structure. As shown in FIG. 7, the laser light having a dominant wavelength of λ , is reflected by the mirror 19 and transmitted through the dichroic mirror 5, and the laser light having a dominant wavelength of λ2 is reflected by the dichroic mirror 5, so that the laser light having a dominant wavelength of λ 与The laser light having a dominant wavelength of λ2 is combined into a bundle, and transmitted through the dichroic mirror 6, and the laser light having a dominant wavelength of λ3 is reflected by the dichroic mirror 6, so that the laser having a dominant wavelength of λΐ and the laser having a dominant wavelength of λ2 and the main The laser light having a wavelength of λ3 is combined into a light output. This module is also our high brightness and high power laser projection light source module. The third RGB illuminating mirror, the fourth RGB illuminating mirror and the fifth RGB illuminating mirror may all be dichroic mirrors. Preferably, the third RGB illuminating mirror is a mirror, thereby saving cost. Preferably, any one or more of the first laser array, the second laser array, and the third laser array are semiconductor laser arrays. Preferably, the laser projection light source module further includes: a collimating mirror disposed on the light emitting sides of the first laser array, the second laser array, and the third laser array, respectively. Preferably, each of the first laser array, the second laser array, and the third laser array is a semiconductor laser with a micro-collimator. Figure 8 is a schematic view of a laser projection light source module according to a fourth embodiment of the present invention; and Figure 9 is a schematic view of a laser projection light source module according to a fifth embodiment of the present invention. As shown in Fig. 8, 20 (a) is a dichroic mirror for transmitting a laser having a dominant wavelength of λ , and reflecting a laser having a dominant wavelength of λ 3 , and 20 (b) is a dichroic mirror for transmitting A laser with a dominant wavelength of λ1 and λ3 reflects a laser with a dominant wavelength of λ2, and 20 (c) is a dichroic mirror that transmits a laser with a dominant wavelength of λ1 and λ2 and reflects a laser with a dominant wavelength of λ3, 20 ( d) is a dichroic mirror 6 for transmitting a laser having a dominant wavelength of λ ΐ and reflecting a dominant wavelength of λ 2 .
X合光片主要由 20 ( a )、 20 ( b )、 20 ( c )、 20 ( d ) 四片二向色片组成。 主波长为 λΐ的激光， 经 20 (a)、 20 (b)、 20 ( c )、 20 ( d) 透射； 主波长为 λ2的激光， 经二向色镜 20 (d)、 20 (b)反射， 经 20 (c)透射； 主波长为 λ3 的激光， 经二向色镜 20 (a)、 20 (c)反射， 经 20 (b)透射。 这样主波长为 λΐ的激光、 主波长为 λ2的激光与主波长为 λ3的激光合为一束光输出。 如图 9所示， 21 (a) 为棱镜二向膜， 用于透过主波长为 λΐ的激光， 反 射主波长为 λ3 的激光， 21 (b) 为棱镜二向膜， 用于透过主波长为 λ1、 λ3 的激光， 反射主波长为 λ2的激光， 21 (c) 为棱镜二向膜， 用于透过主波长 为 λ1、 λ2的激光， 反射主波长为 λ3的激光， 21 (d)也为棱镜二向莫 4, 用 于透过主波长为 λΐ, 反射主波长为 λ2的激光。 其中， X合光棱镜主要由四片棱镜粘接组成， 21 (a)、 21 (b)、 21 (c)、 21 (d)分另' J为棱镜粘接面。 主波长为 λΐ的激光， 经 21 (a)、 21 (b)、 21 (c)、 21 (d) 透射； 主波长为 λ2的激光， 经二向色镜 21 (d)、 21 (b) 反射， 经 21 (c) 透射； 主波长为 λ3 的激光， 经二向色镜 21 (a)、 21 (c) 反射， 经 21 (b) 透射。 这样主波长为 λΐ的激光、 主波长为 λ2的激光与主波长为 λ3 的激光合为一束光输出。 通过该实施例， 提供了一种高亮度大功率激光投影 光源模块。 从以上的描述中， 可以看出， 本发明能够简化激光投影光源模块结构、 提高光源利用率。 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。 The X-ray film is mainly composed of 20 (a), 20 (b), 20 (c), 20 (d) four-piece dichroic films. Laser with dominant wavelength λΐ, transmitted through 20 (a), 20 (b), 20 ( c ), 20 ( d); laser with dominant wavelength λ 2 , passing through dichroic mirror 20 (d), 20 (b) Reflection, transmitted through 20 (c); laser with a dominant wavelength of λ3, reflected by dichroic mirrors 20 (a), 20 (c), transmitted through 20 (b). Thus, the laser light having a dominant wavelength of λ 、, the laser light having a dominant wavelength of λ 2 , and the laser light having a dominant wavelength of λ 3 are combined into one light output. As shown in Fig. 9, 21 (a) is a prismatic dichroic film for transmitting laser light having a dominant wavelength of λ , and reflecting a laser light having a dominant wavelength of λ 3 , and 21 (b) is a prismatic dichroic film for transmitting through the main Lasers with wavelengths λ1 and λ3 reflect laser light with a dominant wavelength of λ2, and 21 (c) is a prismatic dichroic film that transmits laser light with dominant wavelengths λ1 and λ2 and reflects laser light with a dominant wavelength of λ3, 21 (d It is also a prismatic dipole 4 for transmitting a laser having a dominant wavelength of λ 透过 and a dominant wavelength of λ 2 . Among them, the X-combined prism is mainly composed of four prisms, 21 (a), 21 (b), 21 (c), 21 (d) and the other is J prism bonding surface. Laser with a dominant wavelength of λΐ, transmitted through 21 (a), 21 (b), 21 (c), 21 (d); laser with a dominant wavelength of λ2, passing through dichroic mirrors 21 (d), 21 (b) Reflection, 21 (c) transmission; laser with a dominant wavelength of λ3, reflected by dichroic mirrors 21 (a), 21 (c), transmitted through 21 (b). Thus, a laser having a dominant wavelength of λ 、, a laser having a dominant wavelength of λ 2 , and a laser having a dominant wavelength of λ 3 are combined into one light output. With this embodiment, a high brightness and high power laser projection light source module is provided. From the above description, it can be seen that the present invention can simplify the structure of the laser projection light source module and improve the utilization of the light source. 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 一种激光投影光源模块， 其特征在于包括： The invention relates to a laser projection light source module, which is characterized in that:
第一激光模块， 包括第一激光器阵列；  a first laser module, including a first laser array;
第二激光模块， 包括第二激光器阵列；  a second laser module, including a second laser array;
第三激光模块， 包括第三激光器阵列； 以及  a third laser module comprising a third laser array;
RGB合光镜， 用于对所述第一激光模块、 所述第二激光模块和所 述第三激光模块发出的光进行合束处理以及输出合束之后的光束， 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 块中一个为红色激光模块， 一个为蓝色激光模块， 一个为绿色激光模 块， 相应地， 所述第一激光器阵列、 所述第二激光器阵列和所述第三 激光器阵列中一个为红色激光器阵列， 一个为绿色激光器阵列， 一个 为蓝色激光器阵列。 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 RGB合 光镜包括：  An RGB light combining mirror, configured to perform a beam combining process on the light emitted by the first laser module, the second laser module, and the third laser module, and output a beam after combining, wherein the first laser One of the module, the second laser module and the third laser module is a red laser module, one is a blue laser module, and the other is a green laser module, and correspondingly, the first laser array and the second laser One of the array and the third laser array is a red laser array, one being a green laser array and one being a blue laser array. The laser projection light source module according to claim 1, wherein the RGB light combining mirror comprises:
第一 RGB合光镜，设置于所述第一激光模块和所述第二激光模块 之间， 用于将所述第一激光模块的透射光和所述第二激光模块的反射 光进行合束， 得到第一合并光束； 以及  a first RGB light combining mirror disposed between the first laser module and the second laser module, configured to combine the transmitted light of the first laser module and the reflected light of the second laser module , obtaining a first combined beam;
第二 RGB合光镜， 位于所述第一 RGB合光镜和所述第三激光模 块之间， 用于将所述第一合并光束的透射光和所述第三激光模块的反 射光进行合束， 得到第二合并光束。 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 RGB合 光镜包括：  a second RGB condensing mirror, located between the first RGB condensing mirror and the third laser module, for combining the transmitted light of the first combined beam and the reflected light of the third laser module Beam, resulting in a second combined beam. The laser projection light source module according to claim 1, wherein the RGB light combining mirror comprises:
第三 RGB合光镜， 用于反射来自第一激光模块的光， 得到第一反 射光；  a third RGB light combining mirror for reflecting light from the first laser module to obtain first reflected light;
第四 RGB合光镜， 设置于所述第三 RGB合光镜和所述第二激光 模块之间， 用于接收所述第一反射光， 反射来自所述第二激光模块的 光并将所述第一反射光和所述第二激光模块的光进行合束， 得到第三 合并光束； 以及 第五 RGB合光镜， 设置于所述第四 RGB合光镜和所述第三激光 模块之间， 用于接收所述第三合并光束， 反射来自所述第三激光模块 的光并将所述第三合并光束和所述第三激光模块的光进行合束， 得到 第四合并光束， a fourth RGB condensing mirror disposed between the third RGB condensing mirror and the second laser module, configured to receive the first reflected light, reflect light from the second laser module, and Combining the first reflected light and the light of the second laser module to obtain a third combined beam; a fifth RGB condensing mirror disposed between the fourth RGB condensing mirror and the third laser module, configured to receive the third combined beam, reflect light from the third laser module, and Combining the third combined beam with the light of the third laser module to obtain a fourth combined 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 块设置在同一平面上。  The first laser module, the second laser module, and the third laser module are disposed on the same plane.
4. 根据权利要求 3所述的激光投影光源模块，其特征在于，所述第三 RGB 合光镜为反射镜。 4. The laser projection light source module according to claim 3, wherein the third RGB light combining mirror is a mirror.
5. 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 光器阵列、 所述第二激光器阵列和所述第三激光器阵列中任意一个或 多个为半导体激光器阵列。 The laser projection light source module according to claim 1, wherein any one or more of the first laser array, the second laser array, and the third laser array is a semiconductor laser array.
6. 根据权利要求 5所述的激光投影光源模块， 其特征在于， 所述绿色激 光模块为固体激光模块。 The laser projection light source module according to claim 5, wherein the green laser module is a solid laser module.
7. 根据权利要求 6所述的激光投影光源模块， 其特征在于， 在所述固体 激光模块的出光处设置有散射片。 The laser projection light source module according to claim 6, wherein a diffusing sheet is disposed at a light exiting portion of the solid laser module.
8. 根据权利要求 6所述的激光投影光源模块， 其特征在于， 还包括： 电机； 8. The laser projection light source module according to claim 6, further comprising: a motor;
其中， 所述散射片设置于所述电机上， 所述电机用于带动所述散 射片旋转。  The scattering sheet is disposed on the motor, and the motor is configured to drive the scattering sheet to rotate.
9. 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： 9. The laser projection light source module of claim 1, further comprising:
准直镜， 分别设置于所述第一激光器阵列、 所述第二激光器阵列 和所述第三激光器阵列的发光侧。  Collimating mirrors are disposed on the light emitting sides of the first laser array, the second laser array, and the third laser array, respectively.
10. 根据权利要求 9所述的激光投影光源模块， 其特征在于， 所述第一激 光器阵列、 所述第二激光器阵列和所述第三激光器阵列中的各个激光 器均为自带微准直镜的半导体激光器。 The laser projection light source module according to claim 9, wherein each of the first laser array, the second laser array, and the third laser array is a self-contained micro-collimator Semiconductor laser.
11. 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 RGB合 光镜为 X合光片。 The laser projection light source module according to claim 1, wherein the RGB light combining mirror is an X-ray combining sheet.
12. 一种投影机， 其特征在于包括权利要求 1至 11中任一项权利要求所述 的激光投影光源模块。 A projector comprising a laser projection light source module according to any one of claims 1 to 11.
13. 根据权利要求 12所述的激光投影光源模块，其特征在于还包括：光机， 其中，所述激光投影光源模块设置于所述光机中并作为投影光源出射。 The laser projection light source module according to claim 12, further comprising: an optical machine, wherein the laser projection light source module is disposed in the optical machine and is emitted as a projection light source.
14. 根据权利要求 13所述的激光投影光源模块， 其特征在于， 在所述激光 投影光源模块的出光处还设置有复眼透镜。 The laser projection light source module according to claim 13, wherein a fly-eye lens is further disposed at a light exiting portion of the laser projection light source module.
15. 根据权利要求 13所述的激光投影光源模块， 其特征在于， 在所述激光 投影光源模块的出光处还设置有光棒。 15. The laser projection light source module according to claim 13, wherein a light rod is further disposed at a light exiting portion of the laser projection light source module.
PCT/CN2011/072293 2011-03-30 2011-03-30 Laser projection light source module and projection apparatus WO2012129788A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/072293 WO2012129788A1 (en) 2011-03-30 2011-03-30 Laser projection light source module and projection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/072293 WO2012129788A1 (en) 2011-03-30 2011-03-30 Laser projection light source module and projection apparatus

Publications (1)

Publication Number Publication Date
WO2012129788A1 true WO2012129788A1 (en) 2012-10-04

Family

ID=46929332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/072293 WO2012129788A1 (en) 2011-03-30 2011-03-30 Laser projection light source module and projection apparatus

Country Status (1)

Country Link
WO (1) WO2012129788A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109634040A (en) * 2019-01-23 2019-04-16 苏州佳世达光电有限公司 Projector and its driving circuit
WO2020253166A1 (en) * 2019-06-20 2020-12-24 青岛海信激光显示股份有限公司 Laser light source and laser projection apparatus
CN112930468A (en) * 2018-11-08 2021-06-08 成都频泰鼎丰企业管理中心（有限合伙） Three-dimensional measuring device
US11079665B2 (en) 2019-03-20 2021-08-03 Hisense Laser Display Co., Ltd. Laser projection apparatus
US11237468B2 (en) 2019-06-20 2022-02-01 Hisense Laser Display Co., Ltd. Laser projection apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975659B2 (en) * 2001-09-10 2005-12-13 Fuji Photo Film Co., Ltd. Laser diode array, laser device, wave-coupling laser source, and exposure device
CN1773368A (en) * 2004-11-12 2006-05-17 南京Lg同创彩色显示***有限责任公司 Projector display system utilizing LED/LD
CN101487928A (en) * 2008-01-15 2009-07-22 红蝶科技(深圳)有限公司 Three-color mixed light source component and projection system
CN101598855A (en) * 2008-06-02 2009-12-09 深圳市科创数字显示技术有限公司 Laser projection imaging system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975659B2 (en) * 2001-09-10 2005-12-13 Fuji Photo Film Co., Ltd. Laser diode array, laser device, wave-coupling laser source, and exposure device
CN1773368A (en) * 2004-11-12 2006-05-17 南京Lg同创彩色显示***有限责任公司 Projector display system utilizing LED/LD
CN101487928A (en) * 2008-01-15 2009-07-22 红蝶科技(深圳)有限公司 Three-color mixed light source component and projection system
CN101598855A (en) * 2008-06-02 2009-12-09 深圳市科创数字显示技术有限公司 Laser projection imaging system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112930468A (en) * 2018-11-08 2021-06-08 成都频泰鼎丰企业管理中心（有限合伙） Three-dimensional measuring device
CN112930468B (en) * 2018-11-08 2022-11-18 成都频泰鼎丰企业管理中心（有限合伙） Three-dimensional measuring device
US11953313B2 (en) 2018-11-08 2024-04-09 Chengdu Pin Tai Ding Feng Business Administration Three-dimensional measurement device
CN109634040A (en) * 2019-01-23 2019-04-16 苏州佳世达光电有限公司 Projector and its driving circuit
CN109634040B (en) * 2019-01-23 2021-03-30 苏州佳世达光电有限公司 Projector and driving circuit thereof
US11079665B2 (en) 2019-03-20 2021-08-03 Hisense Laser Display Co., Ltd. Laser projection apparatus
WO2020253166A1 (en) * 2019-06-20 2020-12-24 青岛海信激光显示股份有限公司 Laser light source and laser projection apparatus
US11237468B2 (en) 2019-06-20 2022-02-01 Hisense Laser Display Co., Ltd. Laser projection apparatus

Similar Documents

Publication Publication Date Title
JP5378211B2 (en) Equipment for projection systems
JP4477571B2 (en) Illumination unit and image projection apparatus employing the same
US10197900B2 (en) Light-emitting device employing a reflective light focusing system having a focusing region and a non-focusing region and projection system incorporating the same
US20060007538A1 (en) Illumination Systems
WO2018045732A1 (en) Laser array apparatus and projector illumination optical path thereof
JP2006154813A (en) Illumination unit and image projection apparatus adopting the same
CN101546045B (en) Polarization converter and projection system using same
TWM552112U (en) Light source device and projection system
JP6632231B2 (en) Light source device, lighting device using the same, and projection display device
CN102722071A (en) Laser projection light source module and projector
US11215916B2 (en) Compact size multi-channel light engine projection apparatus
WO2012129788A1 (en) Laser projection light source module and projection apparatus
JP7098937B2 (en) Lighting equipment and projectors
JP2016145966A (en) Light source device and projection-type image display device
WO2022037196A1 (en) Three-color light source device and projection display device
TWI461822B (en) Illuminating unit and display
JP2019078947A (en) Light source device and projector
CN212391676U (en) Optical system and projection apparatus
JP4943885B2 (en) Multi-wavelength polarization conversion element, illumination unit, and image display device
JP2001005097A (en) Reflection type color projector
CN219016710U (en) Micro light engine and near-to-eye display device
CN109254485B (en) Light source device and projection system
WO2012129785A1 (en) Laser projection light source module and beam shaping method thereof as well as laser display equipment
WO2022048324A1 (en) Hybrid light source system and projection device
CN211786559U (en) Laser light source module and laser display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11862759

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11862759

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS (EPO FORM 1205A DATED 21-07-2014)

122 Ep: pct application non-entry in european phase

Ref document number: 11862759

Country of ref document: EP

Kind code of ref document: A1