WO2016011928A1 - 一种激光显示系统 - Google Patents

一种激光显示系统 Download PDF

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Publication number
WO2016011928A1
WO2016011928A1 PCT/CN2015/084600 CN2015084600W WO2016011928A1 WO 2016011928 A1 WO2016011928 A1 WO 2016011928A1 CN 2015084600 W CN2015084600 W CN 2015084600W WO 2016011928 A1 WO2016011928 A1 WO 2016011928A1
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Prior art keywords
semiconductor laser
module
green
laser module
red
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PCT/CN2015/084600
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English (en)
French (fr)
Inventor
许祖彦
毕勇
刘可
彭钦军
高伟男
宗楠
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Technical Institute of Physics and Chemistry
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Technical Institute of Physics and Chemistry
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Application filed by Technical Institute of Physics and Chemistry filed Critical Technical Institute of Physics and Chemistry
Priority to EP15824125.7A priority Critical patent/EP3196696B1/en
Priority to JP2017524081A priority patent/JP6637498B2/ja
Priority to US15/328,685 priority patent/US10750140B2/en
Publication of WO2016011928A1 publication Critical patent/WO2016011928A1/zh
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    • 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]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • 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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
    • 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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • 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
    • H04N9/3144—Cooling systems
    • 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
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • 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
    • 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
    • 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
    • H04N9/317—Convergence or focusing systems
    • 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]
    • H04N9/3197—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using light modulating optical valves
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

Definitions

  • the present invention relates to the field of laser display technology, and more particularly to a laser display system.
  • the laser has high brightness, so the laser display is more likely to reach the large-screen display of the human eye's geometric resolution limit; the laser is a line spectrum, such as the laser's spectral width is 5nm, and the existing display spectral width is 40nm, then the laser display can present the color
  • the number is about 500 times higher than the existing display, so the laser display can achieve dual high definition; at the same time, the laser has higher color saturation, and the chromaticity triangle area can be formed as much as possible by selecting the three primary color wavelengths close to the apex angle of the chromaticity triangle. Large, showing more realistic and richer colors in nature, real three-dimensional display through laser holography. Therefore, laser display is the development direction of future display technology.
  • the three-color semiconductor laser LD module is used as a light source for laser display, which has electrical excitation, high efficiency, long life, all solid state, miniaturization, and low cost. Therefore, the red, green and blue RGB modules are the most industrialized laser display in the future. Good light source.
  • the Chinese Academy of Sciences adopted an all-solid-state laser as a three-primary light source to realize a demonstration of a series of 84-inch and 140-inch laser TVs.
  • Mitsubishi Corporation of Japan developed a 65-inch, 75-inch laser TV using solid-state lasers and LD hybrid light sources.
  • Japan Casio developed a laser projection prototype of LD, LED and phosphor mixed light source; in 2011, Mitsubishi developed a liquid crystal TV using LD module and LED hybrid lighting.
  • all-solid-state laser as the three primary color light source cannot be mass-produced, and the wavelength is not adjustable, the structure is complex, and the efficiency is low; the LD module and the phosphor mixed light source cannot fully reflect the advantages of the laser display due to the wide fluorescence spectrum.
  • the technical problem to be solved by the present invention is how to achieve higher color gamut coverage and color temperature adjustment of the laser display system.
  • the present invention provides a laser display system including a red semiconductor laser module, a green semiconductor laser module, a blue semiconductor laser module, a collimating shaping device, a decoherence device, a light valve, and an imaging lens.
  • the alignment light shaping device and the decoherer are sequentially disposed on the output optical paths of the red semiconductor laser module, the green semiconductor laser module, and the blue semiconductor laser module; the three laser beams processed by the decoherer first pass through the self-light The light valve on the road is then photo-combined; or the light is first combined, then enters the same light valve, and then the image is presented on the screen through the imaging lens.
  • the red semiconductor laser module outputs a wavelength range of 635 nm to 670 nm; the green semiconductor laser module outputs a wavelength range of 515 nm to 530 nm; and the blue semiconductor laser module outputs a wavelength range of 440 nm to 460 nm.
  • the laser display system further includes a temperature control module and three heat dissipation modules; the red semiconductor laser module, the green semiconductor laser module and the blue semiconductor laser module are respectively fixed on a heat dissipation module;
  • the control module controls the heat dissipation of the three heat dissipation modules to control the wavelength of the emitted laser light.
  • the temperature can be controlled by the temperature control module to adjust the wavelength of the semiconductor laser module at a particular output power, especially at higher power.
  • the red semiconductor laser module comprises at least one red semiconductor laser unit, each of the semiconductor laser units having a difference in center wavelength and a combination thereof covering a wavelength range of the output of the red semiconductor laser module;
  • the green light semiconductor laser module includes at least one green light semiconductor laser unit, each of the green light half The center wavelengths of the conductor laser units are different and their combination can cover the wavelength range of the output of the green semiconductor laser module;
  • the blue semiconductor laser module includes at least one blue semiconductor laser unit, the center of each of the blue semiconductor laser units The wavelengths are different and their combination can cover the wavelength range of the output of the blue semiconductor laser module.
  • the semiconductor laser unit is composed of a semiconductor laser single tube or a semiconductor laser array.
  • the laser display system further includes a semiconductor laser control module, wherein the semiconductor laser control module can respectively control the red semiconductor laser unit and the green semiconductor laser module in the red semiconductor laser module
  • the blue semiconductor laser unit in the green semiconductor laser unit and the blue semiconductor laser module selects a semiconductor laser unit of a suitable center wavelength in the red, green, and blue semiconductor laser modules to emit light according to the displayed color requirement, thereby forming
  • the chromaticity triangle covers the corresponding color region; the color range covered by the corresponding chromaticity triangle formed by the mutual wavelength combination of the red, green and blue semiconductor laser units is the color range that can be covered by a laser display system of the present invention. It is apparent that the gamut coverage is larger than the chromaticity triangle formed by the single-wavelength red, green, and blue primary lasers.
  • the means for performing the optical combining is a light combiner, in particular an X prism, a TIR prism or a spatial timing combining device.
  • the light valve is a transmissive liquid crystal light valve, a reflective liquid crystal light valve or a digital micro mirror.
  • the collimating shaping device is an aspherical lens, a cylindrical lens, or a spherical lens
  • the decohering device is a micro-optical device, a vibrating mirror, a rotating wave plate, a multimode fiber or a beam scanner.
  • a laser display system including a red semiconductor laser module, a green semiconductor laser module, a blue semiconductor laser module, a collimating shaping device, a decoherence device, a reflective film, a light guide plate, and a liquid crystal panel are provided.
  • the red light semi-guide The collimation shaping device and the decoherer are sequentially arranged on the output optical path of the bulk laser module, the green semiconductor laser module and the blue semiconductor laser module; the three laser beams processed by the decoherer are sequentially passed through the reflective film, the light guide plate and the liquid crystal panel.
  • the red semiconductor laser module comprises at least two red semiconductor laser units, the green semiconductor laser module comprising at least two green semiconductor laser units, the blue semiconductor laser module comprising at least two blue semiconductors a laser unit, wherein a center wavelength of each of the red semiconductor laser units is selected from 635 nm to 670 nm; a center wavelength of each of the green semiconductor laser units is selected from 515 nm to 530 nm; and a center wavelength of each of the blue semiconductor laser units is selected from 440 nm —— 460 nm, the center wavelength of each semiconductor laser unit is different; the system further includes a semiconductor laser control module, and the semiconductor laser control module can respectively control the red semiconductor laser unit and the green half in the red semiconductor laser module guide
  • the green semiconductor laser unit in the laser module and the blue semiconductor laser unit in the blue semiconductor laser module select a semiconductor laser unit of a suitable center wavelength according to the color requirement of the display to emit light, so that the formed chromaticity triangle covers the corresponding color. region.
  • a laser light source including a red semiconductor laser module, a green semiconductor laser module, and a blue semiconductor laser module, the red semiconductor laser module including at least one red semiconductor laser unit,
  • the green semiconductor laser module includes at least one green semiconductor laser unit including at least one blue semiconductor laser unit, at least one of the red semiconductor laser module, the green semiconductor laser module, and the blue semiconductor laser module Including at least two semiconductor laser units, the center wavelengths of the semiconductor laser units being different; the system further comprising a semiconductor laser control module, the semiconductor laser control module respectively controlling the red semiconductor in the red semiconductor laser module
  • the laser unit, the green semiconductor laser unit in the green semiconductor laser module, and the blue semiconductor laser unit in the blue semiconductor laser module are selected according to the color requirements of the display. Suitable central wavelength of the semiconductor laser units to emit light, so that the shape The resulting chromaticity triangle covers the corresponding color area.
  • the invention provides a laser display system.
  • the invention adopts a wavelength-adjustable three-primary LD module as a laser light source, which can achieve greater color gamut coverage, and display colors are more abundant and more vivid.
  • the wavelength and power of the red, green and blue semiconductor lasers By adjusting the wavelength and power of the red, green and blue semiconductor lasers, the color temperature of the display can also be adjusted, which can be used in the field of large-screen laser display seamless splicing.
  • the system not only has the usual advantages of laser display, but also has the advantages of electric excitation, high efficiency, long life, all solid state, miniaturization, low cost, adjustable color temperature and higher color gamut.
  • FIG. 1 is a schematic structural view of a laser display system according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of color gamut coverage of a laser display system according to a preferred embodiment of the present invention
  • FIG. 3 is a schematic structural view of a laser display system according to another preferred embodiment of the present invention.
  • FIG. 4 is a timing schematic diagram of a laser display system according to another preferred embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a laser display system according to another preferred embodiment 3 of the present invention.
  • the laser display system includes a red semiconductor laser module 1, a green semiconductor laser module 2, and a blue semiconductor laser module 3.
  • the red phase semiconductor laser module 1 is fixed on the heat dissipation module 16-1, and comprises five red semiconductor laser units having center wavelengths of 635 nm, 640 nm, 650 nm, and 660 nm, respectively.
  • the green semiconductor laser module 2 is fixed to the heat dissipation module 16- 2, which comprises three green-light semiconductor laser units having center wavelengths of 515 nm, 520 nm, and 530 nm, respectively, and sequentially arranging a green collimating shaping lens 5, a green decoherer 8, and a green light valve 13 on the output optical path thereof.
  • the optical beam combiner 15 is fixed on the heat dissipation module 16-3, and comprises three blue semiconductor laser units with central wavelengths of 440 nm, 450 nm, and 460 nm, respectively.
  • Blu-ray collimator lens disposed in shaping the output light path sequence 6, 9 decoherence blue, blue light valve 14, the optical combiner 15.
  • the output optical path of the optical combiner sequentially sets the imaging lens 19 and the screen 20.
  • a red mirror 10 is disposed between the red decoherer 7 and the red light valve 12; a red mirror 11 is disposed between the blue decoherer 9 and the blue light valve 13.
  • the semiconductor laser unit is composed of a semiconductor laser single tube or a semiconductor laser array.
  • the collimating shaping device is an aspherical lens, a cylindrical lens, or a spherical lens.
  • the laser display system further includes a temperature control module 17 and a semiconductor laser control module 18, and the temperature control module 17 can respectively control the heat dissipation amount of the heat dissipation modules 16-1, 16-2, and 16-3, thereby controlling the red light.
  • the long semiconductor laser unit illuminates it so that a higher color gamut coverage than the prior art can be achieved.
  • a red semiconductor laser unit with a center wavelength of 635 nm in the red semiconductor laser module 1 to emit light through a semiconductor laser control module
  • a green semiconductor laser unit with a center wavelength of 530 nm in the green semiconductor laser module 2 emits light
  • the blue semiconductor laser module A blue semiconductor laser unit having a center wavelength of 440 nm emits light, and its chromaticity triangle is as shown in FIG.
  • the green laser diode unit having a central wavelength of 515 nm in the green semiconductor laser module 2 can be controlled by the semiconductor laser control module.
  • the newly formed chroma triangle covers a portion of the color region that is not covered by the first chroma triangle, extending the color gamut coverage of the display.
  • the color regions covered by the chromatic triangles formed by any combination of semiconductor laser units of different center wavelengths in the red, green and blue semiconductor laser modules in this embodiment are all laser display systems of the present invention.
  • the decoherers 7, 8, 9 used in this embodiment can be constructed by using a vibrating mirror, a rotating wave plate, etc.; the light valves 12, 13, 14 are transmissive liquid crystal light valves; the optical combiner 15 is X Prism.
  • the lasers at the output end of the red semiconductor laser module 1, the green semiconductor laser module 2, and the blue semiconductor laser module 3 are respectively incident on the light valve through the collimating shaping lens and the decoherence, and the signal source is converted to add the digital modulation signal to the light valve.
  • the red, green, and blue images of different gray levels are controlled by the on and off of the light valve unit.
  • the modulated three primary color lasers with different gray levels are combined into a beam by the combiner 15 to be incident on the imaging lens 19, so that the three color images are combined into one color image, and then the color image is projected to a certain distance.
  • Large color gamut laser display is available on screen 20.
  • a laser display system of the embodiment includes a red semiconductor laser mode Block 1, green semiconductor laser module 2, blue semiconductor laser module 3, decoherence, light valve, collimation shaping device, the red semiconductor laser module 1 is fixed on the heat dissipation module 16-1, which includes 3 red
  • the optical semiconductor laser unit has center wavelengths of 635 nm, 650 nm, and 670 nm, respectively, and a red light collimating shaping lens 4, a red decoherer 7, a light combiner 15, and a monolithic light valve 21 are sequentially disposed on the output optical path thereof;
  • the green-light semiconductor laser module 2 is fixed on the heat-dissipating module 16-2, and comprises two green-light semiconductor laser units having center wavelengths of 515 nm and 530 nm, respectively, and sequentially arranging a green collimating shaping
  • a blue collimating shaping lens 6, a blue decoherer 9, an optical combiner 15, and a monolithic light valve 21 are sequentially disposed in the output optical path.
  • the output optical path of the optical combiner sequentially sets the imaging lens 19 and the screen 20.
  • a red mirror 10 is disposed between the red decoherer 7 and the optical combiner; a red mirror 11 is disposed between the blue decoherer 9 and the optical combiner 15.
  • the semiconductor laser unit is composed of a semiconductor laser single tube or a semiconductor laser array.
  • the collimating shaping device is an aspherical lens, a cylindrical lens, or a spherical lens.
  • the laser display system further includes a temperature control module 17 and a semiconductor laser control module 18, and the temperature control module 17 can respectively control the heat dissipation amount of the heat dissipation modules 16-1, 16-2, and 16-3, thereby controlling the red light.
  • Semiconductor laser module 1, green semiconductor laser module 2, blue semiconductor laser module 3, temperature and wavelength under specific output power (especially high power); semiconductor laser control module 18 can select a suitable central wavelength semiconductor laser unit according to display color requirements It is made to emit light, so that higher color gamut coverage than the prior art can be achieved.
  • a red semiconductor laser unit with a center wavelength of 635 nm in the red semiconductor laser module 1 to emit light through a semiconductor laser control module
  • a green semiconductor laser unit with a center wavelength of 530 nm in the green semiconductor laser module 2 emits light
  • the blue semiconductor laser module A blue semiconductor laser unit having a center wavelength of 440 nm emits light, and its chromaticity triangle is as shown by the right triangle in FIG.
  • the semiconductor laser control module can control the blue semiconductor laser unit with a center wavelength of 460 nm in the blue semiconductor laser module 3 to emit light, and the newly formed chromatic triangle is covered.
  • the partial color area not covered by the first chromaticity triangle extends the gamut coverage of the display.
  • the color regions covered by the chromatic triangles formed by any combination of semiconductor laser units of different center wavelengths in the red, green and blue semiconductor laser modules in this embodiment are all laser display systems of the present invention.
  • the color that can be covered significantly improves the gamut coverage of the laser display.
  • the red semiconductor laser module 1, the green semiconductor laser module 2, and the blue semiconductor laser module 3 of the present embodiment adopt a time-series illumination method, are combined by the optical combiner 15, and then adopt a monolithic light valve 21 for time division modulation. Achieve three primary color synthesis.
  • the monolithic light valve used is a digital micromirror (DMD); after passing through the light collimating shaping device and the decoherer at the output end of the red semiconductor laser module 1, the green semiconductor laser module 2, and the blue semiconductor laser module 3
  • the beam space timing combining device is synthesized into a beam incident on the monolithic light valve, and the signal source is converted to add a digital modulation signal to the monolithic light valve for time-division modulation of the red, green and blue lasers.
  • the on/off of the monolithic light valve 21 controls the red, green, and blue images that generate different gray levels to be incident on the imaging lens system 19, and then the three primary color images are projected onto the screen 20 at a certain distance to achieve a large The gamut is displayed. Due to the visual persistence effect of the human eye and the illumination interval of the three primary color LD modules is much smaller than the human eye distinguishable time interval, the three color images observed by the human eye are combined into a pair of color images to realize large color gamut laser display.
  • FIG. 5 is a schematic structural diagram of a laser display system according to another preferred embodiment 3 of the present invention; this embodiment is a specific embodiment of a laser display system of the present invention for liquid crystal backlight display.
  • the system of the present embodiment includes a red semiconductor laser module 1, a green semiconductor laser module 2, a blue semiconductor laser module 3, a decoherer, a collimating shaping device, a liquid crystal panel 24, a light guide plate 23, and a reflective film 22, the red Optical semiconductor laser module 1 is fixed on the heat dissipation module 16-1, which comprises two red semiconductor laser units with central wavelengths of 635 nm and 670 nm, respectively, and a red light collimating shaping lens 4 and a red decoherence device 7 are sequentially disposed on the output optical path thereof.
  • the reflective film 22, the light guide plate 23, and the liquid crystal panel 24; the green semiconductor laser module 2 is fixed on the heat dissipation module 16-2, and includes two green semiconductor laser units having center wavelengths of 515 nm and 530 nm, respectively.
  • the green light collimating shaping lens 5, the green decoherence device 8, the reflective film 22, the light guide plate 23, and the liquid crystal panel 24 are sequentially disposed on the optical path;
  • the blue semiconductor laser module 3 is fixed on the heat dissipation module 16-3, and includes 2
  • the blue semiconductor laser units have a central wavelength of 440 nm and 460 nm, respectively, and a blue collimating shaping lens 6, a blue decoherer 9, a light reflecting film 22, a light guiding plate 23, and a liquid crystal panel 24 are sequentially disposed in the output optical path.
  • the semiconductor laser unit is composed of a semiconductor laser single tube or a semiconductor laser array.
  • the collimating shaping device is an aspherical lens, a cylindrical lens, or a spherical lens.
  • the laser display system further includes a temperature control module 17 and a semiconductor laser control module 18, and the temperature control module 17 can respectively control the heat dissipation amount of the heat dissipation modules 16-1, 16-2, and 16-3, thereby controlling the red light.
  • red semiconductor laser unit with a center wavelength of 635 nm in the red semiconductor laser module 1 to emit light through a semiconductor laser control module
  • green semiconductor laser unit with a center wavelength of 530 nm in the green semiconductor laser module 2 emits light
  • blue semiconductor laser module A blue semiconductor laser unit having a center wavelength of 440 nm emits light, and its chromaticity triangle is as shown by the right triangle of FIG.
  • the semiconductor laser control module can control the red semiconductor laser unit with the center wavelength of 670 nm in the red semiconductor laser module 1 to emit light, so that Covers a portion of the color area that is not covered by the first chromaticity triangle, extending the gamut coverage of the display.
  • the color regions covered by the chromatic triangle formed by any combination of semiconductor laser units of different center wavelengths in the red, green, and blue semiconductor laser modules in the present embodiment are all capable of the laser display system of the present invention.
  • the color of the overlay significantly improves the gamut coverage.
  • the liquid crystal panel 24 functions the same as the light valve.
  • the laser light emitted by the red semiconductor laser module 1, the green semiconductor laser module 2, and the blue semiconductor laser module 3 is respectively mixed by a laser collimation shaping device and a decoherer, and then passed through a reflective film and a light guide plate to reach the liquid crystal panel.
  • the signal source is converted to add a digital modulation signal to the liquid crystal panel, and the red, green, and blue color images of different gray levels are controlled by the rotation of the liquid crystal unit.
  • the three-color images on the liquid crystal panel are combined into a pair of color images to realize large color gamut laser display.
  • the laser display system of the invention adopts a wavelength-adjustable three-primary LD module as a laser light source to realize the largest possible chromaticity triangle area, and the display color is richer and more vivid, which not only has the usual advantages of laser display, but also has Electrical excitation, high efficiency, long life, solid state, miniaturization, low cost, adjustable color temperature, and higher color gamut, enabling laser display of greater color gamut coverage and seamless splicing for large screen displays.
  • the above description of the invention is applicable to a transmissive display system, but for those skilled in the art, a reflective display system can be used to derive different solutions based on the inventive idea without any creative effort. Therefore, the solution of the reflective display system is also the main content of the present invention.

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Abstract

激光显示系统包括红光半导体激光器模块（1）、绿光半导体激光器模块（2）、蓝光半导体激光器模块（3）、消相干器（7、8、9）、光阀（12、13、14）、准直整形装置（4、5、6）、散热模块（16-1、16-2、16-3）、温控模块（17）及半导体激光器控制模块（18），所述红光半导体激光器模块（1）输出波长范围为635nm-670nm；所述绿光半导体激光器模块（2）输出波长范围为515nm-530nm；所述蓝光半导体激光器模块（3）输出波长范围为440nm-460nm。通过波长可调实现尽可能大的色度三角形面积，显示色彩更加丰富、鲜艳，不仅具有激光显示通常的优点，并且具有电激发、高效率、长寿命、全固态、小型化、成本低廉、色温可调的优势，从而实现激光显示更大色域覆盖并可用于如大屏幕无缝拼接等特殊需求。

Description

一种激光显示系统 技术领域
本发明涉及激光显示技术领域，更具体涉及一种激光显示系统。
背景技术
激光具有高亮度，因此激光显示更易达到人眼几何分辨极限的大屏幕显示；激光是线谱，如激光的谱宽为5nm，而现有显示器光谱宽度为40nm，那么激光显示所能呈现的颜色数比现有显示器提高约500倍，因此激光显示能够实现双高清；同时激光具有更高的色饱和度，通过选择接近色度三角形顶角的三基色波长可使形成的色度三角形面积尽可能大，显示自然界更真实、更丰富的色彩，通过激光全息技术可以实现真三维显示。因此，激光显示是未来显示技术的发展方向。采用三基色半导体激光器LD模块作为激光显示的光源具有电激发、高效率、长寿命、全固态、小型化、成本低廉，因此，红、绿、蓝三基色LD模块是未来激光显示产业化的最佳光源。
由于目前三基色LD正处于产业化攻关阶段，性能和价格并不能满足激光显示产业化的需求，因此目前激光显示的报道多采用全固态激光或者混合光源获得三基色光源。如2006年，中科院采用全固态激光作为三基色光源，实现了84英寸、140英寸激光电视系列化样机演示；2009年，日本三菱采用固体激光器和LD混合光源研制出65英寸、75英寸激光电视；2010年，日本卡西欧研制出LD、LED和荧光粉混合光源的激光投影样机；2011年三菱又研制出了采用LD模块和LED混合照明的液晶电视。采用全固态激光作为三基色光源不能规模化量产，并且波长不可调、结构复杂、效率低；采用LD模块和荧光粉混合光源由于荧光光谱较宽，不能充分体现激光显示的优势。
发明内容
(一)要解决的技术问题
本发明要解决的技术问题是如何实现激光显示系统更高的色域覆盖和色温可调节。
(二)技术方案
为了解决上述技术问题，本发明提供了一种激光显示系统，包括红光半导体激光器模块、绿光半导体激光器模块、蓝光半导体激光器模块、准直整形装置、消相干器、光阀、成像镜头，
所述红光半导体激光器模块、绿光半导体激光器模块和蓝光半导体激光器模块的输出光路上均顺序安置准直整形装置和消相干器；经过所述消相干器处理后的三束激光首先经过自身光路上的光阀，然后进行光合束；或首先进行光合束，然后进入同一光阀，然后通过所述成像镜头在屏幕上呈现图像。
所述红光半导体激光器模块输出的波长范围为635nm—670nm；所述绿光半导体激光器模块输出的波长范围为515nm—530nm；所述蓝光半导体激光器模块输出的波长范围为440nm—460nm。
优选地，所述一种激光显示系统还包括温控模块以及三个散热模块；所述红光半导体激光器模块、绿光半导体激光器模块和蓝光半导体激光器模块分别固定在一个散热模块上；所述温控模块分别控制所述三个散热模块的散热量，从而控制所发射激光的波长。通过温控模块可以控制温度来调节半导体激光器模块在特定输出功率，特别是较大功率下的波长。
优选地，所述红光半导体激光器模块至少包括一个红光半导体激光器单元，每个所述半导体激光器单元的中心波长有差异并且它们的组合能覆盖所述红光半导体激光器模块输出的波长范围；所述绿光半导体激光器模块至少包括一个绿光半导体激光器单元，每个所述绿光半 导体激光器单元的中心波长有差异并且它们的组合能覆盖所述绿光半导体激光器模块输出的波长范围；所述蓝光半导体激光器模块至少包括一个蓝光半导体激光器单元，每个所述蓝光半导体激光器单元的中心波长有差异并且它们的组合能覆盖所述蓝光半导体激光器模块输出的波长范围。
所述半导体激光器单元由半导体激光器单管或半导体激光器阵列组成。
优选地，所述一种激光显示系统还包括半导体激光器控制模块，所述半导体激光器控制模块可分别控制所述红光半导体激光器模块中的所述红光半导体激光器单元、绿光半导体激光器模块中的所述绿光半导体激光器单元、蓝光半导体激光器模块中的所述蓝光半导体激光器单元，根据显示的色彩要求选择红、绿、蓝半导体激光器模块中合适中心波长的半导体激光器单元使其发光，从而使形成的色度三角形覆盖相应的颜色区域；通过红、绿、蓝半导体激光器单元的相互波长组合所形成的相应色度三角形能覆盖的颜色范围即本发明的一种激光显示系统所能覆盖的颜色范围，显然其色域覆盖率比单一波长的红、绿、蓝三基色激光形成的色度三角形要大。
优选地，进行所述光合束的装置是光合束器，具体为X棱镜、TIR棱镜或空间时序合束装置。
优选地，所述光阀为透射式液晶光阀、反射式液晶光阀或数字微镜。
优选地，所述准直整形装置为非球面透镜、柱透镜、或者球面透镜；所述消相干器为微光学器件、震动反射镜、旋转波片、多模光纤或光束扫描器。
根据本发明的另一方面，提供一种激光显示系统，包括红光半导体激光器模块、绿光半导体激光器模块、蓝光半导体激光器模块、准直整形装置、消相干器、反光膜、导光板、液晶面板，所述红光半导 体激光器模块、绿光半导体激光器模块和蓝光半导体激光器模块的输出光路上均顺序安置准直整形装置和消相干器；经过消相干器处理后的三束激光顺序经过反光膜、导光板、液晶面板获得清晰图像；所述红光半导体激光器模块包括至少两个红光半导体激光器单元，所述绿光半导体激光器模块包括至少两个绿光半导体激光器单元，所述蓝光半导体激光器模块包括至少两个蓝光半导体激光器单元，所述各红光半导体激光器单元的中心波长选自635nm—670nm；所述各绿光半导体激光器单元的中心波长选自515nm—530nm；所述各蓝光半导体激光器单元的中心波长选自440nm—460nm，各半导体激光器单元的中心波长有差异；所述系统还包括半导体激光器控制模块，所述半导体激光器控制模块可分别控制所述红光半导体激光器模块中的红光半导体激光器单元、绿光半导体激光器模块中的绿光半导体激光器单元、蓝光半导体激光器模块中的蓝光半导体激光器单元，根据显示的色彩要求选择合适中心波长的半导体激光单元，使其发光，从而使形成的色度三角形覆盖相应的颜色区域。
根据本发明的再一方面，提供一种激光光源，包括红光半导体激光器模块、绿光半导体激光器模块、蓝光半导体激光器模块，所述红光半导体激光器模块包括至少一个红光半导体激光器单元，所述绿光半导体激光器模块包括至少一个绿光半导体激光器单元，所述蓝光半导体激光器模块包括至少一个蓝光半导体激光器单元，所述红光半导体激光器模块、绿光半导体激光模块和蓝光半导体激光模块中的至少一个包括至少两个半导体激光器单元，所述各半导体激光器单元的中心波长有差异；所述系统还包括半导体激光器控制模块，所述半导体激光器控制模块分别控制所述红光半导体激光器模块中的红光半导体激光器单元、绿光半导体激光器模块中的绿光半导体激光器单元、蓝光半导体激光器模块中的蓝光半导体激光器单元，根据显示的色彩要求选择具有合适中心波长的半导体激光器单元，使其发光，从而使形 成的色度三角形覆盖相应的颜色区域。
(三)有益效果
本发明提供了一种激光显示系统，本发明采用波长可调控的三基色LD模块作为激光光源，可实现更大的色域覆盖率，显示色彩更为丰富，更加鲜艳。通过调节红、绿、蓝三基色半导体激光器的波长和功率，还可实现显示器的色温调节，可用于大屏幕激光显示无缝拼接等领域。该系统不仅具有激光显示通常的优点，并且具有电激发、高效率、长寿命、全固态、小型化、成本低廉、色温可调、更高色域的优势。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的一个较佳实施例一的一种激光显示系统的结构示意图；
图2为本发明的一个较佳实施例一的一种激光显示系统的色域覆盖示意图；
图3为本发明的另一个较佳实施例二的一种激光显示系统的结构示意图；
图4为本发明的另一个较佳实施例二的一种激光显示系统的时序原理图；
图5为本发明的另一个较佳实施例三的一种激光显示系统的结构示意图。
具体实施方式
下面结合附图和实施例对本发明作进一步详细描述。以下实施例用于说明本发明，但不能用来限制本发明的范围。
实施例一
图1为本发明的一个较佳实施例一的一种激光显示系统的结构示意图；所述一种激光显示系统包括红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3、消相干器、光阀、准直整形装置，所述红光半导体激光器模块1固定于散热模块16-1上，其包含5个红光半导体激光器单元，中心波长分别为635nm、640nm、650nm、660nm、670nm，在其输出光路上顺序安置红光准直整形透镜4、红光消相干器7、红光光阀12、光合束器15；所述绿光半导体激光器模块2固定于散热模块16-2上，其包含3个绿光半导体激光器单元，中心波长分别为515nm、520nm、530nm，在其输出光路上顺序安置绿光准直整形透镜5、绿光消相干器8、绿光光阀13、光合束器15；所述蓝光半导体激光器模块3固定于散热模块16-3上，其包含3个蓝光半导体激光器单元，中心波长分别为440nm、450nm、460nm，在其输出光路顺序安置蓝光准直整形透镜6、蓝光消相干器9、蓝光光阀14、光合束器15。所述光合束器的输出光路顺序设置成像镜头19和屏幕20。所述红光消相干器7与红光光阀12之间设置红光反射镜10；所述蓝光消相干器9与蓝光光阀13之间设置红光反射镜11。所述半导体激光器单元由半导体激光器单管或半导体激光器阵列组成。所述准直整形装置为非球面透镜、柱透镜、或者球面透镜。
所述一种激光显示系统还包括温控模块17和半导体激光器控制模块18，所述温控模块17可分别控制散热模块16-1、16-2、16-3的散热量，从而控制红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3的特定功率(特别是较大功率)下的温度和波长；半导体激光器控制模块18可根据显示器色彩要求自动选择合适中心波 长的半导体激光器单元使其发光，从而可以实现比现有技术更高的色域覆盖。比如我们通过半导体激光器控制模块选择红光半导体激光器模块1中中心波长为635nm的红光半导体激光器单元发光，绿光半导体激光器模块2中中心波长为530nm的绿光半导体激光器单元发光，蓝光半导体激光器模块3中中心波长为440nm的蓝光半导体激光器单元发光，其色度三角形如图2所示。根据显示的色彩要求，为了显示图2中上述色度三角形左边一区域没有覆盖的部分颜色，通过半导体激光器控制模块可以控制绿光半导体激光器模块2中的中心波长为515nm的绿光半导体激光器单元发光，新组成的色度三角形就覆盖了第一个色度三角形所没有覆盖的部分颜色区域，扩展了显示器的色域覆盖率。同样道理，本实施例中红、绿、蓝半导体激光器模块中的不同中心波长的半导体激光器单元之间任意组合形成的色度三角形所能覆盖的颜色区域都是本发明的一种激光显示系统所能覆盖的颜色范围，从而显著提高了色域覆盖率。
该实施例采用的消相干器7、8、9可采用震动反射镜、旋转波片等方式构成；采用的光阀12、13、14是透射式液晶光阀；采用的光合束器15是X棱镜。在红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3输出端激光分别经过准直整形透镜和消相干器入射到光阀，信号源经过转换将数字调制信号加到光阀上，通过光阀单元的通断来控制产生不同灰度层次的红色、绿色、蓝色图像。经调制后带有不同灰度层次的三基色激光通过合束器15合为一束入射到成像镜头19中，这样三色图像就合为一副彩色图像，再将彩色图像投射到一定距离的屏幕20上即可实现大色域激光显示。
实施例二
图3为本发明的另一个较佳实施例二的一种激光显示系统的结构示意图；图4为本发明的另一个较佳实施例二的一种激光显示系统的时序原理图。本实施例的一种激光显示系统包括红光半导体激光器模 块1、绿光半导体激光器模块2、蓝光半导体激光器模块3、消相干器、光阀、准直整形装置，所述红光半导体激光器模块1固定于散热模块16-1上，其包含3个红光半导体激光器单元，中心波长分别为635nm、650nm、670nm，在其输出光路上顺序安置红光准直整形透镜4、红光消相干器7、光合束器15、单片式光阀21；所述绿光半导体激光器模块2固定于散热模块16-2上，其包含2个绿光半导体激光器单元，中心波长分别为515nm、530nm，在其输出光路上顺序安置绿光准直整形透镜5、绿光消相干器8、光合束器15、单片式光阀21；所述蓝光半导体激光器模块3固定于散热模块16-3上，其包含3个蓝光半导体激光器单元，中心波长分别为440nm、450nm、460nm，在其输出光路顺序安置蓝光准直整形透镜6、蓝光消相干器9、光合束器15、单片式光阀21。所述光合束器的输出光路顺序设置成像镜头19和屏幕20。所述红光消相干器7与光合束器之间设置红光反射镜10；所述蓝光消相干器9与光合束器15之间设置红光反射镜11。所述半导体激光器单元由半导体激光器单管或半导体激光器阵列组成。所述准直整形装置为非球面透镜、柱透镜、或者球面透镜。
所述一种激光显示系统还包括温控模块17和半导体激光器控制模块18，所述温控模块17可分别控制散热模块16-1、16-2、16-3的散热量，从而控制红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3特定输出功率(特别是大功率)下的温度和波长；半导体激光器控制模块18可根据显示器色彩要求选择合适中心波长的半导体激光器单元使其发光，从而可以实现比现有技术更高的色域覆盖。比如我们通过半导体激光器控制模块选择红光半导体激光器模块1中中心波长为635nm的红光半导体激光器单元发光，绿光半导体激光器模块2中中心波长为530nm的绿光半导体激光器单元发光，蓝光半导体激光器模块3中中心波长为440nm的蓝光半导体激光器单元发光，其色度三角形如图2中右边三角形所示。根据显示的色彩要求， 为了显示上述色度三角形左下角一区域没有覆盖的颜色部分，通过半导体激光器控制模块可以控制蓝光半导体激光器模块3中的中心波长为460nm的蓝光半导体激光器单元发光，新组成的色度三角形就覆盖了第一个色度三角形所没有覆盖的部分颜色区域，扩展了显示器的色域覆盖。同样道理，本实施例中红、绿、蓝半导体激光器模块中的不同中心波长的半导体激光器单元之间任意组合形成的色度三角形所能覆盖的颜色区域都是本发明的一种激光显示系统所能覆盖的颜色，显著提高了激光显示色域覆盖率。
本实施例的红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3采用时序发光的方式，经光合束器15进行合束，然后采用单片式光阀21分时调制方式实现三基色合成。采用的单片式光阀是数字微镜(DMD)；在红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3输出端激光经过光准直整形装置和消相干器后通过光束空间时序合束装置合成为一束入射到单片式光阀，信号源经过转换将数字调制信号加到对红、绿、蓝三基色激光分时调制的单片式光阀上，通过所述单片式光阀21的通断来控制产生不同灰度层次的红色、绿色、蓝色图像入射到成像镜头系统19上，再将三基色图像投射到一定距离的屏幕20上即可实现大色域显示。由于人眼的视觉暂留效应并且三基色LD模块发光间隔远远小于人眼可分辨时间间隔，通过人眼观察的三色图像就合为一副彩色图像，实现大色域激光显示。
实施例三
图5为本发明的另一个较佳实施例三的一种激光显示系统的结构示意图；本实施例是将本发明的一种激光显示系统用于液晶背光显示的具体实施例。本实施例的系统包括红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3、消相干器、准直整形装置、液晶面板24、导光板23、反光膜22，所述红光半导体激光器模块 1固定于散热模块16-1上，其包含2个红光半导体激光器单元，中心波长分别为635nm、670nm，在其输出光路上顺序安置红光准直整形透镜4、红光消相干器7、反光膜22、导光板23、液晶面板24；所述绿光半导体激光器模块2固定于散热模块16-2上，其包含2个绿光半导体激光器单元，中心波长分别为515nm、530nm，在其输出光路上顺序安置绿光准直整形透镜5、绿光消相干器8、反光膜22、导光板23、液晶面板24；所述蓝光半导体激光器模块3固定于散热模块16-3上，其包含2个蓝光半导体激光器单元，中心波长分别为440nm、460nm，在其输出光路顺序安置蓝光准直整形透镜6、蓝光消相干器9、反光膜22、导光板23、液晶面板24。
所述半导体激光器单元由半导体激光器单管或半导体激光器阵列组成。所述准直整形装置为非球面透镜、柱透镜、或者球面透镜。
所述一种激光显示系统还包括温控模块17和半导体激光器控制模块18，所述温控模块17可分别控制散热模块16-1、16-2、16-3的散热量，从而控制红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3在特定输出功率(特别是大功率)下的温度和波长；半导体激光器控制模块18可根据显示器色彩要求选择中心波长合适的半导体激光器单元使其发光，从而可以实现比现有技术更高的色域覆盖。比如我们通过半导体激光器控制模块选择红光半导体激光器模块1中中心波长为635nm的红光半导体激光器单元发光，绿光半导体激光器模块2中中心波长为530nm的绿光半导体激光器单元发光，蓝光半导体激光器模块3中中心波长为440nm的蓝光半导体激光器单元发光，其色度三角形如图2右边三角形所示。根据显示的色彩要求，为了显示上述色度三角形下边一区域没有覆盖的颜色部分，通过半导体激光器控制模块可以控制红光半导体激光器模块1中的中心波长为670nm的红光半导体激光器单元发光，这样就覆盖了第一个色度三角形下边所没有覆盖的部分颜色区域，扩展了显示器的色域覆盖。同样 道理，本实施例中红、绿、蓝半导体激光器模块中的不同中心波长的半导体激光器单元之间任意组合形成的色度三角形所能覆盖的颜色区域都是本发明的一种激光显示系统所能覆盖的颜色，显著提高了色域覆盖率。
所述液晶面板24与所述光阀的作用相同。
所述红光半导体激光器模块1、绿光半导体激光器模块2、蓝光半导体激光器模块3发出的激光分别经过激光准直整形装置、消相干器混合后依次经过反光膜、导光板到达液晶面板。信号源经过转换将数字调制信号加到液晶面板上，通过液晶单元的转动来控制产生不同灰度层次的红色、绿色、蓝色三色图像。通过人眼观察，液晶面板上的三色图像就合为一副彩色图像，实现大色域激光显示。
本发明的一种激光显示系统采用波长可调控的三基色LD模块作为激光光源，实现尽可能大的色度三角形面积，显示色彩更为丰富，更加鲜艳，不仅具有激光显示通常的优点，并且具有电激发、高效率、长寿命、全固态、小型化、成本低廉、色温可调、更高色域的优势，从而实现激光显示更大色域覆盖并可用于大屏幕显示无缝拼接等领域。
显而易见地，上述发明内容描述适用于透射型显示系统，但是对于本领域工程技术人员来讲，对于反射型显示系统可依据此发明思想在不付出创造性劳动的前提下类推获得不同的解决方案。因此，反射型显示系统的解决方案也是本发明的主要内容。
以上实施方式仅用于说明本发明，而非对本发明的限制。尽管参照实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，对本发明的技术方案进行各种组合、修改或者等同替换，都不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。

Claims (10)

  1. 一种激光显示系统，包括红光半导体激光器模块(1)、绿光半导体激光器模块(2)、蓝光半导体激光器模块(3)，和在所述红光半导体激光器模块(1)、绿光半导体激光器模块(2)和蓝光半导体激光器模块(3)的输出光路上均顺序安置的准直整形装置、消相干器、光阀、成像镜头，其特征在于，
    所述红光半导体激光器模块(1)至少包括一个红光半导体激光器单元，所述绿光半导体激光器模块(2)至少包括一个绿光半导体激光器单元，所述蓝光半导体激光器模块(3)至少包括一个蓝光半导体激光器单元，所述红光半导体激光器模块、绿光半导体激光模块和蓝光半导体激光模块中的至少一个包括至少两个相应的半导体激光器单元，所述各红光半导体激光器单元的中心波长选自635nm—670nm；所述各绿光半导体激光器单元的中心波长选自515nm—530nm；所述各蓝光半导体激光器单元的中心波长选自440nm—460nm，各半导体激光器单元的中心波长有差异；
    所述系统还包括半导体激光器控制模块(18)，所述半导体激光器控制模块(18)分别控制所述红光半导体激光器模块(1)中的红光半导体激光器单元、绿光半导体激光器模块(2)中的绿光半导体激光器单元、蓝光半导体激光器模块(3)中的蓝光半导体激光器单元，根据显示的色彩要求选择具有合适中心波长的半导体激光器单元，使其发光，从而使形成的色度三角形覆盖相应的颜色区域。
  2. 根据权利要求1所述的一种激光显示系统，其特征在于，还包括温控模块(17)以及多个散热模块(16-1、16-2、16-3)；所述红光半导体激光器模块(1)、绿光半导体激光器模块(2)和蓝光半导体激光器模块(3)分别固定在不同的散热模块上；所述温控模块(17)分别控制所述多个散热模块的散热量，从而控制所发射激光的波长。
  3. 根据权利要求1所述的一种激光显示系统，其特征在于：
    所述红光半导体激光器模块(1)包括至少两个红光半导体激光器单元；
    所述绿光半导体激光器模块(2)包括至少两个绿光半导体激光器单元；
    所述蓝光半导体激光器模块(3)包括至少两个蓝光半导体激光器单元。
  4. 根据权利要求1所述的一种激光显示系统，其特征在于：所述半导体激光器单元由半导体激光器单管或半导体激光器阵列组成。
  5. 根据权利要求1所述的一种激光显示系统，其特征在于，进行所述光合束的装置是光合束器。
  6. 根据权利要求1所述的一种激光显示系统，其特征在于，进行所述光合束的装置是X棱镜、TIR棱镜或空间时序合束装置。
  7. 根据权利要求1所述的一种激光显示系统，其特征在于，所述光阀为透射式液晶光阀、反射式液晶光阀或数字微镜。
  8. 根据权利要求1所述的一种激光显示系统，其特征在于，所述准直整形装置为非球面透镜、柱透镜、或者球面透镜；所述消相干器(7、8、9)为微光学器件、震动反射镜、旋转波片、多模光纤或光束扫描器。
  9. 一种激光显示系统，包括红光半导体激光器模块(1)、绿光半导体激光器模块(2)、蓝光半导体激光器模块(3)、准直整形装置、消相干器、反光膜、导光板、液晶面板，其特征在于，
    所述红光半导体激光器模块(1)、绿光半导体激光器模块(2)和蓝光半导体激光器模块(3)的输出光路上均顺序安置准直整形装置和消相干器；经过消相干器处理后的三束激光顺序经过反光膜、导光板、液晶面板获得清晰图像；
    所述红光半导体激光器模块(1)包括至少两个红光半导体激光器 单元，所述绿光半导体激光器模块(2)包括至少两个绿光半导体激光器单元，所述蓝光半导体激光器模块(3)包括至少两个蓝光半导体激光器单元，所述各红光半导体激光器单元的中心波长选自635nm—670nm；所述各绿光半导体激光器单元的中心波长选自515nm—530nm；所述各蓝光半导体激光器单元的中心波长选自440nm—460nm，各半导体激光器单元的中心波长有差异；
    所述系统还包括半导体激光器控制模块(18)，所述半导体激光器控制模块(18)可分别控制所述红光半导体激光器模块(1)中的红光半导体激光器单元、绿光半导体激光器模块(2)中的绿光半导体激光器单元、蓝光半导体激光器模块(3)中的蓝光半导体激光器单元，根据显示的色彩要求选择合适中心波长的半导体激光单元，使其发光，从而使形成的色度三角形覆盖相应的颜色区域。
  10. 一种激光光源，包括红光半导体激光器模块(1)、绿光半导体激光器模块(2)、蓝光半导体激光器模块(3)，其特征在于，
    所述红光半导体激光器模块(1)包括至少一个红光半导体激光器单元，所述绿光半导体激光器模块(2)包括至少一个绿光半导体激光器单元，所述蓝光半导体激光器模块(3)包括至少一个蓝光半导体激光器单元，所述红光半导体激光器模块、绿光半导体激光模块和蓝光半导体激光模块中的至少一个包括至少两个半导体激光器单元，所述各半导体激光器单元的中心波长有差异；
    所述系统还包括半导体激光器控制模块(18)，所述半导体激光器控制模块(18)分别控制所述红光半导体激光器模块(1)中的红光半导体激光器单元、绿光半导体激光器模块(2)中的绿光半导体激光器单元、蓝光半导体激光器模块(3)中的蓝光半导体激光器单元，根据显示的色彩要求选择具有合适中心波长的半导体激光器单元，使其发光，从而使形成的色度三角形覆盖相应的颜色区域。
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