CN111458931A - High-brightness backlight source module based on L D pump fluorescent crystal - Google Patents
High-brightness backlight source module based on L D pump fluorescent crystal Download PDFInfo
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- CN111458931A CN111458931A CN202010252789.5A CN202010252789A CN111458931A CN 111458931 A CN111458931 A CN 111458931A CN 202010252789 A CN202010252789 A CN 202010252789A CN 111458931 A CN111458931 A CN 111458931A
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- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133628—Illuminating devices with cooling means
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Abstract
The invention discloses a high-brightness backlight source module based on a L D pumping fluorescent crystal, which comprises a light source fixing frame, a L CD screen and a high-brightness backlight source, wherein a L CD screen is fixed on the front side inside the light source fixing frame, one side of a L CD screen is uniformly connected with the high-brightness backlight source through a light source fixing base, the high-brightness backlight source is distributed on the rear side of a L CD screen in a matrix shape, and the heat dissipation module is used for dissipating heat of a first 450nm laser light source component, a fluorescent crystal component and a second 450nm laser light source component in an air cooling mode.
Description
Technical Field
The invention relates to the technical field of high-brightness backlight sources, in particular to a high-brightness backlight source module based on L D pumping fluorescent crystals.
Background
The L CD (liquid crystal display) product adopts a non-pixel self-luminous display technology, the display performance can be obtained only by depending on the emission of a light source in a backlight module, the backlight module, particularly the quality of the backlight light source directly influences the display quality of a liquid crystal panel, the traditional L CD backlight source widely adopts L ED (light emitting diode), but the L ED has wider spectral line width and larger divergence angle, and the luminance reaching a L CD screen can only reach 200-300 CD/m2。
In recent years, a laser light source with good monochromaticity, good directivity, higher luminance brightness and longer service life is gradually applied to L CD display products as a backlight light source to replace the traditional L ED backlight light source, the laser light source has extremely high brightness and color gray scale, so that the display technology taking the light source as the core has the characteristics of wide color gamut, high color rendering index, high saturation and the like, and particularly can greatly enhance the 3D stereoscopic effect in the field of stereoscopic imaging.
In addition, the traditional L CD mainly comprises a whole large-size display screen, a single backlight device, a main board and other structures, but the requirements of brightness, color temperature, heat dissipation, power and function adjustment of a single light source for realizing large-size L CD display are great challenges, the manufacturing cost is also remarkably improved, and large-scale production is not facilitated.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects, and provide a high-brightness backlight source module based on L D pump fluorescent crystals, which has a simple structure, not only effectively reduces the volume of the high-brightness backlight source, but also can realize convenient and efficient adjustment of the backlight brightness, color temperature and light spot size of a single high-brightness backlight source, and simultaneously can effectively improve the splicing phenomenon during splicing of multiple light source beams, and can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme that the high-brightness backlight light source module based on the L D pumped fluorescent crystal comprises a light source fixing frame, a L CD screen and a high-brightness backlight light source, wherein a L CD screen is fixed on the front side inside the light source fixing frame, one side of the L CD screen is uniformly connected with the high-brightness backlight light source through a light source fixing base, the high-brightness backlight light source is distributed on the rear side of the L CD screen in a matrix shape, the matrix-shaped high-brightness backlight light source can respectively adjust the spot size, the color temperature and the brightness of different areas of the integral L CD screen to emergent spots, the color temperature adjustable range of the L CD screen is 3000K-10000K, and the effective splicing of the spots of different light sources corresponding to the L CD blocks is realized through the three-dimensional allowance adjustment of a single light source module.
Further, high brightness backlight source includes camera lens module, laser source module, heat dissipation module, light source unable adjustment base and circuit control module, and light source unable adjustment base includes the installation base and sets up the connection shell in the installation base upper end, light source unable adjustment base's connection shell left side is equipped with the camera lens module, the laser source module sets up in the connection shell left and right sides of light source unable adjustment base, and light source unable adjustment base and camera lens module control correspond about to the switch and the adjustting of the luminance of first 450nm laser source subassembly and the second 450nm laser source subassembly of circuit control module control laser source module, and the heat dissipation module sets up in one side of laser source module.
Furthermore, the lens module comprises a light homogenizing rod, a lens group is arranged on the left side of the light homogenizing rod, and a scattering sheet is arranged on the right side of the light homogenizing rod, so that the focus of white light emitted by the laser source module is positioned in the center of the light incident surface of the scattering sheet, the scattering sheet can improve the divergence angle of the white light beam on one hand, the white light can be effectively driven into the light homogenizing rod, on the other hand, the coherence of blue laser in the incident light beam can be destroyed, and the speckle phenomenon when the white light beam irradiates the L CD screen can be effectively eliminated.
Further, the laser light source module includes lens and beam splitter, and the beam splitter is located the right side of lens, and lens and beam splitter and camera lens module are located same axis, and the beam splitter is 45 degrees slopes to be placed, the below of beam splitter is equipped with first 450nm laser light source subassembly, and the right side of beam splitter is equipped with second 450nm laser light source subassembly, the top of beam splitter is equipped with the fluorescence crystal subassembly, the fluorescence crystal subassembly corresponds from top to bottom with first 450nm laser light source subassembly, can be to the wavelength conversion of light through the fluorescence crystal subassembly to this converts the blue laser of incidence into greenish yellow light, and the beam splitter is for passing through blue anti-greenish yellow lens, can be to the transmission of blue laser, reflects the excited greenish yellow light of fluorescence crystal.
Furthermore, the first 450nm laser light source assembly comprises a first 450nm laser light source, a first dodging module for beam shaping of blue laser is arranged on one side of the first 450nm laser light source, the first 450nm laser light source can emit blue laser beams, and then the first dodging module is used for beam shaping of the blue laser.
Furthermore, the second 450nm laser light source assembly comprises a second 450nm laser light source, a second dodging module for beam shaping of blue laser is arranged on one side of the second 450nm laser light source, the second 450nm laser light source can emit blue laser beams, and then the second dodging module is used for beam shaping of the blue laser.
Further, the fluorescent crystal assembly comprises a fluorescent crystal, and a convex lens is arranged on the front surface of the fluorescent crystal and used for effectively converging the transmitted blue laser on the surface of the fluorescent crystal and collimating the reflected yellow-green light.
Furthermore, the heat dissipation module comprises a first light source heat dissipation module, a fluorescent crystal heat dissipation module and a second light source heat dissipation module, and the first light source heat dissipation module, the fluorescent crystal heat dissipation module and the second light source heat dissipation module are respectively used for heat dissipation of the surfaces of the first 450nm laser light source component, the fluorescent crystal component and the second 450nm laser light source component.
Further, first light source heat dissipation module, fluorescence crystal heat dissipation module and second light source heat dissipation module are including setting up at first 450nm laser light source subassembly, the integrated heat pipe radiator at fluorescence crystal subassembly and second 450nm laser light source subassembly back, one side of integrated heat pipe radiator is equipped with corresponding fan, can blow to integrated heat pipe radiator through the fan, with this dispel the heat to first 450nm laser light source subassembly, fluorescence crystal subassembly and second 450nm laser light source subassembly, make first 450nm laser light source subassembly, the radiating effect of fluorescence crystal subassembly and second 450nm laser light source subassembly better.
Compared with the prior art, the L D pump fluorescent crystal-based high-brightness backlight light source module has the advantages that:
1. the invention is provided with the high-brightness backlight light source, the high-brightness backlight light source adopts L D laser light source to replace the traditional L ED light source as L CD backlight light source, has obvious advantages in the aspects of directionality and brightness, the brightness reaching the L CD screen can reach more than 1000 CD/m2, and the L D laser light source adopts the technology that L D pumping fluorescent crystal generates yellow green light and then is coupled with blue light to form white light, and the yellow green light is excited by one fluorescent crystal at the same time.
2. The high-brightness backlight source is provided with the first 450nm laser light source component and the second 450nm laser light source component, the brightness is higher through the two laser light sources, the structure is simpler and more compact, the volume of the high-brightness backlight source is effectively reduced, the matrix-shaped high-brightness backlight source is adopted, the backlight brightness, the color temperature and the light spot size of the single high-brightness backlight source can be conveniently and efficiently adjusted, and meanwhile, the splicing phenomenon during splicing of multiple light source light beams can be effectively improved.
3. The heat dissipation module is arranged on the LED fluorescent lamp, and the first 450nm laser light source component, the fluorescent crystal component and the second 450nm laser light source component are dissipated through the heat dissipation module in an air cooling mode, so that compared with a liquid cooling heat dissipation mode, the LED fluorescent lamp is smaller in size and lower in cost.
Drawings
FIG. 1 is a schematic view of a high-brightness backlight module according to the present invention;
FIG. 2 is a schematic diagram of a high-brightness backlight source according to the present invention;
FIG. 3 is a schematic cross-sectional view of a high-brightness backlight source according to the present invention;
FIG. 4 is a schematic diagram of an optical path of a high-brightness backlight source according to the present invention.
In the figure, 1 is a high-brightness backlight source, 11 lens modules, 111 lens groups, 112 light homogenizing rods, 113 scattering sheets, 12 laser source modules, 121 lenses, 122 fluorescent crystal components, 123 light splitting sheets, 124 first 450nm laser source components, 125 second 450nm laser source components, 13 heat dissipation modules, 132 first light source heat dissipation modules, 133 fluorescent crystal heat dissipation modules, 131 second light source heat dissipation modules, 14 light source fixing bases, 15 circuit control modules, 2L CD screens and 3 light source fixing frames.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the invention provides a technical scheme that a high-brightness backlight light source module based on L D pump fluorescent crystals comprises a light source fixing frame 3, a L CD screen 2 and a high-brightness backlight light source 1, wherein the L CD screen 2 is fixed on the front side inside the light source fixing frame 3, one side of the L CD screen 2 is uniformly connected with the high-brightness backlight light source 1 through a light source fixing base 14, the high-brightness backlight light source 1 is distributed on the rear side of the L CD screen 2 in a matrix shape, the matrix-shaped high-brightness backlight light source 1 can respectively adjust the size, the color temperature and the brightness of emergent light spots corresponding to different areas of the whole L CD screen 2, the color temperature adjustable range of the L CD screen 2 is 3000K-10000K, and the splicing phenomenon during multi-light-source light beam splicing can be effectively improved through three-dimensional allowance adjustment of the matrix-shaped high-brightness backlight light source 1.
High luminance backlight source 1 includes camera lens module 11, laser light source module 12, heat dissipation module 13, light source unable adjustment base 14 and circuit control module 15, and light source unable adjustment base 14 is including installation base and the connection shell of setting in the installation base upper end, the inside left side of the connection shell of light source unable adjustment base 14 is equipped with camera lens module 11, laser light source module 12 sets up the inside left and right sides at light source unable adjustment base 14's connection shell to circuit control module 15 controls the switch and the adjustting of the lighteness of first 450nm laser lamp-shade subassembly 124 and second 450nm laser lamp-shade subassembly 125 of laser light source module 12, and heat dissipation module 13 sets up the one side at laser light source module 12.
The lens module 11 includes a light homogenizing rod 112, a lens group 111 is disposed on the left side of the light homogenizing rod 112, and a diffuser 113 is disposed on the right side of the light homogenizing rod 112, so that a focus of white light emitted by the laser source module 12 is located at the center of a light incident surface of the diffuser 113, the diffuser 113 can improve a divergence angle of the white light beam on one hand, so that the white light beam can be effectively incident into the light homogenizing rod 112, and on the other hand, coherence of blue laser in the incident light beam can be destroyed, and a speckle phenomenon when the white light beam irradiates an L CD screen can be effectively eliminated.
The laser light source module 12 includes a lens 121 and a beam splitter 123, the beam splitter 123 is located on the right side of the lens 121, the beam splitter 123 and the lens module 11 are located on the same axis, the beam splitter 123 is obliquely placed at an angle of 45 degrees, a first 450nm laser light source assembly 124 is arranged below the beam splitter 123, a second 450nm laser light source assembly 125 is arranged on the right side of the beam splitter 123, a fluorescent crystal assembly 122 is arranged above the beam splitter 123, the fluorescent crystal assembly 122 vertically corresponds to the first 450nm laser light source assembly 124, wavelength conversion of light can be achieved through the fluorescent crystal assembly 122, incident blue laser light is converted into yellow-green light, the beam splitter 123 is a blue-transparent anti-yellow-green lens, transmission of blue laser light can be achieved, and yellow-green light excited by the fluorescent crystal assembly 122 is reflected.
The first 450nm laser light source assembly 124 comprises a first 450nm laser light source, a first dodging module for beam shaping of blue laser is arranged on one side of the first 450nm laser light source, the first 450nm laser light source can emit blue laser beams, and then the first dodging module is used for beam shaping of the blue laser.
The second 450nm laser light source assembly 125 comprises a second 450nm laser light source, a second light homogenizing module for beam shaping of blue laser is arranged on one side of the second 450nm laser light source, blue laser beams can be emitted through the second 450nm laser light source, then beam shaping of the blue laser is carried out through the second light homogenizing module, and the second 450nm laser light source and the first 450nm laser light source both adopt 1 450nm blue laser diode or a plurality of 450nm blue laser diode arrays.
And the fluorescent crystal assembly 122, the fluorescent crystal assembly 122 includes a fluorescent crystal, and a convex lens is arranged on the front surface of the fluorescent crystal, and is used for effectively converging the transmitted blue laser on the surface of the fluorescent crystal and collimating the reflected yellow-green light.
The heat dissipation module 13 is composed of a first light source heat dissipation module 132, a fluorescent crystal heat dissipation module 133, and a second light source heat dissipation module 131, and the first light source heat dissipation module 132, the fluorescent crystal heat dissipation module 133, and the second light source heat dissipation module 131 are respectively used for heat dissipation of the surfaces of the first 450nm laser light source assembly 124, the fluorescent crystal assembly 122, and the second 450nm laser light source assembly 125.
First light source thermal module 132, fluorescence crystal thermal module 133 and second light source thermal module 131 are including setting up at first 450nm laser light source subassembly 124, the integrated heat pipe radiator at fluorescence crystal subassembly 122 and the second 450nm laser light source subassembly 125 back, one side of integrated heat pipe radiator is equipped with corresponding fan, can blow to integrated heat pipe radiator through the fan, with this to first 450nm laser light source subassembly 124, fluorescence crystal subassembly 122 and second 450nm laser light source subassembly 125 dispel the heat, make first 450nm laser light source subassembly 124, the radiating effect of fluorescence crystal subassembly 122 and second 450nm laser light source subassembly 125 better.
When the LED white light emitting device is used, firstly, the backlight brightness, the color temperature and the spot size of a single high-brightness backlight light source can be conveniently and efficiently adjusted through the matrix-shaped high-brightness backlight light source 1, meanwhile, the seam splicing phenomenon during the splicing of multi-light source light beams can be effectively improved, when the high-brightness backlight light source 1 works, firstly, the circuit control module 15 controls the on-off and brightness adjustment of the first 450nm laser light source component 124 and the second 450nm laser light source component 125, the first 450nm laser light source and the second 450nm laser light source of the first 450nm laser light source component 124 and the second 450nm laser light source 125 emit light, then, the first dodging module and the second dodging module respectively carry out light beam shaping on blue laser light emitted by the first 450nm laser light source and the second 450nm laser light source to obtain homogenized light beam energy, the homogenized light beam energy is emitted into the fluorescent crystal component 122, better fluorescent excitation efficiency can be obtained, the wavelength conversion of the fluorescent crystal 122 light of the fluorescent crystal component can convert blue laser light of the first 450nm laser light source into yellow light, the white light emitted by the fluorescent crystal component, the blue light, the white light is reflected by the fluorescent crystal component 122, the white light can be reflected by the fluorescent light, the fluorescent light emitted into the white light, the white light reflected by the fluorescent light emitted by the fluorescent light, the fluorescent light can be effectively reflected by the fluorescent crystal component 123, the fluorescent light, the fluorescent crystal 123, the white light can be effectively reflected by the fluorescent light, the fluorescent crystal 123, the fluorescent light, the white light emitted by the fluorescent light can be effectively reflected by the fluorescent light emitted by the fluorescent light, the fluorescent light emitted by the fluorescent crystal 123, the fluorescent light emitted by the fluorescent crystal 123, the fluorescent crystal 123.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A high-brightness backlight source module based on L D pump fluorescent crystals is characterized by comprising a light source fixing frame (3), a L CD screen (2) and a high-brightness backlight source (1), wherein the L CD screen (2) is fixed on the front side inside the light source fixing frame (3), one side of the L CD screen (2) is uniformly connected with the high-brightness backlight source (1) through a light source fixing base (14), the high-brightness backlight source (1) is distributed on the rear side of the L CD screen (2) in a matrix shape, the matrix-shaped high-brightness backlight source (1) can adjust the spot size, the color temperature and the brightness of emergent spots corresponding to different areas of the L CD screen (2), the adjustable range of the L CD screen (2) is 3000K-10000K, and the effective splicing of the spots of different light sources corresponding to L CD blocks is achieved through single-light-source module three-dimensional allowance adjustment.
2. The L D-pumped fluorescent crystal-based high-brightness backlight source module as claimed in claim 1, wherein the high-brightness backlight source (1) comprises a lens module (11), a laser source module (12), a heat dissipation module (13), a light source fixing base (14) and a circuit control module (15), the light source fixing base (14) comprises a mounting base and a connecting shell arranged at the upper end of the mounting base, the lens module (11) is arranged on the left side inside the connecting shell of the light source fixing base (14), the laser source module (12) is arranged on the left and right sides inside the connecting shell of the light source fixing base (14), the circuit control module (15) controls the on and off and brightness adjustment of the first 450nm laser source module (124) and the second 450nm laser source module (125) of the laser source module (12), and the heat dissipation module (13) is arranged on one side of the laser source module (12).
3. The L D-pumped fluorescent crystal-based high-brightness backlight source module as claimed in claim 1, wherein the lens module (11) includes a light homogenizing rod (112), the left side of the light homogenizing rod (112) is provided with the lens assembly (111), and the right side of the light homogenizing rod (112) is provided with the diffuser (113), so that the focus of the white light emitted by the laser source module (12) is located at the center of the light incident surface of the diffuser (113), and the diffuser (113) can improve the divergence angle of the white light beam, so that the white light is effectively incident into the light homogenizing rod (112), and can destroy the coherence of the blue laser in the incident light beam, thereby effectively eliminating the speckle phenomenon when the white light beam irradiates on the L CD screen.
4. The L D-based high-brightness backlight source module is characterized in that the laser source module (12) includes a lens (121) and a beam splitter (123), the beam splitter (123) is located on the right side of the lens (121), the lens (121) and the beam splitter (123) are located on the same axis as the lens module (11), the beam splitter (123) is obliquely placed at an angle of 45 degrees, a first 450nm laser source assembly (124) is arranged below the beam splitter (123), a second 450nm laser source assembly (125) is arranged on the right side of the beam splitter (123), a fluorescent crystal assembly (122) is arranged above the beam splitter (123), the fluorescent crystal assembly (122) vertically corresponds to the first 450nm laser source assembly (124), the wavelength of light can be converted through the fluorescent crystal assembly (122), and accordingly, incident blue laser is converted into yellowish green light, the beam splitter (123) is a blue-transmissive yellowish green-transmissive mirror, and can transmit blue laser and reflect yellow green light excited by the fluorescent crystal (122).
5. The L D-pumped fluorescent crystal-based high-brightness backlight source module as claimed in claim 4, wherein the first 450nm laser source assembly (124) comprises a first 450nm laser source, and a first dodging module for beam shaping of blue laser is disposed at one side of the first 450nm laser source.
6. The L D-pumped fluorescent crystal-based high-brightness backlight source module as claimed in claim 4, wherein the second 450nm laser source assembly (125) comprises a second 450nm laser source, and a second dodging module for beam shaping of blue laser is disposed at one side of the second 450nm laser source.
7. The L D-pumped fluorescent crystal-based high-brightness backlight source module as claimed in claim 4, wherein the fluorescent crystal assembly (122), the fluorescent crystal assembly (122) comprises a fluorescent crystal, and a convex lens is disposed on a front surface of the fluorescent crystal for effectively converging the transmitted blue laser light on a surface of the fluorescent crystal and collimating the reflected yellow-green light.
8. The L D-pumped fluorescent crystal-based high-brightness backlight source module as claimed in claim 2, wherein the heat sink module (13) is composed of a first light source heat sink module (132), a fluorescent crystal heat sink module (133), and a second light source heat sink module (131), and the first light source heat sink module (132), the fluorescent crystal heat sink module (133), and the second light source heat sink module (131) are respectively used for heat dissipation of the surfaces of the first 450nm laser light source module (124), the fluorescent crystal module (122), and the second 450nm laser light source module (125).
9. The L D-pumped fluorescent crystal-based high-brightness backlight source module as set forth in claim 8, wherein the first light source heat sink module (132), the fluorescent crystal heat sink module (133) and the second light source heat sink module (131) comprise integrated heat pipe heat sinks disposed at the back of the first 450nm laser light source assembly (124), the fluorescent crystal assembly (122) and the second 450nm laser light source assembly (125), and one side of the integrated heat pipe heat sink is provided with a corresponding fan.
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| CN202010252789.5A CN111458931A (en) | 2020-04-02 | 2020-04-02 | High-brightness backlight source module based on L D pump fluorescent crystal |
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