CN115183202A - Diffuse reflection type laser lighting device - Google Patents
Diffuse reflection type laser lighting device Download PDFInfo
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- CN115183202A CN115183202A CN202210851963.7A CN202210851963A CN115183202A CN 115183202 A CN115183202 A CN 115183202A CN 202210851963 A CN202210851963 A CN 202210851963A CN 115183202 A CN115183202 A CN 115183202A
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- laser
- lighting module
- diffuse reflection
- particles
- laser lighting
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- 239000002245 particle Substances 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000005286 illumination Methods 0.000 claims description 33
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Semiconductor Lasers (AREA)
Abstract
A diffuse reflection type laser lighting device comprises a laser lighting module, an incident laser light source and a reflecting layer; the laser lighting module is provided with a laser lighting module inner ring and a laser lighting module outer ring, the laser lighting module inner ring is a diffuse reflection layer mixed with diffuse reflection particles, and the laser lighting module outer ring is a fluorescent powder layer mixed with the diffuse reflection particles and fluorescent powder particles; the incident laser light source is arranged at the bottom of the inner ring of the laser lighting module, and the reflecting layer is arranged at the top of the laser lighting module; part of laser beams enter the inner ring of the laser lighting module, are subjected to diffuse reflection to change the beam direction and then enter the outer ring of the laser lighting module; part of laser is reflected to the reflecting layer and then enters the outer ring of the laser lighting module through diffuse reflection; laser enters the outer ring of the laser lighting module, part of the laser irradiates to the fluorescent powder particles to complete conversion, part of the laser cannot be fully absorbed and converted, the laser irradiates to the diffuse reflection particles to randomly change the direction of light beams again, all the light rays are emitted from the side wall of the outer ring of the laser lighting module, and finally uniform lighting is achieved.
Description
Technical Field
The invention relates to the field of lighting devices, in particular to a diffuse reflection type laser lighting device.
Background
Since 1999 blue semiconductor lasers became available, laser illumination has received much attention. The laser illumination has the advantages of high brightness, good monochromaticity, good directivity, environmental protection and the like. Laser illumination technology is still currently in the frontier. The high-power laser irradiates the surface of the light conversion material to generate a large amount of heat. Light transfer material heat losses place limits on the illumination design. It is also common in high lumen density laser systems to have a large difference between the central color temperature and the edge color temperature. Mainly, the high-power blue laser cannot be fully absorbed and converted, and directly penetrates through the fluorescent powder, so that the white light uniformity is greatly influenced. At present, all countries in the world carry out comprehensive and extensive research on light conversion materials with high efficiency and stable thermal performance and optical structures of remote excitation fluorescent powder, and new materials are continuously emerged.
The primary methods for white light illumination with laser light sources include the trichromatic method and the fluorescence conversion method. The three primary colors method is to synthesize white light from red, green, and blue laser diodes according to the RGB laser power ratio, and obtain uniform white light by using a microlens. But currently the scheme is in a stalled state. The fluorescence conversion method is a method of obtaining yellow light by irradiating yellow fluorescent powder with blue laser, mixing the blue light and the yellow light to obtain white light, and finely regulating and controlling the white light by using optical structures such as an optical lens, a reflecting cover and the like.
The light emitting diode is used as a solid light source, has great influence on the illumination industry by virtue of the advantages of small volume, high light efficiency, long service life and the like, and is widely applied to daily life. However, the light emitting diode has a phenomenon of 'efficiency drop', and when the power is increased to a certain range, the light emitting efficiency is reduced. The light emitting diode chip can maintain higher conversion efficiency under lower driving power.
Disclosure of Invention
The present invention is directed to solve the above problems in the prior art, and provides a diffuse reflection type laser lighting device, which has a wide application range, and can improve the lighting performance and the light color quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
a diffuse reflection type laser lighting device comprises a laser lighting module, an incident laser light source and a reflecting layer; the laser lighting module is provided with a laser lighting module inner ring and a laser lighting module outer ring, the laser lighting module inner ring is a diffuse reflection layer mixed with diffuse reflection particles, and the laser lighting module outer ring is a fluorescent powder layer mixed with the diffuse reflection particles and fluorescent powder particles; the incident laser light source is arranged at the bottom of the inner ring of the laser lighting module, and the reflecting layer is arranged at the top of the laser lighting module;
the laser illumination device comprises a laser illumination module, an incident laser light source, a laser illumination module inner ring, a laser illumination module outer ring, a laser illumination module inner ring and a laser illumination module outer ring, wherein the incident laser light source is started, an incident laser beam enters the laser illumination module inner ring for diffuse reflection, the laser is irradiated to diffuse reflection particles to change the direction of the beam, and a part of laser enters the laser illumination module outer ring from the side wall of the laser illumination module inner ring after the direction of the laser is changed; part of laser enters the inner ring of the laser lighting module again after being reflected from the top of the inner ring of the laser lighting module to the reflecting layer, and enters the outer ring of the laser lighting module from the side wall of the inner ring of the laser lighting module after being subjected to diffuse reflection; the laser enters the outer ring of the laser lighting module, part of the laser irradiates to the fluorescent powder particles to complete conversion, part of the laser cannot be fully absorbed and converted, the light beam direction is randomly changed again when the laser irradiates to the diffuse reflection particles, all light rays are emitted from the side wall of the outer ring of the laser lighting module, and uniform lighting is finally achieved.
The laser lighting module is made of epoxy resin, silicon resin or organic silicon gel, so that fluorescent powder particles and diffuse reflection particles are attached and transmit light.
The incident laser light source adopts a solid laser, a gas laser, a liquid laser or a semiconductor laser.
The incident light direction of the incident laser light source is parallel to the central axis of the laser lighting module.
The diffuse reflection particles are irregular fine alumina particles.
One side of the laser lighting module, which is close to the incident laser light source, is concave.
The laser lighting module is close to one side of the incident laser light source, and the concentration of diffuse reflection particles and fluorescent powder particles is low; the laser lighting module is far away from one side of the incident laser light source, and the concentration of the diffuse reflection particles and the fluorescent powder particles is high.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the diffuse reflection type laser lighting device can avoid the phenomenon of blue light spots which often appear in laser lighting. Finally, all light rays are emitted from the side wall through the direction change caused by the diffuse reflection particles, and the spot chromaticity difference is small. The color distribution is more uniform than that of the traditional transmission type and reflection type lighting devices. The whole scheme of the invention is simple to implement, and different color illumination light sources can be generated according to the laser light source and the fluorescent powder.
Drawings
FIG. 1 is a schematic structural view of example 1;
fig. 2 is a schematic structural view of embodiment 2.
Reference numerals: 1-an incident laser light source; 2-incident laser beam; 3-laser light after diffuse reflection; 4-reflected light; 5-emitting light; (1) the inner ring of the layer-laser lighting module is made of epoxy resin mixed with diffuse reflection particles; (2) the outer ring of the layer-laser lighting module is made of epoxy resin mixed with diffuse reflection particles and fluorescent powder particles; (3) layer-reflective layer.
Detailed Description
In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the diffuse reflection type laser lighting device of the present embodiment includes a laser lighting module, an incident laser light source 1, and a reflective layer (3) layer;
the laser lighting module is provided with an inner ring of the laser lighting module, namely an epoxy resin (1) layer mixed with diffuse reflection particles, and an outer ring of the laser lighting module, namely an epoxy resin (2) layer mixed with the diffuse reflection particles and fluorescent powder particles; the incident laser light source 1 is arranged at the bottom of the inner ring of the laser lighting module, and the reflecting layer (3) is arranged at the top of the laser lighting module.
In this embodiment, the laser illumination module is cylindrical; the incident laser light source 1 includes a red laser, a green laser, a blue laser, or any combination thereof, and is selected according to actual needs. The incident laser light source 1 may be a solid laser or a gas laser or a liquid laser or a semiconductor laser. The incident light direction of the incident laser light source 1 is parallel to the central axis of the laser lighting module.
The diffuse reflection particles are irregular fine alumina particles, and scatter incident fine laser beams so as to change the direction of the laser beams. On one hand, the aluminum oxide has high reflectivity, and on the other hand, the aluminum oxide has high thermal conductivity, so that the thermal stability of the lighting module can be enhanced.
The invention adopts laser illumination, has no problem of efficiency dip, and can not influence the light-emitting efficiency due to the working time and the working temperature. The conversion principle of the fluorescent powder is photoluminescence, electrons in a ground state absorb blue light and jump to an excited state, and when the electrons are radiated back to the ground state, photons are emitted. The fluorescent powder has fixed manufacturing process and low price, and can be well matched with a high-power blue laser diode.
The illumination light source may be set to white light or other colored light as desired, depending on the choice of the incident laser light source and the material of the phosphor layer. If the white light is required to be displayed, blue laser can be selected as an incident laser light source, a Ce3+: YAG material is selected as a material of the fluorescent powder layer, and the blue laser and the excited yellow light are mixed to obtain the white light. If the light is displayed as other light with any color, different light sources and fluorescent substances can be selected according to the color matching principle.
As shown in fig. 1, the working principle of the present invention is as follows:
starting an incident laser light source 1, enabling an incident laser beam 2 to enter the inner ring of the laser lighting module for diffuse reflection, enabling laser to irradiate the diffuse reflection particles to change the direction of the beam to form laser 3 subjected to diffuse reflection, and enabling a part of laser to enter the outer ring of the laser lighting module from the side wall of the inner ring of the laser lighting module after the direction of the part of laser is changed; part of laser goes from the top of the inner ring of the laser lighting module to the reflecting layer, the laser is reflected to form reflected light 4, enters the inner ring of the laser lighting module again, and enters the outer ring of the laser lighting module from the side wall of the inner ring of the laser lighting module after being subjected to diffuse reflection; the laser enters the outer ring of the laser lighting module, part of the laser irradiates to the fluorescent powder particles to complete conversion, part of the laser cannot be fully absorbed and converted, the light beam direction is randomly changed again when the laser irradiates to the diffuse reflection particles, all light rays are emitted from the side wall of the outer ring of the laser lighting module to form light emitting 5, and finally uniform lighting is achieved.
Example 2
As shown in fig. 2, in this embodiment, based on embodiment 1, a beam expanding manner is added, so as to try to improve the situation that laser is not uniform due to the laser directivity when the lamp is used as a lamp, and in consideration of the fact that laser is concentrated in the center of the incident laser light source 1, one side of the laser lighting module close to the incident laser light source 1 is set to be concave, and finally, blue laser is diffused to the periphery.
And adjusting the concentrations of the aluminum oxide particles and the fluorescent powder particles. The laser lighting module is arranged at one side close to the incident laser light source 1, and the concentration of aluminum oxide and fluorescent powder particles of the laser lighting module is low; and the aluminum oxide and fluorescent powder particles of the laser lighting module are high in concentration at the side far away from the incident laser light source 1. In the embodiment with uniform concentration, the laser beam parallel to the central axis of the laser lighting module is reduced continuously because of the change of the laser beam direction and the conversion of the fluorescent powder to form a new light source due to the diffuse reflection. The intensity of the blue laser light of the laser lighting module on the side far from the incident laser light source 1 is lower than that of the blue laser light reaching the laser lighting module on the side near to the incident laser light source 1. Through adjusting the concentration ratio, although the intensity of blue laser reaching the laser lighting module on the side far away from the incident laser light source 1 is lower than that of blue laser reaching the laser lighting module on the side near the incident laser light source 1, along with the improvement of the concentrations of aluminum oxide and phosphor particles, the overall conversion and diffuse reflection efficiency of the position are improved, and the light distribution of the lighting module is more uniform.
Claims (7)
1. A diffuse reflection laser illumination device, characterized by: the laser illumination device comprises a laser illumination module, an incident laser light source and a reflecting layer; the laser lighting module is provided with a laser lighting module inner ring and a laser lighting module outer ring, the laser lighting module inner ring is a diffuse reflection layer mixed with diffuse reflection particles, and the laser lighting module outer ring is a fluorescent powder layer mixed with the diffuse reflection particles and fluorescent powder particles; the incident laser light source is arranged at the bottom of the inner ring of the laser lighting module, and the reflecting layer is arranged at the top of the laser lighting module;
the laser illumination device comprises a laser illumination module, an incident laser source, a laser illumination module inner ring, a laser illumination module outer ring, a laser illumination module and a laser illumination module, wherein the incident laser source is started, an incident laser beam enters the laser illumination module inner ring for diffuse reflection, laser irradiates diffuse reflection particles to change the direction of the beam, and a part of laser enters the laser illumination module outer ring from the side wall of the laser illumination module inner ring after changing the direction; part of laser enters the inner ring of the laser lighting module again after being reflected from the top of the inner ring of the laser lighting module to the reflecting layer, and enters the outer ring of the laser lighting module from the side wall of the inner ring of the laser lighting module after being diffused and reflected; the laser enters the outer ring of the laser lighting module, part of the laser irradiates to the fluorescent powder particles to complete conversion, part of the laser cannot be fully absorbed and converted, the light beam direction is randomly changed again when the laser irradiates to the diffuse reflection particles, all light rays are emitted from the side wall of the outer ring of the laser lighting module, and uniform lighting is finally achieved.
2. A diffuse reflection laser illumination device according to claim 1, wherein: the laser lighting module is made of epoxy resin, silicon resin or organic silicon gel, so that fluorescent powder particles and diffuse reflection particles are attached and transmit light.
3. A diffusely reflective laser illuminator according to claim 1, wherein: the incident laser light source adopts a solid laser, a gas laser, a liquid laser or a semiconductor laser.
4. A diffusely reflective laser illuminator according to claim 1, wherein: the incident light direction of the incident laser light source is parallel to the central axis of the laser lighting module.
5. A diffuse reflection laser illumination device according to claim 1, wherein: the diffuse reflection particles are irregular fine alumina particles.
6. A diffusely reflective laser illuminator according to claim 1, wherein: one side of the laser lighting module, which is close to the incident laser light source, is concave.
7. A diffusely reflective laser illuminator according to claim 1, wherein: the laser lighting module is close to one side of the incident laser light source, and the concentration of diffuse reflection particles and fluorescent powder particles is low; the laser lighting module is far away from one side of the incident laser light source, and the concentration of the diffuse reflection particles and the fluorescent powder particles is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851963.7A CN115183202A (en) | 2022-07-20 | 2022-07-20 | Diffuse reflection type laser lighting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851963.7A CN115183202A (en) | 2022-07-20 | 2022-07-20 | Diffuse reflection type laser lighting device |
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| Publication Number | Publication Date |
|---|---|
| CN115183202A true CN115183202A (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210851963.7A Pending CN115183202A (en) | 2022-07-20 | 2022-07-20 | Diffuse reflection type laser lighting device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214669A (en) * | 2013-05-30 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | LED flood lamp and light distribution lens thereof |
| CN106322268A (en) * | 2015-06-25 | 2017-01-11 | 英属开曼群岛商睿能创意公司 | Vehicle, lamp system and lamp device of lamp system |
| CN109882751A (en) * | 2019-03-19 | 2019-06-14 | 天津市斯奥格汽车光电有限公司 | White light light mixing device, fluorescence colour wheel and lighting apparatus |
| CN111285675A (en) * | 2018-12-07 | 2020-06-16 | 上海航空电器有限公司 | Concentration gradient fluorescent ceramic for laser illumination and preparation method thereof |
-
2022
- 2022-07-20 CN CN202210851963.7A patent/CN115183202A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214669A (en) * | 2013-05-30 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | LED flood lamp and light distribution lens thereof |
| CN106322268A (en) * | 2015-06-25 | 2017-01-11 | 英属开曼群岛商睿能创意公司 | Vehicle, lamp system and lamp device of lamp system |
| CN111285675A (en) * | 2018-12-07 | 2020-06-16 | 上海航空电器有限公司 | Concentration gradient fluorescent ceramic for laser illumination and preparation method thereof |
| CN109882751A (en) * | 2019-03-19 | 2019-06-14 | 天津市斯奥格汽车光电有限公司 | White light light mixing device, fluorescence colour wheel and lighting apparatus |
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