CN214840181U - White light source module - Google Patents
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- CN214840181U CN214840181U CN202121003180.0U CN202121003180U CN214840181U CN 214840181 U CN214840181 U CN 214840181U CN 202121003180 U CN202121003180 U CN 202121003180U CN 214840181 U CN214840181 U CN 214840181U
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Abstract
The utility model discloses a white light source module, this white light source module include LD module, first focusing mirror, scattering piece, anti-light cup, second focusing mirror, fluorescence device, transparent heat conduction seat, first focusing mirror sets up in LD module top, the scattering piece sets up in first focusing mirror top, anti-light cup sets up in the scattering piece top, second focusing mirror sets up inside anti-light cup, second focusing mirror top is provided with fluorescence device, transparent heat conduction seat sets up the top at anti-light cup. The utility model provides a light source with a reflection structure, which is characterized in that a second focusing mirror is added between a fluorescent device and a reflection cup, so that the light beam emitted by the light source through the reflection cup has small divergence angle and more concentrated energy, thereby being further transmitted; meanwhile, the second focusing mirror is arranged between the fluorescent device and the reflecting cup, so that no additional position is needed, and the length of the light source is reduced.
Description
Technical Field
The utility model relates to a laser field, in particular to white light source module.
Background
At present, there are four main methods for generating white light by the existing laser module in the market: (1) exciting a yellow fluorescent powder coating by a blue light chip; (2) the red light, green light and blue light chips are directly mixed; (3) the blue light chip excites the red and green fluorescent powder coatings; (4) the UV chip excites the red, green and yellow fluorescent powder coatings. At present, a more common mode is that blue laser excites a yellow fluorescent powder coating, and a light source prepared by the coating has high reliability and good efficiency. At present, the methods for generating white light by exciting a fluorescent material with blue light LD are mainly divided into two types, one is reflective type, and the other is transmissive type. The reflective structure is mainly realized by a reflective cup, and because the light beam from the reflective cup is basically divergent, the use of people is inconvenient, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the background art, the utility model provides a white light source module.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a white light source module, includes LD module, first focusing mirror, diffuser, reflection of light cup, second focusing mirror, fluorescence device, transparent heat conduction seat, first focusing mirror sets up in LD module top, the diffuser sets up in first focusing mirror top, reflection of light cup sets up in the diffuser top, second focusing mirror sets up inside reflection of light cup, second focusing mirror top is provided with fluorescence device, transparent heat conduction seat sets up the top at reflection of light cup.
The central part of the reflecting cup is provided with a light through hole, so that the blue light beam can pass through and then can strike on the fluorescent device. The second focusing mirror is arranged in the through opening in the reflecting cup. The reflecting surface of the reflecting cup is a surface needing special optical design and is determined according to the size of the light emitting surface of the fluorescent powder coating, the light emitting position of the fluorescent powder coating, the surface type and the focal length of the first focusing mirror. The main function of the reflecting cup is to reflect the light emitted by the fluorescent powder coating, and the first focusing mirror has a focusing function on the light emitted by the fluorescent powder coating, so that the reflecting cup further converges and reflects the light beams, and the light beams can be emitted in an approximately parallel manner.
The LD module is provided with a collimating lens, and is a laser diode element for providing blue laser. The LD module is a general element in the market, and mainly functions to provide a blue laser light source. The first focusing lens and the second focusing lens are optical lens elements, and the materials of the optical lens elements are mainly glass or other transparent materials such as plastics. The first focusing mirror is used for focusing the blue light emitted by the LD module and focusing the blue light to a proper position, namely the position of the fluorescent device. The second focusing lens is used for further converging the light beams emitted by the LD module on the fluorescent device and converging the light emitted by the fluorescent device, so that the converged light is incident on the reflecting cup and can be transmitted at a smaller angle or nearly parallel light after being reflected by the reflecting cup.
The scattering sheet is an optical element, and the material of the scattering sheet is mainly glass or other transparent materials such as plastics. The main function is to make the LD light beam after being focused by the focusing lens uniform. The LD blue laser beam after being focused by the focusing lens has small area and Gaussian energy distribution, which is not beneficial to the energy conversion of the fluorescent powder coating. For example, the diameter of the center of the focused blue laser beam is 0.5mm, while the diameter of the fluorescent material is 3mm, and the conversion area is small; when the blue laser with Gaussian distributed energy is applied to the fluorescent material, the center efficiency is high, the edge efficiency is low, and the energy difference between the center and the two sides of the emitted yellow light is large, so that the effect of the generated mixed white light is not good, and the fluorescent material can be burnt due to the fact that the central energy is too high. The scattering sheet can homogenize the focused blue laser, uniformly distribute energy and increase the area, thereby improving the conversion effect of the fluorescent powder coating and improving the effect of mixing white light.
The fluorescent device comprises a metal heat dissipation seat and a fluorescent powder coating, wherein the fluorescent powder coating is coated on the metal heat dissipation seat, and the surface of the metal heat dissipation seat, which is in contact with the fluorescent powder coating, is polished into a mirror surface so as to reflect light rays emitted by the fluorescent powder coating. The transparent heat conducting seat is an optical flat sheet and mainly has the function of providing a certain heat conducting effect while enabling light rays to penetrate through. The surface of the transparent heat conducting seat is coated with a film so as to improve the light transmittance.
The utility model has the advantages that: the utility model provides a light source with a reflection structure, which is basically parallel light, and the light rays come out from a reflection cup. The utility model adds the second focusing mirror between the fluorescent device and the reflecting cup, so that the light beam emitted by the light source through the reflecting cup has small divergence angle, more concentrated energy and longer propagation; meanwhile, the second focusing mirror is arranged between the fluorescent device and the reflecting cup, so that no additional position is needed, and the length of the light source is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the optical path of the present invention.
Fig. 3 is a schematic view of the working principle and structure of the fluorescent device of the present invention.
In the figure, 1, an LD module, 2, a first focusing mirror, 3, a scattering sheet, 4, a reflecting cup, 5, a second focusing mirror, 6, a fluorescent device, 7, a transparent heat conducting seat, 61, a metal heat dissipation seat and 62, a fluorescent powder coating.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings and examples, and the parts of the present invention not described in the present invention can be realized by using or using the existing technologies.
It should be noted that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy that the present invention can produce and the purpose that the present invention can achieve.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1-3, a white light source module, including LD module 1, first focusing mirror 2, diffuser 3, reflection of light cup 4, second focusing mirror 5, fluorescent device 6, transparent heat conduction seat 7, first focusing mirror 2 sets up in LD module 1 top, diffuser 3 sets up in first focusing mirror 2 top, reflection of light cup 4 sets up in diffuser 3 top, second focusing mirror 5 sets up inside reflection of light cup 4, second focusing mirror 5 top is provided with fluorescent device 6, transparent heat conduction seat 7 sets up the top at reflection of light cup 4. The LD module 1, the first focusing mirror 2, the scattering sheet 3, the reflecting cup 4, the second focusing mirror 5, the fluorescent device 6 and the transparent heat conducting base 7 are detachably arranged in the lamp bracket through the prior art.
The central portion of the reflector cup 4 is provided with a light-passing hole to allow the blue light beam to pass through and then impinge on the fluorescent device 6. The second focusing mirror 5 is arranged in a passage inside the reflector cup 4. The reflecting surface of the reflecting cup 4 is a surface which needs special optical design and is determined according to the size of the light emitting surface of the fluorescent powder coating 62, the light emitting position of the fluorescent powder coating 62, the surface type and the focal length of the first focusing mirror 2. The main function of the reflective cup 4 is to reflect the light emitted from the phosphor coating 62, and since the first focusing lens 2 focuses the light emitted from the phosphor coating 62, the reflective cup 4 further focuses and reflects the light beam, so that the light beam can be emitted nearly in parallel.
The LD module 1 is provided with a collimating lens, and the LD module 1 is a laser diode element that provides blue laser light. The LD module 1 is a commercially available component, and mainly functions to provide a blue laser light source. The first focusing lens 2 and the second focusing lens 5 are optical lens elements, and the material of the optical lens elements is mainly glass or other transparent materials such as plastics. The first focusing mirror 2 is used for focusing the blue light emitted by the LD module 1 to a proper position, i.e., the position of the fluorescent device 6. The second focusing lens 5 is used for further converging the light beam emitted by the LD module 1 onto the fluorescent device 6 and converging the light emitted by the fluorescent device 6, so that the converged light impinges on the reflective cup 4 and can be transmitted at a smaller angle or nearly parallel light after being reflected by the reflective cup 4.
The diffusion sheet 3 is an optical element, and is mainly made of glass, plastic or other transparent materials. The main function is to make the LD light beam after being focused by the focusing lens uniform. The LD blue laser beam after being focused by the focusing lens has small area and Gaussian energy distribution, which is not beneficial to the energy conversion of the fluorescent powder coating. For example, the diameter of the center of the focused blue laser beam is 0.5mm, while the diameter of the fluorescent material is 3mm, and the conversion area is small; when the blue laser with Gaussian energy distribution is applied to the fluorescent material, the center efficiency is high, the edge efficiency is low, and the energy difference between the center and the two sides of the emitted yellow light is large, so that the effect of the generated mixed white light is not good, and the fluorescent material can be burnt due to the overhigh center energy. The scattering sheet can homogenize the focused blue laser, uniformly distribute energy and increase the distribution area, thereby improving the conversion effect of the fluorescent powder coating and improving the effect of mixing white light.
The fluorescent device 6 includes a metal heat sink 61 and a phosphor coating 62, the phosphor coating 62 is coated on the metal heat sink 61, and the surface of the metal heat sink 61 contacting the phosphor coating 62 is polished to a mirror surface to reflect light emitted from the phosphor coating 62. The phosphor coating 62 is capable of producing yellow light when excited by a blue laser. The transparent heat conducting base 7 is an optical flat sheet, and has a main function of providing a certain heat conducting effect while allowing light to pass through. The surface of the transparent heat conducting seat 7 is coated to improve the light transmittance.
The utility model discloses when using, LD module 1 sends blue light laser, and first focusing mirror 2 focuses on the position at 6 places of fluorescence device with the blue light that LD module 1 sent, and second focusing mirror 5 carries out the secondary to the blue light laser that LD module 1 sent and assembles. The fluorescent powder coating 62 in the fluorescent device 6 generates yellow light after being excited by the blue laser, the yellow light generated by the fluorescent powder coating 62 is converged by the second focusing lens 5, the yellow light is converged and then irradiates on the reflecting cup 4, the yellow light and the blue light interact on the reflecting cup 4 to emit white light, the white light is converged and reflected by the reflecting cup 4, and finally the white light is emitted in an approximately parallel manner.
The utility model provides a light source of reflective structure, the light that comes out by reflection of light cup 4 is the parallel light basically. The utility model adds the second focusing lens 5 between the fluorescent device 6 and the reflecting cup 4, so that the light beam emitted by the light source through the reflecting cup 4 has small divergence angle and more concentrated energy, thereby being transmitted farther; meanwhile, since the second focusing mirror 5 is added between the fluorescent device 6 and the reflecting cup 4, no additional position is needed, thereby reducing the length of the light source. The utility model discloses the white light that sends divergence angle is little, the energy is concentrated, propagation distance is far away.
Claims (3)
1. A white light source module is characterized in that: including LD module (1), first focusing mirror (2), diffuser (3), reflection of light cup (4), second focusing mirror (5), fluorescence device (6), transparent heat conduction seat (7), first focusing mirror (2) set up in LD module (1) top, diffuser (3) set up in first focusing mirror (2) top, reflection of light cup (4) set up in diffuser (3) top, second focusing mirror (5) set up inside reflection of light cup (4), second focusing mirror (5) top is provided with fluorescence device (6), transparent heat conduction seat (7) set up on the top of reflection of light cup (4).
2. The white light source module as claimed in claim 1, wherein: the central part of the reflection cup (4) is provided with a light through hole, and the second focusing mirror (5) is arranged in a through hole in the reflection cup (4).
3. The white light source module as claimed in claim 1, wherein: the fluorescent device (6) comprises a metal heat dissipation seat (61) and a fluorescent powder coating (62), wherein the fluorescent powder coating (62) is coated on the metal heat dissipation seat (61), and the surface of the metal heat dissipation seat (61) in contact with the fluorescent powder coating (62) is polished into a mirror surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121003180.0U CN214840181U (en) | 2021-05-11 | 2021-05-11 | White light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121003180.0U CN214840181U (en) | 2021-05-11 | 2021-05-11 | White light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214840181U true CN214840181U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121003180.0U Active CN214840181U (en) | 2021-05-11 | 2021-05-11 | White light source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214840181U (en) |
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2021
- 2021-05-11 CN CN202121003180.0U patent/CN214840181U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20221103 Address after: 266000 Room 305, building 1, No. 61, Guangsheng Road, high tech Zone, Qingdao, Shandong Patentee after: Qingdao Zhongke Core Optical Integrated Circuit Co.,Ltd. Address before: 266000 No. 61, Guangsheng Road, high tech Industrial Development Zone, Qingdao, Shandong Patentee before: QINGDAO ACADEMY FOR OPTO-ELECTRONICS ENGINEERING |