CN220891910U - Transmission type laser light source - Google Patents
Transmission type laser light source Download PDFInfo
- Publication number
- CN220891910U CN220891910U CN202322583349.XU CN202322583349U CN220891910U CN 220891910 U CN220891910 U CN 220891910U CN 202322583349 U CN202322583349 U CN 202322583349U CN 220891910 U CN220891910 U CN 220891910U
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- light
- wavelength conversion
- reflecting mirror
- blue
- cassegrain telescope
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000013021 overheating Methods 0.000 abstract description 3
- 238000010791 quenching Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a transmission type laser source, which comprises a blue laser diode structure, a Cassegrain telescope group, a wavelength conversion sheet and a collimation focusing element, wherein the blue laser diode structure is arranged on the front side of the Cassegrain telescope group; the blue light laser diode structure is formed by a plurality of blue light laser diodes in a surrounding array, and the light emitting ends of the plurality of blue light laser diodes correspond to the Cassegrain telescope set and are arranged at the front end of the Cassegrain telescope set at intervals; the wavelength conversion sheets are arranged at intervals at the light-emitting ends of the Cassegrain telescope groups, and the collimating focusing elements are arranged at intervals at the light-emitting ends of the wavelength conversion sheets. The transparent substrate with the dispersing capability is added in the wavelength conversion sheet, so that energy is uniformly emitted to the fluorescent powder layer, the utilization efficiency of the fluorescent powder is higher, and the local fluorescent powder is not easy to quench due to overheating.
Description
Technical Field
The utility model relates to a laser source, in particular to a transmission type laser source.
Background
The laser light sources may be classified into transmission type laser light sources and reflection type laser light sources. The transmission type laser light source has a simple structure, the overall size of the whole structure is small, but the heat dissipation area is small due to small arrangement interval of laser chips and fixation of fluorescent materials, and the high heat dissipation level is difficult to achieve, so that the transmission type laser light source is used for a low-power laser and a single laser;
The reflective laser light source structure can improve the heat dissipation performance of the fluorescent material by increasing the heat dissipation area of the fluorescent material so as to achieve the purpose of bearing the high-power laser, but has large structural external dimension, high cost and limited use environment.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a transmission type laser light source, which solves the problems in the background technology through the arrangement of a Cassegrain telescope group and a wavelength conversion sheet.
The transmission type laser light source is realized by the following technical scheme: the device comprises a blue light laser diode structure, a Cassegrain telescope group, a wavelength conversion sheet and a collimation focusing element;
The blue light laser diode structure is formed by a plurality of blue light laser diodes in a surrounding array, and the light emitting ends of the plurality of blue light laser diodes correspond to the Cassegrain telescope set and are arranged at the front end of the Cassegrain telescope set at intervals; the wavelength conversion sheets are arranged at intervals at the light-emitting ends of the Cassegrain telescope groups, and the collimating focusing elements are arranged at intervals at the light-emitting ends of the wavelength conversion sheets.
As a preferred technical solution, the cassegrain telescope set includes a first mirror and a second mirror, the second mirror is located in front of the first mirror, and the first mirror has an opening in the middle, and the opening is related to the second mirror and the wavelength conversion plate.
As the preferable technical scheme, the wavelength conversion sheet consists of a fluorescent powder layer and a transparent substrate, wherein the front end of the fluorescent powder layer is provided with a fluorescent powder protection film, and both ends of the transparent substrate are provided with antireflection films.
As a preferable technical scheme, the plurality of blue light laser diodes are arranged avoiding the second reflector array, and the blue light laser diodes emit laser to irradiate on the first reflector and reflect through the first reflector to irradiate on the second reflector, and reflect light through the second reflector to enable the light to pass through an opening in the middle of the first reflector to be arranged on the wavelength conversion sheet.
The beneficial effects of the utility model are as follows: according to the utility model, the Cassegrain telescope lens group is added, so that a plurality of blue laser diodes concentrate energy; the transparent substrate with the dispersing capability is added in the wavelength conversion sheet, so that energy is uniformly emitted to the fluorescent powder layer, the utilization efficiency of the fluorescent powder is higher, and the local fluorescent powder is not easy to quench due to overheating.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a light path diagram of the present utility model;
FIG. 2 is a schematic diagram of a blue LED arrangement according to the present utility model;
FIG. 3 is a schematic view of a Cassegrain telescope set of the present utility model;
fig. 4 is a schematic view of a wavelength conversion sheet according to the present utility model.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
As shown in fig. 1 and 2, a transmission type laser light source of the present utility model includes a blue laser diode structure 1, a cassegrain telescope group 2, a wavelength conversion plate 3, and a collimating focusing element 4;
The blue laser diode structure 1 is formed by encircling and arraying a plurality of blue laser diodes 5, and meanwhile, other blue laser diodes can be orderly arranged according to the caliber of a subsequent lens group and market requirements, and in the embodiment, as shown in fig. 2, by centralizing the plurality of blue laser diodes 5, more intervals can be reserved for heat dissipation during arrangement; the light emitting ends of the blue light laser diodes 5 correspond to the Cassegrain telescope group 2 and are arranged at intervals at the front end of the Cassegrain telescope group 2; the wavelength conversion sheets 3 are arranged at intervals at the light emitting ends of the Cassegrain telescope group 2, and the collimating focusing elements 4 are arranged at intervals at the light emitting ends of the wavelength conversion sheets 3.
As shown in fig. 3, the cassegrain telescope set 2 includes a first reflector 6 and a second reflector 7, the second reflector 7 is located in front of the first reflector 6, and the middle of the first reflector 6 is provided with an opening, and the opening size is related to the second reflector 7 and the wavelength conversion sheet 3, and the second reflector 7 is larger than the first reflector 6; because the light receiving capability of the Cassegrain telescope set is superior, more blue light laser diodes can be matched on the premise of ensuring heat dissipation.
As shown in fig. 4, the wavelength conversion sheet 3 is composed of a fluorescent powder layer 8 and a transparent substrate 9, wherein a fluorescent powder protection film 10 is arranged at the front end of the fluorescent powder layer 8, and an antireflection film 11 is arranged at both ends of the transparent substrate 9; the transparent substrate with the dispersing capability is added into the wavelength conversion sheet, so that energy is uniformly emitted to the fluorescent powder layer, the utilization efficiency of the fluorescent powder is higher, and the local fluorescent powder is not easy to quench due to overheating.
In this embodiment, the plurality of blue laser diodes 5 are arranged in an array avoiding the second reflector 7, and the blue laser diodes 5 emit laser to irradiate on the first reflector 6, and reflect through the first reflector 6 to irradiate on the second reflector 7, and reflect light through the second reflector 7, so that the light passes through the opening in the middle of the first reflector 6 and is placed on the wavelength conversion sheet 3; the light receiving effect by the reflector group is good, and the cost is low.
Wherein the transparent substrate is generally composed of a transparent lens with a diverging capability (such as an atomizing sheet for laser, etc.); the fluorescent powder protective film is used for preventing the influence of degradation factors in the atmosphere such as moisture, gas and the like on the fluorescent powder; the fluorescent powder material in the wavelength conversion sheet is generally LuAG-Ce, and is fluorescent yellow powder.
In addition, the collimating and focusing element 4 is a condensing lens or a cylindrical mirror, the divergence angle of the laser is adjusted through the collimating and focusing element, the emergent light spots with the target shape and size can be obtained, and the specific selection of the collimating and focusing element can be flexibly set according to the requirement of the emergent light spots.
The plurality of blue laser diodes emit blue laser, and the blue laser beam is converged into a smaller light spot through twice reflection by the Cassegrain telescope lens group; the light spots are beaten on the wavelength conversion sheet, the light spots are firstly led to be scattered through the transparent substrate, the fluorescent powder is evenly irradiated, yellow light is excited, and blue laser which does not participate in excitation is mixed with the excited yellow light to form white light; the mixed white light passes through the focusing and collimating assembly to form a light beam with smaller angle and more concentrated light beam, thereby meeting the market demand.
The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the utility model is not limited thereto, but any changes or substitutions that do not undergo the inventive effort should be construed as falling within the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.
Claims (4)
1. A transmission laser light source, characterized by: the device comprises a blue light laser diode structure (1), a Cassegrain telescope group (2), a wavelength conversion sheet (3) and a collimation focusing element (4);
The blue laser diode structure (1) is formed by a plurality of blue laser diodes (5) in a surrounding array, and the light-emitting ends of the plurality of blue laser diodes (5) correspond to the Cassegrain telescope group (2) and are arranged at the front end of the Cassegrain telescope group (2) at intervals; the wavelength conversion sheets (3) are arranged at intervals at the light-emitting ends of the Cassegrain telescope group (2), and the collimating focusing elements (4) are arranged at intervals at the light-emitting ends of the wavelength conversion sheets (3).
2. The transmissive laser light source of claim 1, wherein: the Cassegrain telescope group (2) comprises a first reflecting mirror (6) and a second reflecting mirror (7), the second reflecting mirror (7) is positioned in front of the first reflecting mirror (6), an opening is formed in the middle of the first reflecting mirror (6), and the opening size is related to the second reflecting mirror (7) and the wavelength conversion sheet (3).
3. The transmissive laser light source of claim 1, wherein: the wavelength conversion sheet (3) is composed of a fluorescent powder layer (8) and a transparent substrate (9), wherein a fluorescent powder protection film (10) is arranged at the front end of the fluorescent powder layer (8), and antireflection films (11) are arranged at the two ends of the transparent substrate (9).
4. The transmissive laser light source of claim 1, wherein: the plurality of blue light laser diodes (5) are arranged in an array mode avoiding the second reflecting mirror (7), and the blue light laser diodes (5) emit laser to irradiate on the first reflecting mirror (6) and reflect through the first reflecting mirror (6) to irradiate on the second reflecting mirror (7), and reflect light through the second reflecting mirror (7) to enable the light to pass through an opening in the middle of the first reflecting mirror (6) to be arranged on the wavelength conversion sheet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322583349.XU CN220891910U (en) | 2023-09-21 | 2023-09-21 | Transmission type laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322583349.XU CN220891910U (en) | 2023-09-21 | 2023-09-21 | Transmission type laser light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891910U true CN220891910U (en) | 2024-05-03 |
Family
ID=90871867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322583349.XU Active CN220891910U (en) | 2023-09-21 | 2023-09-21 | Transmission type laser light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891910U (en) |
-
2023
- 2023-09-21 CN CN202322583349.XU patent/CN220891910U/en active Active
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| GR01 | Patent grant |