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Laser light source device

A laser light source and laser source technology, applied in the field of laser lighting, can solve problems such as unfavorable heat dissipation, unfavorable overall heat dissipation, large light loss, etc., and achieve the effects of improving heat dissipation efficiency, reducing heat density, and prolonging service life

Pending Publication Date: 2020-12-22
青岛中科芯成照明技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this optical path has a large shielding of the fluorescence and a large light loss; the fluorescent material and the blue laser are on the same side, and the heat generation is relatively concentrated, which is not conducive to heat dissipation
At the same time, as a blue-ray laser with high heat generation, its heat-generating part is located on one side of the central axis of the optical path, which is not conducive to the design of the overall heat dissipation

Method used

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  • Laser light source device
  • Laser light source device
  • Laser light source device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 2 As shown, the laser light source device provided in Embodiment 1 includes a laser source 1, a collimating lens 2, a focusing lens 3, a scattering sheet 4, a diaphragm 5, a fluorescent device 7 and a transparent optical medium 8 arranged in sequence along the light propagation direction . The laser beam emitted by the laser source 1 is collimated by the collimating lens 2, focused by the focusing lens 3 and scattered by the scattering sheet 4, and then irradiates to the aperture 5, and then transmits through the aperture 5 to reach the fluorescent device 7, and is irradiated by the fluorescence of the fluorescent device 7 On the inner concave surface of the reflector 6, after being reflected and scattered by the inner concave surface, it is output through the transparent optical medium 8 to generate output light.

[0042] figure 1 The size range of each part in is:

[0043] D. 1 :Φ2-30mm; D 2 :Φ10-200mm; D 3 :Φ12-220mm; D 4 :Φ1-10mm;

[0044] d: Φ3...

example A

[0053] Example A: such as image 3 As shown, in this example A, the reflective layer 71 is a reflective film, the reflective film is plated on the surface of the transparent optical medium 8, and the reflective film is an aluminum film, a silver film or a dielectric layer;

[0054] The reflective layer 71 in this example A can also be a reflective metal layer, which is glued or welded on the surface of the transparent optical medium 8, and the reflective metal layer is metal aluminum with high reflectivity.

[0055] Both the reflective film and the reflective metal layer reflect the fluorescent light, so that the reflected light is irradiated to the inner concave surface of the reflector 6 .

[0056] Embodiment 1 of Example B: as Figure 4 As shown, the difference between Example B and Example A is that a metal copper layer 73 is also provided between the fluorescent device 7 and the transparent optical medium 8, and the shape and size of the metal copper layer 73 and the flu...

example C

[0058] Example C: such as Image 6 As shown, the difference between this example C and example B is that a copper wire or a heat pipe 74 is set between the fluorescent device 7 and the transparent optical medium 8; the metal copper layer is glued on the surface of the transparent optical medium or the metal copper layer; the copper wire or The heat pipe 74 is glued or welded on the surface of the transparent optical medium. When the heat generated by the fluorescent device 7 is large and cannot be dissipated through the transparent optical medium in time, it is necessary to conduct heat quickly from the center to the edge of the transparent medium through copper wires or heat pipes. like Figure 7 As shown, the shape of the copper wire or heat pipe 74 is from one edge of the transparent optical medium to the other edge, passing through the device 7 in the center. like Figure 8 As shown, the copper wire or heat pipe 74 may be shaped from the edge to the center of the transp...

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PUM

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Abstract

The invention discloses a laser light source device. The device comprises a laser source, a collimating lens, a focusing lens, a scattering sheet, a diaphragm, a fluorescent device and a transparent optical medium which are sequentially arranged in the light propagation direction, wherein the laser source comprises at least one laser diode used for emitting parallel laser beams; the diaphragm is arranged in the center of a reflector and used for allowing the laser beams to penetrate through and blocking fluorescent light and the reflected laser beams; and the laser beams emitted by the laser source are collimated by the collimating lens, focused by the focusing lens and scattered by the scattering sheet, then irradiate the diaphragm, then penetrate through the diaphragm to reach the fluorescent device, irradiate the inward-concave face of the reflector under the fluorescent action of the fluorescent device, are reflected by the inward-concave face and then are output by the transparentoptical medium, and output light is generated. According to the laser light source device, the light power density is increased, meanwhile, a light path can slightly block the fluorescent light, andthe overall efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of laser lighting, in particular to a laser light source device. Background technique [0002] At present, the use of blue laser to pump fluorescent materials to obtain white light, yellow light, green light and red light has become the mainstream technology of laser lighting because of its high cost performance and high reliability. [0003] Generally, the reflective pump light path can obtain higher optical power density than the transmissive pump light path. [0004] figure 1 It is an existing reflective pump light path. However, this optical path has a large shielding effect on the fluorescence and a large light loss; the fluorescent material and the blue laser are on the same side, and the heat generated is relatively concentrated, which is not conducive to heat dissipation. At the same time, as a blue-ray laser with high heat generation, its heat-generating part is located on one side of the central...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/27F21V11/08F21V7/04F21V7/22F21V5/04F21V29/51F21V29/89F21Y113/20
CPCF21V5/04F21V7/04F21V7/22F21V11/08F21V29/51F21V29/89F21K9/27F21Y2113/20
Inventor 成华陈延兵袁泉珂于军
Owner 青岛中科芯成照明技术有限公司