Fluorescent module and laser lighting system

A fluorescent and modular technology, applied in the field of laser lighting, can solve the problems of difficult control of phosphor uniformity, spot heat conduction process, and uneven wavelength conversion, and achieve uniform color and intensity, high thermal conductivity, and uniform conversion.

Inactive Publication Date: 2020-04-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fluorescent module to solve the technical problems that the uniformity of the existing fluorescent powder is not easy to control when using fluorescent powder in the existing fluorescent module, resulting in uneven wavelength conversion, easily causing glare and forming light spots And the technical problem of slow heat conduction process

Method used

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  • Fluorescent module and laser lighting system

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Experimental program
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Effect test

Embodiment 1

[0041] Select YAG:Ce with a size of 8×8mm 3+ Fluorescent crystal, apply 0.75v, 3A power supply, use a laser diode with a laser light source of 455nm to irradiate YAG:Ce 3+ fluorescent crystals. When the fluorescence is saturated, the laser power is 6W and the luminous flux is 300lm.

[0042] Then choose YAG:Ce with a size of 8×8mm 3+ Fluorescent crystal, 10×10mm semiconductor refrigeration device (TEC), and 15×15mm aluminum heat sink are connected and fixed by thermal conductive silica gel, 0.75v, 3A power supply is applied, and the laser is a 455nm laser diode. A fluorescent module using a TEC and a heat sink converts YAG:Ce 3+ When the fluorescence of the fluorescent ceramic is saturated, the laser power is increased from 6W to 10W, and the luminous flux is increased from 300lm to 500lm. At the same time, the emitted light has no light spots, which shows that it greatly improves the fluorescence saturation threshold.

Embodiment 2

[0044] Use LuAG:Ce with a size of 5×5mm 3+ Fluorescent glass, apply 3V, 3A power supply, use a laser diode with a laser light source of 450nm to irradiate LuAG:Ce 3+ For fluorescent glass, when its fluorescence is saturated, the laser power is 1W and the luminous flux is 200lm.

[0045]Then choose LuAG:Ce with a size of 5×5mm 3+ Fluorescent glass, 15×15mm TEC, and 20×20mm copper radiator are connected by thermal conductive silica gel and fixed with high temperature thermal conductive glue. 3v, 3A power supply is applied, and the laser is a 450nm laser diode. LuAG:Ce 3+ When the fluorescence of the fluorescent glass is saturated, the laser power is increased from 1W to 2.5W, and the luminous flux is increased from 200lm to 400lm, which greatly improves the fluorescence saturation threshold, and the emitted light has no spots.

Embodiment 3

[0047] Choose YAG:Ce with a size of 3×3mm 3+ Fluorescent ceramics, apply 0.75V, 3A power supply, and irradiate YAG:Ce with a laser diode with a laser light source of 460nm 3+ For fluorescent ceramics, when the fluorescence is saturated, the laser power is 5W and the luminous flux is 400lm.

[0048] Then choose YAG:Ce with a size of 3×3mm 3+ Fluorescent ceramic, 10×10mm TEC and 15×15mm copper radiator, the fluorescent ceramic and TEC are connected by brazing, the TEC and the radiator are connected by thermally conductive silica gel and fixed with high-temperature thermally conductive glue, apply 0.75v, 3A power supply, The fan is connected to the heat sink, and the laser is a 460nm laser diode. Through this mod, YAG:Ce 3+ When the fluorescence of the fluorescent glass is saturated, the laser power is increased from 5W to 15W, and the luminous flux is increased from 400lm to 1000lm, which greatly improves the fluorescence saturation threshold, and the emitted light has no spo...

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Abstract

The invention discloses a fluorescent module and a laser lighting system. The fluorescent module comprises a fluorescent layer, a semiconductor refrigeration device and a radiator, a cold end of the semiconductor refrigeration device is connected with the fluorescent layer, a hot end of the semiconductor refrigeration device is connected with the radiator, and the fluorescent layer is an integrally formed fluorescent layer. According to the fluorescent module, the used fluorescent layer is the integrally formed fluorescent layer, so that the uniformity of a fluorescent material in the fluorescent layer can be ensured in the preparation process, the wavelength conversion is uniform, the color and intensity of emergent light are uniform, and light spots are not formed. Meanwhile, the integrally formed fluorescent layer is high in density and heat conductivity, so that heat generated when the integrally formed fluorescent layer is irradiated by laser can be rapidly conducted, and heat dissipation is faster. According to the laser lighting system, due to the fact that the fluorescent module is used, the luminous intensity is greatly improved, and meanwhile it is guaranteed that emergent light spots are uniform.

Description

technical field [0001] The application relates to a fluorescent module and a laser lighting system, belonging to the technical field of laser lighting. Background technique [0002] The traditional laser lighting system mainly uses blue light to excite the fluorescent material of the fluorescent module to obtain yellow outgoing light, and then combines yellow light and blue light to obtain white outgoing light. However, during the illumination process, because the laser power density is too high and the fluorescent material cannot fully absorb the converted laser light, the unconverted laser light is released as heat, resulting in a very short period of time when the local temperature of the fluorescent material irradiated by the high-power laser exceeds At 150 °C, temperature quenching is caused, resulting in fluorescence saturation, which greatly reduces the device performance. [0003] In the fluorescent module in the prior art, fluorescent powder is coated on the substr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/64F21V29/503F21V29/54F21V29/70F21V29/67F21V9/30F21Y115/30
CPCF21V29/503F21V29/54F21V29/67F21V29/70F21K9/64F21Y2115/30F21V9/30
Inventor 孙鹏胡皓阳刘永福蒋俊江浩川
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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