High-luminous flux white laser lighting device with high color rendering index and adjustable color temperature

A lighting device and laser technology, applied in the field of laser lighting, can solve the problems of improving color rendering index, color temperature, thermal or chemical instability, etc., and achieve the effect of avoiding stability problems, avoiding thermal quenching, and improving flexibility

Inactive Publication Date: 2020-08-25
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the thermal or chemical instability of red fluorescent materials under high light injection, methods to improve the color rendering index and reduce the color temperature have not been investigated when considering high-flux LD-based white light sources.

Method used

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  • High-luminous flux white laser lighting device with high color rendering index and adjustable color temperature
  • High-luminous flux white laser lighting device with high color rendering index and adjustable color temperature
  • High-luminous flux white laser lighting device with high color rendering index and adjustable color temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, it is a structural schematic diagram of a laser lighting device using multi-fiber coupling in the present invention, including a red laser diode 1, a blue laser diode 2, a metal package shell 3.1, an optical fiber coupling beam 4.1, an optical fiber transmission 5, a fluorescent ceramic sheet 6, a multi-component Combination sleeve 7.

[0036] The light beams emitted by multiple red laser diodes 1 and multiple blue laser diodes 2 are combined and mixed through optical fibers, and then coupled into optical fibers, transmitted through optical fibers 5, and then incident on the multi-component combination sleeve 7. 6 above the fluorescent ceramic sheet.

[0037] The lighting device includes one or more blue laser diodes and red laser diodes. The package forms include but not limited to TO packages, and the lasing wave bands are blue light (wavelength 440-455nm) and red light (wavelength 625nm-650nm).

[0038] A single blue laser diode can achi...

Embodiment 2

[0045] Such as figure 2 As shown, it is a schematic structural diagram of a laser lighting device using spatial beam combining in the present invention, including red laser diode 1, blue laser diode 2, metal heat sink 3.2, space beam combining 4.2, optical fiber transmission 5, fluorescent ceramic sheet 6, multiple Combination sleeve 7.

[0046]The beams emitted by multiple red laser diodes 1 and multiple blue laser diodes 2 are combined and mixed in space, and then coupled into optical fibers, transmitted through optical fibers 5, and then incident on the multi-element combination sleeve 7. Fluorescent ceramic sheet 6 above.

[0047] The red and blue laser diodes are installed on the heat sink, which can improve the heat dissipation capability of the laser diodes, control the operating temperature of the laser diodes, and realize high-power and stable laser output.

[0048] The lighting device includes one or more blue laser diodes and red laser diodes. The package forms i...

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Abstract

The invention discloses a white-light laser lighting device. The device comprises a laser module, a laser beam combining system and a fluorescence conversion module, wherein the laser module comprisesat least one red laser diode and at least one blue laser diode, light beams emitted by the laser module are coupled into an optical fiber after being combined and mixed by the laser beam combining system, and the mixed laser is transmitted by the optical fiber and then enters the fluorescence conversion module packaged in a multi-element combined sleeve. According to the invention, red laser is used as a means for making up the lack of a red spectrum, so that the stability problem caused by the fluorescence saturation phenomenon of a red fluorescent material can be effectively avoided, the improvement of a high-luminous flux white light color rendering index and the adjustment of the color temperature are realized, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of laser lighting, in particular to a device for improving the color rendering index of a high luminous flux fluorescent conversion laser lighting module and realizing its adjustable color temperature by using a red laser. Background technique [0002] As a supplement to LED lighting, laser lighting has many advantages: (1) no "efficiency drop" phenomenon after lasing; (2) near monochromaticity; (3) smaller volume and higher brightness. [0003] Irradiating yellow phosphor powder with a blue laser is an important way to synthesize white light. At present, the important performance indicators of laser lighting include luminous flux, color rendering index and color temperature. For example, automakers aiming to improve road safety by providing drivers with sufficient visibility in different driving conditions in a compact housing will undoubtedly require high-throughput lighting modules. Color rendering index...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/62F21K9/65F21K9/68F21K9/69F21V19/00F21V23/00F21V29/74F21V9/32F21V9/40F21V13/04
CPCF21K9/62F21K9/65F21K9/68F21K9/69F21V19/00F21V23/003F21V29/74F21V9/32F21V9/40F21V13/04
Inventor 刘喆吴晨昱张韵
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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