High-efficiency mixed light source for miniature illumination

Abstract

The invention discloses a high-efficiency mixed light source for miniature illumination. The high-efficiency mixed light source comprises a diode pumped solid-state laser (DPL) light source, a DPL shaping lens group, a laser diode (LD) light source, an LD shaping lens group, a light converging mirror A, a light emitting diode (LED) light source, an LED shaping lens group and a light converging mirror B, wherein the DPL light source transmits green laser and outputs the green laser to the light converging mirror A through the DPL shaping lens group; the LD light source transmits red laser and outputs the red laser to the light converging mirror A through the LD shaping lens group; the green laser and red laser in the light converging mirror A are converged and superposed and are output to the light converging mirror B; the LED light source transmits blue laser and outputs the blue laser to the light converging mirror B through the LED shaping lens group; and the light output by the light converging mirror A in the light converging mirror B and the blue laser are converged and superposed, and the light is output. According to the high-efficiency mixed light source, the blue light ratio is small, a single single-color LED is used for illumination, and compared with the traditional LED array, the high-efficiency mixed light source has the advantages that the size is small under the condition that the micro projection illumination requirement is met, and meanwhile the radiating problem in a miniature illumination system is solved.

Description

technical field [0001] The invention relates to a high-efficiency mixed light source for miniature lighting, belonging to the technical field of lighting sources. Background technique [0002] With the miniaturization of various digital products and the continuous improvement of people's requirements for the performance and portability of display devices, micro-lighting systems have become a research hotspot in electronic consumer behavior under the condition of rapid development of semiconductor technology. The current mature light bulb light source is far from meeting the needs of miniaturization. In order to overcome this shortcoming, the technology and structure of using a relatively small laser light source for micro-illumination are being actively developed. [0003] DPL (Diode Pumped Solid-state Laser, semiconductor pumped solid-state laser), as a solid-state laser with semiconductor laser as the pump source, has advantages: 1) long working time, 2) low power consumpt...

AI Technical Summary

Problems solved by technology

Due to the low energy efficiency of LEDs, LED arrays must be used to achieve the application lighting level. Not only is the volume large, the heat dissipation problem is difficult to solve, and its own color reproduction ability is poor, which cannot meet the needs of digital products such as projectors; and laser light sources also have costs. High, difficult industrialization and other problems; these problems limit the development of micro lighting sources

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