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Light-emitting module

A technology for light-emitting modules and light-emitting elements, which can be applied to light sources, lasers, semiconductor devices of light-emitting elements, etc., and can solve problems such as laser leakage.

Active Publication Date: 2020-12-15
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the phosphor breaks or falls off from a predetermined position, there is a possibility that the laser light will leak out of the lamp without being scattered.

Method used

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Embodiment Construction

[0025] Hereinafter, the present invention will be described based on embodiments with reference to the drawings. The same or equivalent components, members, and processes shown in the drawings are assigned the same reference numerals, and redundant descriptions are appropriately omitted. In addition, the embodiment does not limit the invention, but is only an example, and all the features described in the embodiment or combinations thereof are not necessarily the substantive content of the invention.

[0026] (Vehicle lamps)

[0027] First, a vehicle lamp using the light emitting module of the present embodiment will be described. The vehicle lamp is, for example, a vehicle headlamp unit capable of illuminating the front of the vehicle to a distant place with a light source that emits light with high energy density. figure 1 It is a schematic diagram showing a schematic configuration of a vehicle headlamp unit according to the present embodiment.

[0028] The vehicle headla...

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Abstract

The invention provides a novel technology capable of reducing the possibility that laser light with high energy density leaks to the outside without being scattered. A light-emitting module is provided with: a light-emitting element for emitting laser light; a wavelength conversion member for emitting converted light obtained by means of wavelength-conversion of the laser light; and a detection part (26) which is fixed to the wavelength conversion member and detects the displacement amount of the wavelength conversion member. The detection part (26) includes a piezoelectric material which outputs an electrical signal which changes in accordance with the displacement amount of the wavelength conversion member.

Description

technical field [0001] The present invention relates to a light emitting module using a light emitting element emitting light with relatively high energy density as a light source. Background technique [0002] In recent years, among various lamps that need to illuminate farther places, lamps using laser light as a light source have been proposed. The light emitted by the laser is coherent light and has a very high energy density. Therefore, it is necessary to consider that the laser light with a high energy density emitted from the laser will not leak out of the lamp. In addition, a light emitting module has also been proposed that generates white light by combining a light source that emits blue laser light and a phosphor that converts the blue laser light into light of another color (for example, yellow). [0003] In this light-emitting module, the laser light will be scattered when it passes through the phosphor, so in a normal state, the laser light with high energy de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S41/16F21S41/32F21V7/08F21V9/32F21V14/00F21V23/06H05B45/50F21W102/13F21Y115/30
CPCF21S41/16F21S41/32F21V7/08F21V23/06F21V9/32F21V14/003F21W2102/13F21Y2115/30F21V14/00F21S41/176H01S5/0683F21V23/00F21V9/30H01S5/022
Inventor 曾根秀伦前野雄壮
Owner KOITO MFG CO LTD