LD light-emitting device and preparation method thereof

Abstract

The invention relates to the field of optical elements, in particular to an LD light-emitting device and a preparation method thereof. The LD light-emitting device comprises a substrate, a fluorescentlayer, a heat sink, an LD chip and an optical lens. The backlight surface of the fluorescent layer is attached to the substrate; the LD chip is mounted on the heat sink, and at least part of light beams emitted by the LD chip can irradiate the reflective surface of the fluorescent layer; the optical lens is connected with the substrate. The whole backlight surface of the fluorescent layer can conduct heat through the substrate, the direct contact area of the fluorescent layer and the substrate is increased, and the heat transfer efficiency is improved. The heat of the fluorescent layer is quickly dissipated through the substrate; light of the LD chip can only irradiate the reflective surface of the fluorescent layer, so that heat conducted to the fluorescent layer by the LD chip is reduced, and the heat dissipation problem of the fluorescent layer is improved to a great extent. The situation that the fluorescent layer fails due to poor heat dissipation is effectively improved, and theproblem of light attenuation or color drift of the LD light-emitting device is further solved

Description

technical field [0001] The present application relates to the field of optical elements, in particular to an LD light-emitting device and a preparation method thereof. Background technique [0002] At present, the light-emitting devices of laser diodes usually use fluorescent functional materials to convert monochromatic laser light into white light; fluorescent materials have low thermal conductivity and poor thermal stability, and the blue laser emitted by laser diodes is likely to cause thermal quenching failure of fluorescent materials. Cause problems such as light fading or color drift. Contents of the invention [0003] The purpose of the embodiments of the present application is to provide an LD light-emitting device and a manufacturing method thereof, which aims to improve the problem that the laser light emitted by the existing LD chip easily causes the failure of the fluorescent material. [0004] The first aspect of the present application provides an LD light ...

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Problems solved by technology

[0003] The purpose of the embodiment of the present application is to provide an LD light-emitting device and its preparation method, which aims to improve the problem that the laser emitted by the existing LD chip easily leads to the failure of the fluorescent material

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