LIGHT-EMITTING DEVICE

• Main Author: KITAJIMA TADAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 27.08.2020
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; DEVICES USING STIMULATED EMISSION; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide a light-emitting device capable of detecting abnormality causing leakage of laser light more reliably.SOLUTION: A light-emitting device comprises a package body 11, a translucent lid part 12 fixed to the package body directly or indirectly, a semiconductor laser element 13 placed in a space surrounded by the package body and the translucent lid part, a wavelength conversion member 14 placed on the path of light from the semiconductor laser element, above the translucent lid part, wiring 15 provided on the light incident surface 14I side of the wavelength conversion member where laser light, emitted from the semiconductor laser element, is incident, a conductive layer 16 electrically connected with the wiring 15, and placed on the top face of the translucent lid part, an opaque insulation member 17 covering the conductive layer and the translucent lid part, and electrodes 18a, 18b placed outside the insulation member, on the surface of the package body, and electrically connected with the conductive layer.SELECTED DRAWING: Figure 1C 【課題】レーザ光の漏れを招く異常をより確実に検出することができる発光装置を提供する。【解決手段】パッケージ本体１１と、パッケージ本体に直接的又は間接的に固定された透光性蓋部１２と、パッケージ本体と透光性蓋部に囲まれた空間内に配置された半導体レーザ素子１３と、透光性蓋部の上方で、半導体レーザ素子からの光の経路上に配置された波長変換部材１４と、半導体レーザ素子から出射されたレーザ光が入射する波長変換部材の光入射面１４Ｉ側に設けられた配線１５と、配線１５と電気的に接続され、透光性蓋部の上面に配置された導電層１６と、導電層と透光性蓋部とを被覆する不透明な絶縁部材１７と、パッケージ本体の表面で、絶縁部材よりも外側に配置され、導電層と電気的に接続された電極１８ａ、１８ｂとを備える発光装置。【選択図】図１Ｃ