PHOSPHOR MEMBER AND LIGHT SOURCE DEVICE

• Main Authors: KUNII Yasuhiko, NOMURA Ryo
• Format: Patent
• Language: English; French; Japanese
• Published: 10.01.2019
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; BLASTING; CINEMATOGRAPHY; ELECTROGRAPHY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; HOLOGRAPHY; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; PHOTOGRAPHY; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

The present invention reduces the attenuation of generated fluorescent light and improves the fluorescent light output of a phosphor member. This phosphor member includes a substrate and a phosphor film that is arranged on the substrate and that comprises phosphor particles for converting excitation light into fluorescent light. The phosphor film includes a substrate-side surface positioned on the substrate side and an excitation light incidence surface that is positioned on the opposite side from the substrate-side surface and on which excitation light is incident. An inclined surface inclined toward the substrate-side surface is formed on the excitation light incidence surface. La présente invention concerne la réduction de l'atténuation de la lumière fluorescente générée et l'amélioration de la sortie de lumière fluorescente d'un élément luminophore. Cet élément luminophore comprend un substrat et un film de luminophore qui est disposé sur le substrat et qui comprend des particules de luminophore pour convertir la lumière d'excitation en lumière fluorescente. Le film de luminophore comprend une surface côté substrat positionnée sur le côté substrat et une surface d'incidence de lumière d'excitation qui est positionnée sur le côté opposé à la surface côté substrat et sur laquelle une lumière d'excitation est incidente. Une surface inclinée vers la surface côté substrat est formée sur la surface d'incidence de lumière d'excitation. 発生した蛍光光の減衰を減らし、蛍光体部材の蛍光光出力を向上させる。基板と、基板の上に配置され、励起光を蛍光光に変換する蛍光体粒子を含む蛍光体膜と、を含む蛍光体部材であって、蛍光体膜は、基板側に位置する基板側面、及び当該基板側面とは反対側に位置し、励起光が入射する励起光入射面を含み、励起光入射面には、基板側面に向かって傾斜する傾斜面が形成される。