LIGHT SOURCE DEVICE AND PROJECTOR

• Main Author: AKIYAMA KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2023
• 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; 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

To provide a light source device and a projector capable of efficiently extracting illumination light.SOLUTION: A light source device includes: a substrate having a supporting surface; a light source emitting first light in a first wavelength range; a first optical member having a first optical layer facing the supporting surface and reflecting the first light emitted from the light source; a first wavelength conversion layer disposed on the supporting surface and converting the first light into second light in a second wavelength range; a second wavelength conversion layer disposed at a first wavelength conversion layer side with respect to the first optical layer, and converting the first light into third light in a third wavelength range; and a light emitting portion formed by at least the substrate and the first optical member and emitting light. The first optical layer is inclined with respect to a light incident surface and further reflects the second light and the third light, the second wavelength conversion layer converts a part of the first light emitted from the light source into the third light, the first wavelength conversion layer converts a part of the first light emitted from the second wavelength conversion layer into the second light, and the light emitting portion emits the first light, the second light, and the third light.SELECTED DRAWING: Figure 5 【課題】照明光を効率良く取り出すことができる、光源装置およびプロジェクターを提供する。【解決手段】本発明の光源装置は、支持面を有する基板と、第１波長帯の第１光を射出する光源と、支持面に対向し光源から射出された第１光を反射する第１光学層を有する第１光学部材と、支持面に配置され、第１光を第２波長帯の第２光に変換する第１波長変換層と、第１光学層に対して第１波長変換層側に配置され、第１光を第３波長帯の第３光に変換する第２波長変換層と、少なくとも基板および第１光学部材により形成され、光を射出する光射出部と、を備える。第１光学層は、光入射面に対して傾斜し、第２光および第３光をさらに反射し、第２波長変換層は、光源から射出された第１光の一部を第３光に変換し、第１波長変換層は、第２波長変換層から射出された第１光の一部を第２光に変換し、光射出部は、第１光、第２光および第３光を射出する。【選択図】図５