LIGHT SOURCE DEVICE AND PROJECTOR

• Main Author: YASUMATSU KO
• Format: Patent
• Language: English; Japanese
• Published: 05.04.2018
• 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

PROBLEM TO BE SOLVED: To provide a light source device capable of improving utilization efficiency of light, and a projector.SOLUTION: A light source device comprises: a light emission part including a solid light source; a light separation element separating first light and second light included in light incident from the light emission part; a first incident part receiving the first light separated by the light separation element; a second incident part receiving the second light separated by the light separation element; a first light condensation element arranged on an optical path of the first light between the light separation element and the first incident part, and condensing the first light to be received to be made incident into the first incident part; a second light condensation element arranged on an optical path of the second light between the light separation element and the second incident part, and condensing the second light to be received to be made incident into the second incident part; and a condenser lens arranged, on the optical path of the first light having a long optical path length of the optical path of the first light and the optical path of the second light, closer to the light separation element than the first light condensation element.SELECTED DRAWING: Figure 2 【課題】光の利用効率を向上できる光源装置及びプロジェクターを提供すること。【解決手段】光源装置は、固体光源を含む光出射部と、光出射部から入射される光にそれぞれ含まれる第１光及び第２光を分離する光分離素子と、光分離素子にて分離された第１光が入射される第１入射部と、光分離素子にて分離された第２光が入射される第２入射部と、光分離素子と第１入射部との間の第１光の光路に配置され、入射される第１光を集光して第１入射部に入射させる第１集光素子と、光分離素子と第２入射部との間の第２光の光路に配置され、入射される第２光を集光して第２入射部に入射させる第２集光素子と、第１光の光路、及び、第２光の光路のうち、光路長が長い第１光の光路において、第１集光素子より光分離素子側に配置される集光レンズと、を備える。【選択図】図２