LIGHT SOURCE DEVICE AND HEAD UP DISPLAY DEVICE

• Main Authors: ONO CHOHEI, SUGIYAMA TOSHINORI, NAGAI TOSHIMASA
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2021
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; 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 the like capable of improving a manufacturing yield.SOLUTION: A light source device comprises a light source, a collimator 140 that is arranged to face the light source and includes a reflection unit 142 for adjusting a focal length of light made incident on the collimator 140 from the light source, and a light guide arranged on an emission side of the collimator 140. The reflection unit 142 of the collimator 140 includes a normal focal area 142a that converts the light emitted from the light source and made incident on the collimator 140 into substantially parallel light, a long focus area 142c that converts the light made incident on the collimator 140 into light that diverges slightly compared with substantially parallel light, and a short focus area 142b that converts the light made incident on the collimator 140 into light that converges slightly compared with parallel light.SELECTED DRAWING: Figure 6 【課題】製造歩留まりを向上させることが可能な光源装置等を提供すること。【解決手段】光源装置は、光源と、光源と対向して配置され光源からコリメータ１４０に入射した光の焦点距離を調整する反射部１４２を含むコリメータ１４０と、コリメータ１４０の出射側に配置される導光体とを備えている。コリメータ１４０の反射部１４２は、コリメータ１４０の反射部１４２は、光源から出射し、コリメータ１４０に入射した光を略平行光に変換する通常焦点エリア１４２ａ、コリメータ１４２に入射した光を略平行光に比べ僅かに発散する光に変換する長焦点エリア１４２ｃ、コリメータ１４０に入射した光を平行光に比べ僅かに収束する光に変換する短焦点エリア１４２ｂを含む。【選択図】図６