Optical device and illumination device

• Main Authors: KITAHARA WATARU, OGURA WATARU, MOMOSE YOSHINORI
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2020
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; 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; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

An optical device having a Lambertian light distribution closer to a linear or quadrangular light distribution is provided. An optical device is provided that comprises: a first reflecting surface disposed so as to reflect first light that has a light distribution having an optical axis parallel to a first axis, to an arc-shaped first region surrounding the first axis; and a second reflecting surface and a third reflecting surface that are disposed such that the second reflecting surface and the third reflecting surface meet each other on the first axis, and such that the first reflecting surface is disposed between the second reflecting surface and the third reflecting surface. 提供对于朗伯配光的光能得到光度分布更接近于均等的线状或方形状的配光的光学装置。提供光学装置，其具有：配置成使具备与第1轴平行的光轴的配光特性的第1光向围绕第1轴的圆弧状的第1范围反射的第1反射面；和在第1轴交叉且夹着第1反射面而配置的第2反射面以及第3反射面。