OPTICAL MEMBER MADE OF RESIN AND LAMP TOOL FOR VEHICLE

摘要

An optical member (10) made of resin has translucency. The optical member (10) made of resin has a surface that includes a fine unevenly profiled portion (16) having fine uneven structures (20) and a flat portion (18) having no fine uneven structures. The fine uneven structures (20) in the fine unevenly profiled portion (16) include a concave portion or a convex portion formed with a pitch that is no larger than the wavelength of visible light. The fine uneven structures (20) in the fine unevenly profiled portion (16) include a concave portion or a convex portion that is no lower than 37 nm.