OPTICAL FILTER, MULTIPLEXER, LIGHT SOURCE APPARATUS, AND IMAGE DISPLAY

摘要

PROBLEM TO BE SOLVED: To provide an optical filter in which visible brightness is kept constant even when the wavelength of a light source varies. SOLUTION: The optical filter has a spectroscopic characteristic inversely proportional to specific visible sensitivity characteristic in predetermined wavelength band. The visible brightness is kept constant even when the wavelength of the light emitted from the light source varies by arranging the optical filter between the light source such as a semiconductor laser and the eyes of a user. COPYRIGHT: (C)2009,JPO&INPIT