| 摘要 |
PROBLEM TO BE SOLVED: To provide a catoptric system that converges light, using a simple structure, while maintaining with irradiation conditions from a light source, and also to provide an optical system for a diffused light source measuring apparatus which facilitates simultaneous measuring of all luminous fluxes and saves time and labor for measuring operation, has a simple structure, without requiring a highly sensitive detector, and makes accurate general optical measurement possible, even in the presence of uneven luminance. SOLUTION: The catoptric system 10 is equipped with first and second rotary ellipsoidal reflecting mirrors 2, 3 having the ellipsoid of a rotating elliptical body with a range of≤180°. The two reflecting mirrors are placed opposite, in such a manner that the second focal position of the first mirror and the first focal position of the second mirror are made to coincide with each other. The first mirror has, at the first focal position, a light source installation section 4 for which the light source is installed orthogonally to a plane including the major axis. The second mirror has, at the second focal position, a light-receiving part installation section 5 for which the light-receiving part is installed that receives the light emitted from the light source. COPYRIGHT: (C)2005,JPO&NCIPI
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