| 摘要 |
PURPOSE:To enable also a solid angle reflection photometry to be conducted under regular reflection and diffuse reflection conditions by performing an anisotropic photometry only by an integrating sphere type photometer. CONSTITUTION:A measured specimen setting portions are provided on the partially opening surface A of the spherical surface of an integrating sphere 1 and in a position B on the optical axis of an illuminating beam extending from the opening surface A to the outside of the sphere 1 or a reflected measuring beam. The measured specimen setting portion in the position B is formed by a measured specimen holding member provided in a black box 20 formed by the outer surface of the integrating sphere 1 including the opening surface A and a surrounding wall. The measured specimen holding member is pivotally supported so as to be able to be rotatably set at an arbitrary angle relative to the optical axis of the beam and provided so as to be movable in the direction of the optical axis of the beam relative to the opening surface A. A specimen is set to the outer surface of the opening surface A by abutting against it and the illumination beam is made incident from an incident opening 2. A diffusion beam subjected to a multiple reflection on an inner spherical surface is reflected from the surface of the specimen and passes a light receiving opening 3 to reach a suitable optical system and a photo-electric sensor whereby a measurement is conducted. |
