| 摘要 |
PURPOSE:To improve the reflecting characteristic in a wide wavelength region, by bringing the reflecting surface of an integrating sphere to a diffused reflection surface using a substance showing a flat spectral characteristic and high reflectivity in a visible region. CONSTITUTION:An integrating sphere is formed by bonding an upper semisphere 1-a and a lower semisphere 1-b. Both semispheres 1-a, 1-b are formed by molding and sintering a white resin (tetrafluoroethylene) or white ceramic (aluminum oxide, boron nitride). In colorimetry, the opening 8 of a specimen is brought into contact with the measuring part on the surface of the specimen. The reflected light from the specimen passes through the optical fiber 6 inserted in a light receiving opening and is guided to a light detector not shown in a drawing to be subjected to signal processing. As mentioned above, by bringing the reflecting surface of the integrating sphere to a diffused reflection surface using a substance showing a flat spectral characteristic and high reflectivity in a visible region, the stable illumination of a specimen becomes possible in a wide wavelength range and the measuring accuracy of a colorimetric meter is enhanced. |
