| 摘要 |
PURPOSE:To make the multiwave photometry possible by a single measuring system, by supporting the plural optical filters having a different transmitting wavelength band on the same circumference of a circle and also, on a measuring optical path so as to be arranged successively. CONSTITUTION:White light generated from a light source 1 containing a various kinds of wavelength components is reflected by a source mirror 2 and is irradiated to a sample to be measured 4 through a lens 3, and is made incident to a photodetector 23 through a lens 5, an optical interference filter 17 and a lens 22. The plural optical filters transmitting only a monochromatic light having different wavelengths are arranged on a rotating filter part 21 and plural magnets for position detection 19, a magnet for rotation detection 20 and pickup coils 26, 27, are provided on the outer circumference part. Hereby, it is known that which filter is placed on the measuring optical path, and transmissivity of sample at every each wavelength is measured. |
