| 摘要 |
PURPOSE:To miniaturize a flow cell, to shorten a sample introducing path to the flow cell, and to reduce a sample amount, by constituting a device such that an optical fiber is movably installed to a spectral image forming surface of a wavelength dispersion optical system to fetch light with an arbitrary wavelength. CONSTITUTION:Light, emitted from a white light source 1, is collected on an inlet slit by collecting lenses 2 and 3, it is separated into spectral components by a wavelength dispersion optical system SL consisting of spherical mirrorws 5, 7, and a dispersion element 6, and is image-formed on a fixing plate 8 which is attached to a spectral image-forming surface wherein plural number of holes 8H is formed. Monochromatic light, passing the holes 8H, is introduced to an optical fiber 9 which has a ferrite magnet 10 mounted to its forward end and can freely move. Arbitrary monochromatic light, transmitted through the optical fiber 9, enters a flow cell 11 through a rod lens 12, and transmission light is detected by a photo detecting element 15. A sample S is sucked by an absorption tube 14 which can be shortened, and this permits to perform a measurement by means of a small amount of the sample, and enables miniaturizing of a device. |
