MULTISPECTRAL REFLECTOMETER

摘要

SEQ-228 (Kolls) MULTI SPECTRAL REFLECTOMETER A reflectometer for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The relectometer is adapted to precisely measure absorption resulting from the constituents present in body fluids. The sample to be measured is illuminated by a focused light source at an angle of 45.degree. to its surface. The light diffusely reflected about the normal to the sample falls on a small round bundle of optical fibers. At the opposite end of the bundle, the fibers are arranged into a narrow rectangle. This rectangle forms the entrance slit for a concave holographic diffraction grating. The grating forms images of this entrance slit spectrally separated over a flat field suitable for recording the spectrum on film or on an array of discrete detectors.