Optical multi-channel analyzer e.g. spectrometer, for e.g. astronomy, has back scattering device that guides non passage light of one channel for another channel, where light is reflected from filter

摘要

The analyzer has a local resolution passage filter (20), which reflects non passage light to large sections. A back scattering device (42) guides the non passage light of one channel for another channel, where the light is reflected from the filter. The backscattering device is designed in the form of a translucent column, whose surfaces are only partially backscattered, when other surfaces are totally reflected.