Dichroic beamsplitters have use in astronomical research
Dichroic beamsplitters are manufactured to a surface accuracy of λ/20 p-v at 633 nm, surface quality of 10/5, microroughness of less than 1 nm rms, and up to 500-mm diameter. An extensive range of coatings can be supplied, designed to operate at the required angle of incidence. They are used in terrestrial and spaceborne telescope spectrographs.
Optical Surfaces
Kenley, U.K.
LFW Staff
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