Measuring equipment for studying cryodeposite of condensable vapour on optical surfaces

This paper has introduced the basic principle,structure and operation instruction of the measuring equipment for studying cryodeposite on optical surfaces.The performence has been tested by the experiment. System errors have been analysed.This device is simple.in structure,complete in function,reliable enough in perforlnence and convenient in use. The measuring wavelength is from near infrared to far infrared and the precision is better than 3%,which close to the same equipment from external.It can be used for measureing all kinds of condensable vapour cryodeposite。It will be an effective device for further developing space technology.