In solar energy utilization studies, correct measurements of flux arriving at other angles to optical axis must be given. Developed device (Cosine diffuser) significantly reduces measurement errors. In combination of radiation transmitter and diffuser co-operating with collimated optical instrument, relative aperture of instrument is filled.
Cosine-corrected optical diffuser
NASA Tech Briefs ; 3 , 3
1979-01-01
Miscellaneous
No indication
English