Abstract

A single light source–single detector spectrophotometer has been constructed to record continuously transmissivity or reflectivity as a function of wavelength. This instrument is especially useful for thin film samples of small areas glued to substrates, when it is difficult to produce a similar glue layer for the reference beam. Measurements on samples 1 mm² and smaller have been performed. Except for the simple custom-made chopper blade, commercially available components were used throughout. Through the use of reflecting optics no wavelength limitations are encountered.

© 1972 Optical Society of America

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