Abstract

A transmission-type optical interference filter has been constructed which controls the color of the light passing through it in accordance with the magnitude of a dc electrical signal. This is accomplished by magnetostrictively varying the separation of a pair of plane parallel quartz optical flats having thin film coatings. The results indicate that such devices are feasible. Some theory for the filter action is given, and data for this particular laboratory model are shown.

© 1954 Optical Society of America

Interference Filters for Photographic Densitometry

E. K. Letzer and S. A. Powers
J. Opt. Soc. Am. 44(11) 870-874 (1954)

Application of the Two-Beam Interference Microscope to the Study of Surfaces

W. L. Grube and S. R. Rouze
J. Opt. Soc. Am. 44(11) 851-860 (1954)

The Index of Refraction of Germanium Measured by an Interference Method*

D. H. Rank, H. E. Bennett, and D. C. Cronemeyer
J. Opt. Soc. Am. 44(1) 13-16 (1954)

Electronic Fringe Interpolator for an Optical Interferometer*

R. D. Huntoon, Albert Weiss, and Wray Smith
J. Opt. Soc. Am. 44(4) 264-269 (1954)

The Axicon: A New Type of Optical Element

John H. McLeod
J. Opt. Soc. Am. 44(8) 592-597 (1954)