Paper
15 September 1982 Optical Filtering And Spatial Frequency Coding With Interference Coatings
G. Molesini, D. Bertani, M. Cetica, F. Quercioli
Author Affiliations +
Proceedings Volume 0346, Thin Film Technologies and Special Applications; (1982) https://doi.org/10.1117/12.933795
Event: 1982 Technical Symposium East, 1982, Arlington, United States
Abstract
The transmittance of interference coatings depends both on the wavelength and on the angle of incidence. The wavelength dependence can be used to encode the spatial frequency content of a transparency and to obtain a pseudocolored image. The dependence on the angle of incidence can be used in quasi-monochromatic light to perform spatial frequency filtering in the object space. Analysis, experimental evidence and applications are presented.
© (1982) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Molesini, D. Bertani, M. Cetica, and F. Quercioli "Optical Filtering And Spatial Frequency Coding With Interference Coatings", Proc. SPIE 0346, Thin Film Technologies and Special Applications, (15 September 1982); https://doi.org/10.1117/12.933795
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KEYWORDS
Interference filters

Spatial frequencies

Optical filters

Transmittance

Optical coatings

Image filtering

Bandpass filters

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