Interference Filters With Irregular Spectral Transmittance Characteristics

J. . A . Dobrowolski

doi:10.1117/12.954113

1 March 1974 Interference Filters With Irregular Spectral Transmittance Characteristics

J. . A . Dobrowolski

Proceedings Volume 0050, Optical Coatings: Applications and Utilization I; (1974) https://doi.org/10.1117/12.954113
Event: Acquisition and Analysis of Pictorial Data, 1974, San Diego, United States

Abstract

For many technological applications filters with rather complicated and irregular spectral transmittance curves are required. A number of numerical approaches to the design of all-dielectric interference filters with such characteristics have been described in the past. A brief outline is given of two different automatic thin film synthesis programs developed for this purpose by the author. With these it is possible to design filters with any desired spectral transmittance curve, providing that the range over which the latter is designed is not excessive. The resulting filter designs call for thin films whose refractive indexes are intermediate to those of known materials, and whose thicknesses may assume any value. A brief des-cription of the apparatus and procedures suitable for the experimental realization of such filters is given. The results obtained for a number of prototype filters are discussed.

Citation Download Citation

J. . A . Dobrowolski "Interference Filters With Irregular Spectral Transmittance Characteristics", Proc. SPIE 0050, Optical Coatings: Applications and Utilization I, (1 March 1974); https://doi.org/10.1117/12.954113

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