Electromagnetic filter device

Optical: systems and elements – Light interference – Electrically or mechanically variable

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Details

359582, 359589, 359885, G02B 528

Patent

active

052454746

ABSTRACT:
The optical filter device comprises a stack of thin layers exhibiting a sequences h and g which defines a fractal organization. This device makes it possible to obtain spectrum lines which are extremely fine and very well resolved.

REFERENCES:
patent: 3423147 (1969-01-01), Thelen
patent: 3914023 (1975-10-01), Thelen
patent: 4647812 (1987-03-01), Vriens et al.
patent: 4778251 (1988-10-01), Hall et al.
Furman et al., "A Method for Achieving High Transmittances of Cutoff Interference Filters in a Given Spectral Range" Soviet J. Opt. Technol. (USA) vol. 36, No. 5, Sep.-Oct. 1969 pp. 647-648.
Baumeister et al., "Application of Linear Programming to Antireflection Coating Design", J. Opt. Soc. Am. vol. 67, No. 8, Aug. 1977 pp. 1039-1045.
Blanc; "New Interference Filters for the Weak ultraviolet" optica acta, 1980, vol. 27, No. 9 pp. 1313-1325.
Optics and Spectroscopy, vol. 31, n.degree.1, 1971, pp. 71-75; F. A. Korbolev et al.:"High-contrast lightfilters with multilayer dielectric coatings".
Journal of the Optical Society of America, vol. 72, n.degree.6, juin 1982, pp. 683-687, Optical Society of America, N.Y., US; E Pelletier et al.: "Interference filters with multiple peaks".
Applied Optics, vol. 26, n.degree.20, Octobre 15, 1987, pp. 4487-4490, Optical Society of America, N.Y. US; H. G. Lutz: "Computer-Aided Multilayer design of Optical filters with wide tansmittance bands using SiO2 and TiO2".

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