Optical filter and optical instrument

Details Optical filter and optical instrument Optical filter and optical instrument

2007-09-04

2007-09-04

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S584000, C359S588000, C359S589000

Reexamination Certificate

active

11649045

ABSTRACT:
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, the refractive indices of the high refractive index layers become gradually higher. In the second laminated portion, the refractive indices of the high refractive index layers are substantially equal to the highest refractive index of the high refractive index layers constituting the first laminated portion. In the third laminated portion, the refractive indices of the high refractive index layers become gradually lower, and the refractive indices of the low refractive index layers are substantially equal to the lowest refractive index of the low refractive index layers constituting the second laminated portion. The low refractive index layers of the first and second laminated portions have a low refractive index layer uniform portion or a low refractive index layer decreasing portion.

REFERENCES:
patent: 5828489 (1998-10-01), Johnson et al.
patent: 6115180 (2000-09-01), Hirai et al.
patent: 2003/0002157 (2003-01-01), Someno
patent: 0 967 496 (1999-12-01), None
patent: 61-19962 (1986-05-01), None
W.H.Southwell, Using apodization functions to reduce sidelobes in rugate filters, Applied Optics, 28(23), pp. 5091-5094 (Dec. 1, 1989).
X.Wang et al., “Design and experimental approach of optical reflection filters with graded refractive index profiles”, J. Vac. Sci. Technol. A 17(1), pp. 206-211 (Jan./Feb. 1999).
William H. Southwell: Using anodization functions to reduce sidelobes in rugate filters, Applied Optics, Dec. 1, 1989, vol. 28, No. 23, pp. 5091-5094.
P.G. Verly, et al.: Synthesis of high rejection filters with the Fourier transform method, Applied Optics, vol. 28, No. 14, Jul. 15, 1989, pp. 2864-2875.
Handbook of Optics, Second Edition, vol. 1, Fundamentals, Techniques, and Design, Optical Society of America-McGraw-Hill Inc., 1995, pp. 42.49-42.60.
Bertrand G. Bovard: “Rugate Filter Design: The Modified Fourier Transform Technique” Applied Optics, Optical Society of America, Washington, US, vol. 29, No. 1. Jan. 1990.
X. Wang et al.: Design and experimental approach of optical reflection filters with graded refractive index profiles J. Vac. Sci. Technol., vol. 17, No. 1, Jan. 1999, pp. 206-211.
Qu Tang et al.: “Fabrication and characteristics of rugate filters deposited by the TSH reactive sputtering method”, J. Vac. Sci. Technol., vol. 16, No. 6, Nov. 1998 pp. 3384-3388.
Qu Tang et al.: “Fabrication and chracterisitics of rugate filters deposited by the TSH reactive sputtering method”, J. Vac. Sci. Technol., vol. 16, No. 6, Nov. 1998 pp. 3384-3388.
T.D. Rahmlow, Jr. and J.E. Lazo-Wasem, “Rugate and discrete hybrid filter designs”, Jan. 1997, SPIE, vol. 3133, pp. 25-35.
H.A. Abu-Safia et al., “Rugate filter sidelobe suppression using half-apodization”, Sep. 1, 1993, Applied Optics, vol. 32 No. 25, pp. 4831-4835.
B.G. Bovard, “Derivation of a matrix describing a rugate dielectric thin film”, May 15, 1988, Applied Optics, vol. 27 No. 10, pp. 1998-2005.

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