Optical low pass filter

Details Optical low pass filter Optical low pass filter

2007-05-08

2007-05-08

Nguyen, Thong Q (Department: 2872)

Optical: systems and elements

Having significant infrared or ultraviolet property

Multilayer filter or multilayer reflector

C359S361000, C359S586000, C359S587000

Reexamination Certificate

active

11201571

ABSTRACT:
An optical device includes first and second laminated films of alternate layers of optical thin films of high refractivity material and low refractivity material, and having an optical film thicknesses of “a” and “b” respectively; wherein b>a, and an optical plate on which the first laminated film and the second laminated film are formed in sequence from at least one primary surface of the optical plate, wherein a third laminated film comprised of a lamination of optical thin films of high refractivity material and low refractivity material and having an optical film thickness “c” is interposed between the first laminated film and the second laminated film, wherein b>c>a. As a result, an optical device which has spectral characteristics where ripple in the opaque zone which blocks infrared light is suppressed, can be obtained.

REFERENCES:
patent: 4229066 (1980-10-01), Rancourt et al.
patent: 5103337 (1992-04-01), Schrenk et al.
patent: 5448404 (1995-09-01), Schrenk et al.
patent: 5705882 (1998-01-01), Oughton et al.
patent: 6356020 (2002-03-01), Cottaar
patent: 6927900 (2005-08-01), Liu et al.
patent: 7157159 (2007-01-01), Kondo
patent: 1 437 609 (2004-07-01), None
patent: 2 103 830 (1983-02-01), None
“Skillful Use of Design and Simulation Software-Revised Edition,” published by Optronics Ltd., May 14, 2003, pp. 150-152.

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