Optical: systems and elements – Having significant infrared or ultraviolet property – Multilayer filter or multilayer reflector
Reexamination Certificate
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.
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“Skillful Use of Design and Simulation Software-Revised Edition,” published by Optronics Ltd., May 14, 2003, pp. 150-152.
Edwards Angell Palmer & & Dodge LLP
Nguyen Thong Q
Nihon Dempa Kogyo Co. Ltd.
Wofsy Scott D.
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