Optical filter and optical device

Details Optical filter and optical device Optical filter and optical device

2006-10-31

2006-10-31

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S588000, C359S589000, C359S580000

Reexamination Certificate

active

07130125

ABSTRACT:
This optical filter provides a substrate and thin films. The thin films comprise an outermost layer portion and a refractive index varying portion. The refractive index varying portion is formed by laminating alternately towards the substrate a low refractive index layer having a refractive index that is higher than that of air and a high refractive index layer having a refractive index that is higher than the low refractive index layer. The outermost layer portion comprises an outermost low refractive index layer having a refractive index that is higher than that of air, a first outermost high refractive index layer having a refractive index that is higher than that of the outermost low refractive index layer, and a second outermost high refractive index layer having a refractive index that is higher than that of the first outermost high refractive index layer.

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Letter to Shiga International Patent Office from Kuhnen & Wacker, dated Feb. 25, 2005 and dated stamped received from Shiga Int'l Patent Office Apr. 3, 2005.
Office Action (2 pages) issued on Dec. 16, 2005 in Counterpart Chinese Patent Application w/English language translation (4 pages).

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