Optical: systems and elements – Light interference – Produced by coating or lamina
Reexamination Certificate
2003-12-15
2009-02-24
Lavarias, Arnel C (Department: 2872)
Optical: systems and elements
Light interference
Produced by coating or lamina
C359S588000, C359S337500, C398S081000, C398S149000
Reexamination Certificate
active
07495832
ABSTRACT:
A light dispersion filter is composed of three or more optically transparent layers each having a value equal to the value of the product of the refractive index and thickness of the optically transparent layer and transmitted light, and a plurality of partially reflective layers arranged alternately with the optically transparent layers and having predetermined reflectivities. Alternatively, a light dispersion filter has a plurality of etalon resonators which are arranged in series such that the value of the product of the refractive index of air and the interval of the etalon resonators is equal to the value of the product of the refractive index and thickness of the optically transparent layers.
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Foley & Lardner LLP
Lavarias Arnel C
NEC Corporation
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