Optical multilayered-film filter

Details Optical multilayered-film filter Optical multilayered-film filter

1999-06-17

2000-09-05

Henry, Jon

Optical: systems and elements

Light interference

Produced by coating or lamina

359588, 359584, 359580, G02B 528

Patent

active

061151807

ABSTRACT:
Described herein is an optical multilayered-film filter which provides less interference and a good optical characteristic and is high in productivity. The optical multilayered-film filter wherein dielectric thin films are stacked on each other in a multilayer form in a single direction, comprises a refractive-index inclined laminated portion in which refractive indices of dielectric thin-film layers are successively inclined and changed in a laminating direction, and an alternately-laminated portion in which a dielectric thin-film layer having a high refractive index and a dielectric thin-film layer having a low refractive index are alternately laminated on each other.

REFERENCES:
patent: 5410431 (1995-04-01), Southwell
patent: 5475531 (1995-12-01), Rahmlow et al.
patent: 5661602 (1997-08-01), Matsuda et al.

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