Hybrid diffractive optical filter

Details Hybrid diffractive optical filter Hybrid diffractive optical filter

1990-06-15

1992-06-02

Arnold, Bruce Y.

Optical: systems and elements

Having significant infrared or ultraviolet property

Multilayer filter or multilayer reflector

359576, 359589, G02B 518, G02B 528

Patent

active

051192314

ABSTRACT:
A hybrid filter having an inherently planar interference stack adhered to a nonplanar diffractive grating. The filter can have a planarization layer between the stack and grating. The hybrid filter has a spectral light transmittance value that is at least equal to or greater than the transmittance value of the least transmissive filter component. The filter also has a spectral bandwidth that is narrower than the spectral bandwidth of either filter component.

REFERENCES:
patent: 4009939 (1977-03-01), Okano
patent: 4114978 (1978-09-01), Bostick et al.
patent: 4313648 (1982-02-01), Yano et al.
patent: 4322125 (1982-03-01), Warren
patent: 4534620 (1985-08-01), Gale et al.
patent: 4915463 (1990-04-01), Barbee, Jr.
patent: 4983002 (1991-01-01), Shikama et al.

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