Method and apparatus for coating a curved surface

Details Method and apparatus for coating a curved surface Method and apparatus for coating a curved surface

2008-07-23

2011-11-15

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C427S566000

Reexamination Certificate

active

08059338

ABSTRACT:
A method involves: determining a percentage by which a thickness of a layer of material, if applied by a selected coating apparatus to a curved surface on a selected optical component having an operating wavelength, would decrease from a central region of the curved surface to an edge region of the curved surface; formulating a multi-layer optical coating that will provide, in the central region of the curved surface, a specified optical performance characteristic for all radiation within a waveband extending from the operating wavelength to a further wavelength, where the further wavelength decreased by the percentage equals the operating wavelength; and using the selected coating apparatus to form the multi-layer optical coating on the curved surface.

REFERENCES:
patent: 5728456 (1998-03-01), Adair et al.
patent: 6768581 (2004-07-01), Yip et al.

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