Phase-only filter for generating an arbitrary illumination patte

Details Phase-only filter for generating an arbitrary illumination patte Phase-only filter for generating an arbitrary illumination patte

1997-10-01

1999-06-01

Henry, Jon W.

Optical: systems and elements

Diffraction

359565, 359569, 359737, G02B 500, G02B 2709, G02B 2742

Patent

active

059093129

ABSTRACT:
A phase-only filter for approximating a given optical transfer function for monochromatic incoherent light. The filter is designed by solving an integral equation for a phase function, and imposing, on a transparent plate, an optical path length for the incoherent radiation equal, in radians, to the phase function modulo 2.pi. plus an overall constant.

REFERENCES:
patent: 4083627 (1978-04-01), Okano
patent: 4804249 (1989-02-01), Reynolds et al.
patent: 5706139 (1998-01-01), Kelly

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