System for illuminating an annular field

Details System for illuminating an annular field System for illuminating an annular field

1978-02-06

1980-12-23

Walsh, Donald P.

Illumination

Light source and modifier

Including reflector

313220, 350 55, 353 99, F21V 700

Patent

active

042413907

ABSTRACT:
This invention relates to a system for illuminating an annular field disposed about an axis characterized by an arcuate source of radiation disposed concentrically about the axis, and an annular field imaging system having an axis of symmetry coincident with said axis for forming an image of the arcuate source on the annular field.

REFERENCES:
patent: 3117248 (1964-01-01), Lake
patent: 3748015 (1973-07-01), Offner
patent: 3821763 (1974-06-01), Scott
patent: 3878419 (1975-04-01), Lafiandra
patent: 3927342 (1975-12-01), Bode
patent: 3951546 (1976-04-01), Markle

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