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Title: Condenser for illuminating a ring field

A series of segments of a parent aspheric mirror having one foci at a point source of radiation and the other foci at the radius of a ring field have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ring field camera about one of the beams and fall onto the ring field radius as a coincident image as an arc of the ring field. 5 figs.
Inventors:
Issue Date:
OSTI Identifier:
6883325
Assignee:
Dept. of Energy, Washington, DC (United States) SNL; EDB-94-169449
Patent Number(s):
US 5361292; A
Application Number:
PPN: US 8-060335
Contract Number:
AC04-76DP00789
Resource Relation:
Patent File Date: 11 May 1993
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; CAMERAS; DESIGN; APERTURES; FOCUSING; MIRRORS; POINT SOURCES; OPENINGS; RADIATION SOURCES 440600* -- Optical Instrumentation-- (1990-)