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Title: Condenser for illuminating a ring field

A series of segments of a parent aspheric mirror having one foci at at a si-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.
Inventors:
 [1]
  1. (Albuquerque, NM)
Issue Date:
OSTI Identifier:
869595
Assignee:
United States of America as represented by Department of Energy (Washington, DC) SNL
Patent Number(s):
US 5361292
Contract Number:
AC04-76DP00789
Research Org:
AT & T CORP
Country of Publication:
United States
Language:
English
Subject:
condenser; illuminating; field; series; segments; parent; aspheric; mirror; foci; si-point; source; radiation; radius; beams; translated; rotated; sets; mirrors; pass; entrance; pupil; camera; fall; coincident; image; entrance pupil; beams pass; parent aspheric; aspheric mirror; si-point source; beams translated; /378/359/