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.
- 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-)