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U.S. Department of Energy
Office of Scientific and Technical Information

Ringlight for use in high radiation

Patent ·
OSTI ID:7310164
A ringlight having an annular array of light-emitting elements centered about a viewing passage has an outer annular body with an inner annular body fitted concentrically within the outer body to form an annular void and a light-emitting aperture therebetween. A plurality of optical fibers extends into the void with end portions of the optical fibers secured therein to form an annular array at the light-emitting aperture. The first and second annular bodies cooperate to angle the end portions of the optical fibers towards a central axis of the viewing passage. 3 figs.
DOE Contract Number:
AC11-76PN00014
Assignee:
Dept. of Energy, Washington, DC (United States)
Patent Number(s):
A; US 5143436
Application Number:
PPN: US 7-665112
OSTI ID:
7310164
Country of Publication:
United States
Language:
English