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

Method of lightening radiation darkened optical elements

Patent ·
OSTI ID:6428494
A method of lightening a radiation-darkened optical element in which visible optical energy or electromagnetic radiation having a wavelength in the range of from about 2000 to about 20,000 angstroms is directed into the radiation-darkened optical element; the method may be used to lighten radiation-darkened optical element in-situ during the use of the optical element to transmit data by electronically separating the optical energy from the optical output by frequency filtering, data cooling, or interlacing the optic energy between data intervals.
Assignee:
Dept. of Energy
Patent Number(s):
US 4232228
OSTI ID:
6428494
Country of Publication:
United States
Language:
English