Apparatus for heating a transparent substrate utilizing an incandescent lamp and a heating disk emitting infrared wavelengths
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United States of America Patent
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Oct 19, 1999
Grant Date -
N/A
app pub date -
Mar 1, 1994
filing date -
Mar 2, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heating disk is located inside a vacuum chamber between a substrate holder inside the chamber and a lamp outside the chamber. The lamp emits radiation in a wavelength range which passes through a glass plate in the chamber wall but is absorbed by the heating disk, which may consist of graphite. When the disk is heated to 1000.degree. K. it emits radiation in a wavelength range which can be absorbed by a transparent substrate in the holder.
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