Apparatus for observing arc of lamp
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 28, 2000
Grant Date -
N/A
app pub date -
Feb 20, 1998
filing date -
Feb 21, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lamp arc observing apparatus includes a lens unit installed in the path of light emitted from a lamp, a camera for viewing the image of the electrodes of the lamp through the lens unit, and a light intensity controlling device installed between the lens unit and the camera for controlling the intensity of light incident on the camera so that the camera can capture the image of the electrodes of the lamp.
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