Method for applying shading coatings to lamps
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United States of America Patent
Stats
-
Sep 11, 2001
Grant Date -
Apr 5, 2001
app pub date -
Nov 30, 2000
filing date -
Feb 4, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A greensheet comprising an inorganic pigment and an inorganic matrix component is applied to a surface of a glass substrate and fired for fixing. The formed shading film has a portion whose thickness is 90% or more of the maximum thickness of the shading film within the range of 0.5 mm from an edge of the shading film. Thus, a shading film that has distinct end faces and has an excellent thickness uniformity can be formed with a good positional accuracy. Therefore, a lamp having a highly precise light distribution property can be obtained. In addition, a lamp having such a property can be obtained with a few steps and at a low cost.
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Cited Art Landscape
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