Method of making near infrared polarizers
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United States of America Patent
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Apr 30, 1985
Grant Date -
N/A
app pub date -
Jul 1, 1980
filing date -
Jul 1, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing near infrared polarizers is disclosed using holograc techniques. The interference pattern from two intersecting laser beams is used to produce a plane grating in a layer of photoresist which has been deposited on a layer of conductive material which in turn has been used to coat a substrate. Ion milling reproduces the plane grating in the conductive material layer by selectively etching away a uniform level of material.
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