LENS ARRAY PASSIVE ATHERMALIZATION
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United States of America Patent
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Issued Date -
Oct 6, 2016
app pub date -
Apr 1, 2015
filing date -
Apr 1, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lens housing includes a main housing, a lens array, a lens housing, and an athermalization bushing. The lens array has a thermally variable focal length that determines a focal point along a focal axis. The lens housing contains the lens array and is situated within the main housing, and is capable of translating relative to the main housing along the focal axis. The athermalization bushing is situated axially between the lens housing and the main housing, such that thermal expansion of the athermalization bushing translates the lens housing along the focal axis. This translation causes the focal point to remain substantially fixed relative to the main housing as the focal length of the lens array varies across an operational temperature range.
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