Methods and apparatus for positioning optical prisms
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United States of America Patent
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-
Nov 4, 2003
Grant Date -
Oct 24, 2002
app pub date -
Apr 15, 2002
filing date -
Apr 20, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical assembly (11) is formed by individually positioning a plurality of prisms (15) using mechanical reference surfaces (19) which are associated with the prism's diagonal (13) and are preferably formed by extensions of a first sub-prism (17A) beyond a second sub-prism (17B). The mechanical references surfaces and a first side of the prism engage fixed mechanical references (23) associated with a housing. A locking element (21) engages a second side of the prism and forces the mechanical reference surfaces and the first side of the prism against the fixed mechanical references to achieve accurate positioning of the prism's diagonal (13).
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