QUICK ADJUSTMENT EYECUP FOR OPTICAL VIEWING INSTRUMENTS
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United States of America Patent
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Issued Date -
Aug 21, 2008
app pub date -
Feb 21, 2007
filing date -
Feb 21, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An optical viewing instrument is disclosed generally comprising an eyecup with a cylindrical surface and a housing with an ocular lens portion that has a corresponding cylindrical surface for slidably receiving the eyecup. The ocular lens portion has bearings protruding therefrom, and the eyecup includes longitudinal channels for receiving the bearings as the housing receives the eyecup and curvilinear channels for accommodating the bearings as the eyecup is rotated. In certain embodiments, the ocular lens portion also includes a detent, and the eyecup has a plurality of grooves into which the detent clicks as the eyecup is rotated. In some embodiments, the curvilinear channels are spiral shaped to cause axial motion of the eyecup when rotated.
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