Adjustable eyepiece for a viewing device
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United States of America Patent
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Jun 17, 2003
Grant Date -
Feb 6, 2003
app pub date -
Aug 1, 2001
filing date -
Aug 1, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An adjustable eyepiece for a viewing device includes a diopter ring with at least one cam follower mounted to the diopter ring and a cam sleeve axially aligned with the diopter ring. The cam sleeve is positioned around a tubular portion of the diopter ring and has at least one cam pathway formed in the cam sleeve. Each cam follower that is mounted to the diopter ring is positioned in a cam pathway such that the cam sleeve may be secured in at least two axial positions relative to the diopter ring. In one embodiment of the invention, three cam pathways are formed in the cam sleeve as L-shaped slots, which may be used in combination with three cam followers to secure the cam sleeve in two axial positions relative to the diopter ring.
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