Auxiliary optical unit attachable to optical devices, particularly telescopic gun sights
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United States of America Patent
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Nov 16, 2004
Grant Date -
Mar 25, 2004
app pub date -
Jun 16, 2003
filing date -
Jun 17, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An auxiliary optical unit attachable to an optical device for optional use therewith, includes: (a) an afocal teleconverter lens system having a predetermined magnification; (b) a laser range finder system for measuring and displaying the range to viewed object; and (c) a beam splitter located within the auxiliary optical unit such that when the auxiliary optical unit is attached to the optical device, both the displayed range and the object are concurrently viewable by the optical device. In the described preferred embodiment, the optical device is a telescopic gun sight to which the auxiliary optical unit is quickly attachable, to provide range display and increased magnification whenever desired.
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