Focus detecting apparatus for a telescope system
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United States of America Patent
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Mar 2, 1999
Grant Date -
N/A
app pub date -
Apr 1, 1997
filing date -
Apr 1, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An automatic focus detecting telescope which offers easy maintenance and which, when applied to a surveying instrument such as an auto-level, provides easy detachment and attachment of an optical horizontal compensation system. Even if the optical horizontal compensation system is detached, no readjustments are required for the automatic focusing apparatus and the eyepiece optical system.
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