STRUCTURE AND METHOD FOR COMPENSATING TEMPERATURE DEPENDENT MAGNIFICATION AND FOCUS CHANGE
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United States of America Patent
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Issued Date -
Aug 21, 2014
app pub date -
Sep 30, 2011
filing date -
Sep 30, 2011
priority date (Note) -
Abandoned
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Abstract
A method and device is described for compensating ambient temperature dependent magnification and focus change of a zoom lens system, whereby an ambient temperature compensation structure cooperates with a rotational ring and an optical-element adjusting member such that a phase variation between the rotational ring and the optical-element adjusting member in response to an ambient temperature change is compensated and whereby the phase variation characterizes an optical property of the zoom lens system such as magnification or focus.
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