Reduction optical system with a meniscus single-lens element
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United States of America Patent
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Jul 14, 2009
Grant Date -
Dec 28, 2006
app pub date -
Sep 30, 2005
filing date -
Jun 22, 2005
priority date (Note) -
Expired
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Abstract
A reduction optical system for forming, without re-imaging, a reduced image of a subject image formed by a main lens system. The reduction optical system has on the most object side a meniscus single-lens element convex to the object side, allowing for a high-performance, and compact reduction optical system by permitting lens replacement of the main lens system.
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