Imaging system having a folded optical axis
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United States of America Patent
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May 6, 2014
Grant Date -
Mar 25, 2010
app pub date -
May 11, 2009
filing date -
May 10, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
An imaging system having a folded optical axis that is accomplished through the effect of a first lens group, a prism, and a second lens group wherein a second surface of the prism is a mirror wherein the folded imaging system exhibits a horizontal field of view (HFOV) greater than 160 degrees and a vertical field of view (VFOV) greater than 80 degrees. Further aspects include a conjugate ratio of the lenses to be substantially 5.47 and a ratio of the entire lens focal length to the focal length of the first lens to be substantially −0.309.
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