Optical apparatus
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United States of America Patent
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Jun 16, 2009
Grant Date -
Dec 1, 2005
app pub date -
May 27, 2005
filing date -
May 31, 2004
priority date (Note) -
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Abstract
An optical apparatus having a viewfinder optical system includes a Fresnel lens capable of converging light onto a focusing screen and a plurality of microprism groups disposed in positions corresponding to focusing areas. Beams of light are projected onto each microprism group.
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