Microscope automatic focusing device and method thereof
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United States of America Patent
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Dec 14, 2010
Issued Date -
N/A
app pub date -
Sep 28, 2007
filing date -
Dec 12, 2006
priority date (Note) -
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Abstract
An auto focus device and method are provided. The device comprises a beam splitter set; a laser emitting device disposed at a first side of the beam splitter set for providing a laser beam to the beam splitter; a lens set disposed at a second side of the beam splitter set and opposing to the testing subject positioned at a third side of the beam splitter set for refracting a reflected beam from a testing subject for generating a light spot; and a photo detecting device disposed with respect to the lens set for receiving the light spot and generating a driving signal.
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