Endoscope objective lens unit and endoscope
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United States of America Patent
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May 14, 2013
Grant Date -
Jun 14, 2012
app pub date -
Dec 8, 2011
filing date -
May 20, 2010
priority date (Note) -
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Abstract
An endoscope objective lens unit includes a front lens group and a rear lens group with a diaphragm interposed therebetween. The front lens group includes a first lens and a second lens, and the rear lens group includes a third lens, a fourth lens and a fifth lens. The endoscope objective lens unit satisfies following expressions (1A) to (4): (1A) −3
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