Microscope objective lens
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United States of America Patent
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May 17, 2016
Issued Date -
N/A
app pub date -
Feb 6, 2013
filing date -
Aug 25, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A microscope objective lens includes, in order from an object side, a first lens group having positive refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, and is configured such that the first lens group includes, on the most object side, a positive meniscus lens whose concave surface is directed to the object side, such that the second lens group includes a diffractive optical element having positive refractive power, and such that the diffractive optical element is arranged at a position closer to the image than a portion at which the diameter of a light flux passing through the first lens group and the second lens group is the largest.
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