Objective lens unit and liquid immersion microscope
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United States of America Patent
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Jul 28, 2020
Grant Date -
Nov 23, 2017
app pub date -
Apr 21, 2017
filing date -
May 18, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An objective lens unit for a liquid immersion microscope includes: a first liquid passage in a pipe shape including an opening disposed at a lens surface end as a lens surface of a lens at a closest side to an observing object, the first liquid passage being coupled to an outside of the objective lens unit, and a second liquid passage in a pipe shape disposed independently from the first liquid passage, the second liquid passage including an opening disposed at a position adjacent to the opening of the first liquid passage on the lens surface end, the second liquid passage being coupled to the outside of the objective lens unit.
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