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US 5,859,727 AGranted
Objective unit
AssigneeOlympus Optical Co., Ltd.
InventorAtsuhiro Tsuchiya
Life of this patent
Estimating the term…
Abstract
An objective unit in which illumination light is applied through an annular illumination light path surrounding lenses for guiding observation light coming from an object of observation, and which includes a shared lens for guiding the illumination light from the illumination light path to the object of observation and for guiding the observation light to the lenses.
Claims12
An objective unit comprising:
- a plurality of lenses for guiding observation light reflected from a sample;
- an inner frame surrounding and holding said plurality of lenses;
- an outer frame surrounding said inner frame;
- an annular path provided between said inner frame and said outer frame along which illumination light passes;
- and
- a deflecting member for deflecting the illumination light passing along said annular path to thereby guide the illumination light to the sample;
- wherein said plurality of lenses includes a shared lens for allowing passage of the observation light and the illumination light, and
- wherein said inner frame includes at least one through hole for guiding the illumination light deflected by said deflecting member to the sample through said shared lens, and at least one transparent member inserted in said at least one through hole.
5 more elements
An objective unit comprising:
- a plurality of lenses for guiding observation light reflected from a sample;
- an inner frame surrounding and holding said plurality of lenses;
- an outer frame surrounding said inner frame;
- an annular path provided between said inner frame and said outer frame along which illumination light passes;
- and
- a deflecting member for deflecting the illumination light passing along said annular path to thereby guide the illumination light to the sample;
- wherein said plurality of lenses includes a shared lens for allowing passage of the observation light and the illumination light, and
- wherein said inner frame includes at least one transparent portion for guiding the illumination light deflected by said deflecting member to the sample through said shared lens.
5 more elements
An objective unit comprising:
- a plurality of lenses for guiding observation light reflected from a sample;
- an inner frame surrounding and holding said plurality of lenses;
- an outer frame surrounding said inner frame;
- an annular path provided between said inner frame and said outer frame along which illumination light passes;
- and
- a deflecting member for deflecting the illumination light passing along said annular path to thereby guide the illumination light to the sample;
- wherein said plurality of lenses includes a shared lens for allowing passage of the observation light and the illumination light, and
- wherein said inner frame includes a through hole for guiding the illumination light deflected by said deflecting member to the sample through said shared lens.
5 more elements
Dependencies are inferred from the claim text.