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US 8,300,308 B2Granted
Eyepiece base unit and microscope
AssigneeNikon Corporation
InventorMasaaki Tamura
Life of this patent
Estimating the term…
Abstract
An eyepiece base unit and a microscope with which a phase contrast observation function can be easily added to the microscope. The eyepiece base unit is removably attached to a main unit of the microscope, and includes, in a state of being attached to the microscope, a pupil conjugate plane, which is a plane conjugate with an image side focal plane of an objective lens in an observation optical system of the microscope. By rotating a turret around a central axis, phase plates installed in the turret can be inserted into the pupil conjugate plane.
Claims1
An inverted microscope that can perform phase contrast observation, comprising:
- an objective lens;
- an eyepiece tube;
- a main unit that includes a portion of an observation optical system between the objective lens and the eyepiece tube;
- and;
- a first eyepiece base unit that houses a phase plate for phase contrast observation and that can be removably attached to the main unit so as to be replaceable with a second eyepiece base unit housing another optical device for performing observation other than phase contrast observation, the first eyepiece base unit in a state of being attached to the main unit being configured to be able to install at a position conjugate with a pupil of the objective lens, wherein
- the eyepiece tube can be removably attached to the first eyepiece base unit and the second eyepiece base unit;
- the first eyepiece base unit further comprises an eyepiece base unit body;
- the phase plate is housed in the eyepiece base unit body;
- and
- a side port cylinder for installing a camera for imaging the observation sample is attached to the eyepiece base unit body.
7 more elements
Dependencies are inferred from the claim text.