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US 10,295,816 B2Granted
Surgical microscope
AssigneeMitaka Kohki Co., Ltd.
InventorsShinpei Omote, Masakazu Nakamura, Masao Doi
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Abstract
A surgical microscope employs a pentaprism beam splitter as a branching unit to branch each beam passed through variable power optical systems into a first beam and a second beam, the first beam being horizontally reflected for an eyepiece unit, the second beam being vertically transmitted for an imaging device. The pentaprism alone is capable of simultaneously conducting reflection to provide an erect image and transmission to provide a photographing image, thereby reducing the number of optical parts in a microscope body of the surgical microscope.
Claims4
A surgical microscope comprising:
- a microscope body including:
- an objective optical system defining a vertical optical axis;
- a pair of variable power optical systems each defining an optical axis in parallel with the vertical optical axis of the objective optical system;
- and
- a branching unit configured to branch light beams passing through each of the variable power optical systems into a first beam and a second beam, the first beam being horizontally reflected by the branching unit, and the second beam being vertically transmitted through the branching unit;
- an eyepiece unit attached to the microscope body and configured to receive the first beam from the microscope body;
- and
- an imaging device provided in the microscope body and configured to receive the second beam, wherein
- the branching unit is a pentaprism beam splitter.
6 more elements
Dependencies are inferred from the claim text.