Endoscope
AssigneeFUJIFILM Corporation
InventorTakuro ASAOKA
Life of this patent
Estimating the term…
Abstract
An endoscope includes: an insertion part; an optical system ; a sensor; a first holding part; a shaft member fixed to the first holding part and extending toward a base end side relative to the first holding part; an actuator that moves the shaft member in an optical axis direction along an optical axis of the optical system; and a first restriction part that restricts a position of the shaft member in a first direction and a second direction perpendicular to the optical axis, a length of the shaft member in the first direction and that in the second direction are shorter than a diameter of a first lens, and a length between a distal end of the first restriction part and a base end of the first restriction part in the optical axis direction is longer than a length of the first lens in the optical axis direction.
Claims30
An endoscope comprising:
- an insertion part that is inserted into a subject;
- an optical system that is disposed on a distal end side of the insertion part and includes a first lens;
- a sensor that captures an optical image of the subject formed by the optical system;
- a first holding part that holds the first lens;
- a shaft member that is fixed to the first holding part and extends toward a base end side relative to the first holding part;
- an actuator that moves the shaft member in an optical axis direction along an optical axis of the optical system;
- and
- a first restriction part that restricts a position of the shaft member in directions perpendicular to the optical axis,
- wherein the directions perpendicular to the optical axis include a first direction and a second direction perpendicular to the first direction,
- a length of the shaft member in the first direction and a length of the shaft member in the second direction are shorter than a diameter of the first lens, and
- a length between a distal end of the first restriction part and a base end of the first restriction part in the optical axis direction is longer than a length of the first lens in the optical axis direction.
Dependencies are inferred from the claim text.