CHANGEABLE LENS BARREL

摘要

A changeable lens barrel includes a fixed barrel formed in an annular shape a straight-advancing barrel housed in the fixed barrel during non-photographing and extended to an outside of the fixed barrel during photographing, and a first annular member that turns according to manual operation. When the changeable lens barrel is in a photographable state, a part of an outer circumference of the first annular member is exposed to an outside and a front end face of the annular member forward in an optical axis direction is located further forward than a front end face of the fixed barrel, and, when the changeable lens barrel is in an un-photographable state, a rear end face backward in the optical axis direction is within the fixed barrel and the rear end face is present further backward in the optical axis direction than when the changeable lens barrel is in the photographable state.

主权项

1. A changeable lens barrel comprising:
a fixed barrel formed in an annular shape and having length in an optical axis direction; a straight-advancing barrel relatively moving in the optical axis direction with respect to the annular fixed barrel and housed in the fixed barrel in a non-photographing state and extended to an outside of the fixed barrel in a photographing state; and a first annular member placed in the straight-advancing barrel, having length in the optical axis direction, and made of an annular member that turns around the optical axis according to manual operation, wherein when the changeable lens barrel is in a photographable state, at least a part of an outer circumference of an exterior of the first annular member is exposed to an outside and a front end face of the annular member forward in an optical axis direction is located further forward than a front end face of the fixed barrel forward in the optical axis direction, and, when the changeable lens barrel is in an un-photographable state in which the changeable lens barrel is further retracted in the optical axis direction than in the photographing state, a rear end face backward in the optical axis direction is within the fixed barrel and the rear end face is present further backward in the optical axis direction than when the changeable lens barrel is in the photographable state.