Optical apparatus
AssigneeOlympus Optical Co., Ltd.
InventorWataru Koide
Life of this patent
Estimating the term…
Abstract
An optical apparatus according to the present invention has an eyepiece side body internally equipped with a diopter adjusting ring for diopter adjustment of an eyepiece, a barrier, an eyecup ring including a driving pin for opening and closing the barrier and a cam groove for advancing and retreating an eyecup fitted in an eyecup ring. When the eyecup ring is rotated counterclockwise, the barrier is rotated up to an opening position, and when further rotated, the eyecup is twisted up. When operated in the reverse direction, the eyecup is drawn in and the barrier is rotated to a closing position. It is possible to easily accomplish the moving and opening/closing operations for protecting a hood member (eyecup) and an optical system (eyepiece), and the structures thereof are simple.
Claims24
An optical apparatus comprising:
- an optical system having an optical axis;
- a hood member;
- and
- a barrier member positioned between one end portion of said hood member and an end portion of said optical system, said barrier member being moveable in a plane transverse to the optical axis between a position where said barrier member protects said optical system and a position where said barrier member separates from said optical system.
An optical apparatus having an eyecup member, and a viewing optical system having an optical axis, the viewing optical system comprising:
- a barrier moveable in a plane transverse to the optical axis between a position where said barrier protects the viewing optical system and a position where said barrier separates from the viewing optical system;
- and
- an operating member operably connected to said barrier for opening and closing said barrier and for moving said eyecup member along a direction corresponding to the optical axis of the viewing optical system.
An optical apparatus comprising:
- an optical system having an optical axis;
- a barrel for holding said optical system;
- a barrier member moveable in a plane transverse to the optical axis between a state of sheltering said optical system and a state of releasing said optical system;
- and
- barrier moving means operated rotationally about the optical axis of said optical system to move said barrier member relative to said optical system.
An optical apparatus comprising:
- a viewing optical system having an optical axis;
- an eyecup member;
- an eyecup holding member for holding said eyecup member;
- a barrier member movable between a closed position where said barrier member protects said viewing optical system and an open position where said barrier member separates from said optical system;
- and
- an operating member which is driven rotationally within a predetermined rotation range around said optical axis to move said barrier member between said open and closed positions and further driven to move said eyecup member along said optical axis of said viewing optical system,
- wherein said barrier member is opened and closed in a first range of said rotation range of said operating member, and said eyecup member is moved along said optical axis in a second range which is continuous with said first range.
An optical apparatus comprising:
- a viewing optical system having an optical axis;
- an eyecup member;
- a barrier member movable between a closed position where said barrier member protects said viewing optical system and an open position where said barrier member separates from said optical system;
- an operating member which is driven rotationally within a predetermined rotation range around said optical axis to move said barrier member between said open and closed positions and further driven to move said eyecup member along said optical axis of said viewing optical system;
- and
- a body member which supports said operating member,
- wherein said barrier member is opened and closed in the rotation range in which said operating member is rotated, and said eyecup member is moved along said optical axis in a linear-movement range of said operating member which is continuous with said rotation range.
Dependencies are inferred from the claim text.