Apparatus for correcting parallax and/or diopter of camera
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorIchiro Taguchi
Life of this patent
Estimating the term…
Abstract
A parallax and/or diopter correcting apparatus in a camera having a photographing optical system separate from a finder optical system, including a reflecting mirror provided in the finder optical system to change the direction of the optical axis thereof. A reflecting mirror driving mechanism is provided for rotating the reflecting mirror in a first rotational direction to move the segment of the finder optical system optical axis, located in front of the reflecting mirror, towards the optical axis of the photographing optical system, and/or for rotating the reflecting mirror in a second rotational direction perpendicular to the first rotational direction.
Claims29
A parallax and/or diopter correcting apparatus in a camera having a photographing optical system separate from a finder optical system, comprising:
- a motor for driving said photographing optical system;
- a finder optical system driving mechanism for moving a lens assembly of the finder optical system, said finder optical system driving mechanism including a cam mechanism for moving said lens assembly, said cam mechanism comprising a cam plate driven for movement from said motor;
- a reflecting mirror provided in the finder optical system to change a direction of an optical axis thereof;
- and
- a reflecting mirror driving mechanism, including said cam mechanism, for at least rotating said reflecting mirror in a first rotational direction, to move the optical axis of the finder optical system towards an optical axis of the photographing optical system, or for rotating said reflecting mirror in a second rotational direction perpendicular to the first rotational direction.
A parallax correcting apparatus in a camera having a macro-photographing range, and including a photographing optical system separate from a finder optical system, and a motor for driving said photographing optical system, said parallax correcting apparatus comprising:
- a finder optical system driving mechanism for moving a lens assembly of the finder optical system so to vary a focal length of the finder optical system in association with a change in a focal length of the photographing optical system, said finder optical system driving mechanism including a cam mechanism having a cam plate driven from said motor for moving said lens assembly into said macro-photographing range;
- a reflecting mirror for varying a direction of an optical axis of the finder optical system;
- and
- a reflecting mirror driving mechanism, including said cam mechanism, for varying a direction of said reflecting mirror, thus enabling a field of view of the finder optical system to be coincidental with a photographable range thereof, in association with an operation of said finder optical system driving mechanism, which is actuated to transfer the finder optical system to the macro-photographing range.
A diopter correcting apparatus in a camera having a macro-photographing range, and including a photographing optical system separate from a finder optical system, and a motor for driving said photographing optical system, said diopter correcting apparatus comprising:
- a finder optical system driving mechanism for moving a lens assembly of the finder optical system so to vary a focal length of the finder optical system in association with a change in a focal length of the photographing optical system, said finder optical system driving mechanism including a cam mechanism having a cam plate driven from said motor, for moving said lens assembly into said macro-photographing range;
- a reflecting mirror for varying a direction of an optical axis of the finder optical system;
- a reflecting mirror driving mechanism, including said cam mechanism, for moving said reflecting mirror to vary an optical path length of the finder optical system;
- and
- a reflecting mirror rotating mechanism for varying the direction of an optical axis of the finder optical system, correcting a deviation of the optical axis of the finder optical system, caused by a change in optical path length, in association with an operation of said finder optical system driving mechanism which is actuated to transfer the finder optical system to the macro-photographing range.
Dependencies are inferred from the claim text.