Compact optical system for electronic camera
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorMakoto Mogamiya
Life of this patent
Estimating the term…
Abstract
An electronic camera includes a camera body, a plurality of image pickup devices which are immovably positioned in the camera body, a photographing optical system and a finder optical system. An optical element is provided and is movable with respect to the finder optical system and the image pickup devices between a first position in which a bundle of light transmitted through the photographing optical system is made incident upon the finder optical system, and a second position in which the bundle of light transmitted through the photographing optical system is split and the split beams are made incident onto the image pickup devices.
Claims20
An electronic camera, comprising:
- a camera body;
- a plurality of image pickup devices immovably positioned in said camera body;
- a photographing optical system;
- a finder optical system;
- and
- an optical element movable, with respect to said finder optical system and said plurality of image pickup devices, between a first position in which a bundle of light transmitted through said photographing optical system is made incident upon said finder optical system and a second position in which said bundle of light transmitted through said photographing optical system is split into beams, said split beams being made incident onto each of said plurality of image pickup devices, said optical element being formed so that a plane formed by said bundle of incident light to said finder optical system is normal to a plane formed by said bundle of incident light to each of said plurality of image pickup devices.
An electronic camera, comprising:
- a camera body;
- a photographing optical system;
- a plurality of image pickup devices immovably provided in said camera body, one of said plurality of image pickup devices being arranged normal to a plane which includes an optical axis of said photographing optical system, another of said plurality of image pickup devices being arranged parallel to said optical axis and normal to said one of said plurality of image pickup devices;
- a finder optical system having an optical axis which is different from said optical axis of said photographing optical system;
- and
- an optical element movable, with respect to said photographing optical system and said finder optical system, between a first position and a second position, said optical element having a light reflecting surface which reflects a bundle of light transmitted through said photographing optical system toward said finder optical system when said optical element is located at said first position and a beam splitting surface which splits said bundle of light transmitted through said photographing optical system into beams that are made incident onto each of said plurality of image pickup devices when said optical element is located at said second position, such that a plane formed by said bundle of light incident onto said finder optical system is normal to a plane formed by said beams of incident onto each of said plurality of image pickup devices.
An imaging device, comprising:
- an image pickup device;
- an optical system;
- a finder;
- and
- a optical element that is selectively moved between a first position and a second position, said optical element preventing light transmitted through said optical element from being incident onto said image pickup device when said optical element is in said first position and permitting light transmitted through said optical element to be incident onto said image pickup device when in said second position.
Dependencies are inferred from the claim text.