Optical apparatus capable of performing a panoramic photographing
AssigneeNikon Corporation
InventorKoichi Ohshita
Life of this patent
Estimating the term…
Abstract
An optical apparatus capable of a panoramic photographing includes a photographing lens, an auxiliary lens having positive refraction to convert its focal length synthesized with the photographing lens to a focal length shorter than the individual focal length of the photographing lens without changing the positions of an image formation, and an auxiliary lens supporting means which removably supports the auxiliary lens in the optical path between the photographing lens and the image-formation plane, and is constructed to perform easily a usual photographing individually with the photographing lens as well as a panoramic photographing with the installation of the auxiliary lens.
Claims26
An optical apparatus capable of performing a panoramic photographing, including the following:
- a photographing lens for forming an image on an image plane;
- an auxiliary lens having positive refractive power for converting its focal length synthesized with said photographing lens to be a focal length shorter than the individual focal length of the photographing lens;
- and
- an auxiliary lens supporting means for supporting said auxiliary lens in such a manner that the auxiliary lens is installed in or removed from the optical path between said photographing lens and said image plane.
A panoramic photographing attachment to a camera having a photographing lens and a film aperture, including the following:
- shading members for narrowing the longitudinal direction of said film aperture;
- an auxiliary lens having positive refractive power for converting its focal length synthesized with said photographing lens to be a focal length shorter than the individual focal length of the photographing lens without shifting the image formation position;
- and
- an auxiliary lens supporting means holding said auxiliary lens at one end and having said shading members at the other end so that said shading members can be held near said film aperture while said auxiliary lens is being held at a predetermined position on the optical path between said photographing lens and said film aperture.
An optical apparatus capable of performing a panoramic photographing, including the following:
- a photographing lens for forming an image on an image plane;
- an auxiliary lens having positive refractive power for converting its focal length synthesized with said photographing lens to be a focal length shorter than the individual focal length of the photographing lens;
- and
- an auxiliary lens supporting means for supporting said auxiliary lens between said photographing lens and said image plane.
Dependencies are inferred from the claim text.