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| Number | Title | Issue Date |
| 5055868 | Variable magnification finder of real image type A finder device is disclosed comprising a first lens group having a positive refractive power to form a first image, a second lens group having a positive refractive power to re-form the first image, and an eyepiece lens group having a positive refractive... | 10/08/1991 |
| 5052787 | Zoom finder A zoom finder can be provided which ensures high magnification and satisfactory view-finding without the need to increase the size. A positive lens which is movable along the optical axis is provided closest to the object side. A negative lens which is mo... | 10/01/1991 |
| 5036346 | Zooming apparatus for a viewfinder optical system A camera having zoom lenses of a photographing optical system, zoom lenses of a viewfinder optical system, and a driving motor for driving both zoom lenses. A transmitting mechanism for transmitting the force of the driving motor to the zoom lenses of the... | 07/30/1991 |
| 5014078 | Pseudo focal length camera A pseudo focal length camera which takes a photograph using an optical system of a single focal length. A printed photograph has a feature similar to that obtained by taking a photograph using an optical system comprising a plurality of photographing lens... | 05/07/1991 |
| 5005955 | Keplerian zoom finder optical system A Keplerian zoom finder optical system having a zoom power variable objective lens, the Keplerian zoom finder optical system comprising: a zoom objective lens including a first lens group having a negative refracting power and a second lens group includin... | 04/09/1991 |
| 4992809 | Zoom finder system A finder apparatus for use with a lens-shutter type camera composing a zoom imaging optical system, a zoom finder optical system separate from said zoom imaging optical system, and an electronic flash device. The zoom finder optical system is made as a re... | 02/12/1991 |
| 4955715 | Psuedo format camera A single-lens reflex camera capable of switching of the optical path of a light beam from an objective lens between one leading to a photographing surface and one leading to viewfinder is disclosed, in which an auxiliary lens for contracting an image on o... | 09/11/1990 |
| 4951074 | Camera having zoom strobe device A camera comprising a zoom lens having a variable power lens group for varying the focal length, a zoom strobe device having an illumination angle varying member, a zoom motor for driving the variable power lens group, and an illumination angle varying me... | 08/21/1990 |
| 4949107 | Camera having telescopic capability A camera having a photographic lens and an eyepiece lens for observing an image formed by the photographic lens, wherein when this camera is used as a telescope, the interval between the image and the eyepiece lens is shortened, while simultaneously chang... | 08/14/1990 |
| 4945372 | Camera A camera includes a photographic optical system movable along its optical axis, and a cam ring rotatable about the optical axis of the optical system. When it is rotated by a motor, the cam ring moves the optical system to change the focal length thereof.... | 07/31/1990 |
| 4941012 | Finder optical system for cameras A finder optical system for cameras comprises a Porro prism, a mirror assembly, or a compound assembly of a mirror and a prism which includes four reflecting surfaces for erecting an image formed through an imaging optical system and which can take out li... | 07/10/1990 |
| 4887109 | Viewfinder for a camera with changeable focal length A camera having a viewfinder and a taking lens changeable in focal length between at least two different focal lengths: a relatively short focal length suitable for wide-angle photography and a relatively long focal length suitable for telephotography and... | 12/12/1989 |
| 4854680 | Zoom view finder A zoom view finder comprising a plural number of lens units and so adapted as to perform zooming by displacing some of said lens units, said zoom view finder satisfying the following conditions: ##EQU1## wherein the reference symbol z represents zoom... | 08/08/1989 |
| 4855782 | Display device for indicating the setting of a zoom lens A display device in a camera with a zoom lens, for providing a visual indication of the setting of the zoom lens. It includes a zoom encoder (10) for detecting the zoom lens setting, a liquid crystal display (8) having a plurality of display segments (S1-... | 08/08/1989 |
| 4838668 | Zoom lens A zoom taking lens for a photographic single lens reflex (SLR) camera. The lens has an air space between elements of the lens, which air space is large enough to accommodate reflective means for directing rays which have passed through elements of the len... | 06/13/1989 |
| 4834513 | Albada type zoom finder A zoom finder with an Albada System comprising, beginning on the object side, a first lens component having positive refractive power, a second lens component having negative refractive power, a third lens component having negative refractive power and pr... | 05/30/1989 |
| 4832470 | Inverted galilean telescope type viewfinder system capable of changing over the magnification A viewfinder system capable of changing over the magnification includes an objective lens unit having at least two negative lens elements replaceable with each other for magnification change-over, and an eyepiece unit having a positive refractive power an... | 05/23/1989 |
| 4751539 | Variable power finder A variable power finder having an objective lens of positive refracting power comprising a first lens unit of positive refracting power movable along an optical axis and a second lens unit releasably attached to the first lens unit in axial alignment, whe... | 06/14/1988 |
| 4195924 | Camera with zoom lens A still or cinematographic camera has a zoom lens movable between two focal-length settings. An eyelevel viewfinder is provided. Also provided is an actuating arrangement which is coupled with both the zoom lens and with components of the viewfinder so as... | 04/01/1980 |
