Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7389040 | Lens barrel A lens barrel includes a radially-retractable optical element constituting a part of photographing optical system, and is movable between a photographing position and a radially-retracted position; a biasing device for biasing the radially-retractable optical elemen... | 06/17/2008 |
| 6507708 | Camera-type image input apparatus A camera-type image input apparatus comprises a light-receiving element disposed in a light-receiving area for receiving light from an object through a lens, and light-emitting elements disposed in the light-receiving area to irradiate the object through ... | 01/14/2003 |
| 6366323 | Digital camera with moveable image pickup device A digital camera which includes: a photographic lens movable along an optical axis thereof between a retracted position and a photographing position in front of the retracted position; an image pick-up device on which an object image is formed through the... | 04/02/2002 |
| 6031998 | Digital camera A digital still camera having an image pickup device which picks up an image formed by a photographing lens includes a photographing lens provided with at least two lens groups of which the rearmost lens group does not move in the optical axis direction a... | 02/29/2000 |
| 5950018 | Panoramic camera A panoramic camera has a camera housing rotatable about an axis of rotation that defines a viewpoint which points along a radial optical path that object rays traverse as the camera is rotated about its axis; a lens assembly having an optical path and a f... | 09/07/1999 |
| 5907727 | Device for exposure metering A device for exposure metering in photographic cameras including a reflector located in the imaging beam path. The surface of the reflector is provided with a reflecting structure whose size corresponds at least approximately to that of the image recordin... | 05/25/1999 |
| 5895132 | Exposure precision tester and exposure precision testing method for camera In an exposure precision tester for a camera, including a flexible wiring board where a photometric sensor is implemented is contained in a case. The case has an appearance similar to that of a film cartridge loaded by drop-in operation and is insertable ... | 04/20/1999 |
| 5668919 | Camera A camera includes a photometric optical system and a range measuring optical system which are provided independently of a photographing optical system so that the optical path of the photometric optical system and that of a projection or reception system ... | 09/16/1997 |
| 5319415 | Interchangeable lens and camera system incorporating the same lens A focal detector built-in interchangeable lens is disclosed. During photographing, a release signal is transmitted via a transmitting means to a control part provided in the interchangeable lens from a control part provided in a camera body. Based on this... | 06/07/1994 |
| 4618239 | Photographic apparatus and measurement method of exposure conditions A photographic apparatus comprises a photoelectric camera arranged movably at the position of the lens of the photographic apparatus and a picture signal processing circuit connected electrically with the photoelectric camera and adapted to process pictur... | 10/21/1986 |
| 4451129 | Camera having a plurality of built-in lenses A camera having two built-in lenses with selective control of the focal length, wherein a first focal length is obtained by the first lens optical system and, after the first lens optical system has been moved along a lens axis without causing movement of... | 05/29/1984 |
| 4357085 | Focus detection device A so-called active-type focus detection device applicable to optical instruments such as camera is provided with light emitting means and photoelectric detector means disposed at two positions conjugate with the pre-arranged focal plane of an image-formin... | 11/02/1982 |
| 4314746 | Rear wall construction of a photographic cassette camera In a photographic cassette camera having a cassette guide frame and an attachable ground-glass frame supporting a ground-glass for observation of a subject to be photographed, one of the grames defining an image field of the camera, a rear wall constructi... | 02/09/1982 |
| 4175843 | Duel focal plane photocells A camera having a pair of spaced lenses for sequentially exposing successive adjacent portions of the same light sensitive surface of a film unit. A pair of opaque doors, each having a photocell thereon, are pivotally mounted in overlying relation to the ... | 11/27/1979 |
| 4174159 | Exposure meter for photomicrography Photomicrographic exposure meter for cameras attached to microscopes in which part of the picture-taking beam is reflected by means of a beam-splitter and where the reflected beam part projects an image of the object onto an image plane, measuring field s... | 11/13/1979 |
| 4118714 | Light metering system for a photographic camera A light metering system for a photographic camera which may be selectively operated in a through-the-lens (TTL) light metering mode or an outside-the-lens (OTL) light metering mode to improve the exposure control accuracy over an extended range of light l... | 10/03/1978 |
| 4005441 | Photometric device of through the lens type exposure meter in a single-lens reflex camera A photometric device for a through the lens type exposure meter in a single lens reflex camera. The reflecting mirror provides a region transmitting a part of the light rays incident thereon. The light passing through said region is reflected by a reflect... | 01/25/1977 |
