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| Number | Title | Issue Date |
| 7399082 | Volumetric imaging using “virtual” lenslets A system constructs an image using virtual lenslets. ... | 07/15/2008 |
| 7232221 | Volumetric imaging using “virtual” lenslets A system constructs an image using virtual lenslets. ... | 06/19/2007 |
| 6970410 | Focus detection in a digital focus servo system A system for determining whether a focus servo system is in focus or out of focus (i.e. open) is disclosed. A sum signal can be compared with a threshold value. If the sum signal is below the threshold value, then a focus open condition (i.e., out-of-focus) can be i... | 11/29/2005 |
| RE38621 | OPTICAL DISK HAVING A PARTICULAR FORMAT TO STORE USER-SELECTED DATA, SUCH AS COMPRESSED VIDEO DATA OR COMPUTED FILES, INCLUDING A DEDICATED TOC REGION AND AN APPLICATION TOC TO IDENTIFY THE VIDEO COMPRESSION FORMAT An optical disk having a diameter less than 140 mm and, a thickness of 1.2 mm±0.1 mm, with a plurality of record tracks having data recorded thereon as embossed pits representing information and exhibiting a track pitch in the range between 0.646 μm and 1.05 μm; ... | 10/12/2004 |
| 6768867 | Auto focusing system In an auto focusing system of the present invention, a light from an object is guided by an optical section to a light receiving section constituted of an imager such as a photoelectric transducer, and the object is imaged as a digital image at the light receiving s... | 07/27/2004 |
| 6714244 | Internal indication of a viewfinder of a camera An internal indicator of a viewfinder of a camera includes a viewfinder optical system which includes a focusing screen on which an object image is formed through a photographic optical system of the camera; at least one optical deflector that is positioned on or in... | 03/30/2004 |
| 5880461 | Low noise optical position sensor A novel optical position sensor is described that uses two component photodiodes electrically connected in parallel, with opposing polarities. A lens provides optical gain and restricts the acceptance angle of the detector. The response of the device to d... | 03/09/1999 |
| 5552594 | Focus detecting system using a beam splitter to form an image at nominal best focus, slightly in front of best focus and slightly behind best focus A focus detecting system for detecting focus state of an image forming optical system relative to an object, includes a beam splitter assembly for forming at least three coplanar two-dimensional images of a scene, each image having a different focus setti... | 09/03/1996 |
| 5084723 | Focus detecting device The focus detecting device comprises a primary imaging optical system, a focus detecting optical system, an aperture stop, deflection prisms and a photoelectrc transducing member which are arranged on an optical axis in the order from the object side. Thi... | 01/28/1992 |
| 4745426 | Light measuring device for a camera A light measuring apparatus for an exposure control for a camera including a photoelectric converter which photoelectrically converts a portion of a light beam impinging on a photoelectric conversion portion of a focus detection device, through a taking l... | 05/17/1988 |
| 4697905 | Photographic apparatus A photographic apparatus in which light entering through an objective is used in photo-electrically detecting the state of focus of a range finder area in the view field, whereby a mask for defining that area is arranged in the effective light beam at or ... | 10/06/1987 |
| 4688920 | Focus state detecting system A system for detecting the focus of an imaging lens relative to an object includes re-imaging means disposed on the imaging side of the imaging lens and having pupil dividing means for dividing the pupil of the imaging lens into a plurality of areas, the ... | 08/25/1987 |
| 4634255 | Focus detection apparatus A focus detection apparatus has a field lens on or in a vicinity of an anticipated focal plane of an imaging lens and a refocusing optical system arranged behind the field lens to focus light beams transmitted through different areas in a pupil of the ima... | 01/06/1987 |
| 4632532 | Focus detecting apparatus In a focus detecting apparatus for detecting the focus state of an objective lens on the basis of a light passing through the objective lens, a field lens is disposed near the predetermined imaging plane of the objective lens, and a projecting optical sys... | 12/30/1986 |
| 4408853 | Focus detecting device A focus detecting device comprising split prisms between an optical lens and an object image formed on the focal plane of the lens. The image is divided into two images and a plurality of light receiving elements or two arrays are disposed on the image fo... | 10/11/1983 |
| 4389107 | Focusing device for cameras An arrangement for the automatic critical focusing of optical systems in mirror reflex cameras provided with a partially transmitting reflex mirror, an image field lens arranged in the viewfinder ray path as well as a range-finder image plane, which is eq... | 06/21/1983 |
| 4367463 | Information mark display device An information mark display device with the mark representative of information to be displayed being formed in at least one of the surfaces of a flat transparent substrate in a portion thereof and arranged upon illumination by light from a lamp to present... | 01/04/1983 |
| 4265520 | Focus detecting device in single lens reflex camera A focus detecting device in a single lens reflex camera having a lens system and an optical image splitter for splitting an object image into various partial images disposed at a position optically equivalent to that of a film surface in said single lens ... | 05/05/1981 |
| 4230401 | Camera focus detecting device A focus detecting device in a camera having an optical member or an optical system for obtaining two images from an object and an optical member for displacing said two images in opposite directions or displacing one of said two images. Two minute photoel... | 10/28/1980 |
| 4223988 | Camera having a focusing device A single lens reflex camera including an objective having an optical axis for focusing an image of an object and a device for determining when the objective has properly focused an image at an image plane which is located at a position which is optically ... | 09/23/1980 |
| 4180309 | Focal point detecting device for SLR camera A pair of wedge prisms 11, 11' are disposed at an optical position equivalent to that of the film 10 in an SLR camera, and light from the object is directed thereon by a mirror 4 or the like. The prisms split the object image into two halves which are pro... | 12/25/1979 |
| 4171155 | Method and apparatus for focusing a photographic apparatus The photographic apparatus has an objective and device for determining when the objective has focused an image in a predetermined plane. This device has an optical system having along its optical axis an image plane normal to the optical axis in which a g... | 10/16/1979 |
| 4147417 | Optical sensing system for focusing a reflex camera Disclosed is an optical sensing system for use in focusing the objective of a reflex camera in which light from the exit pupil of the camera objective is projected onto a pair of spaced sensors such that each sensor receives light from a different portion... | 04/03/1979 |
| 4126870 | Automatic focusing device A beam splitter is provided in the optical path of an objective of a camera or the like to divide the light beam into two light beams. At least in one of the divided light beams is inserted a wedge type prism to shift the image viewed from therebehind whe... | 11/21/1978 |
| 4104652 | Single lens reflex camera A single lens reflex camera having a sharp focus detecting arrangement with one or more photoelectric cell or cells of an outer zone of a light beam entering through a photo-taking lens wholly or in parts and responsive to transition of light distribution... | 08/01/1978 |
| 4083056 | Focus detecting device for single-lens reflex cameras In a single lens reflex camera a focus detecting device is provided to identify or control the in-focus condition of a lens. The detecting device operates on the same principle as that used in visual focusing, namely the bringing together of a split image... | 04/04/1978 |
| 3953863 | Method and apparatus for focusing an objective In a method for focusing a reproducing objective, such as may be used for measuring distances, wherein multiplication of the image of the entrance pupil is achieved by image-splitting optical elements mounted in the plane of the object image, the improvem... | 04/27/1976 |
