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| Number | Title | Issue Date |
| 8160437 | Focus detection apparatus A focus detection apparatus comprises a field mask which has a rectangular opening, a first focus detection optical system which divides, in a longitudinal direction of the opening or a shorter side direction of the opening, the light beam, a second focus detection ... | 04/17/2012 |
| 7817912 | Optical system of a focus detection apparatus An optical system of a focus detection apparatus includes a condenser lens positioned behind an expected focal plane of a photographing lens; an auxiliary lens group positioned behind the condenser lens to be coaxial therewith; and a pair of separator lenses positio... | 10/19/2010 |
| 7702230 | Digital camera and exposure condition determining method To provide a digital camera capable of causing a focus sensor to detect a focus while outputting to an image sensor image data for providing appropriate exposure after having adjusted an aperture ratio of an aperture in an image capture optical system such that appr... | 04/20/2010 |
| 7676147 | Focus detection apparatus and optical apparatus A focus detection apparatus capable of accurate focus detection is disclosed. The apparatus includes a first image-forming lens unit including a first pair of lens portions forming a first pair of images on a first pair of light-receiving element arrays with luminou... | 03/09/2010 |
| 7548687 | Focus detecting apparatus and optical device In a camera of the invention, during focus detection, luminous flux from an object is transmitted by a main mirror via an imaging lens, and then, is reflected by a reflection face of a sub-mirror. The reflected luminous flux is reflected by the main mirror, passes t... | 06/16/2009 |
| 7471889 | Focus detection system for focus adjustment having differently-sized apertures and using a pair of signals formed by a pencil of rays passing through different regions of exit pupil of imaging lens A focus detection system including a sensor unit including a plurality of photoelectric conversion elements and a focus detection unit for performing focus adjustment using a pair of signals output from the sensor unit. In the sensor unit, an aperture corresponding ... | 12/30/2008 |
| 7339699 | Image processing apparatus An image processing apparatus includes a first sensor having a plurality of reading elements arranged in the primary scanning direction, a second sensor disposed in parallel with the first sensor and by a predetermined lines in the secondary scanning direction, an i... | 03/04/2008 |
| 7283737 | Focus detecting apparatus Disclosed is a focus detecting apparatus which is capable of enlarging a focus detection region and of enhancing focus detection precision. The focus detecting apparatus includes a secondary image forming optical system for forming a plurality of light, quantity dis... | 10/16/2007 |
| 7265881 | Method and apparatus for measuring assembly and alignment errors in sensor assemblies A target, method, and apparatus are disclosed for measuring assembly and alignment errors in scanner sensor assemblies. The sensor assembly comprises at least two sensor segments. The target comprises edges defined by changes in reflectance. At least one vertical ed... | 09/04/2007 |
| 7209295 | Optical system, and optical apparatus The invention relates to an optical system that has reduced power consumptions, ensures noiseless operations and fast responses, contributes to cost reductions due to simplified mechanical structure, and, albeit having a small outside diameter and small size, is cap... | 04/24/2007 |
| 7209175 | Autofocus apparatus An autofocus apparatus with a photographic optical system having a movably disposed focus adjusting lens, an optical element to split light beams received from an object, a plurality of image forming lenses to form images from portions of the split light beams, a pl... | 04/24/2007 |
| 7164856 | Distance measurement and photometry sensor device In a distance measurement and photometry sensor device in which sensors are arranged on the same plane to be formed in the form of a semiconductor chip, a photometry sensor is arranged such that its sensor center is deviated by a predetermined distance in a directio... | 01/16/2007 |
| 7130127 | Terrestrial telescope with digital camera A terrestrial telescope with digital camera has an imaging optical system having a group of objective lenses and an imaging element disposed at a position at which an optical image is formed by the group of objective lenses. An observation optical system is provided... | 10/31/2006 |
| 7071985 | Optical device and method for selecting object of focus A camera capable of automatically detecting a main object in a sensed image. A distance distribution generation unit discriminates a plurality of areas in the sensed image on the basis of a predetermined condition, and a main object area determination unit automatic... | 07/04/2006 |
| 7050158 | Compact image pickup module An image pickup module made of clear polymer includes an imaging surface, a first mirror, and a second mirror. An object is placed on the imaging surface for imaging. Incident light reflects off the imaging surface. The first of the two mirrors directs the reflected... | 05/23/2006 |
| 7016110 | Microscope suitable for high-throughput screening having an autofocusing apparatus The apparatus for automatically focusing an image in a microscope includes onto an object plane includes an optical system configured to form an optical image of a sample plane to be observed, an autofocusing detection system, and a focus correction system. The auto... | 03/21/2006 |
| 7006140 | Digital still camera with shifting focus lens A digital still camera of the present invention has a photographing optical system, a body, an image sensor, a half mirror, a phase difference focus detector. The image sensor is arranged in the body and backward of the photographing optical system along an optical ... | 02/28/2006 |
| 7002756 | Variable focal length lens, photographing lens unit, camera, and portable information terminal device A negative first group optical system, a positive second group optical system, and a positive third group optical system are sequentially arranged from the object side. A stop moving integrally with the second group optical system is provided on the object side of t... | 02/21/2006 |
| 6974938 | Microscope having a stable autofocusing apparatus The apparatus for automatically focusing an image in a microscope includes onto an object plane includes an optical system configured to form an optical image of a sample plane to be observed, an autofocusing detection system, and a focus correction system. The auto... | 12/13/2005 |
| 6947671 | Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prism An optical link module of the present invention for connecting light beams by deflection and including light-emitting devices arranged in a planar manner; an optical fiber bundle that is an optical waveguide for receiving the light beams from the light-emitting devi... | 09/20/2005 |
| 6933978 | Focus detecting device with photoelectric conversion portion having microlens and with light blocking portion having first and second openings A focus detecting device comprises a first photoelectric conversion section for performing photoelectric conversion of a light beam emitted from a first pupil area of a image pickup optical unit, a second photoelectric conversion section for performing photoelectric... | 08/23/2005 |
| 6847784 | Focus detecting optical system and camera provided with the same A focus detecting optical includes a condenser lens placed in the proximity of a preset imaging plane equivalent to the imaging plane of a photographic lens, a pair of aperture stops dividing the pupil of the photographic lens placed on the exit side of the condense... | 01/25/2005 |
| 6766112 | Focal point detection apparatus and focal point detection module A sub-mirror which deflects a focal point detection light flux passing through an area off the optical axis of a photographing optical system toward the optical axis and a second deflection member that deflects the focal point detection light flux deflected by the s... | 07/20/2004 |
| 6707994 | Device for determining amount of focus adjustment A device for determining an amount of focus adjustment for an image-forming optical system which forms an image on a predetermined image plane includes a sensor, an image-re-forming optical system which re-forms the image on the sensor, and a reference member dispos... | 03/16/2004 |
| 6686577 | Device detecting focus of a taking lens without decrease in focus detection accuracy when the auto focus area is disposed at an inclination relative to the photographic field An optical element disposed behind a main mirror and inclined relative to the optical axis is arranged at a position to correct aberration in the luminous flux generated by transmission through the main mirror.... | 02/03/2004 |
| 6643460 | Camera and focal point detection apparatus A focal point detection apparatus that includes a sub-mirror constituted of a concave mirror and performs focal point detection in the phase difference detection method is capable of implementing a focal point detection over a wide range. A light flux for... | 11/04/2003 |
| 6618560 | Focus detection device A focus detection device is provided with a pupil dividing system, an intensity distribution pattern forming system, a plurality of light receiving elements arranged in a direction where the pupil is divided, a focus detection area defining system having ... | 09/09/2003 |
| 6583433 | Range finder structure allowing easier filling of the transparent filler A range finder includes an improved module structure, that facilitates injecting a transparent filler uniformly into the entire light guide spaces neither leaving any unfilled region nor impairing the characteristics thereof. A channel of flow (or U-groov... | 06/24/2003 |
| 6477327 | Camera having image pick-up device A camera includes a finder for enabling an image which is shot on a film to be monitor-displayed by branching a portion of a light beam (image) imaged by a picture-taking lens system, by an up/down movable pellicle mirror comprised of a half mirror, to le... | 11/05/2002 |
| 6473126 | Focusing information detecting device, focus detecting device and camera utilizing the same A focus detecting device for detecting images from different pupil areas on time-shared basis, and detecting the phase difference of the images from the different areas, thereby detecting the defocus amount, is described. The focus detecting device of thi... | 10/29/2002 |
| 6392820 | Optical system of a composite camera An optical system of a composite camera including a first image-forming optical system, a second image-forming optical system, and a condenser lens group, which includes two or more lens elements, or includes a single lens element on which at least one as... | 05/21/2002 |
| 6393219 | Multipoint focus detecting apparatus A multipoint focus detecting apparatus of a camera includes a plurality of exit-pupil dividing devices, pairs of light distribution forming devices, a plurality of array type photoelectric conversion sensors, a focus detection zone determining device, and... | 05/21/2002 |
| 6370333 | Multipoint focus detecting apparatus A multipoint focus detecting apparatus of a camera includes a plurality of exit-pupil dividing devices for dividing an exit pupil of a photographing lens into a plurality of detection sub-zones which correspond to a plurality of arrays of light receiving ... | 04/09/2002 |
| 6360059 | Focus detector The present invention provides a low-cost focus detector that can carry out a focus detection over a wide field of view and can secure a sufficient light-receiving quantity to have an improved S/N ratio and an improved focus detection precision. A camera ... | 03/19/2002 |
| 6346694 | Focus detecting device and a method for the focus detection A focus detecting device comprising a taking lens for photographing an object, a relay optical system for re-forming an object image via the taking lens, and a detecting means having first and second sensor pairs for detecting the image re-formed by the r... | 02/12/2002 |
| 6281968 | Laser distance-measuring instrument for large measuring ranges Laser distance-measuring instrument for large measuring ranges having a transmitting channel and a receiving channel arranged parallel to one another, the receiving lens being a modified single lens comprising a primary lens region with a primary optical ... | 08/28/2001 |
| 6272291 | Focus detecting device A focus detecting device for detecting a focusing state of an objective lens includes a field lens disposed adjacent to a prescribed image forming plane of the objective lens and having lens surfaces which differ in shape from each other correspondingly w... | 08/07/2001 |
| 6188846 | Optical system for focus detecting device An optical system of a focus detecting device for detecting a focusing condition of a main lens with respect to an image taking plane. The optical system includes a focus detection area arranged on an equivalent image taking plane, a first deflecting elem... | 02/13/2001 |
| 6188845 | Multipoint focus detecting apparatus A multipoint focus detecting apparatus having a plurality of focus detecting zones arranged in a first pattern on a predetermined focal plane, and a corresponding plurality of arrays of light receiving elements which are arranged in a second pattern, wher... | 02/13/2001 |
| 6128444 | Multipoint focus detecting apparatus Disclosed is a multipoint focus detecting apparatus having a plurality of focus detecting zones arranged in a first pattern on a predetermined focal plane around the center thereof, and a corresponding plurality of light receiving elements arranged in a s... | 10/03/2000 |
