And Focal Length Responsive Memory Patents (Class 396/81)
  • Patent number: 11255975
    Abstract: Systems, methods, and non-transitory computer-readable media are provided for implementing a tracking camera system onboard an autonomous vehicle. Coordinate data of an object can be received. The tracking camera system actuates, based on the coordinate data, to a position such that the object is in view of the tracking camera system. Vehicle operation data of the autonomous vehicle can be received. The position of the tracking camera system can be adjusted, based on the vehicle operation data, such that the object remains in view of the tracking camera system while the autonomous vehicle is in motion. A focus of the tracking camera system can be adjusted to bring the object in focus. The tracking camera system captures image data corresponding to the object.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: February 22, 2022
    Assignee: Pony AI Inc.
    Inventors: Kai Chen, Tiancheng Lou, Jun Peng, Xiang Yu, Zhuo Zhang, Yiming Liu, Hao Song
  • Patent number: 11223774
    Abstract: A lens apparatus having a focus lens can be detachably attached to an imaging apparatus. A sensor of the imaging apparatus photoelectrically converts an optical image formed via the lens apparatus. A generation unit generates an image based on an image signal output from the imaging apparatus. The imaging apparatus receives information about a focal length variation from the lens apparatus received by a lens communication control unit configured to control communication with the lens apparatus, and an image magnification variation correction control unit corrects the magnification of the image based on the information.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: January 11, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Sugita, Takeshi Ogawa
  • Patent number: 10795115
    Abstract: A shooting apparatus comprising: a focusing lens provided within a lens barrel including a shooting lens, the focusing lens being movable in an optical axis direction; a ring disposed so as to be rotatable with respect to the lens barrel; a rotation detector configured to detect a rotation amount and rotation direction of the ring; a controller configured to calculate, based on the rotation amount detected by the rotation detector, a moving speed of the focusing lens to control a movement of the focusing lens at the calculated moving speed in a predetermined cycle period and in accordance with the rotation direction.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: October 6, 2020
    Assignee: Olympus Corporation
    Inventors: Satoshi Okawa, Takeshi Kindaichi, Naoaki Tani
  • Patent number: 10719928
    Abstract: A pattern inspection apparatus includes a transmitted illumination optical system to illuminate change the shape of a first inspection light, a reflected illumination optical system to illuminate a mask substrate with a second inspection light by using an objective lens and a polarizing element, and let a reflected light from the mask substrate pass therethrough, a drive mechanism to enable the polarizing element to be moved from/to outside/inside an optical path, a sensor to receive a transmitted light from the mask substrate illuminated with the first inspection light during stage moving, and an aperture stop, between the mask substrate and the sensor, to adjust a light flux diameter of the transmitted light so that the transmitted light reaching the sensor can be switched between high and low numerical aperture (NA) states with which the transmitted light from the mask substrate can enter the objective lens.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: July 21, 2020
    Assignee: NuFlare Technology, Inc.
    Inventors: Toshiaki Otaki, Riki Ogawa
  • Patent number: 10356329
    Abstract: The invention relates to a method for correcting the zoom setting and/or the vertical offset in an image assembled from two sub-frames of a stereo film, wherein the one sub-frame is provided by a first camera of a camera rig and the second sub-frame is provided by a second camera of the camera rig, wherein a vertical offset is changed via a change in the pitch setting, wherein, during the operation when recording the stereo film, a difference between the present zoom-results in the first sub-frame relative to the second sub-frame is measured and/or a vertical offset of the image points present in the first sub-frame in relation to those corresponding image points in the second sub-frame is measured and, on the basis of this information, correction values are calculated, with which the zoom difference and/or the vertical offset is reduced, given appropriate application to the zoom and/or pitch setting.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: July 16, 2019
    Inventors: Christian Wieland, Matthias Lenz
  • Patent number: 10298845
    Abstract: An image-capture system is provided. The image-capture system includes a lens, a motor, a first sensing unit, and a control unit. The lens has an effective focal length. The motor carries the lens and adjusts a position of the lens according to a driving signal. The first sensing unit senses a shaking amount of the image-capture system and generates a first sensing signal. The control unit provides the driving signal according to predetermined information and the first sensing signal.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 21, 2019
    Assignee: TDK TAIWAN CORP.
    Inventor: Chao-Chang Hu
  • Patent number: 10073202
    Abstract: A near-infrared cut filter has an optical multilayer provided on at least one main surface of a transparent substrate, in which the optical multilayer is formed of a high-refractive index layer having a refractive index of 2.0 or more, and a low-refractive index layer having a refractive index of 1.6 or less at a wavelength of 500 nm, and the optical multilayer has a repeating structure of (anQH, bnQL, cnQH, dnQL)^n when a QWOT at the wavelength of 500 nm of the high-refractive index layer is set to QH, and a QWOT at the wavelength of 500 nm of the low-refractive index layer is set to QL, in which an average value of the an is not less than 1.5 nor more than 2.5, and a value obtained by averaging average values of the respective bn, cn, and dn is 1.0 or less.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: September 11, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventor: Mitsuyuki Tatemura
  • Patent number: 9979893
    Abstract: An imaging apparatus is capable of preventing unintended shooting setting when a through-image is displayed at a zoom position different from a field angle for reach shooting. The imaging apparatus includes a recording control unit configured to record a zoom position taken before a start of a function for temporarily changing the zoom position as a first position, a zoom control unit configured to perform control to move the zoom position from the first position to a second position when the function is started, and from the second position to the first position when the function is ended, and a control unit configured to perform control, when the zoom position is at the second position by the function, not to make any changes according to an instruction for changing specific shooting setting.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 22, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuya Hada
  • Patent number: 9638916
    Abstract: An image processing device includes a signal processing circuit, a chromatic aberration extraction circuit, and a diaphragm control circuit. The signal processing circuit generates image data by signal-processing output data generated by an image sensor in accordance with light passing through a diaphragm and a lens. The chromatic aberration extraction circuit extracts a chromatic aberration from the image data. The diaphragm control circuit changes an f-number of the diaphragm. The diaphragm control circuit sets the f-number of the diaphragm based on the chromatic aberration extracted by the chromatic aberration extraction circuit.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: May 2, 2017
    Assignee: SOCIONEXT INC.
    Inventor: Hirotaka Okudera
  • Patent number: 9386219
    Abstract: An imaging apparatus is capable of preventing unintended shooting setting when a through-image is displayed at a zoom position different from a field angle for reach shooting. The imaging apparatus includes a recording control unit configured to record a zoom position taken before a start of a function for temporarily changing the zoom position as a first position, a zoom control unit configured to perform control to move the zoom position from the first position to a second position when the function is started, and from the second position to the first position when the function is ended, and a control unit configured to perform control, when the zoom position is at the second position by the function, not to make any changes according to an instruction for changing specific shooting setting.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: July 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuya Hada
  • Patent number: 9357120
    Abstract: It is provided an image capturing apparatus including a control unit that determines whether to set a division number to a first division number n or to a second division number m which is larger than n based on a setting status of an image capturing apparatus, calculating a divided area evaluation curve by calculating a correlation between first detection information and second detection information for each of divided areas formed by dividing a phase difference detection area into the n or the m, and acquires a defocus amount to drive and control a focus lens to the in-focus position from a total evaluation curve obtained by conducting a required calculation processing on the divided area evaluation curves of the plural divided areas.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: May 31, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Aoki
  • Patent number: 9235023
    Abstract: Various techniques are disclosed for providing systems and methods for orienting one or more lenses or other optical elements in a lens sleeve. For example, a system may include a lens sleeve defining an interior lens cavity. A plurality of lens positioning features extend from the lens sleeve adjacent the interior lens cavity. A first lens is secured in the lens cavity at a first position relative to the lens sleeve. A first set of the lens positioning features are located at a second position relative to the lens sleeve, and a second set of the lens positioning features are located at a third position relative to the lens sleeve. A second lens engages either the first set or the second set of the plurality of lens positioning features depending on a desired distance between the first lens and the second lens.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 12, 2016
    Assignee: FLIR Systems, Inc.
    Inventors: Warn Burt, Theodore R. Hoelter, Kevin Birch
  • Patent number: 9176296
    Abstract: A lens system for a camera, includes: an image formation optical system including a movable lens group and a correction lens group; a drive section driving the correction lens group; a lens position acquisition section acquiring a lens position of the movable lens group; a specification section specifying a partial image of a part of region in an image; a storage section storing a data table; and a control section, in accordance with the lens position of the movable lens group acquired by the lens position acquisition section, on the basis of the data table, acquiring a position for the correction lens group that improves optical performance of the partial image specified by the specification section and then controlling the drive section such as to move the correction lens group to the acquired position.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 3, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Tadashi Sasaki, Atsushi Misawa
  • Patent number: 9094611
    Abstract: A system for improved camera focusing systems using subject location tags. More particularly, the disclosed subject matter relates to providing a system comprising camera accessories and in-lens technologies that allows for the continuous, automated focus of a subject by measuring the distance between the camera and a subject that has been “tagged” with a locator beacon.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: July 28, 2015
    Assignee: Free Focus Systems LLC
    Inventors: Douglas R Kennedy, Stephen A Kennedy, Phillip B Kennedy
  • Patent number: 9077842
    Abstract: An image pickup apparatus includes a lens apparatus attached to a camera apparatus detachably, and a camera apparatus separating a beam into color beams of three colors and displays an image synthesizing first, second and third image signals, wherein the lens apparatus includes a memory unit storing correcting data in an image height direction of the second and third image signals on the first image signal for correcting aberration of the image taking optical system, and a lens controlling unit extracting the correcting data of the image taking optical system state, wherein the camera apparatus includes a camera controller moving the second and third image signals in the image height direction, and displaying an image obtained by superimposing the color image signals, wherein the image pickup apparatus includes a controller, and wherein the lens controlling unit adjusts the correcting data, and the memory unit stores the adjusted correcting data.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: July 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Natsume
  • Patent number: 9025946
    Abstract: A camera system according to the present invention, comprising: an interchangeable lens comprising: a zoom position detecting section configured to detect a zoom position corresponding to a focal length of the photographing optical system; and a lens control section configured to input the zoom position and transmit it to the camera body, and a camera body comprising: a body control section configured to communicate with the lens control section, a focus detecting section configured to detect an in-focus position of a focus lens included in the photographing optical system, and a zoom position memory section configured to memorize the zoom position which is transmitted from the lens control section and received by the body control section, wherein when transmitting the in-focus position to the lens control section, the body control section transmits the memory zoom position memorized in the zoom position memory section to the lens control section.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: May 5, 2015
    Assignee: Olympus Corporation
    Inventor: Tetsuo Kikuchi
  • Patent number: 8989568
    Abstract: An interchangeable lens detachable from a camera includes a variator lens configured to change a focal length by moving in an optical axis direction, a focus lens configured to change a focusing state of an object image by moving in the optical axis direction, a diaphragm configured to adjust an amount of light, an acquisition unit configured to acquire an amount of change in image magnification corresponding to information about a position of the variator lens, a position of the focus lens, and an aperture value of the diaphragm, and a lens control unit configured to transmit the amount of change in image magnification to the camera.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: March 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Ohara, Minoru Uchiyama
  • Publication number: 20140341553
    Abstract: A camera system according to the present invention, comprising: an interchangeable lens comprising: a zoom position detecting section configured to detect a zoom position corresponding to a focal length of the photographing optical system; and a lens control section configured to input the zoom position and transmit it to the camera body, and a camera body comprising: a body control section configured to communicate with the lens control section, a focus detecting section configured to detect an in-focus position of a focus lens included in the photographing optical system, and a zoom position memory section configured to memorize the zoom position which is transmitted from the lens control section and received by the body control section, wherein when transmitting the in-focus position to the lens control section, the body control section transmits the memory zoom position memorized in the zoom position memory section to the lens control section.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 20, 2014
    Applicant: Olympus Corporation
    Inventor: Tetsuo KIKUCHI
  • Patent number: 8891951
    Abstract: A lens barrel includes a moving lens unit that moves in accordance with a zooming operation, a focus lens that moves to correct an image plane variation caused by a movement of the moving lens unit, a driver that moves the focus lens, a controller that controls the driver, a zoom state detector that detects a zoom state, a focus lens detector that detects a position of the focus lens, a storage portion that stores tracking data indicating the position of the focus lens to correct the image plane variation, and a data correction portion that measures a real position of the focus lens in an in-focus state in a plurality of zoom states for each zooming operation in directions from wide angle to telephoto sides and from the telephoto to wide angle sides to generate correction data and correct the tracking data based on the correction data.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuki Nagao
  • Patent number: 8781313
    Abstract: A lens apparatus detachable from an image pickup apparatus includes a focus lens, a driver configured to drive the focus lens, a first position detector configured to detect a position of the focus lens, and a controller configured to correct the position of the focus lens detected by the first position detector to a position of the focus lens in a predetermined optical characteristic, to transmit a corrected position of the focus lens to the image pickup apparatus, to correct driving information of the focus lens in the predetermined characteristic received from the image pickup apparatus to driving information of the focus lens in a current optical characteristic, and to instruct the driver to drive the focus lens in accordance with the position of the focus lens detected by the first position detector and corrected driving information of the focus lens.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Minoru Uchiyama
  • Patent number: 8761592
    Abstract: An interchangeable lens detachable from a camera includes a variator lens configured to change a focal length by moving in an optical axis direction, a focus lens configured to change a focusing state of an object image by moving in the optical axis direction, a diaphragm configured to adjust an amount of light, an acquisition unit configured to acquire an amount of change in image magnification corresponding to information about a position of the variator lens, a position of the focus lens, and an aperture value of the diaphragm, and a lens control unit configured to transmit the amount of change in image magnification to the camera.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: June 24, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Ohara, Minoru Uchiyama
  • Patent number: 8680451
    Abstract: A light receiving device that receives light having passed through an image forming optical system and outputs a light reception signal includes: a light receiving element array formed by arraying a plurality of light receiving elements; a micro-lens array disposed between the image forming optical system and the light receiving element array, which includes a plurality of micro-lenses arrayed in correspondence to the plurality of light receiving elements; and a storage unit that stores position-related information pertaining to a relative positional relationship assumed by the micro-lens array and the light receiving element array with respect to a plane perpendicular to optical axes of the micro-lenses.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: March 25, 2014
    Assignee: Nikon Corporation
    Inventor: Toru Iwane
  • Patent number: 8605204
    Abstract: The method includes a first adjusting step of adjusting a first tracking curve which has been set so as to keep an in-focus state between a position of a magnification-varying lens and a position of an image sensor, and a second adjusting step of adjusting a second tracking curve which has been set so as to keep the in-focus state between the position of the magnification-varying lens and a position of the focus lens for an object distance. The magnification-varying lens is moved in an optical axis direction during a variation of magnification. The image sensor generates an image signal by photoelectrically converting an optical image formed by an image-pickup optical system. The image-pickup optical system including the magnification-varying lens and a focus lens moved in the optical axis direction during focusing.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: December 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomoaki Yamanaka
  • Publication number: 20130308931
    Abstract: An interchangeable lens detachable from a camera includes a variator lens configured to change a focal length by moving in an optical axis direction, a focus lens configured to change a focusing state of an object image by moving in the optical axis direction, a diaphragm configured to adjust an amount of light, an acquisition unit configured to acquire an amount of change in image magnification corresponding to information about a position of the variator lens, a position of the focus lens, and an aperture value of the diaphragm, and a lens control unit configured to transmit the amount of change in image magnification to the camera.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 21, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toru Ohara, Minoru Uchiyama
  • Patent number: 8582964
    Abstract: An imaging device moves a zoom lens, so as to change the magnification of an image of a subject, and obtains a near limit position of a focusing lens to the subject at a zoom lens position. When a target position of the focusing lens, which is required to keep the image in focus after the zoom lens is moved, is located on a near side, i.e., on an imaging plane side, of a threshold position determined based on the obtained near limit position, focus control is performed to move the focusing lens and thereby focus. When the target position of the focusing lens is not located on the near side but is located on a subject side of the threshold position, on the other hand, focus control is performed to move the zoom lens to a wider position and subsequently move the focusing lens to focus the image.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: November 12, 2013
    Assignee: Elmo Company, Limited
    Inventors: Masaaki Toguchi, Tetsuya Horike
  • Publication number: 20130064534
    Abstract: An optical apparatus includes a zoom optical system including a focus lens unit, an operation portion configured to manually and mechanically change a focal length of the zoom optical system, and a controller configured to control the focus lens unit so as to move along a track depending on an object distance in an operation of the operation portion. The controller moves the focus lens unit to a second position that is different from a first position that is a position of the focus lens unit in disconnecting a power when a first focal length that is a focal length of the zoom optical system in disconnecting the power is different from a second focal length that is a focal length of the zoom optical system in reconnecting the power.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 14, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Koyama, Yuki Nagao, Kunihiko Sasaki, Shota Shimada, Shigehiro Torii, Masayasu Mizushima, Daisuke Ochi, Hirokazu Shukuin
  • Patent number: 8229292
    Abstract: An auto focus (AF) adjusting apparatus and a camera system of a lens replaceable camera are disclosed. AF is performed by correcting a location error of a focus lens due to a difference between a frequency band for performing AF detection and a frequency band for determining an improved location of an image surface of an imaging lens, and/or a target region for detecting a focal point.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Masataka Hamada, Kazuhiko Sugimoto, Toshihiro Hamamura, Shuji Yoneyama
  • Patent number: 8126322
    Abstract: An interchangeable lens has a zoom lens, a zoom driver operable to drive the zoom lens along an optical axis, a focus lens, a focus driver operable to drive the focus lens along the optical axis, and a storage unit operable to store link information which links position information indicating a position of the zoom lens on the optical axis with information about a variation in magnification caused by the focus lens advancing and retreating on the optical axis with the zoom lens located at the position indicated by the position information.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: February 28, 2012
    Assignee: Panasonic Corporation
    Inventors: Mitsuyoshi Okamoto, Koji Shibuno, Akihiro Okamoto, Takashi Abe
  • Patent number: 8027581
    Abstract: An imaging apparatus includes: a control unit configured to detect a focus position by moving a focusing lens before and after a preset position which is a focusing lens position set by a focus preset function, with the control unit setting a scan range which is a movement range of the focusing lens to a different range according to a setting state of a zoom lens, obtaining an AF evaluation value along with movement of the focusing lens within the set scan range, and determining a focus position based on the obtained AF evaluation value.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: September 27, 2011
    Assignee: Sony Corporation
    Inventors: Tetsuo Mise, Hiroyuki Nemoto
  • Patent number: 8026973
    Abstract: An imaging apparatus comprises a focusing unit configured to focus an object to be shot by an imaging unit, a first shooting control unit configured to control the imaging unit in order to continuously shooting at first time intervals upon detecting a shooting instruction, a determining unit configured to determine whether the object moves in a distance direction during a control operation of the first shooting control unit, and a second shooting control unit configured to control the imaging unit in order to continuously shoot at second time intervals and to control the focusing unit in order to focus the object when the determining unit determines that the object moves in the distance direction.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: September 27, 2011
    Assignee: Casio Computer Co., Ltd.
    Inventor: Takashi Onoda
  • Patent number: 7995131
    Abstract: An imaging device includes a capturing module with at least one lens for capturing an image from a scene, a driving module for driving the at least one lens to different focusing positions using different driving steps, a flat-scene judging module, and a step-judging module. The flat-scene judging module divides the image into a central area and a plurality of peripheral areas, and determines whether the captured scene is a flat scene according to the divided image. The step-judging module determines whether the driving steps corresponding to a maximum focusing value of the central area of the image are same as driving steps corresponding to respective maximum focusing values of the peripheral areas of image, and changes the driving steps corresponding to the maximum focusing value of the central area to the driving steps corresponding to the greatest one of the maximum focusing values of the peripheral areas.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: August 9, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chun-Nan Yeh
  • Patent number: 7925148
    Abstract: This document relates to an apparatus and method for controlling a camera according to temperature. The apparatus according to an embodiment of this document may comprise a camera comprising lenses comprising a focus lens, an iris, a lens barrel, a motor drive for controlling positions of the lenses and the iris, and a CCD, a temperature sensor for measuring a temperature of the camera, memory for storing information about a relationship between temperatures and positions of the lenses, and a state of the camera, and a controller for controlling the camera to capture an image, measuring temperature variation between a current state and a previous state through the temperature sensor, calculating a position where the focus lens has been moved according to the temperature variation based on the relationship information of the temperatures and the positions of the lenses, and determining whether to compensate for the moved position.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: April 12, 2011
    Assignee: LG Electronics Inc.
    Inventors: Hoseok Choi, Gihoon Lee, Jinsoo Park, Mansung Kim
  • Patent number: 7880802
    Abstract: In response to the user's short press of one preset button, a video camera according to one aspect of the invention reads out preset values stored in an EEPROM and adjusts the pan position, the tilt position, the position of a zoom lens, the position of a focus lens based on the read-out preset values. A movable range of the focus lens is restricted to a specific limited range between a closer direction end and a background position as a previously focused position. Hill-climbing control is then performed in this restricted movable range. This arrangement effectively ensures quick adjustment of the focus position of the video camera.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: February 1, 2011
    Assignee: Elmo Company, Limited
    Inventor: Masaaki Toguchi
  • Publication number: 20100232775
    Abstract: An interchangeable lens has a zoom lens, a zoom driver operable to drive the zoom lens along an optical axis, a focus lens, a focus driver operable to drive the focus lens along the optical axis, and a storage unit operable to store link information which links position information indicating a position of the zoom lens on the optical axis with information about a variation in magnification caused by the focus lens advancing and retreating on the optical axis with the zoom lens located at the position indicated by the position information.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 16, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: MITSUYOSHI OKAMOTO, KOJI SHIBUNO, AKIHIRO OKAMOTO, TAKASHI ABE
  • Patent number: 7710491
    Abstract: The object of this invention is to attain accurate control by correcting any deviation of a cam locus due to manufacturing errors and the like upon controlling a zoom lens and focus lens along a theoretical cam locus. To attain this object, a differential locus between the theoretical cam locus (stored cam locus) and a true cam locus due to an error obtained by a measurement is obtained, and is stored as cam correction data. The lens control is made while correcting the theoretical cam locus by the correction data.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: May 4, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Seiya Ohta
  • Patent number: 7643082
    Abstract: A scan representation position table to which three points of focus positions which become scan representation positions are recorded respectively is stored in advance based on the lens position of the zoom lens 2b and the type of priority focus. The current zoom lens 2b lens position is acquired and determination processing for short-distance priority focus or long-distance priority focus is performed when judged that the shutter button has been fully depressed at once or when the shutter button has been fully depressed before the passage of a predetermined time duration after the shutter button was halfway depressed. Then, the focus positions are acquired from the scan representation position table based on the acquired lens position and the judged priority focus, and the contrast AF processing is executed within the range of the acquired three points of focus positions.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: January 5, 2010
    Assignee: Casio Computer Co., Ltd.
    Inventor: Masaru Onozawa
  • Patent number: 7616876
    Abstract: A lens control device, for controlling driving of a second lens unit for correcting image movement regarding movement of a variating first lens unit, comprises: a storage unit for storing data indicating the position of the second lens unit corresponding to the position of the first lens unit created for a predetermined focal distance; a control unit for generating information to control driving of the second lens unit based on the data, and for controlling driving of the second lens unit based on this information; and a distance detecting unit for detecting distance to the focus object; wherein the control unit restricts the range of the generated information based on the detection results from the distance detecting unit. Or, the control unit controls driving for the second lens unit to generate the information, and performs weighting based on detection results from the distance detecting unit relating to driving control.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: November 10, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Okawara
  • Publication number: 20090245776
    Abstract: An image capturing device includes a lens unit, an image sensor, a face recognition unit, a selecting unit, an auto-focusing (AF) unit and a driving unit. The lens unit focuses images onto the image sensor. The image sensor converts the images into electronic signals. The face recognition unit locates any faces in a current image. If faces are detected, the selecting unit indicates to a user where the faces are located in the image, and selects one of the locations as a main focus area in response to a user input. The driving unit is configured for moving the lens unit. The AF unit controls the driving unit to focus the lens unit according to the selected location.
    Type: Application
    Filed: July 2, 2008
    Publication date: October 1, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: WEI-JEN WANG, SHIH-PAO CHENG
  • Patent number: 7526191
    Abstract: A zoom tracking method for digital camera is disclosed. The method comprises storing a position table comprising data of several zoom position curves respect to positions of a focus lens and move the focus lens position by looking up said position table while moving a zoom lens position. The curves are divided into a first linear region, a second linear region and a nonlinear region to reduce the table size while still achieving good image quality.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: April 28, 2009
    Assignee: Primax Electronics, Ltd.
    Inventors: Chin-Chih Lin, Jui-Hsiang Lo, Chiou-Shann Fuh, Chia-Hao Chang
  • Publication number: 20090102963
    Abstract: An auto focus image system that includes an image sensor coupled to a controller. The image sensor captures an image that has at least one edge with a width. The controller generates a focus signal that is a function of the edge width. A lens receives the focus signal and adjust a focus. The edge width can be determined by various techniques including the use of gradients. A histogram of edge widths can be used to determine whether a particular image is focused or unfocused. A histogram with a large population of thin edge widths is indicative of a focused image.
    Type: Application
    Filed: April 11, 2008
    Publication date: April 23, 2009
    Inventors: Yunn-En Yeo, Hiok-Nam Tay
  • Patent number: 7474844
    Abstract: In a camera, a zoom lens and focus lens are driven to predetermined positions corresponding to a zoom magnification factor to be changed upon a demand for altering the zoom magnification factor. During a zooming operation after the camera has been brought into focus by an auto-focusing function, driving rates of the zoom lens and focus lens are controlled in each of zoom intervals to set driving times required to drive the zoom lens and focus lens to positions corresponding to the next zoom magnification factor to the quickest zoom driving time Tz of the zoom lens and the longer driving time among the quickest focus driving times Tfa, Tfb of the focus lens corresponding to object distances.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: January 6, 2009
    Assignee: Casio Computer Co., Ltd.
    Inventor: Daisuke Kokabu
  • Patent number: 7446810
    Abstract: An image capturing apparatus includes an image capturing unit for capturing an image of an object; a focal length storing unit for storing a focal length of the object which is outside of an image capturing region of the image being captured by the image capturing unit by corresponding to a positional relationship between the image capturing unit and the object; an image capturing region variation detecting unit for detecting variation in the image capturing region of the image capturing unit; a positional relationship predicting unit for predicting a positional relationship between the image capturing unit and the object after the image capturing region of the image capturing unit is varied on the basis of the variation in the image capturing region detected by the image capturing region variation detecting unit; and a focus adjustment control unit for controlling focus adjustment by the image capturing unit on the basis of the focal length stored by the focal length storing unit, wherein the focal length is
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: November 4, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Shuji Ono
  • Patent number: 7437065
    Abstract: At least one exemplary embodiment is directed to an imaging apparatus which includes a rear-focus-type lens system configured to perform autofocusing on the basis of a video signal received from an image pickup device. The imaging apparatus can determine a distance from a subject on the basis of correlation information (cam locus) detailing a correlation between the position of a zoom lens and the focus position of a focus lens, with respect to infrared light and visible light, and selects or calculates and determines a cam locus to be used.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: October 14, 2008
    Assignee: Canon Kabushiki Kaishi
    Inventor: Tsuyoshi Morofuji
  • Patent number: 7388720
    Abstract: A lens-controlling device controls a first lens unit which moves for zooming and a second lens unit which moves for correcting the displacement of an image plane caused by zooming and for focusing. The lens-controlling device includes a memory which stores data for obtaining target-position information representing a target position to which the second lens unit is to be moved, the target position corresponding to a position to which the first lens unit is moved from a current position and a controller which generates the target-position information on the basis of the data and controls the movement of the second lens unit on the basis of position information of the first lens unit and the target-position information.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: June 17, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Okawara
  • Patent number: 7119968
    Abstract: An AF control apparatus includes a plurality of movable lens groups, each of which is movable along an optical axis for performing focusing independently, and a driving system for moving each of the movable lens groups. A moving path of each of the movable lens groups during an autofocusing operation is defined so that a ratio of moving distances of the each of the movable lens groups is constant over an entire zoom range.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: October 10, 2006
    Assignee: PENTAX Corporation
    Inventors: Noboru Saito, Takamitsu Sasaki, Hideyuki Yamamoto
  • Patent number: 7016122
    Abstract: A lens-controlling device controls a first lens unit which moves for zooming and a second lens unit which moves for correcting the displacement of an image plane caused by zooming and for focusing. The lens-controlling device includes a memory which stores data for obtaining target-position information representing a target position to which the second lens unit is to be moved, the target position corresponding to a position to which the first lens unit is moved from a current position and a controller which generates the target-position information on the basis of the data and controls the movement of the second lens unit on the basis of position information of the first lens unit and the target-position information.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: March 21, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Okawara
  • Patent number: 6993256
    Abstract: A focus lens and a zoom lens group having a first zoom lens and a second zoom lens are controlled separately from one another in an internal-focus camera. The positions of the focus lens and the second zoom lens in the zoom lens group are tracked, and are controlled to approach no closer to one another than a minimum safe distance to avert collisions between the focus lens and the second zoom lens.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: January 31, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michelle Ogg, David K. Campbell, Gregory V Hofer, Masahiro Ohno, Yoshihiro Yamazaki
  • Patent number: 6972797
    Abstract: An auto-focusing device and an electronic image pickup apparatus facilitates realizing a high focusing accuracy and a quick focusing operation simultaneously using an inexpensive plastic lens mount. The auto-focusing device according includes a means for correcting the conversion reference, if necessary, for converting the object distance measured by the open-control range finding means to a focusing position of the focusing lens based on the conversion reference and for moving the focusing lens to the converted focusing position. The electronic image pickup apparatus includes the auto-focusing device.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: December 6, 2005
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Akio Izumi
  • Patent number: 6853501
    Abstract: A zoom optical system capable of selecting different focusing methods is disclosed. This zoom optical system includes a variable power unit that performs a variable power operation while moving during zooming; a first focusing unit positioned in front of the variable power unit; a second focusing unit positioned at the back of the variable power unit; a sensor that detects the position of the first focusing unit; and a memory that stores movement information of the second focusing unit during zooming according to the position of the first focusing unit. Herein, the second focusing unit changes in the moving locus thereof during zooming, based on the position information about the first focusing unit detected by the sensor and the information from the memory.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: February 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hitoshi Mukaiya
  • Patent number: 6714731
    Abstract: A focus lens and a zoom lens group having a first zoom lens and a second zoom lens are controlled separately from one another in an internal-focus camera. The positions of the focus lens and the second zoom lens in the zoom lens group are tracked, and are controlled to approach no closer to one another than a minimum safe distance to avert collisions between the focus lens and the second zoom lens.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: March 30, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michelle Ogg, David K. Campbell, Gregory V Hofer, Masahiro Ohno, Yoshihiro Yamazaki