Focus Position Adjusted According To Focal Length Patents (Class 396/82)
  • Patent number: 10165188
    Abstract: In an optical apparatus, when a magnification varying lens is located at a first zoom position, a display unit displays information indicative of an object distance acquired based on the electronic cam data, the first zoom position, and a position of a focusing device detected while the magnification varying lens is being located at the first zoom position. In a period for the position of the magnification varying lens to change from the first zoom position to a second zoom position, the display unit displays the information indicative of the object distance acquired based on the electronic cam data, a zoom position detected by the zoom position detector, and the position of the focusing device at the detected zoom position, which has been calculated based on the electronic cam data and the position of the focusing device corresponding to the first zoom position.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: December 25, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takeshi Kakimoto
  • Patent number: 9354504
    Abstract: A system for controlling a camera rig to capture a stereographic image having a single signal generator which integrally processes encoder signals created from a plurality of motors, in which a single signal counter processes signals generated from the integrated signal generator, without the need for signal counters provided in the respective motors.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: May 31, 2016
    Assignee: REDROVER CO., LTD.
    Inventors: Jung Il Park, Young Hun Kim, Dong Soo Kim, Jun Woo Seoung
  • Patent number: 8965192
    Abstract: A change to the telephoto side by the zoom control unit makes the stored zoom position as a target, a focus adjustment unit moves a focus lens so as to bring an object into an in-focus state, and the focus adjustment unit, while processing for changing the zoom position is being performed by the zoom control unit, performs a regulating operation of operation for focusing on the object.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: February 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Naoki Iwasaki
  • Publication number: 20140169778
    Abstract: In the present invention, in a state where a photographing parameter of an imaging section (for example, the focal length of a zoom lens) has been set within the range between a first value (for example, a wide angle end of 18 mm) and a second value (for example, a telephoto end of 140 mm), and a reference value (for example, 28 mm) for the photographing parameter has been set within the range between the first value and the second value, a control section changes the set parameter to the reference value.
    Type: Application
    Filed: November 6, 2013
    Publication date: June 19, 2014
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Toru NAKAKUSU
  • Patent number: 8724980
    Abstract: A lens driving apparatus comprises: a zoom lens driven in an optical axis direction; first and second correction lenses driven in the optical axis direction; a storage unit that stores, for each predetermined focal length, positional relationships between the zoom lens, and the first and second correction lenses used for correcting a shift of an image plane upon driving of the zoom lens; a position detection unit that detects a position of the second correction lens; and a control unit that calculates driving amounts of the first correction lens and the second correction lens, and controls driving of the first and second correction lenses. The control means corrects an image plane position difference caused by a difference between a position of the second correction lens corresponding to a position of the zoom lens, and the detected position of the second correction lens, by moving the first correction lens.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideyasu Hongu
  • Patent number: 8724011
    Abstract: The image pickup apparatus includes a first detector detecting a first in-focus position by a phase difference detection method using paired image signals, a controller controlling position of a focus lens a basis of the first in-focus position to perform focusing, a second detector detecting a second in-focus position by a contrast detection method, a calculating part calculating a correction value for correcting the first in-focus position in image capturing on a basis of difference between the first and second in-focus positions, and a determining part determining a level of reliability of the first in-focus position. The controller calculates the correction value when the level of reliability is a first level, and to restrict the calculation of the correction value when the level of reliability is a second level lower than the first level.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Miyako Nakamoto
  • Patent number: 8717691
    Abstract: A lens barrel includes a lens group including a fixed lens including one or more lenses and an adjustment lens including one or more lenses, and a lens frame to hold the lens group, including an adjustment lens frame to hold the adjustment lens and an aligning mechanism to hold the adjustment lens frame movably in a direction orthogonal to an optical axis of the lens group relative to the lens frame.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 6, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Daisuke Terahara, Takehide Ohno
  • Patent number: 8676049
    Abstract: An imaging control unit includes: a detecting unit that detects a focused-status of a focus detecting range set to an image data of each frame; a setting unit that sets, at a position of a distinctive-region including a distinctive points of an object detected from an processed image data, a focus detecting range of an image data of a subsequent frame; and a control unit that performs, when the focus detecting range is not in focused-status, a focal length control to change a focal length of a imaging lens so that the focus detecting range is in focused-status. When a displacement amount from the focus detecting range set to the imaged image data to the distinctive-region detected in the processed image data based on the imaged image data is large, the control unit aborts performing the focal length control even when the focus detecting range is not in focused-status.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: March 18, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Takaaki Yonekawa
  • Patent number: 8670657
    Abstract: The ranging apparatus of the present invention measures the distance to an object to be imaged by an imaging apparatus using the principle of triangulation ranging, and has a measurement unit in which a maximum distance that can be ranged to an object is not less than ½ of a maximum value of the hyper focal length of the imaging apparatus.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masakazu Kodaira
  • Patent number: 8614763
    Abstract: An auto-focusing camera module includes a lens module, an image sensor, a color separation unit, a controller, and a shape memory alloy. The lens module captures light signal of an object. The image sensor senses the light and forms an image. The color separation unit separates the image into red image, green image and blue image. The controller calculates MTF values of the image and determines a shooting distance between the lens module and the object. When the shooting distance is greater than a predetermined distance value, the controller processes the image according to the MTF values to compensate blurs of the image caused by out of focus; when the shooting distance is equal to or less than the predetermined distance value, the controller controls the shape memory alloy drive the lens module to an optimum focusing position for focus according to the MTF values.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: December 24, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Yu-Han Chen, Yu-Chen Yao
  • Patent number: 8614762
    Abstract: An auto-focusing apparatus controls backlash compensation driving of a focus lens during exposure preparation when focusing is performed by moving the focus lens to a target position of the focus lens. A shutter release time lag can be reduced, and in particular, the auto-focusing apparatus can be usefully applied to the case where a moving subject is photographed.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: December 24, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Masataka Hamada
  • 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
  • Patent number: 8600226
    Abstract: Focusing methods, apparatus, and computer-readable recording media having recorded thereon the focusing methods are disclosed. In an example focusing method, a focus evaluation value is divided into first information and second information. The first information represents a difference between focus evaluation values, which are obtained according to location of a focus lens, to be relatively large, and the second information represents the difference to be relatively small. Then, at least one from among the first information and the second information is provided to a user so that the user may easily and more accurately determine whether a subject is in focus.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: December 3, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Masataka Hamada, Kenji Ishibashi
  • 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: 8582018
    Abstract: An imaging device includes a detector that repeatedly carries out a series of operation of generating an evaluation value to evaluate the degree of focusing of a position after driving of a lens toward one end part in the drive range of the lens, and detects the evaluation value of a position that is closer to the end part than the position of the evaluation value of the highest degree of focusing and is immediately adjacent or adjacent across a predetermined number of positions to the position of the evaluation value of the highest degree of focusing. The imaging device further includes a drive controller that makes the series of operation be repeatedly carried out toward the other end part in the drive range of the lens, and drives the lens to a position of a degree of focusing not smaller than the detected evaluation value.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Futami, Shinichi Ohtsubo, Atsushi Iwasaki
  • Patent number: 8537265
    Abstract: An imaging apparatus that determines in-focus conditions according to a user's taste by using auto-focus (AF). The imaging apparatus including an AF unit, that allows the user to input an in-focus operation start command, and that allows the user to input a main photographing start command. The imaging apparatus includes a photographing environment storing unit that stores photographing stop and start data, an assumed in-focus condition group generating unit that generates an assumed in-focus condition group based on at least the photographing stop data, an assumption confirming unit that confirms the assumed in-focus condition group, and an in-focus condition group changing unit that, if an in-focus success rate for the assumed in-focus condition group is higher than for the default in-focus condition group, changes the default in-focus condition group to the assumed in-focus condition group.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 17, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tadashi Naruse
  • Patent number: 8532477
    Abstract: A lens control device which is capable of controlling lens positions such that an in-focus state of an object image can be maintained even when a variable power lens is positioned outside a normal zoom range from a wide-angle end to a telephoto end. A flash memory stores a positional relationship between the variable power lens and a focus lens, on an object distance-by-object distance basis. A system controller controls the movement of the focus lens by calculating the in-focus position of the focus lens with respect to the position of the variable power lens based on the positional relationship stored in the flash memory when the variable power lens is moved to a position outside the normal zoom range defined in the positional relationship stored in the flash memory.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yusuke Kazami
  • Patent number: 8482657
    Abstract: An imaging apparatus having a function of enabling focus detection at high speed while exposing an image sensor to light. Imaging apparatus 1 has: a first photoelectric converting element (image sensor 10) that converts an optical image formed on an imaging plane into an electrical signal for forming an image signal; and a second photoelectric converting element (phase difference detecting sensor 20) that receives light having passed through the first photoelectric converting element and converts light into an electrical signal for distance measurement.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 9, 2013
    Assignee: Panasonic Corporation
    Inventor: Dai Shintani
  • Patent number: 8462356
    Abstract: An apparatus for observing the optical appearance of a surface (2) of a sample (1) of semitransparent material, in particular the surface (2) of a human skin, the apparatus comprising a light source (11,12,13,16,17) for illuminating at least a region of interest of the surface (2) of the sample (1) from a predetermined direction, a camera (14) for observing a response to the illumination of the region of interest and an optical focus device (21,31) for determining if the camera (14) is in focus with the surface (2) of the region of interest. The invention also relates to a method for observing the optical appearance of the surface (2) of a sample (1) of semitransparent material, in particular the surface (2) of a human skin.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: June 11, 2013
    Assignee: Koninnklijke Philips Electronics N.V.
    Inventor: Sipke Wadman
  • Patent number: 8380059
    Abstract: A focus adjusting apparatus comprises a focus operating unit for generating a focus command signal for driving a focus lens according to an operating amount of the focus operating unit; a focus driving unit for driving the focus lens in response to the focus command signal from the focus operating unit; a focus position detecting unit for detecting a position of the focus lens; a focus detecting unit for detecting whether or not in-focus is achieved or detecting deviation amount from in-focus position; and an operation sensitivity determining unit for determining a focus operating sensitivity of the focus operating unit, wherein the operation sensitivity determining unit determines the focus operating sensitivity and the position of the focus lens, and wherein the focus driving unit drives the focus lens according to the focus operating sensitivity.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: February 19, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kato
  • Publication number: 20130022342
    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: Application
    Filed: July 13, 2012
    Publication date: January 24, 2013
    Applicant: ELMO COMPANY, LIMITED
    Inventors: Masaaki Toguchi, Tetsuya Horike
  • Publication number: 20130022343
    Abstract: A camera, comprising an optical system for capturing an image of a subject, in which a zoom position and a focus position are adjusted by an adjustment operation performed by a user; the camera comprising a replication information holding unit for recording and holding the zoom position and the focus position adjusted by the adjustment operation as a replication zoom position and a replication focus position respectively; and a replication assistance unit for assisting replication of the zoom position and the focus position; the replication assistance unit being configured so as to automatically adjust the focus position to the replication focus position when the zoom position is adjusted by the adjustment operation so as to substantially match the replication zoom position.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Susumu Ozeki
  • Patent number: 8334923
    Abstract: A digital camera has an optical system, an image capturing unit, an aperture adjuster, a focal point adjuster, and a body microcomputer. The aperture adjuster has an aperture included in the optical system and is capable of adjusting the state of the aperture. The focal point adjuster has a focus lens included in the optical system and is capable adjusting the focal state of the optical system by using the focus lens by contrast detection method. The body microcomputer controls the operation of the aperture adjuster so that the aperture value of the optical system will be at or below a set aperture value before the focal state is adjusted by the focal point adjuster.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 18, 2012
    Assignee: Panasonic Corporation
    Inventor: Naoto Yumiki
  • Patent number: 8260131
    Abstract: Background blurring is provided when capturing an image using an image capture device. Input is received for initiating an image capture process for capturing an image at an image capture device. A background is automatically blurred based on a depth of field automatically adjusted towards the image capture device for capturing the image with background blurring in response to receiving the input for initiating the image capture process.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 4, 2012
    Assignee: Scenera Technologies, LLC
    Inventor: Robert J. Sundstrom
  • Patent number: 8254773
    Abstract: An image apparatus includes a screen, a detecting unit, a determining unit, an acquiring unit and a control unit. The screen is configured to display an image formed by an optical system and at least one detection position superimposed onto the image. The detecting unit is configured to detect information regarding focus of the optical system at the detection position. The determining unit is connected to the detecting unit and configured to determine whether the information regarding the focus is within a predetermined range. The acquiring unit is connected to the determining unit and configured to acquire first image information at the detection position when the determining unit determines that the information regarding the focus is within the predetermined range. The control unit is connected to the acquiring unit and configured to evaluate arbitrary second image information in the screen using the first image information.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 28, 2012
    Assignee: Nikon Corporation
    Inventor: Keiko Muramatsu
  • Patent number: 8243170
    Abstract: A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention, in order from an object side to an image side, comprises: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; and an aperture diaphragm. At the time of zooming, the zoom lens system moves the first to third lens units so that intervals between these lens units vary. At the time of focusing from an infinity in-focus condition to a close-point object in-focus condition, the zoom lens system moves the third lens unit to the object side.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: August 14, 2012
    Assignee: Panasonic Corporation
    Inventors: Kyoichi Miyazaki, Katsu Yamada, Takuya Imaoka, Masaki Sampei
  • Patent number: 8223255
    Abstract: An imaging apparatus including an imaging function having an imaging section configured such that a plurality of pixels are arrayed in a vertical direction and a horizontal direction, images a subject; a detecting function for detecting whether the imaging apparatus including the imaging section is held vertically or horizontally; a readout function for reading out the pixels information of the plurality of the pixels from the imaging section; a first readout controlling function for controlling a readout process of the pixel information executed by the readout function, in accordance with a detection result from the detecting section; a calculating function for calculating an auto-focus evaluation value in accordance with the pixel information read out by the first readout controlling function; and a focusing function for focusing in accordance with the auto-focus evaluation value calculated by the calculating function.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: July 17, 2012
    Assignee: Casio Computer Co., Ltd.
    Inventor: Masami Yuyama
  • Patent number: 8218960
    Abstract: A lens apparatus includes an imaging optical system including a focus lens unit, a branching optical unit disposed at the image side of the focus lens unit, a focus-state detecting unit including a focus detecting element having a focus detection area that receives light beams from the branching optical unit, and detecting a focus state by using the focus detecting element, an actuator that drives the focus lens unit in an optical axis direction thereof, a controller that controls the actuator, in accordance with an output from the focus-state detecting unit, and a movable image-side optical unit disposed at the image side of the branching optical unit. The controller changes the size of the focus detection area of the focus detecting element within a range in accordance with the position of the image-side optical unit.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: July 10, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryuji Nurishi
  • Patent number: 8203628
    Abstract: A camera system that can maintain a good focus state regardless of the speed of zooming during variable proportion zooming is provided. The camera system has a control portion that, based on information on the speed of the change in the focal length, determines whether to control a focus lens drive portion in either a first control mode or a second control mode. If it determines that control is to be performed in the first control mode, then the control portion controls the focus lens drive portion so that it drives a focus lens in the direction that brings a predetermined captured object into focus based on estimated values for auto focusing that have been calculated from the image data at various positions by controlling the focus lens drive portion so that the captured object distance is moved forward and backward in the optical axis direction.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: June 19, 2012
    Assignee: Panasonic Corporation
    Inventors: Kenichi Honjo, Koji Shibuno, Masato Murayama
  • Patent number: 8139140
    Abstract: A digital camera has an optical system, an image capturing unit, an aperture adjuster, a focal point adjuster, and a body microcomputer. The aperture adjuster has an aperture included in the optical system and is capable of adjusting the state of the aperture. The focal point adjuster has a focus lens included in the optical system and is capable adjusting the focal state of the optical system by using the focus lens by contrast detection method. The body microcomputer controls the operation of the aperture adjuster so that the aperture value of the optical system will be at or below a set aperture value before the focal state is adjusted by the focal point adjuster.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 20, 2012
    Assignee: Panasonic Corporation
    Inventor: Naoto Yumiki
  • Patent number: 8139139
    Abstract: An imaging apparatus having a function of enabling focus detection at high speed while exposing an image sensor to light. Imaging apparatus 1 has: a first photoelectric converting element (image sensor 10) that converts an optical image formed on an imaging plane into an electrical signal for forming an image signal; and a second photoelectric converting element (phase difference detecting sensor 20) that receives light having passed through the first photoelectric converting element and converts light into an electrical signal for distance measurement.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: March 20, 2012
    Assignee: Panasonic Corporation
    Inventor: Dai Shintani
  • Publication number: 20120063759
    Abstract: A change to the telephoto side by the zoom control unit makes the stored zoom position as a target, a focus adjustment unit moves a focus lens so as to bring an object into an in-focus state, and the focus adjustment unit, while processing for changing the zoom position is being performed by the zoom control unit, performs a regulating operation of operation for focusing on the object.
    Type: Application
    Filed: August 26, 2011
    Publication date: March 15, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Naoki Iwasaki
  • Patent number: 8084969
    Abstract: A linear motion control device for use in a linear control system is presented. The linear motion control device includes a coil driver to drive a coil that, when driven, effects a linear movement by a motion device having a magnet. The linear motion control device also includes a magnetic field sensor to detect a magnetic field associated with the linear movement and an interface to connect an output of the magnetic field sensor and an input of the coil driver to an external controller. The interface includes a feedback loop to relate the magnetic field sensor output signal to the coil driver input.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: December 27, 2011
    Assignee: Allegro Microsystems, Inc.
    Inventors: Paul David, Shaun D. Milano
  • Patent number: 8081253
    Abstract: A zoom lens has a negative object side lens unit (or first lens unit G1), a positive image side lens unit (or third lens unit G3), a positive intermediate lens unit (or second lens unit G2), and an aperture stop. The distance between the object side lens unit and the intermediate lens unit is smaller at the telephoto end than at the wide angle end, the distance between the intermediate lens unit and the image side lens unit is larger at the telephoto end than at the wide angle end, the intermediate lens unit moves in such a way that it is located closer to the object side at the telephoto end than at the wide angle end, the image side lens unit moves in such a way that it is located closer to the image side at the telephoto end than at the wide angle end, the aperture stop moves integrally with the intermediate lens unit. The image side lens unit is composed of two lens component including a front lens component and a positive rear lens component arranged in the mentioned order from the object side.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: December 20, 2011
    Assignee: Olympus Imaging Corp.
    Inventor: Keisuke Ichikawa
  • Patent number: 8045045
    Abstract: An image pickup apparatus which is capable of optimizing the responsiveness of linear changes in focus to operations of a ring member without sacrificing the operability of the ring member, while using a small-sized, low-cost ring member for manual operations. The rotating operation state of a focus ring 600 is detected by ring rotation sensors 603, 604. A camera microcomputer 116 causes a focus lens 105 to be moved and stopped in an optical axis direction thereof based on results of the detection by the ring rotation sensors 603, 604. The camera microcomputer 116 controls the responsiveness of linear changes in focus to the rotating operation state of the ring member detected by the ring rotation sensors 603, 604 in accordance with at least the depth of focus.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: October 25, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Okawara
  • Patent number: 7957635
    Abstract: A method and system are described for providing background blurring when capturing an image using an image capture device. According to one aspect, input is received for initiating an image capture process for capturing an image of a subject at an image capture device. A depth of field for capturing the image of the subject in a half of the depth of field furthest from the image capture device is automatically determined. The image is captured using the automatically adjusted depth of field to provide background blurring in the captured image.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: June 7, 2011
    Assignee: Scenera Technologies, LLC
    Inventor: Robert J. Sundstrom
  • Patent number: 7929850
    Abstract: Provided is a method and apparatus for measuring a distance between an object and a user using a camera module. According to the method, when the camera module is driven, a zooming function is performed to examine whether an image is formed on an image device. When the zooming function is completed, a focusing function is performed to examine whether focusing is adjusted. When focusing is adjusted, a focal length “f” and a distance “b” between a lens and the image device are calculated. Thereafter, a distance “a” between an object and a user is calculated and displayed using a lens Equation. Since a distance between a desired object and a user can be measured only using a zoom function and a focusing function of an existing camera module without a separate distance measurement device, the distance between the desired object and a user can be easily measured without increase in a volume of an apparatus or manufacturing costs.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: April 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Hyun Yoon, Chang-Ki Lee
  • Patent number: 7929044
    Abstract: An autofocus searching method includes the following procedures. First, focus values of images, which are acquired during the movement of the object lens, are calculated, in which the focus value includes at least the intensity value of the image derived from the intensities of the pixels of the image. Next, focus searching is based on a first focus-searching step constant and a first focus-searching direction, in which the first focus-searching step constant is a function, e.g., the multiplication, of the focus value and a focus-searching step size. If the focus searching position moves across a peak of the focus values, it is then amended to be based on a second focus-searching direction and a second focus-searching step constant, in which the second focus-searching step constant is smaller than the first focus-searching step constant, and the second focus-searching direction is opposite to the first focus-searching direction.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: April 19, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Jin-Liang Chen, Chung Chu Chang, Chi Hong Tung
  • Patent number: 7847856
    Abstract: The present invention discloses a digital camera having a camera body and a lens unit removably mounted on the camera body, in which the camera body calculates, based on information related to the lens unit, an optimum moving speed as an optimum speed for moving the lens unit upon causing the lens unit to perform focusing by an imager AF method (hill-climbing method).
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: December 7, 2010
    Assignee: Olympus Imaging Corp.
    Inventor: Hisayuki Matsumoto
  • Patent number: 7769283
    Abstract: A lens apparatus includes an imaging optical system including a focus lens unit, a branching optical unit disposed at the image side of the focus lens unit, a focus-state detecting unit including a focus detecting element having a focus detection area that receives light beams from the branching optical unit, and detecting a focus state by using the focus detecting element, an actuator that drives the focus lens unit in an optical axis direction thereof, a controller that controls the actuator, in accordance with an output from the focus-state detecting unit, and a movable image-side optical unit disposed at the image side of the branching optical unit. The controller changes the size of the focus detection area of the focus detecting element within a range in accordance with the position of the image-side optical unit.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: August 3, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryuji Nurishi
  • Patent number: 7711260
    Abstract: There is disclosed a digital camera which detects a focus of a lens unit by a method selected from a plurality of focus detection methods based on information on the lens unit taken from the lens unit attached to the digital camera. As an example of a focus detection method, there is a method by a phase difference system or a contrast system, but the method is not limited to this example.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: May 4, 2010
    Assignee: Olympus Imaging Corp.
    Inventors: Masataka Ide, Hisayuki Matsumoto
  • Patent number: 7711253
    Abstract: A blur correction camera system includes a blur correction lens driven based upon the vibration detection signal detected by an angular velocity sensor, that corrects an image blur, a point-image function computing unit that computes a point spread function, and an image restoration computing unit that corrects an image blur by executing image restoration through image processing on a captured image by using the point spread function. The image blur that cannot be completely corrected by the blur correction lens is further corrected through image restoration so as to obtain a high quality image.
    Type: Grant
    Filed: December 25, 2003
    Date of Patent: May 4, 2010
    Assignee: Nikon Corporation
    Inventors: Hiroyuki Tomita, Kazutoshi Usui, Kenichi Kitano, Yoshiko Ono
  • Patent number: 7710493
    Abstract: An image-pickup apparatus includes a first detector configured to generate first information corresponding to a contrast state of a picked-up image, a second detector configured to detect second information that is used for focus control and different from the first information, a controller configured to provide the focus control, and a first operating member operable by a user, wherein the controller provides the focus control that uses the first information but does not use the second information when the first operating member is not operated, and provides the focus control that uses at least the second information when the operating member is operated.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: May 4, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hitoshi Yasuda
  • 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: 7693405
    Abstract: An image pickup device is provided which includes: an auto focus control unit sampling contrast values as a function of a relative distance from an object by detecting a contrast of an image of the object while driving a lens in an optical axis direction, calculating a focused focal position on the basis of the contrast values, and driving the lens to the focused focal position; a shake detecting unit detecting at least an amount of shake in the optical axis direction of the lens; and a selection judging unit judging selection and non-selection of the sampled contrast values depending on the amount of shake in the optical axis direction of the lens at the time of the sampling. Here, the auto focus control unit calculates the focused focal position on the basis of the contrast value judged as being selected by the selection judging unit among the sampled contrast values.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: April 6, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Kazuhiro Sakamoto, Michihiro Nagaishi, Tatsuya Hosoda
  • Patent number: 7657171
    Abstract: A method and system are described for providing background blurring when capturing an image using an image capture device. According to one aspect, input is received for initiating an image capture process for capturing an image of a subject at an image capture device. A focus value corresponding to a focus distance that is less than a distance between the subject and the image capture device and that keeps the subject within a depth of field corresponding to the focus distance is automatically determined. The image is captured using the determined focus value.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: February 2, 2010
    Assignee: Scenera Technologies, LLC
    Inventor: Robert J. Sundstrom
  • Patent number: 7639935
    Abstract: A device may establish a distance of a device from a reference object. The device may also determine a difference or change in the distance, obtain a zoom value based on the difference or change, and zoom in or out on a view based on the zoom value.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: December 29, 2009
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Lars Bjorn Pontus Bartilson, Johan Peter Cederberg
  • 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
  • Patent number: 7590339
    Abstract: A digital camera is provided with a photographing lens, an image capturing element, which is configured to capture an optical image of an object formed by the photographing lens, a coarse movement control system configured to control a position of the photographing lens in a direction of an optical axis by a motor, and a fine movement control system configured to control a position of an image receiving area of the image capturing element in the direction of the optical axis is provided.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: September 15, 2009
    Assignee: HOYA Corporation
    Inventor: Yuichi Kurosawa
  • Publication number: 20090196591
    Abstract: A lens apparatus includes an imaging optical system including a focus lens unit, a branching optical unit disposed at the image side of the focus lens unit, a focus-state detecting unit including a focus detecting element having a focus detection area that receives light beams from the branching optical unit, and detecting a focus state by using the focus detecting element, an actuator that drives the focus lens unit in an optical axis direction thereof, a controller that controls the actuator, in accordance with an output from the focus-state detecting unit, and a movable image-side optical unit disposed at the image side of the branching optical unit. The controller changes the size of the focus detection area of the focus detecting element within a range in accordance with the position of the image-side optical unit.
    Type: Application
    Filed: April 1, 2009
    Publication date: August 6, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Ryuji Nurishi