With At Least One Paired Set Of Staring Photodetectors Patents (Class 356/3.08)
  • Patent number: 10942261
    Abstract: A range sensor and a method thereof. The range sensor includes a light source configured to project a sheet of light at an angle within a field of view (FOV); an image sensor offset from the light source; collection optics; and a controller connected to the light source, the image sensor, and the collection optics, and configured to determine a range of a distant object based on direct time-of-flight and determine a range of a near object based on triangulation. The method includes projecting, by a light source, a sheet of light at an angle within an FOV; offsetting an image sensor from the light source; collecting, by collection optics, the sheet of light reflected off objects; and determining, by a controller connected to the light source, the image sensor, and the collection optics, a range of a distant object based on direct time-of-flight and a range of a near object based on triangulation simultaneously.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: March 9, 2021
    Inventor: Yibing Michelle Wang
  • Patent number: 10914576
    Abstract: A handheld large-scale three-dimensional measurement scanner system simultaneously having photogrammetric and three-dimensional scanning functions includes: two cameras at fixed positions; at least one pattern projector; a photogrammetric module; and a three-dimensional scanning module, wherein at least one of the two cameras is a multipurpose camera that performs photogrammetry and three-dimensional scanning, wherein the photogrammetric module is configured to perform, by operating the multipurpose camera, global photogrammetry on a measured object and obtain three-dimensional coordinates of markers on a surface of the object, and wherein the three-dimensional scanning module is configured to perform, by operating the two cameras and the one pattern projector, three-dimensional scanning on the measured object by using the obtained markers as global positioning information of the measured object, and obtain three-dimensional contour data of the surface of the object.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: February 9, 2021
    Assignee: ScanTech (Hangzhou) Co., Ltd.
    Inventors: Jun Zheng, Shangjian Chen
  • Patent number: 10491799
    Abstract: A focus detection apparatus includes a first acquirer configured to acquire a first distance as a distance between a pair of object images in the first direction based on the pair of phase difference image signals, a second acquirer configured to acquire a correction value corresponding to a second distance as the distance in the second direction, and a calculator configured to calculate the phase difference using the first distance and the correction value.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: November 26, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Abe, Takashi Ichimiya
  • Patent number: 10325377
    Abstract: An image depth sensing method adapted to obtain depth information within a field of view by an image depth sensing apparatus is provided. The method includes the following steps: determining whether the field of view includes a distant object with a depth greater than a distance threshold; in response to determining that the field of view does not include the distant object, obtaining the depth information within the field of view according to a general mode; and in response to determining that the field of view includes the distant object, obtaining the depth information within the field of view according to an enhanced mode. A maximum depth which can be detected in the general mode is not greater than the distance threshold, and a maximum depth which can be detected in the enhanced mode is greater than the distance threshold. In addition, an image depth sensing apparatus is also provided.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 18, 2019
    Assignee: Wistron Corporation
    Inventor: Yao-Tsung Chang
  • Patent number: 9432655
    Abstract: A three-dimensional (3D) scanner including a light-source module, a screen, a rotary platform, an image capturing unit and a process unit is provided. The light source module is configured to emit a beam. The screen disposed on a transmission path of the beam has a projection surface facing the light source module. The rotary platform carrying a 3D object is disposed between the light source module and the screen. The 3D object is rotated to a plurality of object orientations about a rotating axis to form a plurality of object shadows on the projection surface. The image capturing unit is configured to capture the object shadows from the projection surface to obtain a plurality of object contour images. The process unit is configured to read and process the object contour images to build the digital 3D model related to the 3D object according to the object contour images.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: August 30, 2016
    Assignees: XYZprinting, Inc., Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventors: Yang-Teh Lee, Kwan Ho
  • Patent number: 9360307
    Abstract: A structured-light measuring method, includes: matching process, in which the number and the low-precision depth of a laser point are achieved by using the imaging position of the laser point on a first camera (21) according to a first corresponding relationship in a calibration database, and the imaging position of the laser point on a second camera (22) is searched according to the number and the low-precision depth of the laser point so as to acquire the candidate matching points, then the matching process is completed according to the imaging position of the first camera (21) and the candidate matching points of the imaging position of the first camera (21) on the second camera (22) so that a matching result is achieved; and computing process, in which the imaging position of the second camera (22) matching with the imaging position of the first camera (21) is achieved according to the matching result, and then the precision position of the laser point is determined by a second corresponding relationship
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: June 7, 2016
    Assignee: SHENZHEN TAISHAN ONLINE TECHNOLOGY CO., LTD
    Inventors: Danwei Shi, Di Wu, Wenchuang Zhao, Qi Xie
  • Patent number: 9094602
    Abstract: An imaging device of the present invention comprises a focus detection section using phase difference detection based on output of the focus detection pixels, a pixel adding section, for creating respective first addition outputs by adding outputs of a first number of focus detection pixels, and creating respective second addition outputs by dividing the first number of arrays into a plurality, and adding outputs of focus detection pixels of the divided array, and a determination section for determining whether or not to correct an angle error, wherein the focus detection section executes a focus detection operation on the basis of the first addition outputs, the determination section determines whether or not to correct angle error on the basis of the plurality of second addition outputs, and in the event that the determination section has determined to correct angle error, the focus detection section corrects angle error based on a result of a focus detection operation.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: July 28, 2015
    Assignees: Olympus Corporation, Olympus Imaging Corp.
    Inventors: Kazumasa Kunugi, Yoshinobu Omata, Yukie Yamazaki, Tetsuo Kikuchi
  • Patent number: 9041914
    Abstract: A noncontact optical three-dimensional measuring device that includes a projector, a first camera, and a second camera; a processor electrically coupled to the projector, the first camera and the second camera; and computer readable media which, when executed by the processor, causes the first digital signal to be collected at a first time and the second digital signal to be collected at a second time different than the first time and determines three-dimensional coordinates of a first point on the surface based at least in part on the first digital signal and the first distance and determines three-dimensional coordinates of a second point on the surface based at least in part on the second digital signal and the second distance.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 26, 2015
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Yazid Tohme, Charles Pfeffer, Robert E. Bridges
  • Publication number: 20140268093
    Abstract: A noncontact optical three-dimensional measuring device that includes a projector, a first camera, and a second camera; a processor electrically coupled to the projector, the first camera and the second camera; and computer readable media which, when executed by the processor, causes the first digital signal to be collected at a first time and the second digital signal to be collected at a second time different than the first time and determines three-dimensional coordinates of a first point on the surface based at least in part on the first digital signal and the first distance and determines three-dimensional coordinates of a second point on the surface based at least in part on the second digital signal and the second distance.
    Type: Application
    Filed: June 18, 2013
    Publication date: September 18, 2014
    Inventors: Yazid Tohme, Charles Pfeffer, Robert E. Bridges
  • Patent number: 8766195
    Abstract: A distance-detecting sensor may include a housing, a focusing lens, and a circuit board. Infrared light may be transmitted by a transmitter and received by a receiver. The housing may include a main body having two apertures. A transmitting lens and a receiving lens may each be positioned within one of the apertures. The circuit board may be positioned above the transmitter and the receiver and below the transmitting lens and the receiving lens. The transmitter may be an infrared light emitting diode and the receiver may be a distance-detecting sensing module. A shielding case may be provided around the transmitter and the receiver to prevent electromagnetic interference.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: July 1, 2014
    Assignee: Shanghai Kohler Electronics Ltd.
    Inventors: Qiaomei Tang, Guofeng Chen, Xingyan Liu
  • Patent number: 8735824
    Abstract: An infrared sensor module includes a first infrared sensor that includes a first light emitting unit configured to emit infrared light to an object and a first light receiving unit configured to detect an amount of infrared light reflected from the object, a second infrared sensor that includes a second light emitting unit configured to emit infrared light to the object and a second light receiving unit configured to detect an amount of the infrared light reflected from the object, and a controller to measure reflectivity of the object using a peak output voltage of the first light receiving unit, and to measure a distance to the object using not only the measured object reflectivity but also an output voltage of the second light receiving unit. As a result, the distance from the infrared sensor to the object can be correctly measured irrespective of the reflectivity of the object.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Pyo Hong, Jea Yun So, Sang Sik Yoon
  • Patent number: 8576402
    Abstract: A system for optical navigation includes a light source and an imaging system. The light source illuminates a navigation surface. The navigation surface reflects light from the light source. The imaging system is located approximately within a path of the reflected light. The imaging system includes a lens, a mask, and an image sensor. The lens receives reflected light from the navigation surface. The lens focuses a specular portion of the reflected light to a focus region. The mask is located at approximately the focus region. The mask filters out substantially all of the specular portion of the reflected light and passes at least some of a scatter portion of the reflected light outside of the focus region. The image sensor generates a navigation signal based on the scattered portion of the light that passes outside the focus region and is incident on the image sensor.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: November 5, 2013
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: Omid Momtahan
  • Patent number: 8279410
    Abstract: An optical body height measurement instrument is provided comprising: a lens configured to be movable along a direction parallel to the height of an object to be measured and form an image of the object; a photosensitive sensor arranged at an image side of the lens to sense the image; and a driving device configured to drive the lens along a direction parallel to the height of the object, wherein when the lens is moved across the height at which the head of the object is located, a hop occurs to an output of the photosensitive sensor; and wherein the height of the object is determined based on the height of the lens measured at the time of the occurrence of the hop. The optical body height measurement instrument can rapidly, conveniently and accurately measure the height based on the infrared rays emitted from the measured object or the light with a predetermined wavelength emitted from an auxiliary light source so long as the person to be measured stands within a certain region.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: October 2, 2012
    Assignee: Zhongshan Transtek Electronics Co., Ltd
    Inventor: Weichao Pan
  • Patent number: 8184267
    Abstract: The present invention provides a surveying instrument provided with a tracking function, said surveying instrument comprising a first image pickup means 40 with a first solid image pickup element 33, a second image pickup means 37 with a second solid image pickup element 19, an image pickup control instrument for controlling image pickup conditions of said first image pickup means and said second image pickup means, and a control unit for controlling the tracking operation of a target 36 based on a target image signal obtained at the first solid image pickup element or based on a target image signal obtained at the second solid image pickup element, wherein the first image pickup means can acquire an image in wider range by said second image pickup means, and wherein the image pickup control instrument controls so that a target image is acquired by the first image pickup means when the target image is out of a photodetection range of the target of the second solid image pickup element and controls so that the
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: May 22, 2012
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Kaoru Kumagai, Masahiro Saito
  • Patent number: 8126254
    Abstract: The invention relates to a measurement device for measuring the parameters of a blade rotor and a measurement process for measuring with said device, consisting of an element (1) in which at least one high speed camera (2) and a light beam emitter (3) are arranged in opposition, said element (1) being incorporated on a mobile support (5) which allows adjusting the distance with respect to the rotor (4) object of the measurement, and the assembly being connected to a processor (8) for controlling the measurement process and for processing the data which is obtained.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: February 28, 2012
    Assignees: Danobat, S. Coop., Ideko, S. Coop.
    Inventors: Andoni Aramburu Lasa, Ainhoa Gaston Caminos
  • Patent number: 7957562
    Abstract: A vision system that forms a map of a scene proximate a platform, e.g., a vehicle, that determines the actual ground plane form the map, and that corrects the map for differences between the actual ground plane and an assumed ground plane. The vision system may remove the actual ground plane from the map to prevent false positives. The vision system can further identify and classify objects and, if appropriate, take evasive action.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: June 7, 2011
    Assignee: SRI International
    Inventors: Peng Chang, David Hirvonen, Theodore Armand Camus
  • Patent number: 7852461
    Abstract: Dual mode depth imaging system and method is provided, the system comprising a first and second image sensors and a processor able to switch between a first mode of depth imaging and a second mode of depth imaging according to at least one predefined threshold. The method comprising providing depth sensing by Time of Flight if the distance of the sensed object from the camera is not below a first threshold and/or if a depth resolution above a second threshold is not required, and providing depth sensing by triangulation, if the distance of the sensed object from the camera is below the first threshold and/or if a depth resolution above the second threshold is required.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: December 14, 2010
    Assignee: Microsoft International Holdings B.V.
    Inventor: Giora Yahav
  • Patent number: 7663737
    Abstract: A sensor device including a source for electromagnetic radiation, a plurality of receivers for the electromagnetic radiation, and an electronics unit designed to transmit electromagnetic radiation by means of the source and to determine a distance which the electromagnetic radiation emitted from the source travels from the reflection surface of an object to respective receivers by evaluation of the delay time of the electromagnetic radiation and/or the phase of an oscillation modulated on to the electromagnetic radiation. The electronics unit for the detection of reflective objects, which are like floating parts and are distributed in three dimensions in a medium, is able to determine from the measured distances a first group of distances which fit a predetermined distribution, and, if there is more than one group member, to emit a signal which is associated with the detection of reflective objects which are like floating parts.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: February 16, 2010
    Assignee: Cedes AG
    Inventors: Bas Albers, Beat De Coi, Peter Nebiker
  • Patent number: 7534988
    Abstract: Optical tracking systems, method, and devices are described in which optical components detect light within a substantially planar region adjacent to a user device. Tracking logic may receive signals output by the optical components and determine coordinates associated with a movement of a pointing object through the substantially planar region. The tracking logic may then provide for translation of the coordinates into an action on a display, such as, for example, a movement of a cursor or other icon on the display.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: May 19, 2009
    Assignee: Microsoft Corporation
    Inventors: Yuan Kong, Tianpeng Zhao, Hai Ming, Jianping Xie, Jun Xu, Deyong He, Huaqiao Gui, Liang Lv, Craig S. Ranta
  • Patent number: 7333181
    Abstract: A Sensor Chip Assembly (SCA) contains a focal plane array constructed as a semiconductor chip sandwich. One slice contains an array of PSDs made from IR sensitive semiconductor material, and the other slice contains Trans Impedance Amplifiers (TIAs)—and associated on-chip signal processing elements from an electronic semiconductor material. The SCA resembles those made for pixelized imaging IR SCA focal planes, but the configuration and implementation of which is for a PSD focal plane array. The use of these techniques assures that the PSD focal plane array possesses the required attributes. Interconnect technology is widely available from most IR fabrication houses to connect the IR array with the TIA circuits.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: February 19, 2008
    Assignee: Oceanit Laboratories, Inc.
    Inventors: Basil H. Scott, Randy Wolfshagen, Jeff Buck
  • Patent number: 7292179
    Abstract: A method and apparatus for use in determining the range in a single time sample from a platform to a target are disclosed. The method includes receiving radiation emanating from the target at two points on the platform in a common time sample; detecting the received radiation and generating a signal representative thereof; and processing the signal. The signal is processed to determine a respective angle to target from two points on the platform by using a correlation between received signal amplitude and respective angle; and determine the range from the platform to the target from the respective angles and the separation distance between said two points in a single signal-to-noise sufficient sample. The apparatus includes a plurality of optical channels through which the apparatus can receive radiation emanating from the target, the optical channels and a plurality of electronics.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: November 6, 2007
    Assignee: Lockheed Martin Corporation
    Inventors: Wayne K. Schroeder, Brett A. Williams
  • Patent number: 7242789
    Abstract: Two photodetectors output electric signals based on the detection of light at light receiving sections mutually spaced apart. The output signal of one of the photodetectors is delayed and a first pulse signal is generated, and second pulse signal having no delay is generated according to based on the detection signal of the other of the two photodetectors. A detection signal is output when the pulse signals overlap. According to whether the detection signal is output, a movement direction and speed of a moving body that moves between the light receiving sections are detected.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: July 10, 2007
    Assignee: Sony Corporation
    Inventors: Misako Takayasu, Hideki Takayasu, Amane Koizumi, Junichi Akita
  • Patent number: 6864964
    Abstract: The optical distance detecting or measuring device comprises a light source with an emitting optic for projecting a light beam according to the axis of the emitting optic onto a target to be measured and a first detector defining the receiving axis contained in the same reference plane as the emitting axis. The device comprises at least a second detector that is aligned with the first detector on an axis contained in a plane that is inclined at an angle ? with respect to the reference plane, said angle being comprised between 10° and 170°. Alternatively, two emitters may be arranged in an inclined plane and one receiver in the reference plane. This arrangement allows a significant improvement of the performance of such a device.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: March 8, 2005
    Assignee: Optosys SA
    Inventors: Charles Rhême, Peter Heimlicher
  • Publication number: 20040263824
    Abstract: A range finder includes a package, a semiconductor chip, an optical casing, a lens holder, a first lens, and a second lens. The first and second lenses are attached to the lens holder. The lens holder is formed of a material having a thermal expansion coefficient equal or close to that of the semiconductor chip. The range finder is constructed such that a distance between the two lenses and a distance between two light detecting sections on the semiconductor chip do not change significantly relative to each other due to the thermal expansion or contraction.
    Type: Application
    Filed: January 20, 2004
    Publication date: December 30, 2004
    Inventors: Toshio Yamamoto, Akio Izumi
  • Patent number: 6801639
    Abstract: A distance measurement apparatus of the present invention outputs image signal from the area sensor to which an optical image is input from a plurality of distance measurement areas two-dimensionally distributed in an area to be shot. A calculation control circuit detects portions changing equally to or more than a predetermined value in positive or negative directions, for the output level of pixel rows arranged on a plurality of straight lines included in the image signal. The distance measurement area is identified, based on the output of this calculation control circuit.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: October 5, 2004
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Osamu Nonaka, Koichi Nakata
  • Patent number: 6642998
    Abstract: There is provided a measuring device whose measuring accuracy is prevented from lowering when a plurality of lenses for guiding light rays to each of a plurality of photoelectric converters are integrated for the purpose of reduction in size. The measuring device is comprised of a composite optical part and a holding member. The composite optical parts is comprised of at least first and second photoelectric converters, and integrated first and second optical functional members that guide light rays to the first and second photoelectric converters. The holding member holds the first and second photoelectric converters and the composite optical part.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: November 4, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuo Nakagawa
  • Patent number: 6614537
    Abstract: Apparatus for obtaining three-dimensional shape data of an object including a controller for controlling a light beam, a scanning system for scanning an object by the controlled light beam, and an image receiving system for receiving the light reflected from the object in a prescribed range. A memory stores data for correction of illumination irregularities corresponding to positions in the prescribed range that the light reflected from the object is received, and the controller refers to the stored data according to the position where the reflected light is received by the image receiving system, in order to control the light beam used by the scanning system.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: September 2, 2003
    Assignee: Minolta Co., Ltd.
    Inventor: Akira Yahashi
  • Patent number: 6614509
    Abstract: This distance measuring apparatus projects a first distance measurement light ray from an IRED and projects a second distance measurement light ray having an intensity higher than that of the IRED from a flash light emission portion. A distribution of incident light from the subject is converted into an electrical signal by a sensor array. A CPU determines a distance to the subject from an output of the sensor array when the first distance measurement light ray is projected and determines a distance to the subject from an output of the sensor array when the second distance measurement light ray is projected. The CPU selects either the first distance measurement light ray or the second distance measurement light ray to be used for distance measurement based on an output level of the sensor array when the first and second distance measurement light rays are not projected.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: September 2, 2003
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Osamu Nonaka, Koichi Nakata
  • Patent number: 6603534
    Abstract: A laser range finding device is shown which contains a transmitting channel and a receiving channel. The transmitting channel includes a transmitting lens and a laser light, which is positioned at a focal point of the transmitting lens. The receiving channel includes a receiving lens and a photodiode chip array arranged at a focal point of the receiving lens. The photodiode chip array includes a perforated shutter having at least two shutter apertures.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: August 5, 2003
    Assignees: Jenoptik Laser, Optik, Systeme GmbH, Hilti Aktiengesellschaft
    Inventors: Helmut Seifert, Gero Schusser, Ullrich Krüger, Martin Penzold
  • Patent number: 6522412
    Abstract: When a scanning start position set signal is input in an area image sensor, the content is transferred to a vertical scanning circuit, and the scan start position is set. Image of a desired row is read by horizontal scanning. Then, one shift signal for vertical scanning is input, the position of scanning is shifted by one row, and horizontal scanning is performed. Thus image of the next row is read. By repeating this operation, a desired strip-shaped image is read. The shape of the object is determined and when a portion is determined to have complicated shape, the image data is input by means of a lens having long focal length, and image data of other portions are input by means of a lens having short focal length. By putting together a plurality of input image data, image data as a whole is generated.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: February 18, 2003
    Assignee: Minolta Co., Ltd.
    Inventors: Toshio Norita, Makoto Miyazaki, Eiro Fujii, Shigeaki Imai, Fumiya Yagi, Satoru Hirose
  • Patent number: 6480288
    Abstract: When a scanning start position set signal is input in an area image sensor, the content is transferred to a vertical scanning circuit, and the scan start position is set. Image of a desired row is read by horizontal scanning. Then, one shift signal for vertical scanning is input, the position of scanning is shifted by one row, and horizontal scanning is performed. Thus image of the next row is read. By repeating this operation, a desired strip-shaped image is read. The shape of the object is determined and when a portion is determined to have complicated shape, the image data is input by means of a lens having long focal length, and image data of other portions are input by means of a lens having short focal length. By putting together a plurality of input image data, image data as a whole is generated.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: November 12, 2002
    Assignee: Minolta Co., Ltd.
    Inventors: Eiro Fujii, Shigeaki Imai, Toshio Norita
  • Patent number: 6466305
    Abstract: This application is concerned with laser triangulation sensors for object dimension and position determination, and in particular, more effective measurement of object shapes and/or thickness using laser triangulation sensors having multiple projected laser beams and at least two linear or matrix array cameras to view the images of light reflected from the object due to the beams impinging on the object surface. Besides disclosure of the basic operation of “multi-point” sensors of this type, novel methods and apparatus are also disclosed to assure function of the device even with objects, such as lumber, having pronounced protrusions and depressions in their surface.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: October 15, 2002
    Assignee: LMI Technologies Inc.
    Inventor: Richard McBain
  • Patent number: 6433858
    Abstract: An autofocusing apparatus of a telescope for automatically focusing on an object viewed within a field of view of the telescope through a distance-measuring zone arranged in the field of view, includes: a multi-point distance measuring device which divides the distance-measuring zone into at least three distance-measuring zones to detect an object distance on each of the distance-measuring zones; a lens driver which drives a focusing lens group of the telescope along an optical axis thereof; and a controller which controls the lens driver wherein the focusing lens group is moved to perform an autofocusing operation in accordance with a result of the each object distance detected by the multi-point distance measuring zones. The controller compares the each object distance detected by the multi-point distance measuring device with each other.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: August 13, 2002
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Shinichi Suzuki
  • Patent number: 6411782
    Abstract: A pair of integration-type light-receiving sensors receive the light from subjects and produce a subject image signal. A light projecting section projects light onto the subjects. A steady-state light removing section obtains an image signal by removing the steady-state light component from the subject image signal the pair of integration-type light-receiving sensors produces, while the light projecting section is projecting light onto the subjects. A first distance-measuring section measures a subject distance on the basis of the subject image signal from the pair of integration-type sensors. A subject position estimating section causes the first distance-measuring section to make distance measurements for a specific time and, on the basis of the resulting reflected light image signal, estimates the position of the main subject.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: June 25, 2002
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Takeshi Kindaichi
  • Patent number: 6407817
    Abstract: When a scanning start position set signal is input in an area image sensor, the content is transferred to a vertical scanning circuit, and the scan start position is set. Image of a desired row is read by horizontal scanning. Then, one shift signal for vertical scanning is input, the position of scanning is shifted by one row, and horizontal scanning is performed. Thus image of the next row is read. By repeating this operation, a desired strip-shaped image is read. The shape of the object is determined and when a portion is determined to have complicated shape, the image data is input by means of a lens having long focal length, and image data of other portions are input by means of a lens having short focal length. By putting together a plurality of input image data, image data as a whole is generated.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: June 18, 2002
    Assignee: Minolta Co., Ltd.
    Inventors: Toshio Norita, Fumiya Yagi, Satoru Hirose
  • Patent number: 6407802
    Abstract: A multi-point distance measuring apparatus has a plurality of distance measuring points for performing a multi-point distance measurement. Sensor arrays detect an image pattern at each distance measuring point in the picture. A control circuit determines a distance measuring mode for each distance measuring point, based upon the output signal of the sensor arrays.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: June 18, 2002
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Osamu Nonaka
  • Patent number: 6355924
    Abstract: Photoelectric cell with means of configuring the operating mode. The cell has several optosensitive zones 11, 12, D capable of outputting magnitudes that are activated or processed in different manners, by configuration and/or processing means 7, 19. The cell may thus be used in reflex mode, proximity mode or proximity with background elimination mode. Amplifying parts 16a, 16b are provided at the side of the optosensitive zones to amplify electrical magnitudes before routing them to the microcontroller 19 in the processing circuit 6.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: March 12, 2002
    Assignee: Schneider Electric SA
    Inventors: Stéphane Even, Alain Guillot