GB1536022A - Measurement of position using an array of photosensitive elements - Google Patents

Measurement of position using an array of photosensitive elements

Info

Publication number
GB1536022A
GB1536022A GB142076A GB142076A GB1536022A GB 1536022 A GB1536022 A GB 1536022A GB 142076 A GB142076 A GB 142076A GB 142076 A GB142076 A GB 142076A GB 1536022 A GB1536022 A GB 1536022A
Authority
GB
United Kingdom
Prior art keywords
array
photo
outputs
edge
serves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB142076A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Integrated Photomatrix Ltd
Original Assignee
Integrated Photomatrix Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Integrated Photomatrix Ltd filed Critical Integrated Photomatrix Ltd
Priority to GB142076A priority Critical patent/GB1536022A/en
Publication of GB1536022A publication Critical patent/GB1536022A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Image Analysis (AREA)

Abstract

1536022 Position measuring using an array of photo-sensitive elements INTEGRATED PHOTOMATRIX Ltd 10 Jan 1977 [14 January 1976 (2)] 01420/76 and 01450/76 Heading G1A In an apparatus for measuring the position x of the 'centre of gravity' of a zone of high or low illumination, in a field of contrasting illumination, or, for measuring the position of an edge between regions of contrasting illuminations, the zone or edge is imaged on an array 1 of photo-sensitive elements. The analogue outputs I 1 , I 2 .... I n of the photo-sensitive elements are then electrically processed according to a summation Formula which may be:- to get the position x. The photodiode array 1 is connected to a video processor 2 which serves to process the chargepulse output of the array to provide a 'box car' video signal. The video signal from the processor 2 is fed to each of six sample-and-hold units 3 controlled by digital circuitry, Fig. 4 (not shown). On command by the digital circuitry, each of the units 3 samples and holds a respective one of the outputs In of six consecutive diodes of the array centred on an origin diode n o and covering the image of the light source or spanning the edge (in which case the outputs are differentiated first). The outputs of the units 3 are summed in two summing networks 4 and 5. The first summing network 4 comprises input resistors 6 of equal value and serves to evaluate the sum # I n . The second summing network 4 comprises 7 of weighted values and serves to evaluate the sum #nI n . The outputs of the summing networks 4 and 5 are divided as in the above Formula in a converter 8 which has an output that is a binary number representing the fraction of the diode pitch by which the centre of the image or edge is displaced from the position of the origin diode no . Alternatively the video signal may be processed to find the photo-sensitive element which is nearest to the predetermined point of the image or edge and then calculate the position x relative to the 'nearest' photo-sensitive element.
GB142076A 1977-01-10 1977-01-10 Measurement of position using an array of photosensitive elements Expired GB1536022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB142076A GB1536022A (en) 1977-01-10 1977-01-10 Measurement of position using an array of photosensitive elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB142076A GB1536022A (en) 1977-01-10 1977-01-10 Measurement of position using an array of photosensitive elements

Publications (1)

Publication Number Publication Date
GB1536022A true GB1536022A (en) 1978-12-13

Family

ID=9721715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB142076A Expired GB1536022A (en) 1977-01-10 1977-01-10 Measurement of position using an array of photosensitive elements

Country Status (1)

Country Link
GB (1) GB1536022A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021451A1 (en) * 1979-07-02 1981-01-07 Western Electric Company, Incorporated Apparatus for detecting relative motion
DE3033260A1 (en) * 1979-09-07 1981-03-26 Diffracto Ltd., Windsor, Ontario DEVICE AND METHOD FOR CONTROLLING WORKPIECES
FR2526936A1 (en) * 1982-05-11 1983-11-18 Sangamo Weston Non-contacting workpiece gauging system - uses radiant energy beam projected such that illuminated spot moves along workpiece surface relative to reference
DE3731531A1 (en) * 1986-09-20 1988-04-07 Fraunhofer Ges Forschung Method for extending the resolution of a line camera or matrix camera
FR2647897A1 (en) * 1989-05-30 1990-12-07 Pirelli Cavi Spa Method and optical sensor for determining the position of a moving body
DE4308082A1 (en) * 1993-03-13 1994-09-15 Gerhard Dr Kleemann Method and device for the optical measurement of objects in a plane
US5362970A (en) * 1979-04-30 1994-11-08 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
DE19610941A1 (en) * 1996-03-20 1997-09-25 Zeiss Carl Jena Gmbh Two-axis inclination meter with housing containing transparent liquid for horizon
US6094269A (en) 1997-12-31 2000-07-25 Metroptic Technologies, Ltd. Apparatus and method for optically measuring an object surface contour
EP1111332A2 (en) * 1999-12-23 2001-06-27 Sick AG Method for the detection of the position of a light spot on a photodiode array
EP1189072A2 (en) * 2000-09-19 2002-03-20 Jena-Optronik GmbH Device for determining the angle of incidence of light

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5981965A (en) * 1979-04-30 1999-11-09 Lmi-Diffracto Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5693953A (en) * 1979-04-30 1997-12-02 Sensor Adaptive Machines, Inc. Method and apparatus for electro optically determining the dimension, location and attitude of objects
US5773840A (en) * 1979-04-30 1998-06-30 Sensor Adaptive Machines Inc. Method & apparatus for electro optically determining the dimension, location & attitude of objects
US5786602A (en) * 1979-04-30 1998-07-28 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US6211506B1 (en) 1979-04-30 2001-04-03 Diffracto, Ltd. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US6127689A (en) * 1979-04-30 2000-10-03 Diffracto Ltd. Method and apparatus for positioning a member relative to an object surface
US5362970A (en) * 1979-04-30 1994-11-08 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5510625A (en) * 1979-04-30 1996-04-23 Sensor Adaptive Machines Inc. Method and apparatus for electro optically determining the dimension, location and attitude of objects
US5670787A (en) * 1979-04-30 1997-09-23 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5877491A (en) * 1979-04-30 1999-03-02 Sensor Adaptive Machines, Inc. Method and apparatus for imaging an object illuminated with light
US5677541A (en) * 1979-04-30 1997-10-14 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5684292A (en) * 1979-04-30 1997-11-04 Sensor Adaptive Machines, Inc. Method and apparatus for electro optically determining the dimension location and attitude of objects
US5691545A (en) * 1979-04-30 1997-11-25 Sensor Adaptive Machines Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5880459A (en) * 1979-04-30 1999-03-09 Sensor Adaptive Machines, Inc. Method and apparatus for control of a detector array based imaging
US5734172A (en) * 1979-04-30 1998-03-31 Sensor Adaptive Machines Inc. Method and apparatus for electro optically determining the dimension, location and attitude of objects
US5767525A (en) * 1979-04-30 1998-06-16 Sensor Adaptive Machines Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5866915A (en) * 1979-04-30 1999-02-02 Sensor Adaptive Machines, Inc. Method and apparatus for electro optically determining the dimension, location and attitude of objects
US5811827A (en) * 1979-04-30 1998-09-22 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5866916A (en) * 1979-04-30 1999-02-02 Sensor Adaptive Machines, Inc. Method and apparatus for electro optically determining the dimension, location and attitude of objects
US5811825A (en) * 1979-04-30 1998-09-22 Sensor Adaptive Machines, Inc. Method and apparatus for electro-optically determining the dimension, location and attitude of objects
US5883390A (en) * 1979-04-30 1999-03-16 Sensor Adaptive Machines, Inc. Method and apparatus for positioning a member in a desired attitude relative to the surface of an object
US5854491A (en) * 1979-04-30 1998-12-29 Sensor Adaptive Machines, Inc. Method and apparatus for electro optically determining the dimension, location and attitude of objects
EP0021451A1 (en) * 1979-07-02 1981-01-07 Western Electric Company, Incorporated Apparatus for detecting relative motion
DE3033260A1 (en) * 1979-09-07 1981-03-26 Diffracto Ltd., Windsor, Ontario DEVICE AND METHOD FOR CONTROLLING WORKPIECES
FR2526936A1 (en) * 1982-05-11 1983-11-18 Sangamo Weston Non-contacting workpiece gauging system - uses radiant energy beam projected such that illuminated spot moves along workpiece surface relative to reference
DE3731531A1 (en) * 1986-09-20 1988-04-07 Fraunhofer Ges Forschung Method for extending the resolution of a line camera or matrix camera
FR2647897A1 (en) * 1989-05-30 1990-12-07 Pirelli Cavi Spa Method and optical sensor for determining the position of a moving body
DE4308082A1 (en) * 1993-03-13 1994-09-15 Gerhard Dr Kleemann Method and device for the optical measurement of objects in a plane
DE19610941C2 (en) * 1996-03-20 1998-10-15 Zeiss Carl Jena Gmbh Biaxial inclinometer and method for inclination measurement
DE19610941A1 (en) * 1996-03-20 1997-09-25 Zeiss Carl Jena Gmbh Two-axis inclination meter with housing containing transparent liquid for horizon
US6094269A (en) 1997-12-31 2000-07-25 Metroptic Technologies, Ltd. Apparatus and method for optically measuring an object surface contour
EP1111332A2 (en) * 1999-12-23 2001-06-27 Sick AG Method for the detection of the position of a light spot on a photodiode array
DE19962701A1 (en) * 1999-12-23 2001-06-28 Sick Ag Method for determining the position of a light spot on a row of photodiodes
EP1111332B1 (en) * 1999-12-23 2005-10-19 Sick AG Method for the detection of the position of a light spot on a photodiode array
EP1189072A2 (en) * 2000-09-19 2002-03-20 Jena-Optronik GmbH Device for determining the angle of incidence of light
EP1189072A3 (en) * 2000-09-19 2004-11-10 Jena-Optronik GmbH Device for determining the angle of incidence of light

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Legal Events

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee