WO2011094762A3 - Multiple synchronized optical sources for time-of-flight range finding systems - Google Patents

Multiple synchronized optical sources for time-of-flight range finding systems Download PDF

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Publication number
WO2011094762A3
WO2011094762A3 PCT/US2011/023413 US2011023413W WO2011094762A3 WO 2011094762 A3 WO2011094762 A3 WO 2011094762A3 US 2011023413 W US2011023413 W US 2011023413W WO 2011094762 A3 WO2011094762 A3 WO 2011094762A3
Authority
WO
WIPO (PCT)
Prior art keywords
pwoe
woe
emitted
optical energy
optical
Prior art date
Application number
PCT/US2011/023413
Other languages
French (fr)
Other versions
WO2011094762A2 (en
Inventor
Cyrus Bamji
Original Assignee
Microsoft Corporation
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 Microsoft Corporation filed Critical Microsoft Corporation
Priority to EP11737875.2A priority Critical patent/EP2531812B1/en
Priority to CN201180007792.XA priority patent/CN102741651B/en
Priority to CA2786626A priority patent/CA2786626C/en
Priority to JP2012552046A priority patent/JP5898631B2/en
Priority to KR1020127020213A priority patent/KR101804590B1/en
Publication of WO2011094762A2 publication Critical patent/WO2011094762A2/en
Publication of WO2011094762A3 publication Critical patent/WO2011094762A3/en
Priority to IL220786A priority patent/IL220786A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
    • G01S7/4815—Constructional features, e.g. arrangements of optical elements of transmitters alone using multiple transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/491—Details of non-pulse systems
    • G01S7/4911—Transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S17/36—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

TOF system optical power is augmented using auxiliary optical emitter unit(s) that may be wireless (WOE), or plug-wired (PWOE). WOE units sense emitted TOF system optical energy Sout and emit optical energy Sout-n preferably dynamically synchronized in frequency and in phase to Sout as received by WOE. Each WOE includes at least one optical sensor to detect Sout, and internal feedback ensuring that frequency and phase of WOE emitted Sout-n optical energy are dynamically synchronized with frequency and phase of TOF emitted Sout optical energy. PWOE units need no internal feedback but are calibrated by TOF system to cause a close match between frequency and phase of the PWOE-emitted optical energy with what would be emitted by the TOF system primary optical source. If PWOE(s) are used in isolation, delay difference between PWOE and the TOF primary optical energy source can be software-compensated.
PCT/US2011/023413 2010-02-01 2011-02-01 Multiple synchronized optical sources for time-of-flight range finding systems WO2011094762A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP11737875.2A EP2531812B1 (en) 2010-02-01 2011-02-01 Multiple synchronized optical sources for time-of-flight range finding systems
CN201180007792.XA CN102741651B (en) 2010-02-01 2011-02-01 Multiple synchronized optical sources for time-of-flight range finding systems
CA2786626A CA2786626C (en) 2010-02-01 2011-02-01 Multiple synchronized optical sources for time-of-flight range finding systems
JP2012552046A JP5898631B2 (en) 2010-02-01 2011-02-01 Multiple synchronized light sources for time-of-flight range detection systems
KR1020127020213A KR101804590B1 (en) 2010-02-01 2011-02-01 Multiple synchronized optical sources for time-of-flight range finding systems
IL220786A IL220786A (en) 2010-02-01 2012-07-05 Multiple synchronized optical sources for time-of-flight range finding systems

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US33731510P 2010-02-01 2010-02-01
US61/337,315 2010-02-01
US13/018,293 2011-01-31
US13/018,293 US8891067B2 (en) 2010-02-01 2011-01-31 Multiple synchronized optical sources for time-of-flight range finding systems

Publications (2)

Publication Number Publication Date
WO2011094762A2 WO2011094762A2 (en) 2011-08-04
WO2011094762A3 true WO2011094762A3 (en) 2011-11-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/023413 WO2011094762A2 (en) 2010-02-01 2011-02-01 Multiple synchronized optical sources for time-of-flight range finding systems

Country Status (8)

Country Link
US (2) US8891067B2 (en)
EP (1) EP2531812B1 (en)
JP (1) JP5898631B2 (en)
KR (1) KR101804590B1 (en)
CN (1) CN102741651B (en)
CA (1) CA2786626C (en)
IL (1) IL220786A (en)
WO (1) WO2011094762A2 (en)

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US8891067B2 (en) * 2010-02-01 2014-11-18 Microsoft Corporation Multiple synchronized optical sources for time-of-flight range finding systems
KR101975971B1 (en) 2012-03-19 2019-05-08 삼성전자주식회사 Depth camera, multi-depth camera system, and synchronizing method thereof
KR101925028B1 (en) * 2012-08-29 2018-12-04 엘지전자 주식회사 Apparatus and method of generating depth image
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US9578311B2 (en) * 2014-10-22 2017-02-21 Microsoft Technology Licensing, Llc Time of flight depth camera
US10048357B2 (en) * 2015-06-15 2018-08-14 Microsoft Technology Licensing, Llc Time-of-flight (TOF) system calibration
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JP2018031607A (en) 2016-08-23 2018-03-01 ソニーセミコンダクタソリューションズ株式会社 Distance measuring device, electronic device, and method for controlling distance measuring device
DE102018113630B4 (en) 2017-06-08 2022-06-23 Ifm Electronic Gmbh Distance measuring system with at least two lighting modules
DE102018113629B4 (en) 2017-06-08 2024-01-11 Ifm Electronic Gmbh Distance measuring system with at least two lighting modules
CN107515403A (en) * 2017-08-21 2017-12-26 东莞市迈科新能源有限公司 A kind of TOF three-dimensionals distance measuring sensor
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US10649410B2 (en) * 2017-10-06 2020-05-12 Thomas Broussard High resolution time-of-flight measurements
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