WO2010001299A3 - Self-mixing reflective sensor - Google Patents

Self-mixing reflective sensor Download PDF

Info

Publication number
WO2010001299A3
WO2010001299A3 PCT/IB2009/052684 IB2009052684W WO2010001299A3 WO 2010001299 A3 WO2010001299 A3 WO 2010001299A3 IB 2009052684 W IB2009052684 W IB 2009052684W WO 2010001299 A3 WO2010001299 A3 WO 2010001299A3
Authority
WO
WIPO (PCT)
Prior art keywords
self
mixing
reflective sensor
mixing reflective
signal
Prior art date
Application number
PCT/IB2009/052684
Other languages
French (fr)
Other versions
WO2010001299A2 (en
Inventor
Meng HAN
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N.V.
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 Philips Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N.V. filed Critical Philips Intellectual Property & Standards Gmbh
Publication of WO2010001299A2 publication Critical patent/WO2010001299A2/en
Publication of WO2010001299A3 publication Critical patent/WO2010001299A3/en

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/0304Detection arrangements using opto-electronic means
    • G06F3/0317Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING 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
    • G01D5/00Mechanical 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
    • G01D5/26Mechanical 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
    • G01D5/266Mechanical 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 by interferometric means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING 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
    • G01D5/00Mechanical 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
    • G01D5/26Mechanical 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
    • G01D5/28Mechanical 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 with deflection of beams of light, e.g. for direct optical indication
    • G01D5/30Mechanical 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 with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42Devices characterised by the use of electric or magnetic means
    • G01P3/44Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/486Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/0304Detection arrangements using opto-electronic means
    • G06F3/0312Detection arrangements using opto-electronic means for tracking the rotation of a spherical or circular member, e.g. optical rotary encoders used in mice or trackballs using a tracking ball or in mouse scroll wheels

Abstract

The invention relates to a self-mixing reflective sensor, preferably VCSEL-based, which does not require a separate photodetector nor complicated signal- processing circuitry. The measurement principle is based on a detection of the self- mixing oscillation amplitude rather than the oscillation frequency of the self-mixing signal.
PCT/IB2009/052684 2008-06-30 2009-06-23 Self-mixing reflective sensor WO2010001299A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08104584.1 2008-06-30
EP08104584 2008-06-30

Publications (2)

Publication Number Publication Date
WO2010001299A2 WO2010001299A2 (en) 2010-01-07
WO2010001299A3 true WO2010001299A3 (en) 2010-10-07

Family

ID=41466385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/052684 WO2010001299A2 (en) 2008-06-30 2009-06-23 Self-mixing reflective sensor

Country Status (1)

Country Link
WO (1) WO2010001299A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2598909B1 (en) 2010-07-26 2017-01-04 Koninklijke Philips N.V. Apparatus for measuring a distance
US8926143B2 (en) 2013-03-13 2015-01-06 Corning Incorporated Light-diffusing elements
US11157113B2 (en) 2018-04-13 2021-10-26 Apple Inc. Self-mixing interference based sensors for characterizing touch input
US20190317454A1 (en) 2018-04-13 2019-10-17 Apple Inc. Coherent Mixing Interference Based Sensors for Characterizing Movement of a Watch Crown
US10627961B2 (en) 2018-09-25 2020-04-21 Apple Inc. Waveguide-based interferometric multi-point/distributed force and touch sensors
US10824275B2 (en) 2018-09-25 2020-11-03 Apple Inc. Waveguide-based interferometric multi-point/distributed force and touch sensors
US11740071B2 (en) 2018-12-21 2023-08-29 Apple Inc. Optical interferometry proximity sensor with temperature variation compensation
US11674825B2 (en) 2021-09-21 2023-06-13 Apple Inc. Cylindrical retroreflector array for rotation tracking

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060284743A1 (en) * 2005-06-17 2006-12-21 Microsoft Corporation Input detection based on speckle-modulated laser self-mixing
US20070102523A1 (en) * 2005-11-08 2007-05-10 Microsoft Corporation Laser velocimetric image scanning

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060284743A1 (en) * 2005-06-17 2006-12-21 Microsoft Corporation Input detection based on speckle-modulated laser self-mixing
US20070102523A1 (en) * 2005-11-08 2007-05-10 Microsoft Corporation Laser velocimetric image scanning

Also Published As

Publication number Publication date
WO2010001299A2 (en) 2010-01-07

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