WO2010001299A3 - Self-mixing reflective sensor - Google Patents
Self-mixing reflective sensor Download PDFInfo
- 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
Links
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/0304—Detection arrangements using opto-electronic means
- G06F3/0317—Detection 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
-
- 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
- G01D5/266—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 by interferometric means
-
- 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
- G01D5/28—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 with deflection of beams of light, e.g. for direct optical indication
- G01D5/30—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 with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/0304—Detection arrangements using opto-electronic means
- G06F3/0312—Detection 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.
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)
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)
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 |
-
2009
- 2009-06-23 WO PCT/IB2009/052684 patent/WO2010001299A2/en active Application Filing
Patent Citations (2)
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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