DE3306790C2 - - Google Patents

Info

Publication number
DE3306790C2
DE3306790C2 DE3306790A DE3306790A DE3306790C2 DE 3306790 C2 DE3306790 C2 DE 3306790C2 DE 3306790 A DE3306790 A DE 3306790A DE 3306790 A DE3306790 A DE 3306790A DE 3306790 C2 DE3306790 C2 DE 3306790C2
Authority
DE
Germany
Prior art keywords
light beam
emitter
light
encoder
slot
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 - Lifetime
Application number
DE3306790A
Other languages
German (de)
English (en)
Other versions
DE3306790A1 (de
Inventor
James R. Palo Alto Calif. Us Casciani
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE3306790A1 publication Critical patent/DE3306790A1/de
Application granted granted Critical
Publication of DE3306790C2 publication Critical patent/DE3306790C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F30/00—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors
    • H10F30/20—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors
    • 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
    • G01D5/32—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 attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
DE19833306790 1982-03-05 1983-02-26 Lichtquelle Granted DE3306790A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/355,002 US4508965A (en) 1982-03-05 1982-03-05 Uniaxially collimated light source for optical shaft angle encoders

Publications (2)

Publication Number Publication Date
DE3306790A1 DE3306790A1 (de) 1983-09-15
DE3306790C2 true DE3306790C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-04-30

Family

ID=23395848

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833306790 Granted DE3306790A1 (de) 1982-03-05 1983-02-26 Lichtquelle

Country Status (3)

Country Link
US (1) US4508965A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS58165384A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3306790A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511474A1 (de) * 1994-03-31 1995-10-05 Siemens Comp Inc Optischer Kodierer
DE19510726A1 (de) * 1994-03-31 1995-10-05 Siemens Comp Inc Verfahren zur Ausrichtung eines Lichtweges bei einer Optikeinrichtung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444878A1 (de) * 1984-12-08 1986-06-12 Bodenseewerk Gerätetechnik GmbH, 7770 Überlingen Abtastkopf fuer schrittgeber, insbesondere winkelschrittgeber
GB2194635B (en) * 1986-03-14 1991-01-02 Mitutoyo Mfg Co Ltd Photoelectric type displacement detecting instrument
US4660242A (en) * 1986-03-24 1987-04-28 International Shoe Machine Corporation Activator
US4952799A (en) * 1989-03-10 1990-08-28 Hewlett-Packard Company Reflective shaft angle encoder
US7244928B2 (en) * 2005-01-07 2007-07-17 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Optical encoder
CN112304252B (zh) * 2020-10-30 2022-03-22 维沃移动通信有限公司 折叠角度确定方法、折叠设备及电子设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808447A (en) * 1971-05-28 1974-04-30 Wilkata Codes Inc Photoelectric scanning device using diffuse and specular reflection
US3999064A (en) * 1975-01-09 1976-12-21 The Brunton Company Angular displacement measuring apparatus with strobe means
US4319134A (en) * 1978-06-16 1982-03-09 Sensor Technology, Inc. Optical encoder
DE2848612C2 (de) * 1978-11-09 1981-05-27 Pfaff Haushaltsmaschinen GmbH, 7500 Karlsruhe Impulsgeber eines Nähmaschinenantriebes
US4263506A (en) * 1978-12-21 1981-04-21 Hewlett-Packard Company Pulse generating apparatus
US4266125A (en) * 1978-12-21 1981-05-05 Hewlett-Packard Company Optical shaft angle encoder
JPS56151311A (en) * 1980-04-25 1981-11-24 Hitachi Ltd Detecting device for rotary angle
US4385234A (en) * 1980-11-25 1983-05-24 Bei Electronics, Inc. Optical systems for optical encoders

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511474A1 (de) * 1994-03-31 1995-10-05 Siemens Comp Inc Optischer Kodierer
DE19510726A1 (de) * 1994-03-31 1995-10-05 Siemens Comp Inc Verfahren zur Ausrichtung eines Lichtweges bei einer Optikeinrichtung
DE19510726C2 (de) * 1994-03-31 2002-06-27 Siemens Microelectronics Inc Verfahren zur Ausrichtung eines Lichtweges bei einer Optikeinrichtung

Also Published As

Publication number Publication date
US4508965A (en) 1985-04-02
DE3306790A1 (de) 1983-09-15
JPS58165384A (ja) 1983-09-30

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: BOEHMERT, A., DIPL.-ING., PAT.-ANW. STAHLBERG, W.,

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee