DE69207941D1 - Optischer Enkoder mit verbessertem Index - Google Patents

Optischer Enkoder mit verbessertem Index

Info

Publication number
DE69207941D1
DE69207941D1 DE69207941T DE69207941T DE69207941D1 DE 69207941 D1 DE69207941 D1 DE 69207941D1 DE 69207941 T DE69207941 T DE 69207941T DE 69207941 T DE69207941 T DE 69207941T DE 69207941 D1 DE69207941 D1 DE 69207941D1
Authority
DE
Germany
Prior art keywords
optical encoder
improved index
index
improved
encoder
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
DE69207941T
Other languages
English (en)
Other versions
DE69207941T2 (de
Inventor
Akihiro Machida
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.)
Avago Technologies International Sales Pte Ltd
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 DE69207941D1 publication Critical patent/DE69207941D1/de
Application granted granted Critical
Publication of DE69207941T2 publication Critical patent/DE69207941T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/36—Forming the light into pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Analogue/Digital Conversion (AREA)
DE69207941T 1991-04-17 1992-04-16 Optischer Enkoder mit verbessertem Index Expired - Lifetime DE69207941T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/686,677 US5148020A (en) 1991-04-17 1991-04-17 Optical encoder with photodetectors of width equal to and one-half of code wheel's window and spoke width

Publications (2)

Publication Number Publication Date
DE69207941D1 true DE69207941D1 (de) 1996-03-14
DE69207941T2 DE69207941T2 (de) 1996-06-05

Family

ID=24757286

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69207941T Expired - Lifetime DE69207941T2 (de) 1991-04-17 1992-04-16 Optischer Enkoder mit verbessertem Index

Country Status (4)

Country Link
US (1) US5148020A (de)
EP (1) EP0509828B1 (de)
JP (1) JP3366347B2 (de)
DE (1) DE69207941T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5324934A (en) * 1991-05-01 1994-06-28 Megamation Incorporated Fiberoptic encoder for linear motors and the like
US5557450A (en) * 1994-01-04 1996-09-17 Primax Electronics Ltd. Optical rotation encoder for X-Y direction input device
JPH08213447A (ja) * 1995-02-06 1996-08-20 Tokyo Electron Ltd 被移載体の検出装置
US5640007A (en) * 1995-06-21 1997-06-17 Limitorque Corporation Optical encoder comprising a plurality of encoder wheels
JPH09222435A (ja) * 1995-12-11 1997-08-26 Nippon Signal Co Ltd:The 回転停止センサ
US5982551A (en) * 1998-09-25 1999-11-09 Wang; Ching-Shun Optical encoder wheel with split lens ring
US6069464A (en) * 1998-10-01 2000-05-30 Umax Data Systems Inc. Driving apparatus for an image processing system
US6281490B1 (en) * 1999-03-04 2001-08-28 Continental Teves, Inc. Method and device for generating distinguishable signals and method of distinguishing signals of similar shape
US6396052B1 (en) 2000-04-07 2002-05-28 Lexmark International, Inc. High precision analog encoder system
US6653619B2 (en) 2000-09-15 2003-11-25 Agilent Technologies, Inc. Optical motion encoder with a reflective member allowing the light source and sensor to be on the same side
DE102005053560B4 (de) * 2005-01-14 2012-07-12 Novoferm Tormatic Gmbh Elektromechanischer Antrieb für ein Tor oder dergleichen
US7211786B1 (en) * 2006-03-16 2007-05-01 Avago Technologies General Ip (Singapore) Pte. Ltd. Reflective linear encoder having controlled detector to code strip distance
FR2937129B1 (fr) * 2008-10-10 2012-11-16 Thales Sa Codeur optique
US8097842B2 (en) * 2009-05-31 2012-01-17 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. High resolution single track optical encoder
US8525102B2 (en) * 2011-02-15 2013-09-03 Avago Technologies General Ip (Singapore) Pte. Ltd. Optical encoding system and optical encoder having an array of incremental photodiodes and an index photodiode for use in an optical encoding system
US9354087B2 (en) 2013-01-09 2016-05-31 Avago Technologies General Ip (Singapore) Pte. Ltd. Single track three-channel encoder with differential index
EP3276680A1 (de) * 2017-01-25 2018-01-31 Siemens Schweiz AG Optische rauchdetektion nach dem zweifarben-prinzip mittels einer leuchtdiode mit einem led-chip zur lichtemission und mit einem lichtkonverter zum umwandeln eines teils des emittierten lichts in langwelligeres licht

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266125A (en) * 1978-12-21 1981-05-05 Hewlett-Packard Company Optical shaft angle encoder
US4654525A (en) * 1982-08-31 1987-03-31 Sharp Kabushiki Kaisha Optical rotary encoder
US4691101A (en) * 1985-06-19 1987-09-01 Hewlett-Packard Company Optical positional encoder comprising immediately adjacent detectors
JPS6255511A (ja) * 1985-09-05 1987-03-11 Sharp Corp ロ−タリ−エンコ−ダ
DE3616144A1 (de) * 1986-05-14 1987-11-19 Heidenhain Gmbh Dr Johannes Fotoelektrische messeinrichtung

Also Published As

Publication number Publication date
EP0509828A2 (de) 1992-10-21
EP0509828B1 (de) 1996-01-31
EP0509828A3 (en) 1993-05-12
JP3366347B2 (ja) 2003-01-14
JPH05141987A (ja) 1993-06-08
DE69207941T2 (de) 1996-06-05
US5148020A (en) 1992-09-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AGILENT TECHNOLOGIES, INC. (N.D.GES.D.STAATES DELA

8327 Change in the person/name/address of the patent owner

Owner name: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.,

8328 Change in the person/name/address of the agent

Representative=s name: DILG HAEUSLER SCHINDELMANN PATENTANWALTSGESELLSCHA