GB9812912D0 - Focusing-type calculating means - Google Patents

Focusing-type calculating means

Info

Publication number
GB9812912D0
GB9812912D0 GBGB9812912.5A GB9812912A GB9812912D0 GB 9812912 D0 GB9812912 D0 GB 9812912D0 GB 9812912 A GB9812912 A GB 9812912A GB 9812912 D0 GB9812912 D0 GB 9812912D0
Authority
GB
United Kingdom
Prior art keywords
focusing
calculating means
type calculating
type
calculating
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.)
Withdrawn
Application number
GBGB9812912.5A
Other versions
GB2338549A (en
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.)
Individual
Original Assignee
Individual
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
Priority to CA002236772A priority Critical patent/CA2236772C/en
Priority to DE19826009A priority patent/DE19826009C2/en
Priority to FR9807290A priority patent/FR2779815A1/en
Application filed by Individual filed Critical Individual
Priority to GB9812912A priority patent/GB2338549A/en
Publication of GB9812912D0 publication Critical patent/GB9812912D0/en
Publication of GB2338549A publication Critical patent/GB2338549A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
    • H03M1/301—Constructional details of parts relevant to the encoding mechanism, e.g. pattern carriers, pattern sensors
    • 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
    • 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
    • G01D5/38—Forming the light into pulses by diffraction gratings
GB9812912A 1998-06-02 1998-06-15 A Rotary Encoder Withdrawn GB2338549A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002236772A CA2236772C (en) 1998-06-02 1998-06-02 Focusing-type calculating means
DE19826009A DE19826009C2 (en) 1998-06-02 1998-06-10 Optical encoder
FR9807290A FR2779815A1 (en) 1998-06-02 1998-06-10 Non-interference rotary encoder
GB9812912A GB2338549A (en) 1998-06-02 1998-06-15 A Rotary Encoder

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002236772A CA2236772C (en) 1998-06-02 1998-06-02 Focusing-type calculating means
DE19826009A DE19826009C2 (en) 1998-06-02 1998-06-10 Optical encoder
FR9807290A FR2779815A1 (en) 1998-06-02 1998-06-10 Non-interference rotary encoder
GB9812912A GB2338549A (en) 1998-06-02 1998-06-15 A Rotary Encoder

Publications (2)

Publication Number Publication Date
GB9812912D0 true GB9812912D0 (en) 1998-08-12
GB2338549A GB2338549A (en) 1999-12-22

Family

ID=32966513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9812912A Withdrawn GB2338549A (en) 1998-06-02 1998-06-15 A Rotary Encoder

Country Status (4)

Country Link
CA (1) CA2236772C (en)
DE (1) DE19826009C2 (en)
FR (1) FR2779815A1 (en)
GB (1) GB2338549A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101514909B (en) * 2008-02-22 2011-07-27 鸿富锦精密工业（深圳）有限公司 Optical code disc and corresponding optical encoder
CN101709982B (en) * 2009-11-05 2011-06-15 无锡鑫亚电子有限公司 Rotary encoder

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR77221E (en) * 1960-02-23 1962-02-02 Levallois Optique Et Prec Photoelectric camera for checking or controlling positions
GB991873A (en) * 1961-12-04 1965-05-12 Hensoldt & Soehne Optik Equipment for indicating the amount of the displacement of a moving part
DE2543668A1 (en) * 1974-10-10 1976-04-22 Papst Motoren Kg INCREMENTALLY ADJUSTABLE DRIVE
GB2049165A (en) * 1979-05-08 1980-12-17 Pye Ltd Dual beam spectrophotometer
US4528448A (en) * 1982-05-13 1985-07-09 Benson, Inc. Plane linear grating for optically encoding information
JPS5963517A (en) * 1982-10-04 1984-04-11 Nippon Kogaku Kk <Nikon> Photoelectric encoder
JPS6070311A (en) * 1983-09-27 1985-04-22 Mitsubishi Electric Corp Optical type encoder
JPH087082B2 (en) * 1990-09-05 1996-01-29 松下電器産業株式会社 Optical encoder
JP3170902B2 (en) * 1992-09-30 2001-05-28 キヤノン株式会社 Signal processing method and encoder using the same
JPH08201114A (en) * 1995-01-24 1996-08-09 Matsushita Electric Ind Co Ltd Optical encoder
JPH10239108A (en) * 1997-02-21 1998-09-11 Fanuc Ltd Optical encoder

Also Published As

Publication number Publication date
DE19826009A1 (en) 1999-12-16
CA2236772C (en) 2003-07-29
FR2779815A1 (en) 1999-12-17
CA2236772A1 (en) 1999-12-02
DE19826009C2 (en) 2002-06-20
GB2338549A (en) 1999-12-22

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)