GB8915150D0 - Position detecting device - Google Patents

Position detecting device

Info

Publication number
GB8915150D0
GB8915150D0 GB898915150A GB8915150A GB8915150D0 GB 8915150 D0 GB8915150 D0 GB 8915150D0 GB 898915150 A GB898915150 A GB 898915150A GB 8915150 A GB8915150 A GB 8915150A GB 8915150 D0 GB8915150 D0 GB 8915150D0
Authority
GB
United Kingdom
Prior art keywords
detecting device
position detecting
detecting
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.)
Granted
Application number
GB898915150A
Other versions
GB2221107A (en
GB2221107B (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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
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 claimed from JP16389588A external-priority patent/JP2717546B2/en
Priority claimed from JP16389688A external-priority patent/JP2717547B2/en
Priority claimed from JP16389788A external-priority patent/JP2717548B2/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB8915150D0 publication Critical patent/GB8915150D0/en
Publication of GB2221107A publication Critical patent/GB2221107A/en
Application granted granted Critical
Publication of GB2221107B publication Critical patent/GB2221107B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/282—Autofocusing of zoom lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • H03M1/285—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding of the unit Hamming distance type, e.g. Gray code
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0503—Built-in units

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Lens Barrels (AREA)
GB8915150A 1988-06-30 1989-06-30 Position detecting device Expired - Lifetime GB2221107B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP16389588A JP2717546B2 (en) 1988-06-30 1988-06-30 Electric zoom device
JP16389688A JP2717547B2 (en) 1988-06-30 1988-06-30 Electric zoom device
JP16389788A JP2717548B2 (en) 1988-06-30 1988-06-30 Zoom lens lens position detector

Publications (3)

Publication Number Publication Date
GB8915150D0 true GB8915150D0 (en) 1989-08-23
GB2221107A GB2221107A (en) 1990-01-24
GB2221107B GB2221107B (en) 1992-12-16

Family

ID=27322248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8915150A Expired - Lifetime GB2221107B (en) 1988-06-30 1989-06-30 Position detecting device

Country Status (3)

Country Link
DE (1) DE3921618C2 (en)
FR (1) FR2636145B1 (en)
GB (1) GB2221107B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633733B1 (en) * 1988-06-30 1994-05-13 Asahi Kogaku Kogyo Kk ELECTRONICALLY CONTROLLED PHOTOGRAPHIC APPARATUS HAVING MACRO AND NORMAL OPERATING MODES
US5291232A (en) * 1988-06-30 1994-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Device for controlling an operation of a movable member
FR2676830B1 (en) * 1991-05-21 1994-07-08 Asahi Optical Co Ltd LENS DRIVE DEVICE, ZOOM LENS, AND CAMERA SYSTEM.
US5396306A (en) * 1991-05-21 1995-03-07 Asahi Kogaku Kogyo Kabushiki Kaisha Power lens and camera system
US5450156A (en) * 1991-05-21 1995-09-12 Asahi Kogaku Kogyo Kabushiki Kaisha Power zoom lens and camera having same
GB2309603B (en) * 1996-01-26 2000-06-21 Asahi Optical Co Ltd Electronically controlled camera
GB2345982B (en) * 1996-01-26 2000-09-06 Asahi Optical Co Ltd Electronically controlled camera
US5907725A (en) * 1996-01-26 1999-05-25 Asahi Kogaku Kogyo Kabushiki Kaisha Electronically controlled camera

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163858A (en) * 1960-03-18 1964-12-29 Gen Precision Inc Analog-to-digital converter
DE1916348A1 (en) * 1969-03-29 1970-10-08 Licentia Gmbh Device for controlling a movement by continuously setting at least one position coordinate register
JPS5326149A (en) * 1976-08-23 1978-03-10 Ishikawajima Harima Heavy Ind Relative position detector
US4148434A (en) * 1977-12-05 1979-04-10 Pitney-Bowes, Inc. Method of producing a binary code and means for using the same
DE2938318C2 (en) * 1979-09-21 1988-05-26 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Measuring device
US4402586A (en) * 1980-08-04 1983-09-06 Canon Kabushiki Kaisha Focusing system
JPS58208733A (en) * 1982-05-28 1983-12-05 Minolta Camera Co Ltd Camera enabled to focalize automatically and manually
JPS5941014A (en) * 1982-08-31 1984-03-07 Canon Inc Code plate
US4575212A (en) * 1982-12-28 1986-03-11 Minolta Camera Kabushiki Kaisha Camera with an improved focus detecting system
DD232349A1 (en) * 1984-08-02 1986-01-22 Zeiss Jena Veb Carl SCANNER FOR A DUAL-BINARY-CODED SCALE FOR LENGTH AND ANGLE MEASURING SYSTEMS
JPS61245121A (en) * 1985-04-23 1986-10-31 Victor Co Of Japan Ltd Zoom lens device
JPH07119868B2 (en) * 1985-06-20 1995-12-20 オリンパス光学工業株式会社 Interchangeable lens distance information output device
DE3604160A1 (en) * 1986-02-10 1987-09-10 T & R Electronic Gmbh Auxiliary device in connection with an electronic counter control device

Also Published As

Publication number Publication date
GB2221107A (en) 1990-01-24
FR2636145B1 (en) 1994-03-18
GB2221107B (en) 1992-12-16
FR2636145A1 (en) 1990-03-09
DE3921618C2 (en) 1996-07-11
DE3921618A1 (en) 1990-01-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070630