GB2221107B - Position detecting device - Google Patents

Position detecting device

Info

Publication number
GB2221107B
GB2221107B GB8915150A GB8915150A GB2221107B GB 2221107 B GB2221107 B GB 2221107B GB 8915150 A GB8915150 A GB 8915150A GB 8915150 A GB8915150 A GB 8915150A GB 2221107 B GB2221107 B GB 2221107B
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.)
Expired - Lifetime
Application number
GB8915150A
Other languages
English (en)
Other versions
GB2221107A (en
GB8915150D0 (en
Inventor
Takeo Kobayashi
Yasushi Tabata
Norio Numako
Katsutoshi Nagai
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/ja
Priority claimed from JP16389688A external-priority patent/JP2717547B2/ja
Priority claimed from JP16389788A external-priority patent/JP2717548B2/ja
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 (ja) 1988-06-30 1988-06-30 電動ズーム装置
JP16389688A JP2717547B2 (ja) 1988-06-30 1988-06-30 電動ズーム装置
JP16389788A JP2717548B2 (ja) 1988-06-30 1988-06-30 ズームレンズのレンズ位置検出装置

Publications (3)

Publication Number Publication Date
GB8915150D0 GB8915150D0 (en) 1989-08-23
GB2221107A GB2221107A (en) 1990-01-24
GB2221107B true 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 (de)
FR (1) FR2636145B1 (de)
GB (1) GB2221107B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633733B1 (fr) * 1988-06-30 1994-05-13 Asahi Kogaku Kogyo Kk Appareil photographique a commande electronique ayant des modes de fonctionnement macro et normal
US5291232A (en) * 1988-06-30 1994-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Device for controlling an operation of a movable member
FR2676830B1 (fr) * 1991-05-21 1994-07-08 Asahi Optical Co Ltd Dispositif d'entrainement de lentilles, objectif zoom et systeme d'appareil photo.
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB930582A (en) * 1960-03-18 1963-07-03 Gen Precision Inc Analog-to-digital converter
GB1307017A (en) * 1969-03-29 1973-02-14 Licentia Gmbh Control systems for generators
GB2010034A (en) * 1977-12-05 1979-06-20 Pitney Bowes Inc Binary code and means for using the same
GB1590922A (en) * 1976-08-23 1981-06-10 Ishikawajima Harima Heavy Ind Device for detecting relative position or displacement between two movable bodies

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938318C2 (de) * 1979-09-21 1988-05-26 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Meßeinrichtung
US4402586A (en) * 1980-08-04 1983-09-06 Canon Kabushiki Kaisha Focusing system
JPS58208733A (ja) * 1982-05-28 1983-12-05 Minolta Camera Co Ltd 自動及び手動焦点調節可能なカメラ
JPS5941014A (ja) * 1982-08-31 1984-03-07 Canon Inc コ−ド板
US4575212A (en) * 1982-12-28 1986-03-11 Minolta Camera Kabushiki Kaisha Camera with an improved focus detecting system
DD232349A1 (de) * 1984-08-02 1986-01-22 Zeiss Jena Veb Carl Abtastraster fuer einen dual-binaerkodierten massstab fuer laengen- und winkelmesssysteme
JPS61245121A (ja) * 1985-04-23 1986-10-31 Victor Co Of Japan Ltd ズ−ムレンズ装置
JPH07119868B2 (ja) * 1985-06-20 1995-12-20 オリンパス光学工業株式会社 交換レンズの距離情報出力装置
DE3604160A1 (en) * 1986-02-10 1987-09-10 T & R Electronic Gmbh Auxiliary device in connection with an electronic counter control device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB930582A (en) * 1960-03-18 1963-07-03 Gen Precision Inc Analog-to-digital converter
GB1307017A (en) * 1969-03-29 1973-02-14 Licentia Gmbh Control systems for generators
GB1590922A (en) * 1976-08-23 1981-06-10 Ishikawajima Harima Heavy Ind Device for detecting relative position or displacement between two movable bodies
GB2010034A (en) * 1977-12-05 1979-06-20 Pitney Bowes Inc Binary code and means for using the same

Also Published As

Publication number Publication date
GB2221107A (en) 1990-01-24
FR2636145B1 (fr) 1994-03-18
FR2636145A1 (fr) 1990-03-09
GB8915150D0 (en) 1989-08-23
DE3921618C2 (de) 1996-07-11
DE3921618A1 (de) 1990-01-04

Similar Documents

Publication Publication Date Title
EP0322675A3 (en) Position detecting device
EP0326396A3 (en) Position detecting apparatus
EP0432689A3 (en) Remaining-amount-of-battery detecting device
EP0329430A3 (en) Position detecting device
GB8700783D0 (en) Reference position detecting device
EP0416751A3 (en) Sensing device
GB2231957B (en) Position sensing device
EP0327089A3 (en) Gas detecting device
GB8927905D0 (en) Detection device
GB2204206B (en) Moving object detecting device
GB9012470D0 (en) Position sensing device
GB8929199D0 (en) Position detecting device
GB8912277D0 (en) Sensor device
GB2221107B (en) Position detecting device
GB8806942D0 (en) Position sensing device
EP0216159A3 (en) Position detecting device
GB8814735D0 (en) Position indicating device
YU147989A (en) Improved sensor device
GB2218212B (en) Contact sensor device
GB8916553D0 (en) Sensor device
GB8801082D0 (en) Sensing device
GB8925830D0 (en) Sensing device
GB8827403D0 (en) Detection device
GB8918351D0 (en) Measuring device
GB8815238D0 (en) Measuring device

Legal Events

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

Effective date: 20070630