GB2221114B - Autofocus camera - Google Patents

Autofocus camera

Info

Publication number
GB2221114B
GB2221114B GB8915147A GB8915147A GB2221114B GB 2221114 B GB2221114 B GB 2221114B GB 8915147 A GB8915147 A GB 8915147A GB 8915147 A GB8915147 A GB 8915147A GB 2221114 B GB2221114 B GB 2221114B
Authority
GB
United Kingdom
Prior art keywords
autofocus camera
autofocus
camera
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 - Fee Related
Application number
GB8915147A
Other languages
English (en)
Other versions
GB2221114A (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
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB2221114A publication Critical patent/GB2221114A/en
Application granted granted Critical
Publication of GB2221114B publication Critical patent/GB2221114B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • 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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
    • 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
    • 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
    • G03B43/00—Testing correct operation of photographic apparatus or parts thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Stroboscope Apparatuses (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
GB8915147A 1988-06-30 1989-06-30 Autofocus camera Expired - Fee Related GB2221114B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988087122U JP2536236Y2 (ja) 1988-06-30 1988-06-30 カメラの表示装置およびカメラの検査治具

Publications (2)

Publication Number Publication Date
GB2221114A GB2221114A (en) 1990-01-24
GB2221114B true GB2221114B (en) 1993-02-17

Family

ID=13906152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8915147A Expired - Fee Related GB2221114B (en) 1988-06-30 1989-06-30 Autofocus camera

Country Status (4)

Country Link
JP (1) JP2536236Y2 (OSRAM)
DE (1) DE3921643C2 (OSRAM)
FR (2) FR2633735B1 (OSRAM)
GB (1) GB2221114B (OSRAM)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020051A (en) * 1978-04-25 1979-11-07 Polaroid Corp Cameras with rangefinders
GB1569902A (en) * 1976-10-05 1980-06-25 Asahi Optical Co Ltd Electrically controlled camera
US4436397A (en) * 1981-05-28 1984-03-13 Asahi Kogaku Kogyo Kabushiki Kaisha Photographic information display systems for use in photographic cameras
GB2170320A (en) * 1984-12-28 1986-07-30 Canon Kk Camera flash
GB2180074A (en) * 1985-09-06 1987-03-18 Asahi Optical Co Ltd Camera testing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110229A (en) * 1979-02-16 1980-08-25 Asahi Optical Co Ltd Automatic focus indicator of camera
JPS5738402A (en) * 1980-08-19 1982-03-03 Canon Inc Display device of automatic focal point adjuster
US4462669A (en) * 1981-08-18 1984-07-31 Canon Kabushiki Kaisha Self-timer device for camera
JPS59116729A (ja) * 1982-12-24 1984-07-05 Sanpack:Kk 撮影用光源
JPH0625844B2 (ja) * 1983-05-26 1994-04-06 キヤノン株式会社 カメラ
US4711547A (en) * 1984-11-28 1987-12-08 Canon Kabushiki Kaisha Display device
JPS6258233A (ja) * 1985-09-09 1987-03-13 Fuji Photo Optical Co Ltd カメラの作動表示装置
JPH06329741A (ja) * 1993-05-26 1994-11-29 Nippon Kayaku Co Ltd 樹脂、エポキシ樹脂及びその製造法、樹脂組成物及びその硬化物

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569902A (en) * 1976-10-05 1980-06-25 Asahi Optical Co Ltd Electrically controlled camera
GB2020051A (en) * 1978-04-25 1979-11-07 Polaroid Corp Cameras with rangefinders
US4436397A (en) * 1981-05-28 1984-03-13 Asahi Kogaku Kogyo Kabushiki Kaisha Photographic information display systems for use in photographic cameras
GB2170320A (en) * 1984-12-28 1986-07-30 Canon Kk Camera flash
GB2180074A (en) * 1985-09-06 1987-03-18 Asahi Optical Co Ltd Camera testing

Also Published As

Publication number Publication date
FR2633735A1 (OSRAM) 1990-01-05
JP2536236Y2 (ja) 1997-05-21
FR2681154B1 (OSRAM) 1994-12-02
GB2221114A (en) 1990-01-24
DE3921643C2 (de) 2001-02-15
FR2633735B1 (OSRAM) 1993-05-07
JPH027638U (OSRAM) 1990-01-18
DE3921643A1 (de) 1990-01-11
FR2681154A1 (fr) 1993-03-12

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Legal Events

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

Effective date: 20050630