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GB2256060B - Exposure control apparatus of camera - Google Patents

Exposure control apparatus of camera

Info

Publication number
GB2256060B
GB2256060B GB9208332A GB9208332A GB2256060B GB 2256060 B GB2256060 B GB 2256060B GB 9208332 A GB9208332 A GB 9208332A GB 9208332 A GB9208332 A GB 9208332A GB 2256060 B GB2256060 B GB 2256060B
Authority
GB
United Kingdom
Prior art keywords
camera
control apparatus
exposure control
exposure
control
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
GB9208332A
Other versions
GB9208332D0 (en
GB2256060A (en
Inventor
Osamu Sato
Satoshi Nakano
Isamu Hirai
Toshiyuki Kitazawa
Takayuki Sensui
Masato Yamamoto
Toshimasa Yamanaka
Takenao Shishikura
Akio Takahashi
Nobuhiko Matsudo
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 JP3214834A external-priority patent/JP2997343B2/en
Priority claimed from JP03361198A external-priority patent/JP3100724B2/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB9208332D0 publication Critical patent/GB9208332D0/en
Publication of GB2256060A publication Critical patent/GB2256060A/en
Application granted granted Critical
Publication of GB2256060B publication Critical patent/GB2256060B/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
    • G03B7/097—Digital circuits for control of both exposure time and aperture
    • 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
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
GB9208332A 1991-04-15 1992-04-15 Exposure control apparatus of camera Expired - Fee Related GB2256060B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP17349591 1991-04-15
JP3214834A JP2997343B2 (en) 1991-05-21 1991-05-21 Camera exposure control device
JP03361198A JP3100724B2 (en) 1991-04-15 1991-11-28 Camera exposure control device

Publications (3)

Publication Number Publication Date
GB9208332D0 GB9208332D0 (en) 1992-06-03
GB2256060A GB2256060A (en) 1992-11-25
GB2256060B true GB2256060B (en) 1994-07-13

Family

ID=27323788

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9208332A Expired - Fee Related GB2256060B (en) 1991-04-15 1992-04-15 Exposure control apparatus of camera

Country Status (7)

Country Link
AU (1) AU649804B2 (en)
CA (1) CA2066064C (en)
DE (1) DE4212660C2 (en)
FR (1) FR2675277B1 (en)
GB (1) GB2256060B (en)
HK (1) HK36495A (en)
MY (1) MY110099A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB925517A (en) * 1958-08-26 1963-05-08 Agfa Ag Photographic camera
GB1552597A (en) * 1975-10-09 1979-09-19 Haskell R Camera controller
US4329034A (en) * 1979-08-07 1982-05-11 Canon Kabushiki Kaisha Camera with program system
US4358188A (en) * 1978-05-19 1982-11-09 Canon Kabushiki Kaisha Camera having program shutter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103307A (en) * 1973-07-16 1978-07-25 Canon Kabushiki Kaisha Exposure control device
JPS5478124A (en) * 1977-12-03 1979-06-22 Nippon Chemical Ind Automatic exposure control camera display unit
JPS60173526A (en) * 1984-02-20 1985-09-06 Asahi Optical Co Ltd Automatic exposure camera
US4653893A (en) * 1984-09-03 1987-03-31 Minolta Camera Co., Ltd. Camera exposure calculating device
US4792823A (en) * 1985-06-27 1988-12-20 Minolta Camera Kabushiki Kaisha Camera and camera system
JPH0785154B2 (en) * 1986-03-14 1995-09-13 オリンパス光学工業株式会社 Camera program exposure characteristic setting method and setting apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB925517A (en) * 1958-08-26 1963-05-08 Agfa Ag Photographic camera
GB1552597A (en) * 1975-10-09 1979-09-19 Haskell R Camera controller
US4358188A (en) * 1978-05-19 1982-11-09 Canon Kabushiki Kaisha Camera having program shutter
US4329034A (en) * 1979-08-07 1982-05-11 Canon Kabushiki Kaisha Camera with program system

Also Published As

Publication number Publication date
AU1489192A (en) 1992-10-22
CA2066064C (en) 2001-07-31
CA2066064A1 (en) 1992-10-16
FR2675277B1 (en) 1995-01-20
GB9208332D0 (en) 1992-06-03
FR2675277A1 (en) 1992-10-16
GB2256060A (en) 1992-11-25
MY110099A (en) 1998-01-27
AU649804B2 (en) 1994-06-02
DE4212660A1 (en) 1992-10-22
HK36495A (en) 1995-03-24
DE4212660C2 (en) 1997-11-06

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110415