GB8923297D0 - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
GB8923297D0
GB8923297D0 GB898923297A GB8923297A GB8923297D0 GB 8923297 D0 GB8923297 D0 GB 8923297D0 GB 898923297 A GB898923297 A GB 898923297A GB 8923297 A GB8923297 A GB 8923297A GB 8923297 D0 GB8923297 D0 GB 8923297D0
Authority
GB
United Kingdom
Prior art keywords
automatic focusing
focusing device
automatic
focusing
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
GB898923297A
Other versions
GB2224126B (en
GB2224126A (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 JP1988135835U external-priority patent/JPH0714969Y2/en
Priority claimed from JP27281688A external-priority patent/JPH02118610A/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB8923297D0 publication Critical patent/GB8923297D0/en
Publication of GB2224126A publication Critical patent/GB2224126A/en
Application granted granted Critical
Publication of GB2224126B publication Critical patent/GB2224126B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
GB8923297A 1988-10-18 1989-10-16 Automatic focusing device Expired - Fee Related GB2224126B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1988135835U JPH0714969Y2 (en) 1988-10-18 1988-10-18 Camera autofocus device
JP27281688A JPH02118610A (en) 1988-10-28 1988-10-28 Focus limiter for automatic focusing camera

Publications (3)

Publication Number Publication Date
GB8923297D0 true GB8923297D0 (en) 1989-12-06
GB2224126A GB2224126A (en) 1990-04-25
GB2224126B GB2224126B (en) 1993-03-31

Family

ID=26469589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8923297A Expired - Fee Related GB2224126B (en) 1988-10-18 1989-10-16 Automatic focusing device

Country Status (3)

Country Link
DE (1) DE3934767C2 (en)
FR (1) FR2637990A1 (en)
GB (1) GB2224126B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3103587B2 (en) * 1990-04-25 2000-10-30 オリンパス光学工業株式会社 Automatic focusing device
US5291235A (en) * 1990-11-29 1994-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic focusing device
FR2670027A1 (en) * 1990-11-29 1992-06-05 Asahi Optical Co Ltd AUTOMATIC FOCUSING DEVICE.
USRE36546E (en) * 1990-11-29 2000-02-01 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic focusing device
FR2676552B1 (en) * 1991-05-15 1996-01-12 Asahi Optical Co Ltd AUTOMATIC FOCUSING DEVICE.
US8134597B2 (en) 2008-12-05 2012-03-13 Sony Ericsson Mobile Communications Ab Camera system with touch focus and method

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732409A (en) * 1980-08-06 1982-02-22 Chinon Kk Focusing controller
DE3141182A1 (en) * 1980-10-16 1982-05-19 Canon K.K., Tokyo "FOCUS DETECTING SYSTEM"
JPS58132205A (en) * 1982-01-30 1983-08-06 Ricoh Co Ltd Lens driving system for auto-focus system
JPS5964816A (en) * 1982-10-05 1984-04-12 Olympus Optical Co Ltd Lens barrel
JPS59119306A (en) * 1982-12-25 1984-07-10 Canon Inc Automatic focus adjusting device
JPS6053913A (en) * 1983-09-05 1985-03-28 Canon Inc Automatic focusing device
US4671640A (en) * 1984-08-09 1987-06-09 Minolta Camera Kabushiki Kaisha Automatic focus control camera
DE3437145C2 (en) * 1984-10-10 1996-03-28 Ricoh Kk Automatic focusing device for photographic cameras
JP2572372B2 (en) * 1985-05-23 1997-01-16 株式会社ニコン Focus detection device
JPS62169113A (en) * 1986-01-21 1987-07-25 Minolta Camera Co Ltd Automatic focus adjuster
US4768054A (en) * 1986-02-14 1988-08-30 Minolta Camera Kabushiki Kaisha Focus condition detecting device
JPH0820582B2 (en) * 1986-07-16 1996-03-04 株式会社ニコン camera
JPS6347742A (en) * 1986-08-15 1988-02-29 Nikon Corp Automatic focus adjusting camera
EP0347042B1 (en) * 1988-05-13 1995-01-25 Nikon Corporation Automatic focusing apparatus

Also Published As

Publication number Publication date
DE3934767C2 (en) 1996-05-30
GB2224126B (en) 1993-03-31
DE3934767A1 (en) 1990-04-19
GB2224126A (en) 1990-04-25
FR2637990A1 (en) 1990-04-20

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Legal Events

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

Effective date: 20071016