GB2047905B - Focus indicating device for a camera - Google Patents

Focus indicating device for a camera

Info

Publication number
GB2047905B
GB2047905B GB8003678A GB8003678A GB2047905B GB 2047905 B GB2047905 B GB 2047905B GB 8003678 A GB8003678 A GB 8003678A GB 8003678 A GB8003678 A GB 8003678A GB 2047905 B GB2047905 B GB 2047905B
Authority
GB
United Kingdom
Prior art keywords
camera
indicating device
focus indicating
focus
indicating
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
Application number
GB8003678A
Other versions
GB2047905A (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 JP1525379A external-priority patent/JPS55108642A/en
Priority claimed from JP1694979A external-priority patent/JPS55110229A/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB2047905A publication Critical patent/GB2047905A/en
Application granted granted Critical
Publication of GB2047905B publication Critical patent/GB2047905B/en
Expired 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
GB8003678A 1979-02-13 1980-02-04 Focus indicating device for a camera Expired GB2047905B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1525379A JPS55108642A (en) 1979-02-13 1979-02-13 Focus indicator of camera
JP1694979A JPS55110229A (en) 1979-02-16 1979-02-16 Automatic focus indicator of camera

Publications (2)

Publication Number Publication Date
GB2047905A GB2047905A (en) 1980-12-03
GB2047905B true GB2047905B (en) 1983-06-15

Family

ID=26351377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8003678A Expired GB2047905B (en) 1979-02-13 1980-02-04 Focus indicating device for a camera

Country Status (2)

Country Link
DE (1) DE3005043C2 (en)
GB (1) GB2047905B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155308A (en) * 1979-05-23 1980-12-03 Canon Inc Focusing position detecting system
JPS57190936A (en) * 1981-05-20 1982-11-24 Olympus Optical Co Ltd Focusing display device of camera
GB2129642B (en) * 1982-11-05 1986-09-10 British Library Board Focus detection
KR0157459B1 (en) * 1993-02-04 1998-11-16 김광호 Apparatus for lens focus control

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
DE2806868C3 (en) * 1977-02-19 1981-10-01 Asahi Kogaku Kogyo K.K., Tokyo Detector element for a device for focusing an imaging optical system
JPS5413330A (en) * 1977-07-01 1979-01-31 Olympus Optical Co Ltd Automatic focus adjusting system
JPS5529832A (en) * 1978-08-23 1980-03-03 Asahi Optical Co Ltd Camera focus indicator

Also Published As

Publication number Publication date
DE3005043C2 (en) 1985-03-21
DE3005043A1 (en) 1980-08-14
GB2047905A (en) 1980-12-03

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930204