GB8316817D0 - Automatic focusing of cameras - Google Patents

Automatic focusing of cameras

Info

Publication number
GB8316817D0
GB8316817D0 GB838316817A GB8316817A GB8316817D0 GB 8316817 D0 GB8316817 D0 GB 8316817D0 GB 838316817 A GB838316817 A GB 838316817A GB 8316817 A GB8316817 A GB 8316817A GB 8316817 D0 GB8316817 D0 GB 8316817D0
Authority
GB
United Kingdom
Prior art keywords
cameras
automatic focusing
focusing
automatic
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
GB838316817A
Other versions
GB2128050B (en
GB2128050A (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.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
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 Pentacon Dresden VEB filed Critical Pentacon Dresden VEB
Publication of GB8316817D0 publication Critical patent/GB8316817D0/en
Publication of GB2128050A publication Critical patent/GB2128050A/en
Application granted granted Critical
Publication of GB2128050B publication Critical patent/GB2128050B/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
    • G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
GB08316817A 1982-09-29 1983-06-21 Arrangement for automatic focusing of photographic cameras Expired GB2128050B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD24357282A DD210359A1 (en) 1982-09-29 1982-09-29 ARRANGEMENT FOR AUTOMATIC SHARPENING OF PHOTOGRAPHIC CAMERAS

Publications (3)

Publication Number Publication Date
GB8316817D0 true GB8316817D0 (en) 1983-07-27
GB2128050A GB2128050A (en) 1984-04-18
GB2128050B GB2128050B (en) 1986-08-06

Family

ID=5541444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08316817A Expired GB2128050B (en) 1982-09-29 1983-06-21 Arrangement for automatic focusing of photographic cameras

Country Status (3)

Country Link
DD (1) DD210359A1 (en)
DE (1) DE3329603A1 (en)
GB (1) GB2128050B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5291234A (en) * 1987-02-04 1994-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Auto optical focus detecting device and eye direction detecting optical system
DE3803305C3 (en) * 1987-02-04 1998-12-10 Asahi Optical Co Ltd Device for detecting the focusing of a camera lens
US5583606A (en) * 1987-06-11 1996-12-10 Asahi Kogaku Kogyo Kabushiki Kaisha Eye direction detecting apparatus
US5327191A (en) * 1987-06-11 1994-07-05 Asahi Kogaku Kogyo Kabushiki Kaisha Eye direction detecting apparatus
US5557364A (en) * 1987-12-17 1996-09-17 Asahi Kogaku Kogyo Kabushiki Kaisha Eye direction detecting apparatus
DE3943700C2 (en) * 1988-04-28 1998-10-22 Asahi Optical Co Ltd Structure of optical surface of view finder screen
JP2787488B2 (en) * 1989-11-28 1998-08-20 旭光学工業株式会社 Eye gaze detection device
JPH05154106A (en) * 1991-11-29 1993-06-22 Asahi Optical Co Ltd Sight line detecting device
US5943514A (en) * 1996-07-19 1999-08-24 Asahi Kogaku Kogyo Kabushiki Kaisha Focusing system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH543076A (en) * 1971-06-23 1973-10-15 Vockenhuber Karl Range finder
GB1510941A (en) * 1976-01-15 1978-05-17 Leitz Ernst Gmbh Apparatus for photoelectrically determining the position of the focal plane in an optical system
JPS6044643B2 (en) * 1977-03-18 1985-10-04 旭光学工業株式会社 focus detection device
JPS5598709A (en) * 1979-01-20 1980-07-28 Nippon Kogaku Kk <Nikon> Focusing detector
US4373791A (en) * 1979-02-20 1983-02-15 Ricoh Company, Ltd. Focusing position detection apparatus
JPS5632126A (en) * 1979-08-24 1981-04-01 Canon Inc Ttl type focus detector for lens interchangeable type camera
JPS5843409A (en) * 1981-09-10 1983-03-14 Asahi Optical Co Ltd Detection of focusing position

Also Published As

Publication number Publication date
DE3329603A1 (en) 1984-03-29
DD210359A1 (en) 1984-06-06
GB2128050B (en) 1986-08-06
GB2128050A (en) 1984-04-18

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Legal Events

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

Effective date: 19920621