GB2212688B - Focus determining system for a camera - Google Patents

Focus determining system for a camera

Info

Publication number
GB2212688B
GB2212688B GB8830029A GB8830029A GB2212688B GB 2212688 B GB2212688 B GB 2212688B GB 8830029 A GB8830029 A GB 8830029A GB 8830029 A GB8830029 A GB 8830029A GB 2212688 B GB2212688 B GB 2212688B
Authority
GB
United Kingdom
Prior art keywords
camera
determining system
focus determining
focus
determining
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 - Lifetime
Application number
GB8830029A
Other versions
GB8830029D0 (en
GB2212688A (en
Inventor
Shinji Nagaoka
Katsuhiko Matsushita
Koji Sato
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.)
Seikosha KK
Original Assignee
Seikosha KK
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 JP62327293A external-priority patent/JPH07104158B2/en
Priority claimed from JP32728987A external-priority patent/JPH01199108A/en
Priority claimed from JP62327291A external-priority patent/JPH07104157B2/en
Priority claimed from JP32729287A external-priority patent/JPH01199111A/en
Priority claimed from JP32729087A external-priority patent/JPH01199109A/en
Application filed by Seikosha KK filed Critical Seikosha KK
Publication of GB8830029D0 publication Critical patent/GB8830029D0/en
Publication of GB2212688A publication Critical patent/GB2212688A/en
Application granted granted Critical
Publication of GB2212688B publication Critical patent/GB2212688B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/46—Indirect determination of position data
    • G01S17/48—Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Focusing (AREA)
  • Measurement Of Optical Distance (AREA)
  • Automatic Focus Adjustment (AREA)
GB8830029A 1987-12-25 1988-12-22 Focus determining system for a camera Expired - Lifetime GB2212688B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP62327293A JPH07104158B2 (en) 1987-12-25 1987-12-25 Distance detector for camera
JP32728987A JPH01199108A (en) 1987-12-25 1987-12-25 Distance detector for camera
JP62327291A JPH07104157B2 (en) 1987-12-25 1987-12-25 Distance detector for camera
JP32729287A JPH01199111A (en) 1987-12-25 1987-12-25 Distance detector for camera
JP32729087A JPH01199109A (en) 1987-12-25 1987-12-25 Distance detector for camera

Publications (3)

Publication Number Publication Date
GB8830029D0 GB8830029D0 (en) 1989-02-15
GB2212688A GB2212688A (en) 1989-07-26
GB2212688B true GB2212688B (en) 1992-06-17

Family

ID=27531164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8830029A Expired - Lifetime GB2212688B (en) 1987-12-25 1988-12-22 Focus determining system for a camera

Country Status (3)

Country Link
DE (1) DE3843648C2 (en)
GB (1) GB2212688B (en)
HK (1) HK19894A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3001013B2 (en) * 1991-03-06 2000-01-17 オリンパス光学工業株式会社 Distance measuring device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2019152A (en) * 1978-04-07 1979-10-24 Agfa Gevaert Ag Camera focussing system
GB2027313A (en) * 1978-07-21 1980-02-13 Agfa Gevaert Ag Camera focussing system
EP0140650A1 (en) * 1983-10-19 1985-05-08 Matsushita Electric Industrial Co., Ltd. Automatic focusing device for a video camera
EP0175580A2 (en) * 1984-09-18 1986-03-26 Matsushita Electric Industrial Co., Ltd. Automatic focusing apparatus for camera

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK8079A (en) * 1978-01-13 1979-07-14 Patent Concern Nv SOIL TURNING MACHINE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2019152A (en) * 1978-04-07 1979-10-24 Agfa Gevaert Ag Camera focussing system
GB2027313A (en) * 1978-07-21 1980-02-13 Agfa Gevaert Ag Camera focussing system
EP0140650A1 (en) * 1983-10-19 1985-05-08 Matsushita Electric Industrial Co., Ltd. Automatic focusing device for a video camera
EP0175580A2 (en) * 1984-09-18 1986-03-26 Matsushita Electric Industrial Co., Ltd. Automatic focusing apparatus for camera

Also Published As

Publication number Publication date
DE3843648C2 (en) 1995-11-16
HK19894A (en) 1994-03-18
GB8830029D0 (en) 1989-02-15
GB2212688A (en) 1989-07-26
DE3843648A1 (en) 1989-07-06

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19950510

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: 20041222