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GB2104334B - Automatic focusing device - Google Patents
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GB2104334B - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
GB2104334B
GB2104334B GB08222604A GB8222604A GB2104334B GB 2104334 B GB2104334 B GB 2104334B GB 08222604 A GB08222604 A GB 08222604A GB 8222604 A GB8222604 A GB 8222604A GB 2104334 B GB2104334 B GB 2104334B
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.)
Expired
Application number
GB08222604A
Other versions
GB2104334A (en
Inventor
Christopher Graham Talbot
James Bernard Grimbleby
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.)
National Research Corp
Original Assignee
National Research Corp
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 National Research Corp filed Critical National Research Corp
Priority to GB08222604A priority Critical patent/GB2104334B/en
Publication of GB2104334A publication Critical patent/GB2104334A/en
Application granted granted Critical
Publication of GB2104334B publication Critical patent/GB2104334B/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
    • G02B7/30—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)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
GB08222604A 1981-08-17 1982-08-05 Automatic focusing device Expired GB2104334B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08222604A GB2104334B (en) 1981-08-17 1982-08-05 Automatic focusing device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8125084 1981-08-17
GB08222604A GB2104334B (en) 1981-08-17 1982-08-05 Automatic focusing device

Publications (2)

Publication Number Publication Date
GB2104334A GB2104334A (en) 1983-03-02
GB2104334B true GB2104334B (en) 1986-06-18

Family

ID=26280491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08222604A Expired GB2104334B (en) 1981-08-17 1982-08-05 Automatic focusing device

Country Status (1)

Country Link
GB (1) GB2104334B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606139B1 (en) * 1986-10-31 1994-05-13 Canon Kk DISTANCE DISTRIBUTION MEASUREMENT METHOD
KR950008704B1 (en) * 1990-09-29 1995-08-04 삼성전자주식회사 Apparatus and method for auto-focusing in a video camera

Also Published As

Publication number Publication date
GB2104334A (en) 1983-03-02

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Legal Events

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