JPH0363722B2 - - Google Patents

Info

Publication number
JPH0363722B2
JPH0363722B2 JP7932583A JP7932583A JPH0363722B2 JP H0363722 B2 JPH0363722 B2 JP H0363722B2 JP 7932583 A JP7932583 A JP 7932583A JP 7932583 A JP7932583 A JP 7932583A JP H0363722 B2 JPH0363722 B2 JP H0363722B2
Authority
JP
Japan
Prior art keywords
contrast
lens
circuit
signal
photographing lens
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
JP7932583A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59204807A (ja
Inventor
Osamu 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.)
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
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP7932583A priority Critical patent/JPS59204807A/ja
Publication of JPS59204807A publication Critical patent/JPS59204807A/ja
Publication of JPH0363722B2 publication Critical patent/JPH0363722B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP7932583A 1983-05-09 1983-05-09 自動焦点レンズの駆動方法および駆動装置 Granted JPS59204807A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7932583A JPS59204807A (ja) 1983-05-09 1983-05-09 自動焦点レンズの駆動方法および駆動装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7932583A JPS59204807A (ja) 1983-05-09 1983-05-09 自動焦点レンズの駆動方法および駆動装置

Publications (2)

Publication Number Publication Date
JPS59204807A JPS59204807A (ja) 1984-11-20
JPH0363722B2 true JPH0363722B2 (enrdf_load_stackoverflow) 1991-10-02

Family

ID=13686726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7932583A Granted JPS59204807A (ja) 1983-05-09 1983-05-09 自動焦点レンズの駆動方法および駆動装置

Country Status (1)

Country Link
JP (1) JPS59204807A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7345706B2 (en) 2002-08-23 2008-03-18 Fuji Photo Optical Co., Ltd. Auto focus system

Also Published As

Publication number Publication date
JPS59204807A (ja) 1984-11-20

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