JPS5716410A - Focusing detector - Google Patents

Focusing detector

Info

Publication number
JPS5716410A
JPS5716410A JP9089380A JP9089380A JPS5716410A JP S5716410 A JPS5716410 A JP S5716410A JP 9089380 A JP9089380 A JP 9089380A JP 9089380 A JP9089380 A JP 9089380A JP S5716410 A JPS5716410 A JP S5716410A
Authority
JP
Japan
Prior art keywords
focusing
detecting element
optical detecting
unit
illuminated
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
JP9089380A
Other languages
Japanese (ja)
Other versions
JPH0416762B2 (en
Inventor
Takeomi Suzuki
Kenichi Oikami
Masahiro Aoki
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP9089380A priority Critical patent/JPS5716410A/en
Publication of JPS5716410A publication Critical patent/JPS5716410A/en
Publication of JPH0416762B2 publication Critical patent/JPH0416762B2/ja
Granted 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
    • 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)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To compenstate sensitivity of an optical detecting element by measuring an output when the optical detecting element array is illuminated with bight emitting means in a device that detects focusing from an amount of light received from many optical detecting element arrays. CONSTITUTION:An output from optical detecting element arrays 3A, 3B placed before and behind the surface equivalent to a film is converted to a digital signal and enters a central processing unit 6. A value when illuminated with a light emitting element 4 is taken in a compensation reading unit 7 and picture image information is taken in an image information reading unit 8, and after the variance in characteristics of each optical detecting element by a compensation unit 9, is sent to a focusing detecting unit 10. A focusing signal is sent to a controller, to actuate a focusing displaying means 12 and an automatic focusing mechanisms 13, 14 in responce to a system of a camera. Further, the emitting element 4 is mounted on the rear surface of a shutter 30 driven by a motor 29 and inserted selectively into an optical path and emitted.
JP9089380A 1980-07-03 1980-07-03 Focusing detector Granted JPS5716410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9089380A JPS5716410A (en) 1980-07-03 1980-07-03 Focusing detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9089380A JPS5716410A (en) 1980-07-03 1980-07-03 Focusing detector

Publications (2)

Publication Number Publication Date
JPS5716410A true JPS5716410A (en) 1982-01-27
JPH0416762B2 JPH0416762B2 (en) 1992-03-25

Family

ID=14011077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9089380A Granted JPS5716410A (en) 1980-07-03 1980-07-03 Focusing detector

Country Status (1)

Country Link
JP (1) JPS5716410A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500189A (en) * 1982-10-04 1985-02-19 Olympus Optical Co., Ltd. Apparatus for detecting the focus condition of an imaging lens
US5541706A (en) * 1992-10-22 1996-07-30 Nikon Corporation Exposure calculation device for a camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500189A (en) * 1982-10-04 1985-02-19 Olympus Optical Co., Ltd. Apparatus for detecting the focus condition of an imaging lens
US5541706A (en) * 1992-10-22 1996-07-30 Nikon Corporation Exposure calculation device for a camera

Also Published As

Publication number Publication date
JPH0416762B2 (en) 1992-03-25

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