JPS5716411A - Focusing detector - Google Patents

Focusing detector

Info

Publication number
JPS5716411A
JPS5716411A JP9089480A JP9089480A JPS5716411A JP S5716411 A JPS5716411 A JP S5716411A JP 9089480 A JP9089480 A JP 9089480A JP 9089480 A JP9089480 A JP 9089480A JP S5716411 A JPS5716411 A JP S5716411A
Authority
JP
Japan
Prior art keywords
focusing
optical
diffusing board
optical detector
variance
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.)
Pending
Application number
JP9089480A
Other languages
Japanese (ja)
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 JP9089480A priority Critical patent/JPS5716411A/en
Publication of JPS5716411A publication Critical patent/JPS5716411A/en
Pending 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)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To compensate variance in sensitivity of each optical detector by measuring an output when an optical diffusing board is inserted into an optical path in a device that detects focusing from the difference in amounts of light, received from each element of an optical detector array. CONSTITUTION:In an optical path to which light from an object to be pickuped enters to an optical detector arrays 3A, 3A placed before and behind the surface equivalent to a film, a diffusing board 4 is arranged for in and out movement freely with a motor 29, arranged. A value when passed through the diffusing board is taken in a compensation reading unit 7 via an AD convertor and a piece of information of a picture image is taken in an image information reading unit 8, and, after variance in characteristics of each element was compensated by a compensation unit 9, are sent to a focusing detecting unit 10. A signal for focusing is sent to a controller 11, to actuate a focusing displaying means 12, and an atomatic focusing mechanisms 13, 14 according to a system of a camera.
JP9089480A 1980-07-03 1980-07-03 Focusing detector Pending JPS5716411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9089480A JPS5716411A (en) 1980-07-03 1980-07-03 Focusing detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9089480A JPS5716411A (en) 1980-07-03 1980-07-03 Focusing detector

Publications (1)

Publication Number Publication Date
JPS5716411A true JPS5716411A (en) 1982-01-27

Family

ID=14011104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9089480A Pending JPS5716411A (en) 1980-07-03 1980-07-03 Focusing detector

Country Status (1)

Country Link
JP (1) JPS5716411A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02181108A (en) * 1989-05-02 1990-07-13 Olympus Optical Co Ltd Adjusting method for focus detector
US5329109A (en) * 1992-06-08 1994-07-12 Olympus Optical Co., Ltd. Photoelectric converting device having a plurality of monitoring means for detecting point of focus with high precision for focusing area lying over a plurality of blocks
US5365302A (en) * 1992-05-01 1994-11-15 Olympus Optical Company, Ltd. Focus area setting apparatus of camera
US5402740A (en) * 1990-06-22 1995-04-04 Iseki & Co., Ltd. Vehicular machine for transplanting vegetal seedlings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02181108A (en) * 1989-05-02 1990-07-13 Olympus Optical Co Ltd Adjusting method for focus detector
US5402740A (en) * 1990-06-22 1995-04-04 Iseki & Co., Ltd. Vehicular machine for transplanting vegetal seedlings
US5365302A (en) * 1992-05-01 1994-11-15 Olympus Optical Company, Ltd. Focus area setting apparatus of camera
US5329109A (en) * 1992-06-08 1994-07-12 Olympus Optical Co., Ltd. Photoelectric converting device having a plurality of monitoring means for detecting point of focus with high precision for focusing area lying over a plurality of blocks

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