JPS4974021A - - Google Patents

Info

Publication number
JPS4974021A
JPS4974021A JP47113992A JP11399272A JPS4974021A JP S4974021 A JPS4974021 A JP S4974021A JP 47113992 A JP47113992 A JP 47113992A JP 11399272 A JP11399272 A JP 11399272A JP S4974021 A JPS4974021 A JP S4974021A
Authority
JP
Japan
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
JP47113992A
Other languages
Japanese (ja)
Other versions
JPS5340333B2 (cg-RX-API-DMAC10.html
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 filed Critical
Priority to JP11399272A priority Critical patent/JPS5340333B2/ja
Priority to US00412457A priority patent/US3856407A/en
Priority to FR7340126A priority patent/FR2206860A5/fr
Priority to DE19732356629 priority patent/DE2356629C3/de
Priority to GB5283573A priority patent/GB1449255A/en
Publication of JPS4974021A publication Critical patent/JPS4974021A/ja
Publication of JPS5340333B2 publication Critical patent/JPS5340333B2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/32—Measuring distances in line of sight; Optical rangefinders by focusing the object, e.g. on a ground glass screen
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/46—Systems using spatial filters
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
JP11399272A 1972-11-14 1972-11-14 Expired JPS5340333B2 (cg-RX-API-DMAC10.html)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP11399272A JPS5340333B2 (cg-RX-API-DMAC10.html) 1972-11-14 1972-11-14
US00412457A US3856407A (en) 1972-11-14 1973-11-02 Automatic focusing device
FR7340126A FR2206860A5 (cg-RX-API-DMAC10.html) 1972-11-14 1973-11-12
DE19732356629 DE2356629C3 (de) 1972-11-14 1973-11-13 Vorrichtung zur selbsttätigen Schärfeneinstellung (Autofokussierung) eines optischen Systems
GB5283573A GB1449255A (en) 1972-11-14 1973-11-14 Automatic focussing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11399272A JPS5340333B2 (cg-RX-API-DMAC10.html) 1972-11-14 1972-11-14

Publications (2)

Publication Number Publication Date
JPS4974021A true JPS4974021A (cg-RX-API-DMAC10.html) 1974-07-17
JPS5340333B2 JPS5340333B2 (cg-RX-API-DMAC10.html) 1978-10-26

Family

ID=14626332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11399272A Expired JPS5340333B2 (cg-RX-API-DMAC10.html) 1972-11-14 1972-11-14

Country Status (4)

Country Link
US (1) US3856407A (cg-RX-API-DMAC10.html)
JP (1) JPS5340333B2 (cg-RX-API-DMAC10.html)
FR (1) FR2206860A5 (cg-RX-API-DMAC10.html)
GB (1) GB1449255A (cg-RX-API-DMAC10.html)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010479A (en) * 1974-07-10 1977-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Focusing apparatus for optical systems
US3961177A (en) * 1974-07-31 1976-06-01 Goodyear Aerospace Corporation Automatic focusing of optical images
US4103152A (en) * 1976-06-29 1978-07-25 Honeywell Inc. Distance determining and automatic focusing apparatus with false peak discrimination
US4855777A (en) * 1987-03-02 1989-08-08 Canon Kabushiki Kaisha Apparatus for detecting the focus adjusted state of an objective lens
US4810091A (en) * 1987-12-30 1989-03-07 Hewlett-Packard Company Apparatus and method for adjusting focus of a multi-element optical detector
US5280336A (en) * 1991-03-29 1994-01-18 Optikos Corporation Automated radius measurement apparatus
US5416574A (en) * 1991-03-29 1995-05-16 Optikos Corporation Automated optical measurement apparatus
IL161274A0 (en) * 2001-10-10 2004-09-27 Accent Optical Tech Inc Determination of center of focus by cross-section analysis
US10379388B2 (en) 2016-08-12 2019-08-13 Avegant Corp. Digital light path length modulation systems
US10401639B2 (en) 2016-08-12 2019-09-03 Avegant Corp. Method and apparatus for an optical path length extender
US10516879B2 (en) 2016-08-12 2019-12-24 Avegant Corp. Binocular display with digital light path length modulation
US10187634B2 (en) 2016-08-12 2019-01-22 Avegant Corp. Near-eye display system including a modulation stack
US10057488B2 (en) * 2016-08-12 2018-08-21 Avegant Corp. Image capture with digital light path length modulation
US10185153B2 (en) 2016-08-12 2019-01-22 Avegant Corp. Orthogonal optical path length extender
US10809546B2 (en) 2016-08-12 2020-10-20 Avegant Corp. Digital light path length modulation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450018A (en) * 1966-08-30 1969-06-17 Bell & Howell Co Automatic focusing apparatus
DE2156617C3 (de) * 1971-11-15 1980-08-21 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zur Bestimmung der Lage der Ebene maximaler Amplitude einer Ortsfrequenz, beispielsweise bei einem Entfernungsmesser

Also Published As

Publication number Publication date
JPS5340333B2 (cg-RX-API-DMAC10.html) 1978-10-26
DE2356629B2 (de) 1976-03-25
US3856407A (en) 1974-12-24
FR2206860A5 (cg-RX-API-DMAC10.html) 1974-06-07
GB1449255A (en) 1976-09-15
DE2356629A1 (de) 1974-05-30

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