JPS5066239A - - Google Patents

Info

Publication number
JPS5066239A
JPS5066239A JP49107562A JP10756274A JPS5066239A JP S5066239 A JPS5066239 A JP S5066239A JP 49107562 A JP49107562 A JP 49107562A JP 10756274 A JP10756274 A JP 10756274A JP S5066239 A JPS5066239 A JP S5066239A
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.)
Pending
Application number
JP49107562A
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
Publication of JPS5066239A publication Critical patent/JPS5066239A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
    • 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
    • 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)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
JP49107562A 1973-10-09 1974-09-18 Pending JPS5066239A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US404319A US3904869A (en) 1973-10-09 1973-10-09 Focus detecting apparatus

Publications (1)

Publication Number Publication Date
JPS5066239A true JPS5066239A (ja) 1975-06-04

Family

ID=23599143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP49107562A Pending JPS5066239A (ja) 1973-10-09 1974-09-18

Country Status (2)

Country Link
US (1) US3904869A (ja)
JP (1) JPS5066239A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877308U (ja) * 1981-11-19 1983-05-25 オリンパス光学工業株式会社 顕微鏡におけるピント合わせ装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30099E (en) * 1972-12-27 1979-09-18 Canon Kabushiki Kaisha Distance detecting device
US4103152A (en) * 1976-06-29 1978-07-25 Honeywell Inc. Distance determining and automatic focusing apparatus with false peak discrimination
US4474446A (en) * 1982-06-30 1984-10-02 Honeywell Inc. Focal sensor having optical low pass filter
CA1278719C (en) * 1986-02-17 1991-01-08 Munehisa Izushi Camera for recording television, photographic or cinematographic images, including an automatic focus- setting device
JPH0883753A (ja) * 1994-09-13 1996-03-26 Nikon Corp 焦点検出方法
DE102017115021A1 (de) * 2017-07-05 2019-01-10 Carl Zeiss Microscopy Gmbh Digitale Bestimmung der Fokusposition

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450883A (en) * 1965-02-03 1969-06-17 Conductron Corp Automatic focusing apparatus
DE1282988B (de) * 1965-05-28 1968-11-14 Zeiss Carl Fa Einrichtung zum Messen von Lageaenderungen zweier zueinander beweglicher Teile unterVerwendung einer inkohaerenten Strahlung
US3555280A (en) * 1966-04-19 1971-01-12 Hycon Mfg Co Automatic focus sensor and control
US3553455A (en) * 1968-03-01 1971-01-05 Copal Co Ltd Automatic focusing apparatus by means of phase discrimination
US3610934A (en) * 1969-08-22 1971-10-05 Century Geophysical Corp Automatic focusing system utilizing means for alternately directing light over two paths having slightly different lengths
US3757124A (en) * 1971-08-13 1973-09-04 P Kaestner Optical apparatus for focusing an image
US3776639A (en) * 1972-06-05 1973-12-04 Honeywell Inc Frequency responsive focus detecting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877308U (ja) * 1981-11-19 1983-05-25 オリンパス光学工業株式会社 顕微鏡におけるピント合わせ装置

Also Published As

Publication number Publication date
US3904869A (en) 1975-09-09

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