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CA1021183A - Automatic focus apparatus for optical systems - Google Patents

Automatic focus apparatus for optical systems

Info

Publication number
CA1021183A
CA1021183A CA211,440A CA211440A CA1021183A CA 1021183 A CA1021183 A CA 1021183A CA 211440 A CA211440 A CA 211440A CA 1021183 A CA1021183 A CA 1021183A
Authority
CA
Canada
Prior art keywords
optical systems
automatic focus
focus apparatus
automatic
optical
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
CA211,440A
Other versions
CA211440S (en
Inventor
Philipp G. Kornreich
Stephen T. Kowel
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.)
Research Corp
Original Assignee
Research Corp
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 Research Corp filed Critical Research Corp
Application granted granted Critical
Publication of CA1021183A publication Critical patent/CA1021183A/en
Expired 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
    • G02B7/365—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals by analysis of the spatial frequency components of the image
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Focusing (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
CA211,440A 1974-01-17 1974-10-15 Automatic focus apparatus for optical systems Expired CA1021183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43410274A 1974-01-17 1974-01-17

Publications (1)

Publication Number Publication Date
CA1021183A true CA1021183A (en) 1977-11-22

Family

ID=23722844

Family Applications (1)

Application Number Title Priority Date Filing Date
CA211,440A Expired CA1021183A (en) 1974-01-17 1974-10-15 Automatic focus apparatus for optical systems

Country Status (5)

Country Link
JP (1) JPS50104644A (en)
AT (1) AT370887B (en)
CA (1) CA1021183A (en)
DE (1) DE2447914C3 (en)
GB (1) GB1480289A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5629215A (en) * 1979-08-15 1981-03-24 Konishiroku Photo Ind Co Ltd Focus detector
CN112762993B (en) * 2020-12-29 2021-10-08 深圳市韦德勋光电科技有限公司 Detection device for raw material of LCD logic board substrate and use method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689772A (en) * 1971-08-18 1972-09-05 Litton Systems Inc Photodetector light pattern detector

Also Published As

Publication number Publication date
ATA821374A (en) 1982-05-15
DE2447914C3 (en) 1980-03-20
GB1480289A (en) 1977-07-20
DE2447914A1 (en) 1975-07-31
JPS50104644A (en) 1975-08-18
DE2447914B2 (en) 1979-07-12
AT370887B (en) 1983-05-10

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