CH553421A - DEVICE FOR INDEPENDENT FOCUSING. - Google Patents

DEVICE FOR INDEPENDENT FOCUSING.

Info

Publication number
CH553421A
CH553421A CH1537972A CH1537972A CH553421A CH 553421 A CH553421 A CH 553421A CH 1537972 A CH1537972 A CH 1537972A CH 1537972 A CH1537972 A CH 1537972A CH 553421 A CH553421 A CH 553421A
Authority
CH
Switzerland
Prior art keywords
independent focusing
focusing
independent
Prior art date
Application number
CH1537972A
Other languages
German (de)
Original Assignee
Leitz Ernst Gmbh
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
Priority claimed from DE2156617A external-priority patent/DE2156617C3/en
Priority claimed from DE19722201092 external-priority patent/DE2201092C3/en
Application filed by Leitz Ernst Gmbh filed Critical Leitz Ernst Gmbh
Publication of CH553421A publication Critical patent/CH553421A/en

Links

Classifications

    • 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
    • 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)
  • Eye Examination Apparatus (AREA)
CH1537972A 1971-11-15 1972-10-20 DEVICE FOR INDEPENDENT FOCUSING. CH553421A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2156617A DE2156617C3 (en) 1971-11-15 1971-11-15 Device for determining the position of the plane of maximum amplitude of a spatial frequency, for example in the case of a range finder
DE19722201092 DE2201092C3 (en) 1972-01-11 1972-01-11 Device for determining the relative position of the plane of maximum amplitude of a spatial frequency

Publications (1)

Publication Number Publication Date
CH553421A true CH553421A (en) 1974-08-30

Family

ID=25762020

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1537972A CH553421A (en) 1971-11-15 1972-10-20 DEVICE FOR INDEPENDENT FOCUSING.

Country Status (4)

Country Link
AT (1) AT349775B (en)
CH (1) CH553421A (en)
FR (1) FR2160399B1 (en)
GB (1) GB1396712A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2506531C2 (en) * 1974-02-19 1983-07-28 The Marconi Co. Ltd., Chelmsford, Essex Distance determination device
DE2821722C2 (en) * 1978-05-18 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Device for automatic or semi-automatic focusing of the image of an object on an image plane
FR2442447A1 (en) * 1978-11-22 1980-06-20 Hamel Bernard Acceleration measurement using counter - is determined from shift in peak of absorption of radiation from gamma source
US4474446A (en) * 1982-06-30 1984-10-02 Honeywell Inc. Focal sensor having optical low pass filter
DD234340A3 (en) * 1984-05-02 1986-04-02 Zeiss Jena Veb Carl AUTOMATIC FOCUSING DEVICE
US4998011A (en) * 1989-11-17 1991-03-05 Applied Magnetics Corporation Flat plate focus sensing apparatus
US5657164A (en) * 1991-05-28 1997-08-12 Discovision Associates Optical beamsplitter
CN113188775B (en) * 2021-07-02 2022-02-01 成都康拓兴业科技有限责任公司 Aviation anticollision lamp flash frequency tester

Also Published As

Publication number Publication date
GB1396712A (en) 1975-06-04
ATA905972A (en) 1978-09-15
FR2160399A1 (en) 1973-06-29
FR2160399B1 (en) 1979-04-27
AT349775B (en) 1979-04-25

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Legal Events

Date Code Title Description
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