CA1009072A - Method for determining the position of a focussing plane - Google Patents

Method for determining the position of a focussing plane

Info

Publication number
CA1009072A
CA1009072A CA202,631A CA202631A CA1009072A CA 1009072 A CA1009072 A CA 1009072A CA 202631 A CA202631 A CA 202631A CA 1009072 A CA1009072 A CA 1009072A
Authority
CA
Canada
Prior art keywords
determining
focussing plane
focussing
plane
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
CA202,631A
Other languages
English (en)
Other versions
CA202631S (en
Inventor
Ludwig Leitz
Knut Heitmann
Eckart Schneider
Klaus D. Schaefer
Original Assignee
Ernst Leitz 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 DE19732330940 external-priority patent/DE2330940C3/de
Application filed by Ernst Leitz GmbH filed Critical Ernst Leitz GmbH
Application granted granted Critical
Publication of CA1009072A publication Critical patent/CA1009072A/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
    • G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Optical Distance (AREA)
  • Length Measuring Devices By Optical Means (AREA)
CA202,631A 1973-06-18 1974-06-17 Method for determining the position of a focussing plane Expired CA1009072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732330940 DE2330940C3 (de) 1973-06-18 Verfahren und Einrichtungen zur fotoelektrischen Bestimmung der Lage mindestens einer Schärfenebene eines Bildes

Publications (1)

Publication Number Publication Date
CA1009072A true CA1009072A (en) 1977-04-26

Family

ID=5884325

Family Applications (1)

Application Number Title Priority Date Filing Date
CA202,631A Expired CA1009072A (en) 1973-06-18 1974-06-17 Method for determining the position of a focussing plane

Country Status (7)

Country Link
CA (1) CA1009072A (it)
CH (1) CH601773A5 (it)
FR (1) FR2233640B1 (it)
GB (1) GB1472454A (it)
IT (1) IT1011983B (it)
NL (1) NL182100C (it)
SE (1) SE399126B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315706A1 (fr) * 1975-06-26 1977-01-21 Leitz Ernst Gmbh Procede et dispositif pour la mise au point automatique d'un appareil optique comportant un reseau de detection
DE2813905A1 (de) * 1977-04-05 1978-10-12 Georges Ducommun Hilfsvorrichtung zum erkennen der umgebung durch blinde oder sehbehinderte personen
DE3039425A1 (de) * 1980-10-18 1982-05-19 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zur fotoelektrischen bestimmung der lage mindestens einer schaerfenebene eines bildes
US4310227A (en) * 1981-01-05 1982-01-12 Polaroid Corporation Diffracted energy auto-ranging system for a camera
DE3233013A1 (de) * 1982-09-06 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Optische anordnung zur erkennung und auswertung der lage eines objekts
DE3706286A1 (de) * 1987-02-26 1988-09-08 Friedrich Horst Ing Papenmeier Elektromechanische braille-zeile
RU2305525C1 (ru) * 2006-05-02 2007-09-10 Семен Григорьевич Абрамкин Прибор для ориентации в пространстве людей, лишенных зрения

Also Published As

Publication number Publication date
NL182100C (nl) 1988-01-04
SE399126B (sv) 1978-01-30
IT1011983B (it) 1977-02-10
CH601773A5 (it) 1978-07-14
SE7407984L (sv) 1974-12-19
NL7408136A (nl) 1974-12-20
FR2233640B1 (it) 1978-11-17
FR2233640A1 (it) 1975-01-10
GB1472454A (en) 1977-05-04
DE2330940B2 (de) 1976-01-02
DE2330940A1 (de) 1975-01-02

Similar Documents

Publication Publication Date Title
CA991294A (en) Object positioning
CA1032763A (en) Method for the alteration of a lens
AU508583B2 (en) Carton for liquids
AU468743B2 (en) Automatic pipettor
CA1002820A (en) Method for improving photoresist adherence
CA964631A (en) Indicateur de deroulement pour cassette de magnetophone
CA975324A (en) Reclosable can
CA1030821A (en) Desoldering tool
AU466544B2 (en) Improved tool
CA1034954A (en) Anticoagulants
CA1009072A (en) Method for determining the position of a focussing plane
CA1010320A (en) Wall means for a servomotor
CA1011074A (en) Structural beam
CA1028022A (en) Arrangement for measuring the distance between two successive objects
CA1003670A (en) Diffraction smoothing aperture for an optical beam
AU493340B2 (en) Structural beam
AU484223B2 (en) A process for the preparation of -ethynyl benzhydrols
CA995172A (en) Method for determining the interpolar distance
CA1018264A (en) Method for detecting the entry of objects into a rectricted area
AU484576B2 (en) Box beam fabrication process
CA1008260A (en) Constructional method
AU477587B2 (en) Method for the alternation of a lens
AU482660B2 (en) Direction determining method
AU483359B2 (en) A process for the preparation of eburnamonines
CA890573A (en) Method for the determination of total albumin