NL7408136A - DEVICE FOR THE PHOTO-ELECTRICAL DETERMINATION OF THE LOCATION OF AT LEAST ONE FOCUS OF AN IMAGE WITHIN AN OPTICAL DEVICE. - Google Patents

DEVICE FOR THE PHOTO-ELECTRICAL DETERMINATION OF THE LOCATION OF AT LEAST ONE FOCUS OF AN IMAGE WITHIN AN OPTICAL DEVICE.

Info

Publication number
NL7408136A
NL7408136A NL7408136A NL7408136A NL7408136A NL 7408136 A NL7408136 A NL 7408136A NL 7408136 A NL7408136 A NL 7408136A NL 7408136 A NL7408136 A NL 7408136A NL 7408136 A NL7408136 A NL 7408136A
Authority
NL
Netherlands
Prior art keywords
photo
focus
location
image
optical device
Prior art date
Application number
NL7408136A
Other languages
Dutch (nl)
Other versions
NL182100C (en
Inventor
Ludwig Leitz
Knut Heitmann
Eckart Schneider
Klaus D Schaefer
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 DE19732330940 external-priority patent/DE2330940C3/en
Application filed by Leitz Ernst Gmbh filed Critical Leitz Ernst Gmbh
Publication of NL7408136A publication Critical patent/NL7408136A/en
Application granted granted Critical
Publication of NL182100C publication Critical patent/NL182100C/en

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)
NLAANVRAGE7408136,A 1973-06-18 1974-06-18 Apparatus for photoelectrically determining the location of at least one focus area of an image within an optical device. NL182100C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732330940 DE2330940C3 (en) 1973-06-18 Method and device for photoelectrically determining the position of at least one focal plane of an image

Publications (2)

Publication Number Publication Date
NL7408136A true NL7408136A (en) 1974-12-20
NL182100C NL182100C (en) 1988-01-04

Family

ID=5884325

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7408136,A NL182100C (en) 1973-06-18 1974-06-18 Apparatus for photoelectrically determining the location of at least one focus area of an image within an optical device.

Country Status (7)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315706A1 (en) * 1975-06-26 1977-01-21 Leitz Ernst Gmbh METHOD AND DEVICE FOR AUTOMATIC FOCUSING OF AN OPTICAL APPARATUS INCLUDING A DETECTION NETWORK
DE2813905A1 (en) * 1977-04-05 1978-10-12 Georges Ducommun AID DEVICE FOR DETECTING THE SURROUNDINGS BY THE BLIND OR VISUALLY IMPAIRED PERSONS
DE3039425A1 (en) * 1980-10-18 1982-05-19 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar DEVICE FOR PHOTOELECTRICALLY DETERMINING THE POSITION OF AT LEAST ONE FOCUS OF AN IMAGE
US4310227A (en) * 1981-01-05 1982-01-12 Polaroid Corporation Diffracted energy auto-ranging system for a camera
DE3233013A1 (en) * 1982-09-06 1984-03-08 Siemens AG, 1000 Berlin und 8000 München OPTICAL ARRANGEMENT FOR DETECTING AND EVALUATING THE LOCATION OF AN OBJECT
DE3706286A1 (en) * 1987-02-26 1988-09-08 Friedrich Horst Ing Papenmeier ELECTROMECHANICAL BRAILLE LINE

Also Published As

Publication number Publication date
SE399126B (en) 1978-01-30
IT1011983B (en) 1977-02-10
DE2330940A1 (en) 1975-01-02
CH601773A5 (en) 1978-07-14
NL182100C (en) 1988-01-04
FR2233640A1 (en) 1975-01-10
FR2233640B1 (en) 1978-11-17
CA1009072A (en) 1977-04-26
GB1472454A (en) 1977-05-04
DE2330940B2 (en) 1976-01-02
SE7407984L (en) 1974-12-19

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BK Erratum

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