FR2520604B1 - - Google Patents

Info

Publication number
FR2520604B1
FR2520604B1 FR8201448A FR8201448A FR2520604B1 FR 2520604 B1 FR2520604 B1 FR 2520604B1 FR 8201448 A FR8201448 A FR 8201448A FR 8201448 A FR8201448 A FR 8201448A FR 2520604 B1 FR2520604 B1 FR 2520604B1
Authority
FR
France
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
FR8201448A
Other languages
French (fr)
Other versions
FR2520604A1 (en
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.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
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 Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Priority to FR8201448A priority Critical patent/FR2520604A1/en
Publication of FR2520604A1 publication Critical patent/FR2520604A1/en
Application granted granted Critical
Publication of FR2520604B1 publication Critical patent/FR2520604B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/06—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision
    • A61B3/066—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision for testing colour vision

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)
FR8201448A 1982-01-29 1982-01-29 Colour blindness determn. by LED shade equivalence - using reference shade and shade synthesised by addition of primaries combined by signal mark-space ratio adjustment Granted FR2520604A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8201448A FR2520604A1 (en) 1982-01-29 1982-01-29 Colour blindness determn. by LED shade equivalence - using reference shade and shade synthesised by addition of primaries combined by signal mark-space ratio adjustment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8201448A FR2520604A1 (en) 1982-01-29 1982-01-29 Colour blindness determn. by LED shade equivalence - using reference shade and shade synthesised by addition of primaries combined by signal mark-space ratio adjustment

Publications (2)

Publication Number Publication Date
FR2520604A1 FR2520604A1 (en) 1983-08-05
FR2520604B1 true FR2520604B1 (en) 1984-04-27

Family

ID=9270476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8201448A Granted FR2520604A1 (en) 1982-01-29 1982-01-29 Colour blindness determn. by LED shade equivalence - using reference shade and shade synthesised by addition of primaries combined by signal mark-space ratio adjustment

Country Status (1)

Country Link
FR (1) FR2520604A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314171A1 (en) * 1983-04-19 1983-10-20 Franz Dr.med. 2370 Rendsburg Bolle ELECTRONIC DEVICE FOR EXAMINING THE HUMAN COLOR SENSE
US4765731A (en) * 1986-03-21 1988-08-23 John J. Ferlazzo Solid state color vision testing system
US4848898A (en) * 1987-06-30 1989-07-18 Lkc Technologies, Inc. Apparatus for testing color vision
DE9100027U1 (en) * 1991-01-03 1991-03-21 Oculus Optikgeräte GmbH, 6330 Wetzlar Anomaloscope
WO2004086961A1 (en) * 2003-04-04 2004-10-14 Werner Reis Device for studying colour response

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB570699A (en) * 1943-11-09 1945-07-18 Kodak Ltd Improvements in or relating to apparatus for testing colour blindness
US3947099A (en) * 1975-01-02 1976-03-30 American Optical Corporation Solid state color anomaloscope
IT1053342B (en) * 1975-02-22 1981-08-31 Rodenstock Optik G PERIMETRIC OPHTHALMIC EXAMINATION APPARATUS
DE2602304C3 (en) * 1976-01-22 1978-07-06 Rolf Dr. 4390 Gladbeck Esser Device for examining the sense of color

Also Published As

Publication number Publication date
FR2520604A1 (en) 1983-08-05

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Legal Events

Date Code Title Description
ST Notification of lapse