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GB570699A - Improvements in or relating to apparatus for testing colour blindness - Google Patents

Improvements in or relating to apparatus for testing colour blindness

Info

Publication number
GB570699A
GB570699A GB18620/43A GB1862043A GB570699A GB 570699 A GB570699 A GB 570699A GB 18620/43 A GB18620/43 A GB 18620/43A GB 1862043 A GB1862043 A GB 1862043A GB 570699 A GB570699 A GB 570699A
Authority
GB
United Kingdom
Prior art keywords
patches
monochromatic
detection
pairs
colour
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
GB18620/43A
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.)
REGINALD BURFORD MORRIS
Kodak Ltd
Original Assignee
REGINALD BURFORD MORRIS
Kodak Ltd
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 REGINALD BURFORD MORRIS, Kodak Ltd filed Critical REGINALD BURFORD MORRIS
Priority to GB18620/43A priority Critical patent/GB570699A/en
Priority to US560628A priority patent/US2453335A/en
Publication of GB570699A publication Critical patent/GB570699A/en
Priority to FR944080D priority patent/FR944080A/en
Expired 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)
  • Spectrometry And Color Measurement (AREA)

Abstract

570,699. Testing colour blindness. KODAK, Ltd., and MORRIS, R. B. Nov. 9, 1943, No. 18620. [Class 97 (i)] In an apparatus for testing the colour discrimination of the human eye, at least three pairs of colour patches are provided which can be viewed simultaneously by a single observer who is thus able to compare the matching in different pairs of patches and to select what is to him the best match without making any adjustments. For the detection of anomalous vision the colours of the patches are selected from three wave bands in the visual spectrum such that the two outer wave bands may be mixed to give a match with the middle wave band for " normal " people. As shown, the apparatus comprises a cabinet 1 having a lamp 2 and a translucent face 3 on which colour patches are held in an opaque frame. The pairs of patches 1 to 9 are for the detection of anomalous vision, those marked b being monochromatic yellow of wave length 570 to 600 mÁ and those marked a being mixtures in varying proportions of monochromatic red of wavelength over 600 mÁ and monochromatic green of wavelength 520 to 550 mÁ. The pairs of patches A, B, C are for the detection of dichromats, the colours, used being monochromatic yellow and monochromatic red of different intensities, and D, E and F for the detection of monochromats, the patches in this case being monochromatic yellow and monochromatic blue of wavelength below 520 mÁ, the brightness of the blue patches being different.
GB18620/43A 1943-11-09 1943-11-09 Improvements in or relating to apparatus for testing colour blindness Expired GB570699A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB18620/43A GB570699A (en) 1943-11-09 1943-11-09 Improvements in or relating to apparatus for testing colour blindness
US560628A US2453335A (en) 1943-11-09 1944-10-27 Color blindness chart for detecting anomalous vision, deuteranopes, protanopes, tritanopes, and monochromats
FR944080D FR944080A (en) 1943-11-09 1946-10-25 Improvements to devices for detecting color perception anomalies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18620/43A GB570699A (en) 1943-11-09 1943-11-09 Improvements in or relating to apparatus for testing colour blindness

Publications (1)

Publication Number Publication Date
GB570699A true GB570699A (en) 1945-07-18

Family

ID=10115581

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18620/43A Expired GB570699A (en) 1943-11-09 1943-11-09 Improvements in or relating to apparatus for testing colour blindness

Country Status (3)

Country Link
US (1) US2453335A (en)
FR (1) FR944080A (en)
GB (1) GB570699A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056745B (en) * 1953-09-24 1959-05-06 Funkwerk Erfurt Veb K Electric capacitor with variable capacitance, especially trimmer capacitor
NL84710C (en) * 1954-04-03
US2968212A (en) * 1957-08-12 1961-01-17 Joseph A Marano Photochromatic astigmatic slide
AT343782B (en) * 1973-07-14 1978-06-12 Rodenstock Optik G ARRANGEMENT FOR TESTING COLOR VISIBILITY
FR2520604A1 (en) * 1982-01-29 1983-08-05 Essilor Int Colour blindness determn. by LED shade equivalence - using reference shade and shade synthesised by addition of primaries combined by signal mark-space ratio adjustment
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
US5436681A (en) * 1994-04-12 1995-07-25 Michaels; Brian A. Apparatus and method for screening individuals for ametropic conditions
CN1157151C (en) * 2000-12-26 2004-07-14 陈言 Color vision detecting and correcting method and equipment and its application
EP2704000B1 (en) 2012-08-27 2022-10-26 Tata Consultancy Services Limited Dynamic image modification for a color deficient user
CN106199954B (en) * 2016-08-30 2019-03-22 陈晓冬 A kind of Optical devices and its design method for correcting the weak colour blindness of blue yellow

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1629330A (en) * 1924-07-12 1927-05-17 Hazel H Adler Color-harmony device
US1973968A (en) * 1933-01-23 1934-09-18 Combustion Eng Corp Waste heat boiler
GB441758A (en) * 1935-09-14 1936-01-24 Karl Schur Improvements in sight-testing cards
US2165169A (en) * 1936-09-28 1939-07-04 Means for determining the primaries

Also Published As

Publication number Publication date
US2453335A (en) 1948-11-09
FR944080A (en) 1949-03-25

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