GB1055647A - Sight testing apparatus - Google Patents

Sight testing apparatus

Info

Publication number
GB1055647A
GB1055647A GB4007963A GB4007963A GB1055647A GB 1055647 A GB1055647 A GB 1055647A GB 4007963 A GB4007963 A GB 4007963A GB 4007963 A GB4007963 A GB 4007963A GB 1055647 A GB1055647 A GB 1055647A
Authority
GB
United Kingdom
Prior art keywords
testing apparatus
signs
sight testing
rodenstock
oct
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
GB4007963A
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.)
RUDOLPH RODENSTOCK
Original Assignee
RUDOLPH RODENSTOCK
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 RUDOLPH RODENSTOCK filed Critical RUDOLPH RODENSTOCK
Publication of GB1055647A publication Critical patent/GB1055647A/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
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors

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)
  • Manufacturing Optical Record Carriers (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

1,055,647. Sight testing apparatus. R. RODENSTOCK, [trading as OPTISCHE WERKE G. RODENSTOCK]. Oct. 10, 1963 [Oct. 10, 1962], No.40079/63. Heading G2J. A sight testing apparatus comprises a disc 6, having a plurality of pairs of test signs thereon and recesses or a hole at the centre, which is inserted into a slot in a housing 3 and retained by balls 7, 8, one of which is resiliently mounted, entering the recesses or the ends of the hole. The signs are illuminated by a lamp 9, the images reflected by a mirror 5, and observed after passing through a pair of lenses 4. Discs having different series of signs may be interchanged with one another.
GB4007963A 1962-10-10 1963-10-10 Sight testing apparatus Expired GB1055647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1962O0006742 DE1870093U (en) 1962-10-10 1962-10-10 VISUAL EXAMINER.

Publications (1)

Publication Number Publication Date
GB1055647A true GB1055647A (en) 1967-01-18

Family

ID=7350955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4007963A Expired GB1055647A (en) 1962-10-10 1963-10-10 Sight testing apparatus

Country Status (2)

Country Link
DE (1) DE1870093U (en)
GB (1) GB1055647A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543903C3 (en) * 1975-10-01 1981-09-03 Reiner, Josef, Priv.-Doz. Dr., 5000 Köln Device for testing ametropia

Also Published As

Publication number Publication date
DE1870093U (en) 1963-04-11

Similar Documents

Publication Publication Date Title
GB941696A (en) Electrically operated display apparatus
GB1055647A (en) Sight testing apparatus
GB1460158A (en) Instrument for determining the characteristics of a lens
CA598683A (en) Eye testing instruments
GB1428832A (en) Ophthalmometer and fixation device for use therewith
GB947359A (en) Indicating means for phoropters
ES414130A1 (en) Light shifting system for use in an optical instrument, such as a spectrophotometer
JPS53141582A (en) Character test system of semiconductor device
GB871488A (en) Magnifying lens
GB553988A (en) Improvements in or relating to measuring and indicating instruments
GB1045485A (en) Improvements in sight-testing apparatus
GB458106A (en) Improvements in instruments for testing for colour perception
JPS5256839A (en) Value carrier registering machine
US1697205A (en) Eye-testing device
GB583703A (en) An improved holder for transparencies for optical projection or viewing
GB1221059A (en) Improvements in or relating to didactic apparatus
FR2293759A1 (en) Illuminated spectacle display unit - has several translucent vertical rotatable support elements enclosing fluorescent tubes
GB575595A (en) Improvements in a centrometer for measuring the relative location of human eyes
GB1132273A (en) An ophthalmoscope
GB1174449A (en) Apparatus for Measuring Astigmatism.
GB882010A (en) Projection display apparatus
GB1176812A (en) Binocular Sight Testing Apparatus.
Corballis et al. Channel by channel report of visually presented “Stroop” items
GB1217092A (en) Assembly apparatus using optical aids
GB554900A (en) Apparatus for teaching the morse code