JPS5167691A - - Google Patents

Info

Publication number
JPS5167691A
JPS5167691A JP50118711A JP11871175A JPS5167691A JP S5167691 A JPS5167691 A JP S5167691A JP 50118711 A JP50118711 A JP 50118711A JP 11871175 A JP11871175 A JP 11871175A JP S5167691 A JPS5167691 A JP S5167691A
Authority
JP
Japan
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.)
Granted
Application number
JP50118711A
Other versions
JPS5421680B2 (ja
Inventor
Taihinaa Otobarudo
Boon Manfuretsudo
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.)
Optische Werke G Rodenstock
Original Assignee
Optische Werke G 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
Priority claimed from DE19742451750 external-priority patent/DE2451750C3/de
Application filed by Optische Werke G Rodenstock filed Critical Optische Werke G Rodenstock
Publication of JPS5167691A publication Critical patent/JPS5167691A/ja
Publication of JPS5421680B2 publication Critical patent/JPS5421680B2/ja
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)
  • Eye Examination Apparatus (AREA)
  • Projection Apparatus (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
JP11871175A 1974-10-31 1975-10-01 Expired JPS5421680B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742451750 DE2451750C3 (de) 1974-10-31 Testscheibe für Augenuntersuchungsgeräte

Publications (2)

Publication Number Publication Date
JPS5167691A true JPS5167691A (ja) 1976-06-11
JPS5421680B2 JPS5421680B2 (ja) 1979-08-01

Family

ID=5929702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11871175A Expired JPS5421680B2 (ja) 1974-10-31 1975-10-01

Country Status (6)

Country Link
US (1) US4053212A (ja)
JP (1) JPS5421680B2 (ja)
DD (1) DD124767A1 (ja)
ES (1) ES441172A1 (ja)
FR (1) FR2289148A1 (ja)
IT (1) IT1048068B (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7390091B2 (en) * 2005-04-29 2008-06-24 Sperian Protection Optical, Inc. Vision testing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219557U (ja) * 1975-07-31 1977-02-12

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1698013A (en) * 1924-09-13 1929-01-08 Zeng Standard Company De Projection device
US2357593A (en) * 1941-09-24 1944-09-05 Ullin W Leavell Method and apparatus for teaching reading
US3486813A (en) * 1967-05-05 1969-12-30 Tracor Vision testing device
US3807839A (en) * 1972-01-28 1974-04-30 Calspan Corp Dynamic visual acuity testing apparatus
US3910690A (en) * 1972-02-02 1975-10-07 Wilkinson Sword Ltd Method and apparatus for determining visual acuity in a human subject

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219557U (ja) * 1975-07-31 1977-02-12

Also Published As

Publication number Publication date
FR2289148A1 (fr) 1976-05-28
DE2451750B2 (de) 1976-11-11
DD124767A1 (ja) 1977-03-16
FR2289148B1 (ja) 1981-08-21
US4053212A (en) 1977-10-11
IT1048068B (it) 1980-11-20
DE2451750A1 (de) 1976-05-06
ES441172A1 (es) 1977-03-16
JPS5421680B2 (ja) 1979-08-01

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