JPS5525281Y2 - - Google Patents

Info

Publication number
JPS5525281Y2
JPS5525281Y2 JP1976011220U JP1122076U JPS5525281Y2 JP S5525281 Y2 JPS5525281 Y2 JP S5525281Y2 JP 1976011220 U JP1976011220 U JP 1976011220U JP 1122076 U JP1122076 U JP 1122076U JP S5525281 Y2 JPS5525281 Y2 JP S5525281Y2
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.)
Expired
Application number
JP1976011220U
Other languages
Japanese (ja)
Other versions
JPS52105897U (cg-RX-API-DMAC7.html
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 filed Critical
Priority to JP1976011220U priority Critical patent/JPS5525281Y2/ja
Priority to US05/762,338 priority patent/US4094592A/en
Publication of JPS52105897U publication Critical patent/JPS52105897U/ja
Application granted granted Critical
Publication of JPS5525281Y2 publication Critical patent/JPS5525281Y2/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)
JP1976011220U 1976-02-03 1976-02-03 Expired JPS5525281Y2 (cg-RX-API-DMAC7.html)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1976011220U JPS5525281Y2 (cg-RX-API-DMAC7.html) 1976-02-03 1976-02-03
US05/762,338 US4094592A (en) 1976-02-03 1977-01-25 Ophthalmic examination chart projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976011220U JPS5525281Y2 (cg-RX-API-DMAC7.html) 1976-02-03 1976-02-03

Publications (2)

Publication Number Publication Date
JPS52105897U JPS52105897U (cg-RX-API-DMAC7.html) 1977-08-11
JPS5525281Y2 true JPS5525281Y2 (cg-RX-API-DMAC7.html) 1980-06-18

Family

ID=11771874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1976011220U Expired JPS5525281Y2 (cg-RX-API-DMAC7.html) 1976-02-03 1976-02-03

Country Status (2)

Country Link
US (1) US4094592A (cg-RX-API-DMAC7.html)
JP (1) JPS5525281Y2 (cg-RX-API-DMAC7.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050018138A1 (en) * 2003-07-23 2005-01-27 Robert Grainger Advanced astigmatism testing method
US11389057B2 (en) * 2017-09-28 2022-07-19 Essilor International Vision measurement device and method of measuring vision using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570652A (en) * 1949-05-04 1951-10-09 James J Dilks Picture disk viewing projector
US3143037A (en) * 1962-02-23 1964-08-04 Eastman Kodak Co Slide projector interlock system for the slide-changing and editing mechanisms
JPS4222361Y1 (cg-RX-API-DMAC7.html) * 1965-02-01 1967-12-20
US3655276A (en) * 1969-10-31 1972-04-11 American Optical Corp Ophthalmic refracting chart projector
FR2066108A5 (cg-RX-API-DMAC7.html) * 1969-10-31 1971-08-06 Agfa Gevaert Ag
JPS471586U (cg-RX-API-DMAC7.html) * 1971-01-13 1972-08-17
JPS4926290U (cg-RX-API-DMAC7.html) * 1972-06-08 1974-03-06

Also Published As

Publication number Publication date
JPS52105897U (cg-RX-API-DMAC7.html) 1977-08-11
US4094592A (en) 1978-06-13

Similar Documents

Publication Publication Date Title
DK137505C (cg-RX-API-DMAC7.html)
DK139279C (cg-RX-API-DMAC7.html)
DK136579C (cg-RX-API-DMAC7.html)
DE2653698C3 (cg-RX-API-DMAC7.html)
JPS5525281Y2 (cg-RX-API-DMAC7.html)
CS190860B1 (cg-RX-API-DMAC7.html)
JPS5381616U (cg-RX-API-DMAC7.html)
DK138827C (cg-RX-API-DMAC7.html)
JPS5345149U (cg-RX-API-DMAC7.html)
JPS5393892U (cg-RX-API-DMAC7.html)
JPS52157715U (cg-RX-API-DMAC7.html)
JPS5731253Y2 (cg-RX-API-DMAC7.html)
JPS52119812U (cg-RX-API-DMAC7.html)
JPS537805U (cg-RX-API-DMAC7.html)
JPS52115804U (cg-RX-API-DMAC7.html)
JPS51163344U (cg-RX-API-DMAC7.html)
JPS5338331U (cg-RX-API-DMAC7.html)
JPS5343108U (cg-RX-API-DMAC7.html)
JPS5344693U (cg-RX-API-DMAC7.html)
CS177772B1 (cg-RX-API-DMAC7.html)
DE7603645U1 (cg-RX-API-DMAC7.html)
JPS52130944U (cg-RX-API-DMAC7.html)
CS190853B1 (cg-RX-API-DMAC7.html)
JPS5328591U (cg-RX-API-DMAC7.html)
CS192684B1 (cg-RX-API-DMAC7.html)