DD132921A1 - PROJECTOR FOR PROJECTING TEST REPRESENTATIONS FOR EYE EXAMINATIONS - Google Patents

PROJECTOR FOR PROJECTING TEST REPRESENTATIONS FOR EYE EXAMINATIONS

Info

Publication number
DD132921A1
DD132921A1 DD20221977A DD20221977A DD132921A1 DD 132921 A1 DD132921 A1 DD 132921A1 DD 20221977 A DD20221977 A DD 20221977A DD 20221977 A DD20221977 A DD 20221977A DD 132921 A1 DD132921 A1 DD 132921A1
Authority
DD
German Democratic Republic
Prior art keywords
projector
eye examinations
projecting test
test representations
representations
Prior art date
Application number
DD20221977A
Other languages
German (de)
Inventor
Manfred Born
Original Assignee
Rodenstock Optik G
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 Rodenstock Optik G filed Critical Rodenstock Optik G
Publication of DD132921A1 publication Critical patent/DD132921A1/en

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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/42—Servomotor, servo controller kind till VSS
    • G05B2219/42212—Rotation over, selection of smallest, shortest angle, distance

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Projection Apparatus (AREA)
  • Details Of Television Systems (AREA)
DD20221977A 1976-11-25 1977-11-23 PROJECTOR FOR PROJECTING TEST REPRESENTATIONS FOR EYE EXAMINATIONS DD132921A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762653471 DE2653471C3 (en) 1976-11-25 1976-11-25 Projector for projecting test images for eye exams

Publications (1)

Publication Number Publication Date
DD132921A1 true DD132921A1 (en) 1978-11-22

Family

ID=5993908

Family Applications (1)

Application Number Title Priority Date Filing Date
DD20221977A DD132921A1 (en) 1976-11-25 1977-11-23 PROJECTOR FOR PROJECTING TEST REPRESENTATIONS FOR EYE EXAMINATIONS

Country Status (8)

Country Link
JP (1) JPS5367988A (en)
CH (1) CH624566A5 (en)
DD (1) DD132921A1 (en)
DE (1) DE2653471C3 (en)
ES (1) ES462864A1 (en)
FR (1) FR2371910A1 (en)
GB (1) GB1538630A (en)
IT (1) IT1106647B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420229A (en) * 1981-02-13 1983-12-13 Clement Clark International Ltd. Ophthalmic instruments
JPS6219144A (en) * 1985-07-17 1987-01-27 株式会社トプコン山形 Eye examination chart projector
CN109512377B (en) * 2018-10-25 2021-05-25 陕西省人民医院 Anerythrochloropsia disease inspection dish

Also Published As

Publication number Publication date
GB1538630A (en) 1979-01-24
IT1106647B (en) 1985-11-11
ES462864A1 (en) 1978-06-01
DE2653471C3 (en) 1979-10-31
CH624566A5 (en) 1981-08-14
JPS6120292B2 (en) 1986-05-21
FR2371910A1 (en) 1978-06-23
DE2653471A1 (en) 1978-06-01
JPS5367988A (en) 1978-06-16
DE2653471B2 (en) 1979-03-15

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