JPS6120292B2 - - Google Patents

Info

Publication number
JPS6120292B2
JPS6120292B2 JP52102482A JP10248277A JPS6120292B2 JP S6120292 B2 JPS6120292 B2 JP S6120292B2 JP 52102482 A JP52102482 A JP 52102482A JP 10248277 A JP10248277 A JP 10248277A JP S6120292 B2 JPS6120292 B2 JP S6120292B2
Authority
JP
Japan
Prior art keywords
code
disc
projector
rotation
projector according
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
JP52102482A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5367988A (en
Inventor
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.)
OPUTEITSUSHE UERUKE GEE ROODENSUTOTSUKU
Original Assignee
OPUTEITSUSHE UERUKE GEE ROODENSUTOTSUKU
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 OPUTEITSUSHE UERUKE GEE ROODENSUTOTSUKU filed Critical OPUTEITSUSHE UERUKE GEE ROODENSUTOTSUKU
Publication of JPS5367988A publication Critical patent/JPS5367988A/ja
Publication of JPS6120292B2 publication Critical patent/JPS6120292B2/ja
Granted 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
    • 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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Projection Apparatus (AREA)
  • Details Of Television Systems (AREA)
  • Input From Keyboards Or The Like (AREA)
JP10248277A 1976-11-25 1977-08-26 Projector for projecting test drawing to inspect eyesight Granted JPS5367988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762653471 DE2653471C3 (de) 1976-11-25 1976-11-25 Projektor zum Projizieren von Testdarstellungen für Augenuntersuchungen

Publications (2)

Publication Number Publication Date
JPS5367988A JPS5367988A (en) 1978-06-16
JPS6120292B2 true JPS6120292B2 (enExample) 1986-05-21

Family

ID=5993908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10248277A Granted JPS5367988A (en) 1976-11-25 1977-08-26 Projector for projecting test drawing to inspect eyesight

Country Status (8)

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

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 (ja) * 1985-07-17 1987-01-27 株式会社トプコン山形 検眼チヤ−ト投影機
CN109512377B (zh) * 2018-10-25 2021-05-25 陕西省人民医院 一种红绿色盲疾病检查盘

Also Published As

Publication number Publication date
IT1106647B (it) 1985-11-11
GB1538630A (en) 1979-01-24
JPS5367988A (en) 1978-06-16
DE2653471C3 (de) 1979-10-31
DE2653471A1 (de) 1978-06-01
CH624566A5 (en) 1981-08-14
DE2653471B2 (de) 1979-03-15
DD132921A1 (de) 1978-11-22
ES462864A1 (es) 1978-06-01
FR2371910A1 (enExample) 1978-06-23

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