JPS6147530B2 - - Google Patents

Info

Publication number
JPS6147530B2
JPS6147530B2 JP54052242A JP5224279A JPS6147530B2 JP S6147530 B2 JPS6147530 B2 JP S6147530B2 JP 54052242 A JP54052242 A JP 54052242A JP 5224279 A JP5224279 A JP 5224279A JP S6147530 B2 JPS6147530 B2 JP S6147530B2
Authority
JP
Japan
Prior art keywords
projection
optical path
lens
optometry
imaging optical
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
JP54052242A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55143127A (en
Inventor
Mitsugi Aoki
Yoshinori Oana
Yasuo Kato
Taketoshi Ishihara
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.)
Tokyo Optical Co Ltd
Original Assignee
Tokyo Optical Co Ltd
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 Tokyo Optical Co Ltd filed Critical Tokyo Optical Co Ltd
Priority to JP5224279A priority Critical patent/JPS55143127A/ja
Priority to US06/142,230 priority patent/US4299455A/en
Publication of JPS55143127A publication Critical patent/JPS55143127A/ja
Publication of JPS6147530B2 publication Critical patent/JPS6147530B2/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

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)
JP5224279A 1979-04-27 1979-04-27 Ophthalmoscopy device which can inspect at near distance Granted JPS55143127A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5224279A JPS55143127A (en) 1979-04-27 1979-04-27 Ophthalmoscopy device which can inspect at near distance
US06/142,230 US4299455A (en) 1979-04-27 1980-04-21 Vision testing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5224279A JPS55143127A (en) 1979-04-27 1979-04-27 Ophthalmoscopy device which can inspect at near distance

Publications (2)

Publication Number Publication Date
JPS55143127A JPS55143127A (en) 1980-11-08
JPS6147530B2 true JPS6147530B2 (en, 2012) 1986-10-20

Family

ID=12909247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5224279A Granted JPS55143127A (en) 1979-04-27 1979-04-27 Ophthalmoscopy device which can inspect at near distance

Country Status (2)

Country Link
US (1) US4299455A (en, 2012)
JP (1) JPS55143127A (en, 2012)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315939A1 (de) * 1983-05-02 1984-11-08 Oculus-Optikgeräte GmbH, 6330 Wetzlar Vorrichtung zur augenfraktionsbestimmung
DE9017409U1 (de) * 1990-12-22 1991-04-25 Oculus Optikgeräte GmbH, 6330 Wetzlar Einrichtung für Sehtests
JPH06277180A (ja) * 1994-01-17 1994-10-04 Topcon Corp 自覚式検眼装置
EP3298952B1 (en) * 2016-09-22 2019-07-17 Essilor International Optometry device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179196A (en) * 1977-09-30 1979-12-18 American Optical Corporation Compact subjective refractive instrument

Also Published As

Publication number Publication date
JPS55143127A (en) 1980-11-08
US4299455A (en) 1981-11-10

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