JPS57197404A - Measuring method of radius of curvature - Google Patents

Measuring method of radius of curvature

Info

Publication number
JPS57197404A
JPS57197404A JP56082023A JP8202381A JPS57197404A JP S57197404 A JPS57197404 A JP S57197404A JP 56082023 A JP56082023 A JP 56082023A JP 8202381 A JP8202381 A JP 8202381A JP S57197404 A JPS57197404 A JP S57197404A
Authority
JP
Japan
Prior art keywords
lens
objective lens
curvature
radius
luminance
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.)
Granted
Application number
JP56082023A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0154055B2 (en, 2012
Inventor
Masao Noda
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.)
Nikon Corp
Original Assignee
Nikon Corp
Nippon Kogaku KK
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP56082023A priority Critical patent/JPS57197404A/ja
Priority to US06/379,552 priority patent/US4572628A/en
Publication of JPS57197404A publication Critical patent/JPS57197404A/ja
Publication of JPH0154055B2 publication Critical patent/JPH0154055B2/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
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/107—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining the shape or measuring the curvature of the cornea

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)
  • Length Measuring Devices By Optical Means (AREA)
  • Eye Examination Apparatus (AREA)
JP56082023A 1981-05-29 1981-05-29 Measuring method of radius of curvature Granted JPS57197404A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56082023A JPS57197404A (en) 1981-05-29 1981-05-29 Measuring method of radius of curvature
US06/379,552 US4572628A (en) 1981-05-29 1982-05-18 Method of and apparatus for measuring radius

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56082023A JPS57197404A (en) 1981-05-29 1981-05-29 Measuring method of radius of curvature

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP3292738A Division JPH0757218B2 (ja) 1991-11-08 1991-11-08 曲率半径の測定装置

Publications (2)

Publication Number Publication Date
JPS57197404A true JPS57197404A (en) 1982-12-03
JPH0154055B2 JPH0154055B2 (en, 2012) 1989-11-16

Family

ID=13762923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56082023A Granted JPS57197404A (en) 1981-05-29 1981-05-29 Measuring method of radius of curvature

Country Status (1)

Country Link
JP (1) JPS57197404A (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05329103A (ja) * 1991-07-29 1993-12-14 Topcon Corp 眼科機械用アライメント装置
US5416538A (en) * 1992-10-29 1995-05-16 Nikon Corporation Object-surface-shape measuring apparatus
JPH09276223A (ja) * 1996-04-12 1997-10-28 Nikon Corp 曲率測定装置および曲率測定方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50878A (en, 2012) * 1973-05-01 1975-01-07
JPS5414758A (en) * 1977-07-05 1979-02-03 Humphrey Instruments Inc Lens meter using nonnparallel beams
JPS5414757A (en) * 1977-07-05 1979-02-03 Humphrey Instruments Inc Lens meter
JPS558800A (en) * 1978-06-28 1980-01-22 Humphrey Instruments Inc Optical correcting method
JPS5618837A (en) * 1979-07-23 1981-02-23 Canon Kk Keratometer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50878A (en, 2012) * 1973-05-01 1975-01-07
JPS5414758A (en) * 1977-07-05 1979-02-03 Humphrey Instruments Inc Lens meter using nonnparallel beams
JPS5414757A (en) * 1977-07-05 1979-02-03 Humphrey Instruments Inc Lens meter
JPS558800A (en) * 1978-06-28 1980-01-22 Humphrey Instruments Inc Optical correcting method
JPS5618837A (en) * 1979-07-23 1981-02-23 Canon Kk Keratometer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05329103A (ja) * 1991-07-29 1993-12-14 Topcon Corp 眼科機械用アライメント装置
US5416538A (en) * 1992-10-29 1995-05-16 Nikon Corporation Object-surface-shape measuring apparatus
JPH09276223A (ja) * 1996-04-12 1997-10-28 Nikon Corp 曲率測定装置および曲率測定方法

Also Published As

Publication number Publication date
JPH0154055B2 (en, 2012) 1989-11-16

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