FR1431831A - Système optique pour ophtalmomètres à mires fixes - Google Patents
Système optique pour ophtalmomètres à mires fixesInfo
- Publication number
- FR1431831A FR1431831A FR45551A FR69045551A FR1431831A FR 1431831 A FR1431831 A FR 1431831A FR 45551 A FR45551 A FR 45551A FR 69045551 A FR69045551 A FR 69045551A FR 1431831 A FR1431831 A FR 1431831A
- Authority
- FR
- France
- Prior art keywords
- ophthalmometers
- target
- fixed
- optical system
- 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
Links
- 230000003287 optical effect Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/255—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring radius of curvature
-
- 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)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US504281A US3511561A (en) | 1966-01-11 | 1965-10-18 | Optical system for ophthalmometers provided with stationary sighting marks |
GB46705/65A GB1132336A (en) | 1966-01-11 | 1965-11-04 | Ophthalmometers provided with stationary sighting marks |
FR45551A FR1431831A (fr) | 1966-01-11 | 1966-01-11 | Système optique pour ophtalmomètres à mires fixes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR45551A FR1431831A (fr) | 1966-01-11 | 1966-01-11 | Système optique pour ophtalmomètres à mires fixes |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1431831A true FR1431831A (fr) | 1966-03-18 |
Family
ID=9694476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR45551A Expired FR1431831A (fr) | 1966-01-11 | 1966-01-11 | Système optique pour ophtalmomètres à mires fixes |
Country Status (3)
Country | Link |
---|---|
US (1) | US3511561A (fr) |
FR (1) | FR1431831A (fr) |
GB (1) | GB1132336A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3869206A (en) * | 1970-09-28 | 1975-03-04 | Joseph S Nupuf | Ophthalmometer device |
US3778135A (en) * | 1972-11-29 | 1973-12-11 | American Optical Corp | Ophthalmometer having alternative viewing and measuring systems and including an improved illumination system |
US3791720A (en) * | 1972-11-29 | 1974-02-12 | Optical Corp | Ophthalmometer having alternative viewing and measuring systems and including an improved illumination system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733634A (en) * | 1956-02-07 | Ophthalmometer | ||
US1721208A (en) * | 1922-12-18 | 1929-07-16 | American Optical Corp | Eye-examining instrument |
US1750931A (en) * | 1927-07-07 | 1930-03-18 | Carl F Lomb | Ophthalmometer |
US1918540A (en) * | 1930-03-12 | 1933-07-18 | Zeiss Carl Fa | Instrument for measuring the curvature of the cornea |
US2078586A (en) * | 1933-12-23 | 1937-04-27 | Zeiss Carl Fa | Device for illuminating microscopic objects |
US2107305A (en) * | 1934-03-02 | 1938-02-08 | Dartmouth College | Adjustable lens system |
US2179850A (en) * | 1937-03-17 | 1939-11-14 | American Optical Corp | Optical system for measuring changes in magnification |
-
1965
- 1965-10-18 US US504281A patent/US3511561A/en not_active Expired - Lifetime
- 1965-11-04 GB GB46705/65A patent/GB1132336A/en not_active Expired
-
1966
- 1966-01-11 FR FR45551A patent/FR1431831A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3511561A (en) | 1970-05-12 |
GB1132336A (en) | 1968-10-30 |
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