FR2372424A1 - - Google Patents
Info
- Publication number
- FR2372424A1 FR2372424A1 FR7735890A FR7735890A FR2372424A1 FR 2372424 A1 FR2372424 A1 FR 2372424A1 FR 7735890 A FR7735890 A FR 7735890A FR 7735890 A FR7735890 A FR 7735890A FR 2372424 A1 FR2372424 A1 FR 2372424A1
- Authority
- FR
- France
- Prior art keywords
- circuit
- scale
- spectacles
- glasses
- circular
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
- G01M11/0235—Testing optical properties by measuring refractive power by measuring multiple properties of lenses, automatic lens meters
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
L'invention concerne un appareil de mesure de lentilles ou verres pour lunettes. Selon l'invention, on prévoit un système d'affichage de dioptries comprenant un codeur linéaire se composant d'une échelle coulissante 111, d'une échelle fixe 112, de deux projecteurs de lumière 113, de deux récepteurs de lumière 114, un premier circuit, un second circuit et un circuit de changement de S à C; on prévoit de plus un système d'affichage de Ax comprenant un codeur rotatif, un troisième circuit et un circuit de transposition du signe de C et de la forme du cylindre; le codeur rotatif comportant une échelle plane circulaire et rotative 211, une échelle plane circulaire et fixe 212, deux projecteurs de lumière 213, deux récepteurs de lumière 214; le troisième circuit comporte un affichage 223. L'invention permet notamment de déterminer les propriétés ophaltalmiques des verres pour lunettes ou lentilles.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14453376A JPS5369058A (en) | 1976-11-30 | 1976-11-30 | Lens meter |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2372424A1 true FR2372424A1 (fr) | 1978-06-23 |
FR2372424B1 FR2372424B1 (fr) | 1980-10-17 |
Family
ID=15364519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7735890A Expired FR2372424B1 (fr) | 1976-11-30 | 1977-11-29 |
Country Status (9)
Country | Link |
---|---|
US (1) | US4203666A (fr) |
JP (1) | JPS5369058A (fr) |
AU (1) | AU508154B2 (fr) |
CA (1) | CA1078171A (fr) |
DE (1) | DE2752696C3 (fr) |
FR (1) | FR2372424B1 (fr) |
GB (1) | GB1586679A (fr) |
IT (1) | IT1088513B (fr) |
NL (1) | NL174761C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2501372A1 (fr) * | 1981-03-05 | 1982-09-10 | Tokyo Optical | Focometre |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5687836A (en) * | 1979-12-19 | 1981-07-16 | Tokyo Optical Co Ltd | Projection type lens meter |
US4741617A (en) * | 1986-11-10 | 1988-05-03 | Hughes Aircraft Company | Method and apparatus for measuring, magnification power of a magnifying aid |
US4767215A (en) * | 1986-06-09 | 1988-08-30 | Ateoq Corporation | Lens characterization apparatus and method |
FR2984565A1 (fr) * | 2011-12-19 | 2013-06-21 | Thomson Licensing | Procede et dispositif d'estimation de la puissance optique des lentilles de verres correcteurs d'une paire de lunettes portee par un spectateur. |
US20130321773A1 (en) * | 2012-06-05 | 2013-12-05 | Cheng-Chung Lee | Optometric Automatic Test Device and Method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1005749A (fr) * | 1947-09-17 | 1952-04-15 | Desgranges & Huot | Perfectionnements apportés aux dispositifs pour mesurer la puissance de lentilles et de systèmes optiques |
US3360660A (en) * | 1965-04-07 | 1967-12-26 | Gen Motors Corp | Position and rate readout system with dual phase-displaced gratings |
GB1147452A (en) * | 1965-03-30 | 1969-04-02 | Hanwell Optical Company Ltd | Improvements in or relating to focimeters |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3136839A (en) * | 1958-09-16 | 1964-06-09 | Safir Aran | Apparatus for objectively testing an optical system |
US3378677A (en) * | 1965-10-04 | 1968-04-16 | Ibm | Serial divider |
US3723748A (en) * | 1971-06-23 | 1973-03-27 | Ibm | Digital tachometer with symmetrical output |
US3749925A (en) * | 1971-12-01 | 1973-07-31 | Iomec | Opto-electronic transducer for position initialization of a linear motion mechanism |
US3832066A (en) * | 1972-10-27 | 1974-08-27 | Acuity Syst Inc | Apparatus and method for analyzing sphero-cylindrical optical systems |
JPS5242389B2 (fr) * | 1973-03-22 | 1977-10-24 | ||
US3953130A (en) * | 1974-06-12 | 1976-04-27 | Kabushiki Kaisha Hoya Lens | Automatic digital indicating lens meter |
US4123163A (en) * | 1976-11-12 | 1978-10-31 | American Optical Corporation | Lens power display in prescription form |
-
1976
- 1976-11-30 JP JP14453376A patent/JPS5369058A/ja active Granted
-
1977
- 1977-11-01 US US05/847,505 patent/US4203666A/en not_active Expired - Lifetime
- 1977-11-15 AU AU30671/77A patent/AU508154B2/en not_active Expired
- 1977-11-23 IT IT29942/77A patent/IT1088513B/it active
- 1977-11-25 DE DE2752696A patent/DE2752696C3/de not_active Expired
- 1977-11-29 CA CA292,000A patent/CA1078171A/fr not_active Expired
- 1977-11-29 NL NLAANVRAGE7713144,A patent/NL174761C/xx not_active IP Right Cessation
- 1977-11-29 FR FR7735890A patent/FR2372424B1/fr not_active Expired
- 1977-11-30 GB GB49846/77A patent/GB1586679A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1005749A (fr) * | 1947-09-17 | 1952-04-15 | Desgranges & Huot | Perfectionnements apportés aux dispositifs pour mesurer la puissance de lentilles et de systèmes optiques |
GB1147452A (en) * | 1965-03-30 | 1969-04-02 | Hanwell Optical Company Ltd | Improvements in or relating to focimeters |
US3360660A (en) * | 1965-04-07 | 1967-12-26 | Gen Motors Corp | Position and rate readout system with dual phase-displaced gratings |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2501372A1 (fr) * | 1981-03-05 | 1982-09-10 | Tokyo Optical | Focometre |
Also Published As
Publication number | Publication date |
---|---|
AU508154B2 (en) | 1980-03-13 |
DE2752696C3 (de) | 1981-04-23 |
FR2372424B1 (fr) | 1980-10-17 |
GB1586679A (en) | 1981-03-25 |
IT1088513B (it) | 1985-06-10 |
NL174761B (nl) | 1984-03-01 |
CA1078171A (fr) | 1980-05-27 |
NL174761C (nl) | 1984-08-01 |
US4203666A (en) | 1980-05-20 |
NL7713144A (nl) | 1978-06-01 |
AU3067177A (en) | 1979-05-24 |
DE2752696A1 (de) | 1978-06-01 |
DE2752696B2 (de) | 1980-06-19 |
JPS5527294B2 (fr) | 1980-07-19 |
JPS5369058A (en) | 1978-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
TP | Transmission of property |