NL84710C - - Google Patents
Info
- Publication number
- NL84710C NL84710C NL84710DA NL84710C NL 84710 C NL84710 C NL 84710C NL 84710D A NL84710D A NL 84710DA NL 84710 C NL84710 C NL 84710C
- Authority
- NL
- Netherlands
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
- A61B3/06—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision
- A61B3/066—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptation; for testing colour vision for testing colour vision
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)
- Spectrometry And Color Measurement (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Pinball Game Machines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL785796X | 1954-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL84710C true NL84710C (es) |
Family
ID=19832266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL84710D NL84710C (es) | 1954-04-03 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2916963A (es) |
| DE (1) | DE1017742B (es) |
| FR (1) | FR1121789A (es) |
| GB (1) | GB785796A (es) |
| NL (1) | NL84710C (es) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3087378A (en) * | 1958-05-08 | 1963-04-30 | World Magnetics Inc | Device for testing eyes |
| US3425772A (en) * | 1966-10-07 | 1969-02-04 | Harold Y Minas | Method for testing the sensitivity of eyes to light |
| US3807838A (en) * | 1973-01-10 | 1974-04-30 | Madison College Foundation Inc | Color vision photometer |
| US4523852A (en) * | 1983-06-09 | 1985-06-18 | Miles Laboratories, Inc. | Color comparison reference standard and method for using same |
| DE9100027U1 (es) * | 1991-01-03 | 1991-03-21 | Oculus Optikgeraete Gmbh, 6330 Wetzlar, De | |
| EP3524135A1 (en) * | 2018-02-13 | 2019-08-14 | Essilor International (Compagnie Generale D'optique) | Wearable binocular optoelectronic device for measuring light sensitivity threshold of a user |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189819087A (en) * | 1898-09-07 | 1899-07-08 | Charles William Scott Crawley | Illumination Photometer. |
| US643184A (en) * | 1899-04-03 | 1900-02-13 | Joseph Bijur | Apparatus for measuring and comparing illumination. |
| US1564495A (en) * | 1923-04-12 | 1925-12-08 | American Optical Corp | Astigmatic testing device |
| US1494548A (en) * | 1923-05-02 | 1924-05-20 | Western Electric Co | Photometer |
| FR616604A (fr) * | 1925-05-25 | 1927-02-05 | Perfectionnements apportés aux moyens d'évaluation de lacuité visuelle | |
| US1795752A (en) * | 1929-05-16 | 1931-03-10 | Zeiss Carl Fa | Apparatus for testing light sense |
| DE690378C (de) * | 1935-06-04 | 1940-04-24 | Paul Gossen | Anordnung zur stufenweisen Abschirmung eines strahlenempfindlichen Materials |
| US2240156A (en) * | 1937-07-17 | 1941-04-29 | Jacob B Feldman | Apparatus for determining the minimum light visible |
| US2224564A (en) * | 1938-06-22 | 1940-12-10 | Silva Harry R De | Apparatus for ascertaining vision sensitivities |
| GB570699A (en) * | 1943-11-09 | 1945-07-18 | Kodak Ltd | Improvements in or relating to apparatus for testing colour blindness |
| US2501446A (en) * | 1947-04-08 | 1950-03-21 | Richard W Justice | Light polarizing apparatus for analyzing pictures |
| US2674153A (en) * | 1951-05-22 | 1954-04-06 | Keystone View Company | Vision classifier instrument |
-
0
- NL NL84710D patent/NL84710C/xx active
-
1955
- 1955-03-31 US US498394A patent/US2916963A/en not_active Expired - Lifetime
- 1955-04-01 GB GB9580/55A patent/GB785796A/en not_active Expired
- 1955-04-04 DE DER16404A patent/DE1017742B/de active Pending
- 1955-04-04 FR FR1121789D patent/FR1121789A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB785796A (en) | 1957-11-06 |
| DE1017742B (de) | 1957-10-17 |
| US2916963A (en) | 1959-12-15 |
| FR1121789A (fr) | 1956-08-27 |