FR972402A - Verre multifocal pour la lunetterie - Google Patents
Verre multifocal pour la lunetterieInfo
- Publication number
- FR972402A FR972402A FR972402DA FR972402A FR 972402 A FR972402 A FR 972402A FR 972402D A FR972402D A FR 972402DA FR 972402 A FR972402 A FR 972402A
- Authority
- FR
- France
- Prior art keywords
- eyewear
- multifocal lens
- multifocal
- lens
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR972402T | 1941-03-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR972402A true FR972402A (fr) | 1951-01-30 |
Family
ID=9515958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR972402D Expired FR972402A (fr) | 1941-03-01 | 1941-03-01 | Verre multifocal pour la lunetterie |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR972402A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2743649A (en) * | 1951-09-04 | 1956-05-01 | Bozena Marie Phillips | Ophthalmic lenses |
US4484804A (en) * | 1980-07-09 | 1984-11-27 | Essilor International Cie Generale D'optique | Multifocal ophthalmic lenses |
-
1941
- 1941-03-01 FR FR972402D patent/FR972402A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2743649A (en) * | 1951-09-04 | 1956-05-01 | Bozena Marie Phillips | Ophthalmic lenses |
US4484804A (en) * | 1980-07-09 | 1984-11-27 | Essilor International Cie Generale D'optique | Multifocal ophthalmic lenses |
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