FR844346A - Bi-visual glasses - Google Patents
Bi-visual glassesInfo
- Publication number
- FR844346A FR844346A FR844346DA FR844346A FR 844346 A FR844346 A FR 844346A FR 844346D A FR844346D A FR 844346DA FR 844346 A FR844346 A FR 844346A
- Authority
- FR
- France
- Prior art keywords
- visual glasses
- glasses
- visual
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C5/00—Constructions of non-optical parts
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU844346X | 1937-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR844346A true FR844346A (en) | 1939-07-24 |
Family
ID=19734088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR844346D Expired FR844346A (en) | 1937-10-05 | 1938-10-05 | Bi-visual glasses |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR844346A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5343258A (en) * | 1993-02-01 | 1994-08-30 | Lachman Leigh J | Safety glasses |
EP1181912A1 (en) * | 1999-03-13 | 2002-02-27 | Ekaterina Emmanuilovna Kugoeva | Device for correcting low- and medium-grade myopia and for preventing accommodation stress |
CN103293708A (en) * | 2013-04-26 | 2013-09-11 | 中山市目明视光视力科技有限公司 | Glasses |
-
1938
- 1938-10-05 FR FR844346D patent/FR844346A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5343258A (en) * | 1993-02-01 | 1994-08-30 | Lachman Leigh J | Safety glasses |
EP1181912A1 (en) * | 1999-03-13 | 2002-02-27 | Ekaterina Emmanuilovna Kugoeva | Device for correcting low- and medium-grade myopia and for preventing accommodation stress |
EP1181912A4 (en) * | 1999-03-18 | 2004-03-17 | Ekaterina Emmanuilovna Kugoeva | Device for correcting low- and medium-grade myopia and for preventing accommodation stress |
CN103293708A (en) * | 2013-04-26 | 2013-09-11 | 中山市目明视光视力科技有限公司 | Glasses |
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