DE243843C - - Google Patents
Info
- Publication number
- DE243843C DE243843C DENDAT243843D DE243843DA DE243843C DE 243843 C DE243843 C DE 243843C DE NDAT243843 D DENDAT243843 D DE NDAT243843D DE 243843D A DE243843D A DE 243843DA DE 243843 C DE243843 C DE 243843C
- Authority
- DE
- Germany
- Prior art keywords
- glasses
- bifocal
- lenses
- frame
- protrusion
- 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.)
- Active
Links
- 239000011521 glass Substances 0.000 claims description 7
- 208000001491 myopia Diseases 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- 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
- G02C5/001—Constructions of non-optical parts specially adapted for particular purposes, not otherwise provided for or not fully classifiable according to technical characteristics, e.g. therapeutic glasses
-
- 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
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- Eyeglasses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE243843C true DE243843C (show.php) |
Family
ID=502937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT243843D Active DE243843C (show.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE243843C (show.php) |
-
0
- DE DENDAT243843D patent/DE243843C/de active Active
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