DE217963C - - Google Patents
Info
- Publication number
- DE217963C DE217963C DENDAT217963D DE217963DA DE217963C DE 217963 C DE217963 C DE 217963C DE NDAT217963 D DENDAT217963 D DE NDAT217963D DE 217963D A DE217963D A DE 217963DA DE 217963 C DE217963 C DE 217963C
- Authority
- DE
- Germany
- Prior art keywords
- lens
- main lens
- main
- meniscus
- axis
- 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
- 230000005499 meniscus Effects 0.000 claims description 5
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000011835 investigation Methods 0.000 description 1
- 208000001491 myopia Diseases 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
- 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)
- Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE217963C true DE217963C (enExample) |
Family
ID=479232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT217963D Active DE217963C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE217963C (enExample) |
-
0
- DE DENDAT217963D patent/DE217963C/de active Active
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