DE301962C - - Google Patents
Info
- Publication number
- DE301962C DE301962C DENDAT301962D DE301962DA DE301962C DE 301962 C DE301962 C DE 301962C DE NDAT301962 D DENDAT301962 D DE NDAT301962D DE 301962D A DE301962D A DE 301962DA DE 301962 C DE301962 C DE 301962C
- Authority
- DE
- Germany
- Prior art keywords
- double focus
- distant
- near part
- glass
- focus glass
- 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 9
- 230000003287 optical Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 2
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)
- Eyeglasses (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
DE301962C true DE301962C (xx) |
Family
ID=555793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT301962D Active DE301962C (xx) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE301962C (xx) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1135679B (de) * | 1956-04-13 | 1962-08-30 | Bozena Marie Phillips | Einstueckiges bifokales Brillenglas und Verfahren zu seiner Herstellung |
US6199984B1 (en) | 1999-03-17 | 2001-03-13 | Johnson & Johnson Vision Care, Inc. | Progressive addition lenses with varying power profiles |
-
0
- DE DENDAT301962D patent/DE301962C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1135679B (de) * | 1956-04-13 | 1962-08-30 | Bozena Marie Phillips | Einstueckiges bifokales Brillenglas und Verfahren zu seiner Herstellung |
US6199984B1 (en) | 1999-03-17 | 2001-03-13 | Johnson & Johnson Vision Care, Inc. | Progressive addition lenses with varying power profiles |
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