CA1012390A - Progressive power ophthalmic lens - Google Patents
Progressive power ophthalmic lensInfo
- Publication number
- CA1012390A CA1012390A CA204,509A CA204509A CA1012390A CA 1012390 A CA1012390 A CA 1012390A CA 204509 A CA204509 A CA 204509A CA 1012390 A CA1012390 A CA 1012390A
- Authority
- CA
- Canada
- Prior art keywords
- ophthalmic lens
- progressive power
- power ophthalmic
- progressive
- 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
- G02C7/061—Spectacle lenses with progressively varying focal power
- G02C7/063—Shape of the progressive surface
-
- 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
- G02C7/061—Spectacle lenses with progressively varying focal power
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38904273A | 1973-08-16 | 1973-08-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1012390A true CA1012390A (en) | 1977-06-21 |
Family
ID=23536585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA204,509A Expired CA1012390A (en) | 1973-08-16 | 1974-07-10 | Progressive power ophthalmic lens |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA1012390A (en) |
GB (1) | GB1484382A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2814916C3 (en) | 1978-04-06 | 1982-01-07 | Optische Werke G. Rodenstock, 8000 München | Spectacle lens with a progression area located between the far part and the near part |
GB2146791B (en) * | 1983-09-16 | 1987-01-28 | Suwa Seikosha Kk | Progressive multifocal ophthalmic lens |
-
1974
- 1974-07-10 CA CA204,509A patent/CA1012390A/en not_active Expired
- 1974-08-14 GB GB3584674A patent/GB1484382A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1484382A (en) | 1977-09-01 |
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