CA2215916A1 - Hard/soft superposition progressive lens design - Google Patents
Hard/soft superposition progressive lens designInfo
- Publication number
- CA2215916A1 CA2215916A1 CA002215916A CA2215916A CA2215916A1 CA 2215916 A1 CA2215916 A1 CA 2215916A1 CA 002215916 A CA002215916 A CA 002215916A CA 2215916 A CA2215916 A CA 2215916A CA 2215916 A1 CA2215916 A1 CA 2215916A1
- Authority
- CA
- Canada
- Prior art keywords
- lens design
- hard
- soft
- superposition
- 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.)
- Granted
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
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)
Abstract
A progressive ophthalmic lens is presented which is a linear composite of a hard lens design and a soft lens design resulting in a composite lens which combines features of the visual utility of a hard lens design with the visual comfort of a soft lens design.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/588,977 US5726734A (en) | 1996-01-19 | 1996-01-19 | Hard/soft superposition progressive lens design |
US08/588,977 | 1996-01-19 | ||
PCT/US1997/000059 WO1997026579A1 (en) | 1996-01-19 | 1997-01-07 | Hard/soft superposition progressive lens design |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2215916A1 true CA2215916A1 (en) | 1997-07-24 |
CA2215916C CA2215916C (en) | 2006-03-28 |
Family
ID=36123362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002215916A Expired - Lifetime CA2215916C (en) | 1996-01-19 | 1997-01-07 | Hard/soft superposition progressive lens design |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2215916C (en) |
-
1997
- 1997-01-07 CA CA002215916A patent/CA2215916C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2215916C (en) | 2006-03-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20170109 |