CA583087A - Lentille a puissance variable - Google Patents
Lentille a puissance variableInfo
- Publication number
- CA583087A CA583087A CA583087A CA687212A CA583087A CA 583087 A CA583087 A CA 583087A CA 583087 A CA583087 A CA 583087A CA 687212 A CA687212 A CA 687212A CA 583087 A CA583087 A CA 583087A
- Authority
- CA
- Canada
- Prior art keywords
- variable power
- power lens
- lens
- variable
- power
- 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
- G02C7/065—Properties on the principal line
-
- 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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA583087A CA583087A (fr) | 1955-06-04 | 1955-06-04 | Lentille a puissance variable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA583087A CA583087A (fr) | 1955-06-04 | 1955-06-04 | Lentille a puissance variable |
Publications (1)
Publication Number | Publication Date |
---|---|
CA583087A true CA583087A (fr) | 1959-09-15 |
Family
ID=4140978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA583087A Expired CA583087A (fr) | 1955-06-04 | 1955-06-04 | Lentille a puissance variable |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA583087A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2499725A1 (fr) * | 1981-02-09 | 1982-08-13 | American Optical Corp | Lentilles ophtalmiques a puissance progressive |
WO1982003129A1 (fr) * | 1981-03-09 | 1982-09-16 | Camelot Ind Corp | Lentille bifocale a transition variable |
US4861153A (en) * | 1986-12-19 | 1989-08-29 | American Optical Corporation | Progressive addition spectacle lens |
-
1955
- 1955-06-04 CA CA583087A patent/CA583087A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2499725A1 (fr) * | 1981-02-09 | 1982-08-13 | American Optical Corp | Lentilles ophtalmiques a puissance progressive |
WO1982003129A1 (fr) * | 1981-03-09 | 1982-09-16 | Camelot Ind Corp | Lentille bifocale a transition variable |
US4861153A (en) * | 1986-12-19 | 1989-08-29 | American Optical Corporation | Progressive addition spectacle lens |
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