US3628854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible fresnel refracting membrane adhered to ophthalmic lens
Assignee: 3M Co
•
Filing: 1969-12-08
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Granted: 1971-12-21
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Expires: 1989-12-08
Abstract
Abstract A thin, fully conformable, plastic membrane which can be applied, and made to adhere with finger pressure, to spectacle lenses for quickly and impermanently changing one or more optical characteristics of the spectacle lenses. The membrane may be embossed on one of its surfaces to form a Fresnel-type lens or prism structure to introduce a deviation of the light ray, may be partially or entirely tinted to pass only certain wavelengths of light, may be diffused, or blurred uniformly or differentially, may have selective opaqued or transmitting areas or a combination thereof.
Inventors
- 👤 Arthur Jampolsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:51
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/001; G02C7/00; G02C7/02; G02C7/08; G02C7/086; G02C7/10; G02C7/104; G02C7/105; G02C7/14; G02C7/16; G02C2202/00; G02C2202/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
The device of claim 1 wherein (d) said Fresnel refracting surface is a Fresnel prism.
Claim 2
Dependent Claim
15 words
The device of claim 1 wherein (d) said Fresnel refracting surface is a Fresnel lens.
Claim 3
Dependent Claim
23 words
The device of claim 1 wherein (d) said adherence is effected by the molecular surface adhesion between said membrane and said ophthalmic lens.
Claim 4
Dependent Claim
16 words
The device of claim 1 wherein (d) said membrane is formed of a vinyl butyrate plastic.
Claim 5
Dependent Claim
16 words
The device of claim 1 wherein (d) said ophthalmic lens surface is the posterior surface thereof.
Claim 6
Dependent Claim
25 words
The device of claim 1 wherein (d) said membrane is formed of a vinyl butyrate plastic and (e) said adherence is effected by finger-pressure adhesion.
References Cited (Backward Citations)
FR369993A
Cited
US2248638A
Cited
CH207794A
Cited
US2511329A
Cited
GB717775A
Cited
US2884833A
Cited
US3004470A
Cited
US3033359A
Cited
US3203306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |