EP0343067A1
Expired / Lapsed
EP
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Diffractive lens with a composite profile
Assignee: EssilorLuxottica SA
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Filing: 1989-05-17
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Granted: —
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Expires: 2009-05-17
Abstract
Abstract The present invention relates to an ophthalmic lens which characteristically comprises at least two concentric regions (110, 120) possessing diffractive components (110a, 110b...; 120a, 120b...) having differing phase profiles in order to utilise differing diffraction orders (n). The diffractive components (110a, 110b...; 120a, 120b...) can be formed from 3-D holograms or index holograms. <IMAGE>
Inventors
- 👤 Dominique Baude
- 👤 Pierre Chavel
- 👤 Denis Joyeux
- 👤 Jean Taboury
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:16
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1876; G02B5/189; G02B5/1895; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/041; G02C7/042; G02C7/044; G02C7/06; G02C2202/00; G02C2202/20
Claims Analysis
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References Cited (Backward Citations)
US1735758A
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US1955047A
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FR1180268A
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US3004470A
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