Patent ID: 9164201
Filing Date: 2015-10-20
Classification: A61F,B29C,G02B,G02C

Abstract:
1. A lens ( 1 ) comprising at least two optical surfaces (S 1 , S 2 ) each extending transversely relative to an optical axis (A-A) of the lens, so that light rays that pass through the lens pass through one then the other of the two surfaces, each surface comprising active zones (ZA 1 , ZA 2 ) inside of which a shape of said surface is adapted to produce part at least of the optical power of the lens for rays that pass through said active zones, with a sagittal height discontinuity of each surface between two different active zones of said surface, limits of the active zones (ZA 1 , ZA 2 ) of a first of the two surfaces being located in line with limits of the active zones of the other of said two surfaces, the lens being characterised in that said first and second surfaces (S 1 , S 2 ) furthermore comprise separating zones (ZS 1 , ZS 2 ) arranged so that each of the first and second surfaces consists of an alternation between the active zones and the separating zones, each active zone (ZA 1 , ZA 2 ) of one of the first and second surfaces (S 1 , S 2 ) being in line with a separating zone (ZS 2 , ZS 1 ) of the other of said first and second surfaces, and the shape of at least one of the first and second surfaces (S 1 , S 2 ) in at least one of the separating zones (ZS 1 , ZS 2 ) is adapted to increase at least one of the following angles: a first angle (A a second angle (A a third angle (A relative to an angle (A 10 , A 20 , A 30 ) located at a given location of the lens ( 1 ) and formed by an imaginary surface (S 0 ) obtained by subtracting respective sagittal heights of the first and second surfaces (S 1 , S 2 ), said angle for the imaginary surface being acute.