Method for modifying a non-dioptric parameter of an optical system
AssigneeEssilor International
InventorsPascal Allione, Celine Benoit, Laurent Calixte, Sylvain Chene, Jean Sahler
Life of this patent
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Abstract
A method is implemented by a computer for modifying a non-dioptric parameter of an optical system including a first and a second surface. The method includes a modifying step during which the first surface and second surface are modified so as to obtain a modified optical system such that the dioptric function of the modified optical system is substantially the same as the dioptric function of the optical system.
Claims13
A method implemented by processing circuitry for modifying a non-dioptric parameter of an optical system comprising a first and a second surface, the method comprising:
- modifying the first surface and second surface so as to obtain a modified optical system such that a dioptric function of the modified optical system is a same as a dioptric function of the optical system, wherein the modifying comprises
- obtaining data indicative of the optical system, the data comprising at least data of the first surface and the second surface and data indicative of a relative position of the first surface and the second surface,
- determining at least one modifying surface, the at least one modifying surface being determined based on a non-dioptric function to be modified,
- determining for each of the at least one modifying surface a complementary modifying surface identical to the at least one modifying surface, and
- adding the at least one modifying surface to one of the first surface and the second surface of the optical system and adding the complementary modifying surface to the other of the first surface and the second surface so as to obtain the modified optical system.
An ophthalmic lens for correcting a user's vision, the ophthalmic lens comprising:
- a first major surface;
- and
- a second major surface, wherein
- the first major surface is a composite surface comprising a first surface and at least one modifying surface,
- the second major surface is a composite surface comprising a second surface and at least one complementary modifying surface, the first surface and the second surface defining an optical system having information associated therewith, the information comprising at least information of the first surface and the second surface and of a relative position of the first surface and the second surface, the at least one modifying surface and the at least one complementary modifying surface being defined such that a dioptric function of the optical system is a same as a dioptric function of the ophthalmic lens, and
- the at least one modifying surface being selected from a list of existing modifying surfaces that have been optimized to modify a specific non-dioptric parameter of the optical system.
An ophthalmic lens determining device comprising:
- processing circuitry;
- and
- a memory storing instructions that when executed by the processing circuitry cause the processing circuitry to perform
- receiving an ophthalmic lens order request comprising at least a wearer's ophthalmic prescription and at least one non-dioptric function of the ophthalmic lens to modify,
- determining surfaces and relative positions of the surfaces for an ophthalmic lens based on the order request,
- determining at least one modifying surface based on the at least one non-dioptric function to be modified, and
- adding the at least one modifying surface to one of front and rear surfaces of the ophthalmic lens and a complementary modifying surface to the other of the front and rear surfaces so as to obtain a modified ophthalmic lens having a same dioptric function as the ophthalmic lens.
Dependencies are inferred from the claim text.