Method for modifying a non-dioptric parameter of an optical system

Patent metadata

Field	Value
Publication number	US-10871658-B2
Application number	US-201615568656-A
Country	US
Kind code	B2
Filing date	Apr 12, 2016
Priority date	Jun 8, 2015
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

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.

First claim

The invention claimed is:

1. 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.

2. The method according to claim 1 , wherein the complementary modifying surface is determined so that the modified optical system has the same dioptric function as the optical system.

3. The method according to claim 1 , further comprising modifying the complementary modifying surface so that the modified optical system has the same dioptric function as the optical system.

4. The method according to claim 1 , further comprising, after the adding, comparing the at least one non-dioptric modified parameter to a target value, wherein the determining of the at least one modifying surface, the determining of the complementary modifying surface, and the adding of the at least one modifying surface and the complementary modifying surface are repeated so as to decrease the non-dioptric modified parameter.

5. The method according to claim 1 , wherein the non-dioptric parameter is selected from a list consisting of an overall optical distortion of the optical system, local optical distortion of the optical system, a thickness of the optical system, and a geometry of at least one of the first surface and the second surface of the optical system.

6. The method according to claim 1 , wherein the optical system is a semi-finished lens blank having a finished surface and a non-finished surface, the non-dioptric parameter being a geometry of the finished surface imposed to the first surface.

7. A method implemented by processing circuitry for modifying at least one non-dioptric binocular parameter of a pair of optical lenses, wherein the non-dioptric parameter of each optical lens of the pair of optical lenses is modified using the method according to claim 1 .

8. A method of manufacturing an ophthalmic lens comprising:
determining surfaces of the ophthalmic lens and relative positions of front and rear surfaces of the ophthalmic lens; and
manufacturing the ophthalmic lens,
wherein during the determining, at least one non-dioptric parameter of the ophthalmic lens is modified according to the method of claim 1 .

9. The method of manufacturing the ophthalmic lens according to claim 8 , wherein the manufacturing comprises providing and sticking at least one transparent patch having a surface corresponding to the at least one modifying surface or the complementary modifying surface on the corresponding surface of the ophthalmic lens.

10. A method of providing an ophthalmic lens adapted to a wearer, the method comprising:
obtaining wearer data comprising at least a wearer's prescription;
ordering a dioptric design having a dioptric function corresponding at least to the wearer's prescription, at a lens designer side;
receiving the ordered dioptric design;
modifying at least one non-dioptric parameter of the ophthalmic lens corresponding to the received dioptric design according to the method of claim 1 , the optical system being the ophthalmic lens, the at least one modifying surface being determined based on the non-dioptric function to be modified; and
providing the modified ophthalmic lens.

11. 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.

12. 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.

13. The ophthalmic lens determining device according to claim 12 , wherein the instructions when executed by the processing circuitry cause the processing circuitry to perform communicating with at least one distant entity to provide the at least one modifying surface and/or the complementary modifying surface.

Assignees

• Essilor Int

Inventors

• Allione Pascal
• Benoit Celine
• Calixte Laurent
• Chene Sylvain
• Sahler Jean

Classifications

• G02C7/028 Primary

  Special mathematical design techniques · CPC title

• G02C7/086

  Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles · CPC title

• G02C7/068

  Special properties achieved by the combination of the front and back surfaces · CPC title