METHOD FOR DESIGNING SPECTACLE LENS, AND SYSTEM FOR DESIGNING SPECTACLE LENS

• US 20150309333A1
• Filed: 05/04/2015
• Published: 10/29/2015
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Nikon Corporation
• Original Assignee: Nikon Corporation
• Inventors: UCHIYAMA, YUKIMASA, MIZUNO, MASATOMO
• Granted Patent: US 9,753,308 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02C 7/027 considering wearer's parameters
• CPC Class Codes: G02C 7/028 Special mathematical design techniques
• CPC Class Codes: G02C 7/061 Spectacle lenses with progressively varying focal power

Abstract

A method for designing a spectacle lens includes: a determination step of determining at least one optimization condition to be used in optimization design of a spectacle lens in accordance with a prescription condition for the spectacle lens; a design step of designing at least one prototype lens by the optimization design corresponding to the at least one optimization condition determined in the determination step; a selection step of selecting a prototype lens to be provided as the spectacle lens from the at least one prototype lens designed in the design step; and a recording step of performing update recording, at a database in which a plurality of optimization conditions respectively correlated with a plurality of prescription conditions are recorded, an optimization condition that is correlated with the prescription condition for the spectacle lens to an optimization condition used in the optimization design of the prototype lens selected in the selection step.

Claims

1. A method for designing a spectacle lens, comprising:

a determination step of determining at least one optimization condition to be used in optimization design of a spectacle lens in accordance with a prescription condition for the spectacle lens;

a design step of designing at least one prototype lens by the optimization design corresponding to the at least one optimization condition determined in the determination step;

a selection step of selecting a prototype lens to be provided as the spectacle lens from the at least one prototype lens designed in the design step; and

a recording step of performing update recording, at a database in which a plurality of optimization conditions respectively correlated with a plurality of prescription conditions are recorded, an optimization condition that is correlated with the prescription condition for the spectacle lens to an optimization condition used in the optimization design of the prototype lens selected in the selection step.

2. The method for designing a spectacle lens according to claim 1, wherein

in the determination step, an optimization condition correlated with the prescription condition for the spectacle lens is acquired from the database and is determined as one of optimization conditions to be used in the design step.

3. The method for designing a spectacle lens according to claim 1, wherein

in the selection step, at least one of optical performance and a shape of the prototype lens is evaluated and based on an evaluation result a prototype lens to be provided as the spectacle lens is selected from the prototype lens.

4. The method for designing a spectacle lens according to claim 3, wherein

the optical performance is at least one of astigmatism, average spherical power, and distortion.

5. The method for designing a spectacle lens according to claim 1, wherein

in the recording step, the optimization condition used in the optimization design of the prototype lens selected in the selection step is additionally recorded at the database correlated with the prescription condition for the spectacle lens if no optimization condition corresponding to the prescription condition for the spectacle lens is recorded at the database.

6. The method for designing a spectacle lens according to claim 3, wherein

in the recording step, optimization conditions determined in the determination step and respective evaluation results for the optimization conditions in the selection step, correlated with the prescription condition for the spectacle lens, are recorded as history information about the optimization conditions and the evaluation results at the database.

7. The method for designing a spectacle lens according to claim 6, further comprising:

a display step of displaying at a display device the history information recorded correlated with the prescription condition for the spectacle lens at the database.

8. The method for designing a spectacle lens according to claim 1, wherein

in the determination step, the optimization condition to be used in the design step is determined according to a list of optimization conditions stored in advance in a storage device.

9. The method for designing a spectacle lens according to claim 6, wherein

in the determination step, the optimization condition to be used in the design step is determined based on the history information recorded correlated with the prescription condition for the spectacle lens.

10. A system for designing a spectacle lens, comprising:

a determination unit that determines at least one optimization condition to be used in optimization design of a spectacle lens in accordance with a prescription condition for the spectacle lens;

a design unit that designs by the optimization design at least one prototype lens corresponding to the at least one optimization condition determined by the determination unit;

a selection unit that selects a prototype lens to be provided as the spectacle lens from the at least one prototype lens designed by the design unit; and

a record control unit that performs update recording, at a database in which a plurality of optimization conditions respectively correlated with a plurality of prescription conditions are recorded, an optimization condition that is correlated with the prescription condition for the spectacle lens to an optimization condition used in the optimization design of the prototype lens selected by the selection unit.