# US 7,611,243 B2 · Eyeglass lens processing method

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- Number: US 7,611,243 B2
- Document ID: US7611243B2
- Status: Granted
- Kind: B2
- Application number: 11/831,510
- Filed: 2007-07-31
- Published: 2008-09-11
- Granted: 2009-11-03
- Earliest claimed: 2006-07-31
- Assignees: Nidek Co., Ltd.
- Inventors: Kyoji Takeichi
- Web page: https://patentgrep.com/patent/US7611243B2

## CPC

- B24B 9/146: {Accessories, e.g. lens mounting devices}
- B28D 1/143: {lens-drilling machines}
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B28D: WORKING STONE OR STONE-LIKE MATERIALS

## Abstract

An eyeglass lens processing method for processing a hole for attaching a rimless frame to an eyeglass lens, the method includes: selecting a pattern used for a processing from a plurality of hole patterns; selecting a first drilling in which an angle of the processed hole is normal at least to a lens surface of a demo lens or a second drilling in which the angle of the processed hole is normal to a lens surface of the eyeglass lens; and when the first drilling is selected, (a) inputting a surface curve of the demo lens, (b) inputting hole position data of the demo lens for the selected pattern, (c) determining an hole angle and a hole position for the eyeglass lens based on the surface curve of the demo lens and the hole position data to obtain drilling data.

## Claims

### Claim 1

An eyeglass lens processing method for processing a hole for attaching a rimless frame to an eyeglass lens, the method comprising:
selecting a hole pattern used for a processing from a plurality of hole patterns;
selecting a first drilling in which an angle of the processed hole is normal to a lens surface of a demo lens, a second drilling in which the angle of the processed hole is normal to a lens surface of the eyeglass lens or a third drilling in which the angle of the processed hole is arbitrarily set to the lens surface of the eyeglass lens;
when the first drilling is selected, (a) inputting a surface curve of the demo lens or an angle of inclination, which is approximated to the surface curve of the demo lens, at a hole position, (b) inputting hole position data of the demo lens for the selected hole pattern, (c) determining an hole angle and a hole position for the eyeglass lens based on the surface curve or the angle of the inclination and the hole position data to obtain drilling data; and
performing drilling on the eyeglass lens based on the drilling data.

### Claim 2 (depends on 1)

The method according to claim 1, wherein
the hole position data inputting step includes a step of inputting a surface curve of the eyeglass lens or an angle of inclination, which is approximated to the surface curve of the eyeglass lens, at a hole position, and
the determining step includes a step of correcting the hole position data to obtain a hole position correction data when the demo lens differs from the eyeglass lens in the surface curve or the angle of the inclination.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the hole position data inputting step includes steps of taking an image of the demo lens and obtaining the hole position based on the taken image.