EYEGLASS LENS PERIPHERY PROCESSING APPARATUS

• US 20120252315A1
• Filed: 03/30/2012
• Published: 10/04/2012
• Est. Priority Date: 03/30/2011
• Status: Active Grant

• Current Assignee: Nidek Company Limited
• Original Assignee: Nidek Company Limited
• Inventors: TAKEICHI, Kyoji, NATSUME, Katsuhiro
• Granted Patent: US 10,046,434 B2
• Time in Patent Office: Days
• US Class Current: 451/5
• CPC Class Codes: B24B 49/10 involving electrical means B24B49/02, B24B49/08 take precedence
• CPC Class Codes: B24B 51/00 Arrangements for automatic control of a series of individual steps in grinding a workpiece if applicable to other machine tools, G05B takes precedence
• CPC Class Codes: B24B 9/14 of optical work, e.g. lenses, prisms control of the position of the tool for bevelling optical work B24B47/225
• CPC Class Codes: B24B 9/148 electrically, e.g. numerically, controlled

Abstract

An eyeglass lens periphery processing apparatus for processing an eyeglass lens includes: a lens shuck shaft holding the eyeglass lens; a data input unit inputting target lens shape data and layout data of an optical center of the lens with respect to the target lens shape; left and right lens selecting unit inputting a selection signal as to whether the lens held by the lens chuck shaft is a right lens or a left lens; a lens shape detecting unit detecting the lens shape; a confirming unit confirming whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the detecting result of the lens shape detecting unit, the layout data and the selection signal; and a notifying unit notifying the confirming result of the confirming unit.

Claims

1. An eyeglass lens periphery processing apparatus for processing a periphery of an eyeglass lens by a periphery processing tool, the apparatus comprising:

a lens shuck shaft configured to hold the eyeglass lens;

a data input unit configured to input target lens shape data and layout data of an optical center of the lens with respect to the target lens shape;

a left and right lens selecting unit configured to input a selection signal as to whether the lens held by the lens chuck shaft is a right lens or a left lens;

a lens refractive surface shape detecting unit which includes a tracing stylus configured to contact a front refractive surface and a rear refractive surface of the lens held by the lens chuck shaft, and a detector configured to detect movement of the tracing stylus, the lens refractive surface shape detecting unit obtaining a shape of the refractive surface of the lens based on the detecting result of the detector;

a confirming unit configured to confirm whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the detecting result of the lens refractive surface shape detecting unit, the input layout data and the input selection signal; and

a notifying unit configured to notify the confirming result of the confirming unit.

2. The eyeglass lens periphery processing apparatus according to claim 1, wherein

the confirming unit obtains a first optical center position of the lens held by the lens chuck shaft based on the detecting result of the lens refractive surface shape detecting unit, and obtains a second optical lens position of the lens based on the input layout data and the input selection signal, compare the first optical center position with the second optical center position, and confirm whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the comparison result.

3. The eyeglass lens periphery processing apparatus according to claim 2, wherein the confirming unit obtains a center position of the front refractive surface and a center position of the rear refractive surface based on the shape of the front refractive surface and the shape of the rear refractive surface which are detected by the lens refractive surface shape detecting unit, and obtains the first optical center position based on the obtained center position of the front refractive surface and the obtained center position of the rear refractive surface.

4. The eyeglass lens periphery processing apparatus according to claim 1 further comprising:

a retouching mode setting unit configured to set a retouching mode for adjusting a size of the processed lens; and

a memory for storing a right target lens shape and a left target lens shape,

wherein when the retouching mode setting unit sets the retouching mode, the confirming unit obtains the different points between the right target lens shape and the left target lens shape, and causes the lens refractive surface shape detecting unit to detect a part of the refractive surface of the surface held by the lens chuck shaft based on the obtained different points, and confirms whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the detecting result of the lens refractive surface shape detecting unit.

5. The eyeglass lens periphery processing apparatus according to claim 1 further comprising:

a retouching mode setting unit configured to set a retouching mode for adjusting a size of the processed lens; and

a memory for storing an edge thickness of the left lens and an edge thickness of the right lens detected by the lens refractive surface shape detecting unit based on the target lens shape before retouching,

wherein when the retouching mode setting unit sets the retouching mode, the confirming unit obtains different points of the edge thicknesses stored in the memory between the left lens and the right lens, causes the lens refractive surface shape detecting unit to detect a first edge thickness of the lens held by the lens chuck shaft, and confirms whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the detected first edge thickness and a second edge thickness which is the edge thickness of the left lens or the right lens read out from the memory based on the selection signal.

9. The eyeglass lens periphery processing apparatus according to claim 1 further comprising a retouching mode setting unit configured to set a retouching mode for adjusting a size of the processed lens,

wherein when the retouching mode setting unit sets the retouching mode, the confirming unit compares the lens outer diameter shape detected by the lens outer diameter detecting unit with a left or right target lens shape which is determined by the selection unit, and confirms whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the comparison result.

6. An eyeglass lens periphery processing apparatus for processing a periphery of an eyeglass lens by a periphery processing tool, the apparatus comprising:

a lens shuck shaft configured to hold the eyeglass lens;

a data input unit configured to input target lens shape data and layout data of an optical center of the lens with respect to the target lens shape;

a left and right lens selecting unit configured to input a selection signal as to whether the lens held by the lens chuck shaft is a right lens or a left lens;

a lens outer diameter detecting unit which includes a tracing stylus configured to contact the periphery of the lens held by the lens chuck shaft and a detector configured to detect movement of the tracing stylus, the lens outer diameter detecting unit detecting an outer diameter shape of the lens based on the detecting result of the detector;

a confirming unit configured to confirm whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the detecting result of the lens outer diameter detecting unit, the input layout data and the input selection signal; and

a notifying unit configured to notify the confirming result of the confirming unit.

7. The eyeglass lens periphery processing apparatus according to claim 6, wherein

the confirming unit obtains a first optical center position of the lens held by the lens chuck shaft based on the detecting result of the lens outer diameter detecting unit, and obtains a second optical lens position of the lens based on the input layout data and the input selection signal, compare the first optical center position with the second optical center position, and confirm whether the lens held by the lens chuck shaft is the correct one of the right lens and the left lens based on the comparison result.

8. The eyeglass lens periphery processing apparatus according to claim 7, wherein the confirming unit obtains a geometry center of the outer diameter shape of the lens based on the detecting result of the lens outer diameter detecting unit, and obtains the first optical center position based on the obtained geometry center.