EP4344821A1 - Verfahren zur automatischen auswahl eines polierverfahrens für eine linse - Google Patents
Verfahren zur automatischen auswahl eines polierverfahrens für eine linse Download PDFInfo
- Publication number
- EP4344821A1 EP4344821A1 EP22306444.5A EP22306444A EP4344821A1 EP 4344821 A1 EP4344821 A1 EP 4344821A1 EP 22306444 A EP22306444 A EP 22306444A EP 4344821 A1 EP4344821 A1 EP 4344821A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- frame
- selecting
- polishing process
- embedded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007517 polishing process Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 5
- 239000000700 radioactive tracer Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
Definitions
- the present invention relates to a method for selecting in an automated manner a polishing process for an edged lens fitted in a frame.
- the polishing step In the field of edging technology for ophthalmic lenses, the polishing step is often regarded as a bottleneck, because this is the most impacting step in terms of equipment productivity. Indeed, even if only around 30 percent of eyeglass orders request polishing, the polishing step is a huge contributor to productivity savings.
- An object of the present disclosure is to overcome the above-mentioned drawbacks of the prior art.
- the present disclosure provides a method for selecting in an automated manner a polishing process for an edged lens fitted in a frame, remarkable in that it comprises:
- the method according to the disclosure makes it possible to automatically decide whether the polishing process to be implemented should be a soft one or a standard one, without any human intervention. As a result, productivity is greatly improved.
- the determining step is carried out by a calculation engine.
- the determining step comprises comparing in an automated manner the maximum edge thickness of the lens with the frame thickness.
- the frame thickness is provided by a tracer.
- the frame thickness is extracted from a frame shape file.
- the maximum edge thickness is obtained by comparing edge thicknesses of the lens at predetermined radii provided by a predetermined model of the lens and selecting the highest value among these edge thicknesses as the maximum edge thickness.
- the present disclosure also provides a computer program product, remarkable in that it comprises one or more sequences of instructions that are accessible to a processor and that, when executed by that processor, cause that processor to implement a method for selecting in an automated manner a polishing process for an edged lens fitted in a frame, comprising:
- the present disclosure further provides a non-transitory information storage medium, remarkable in that it stores one or more sequences of instructions that are accessible to a processor and that, when executed by that processor, cause that processor to implement a method for selecting in an automated manner a polishing process for an edged lens fitted in a frame, comprising:
- the computer program product is advantageously configured for executing the method in any of its execution modes.
- FIG. 1 is a flow diagram showing steps of a method according to the present disclosure, in a particular embodiment.
- a method, or a step in a method that "comprises”, “has”, “contains”, or “includes” one or more steps or elements possesses those one or more steps or elements, but is not limited to possessing only those one or more steps or elements.
- Figure 1 shows steps of a method according to the present disclosure for selecting in an automated manner a polishing process for an edged lens fitted in a frame, in a particular embodiment.
- a first step 10 of the method comprises determining in automated manner whether the lens is embedded in the frame.
- a lens is considered to be embedded in a frame when no edge part of the lens is visible from the outside part of the frame.
- it means, as a basic rule, that the maximum edge thickness of the lens is lower than the minimum thickness of the frame.
- As an optimized rule it means that the edge thickness of the lens is lower than the frame thickness at every angle of a predetermined value, for example every 10°.
- This step may be carried out by a calculation engine.
- Step 10 may for example comprise, in an embodiment where the above-mentioned basic rule is applied, comparing in an automated manner, for example in the calculation engine, the maximum edge thickness of the lens with the thickness of the frame.
- the thickness of the frame may be provided by a tracer. It may be extracted from a frame shape file storing values of thicknesses for a plurality of frames having various shapes.
- the maximum edge thickness of the lens may be obtained by using a predetermined model of the lens, defined as a full description of the tridimensional lens, comprising the front surface of the lens, the back surface of the lens and the center thickness of the lens, in a same referential.
- the lens model will provide the values of the edge thickness of the lens at predetermined radii. Then, the highest value among these edge thickness values will be selected as the maximum edge thickness.
- step 12 which consists in selecting a soft polishing process for the lens fitted and embedded in the frame. Soft polishing is well known per se and will thus not be described in detail here.
- step 14 which consists in selecting a standard polishing process for the lens fitted, but not embedded, in the frame. Standard polishing is well known per se and will thus not be described in detail here.
- Standard polishing makes it possible to obtain a shiny lens edge, whereas soft polishing is faster on the equipment and provides a lens edge that is not as shiny as the one obtained thanks to standard polishing.
- a preliminary step may be performed, consisting of checking whether the order from the ECP or customer includes a request for polishing the edged lens fitted in the frame.
- a computer program product comprises one or more sequences of instructions that are accessible to a processor and that, when executed by the processor, cause the processor to carry out steps of the method for selecting in an automated manner a polishing process for an edged lens fitted in a frame.
- the processor is configured for carrying out steps 10, 12 and 14 as described above.
- the software may be hosted for example remotely in a cloud, or locally in a computer.
- sequence(s) of instructions may be stored in one or several non-transitory computer-readable storage medium/media, including a predetermined location in a cloud.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22306444.5A EP4344821A1 (de) | 2022-09-29 | 2022-09-29 | Verfahren zur automatischen auswahl eines polierverfahrens für eine linse |
PCT/EP2023/076974 WO2024068884A1 (en) | 2022-09-29 | 2023-09-28 | A method for automatically selecting a polishing process for a lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22306444.5A EP4344821A1 (de) | 2022-09-29 | 2022-09-29 | Verfahren zur automatischen auswahl eines polierverfahrens für eine linse |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4344821A1 true EP4344821A1 (de) | 2024-04-03 |
Family
ID=83691723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22306444.5A Pending EP4344821A1 (de) | 2022-09-29 | 2022-09-29 | Verfahren zur automatischen auswahl eines polierverfahrens für eine linse |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4344821A1 (de) |
WO (1) | WO2024068884A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0999011A1 (de) * | 1998-10-05 | 2000-05-10 | Hoya Corporation | Verfahren zur Bearbeitung von optischen Linsen |
US20040209547A1 (en) * | 2003-04-16 | 2004-10-21 | Kabushiki Kaisha Topcon | Method for processing chamfering of eyeglass lens and apparatus for processing the same |
WO2016108063A1 (en) * | 2014-12-31 | 2016-07-07 | Essilor International (Compagnie Generale D'optique) | Ophthalmic lens edging process by calculation |
US20180284728A1 (en) * | 2015-10-09 | 2018-10-04 | Essilor International | Method for generating settings for machining an optical lens |
WO2019106399A1 (en) * | 2017-11-29 | 2019-06-06 | Carl Zeiss Vision International Gmbh | Manufacturing method for manufacturing a spectacle lens, spectacle lens, and lens design method |
US20190265683A1 (en) * | 2016-05-25 | 2019-08-29 | Schneider Gmbh & Co. Kg | Method and system for processing optical lenses |
-
2022
- 2022-09-29 EP EP22306444.5A patent/EP4344821A1/de active Pending
-
2023
- 2023-09-28 WO PCT/EP2023/076974 patent/WO2024068884A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0999011A1 (de) * | 1998-10-05 | 2000-05-10 | Hoya Corporation | Verfahren zur Bearbeitung von optischen Linsen |
US20040209547A1 (en) * | 2003-04-16 | 2004-10-21 | Kabushiki Kaisha Topcon | Method for processing chamfering of eyeglass lens and apparatus for processing the same |
WO2016108063A1 (en) * | 2014-12-31 | 2016-07-07 | Essilor International (Compagnie Generale D'optique) | Ophthalmic lens edging process by calculation |
US20180284728A1 (en) * | 2015-10-09 | 2018-10-04 | Essilor International | Method for generating settings for machining an optical lens |
US20190265683A1 (en) * | 2016-05-25 | 2019-08-29 | Schneider Gmbh & Co. Kg | Method and system for processing optical lenses |
WO2019106399A1 (en) * | 2017-11-29 | 2019-06-06 | Carl Zeiss Vision International Gmbh | Manufacturing method for manufacturing a spectacle lens, spectacle lens, and lens design method |
Also Published As
Publication number | Publication date |
---|---|
WO2024068884A1 (en) | 2024-04-04 |
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