CN110737111A - lens processing technology - Google Patents
lens processing technology Download PDFInfo
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- CN110737111A CN110737111A CN201911019886.3A CN201911019886A CN110737111A CN 110737111 A CN110737111 A CN 110737111A CN 201911019886 A CN201911019886 A CN 201911019886A CN 110737111 A CN110737111 A CN 110737111A
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- Prior art keywords
- lens
- parameters
- processed
- processing
- design
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
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- 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
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- 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
- B24B13/0031—Machines having several working posts; Feeding and manipulating devices
- B24B13/0037—Machines having several working posts; Feeding and manipulating devices the lenses being worked by different tools, e.g. for rough-grinding, fine-grinding, polishing
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
A process for machining high-precision lens includes such steps as designing construction order including the number of degrees of lens design, design parameters and relative parameters, preparing test piece, scanning the construction order, polishing, measuring the difference between the number of degrees of lens polished by test piece and the design precision of lens, modifying the relative parameters of construction order, and operating equipment.
Description
Technical Field
The invention relates to the technical field of lens processing, in particular to high-precision lens processing technologies.
Background
In the production process of the spectacle lens, cutting of the spectacle lens is extremely important steps, the traditional spectacle lens processing technology is that after the design degree of the spectacle lens is confirmed, batch processing is directly carried out according to the technical parameters of the surface to be processed, only the processing precision of equipment is adjusted in the process, so that the processing success rate of the high-precision spectacle lens is only 5%, the manufacturing time is long, the waste of a spectacle lens blank is serious, and the technology has the problem that a diamond finishing tool needs to be frequently replaced, and the manufacturing cost is increased.
Disclosure of Invention
The invention mainly solves the technical problem of providing high-precision lens processing technologies, which can improve the success rate of high-precision lenses, enable the tolerance error of the high-precision lenses to be +/-1 degree, and reduce the processing time and cost.
In order to achieve the purpose, the following technical scheme is adopted to realize the purpose:
high-precision lens processing technique, which comprises the following steps:
acquiring design parameters of a lens to be processed and technical parameters of a surface to be processed, and designing a construction order according to the design parameters and the technical parameters of the surface to be processed;
the construction sheet comprises processing parameters corresponding to the design parameters and the technical parameters of the surface to be processed, a test sheet with the same technical parameters as the lens to be processed is obtained, and cutting processing is carried out on the test sheet according to the processing parameters of the construction sheet;
polishing the cut test piece;
measuring the difference value between the lens power of the polished test piece and the lens design power, and modifying the processing parameters according to the difference value;
and processing the lens to be processed according to the corresponding processing parameters of the modified construction order.
, the design parameters of the lens to be processed include refractive index and lens power.
And , the technical parameters of the surface to be processed include surface curvature, refractive index, diopter, diameter, center thickness, prism degree and addition.
Further , the processing parameters include diopter, diameter, center thickness, prism, and add.
And , modifying the processing parameters according to the difference, specifically, subtracting the difference from the technical parameters of the surface to be processed to obtain parameters which are the modified technical parameters of the surface to be processed, and modifying the corresponding processing parameters in the construction order according to the modified technical parameters of the surface to be processed.
The lens processing technology has the beneficial effects that: the success rate of the high-precision lens produced by the processing technology according to the method is high, and the success rate of the high-precision lens within the error of +/-1 degree is as high as 50 percent; the manufacturing process is reduced, and 90% of production time is saved; the loss of the cutter and the lens blank is reduced, and the comprehensive cost is reduced.
Drawings
The invention is further illustrated in the accompanying drawings, which are not to be construed as limiting the invention in any way, and other drawings will become apparent to those skilled in the art without undue inventive faculty.
FIG. 1 is a flow chart of a preferred embodiment of the present invention for processing high precision lenses with allowable errors of + -1 degree.
Detailed Description
The invention is further described in connection with the following examples.
As shown in fig. 1, the embodiment of the present invention provides high-precision lens processing technologies, which includes the following steps:
s1, obtaining design parameters of a lens to be processed and technical parameters of a surface to be processed, and designing a construction sheet according to the design parameters and the technical parameters of the surface to be processed, wherein the construction sheet comprises processing parameters corresponding to the design parameters and the technical parameters of the surface to be processed. The specific parameters of the surface to be processed of the construction order comprise surface curvature, refractive index, diopter, diameter, center thickness, prism degree and down-addition light, and the high-precision lens can be manufactured according to the standard of the construction order.
And S2, obtaining a test piece with the same technical parameters as the lens to be processed, and cutting the test piece according to the processing parameters. The loss of the lens blank sheet in the testing process can be reduced by using the testing sheet with the same standard to replace the lens blank sheet, and the cost is saved.
S3, polishing the test piece after cutting; the data of the test after polishing more laminate the data of finished lens, and the error is little.
And S4, measuring a difference value between the lens degree of the polished test piece and the lens design degree, modifying the processing parameter according to the difference value, specifically, subtracting the difference value from the technical parameter of the surface to be processed to obtain a parameter which is the modified technical parameter of the surface to be processed, and modifying the corresponding processing parameter in the construction order according to the modified technical parameter of the surface to be processed. The machining parameters of the construction sheet are modified instead of the accuracy of the machine, so that the success rate can be greatly improved, and the control error is within an allowable range.
And S5, processing the lens to be processed according to the adjusted processing parameters. The high-precision lens manufactured by the modified parameters has high success rate and low scrap rate.
Example 1
Taking the processing of a high-precision lens with a refractive index of 1.60 as an example, to achieve a refractive index of 1.60, the design parameters of the lens to be processed should be-300 degrees, the surface A of the lens is bent to +/-400 degrees,
the surface to be processed is the B surface, the technical parameters of the B surface are that the surface bending is-700 degrees, the center thickness is 1.4mm, the diameter of the lens is 70mm, and the allowable error is +/-1 degree.
Measuring technical parameters of a surface to be processed of the lens to be processed, and setting processing parameters of a construction order according to the technical parameters and the design parameters;
manufacturing a test piece with the same technical parameters as the lens to be processed, and cutting the test piece according to the processing parameters;
polishing the cut test piece;
measuring the lens power of the polished test piece to be-308 degrees, and the difference between the lens power and the lens design power is-8 degrees;
modifying the surface bend of the cut surface of the B surface of the lens in the design parameters to-700- (-8) -692 degrees according to the difference, and further modifying the corresponding processing parameters according to the adjustment of the design parameters of the surface to be processed;
and processing the lens to be processed according to the modified processing parameters to obtain the high-precision lens with the sphere power of-300 ℃ and meeting the design requirement of the construction order lens.
Example 2
Taking the processing of a high-precision lens with a refractive index of 1.60 as an example, to achieve a refractive index of 1.60, the design parameters of the lens to be processed should be-300 degrees, the surface A of the lens is bent to +/-400 degrees,
the surface to be processed is the B surface, the technical parameters of the B surface are that the surface bending is-700 degrees, the center thickness is 1.4mm, the diameter of the lens is 70mm, and the allowable error is +/-1 degree.
Measuring technical parameters of a surface to be processed of the lens to be processed, and setting processing parameters of a construction order according to the technical parameters and the design parameters;
manufacturing a test piece with the same technical parameters as the lens to be processed, and cutting the test piece according to the processing parameters;
polishing the cut test piece;
measuring the refractive index of the polished lens of the test piece to be 1.50, and measuring to obtain that the center thickness is 1.7mm and the difference with the designed center thickness of the surface to be processed is 0.3 mm;
modifying the center thickness of the cut surface B of the lens in the design parameters to be 1.4-0.3 mm-1.1 mm according to the difference, and modifying corresponding processing parameters in step according to the adjustment of the design parameters of the surface to be processed;
and processing the lens to be processed according to the modified processing parameters to obtain the high-precision lens with the sphere lens refractive index of 1.60 and meeting the design requirement of the construction single lens.
The process reduces the abrasion of the cutting blade, saves the lens blank, improves the success rate of high-precision lens processing to 50 percent, has the tolerance of +/-1 degree, and saves the manufacturing time and cost.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1, high-precision lens processing technology, which is characterized by comprising the following steps:
acquiring design parameters of a lens to be processed and technical parameters of a surface to be processed of the lens, and designing a construction sheet according to the design parameters and the technical parameters of the surface to be processed of the lens, wherein the construction sheet comprises processing parameters corresponding to the design parameters and the technical parameters of the surface to be processed of the lens;
obtaining a test piece with the same technical parameters as the lens to be processed, and cutting the test piece according to the processing parameters;
polishing the cut test piece;
measuring the difference value between the lens power of the polished test piece and the lens design power, and modifying the processing parameters according to the difference value;
and processing the lens to be processed according to the modified processing parameters.
2. The kinds of high precision lens processing technology of claim 1, wherein the design parameters of the lens to be processed include refractive index and lens power.
3. The kinds of high precision lens processing technology of claim 2, wherein the technical parameters of the surface to be processed include surface curvature, refractive index, diopter, diameter, center thickness, prism and add-on.
4. The high precision lens processing technology of claim 3, wherein the processing parameters include diopter, diameter, center thickness, prism and add.
5. The kinds of high precision lens processing technologies of claim 1, wherein the processing parameters are modified according to the difference, specifically, the difference is subtracted from the technical parameters of the surface to be processed, the obtained parameters are the modified technical parameters of the surface to be processed, and the corresponding processing parameters in the construction order are modified according to the modified technical parameters of the surface to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911019886.3A CN110737111A (en) | 2019-10-24 | 2019-10-24 | lens processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911019886.3A CN110737111A (en) | 2019-10-24 | 2019-10-24 | lens processing technology |
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| Publication Number | Publication Date |
|---|---|
| CN110737111A true CN110737111A (en) | 2020-01-31 |
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| CN201911019886.3A Pending CN110737111A (en) | 2019-10-24 | 2019-10-24 | lens processing technology |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424756A (en) * | 2007-10-31 | 2009-05-06 | 鸿富锦精密工业（深圳）有限公司 | Aspherical mirror integration processing system and method |
| WO2011085936A1 (en) * | 2010-01-18 | 2011-07-21 | Essilor International (Compagnie Generale D'optique) | Process for designing an ophthalmic progressive eyeglass |
| WO2016102998A1 (en) * | 2014-12-23 | 2016-06-30 | Essilor International (Compagnie Generale D'optique) | Ophthalmic lens treatment system |
| CN106738506A (en) * | 2016-12-12 | 2017-05-31 | 上海康耐特光学股份有限公司 | The making of progressive lenses mould and modification method and its obtained lens mold |
-
2019
- 2019-10-24 CN CN201911019886.3A patent/CN110737111A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424756A (en) * | 2007-10-31 | 2009-05-06 | 鸿富锦精密工业（深圳）有限公司 | Aspherical mirror integration processing system and method |
| WO2011085936A1 (en) * | 2010-01-18 | 2011-07-21 | Essilor International (Compagnie Generale D'optique) | Process for designing an ophthalmic progressive eyeglass |
| WO2016102998A1 (en) * | 2014-12-23 | 2016-06-30 | Essilor International (Compagnie Generale D'optique) | Ophthalmic lens treatment system |
| CN106738506A (en) * | 2016-12-12 | 2017-05-31 | 上海康耐特光学股份有限公司 | The making of progressive lenses mould and modification method and its obtained lens mold |
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Application publication date: 20200131 |