CN113334649A - Machine manufacturing method of full-view arc progressive lens - Google Patents
Machine manufacturing method of full-view arc progressive lens Download PDFInfo
- Publication number
- CN113334649A CN113334649A CN202110604514.8A CN202110604514A CN113334649A CN 113334649 A CN113334649 A CN 113334649A CN 202110604514 A CN202110604514 A CN 202110604514A CN 113334649 A CN113334649 A CN 113334649A
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- Prior art keywords
- mold core
- progressive
- auxiliary
- lens
- grinding
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- 230000000750 progressive effect Effects 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 5
- 230000004438 eyesight Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004379 myopia Effects 0.000 description 2
- 208000001491 myopia Diseases 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
- B29L2011/0033—Multifocal lenses
Abstract
The invention discloses a machine manufacturing method of a full-view arc progressive lens, which comprises the following steps: the first step is as follows: fixing the ground circle center outside the mold core to make the auxiliary mold core fit with the original cavity core; the second step is as follows: grinding the required curvature by drawing a circle on the auxiliary die core with the increased radius, wherein the grinding range comprises the original female die core; the third step: grinding and carving the auxiliary mold core within the radius range with the center of the auxiliary mold core as the center point; the lens power structure injection molded by the invention ensures that the power range of the lower beam is in an arc-shaped area, the power progressive direction and principle are unchanged, the power progressive direction is gradually increased from the periphery of a circle to the direction of a circle center, and the mold core formed by grinding and carving the lens is used for grinding the lens, so that the progressive direction tends to be progressive from the top to the bottom (progressive from far to near), the problem of a blind area is solved, and the optical principle of a human body is better met; the visual field is wider, and the vision is more comfortable.
Description
Technical Field
The invention relates to a manufacturing method, in particular to a machine manufacturing method of a full-view arc progressive lens, and belongs to the technical field of lens processing.
Background
Progressive multifocal lens, it is a functional lens, is different from single optical lens, has 2 visual areas on the lens, go up light zone and lower light zone, go up light zone see far away, lower light zone see near, according to human optical principle, see that the degree of distance is different with the degree of near distance, for example: for example, when a student with myopia to 300 degrees wears glasses with myopia to 300 degrees, the degree is used for seeing the distance, the distance can be clearly seen only by about-200 degrees, if the student uses the distance degree for seeing the distance for a long time, when the student is used for seeing the distance at-300 degrees, the distance degree can be quickly increased, and therefore the progressive multi-focus lens is slowly accepted and widely used; in particular to the use of the glasses for preventing and controlling the vision of schoolchildren and the anti-fatigue glasses.
The PC lens is manufactured by the steps of providing 2 mold cores (as injection molding lens models), determining the degree of the lens by the different curvatures of the upper surfaces of the mold cores, determining the thickness of the lens (the distance between the mold cores is adjusted and fixed by a mold base) by the distance between the two mold cores, finishing grinding and carving on the mold cores, and determining the degree of the injection molded lens by the curvature of the mold cores (as shown in figure 1).
The production method is based on the principle that compasses draw circles, the position of the circle center is fixed on a mold core, a grinding carving knife is arranged at the radius position, and the camber (degree) is ground and carved in a circle drawing mode.
At present, progressive multi-focus lens on the market, its preparation method is in the lower light zone of mould benevolence, grinds the sculpture and goes out required number of degrees (as shown in figure 2), and the number of degrees of lower light zone is the number of degrees that advances gradually, and the periphery of by the circle is progressive to the centre of a circle direction (the mode that positive number increases gradually), so can produce two problems: first, the blind area problem (as shown in fig. 2), the puzzlement that the blind area caused is to wear glasses, and clear visual area only limits the central upper and lower position at the lens, looks at the blind area position when the sight is toward the next place, can produce fuzzy image. Secondly, the gradual grinding in the downward light area (as shown in fig. 2) gradually progresses from the outer circle to the center of the circle, so that the gradual grinding cannot match the distance, and the visual comfort is affected by the gradual mode from far distance to near distance (for example, the distance is-300 degrees, and the degree is gradually reduced according to the distance to-200 degrees at the near distance).
In the traditional progressive multi-focus lens, the manufacturing of the mold core is limited by the technology, and the measure for solving the blind area can only be processed by increasing the radius of the lower beam, so that the blind area can only be reduced a little, and the progressive direction of the lower beam can not be improved as the blind area can not be eliminated completely.
Disclosure of Invention
The present invention is directed to a method for manufacturing a full-field arc progressive lens by a machine, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a method of machine-making a full field of view curved progressive addition lens, the method comprising:
the first step is as follows: fixing the ground circle center outside the mold core to make the auxiliary mold core fit with the original cavity core;
the second step is as follows: grinding the required curvature by drawing a circle on the auxiliary die core with the increased radius, wherein the grinding range comprises the original female die core;
the third step: grinding and carving the auxiliary mold core within the radius range of the auxiliary mold core by taking the center of the auxiliary mold core as a central point, wherein the carving range comprises an arc-shaped notch of the auxiliary mold core, and the notch is a lower light area of the female mold core;
the fourth step: and (3) injection molding a lens power structure to enable the power range of the lower light to be an arc-shaped area.
As a preferred technical solution of the present invention, in the first step, the auxiliary mold is an auxiliary platform and is disposed in a polishing range of a polishing tool.
As a preferred technical scheme of the invention, the side of the auxiliary platform is provided with an arc-shaped notch, and the arc-shaped notch is completely, tightly and seamlessly connected with the edge of the cavity insert.
As a preferred technical solution of the present invention, in the third step, the power structure of the lens molded by injection molding makes the power range of the lower beam be an arc-shaped area, and the direction and principle of the power progression are unchanged, and the power progression progresses from the periphery of the circle to the center of the circle.
As a preferred technical solution of the present invention, in the second step, the required curvature is ground by rounding the sub-mold core with the increased radius, so that the required lower luminosity number can be engraved in the proper position of the cavity core.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a machine manufacturing method of a full-visual-field arc progressive lens, wherein an injection molded lens power structure enables the power range of a down light to be an arc area, the power progressive direction and principle of the lens are unchanged, and the lens is gradually increased from the periphery of a circle to the direction of a circle center, so that a mold core formed by grinding and carving is used for gradually increasing the progressive direction of the injection molded lens from top to bottom (gradually increasing from far to near), the problem of a blind area is solved, and the optical principle of a human body is better met; the visual field is wider, and the vision is more comfortable.
Drawings
FIG. 1 is a schematic view of the injection molded lens mold of the present invention;
FIG. 2 is a schematic structural diagram of a progressive addition lens manufactured by a conventional manufacturing method according to the present invention;
FIG. 3 is a schematic structural diagram of an auxiliary platform according to the present invention;
FIG. 4 is a schematic view of a structure of the present invention in which the auxiliary cavity and the original cavity are attached to each other;
FIG. 5 is a schematic diagram of the power structure of the injection molded lens of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution of a machine manufacturing method of a full-field arc progressive lens:
a machine-made method of a full-view arc progressive lens comprises the following steps:
the first step is as follows: fixing the ground circle center outside the mold core to make the auxiliary mold core fit with the original cavity core;
specifically, as shown in fig. 3, the auxiliary mold core is an auxiliary platform and is disposed in the polishing range of the polishing pad;
the second step is as follows: grinding the required curvature by drawing a circle on the auxiliary die core with the increased radius, wherein the grinding range comprises the original female die core;
specifically, the required curvature is ground by drawing a circle on the auxiliary mold core with the increased radius, so that the required lower luminosity number can be carved at the proper position of the cavity core.
The third step: grinding and carving the auxiliary mold core within the radius range of the auxiliary mold core by taking the center of the auxiliary mold core as a central point, wherein the carving range comprises an arc-shaped notch of the auxiliary mold core, and the notch is a lower light area of the female mold core;
specifically, as shown in fig. 4, an arc-shaped notch is formed on the side of the auxiliary platform, and the arc-shaped notch is completely, tightly and seamlessly connected with the edge of the cavity.
The fourth step: and (3) injection molding a lens power structure to enable the power range of the lower light to be an arc-shaped area.
Specifically, as shown in fig. 5, the power structure of the injection molded lens makes the power range of the downlight be an arc-shaped area, the power progressive direction and principle of the lens are unchanged, and the lens is gradually developed from the circular periphery to the circle center, so that the mold core formed by grinding and engraving is used, and the progressive direction of the injection molded lens tends to be progressive from top to bottom (progressive from far to near), so that the problem of a blind area is solved, and the optical principle of a human body is better met; the visual field is wider, and the vision is more comfortable.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method of machine-making a full field of view curved progressive lens, the method comprising:
the first step is as follows: fixing the ground circle center outside the mold core to make the auxiliary mold core fit with the original cavity core;
the second step is as follows: grinding the required curvature by drawing a circle on the auxiliary die core with the increased radius, wherein the grinding range comprises the original female die core;
the third step: grinding and carving the auxiliary mold core within the radius range of the auxiliary mold core by taking the center of the auxiliary mold core as a central point, wherein the carving range comprises an arc-shaped notch of the auxiliary mold core, and the notch is a lower light area of the female mold core;
the fourth step: and (3) injection molding a lens power structure to enable the power range of the lower light to be an arc-shaped area.
2. A method of machine-making a full-field arcuate progressive addition lens according to claim 1, wherein: in the first step, the auxiliary mold core is an auxiliary platform and is arranged in the polishing range of the lower light.
3. A method of machine-making a full-field arcuate progressive addition lens according to claim 2, wherein: an arc-shaped notch is formed in the side of the auxiliary platform, and the arc-shaped notch is completely, tightly and seamlessly connected with the edge of the cavity insert.
4. A method of machine-making a full-field arcuate progressive addition lens according to claim 1, wherein: in the third step, the power structure of the lens injected makes the power range of the lower beam be an arc area, the progressive direction and principle of the power are unchanged, and the progressive direction is from the periphery of the circle to the center of the circle.
5. A method of machine-making a full-field arcuate progressive addition lens according to claim 1, wherein: in the second step, the required curvature is ground by drawing a circle on the auxiliary mold core with the increased radius, so that the required lower luminosity number can be engraved at the proper position of the cavity core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604514.8A CN113334649A (en) | 2021-05-31 | 2021-05-31 | Machine manufacturing method of full-view arc progressive lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604514.8A CN113334649A (en) | 2021-05-31 | 2021-05-31 | Machine manufacturing method of full-view arc progressive lens |
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| Publication Number | Publication Date |
|---|---|
| CN113334649A true CN113334649A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110604514.8A Pending CN113334649A (en) | 2021-05-31 | 2021-05-31 | Machine manufacturing method of full-view arc progressive lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474586A (en) * | 2021-11-10 | 2022-05-13 | 阿尔玻科技有限公司 | Defocused lens forming die |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882775A (en) * | 1994-09-09 | 1996-03-26 | Micro Eng Kk | Bifocal spectacle lens for far and near sight and its production |
| JP2000039594A (en) * | 1998-07-23 | 2000-02-08 | Asahi Optical Co Ltd | Production of glass die for progressive multifocal lens and machining device therefor |
| CN101513757A (en) * | 2008-10-20 | 2009-08-26 | 瑞之路(厦门)眼镜科技有限公司 | Process and method for producing lens with multi-prescription by one mould |
| CN105589215A (en) * | 2016-03-08 | 2016-05-18 | 李国荣 | Thermoplasticity inner progressive lens and machining method thereof |
| CN205450481U (en) * | 2016-03-08 | 2016-08-10 | 李国荣 | Lens advances gradually in thermoplasticity |
| CN211741756U (en) * | 2020-02-21 | 2020-10-23 | 江苏明世光学科技有限公司 | Bifocal composite progressive multi-focus spectacle lens |
-
2021
- 2021-05-31 CN CN202110604514.8A patent/CN113334649A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882775A (en) * | 1994-09-09 | 1996-03-26 | Micro Eng Kk | Bifocal spectacle lens for far and near sight and its production |
| JP2000039594A (en) * | 1998-07-23 | 2000-02-08 | Asahi Optical Co Ltd | Production of glass die for progressive multifocal lens and machining device therefor |
| CN101513757A (en) * | 2008-10-20 | 2009-08-26 | 瑞之路(厦门)眼镜科技有限公司 | Process and method for producing lens with multi-prescription by one mould |
| CN105589215A (en) * | 2016-03-08 | 2016-05-18 | 李国荣 | Thermoplasticity inner progressive lens and machining method thereof |
| CN205450481U (en) * | 2016-03-08 | 2016-08-10 | 李国荣 | Lens advances gradually in thermoplasticity |
| CN211741756U (en) * | 2020-02-21 | 2020-10-23 | 江苏明世光学科技有限公司 | Bifocal composite progressive multi-focus spectacle lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474586A (en) * | 2021-11-10 | 2022-05-13 | 阿尔玻科技有限公司 | Defocused lens forming die |
| CN114474586B (en) * | 2021-11-10 | 2023-10-03 | 阿尔玻科技有限公司 | Defocused lens forming die |
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