CN108803077B - Contact lens for correcting achromatopsia and manufacturing method thereof - Google Patents
Contact lens for correcting achromatopsia and manufacturing method thereof Download PDFInfo
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- CN108803077B CN108803077B CN201810599693.9A CN201810599693A CN108803077B CN 108803077 B CN108803077 B CN 108803077B CN 201810599693 A CN201810599693 A CN 201810599693A CN 108803077 B CN108803077 B CN 108803077B
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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
- G02C7/04—Contact lenses for the eyes
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Abstract
A color blindness and color weakness correcting contact lens and a manufacturing method thereof relate to the technical field of contact lenses, the color blindness and color weakness correcting contact lens comprises an outer surface layer, a middle layer, a color blindness correcting film and an inner layer, the manufacturing method of the color blindness and color weakness correcting contact lens mainly comprises three steps, namely, a first step of manufacturing the middle layer and the inner layer by adopting a mold, a second step of adhering a layer of OCA optical cement on both surfaces of the color blindness correcting film, and a third step of compounding the middle layer, the color blindness correcting film and the inner layer into a complex from top to bottom in sequence, and forming and coating the outer surface layer on the upper surface of the complex, thereby forming the lens. The color blindness and color weakness correcting contact lens manufactured by the manufacturing method of the color blindness and color weakness correcting contact lens has good color blindness and color weakness correcting effect and high stability.
Description
Technical Field
The invention relates to the technical field of contact lenses, in particular to a color blindness and color weakness correcting contact lens and a manufacturing method thereof.
Background
Achromatopsia and amblyopia are congenital visual disorders, a certain color or a plurality of colors cannot be distinguished or are difficult to distinguish, inconvenience is brought to patients, no effective treatment method exists in the world at present, and patients with achromatopsia and amblyopia can only be corrected by wearing glasses.
The traditional color-blind glasses mainly comprise frame-type color-blind glasses, wherein a film with color-blind correction function is plated on the surface of the common frame-type glasses, for example, patent document with application number of CN200520047432 discloses 'color-blind correction glasses for improving lens transparency', the glasses are plated with color-blind correction films, and patent document with application number of CN200810038760 discloses 'color-blind correction glasses', and the glasses are plated with film coating layers for correcting spectral curves on the inner sides of the lenses. The traditional frame type achromatopsia glasses are simple in manufacturing method and obvious in achromatopsia correction effect, but the frame type achromatopsia glasses have larger limitations and more influence on attractiveness as common frame glasses, and are not suitable for use in certain specific occasions, such as: and (6) participating in the performance.
In view of the above reasons, color-blind contact lenses are gradually appearing on the market, and the structures of the existing color-blind contact lenses are mainly divided into two types, one type is that a color-blind correction film is plated on the outer surface of a common contact lens, the manufacturing process of the color-blind contact lens is very simple, but the color-blind correction film of the lens is often contacted with external substances such as air, cleaning solution and the like, and is easily damaged, so that the correction effect of the color-blind correction film is influenced, and therefore, the color-blind contact lens has poor stability and short service life; secondly, the color blindness contact lens adopts a three-layer sandwich structure, the lens sequentially comprises an outer surface layer, a color blindness correction film and an inner surface layer from top to bottom, the outer surface layer is firstly molded by a mold, then a color blindness correction film is printed on the outer surface layer, and finally the inner surface layer is molded above the color blindness correction film.
Disclosure of Invention
The invention provides a contact lens for color blindness and color weakness correction and a manufacturing method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: a method for manufacturing a contact lens for color blindness and color weakness correction, the contact lens comprises an outer surface layer, an intermediate layer, a color blindness correction film and an inner layer, and the manufacturing process of the contact lens comprises the following steps:
step one, manufacturing a middle layer and an inner layer through mold forming, wherein the lower surface of the middle layer is matched with the upper surface of the inner layer, the lower surface of the middle layer is an inwards concave cambered surface, and the upper surface of the inner layer is an outwards convex cambered surface;
step two, taking a No. 1 release film, a No. 2 release film and a No. 3 release film, plating a layer of color blindness correction film on the surface of the No. 1 release film in vacuum, coating a layer of OCA optical cement on the surfaces of the No. 2 release film and the No. 3 release film under vacuum, adhering the OCA optical cement on the No. 2 release film to the upper surface of the color blindness correction film under vacuum, stripping the color blindness correction film from the No. 1 release film, and adhering the OCA optical cement on the No. 3 release film to the lower surface of the color blindness correction film under vacuum;
and thirdly, tearing off the release film No. 3, bonding the lower surface of the color blindness correction film and the upper surface of the inner layer together through the OCA optical cement on the lower surface of the color blindness correction film, then tearing off the release film No. 2, bonding the upper surface of the color blindness correction film and the lower surface of the middle layer together through the OCA optical cement on the upper surface of the color blindness correction film, compounding the middle layer, the color blindness correction film and the inner layer into a complex from top to bottom, finally placing the complex into a mold, and forming and coating the outer surface layer on the outer side surface of the complex by using the mold, thereby forming the lens.
Further, the release force between No. 1 from type membrane and the achromatopsia correction membrane is less than the release force between No. 2 from type membrane and OCA optical cement, the release force between No. 3 from type membrane and OCA optical cement is also less than the release force between No. 2 from type membrane and OCA optical cement.
Further, the light transmittance of the OCA optical cement exceeds 90%, and the thickness of the OCA optical cement is not more than 0.005 mm.
Further, in the third step, the intermediate layer, the color blindness correction film and the inner layer are compounded into a composite body, and then the composite body is subjected to polymerization curing treatment by adopting a normal-temperature curing or light curing mode.
Furthermore, in step one, the prepared intermediate layer and the inner layer are hydrated, and in step three, the molded lens is also hydrated.
Further, the color-blindness correction film is bonded to the middle of the intermediate layer and the inner layer, and the area of the color-blindness correction film is not larger than the area of the lower surface of the intermediate layer.
Preferably, the color-blind correction film is a circular film, and the diameter of the circular film is equal to the diameter of the pupil of a human eyeball.
Or the color blindness correction film is an annular film, the inner diameter of the annular film is 1/2 the diameter of the pupil of the human eyeball, and the outer diameter of the annular film is equal to the diameter of the pupil of the human eyeball.
The invention also provides a color blindness color weakness correcting contact lens, which is manufactured by adopting the manufacturing method of the color blindness color weakness correcting contact lens.
The invention has provided a achromatopsia to correct the contact lens and its preparation method, in the preparation method of the invention, the exterior layer, intermediate layer and inner layer are injected plastics separately, can guarantee the structural stability of the three effectively, the lower surface of the intermediate layer is fitted with the upper surface of the inner layer, the lower surface of the intermediate layer is the cambered surface of the indent, the upper surface of the inner layer is the cambered surface of the evagination, the cambered surface can guarantee the achromatopsia to correct the membrane to bond between intermediate layer and inner layer in the form of cambered surface in the next process effectively, because the shape of the cambered surface is similar to shape of human eyeball, therefore can make the achromatopsia correct the membrane to exert the achromatopsia better and correct the function; in addition, in the manufacturing method of the invention, the color blindness correction film is not directly plated on the OCA optical adhesive, but the color blindness correction film is firstly plated on the release film and then adhered on the OCA optical adhesive, and the method can effectively ensure the flatness of the surface of the color blindness correction film; secondly, the color blindness correction film is firmly adhered between the middle layer and the inner layer by utilizing the characteristic of strong adhesive force of the OCA optical cement, the middle layer and the inner layer form a complex, and the outer surface layer of the complex is wrapped by utilizing the outer surface layer, so that the color blindness correction film can be effectively prevented from being corroded and damaged by external substances, and the stability of the color blindness correction film correction effect is ensured; finally, it is emphasized in the above manufacturing process that OCA optical cement has a light transmittance of more than 90%, even up to 95%, and is bonded into a lens without substantially affecting the transmission of light. Therefore, compared with the prior art, the color blindness and color weakness correcting contact lens manufactured by the manufacturing method of the color blindness and color weakness correcting contact lens has the advantages of good color blindness and color weakness correcting effect and high stability.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a color-blind correcting contact lens involved in the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a cross-sectional view of the color-blindness correction film manufactured in step two of the present invention.
The reference signs are:
1-middle layer 2-inner layer 3-color blindness correction film
No. 4-external surface layer 5-OCA optical cement No. 6-2 release film
No. 7-3 release film.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Fig. 1 and 2 are diagrams showing the structure of a contact lens for color blindness and color amblyopia correction manufactured by the method for manufacturing a contact lens for color blindness and color amblyopia correction according to the present embodiment, the contact lens comprising an outer layer 4, an intermediate layer 1, a color blindness correction film 3 and an inner layer 2, the process for manufacturing the contact lens comprising the steps of:
step one, manufacturing a middle layer 1 and an inner layer 2 through mold forming, wherein the lower surface of the middle layer 1 is matched with the upper surface of the inner layer 2, the lower surface of the middle layer 1 is an inwards concave cambered surface, and the upper surface of the inner layer 2 is an outwards convex cambered surface;
step two, taking a release film No. 1, a release film No. 2, a release film No. 3 and a release film No. 6, vacuum-plating a layer of color blindness correction film 3 on the surface of the release film No. 1, coating a layer of OCA optical cement 5 on the surfaces of the release film No. 2 and the release film No. 3 under a vacuum condition, adhering the OCA optical cement 5 on the release film No. 2 to the upper surface of the color blindness correction film 3 under the vacuum condition, stripping the color blindness correction film 3 from the release film No. 1, and adhering the OCA optical cement 5 on the release film No. 3 to the lower surface of the color blindness correction film No. 3 under the vacuum condition; as shown in fig. 3, OCA optical cement 5 is adhered to both the upper surface and the lower surface of the color-blindness correction film 3;
and thirdly, tearing off the release film No. 3, adhering the lower surface of the color blindness correction film 3 and the upper surface of the inner layer 2 together through the OCA optical cement 5 on the lower surface of the color blindness correction film 3, then tearing off the release film No. 2, adhering the upper surface of the color blindness correction film 3 and the lower surface of the middle layer 1 together through the OCA optical cement 5 on the upper surface of the color blindness correction film 3, compounding the middle layer 1, the color blindness correction film 3 and the inner layer 2 into a composite body from top to bottom, finally placing the composite body in a mold, and forming and coating the outer surface layer 4 on the outer side surface of the composite body by using the mold, so as to form the lens, wherein the arrangement relationship among all layers of the composite lens is shown in the figure 2.
In the prior art, there are various manufacturing methods for adhering the OCA optical cement 5 to the color-blindness correction film 3, and most commonly, the color-blindness correction film 3 is directly plated on the OCA optical cement 5, which is simple, but the surface flatness of the manufactured color-blindness correction film 3 is not good, because, in a microscopic view, the surface of the OCA optical cement is a frosted surface, and the film plating on the frosted surface can hardly ensure the flatness of the film, in this embodiment, the color-blindness correction film 3 is firstly plated on the release film No. 1, and then the OCA optical cement of the release film No. 2 is adhered to the color-blindness correction film 3, and the release film has a smooth and flat characteristic, so that the flatness of the surface of the color-blindness correction film 3 can be effectively ensured, and the surface of the color-blindness correction film 3 is more flat, and the color-blindness correction effect is better.
In the manufacturing method of the above embodiment, it should be noted that, since the inner layer 2 is a soft arc-shaped body, in order to ensure that the inner layer 2 does not deform or shift during the process of adhering to the color-blind correction film 3 and the adhesion precision of the inner layer 2 to the color-blind correction film 3 is not affected, the inner layer 2 should be placed on a fixed seat with a cambered top or the inner layer 2 should be positioned by using other precise machinery and then operated, and the contact surfaces of the fixed seat and the inner layer 2 are fitted and attached to each other.
Further, the release force between the release film No. 1 and the color blindness correction film 3 is smaller than the release force between the release film No. 2 and the OCA optical cement 5, and the release force between the release film No. 3 and the OCA optical cement 5 is also smaller than the release force between the release film No. 2 and the OCA optical cement 5.
Further, the OCA optical adhesive 5 in the above embodiment has a light transmittance of 95% and a thickness of 0.002 mm.
Further, in the third step, the intermediate layer 1, the color blindness correcting film 3, and the inner layer 2 are compounded into a composite, and then the composite is subjected to polymerization curing treatment by means of normal temperature curing or light curing.
Further, in the first step, the prepared intermediate layer 1 and inner layer 2 are hydrated, and in the third step, the molded lens is also hydrated.
Still further, the color-blindness correction film 3 is bonded to the middle of the intermediate layer 1 and the inner layer 2, and the area of the color-blindness correction film 3 is smaller than the area of the lower surface of the intermediate layer 1.
Preferably, the color-blind correcting film 3 is a circular film having a diameter equal to that of the pupil of a human eyeball.
Alternatively, the color blindness correction film 3 is a ring-shaped film having an inner diameter 1/2 which is the diameter of the pupil of the human eyeball and an outer diameter equal to the diameter of the pupil of the human eyeball.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (7)
1. A method for manufacturing a contact lens for correcting achromatopsia and achromatopsia is characterized in that the contact lens comprises an outer surface layer, an intermediate layer, an achromatopsia correcting film and an inner layer, and the manufacturing process of the contact lens comprises the following steps:
step one, manufacturing a middle layer and an inner layer through mold forming, wherein the lower surface of the middle layer is matched with the upper surface of the inner layer, the lower surface of the middle layer is an inwards concave cambered surface, and the upper surface of the inner layer is an outwards convex cambered surface;
step two, taking a No. 1 release film, a No. 2 release film and a No. 3 release film, plating a layer of color blindness correction film on the surface of the No. 1 release film in vacuum, coating a layer of OCA optical cement on the surfaces of the No. 2 release film and the No. 3 release film under vacuum, adhering the OCA optical cement on the No. 2 release film to the upper surface of the color blindness correction film under vacuum, stripping the color blindness correction film from the No. 1 release film, and adhering the OCA optical cement on the No. 3 release film to the lower surface of the color blindness correction film under vacuum; the release force between the No. 1 release film and the color blindness correction film is smaller than that between the No. 2 release film and the OCA optical adhesive, and the release force between the No. 3 release film and the OCA optical adhesive is also smaller than that between the No. 2 release film and the OCA optical adhesive; the light transmittance of the OCA optical cement exceeds 90%, and the thickness of the OCA optical cement is not more than 0.005 mm;
and thirdly, tearing off the release film No. 3, bonding the lower surface of the color blindness correction film and the upper surface of the inner layer together through the OCA optical cement on the lower surface of the color blindness correction film, then tearing off the release film No. 2, bonding the upper surface of the color blindness correction film and the lower surface of the middle layer together through the OCA optical cement on the upper surface of the color blindness correction film, compounding the middle layer, the color blindness correction film and the inner layer into a complex from top to bottom, finally placing the complex into a mold, and forming and coating the outer surface layer on the outer side surface of the complex by using the mold, thereby forming the lens.
2. The method of making a contact lens for color blindness and color weakness correction according to claim 1, wherein: in the third step, the intermediate layer, the color blindness correction film and the inner layer are compounded into a complex, and then the complex is subjected to polymerization curing treatment by adopting a normal-temperature curing or photocuring mode.
3. The method of making a contact lens for color blindness and color weakness correction according to claim 2, wherein: in the first step, the prepared middle layer and the inner layer are hydrated, and in the third step, the molded lens is also hydrated.
4. The method of manufacturing a contact lens for correcting achromatopsia and achromatopsia as defined in claim 3, wherein: the color blindness correction film is adhered to the middle of the middle layer and the inner layer, and the area of the color blindness correction film is not larger than that of the lower surface of the middle layer.
5. The method of making a contact lens for color blindness and color weakness correction according to claim 4, wherein: the color blindness correction film is a circular film, and the diameter of the circular film is equal to that of the pupil of a human eyeball.
6. The method of making a contact lens for color blindness and color weakness correction according to claim 4, wherein: the color blindness correction film is an annular film, and the inner diameter of the annular film is 1/2 which is the diameter of the pupil of the human eyeball.
7. A contact lens for correcting achromatopsia and achromatopsia, comprising: the method for manufacturing a contact lens for correcting achromatopsia and achromatopsia according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810599693.9A CN108803077B (en) | 2018-06-12 | 2018-06-12 | Contact lens for correcting achromatopsia and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810599693.9A CN108803077B (en) | 2018-06-12 | 2018-06-12 | Contact lens for correcting achromatopsia and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN108803077A CN108803077A (en) | 2018-11-13 |
| CN108803077B true CN108803077B (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810599693.9A Active CN108803077B (en) | 2018-06-12 | 2018-06-12 | Contact lens for correcting achromatopsia and manufacturing method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027405A (en) * | 2008-05-13 | 2011-04-20 | 帝人化成株式会社 | Polarizing eyeglass lens |
| CN104527196A (en) * | 2014-12-29 | 2015-04-22 | 宁波大榭开发区综研化学有限公司 | Method for preparing thick optical cement without base material |
| CN105295758A (en) * | 2015-10-14 | 2016-02-03 | 东莞市纳利光学材料有限公司 | Optical film with multiple composite OCA (Optical Clear Adhesive) layers and preparation method of optical film |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8931930B2 (en) * | 2013-01-29 | 2015-01-13 | Nitto Denko Corporation | Optical element for correcting color blindness |
| FR3039659B1 (en) * | 2015-07-28 | 2018-08-17 | Essilor International | OPHTHALMIC LENS AND METHOD OF MANUFACTURING THE SAME |
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2018
- 2018-06-12 CN CN201810599693.9A patent/CN108803077B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102027405A (en) * | 2008-05-13 | 2011-04-20 | 帝人化成株式会社 | Polarizing eyeglass lens |
| CN104527196A (en) * | 2014-12-29 | 2015-04-22 | 宁波大榭开发区综研化学有限公司 | Method for preparing thick optical cement without base material |
| CN105295758A (en) * | 2015-10-14 | 2016-02-03 | 东莞市纳利光学材料有限公司 | Optical film with multiple composite OCA (Optical Clear Adhesive) layers and preparation method of optical film |
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| CN108803077A (en) | 2018-11-13 |
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