CN115071183A - Method for manufacturing differentiated defocusing increment resin lens - Google Patents
Method for manufacturing differentiated defocusing increment resin lens Download PDFInfo
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- CN115071183A CN115071183A CN202210472566.9A CN202210472566A CN115071183A CN 115071183 A CN115071183 A CN 115071183A CN 202210472566 A CN202210472566 A CN 202210472566A CN 115071183 A CN115071183 A CN 115071183A
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00028—Bifocal lenses; Multifocal lenses
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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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
- G02C7/063—Shape of the progressive surface
- G02C7/066—Shape, location or size of the viewing zones
Abstract
The invention provides a method for manufacturing a differential defocusing increment resin lens, which solves the problems of poor defocusing amount processing effect and the like of a conventional resin lens, and comprises the following steps of: injecting the resin raw material into a mould after preparation, and carrying out primary curing to obtain a semi-finished blank lens; carrying out partition processing on the semi-finished blank lens; and carrying out secondary curing on the semi-finished product blank lens to obtain a finished product blank lens, and carrying out edge grinding and polishing on the finished product blank lens. The resin is cured for the first time and the second time, the partition processing is realized in the curing process, and the defocusing increment differentiation is improved, so that the defocusing amount effect of the processed lens is ensured. The invention has the advantages of good processing effect and the like.
Description
Technical Field
The invention belongs to the technical field of resin lenses, and particularly relates to a method for manufacturing a differentiated defocusing increment resin lens.
Background
With the continuous understanding of myopia control by people in recent years, a large number of myopia lenses adopting the out-of-focus lenses for myopia control are continuously published, and a large number of argumentations are also obtained in clinical tests, so that the myopia out-of-focus lenses are effective in effectively slowing down the myopia deepening of teenagers. There are also many inventions relating to out-of-focus lenses, for example as follows:
CN210465890U discloses a spherical defocus resin lens, which comprises a spherical central optical zone for correcting ametropia, a spherical sector far vision zone for correcting ametropia and a spherical multi-zone progressive defocus zone extending from the lens central zone to the periphery of the lens, wherein the spherical central optical zone is arranged in the central zone of the resin lens, the spherical sector far vision zone is arranged above the spherical central optical zone, and the spherical multi-zone progressive defocus zone is arranged at the periphery of the spherical sector far vision zone and the spherical central optical zone and surrounds the two zones; the design can provide a wide visual area and is easy to adapt, and the peripheral gradually-changed defocusing area can effectively control the growth of myopic eyeballs and effectively prevent and control the increase of myopia degrees of children.
CN112578578A discloses an out-of-focus surface type myopia prevention and control lens, which comprises a lens body with a refractive surface, wherein the lens body has a horizontal meridian and a vertical meridian. The optical area of the lens body is divided into a central vision area and a peripheral defocusing vision area, the central vision area is an asymmetric optical fixed focus area, and the peripheral defocusing vision area is divided into an upper defocusing area and a lower defocusing area by a horizontal meridian. The upper defocusing area is symmetrically distributed about a vertical meridian, the lower defocusing area is an asymmetric optical defocusing area, and defocusing amount changes on the left side and the right side are different. The horizontal and vertical meridians have different variations in their photometric distributions. The lens body is provided with the central vision area and the peripheral defocusing vision area, a clear vision field can be formed in the fovea of the retina through the change of the luminosity distribution, the myopic defocusing is formed around the retina, and the myopia progress can be delayed and controlled.
CN113352660A proposes a method for preparing an out-of-focus lens, which comprises the following steps: the first die and the second die form a sealed cavity, the working surface of the first die is provided with concave points, the working surface of the second die is a smooth surface, a resin monomer is filled into the sealed cavity, and after heating and curing, the die is peeled off to obtain a single-layer blank semi-finished product; trimming the single-layer blank semi-finished product for subsequent assembly production; and (3) taking the single-layer blank as a lens mold, forming a sealed cavity with a third mold matched with the single-layer blank, filling a resin monomer into the sealed cavity, heating and curing, and stripping the third mold to obtain the defocused lens blank. The invention utilizes the reusable glass mold to produce the defocusing lens, and the production process of the matched resin lens is greatly improved in the aspects of production efficiency and cost.
The invention relates to a lens for slowing down myopia progression, which comprises two layers of resin monomers and an optical plastic film arranged between the two layers of resin monomers, wherein the optical plastic film sequentially comprises a central plain area, an out-of-focus refractive area and an outer plain area from inside to outside, and the out-of-focus refractive area is a discontinuous out-of-focus refractive area. The invention utilizes the optical plastic film to manufacture the functional film with the defocusing effect, and the functional film is arranged in the middle of the resin lens, so that the lens can still play a role of preventing and controlling myopia, small bulges do not exist on the surface of the lens, the uniformity of hardening and coating is not influenced in the subsequent hardening and coating processes, and the lens is simpler and more thorough when being worn in daily life and cleaned.
CN215867414U the utility model discloses a defocus lens that defocus region is conch shape, including central bright visual area, peripheral hyperopia defocus correction district and peripheral sight blocking area distribute outwards in proper order from lens optics center. The central bright visual area of the lens is a rotationally symmetric aspheric surface; the peripheral hyperopia defocusing correction area has a shell-shaped structure with a flat contour line of a far vision area at the upper part, two horizontal side areas at the middle part which are transversely wide and a reading fixation area at the lower part which is inwards deviated towards the nasal side; the outermost periphery of the lens is a deformed zone that blocks vision. The utility model provides a defocusing lens, owing to adopted functional subregion structure, the functional of peripheral defocusing correction of formation combines together with wearing the travelling comfort, can effectively balance the functional of wearing travelling comfort and defocusing correction effect when reading.
CN113568187A the present invention provides a double-sided compound defocus lens for reducing decentered far-vision defocus at side center, which comprises a lens body, wherein the lens body is formed by overlapping a front surface and a back surface, the front surface is a surface type with optical power changing reversely, the back surface is a surface type with optical power changing forwardly, and the lens body comprises an optical center, a central bright visual area, a defocus compensation value measurement point and an astigmatism control area. The invention has the advantages of functionality of inhibiting the growth of the axis of the eye, matching wearing adaptability and compliance, delaying the myopia and deepening the effect, and the like.
CN213934460U the utility model provides a myopic, hyperopic and defocused lens, which relates to the technical field of lenses and solves the technical problem existing in the prior art that the myopic lens or hyperopic lens has poor vision deepening effect, comprising a lens provided with an optical correcting area and an imaging defocusing area, wherein the optical correcting area is arranged in the middle position of the lens; the imaging defocusing area comprises a peripheral defocusing area and a peripheral defocusing area which are sequentially arranged from inside to outside, the peripheral defocusing area is arranged on the outer side of the optical correction area in a surrounding mode, and first defocusing parts are uniformly arranged on the peripheral defocusing area; the number of the peripheral defocusing areas is at least three, all the peripheral defocusing areas are sequentially arranged on the outer side of the peripheral defocusing areas at intervals from inside to outside, and second defocusing parts are uniformly arranged on the peripheral defocusing areas; the utility model discloses a vision correction effect in vision correction district is showing, mutually supports through peripheral out-of-focus district and peripheral out-of-focus district, can show increase out-of-focus area, adjusts the retina out-of-focus, and vision delay effect is showing, wears the clarity simultaneously.
CN110068938A is a peripheral out of focus lens of nose temporal side based on eye adjusts set belongs to glasses technical field. The existing myopia spectacle lenses can not simultaneously correct asymmetric hyperopic defocus around the retina at the temporal side of the nose of the myopia and correct eye adjustment set dysfunction. The spectacle lens surface type is set into four areas of a nasal side treatment area, a temporal side treatment area, a central correction area and an adjustment set correction area, and four types of progressive multifocal adjustment type and aggregate type nasal-temporal side peripheral out-of-focus spectacle lenses, bifocal adjustment type and aggregate type nasal-temporal side peripheral out-of-focus spectacle lenses are set based on an eye adjustment set. The spectacle lens has the functions of simultaneously correcting the asymmetric hyperopic defocusing of the periphery of the temporal retina of a myopic eye, correcting the myopic eye adjusting and gathering dysfunction, and is suitable for being worn by children and teenagers with normal, inward or outward strabismus eye positions.
CN209803477U is a peripheral out of focus lens of nose temporal side based on eye adjusts set belongs to glasses technical field. The existing myopia spectacle lenses can not simultaneously correct asymmetric hyperopic defocus around the retina at the temporal side of the nose of the myopia and correct eye adjustment set dysfunction. The utility model discloses lens face type sets up to four regions in nasal side treatment area, temporal side treatment area, central correction district, regulation set correction district, sets up to four types of multifocal regulation type and the peripheral out of focus lens of set type nasal temporal side, bifocal regulation type and the peripheral out of focus lens of set type nasal temporal side gradually based on the eye is adjusted the set. The spectacle lens has the functions of simultaneously correcting the asymmetric hyperopic defocusing of the periphery of the temporal retina of a myopic eye, correcting the myopic eye adjusting and gathering dysfunction, and is suitable for being worn by children and teenagers with normal, inward or outward strabismus eye positions.
CN214474292U the utility model discloses an asymmetric peripheral myopia out of focus lens of two-sided composite design, including the lens body, the lens body comprises the lens front and the lens back, and the lens is openly for fixed out of focus standard asymmetric design, and the lens back is adjustable out of focus offset compensation value design, and the total out of focus of lens body is formed by the lens front and the stack of lens back two sides. The utility model has the advantages that: the thickness difference between the upper edge and the lower edge of the standard asymmetric periphery myopic out-of-focus lens is eliminated in a mode of a mold center positioning platform, meanwhile, due to the fact that the front surface of the lens shares a considerable out-of-focus compensation value, the needed free-form surface of the back surface of the lens and the processing difficulty are reduced, the asymmetric periphery myopic out-of-focus lens with the compensation value exceeding 1.50D still keeps the integral standard asymmetric out-of-focus design, the effect of reducing the periphery hypermetropia out-of-focus when a teenager myopic lens wearer reads in a short distance for a long time is facilitated, and a better myopia prevention and control effect is achieved.
CN213659117U the utility model discloses a prevention and defocus lens of short-sighted out of focus, including the picture frame, the embedded lens body that is equipped with of picture frame, the whole concavo-convex mirror that is of lens body, the lens body is by interior and outer central correction district, other center from the focus district and peripheral from the focus district of being equipped with in proper order, central correction district is located the central point of lens body and puts, peripheral out of focus position is in the edge of lens body, other central out of focus position is between central correction district and peripheral out of focus district, the asymmetric seven curvature rings that match in peripheral out of focus district has individual eyes back polar portion, the curvature ring includes the closed curvature ring of ring type with lens body central point diffusion. The out-of-focus lens for preventing and relieving myopia fundamentally solves the phenomenon of hyperopia out-of-focus at the periphery of the retina caused by the traditional optical glasses, and provides more comfortable, accurate and clear vision quality experience for children and teenagers with myopia patients.
CN215986774U the utility model discloses a two-sided compound multiple spot out of focus lens, including the lens body, the lens body is made with optical material of the same race, is formed by front surface and rear surface combination. The optical area of the lens body is divided into an intermediate refractive correction visual area, a peripheral defocus area and a peripheral refractive correction visual area, wherein the refractive powers of the intermediate refractive correction visual area, the peripheral defocus area and the peripheral refractive correction visual area are gradually changed from the center to the bottom. A plurality of circles of sub-lenses which are arranged in an elliptical ring shape and used for defocusing are arranged at the front surface position of the peripheral defocusing area, and the rear surface is a free curved surface; the refractive power of the intermediate refractive correction vision area is gradually reduced from top to bottom, and the refractive power of the peripheral out-of-focus area is gradually reduced from top to bottom. The utility model provides a ametropia of eyes is corrected to compound multiple spot out of focus lens of two-sided is effectual to can effectively restrain eyes ametropia's development function.
As can be seen from the above documents, at present, a plurality of areas are generally defined for the areas of the defocused lens, namely a central luminosity stable area, a side central defocused area and a peripheral defocused area, and the areas are not specifically sized, and meanwhile, the relationship between the defocused amounts of the areas is not given in the present patent. The defocus amount is a crucial parameter for relieving the myopia development of teenagers, the larger the area and the strength of the defocus amount are, the stronger the capacity of inhibiting the myopia development is, however, the higher the defocus amount is, the comfort of a wearer is reduced.
Disclosure of Invention
The invention aims to provide a method for manufacturing a differential defocusing increment resin lens with good defocusing amount processing effect.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for manufacturing a differential defocusing incremental resin lens comprises the following steps:
s1: injecting the resin raw material into a mould after preparation, and carrying out primary curing to obtain a semi-finished blank lens;
s2: carrying out partition processing on the semi-finished blank lens;
s3: and carrying out secondary curing on the semi-finished blank lens to obtain a finished blank lens, and edging and polishing the finished blank lens. The resin is cured for the first time and the second time, the partition processing is realized in the curing process, and the defocusing increment differentiation is improved, so that the defocusing amount effect of the processed lens is ensured.
In the above method for manufacturing a differential defocus incremental resin lens, step S1 includes the following steps:
s11: assembling the mold, detecting the cleanliness, injecting filler towards the interior of the mold, pressurizing, keeping the machining allowance, and heating for primary curing;
s12: and trimming the cured semi-finished blank lens, cleaning and drying. And during filling, pressurizing is carried out, and redundant air bubbles in the resin are removed, so that the processing quality of the resin is ensured.
In the manufacturing method of the differential defocusing incremental resin lens, resin is added during the processing of a semi-finished product blank, the central thickness of the semi-finished product blank is adjusted to control the refractive index to be 1.67+ and the Abbe number to be more than or equal to 30; or the refractive index is adjusted to 1.60+ and the Abbe number is more than or equal to 40; or the refractive index is adjusted to 1.55+ and the Abbe number is more than or equal to 38; alternatively, the refractive index is adjusted to 1.50+ and the Abbe number is not less than 56. The center thickness of the resin lens is adjusted according to the selection of a proper mould or resin material, so that the refractive index of the lens is adjusted.
In the above method for manufacturing a differential defocus incremental resin lens, step S2 includes the following steps:
s21: dividing a circular area by taking the geometric center point position of the lens as the center of the first refraction area, and processing the diopter of the first refraction area to be consistent with the diopter of the corrected vision of a wearer;
s22: and a second bending area, a third bending area, a fourth bending area and a fifth bending area are divided between the first bending area and the edge of the semi-finished blank lens, the second bending area is an elliptical area without the first bending area, the third bending area is an elliptical area without the first bending area and the second bending area, the fourth bending area is an elliptical area without the first bending area, the second bending area and the third bending area, the fifth bending area is an elliptical area without the first bending area, the second bending area, the third bending area and the fourth bending area, and the second bending area to the fifth bending area are processed to gradually increase the bending power. The lens is processed in a partitioning mode, and the defocusing area and the defocusing amount of the whole lens are maximized.
In the above method for manufacturing a differential defocus incremental resin lens, the radius of the first dioptric area is processed to 4 mm. The first dioptric area is left with sufficient light transmission area, and clear vision of a wearer is not affected.
In the manufacturing method of the differential defocus incremental resin lens, the long axis of the second refraction area is processed to be 6mm, the short axis of the second refraction area is processed to be 4.5mm, and the diopter of the second refraction area is adjusted to be 1.00-8.00D larger than that of the first refraction area. The diopter of the second diopter area is increased relative to the diopter of the first diopter area, and the defocusing amount is increased. The increase amplitude is usually 4.00D.
In the manufacturing method of the differential defocus incremental resin lens, the long axis of the third dioptric area is processed to 9mm and the short axis is processed to 6mm, and the dioptric value of the third dioptric area is adjusted to be 0.75-5.00D larger than that of the second dioptric area. The defocus amount in the third dioptric area is further increased, and the increase amplitude thereof is further decreased, and the increase amplitude is usually 3.00D.
In the method for manufacturing the differential defocus incremental resin lens, the long axis of the fourth refractive area is processed to 12mm and the short axis is processed to 9mm, and the diopter of the fourth refractive area is adjusted to be 0.5-3.00D larger than that of the third refractive area. The defocus amount in the fourth dioptric region increases, and the increase is again reduced, and the increase is typically 2.00D.
In the manufacturing method of the differential defocus incremental resin lens, the long axis of the fifth dioptric area is processed to be 18mm, the short axis of the fifth dioptric area is processed to be 13.5mm, and the dioptric value of the fifth dioptric area is adjusted to be 0.25-0.50D larger than that of the fourth dioptric area. The diopter of the fifth dioptric region is typically increased by 0.40D.
In the above method for manufacturing a differential defocus incremental resin lens, step S3 includes the following steps:
s31: filling the semi-finished blank lens into a mold, pressurizing and discharging air bubbles, and carrying out secondary curing by graded heating;
s32: performing edge grinding and polishing on the finished blank lens, performing quality detection and removing defective products;
s33: and (3) carrying out hardening treatment and film coating on the surface of the finished product blank lens, wherein the hardness of the surface of the finished product blank lens is not less than 3H, and the single-side reflectivity of the finished product blank lens is not more than 1.2% due to film coating.
Compared with the prior art, the invention has the advantages that: the lens is subjected to primary and secondary curing, and is processed in a partition manner in the curing process, so that the processing effect of defocusing amount differentiation is ensured; through demarcating the lens for central zone and first to fourth out of focus region, the clear vision of wearer can be ensured to the central zone, and the out of focus volume of first to fourth out of focus region progressively increases gradually, can design the travelling comfort that can ensure the wearer like this, and the out of focus area and the out of focus volume of whole lens also can realize the maximize simultaneously.
Drawings
FIG. 1 is a schematic diagram of the method of the present invention;
FIG. 2 is a schematic structural view of a lens body of the present invention;
in the figure, the lens body 1, the first dioptric light zone 11, the second dioptric light zone 12, the third dioptric light zone 13, the fourth dioptric light zone 14 and the fifth dioptric light zone 15.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1-2, a method for manufacturing a differential defocus incremental resin lens includes the following steps:
s1: injecting the resin raw material into a mould after preparation, and carrying out primary curing to obtain a semi-finished blank lens;
s2: carrying out partition processing on the semi-finished blank lens;
s3: and carrying out secondary curing on the semi-finished product blank lens to obtain a finished product blank lens, and carrying out edge grinding and polishing on the finished product blank lens.
Specifically, step S1 includes the steps of:
s11: assembling the mold, detecting the cleanliness, injecting filler towards the interior of the mold, pressurizing, keeping the machining allowance, and heating for primary curing;
s12: and trimming the cured semi-finished blank lens, cleaning and drying.
Deeply, adding resin during the processing of the semi-finished blank, adjusting the central thickness of the semi-finished blank to control the refractive index to be 1.67+ and the Abbe number to be more than or equal to 30; or the refractive index is adjusted to 1.60+ and the Abbe number is more than or equal to 40; or the refractive index is adjusted to 1.55+ and the Abbe number is more than or equal to 38; alternatively, the refractive index is adjusted to 1.50+ and the Abbe number is not less than 56. Typically, the refractive index of the lens body 1 is 1.60, the Abbe number is forty, and the diopter of the lens is-3.00D.
Further, step S2 includes the following steps:
s21: dividing a circular area by taking the geometric center point position of the lens as the center of the first refraction area 11, and processing the diopter of the first refraction area 11 to be consistent with the diopter of the corrected vision of a wearer;
s22: a second bending area 12, a third bending area 13, a fourth bending area 14 and a fifth bending area 15 are divided between the first bending area 11 and the edge of the semi-finished blank lens, the second bending area 12 is an elliptical area without the first bending area 11, the third bending area 13 is an elliptical area without the first bending area 11 and the second bending area 12, the fourth bending area 14 is an elliptical area without the first bending area 11, the second bending area 12 and the third bending area 13, the fifth bending area 15 is an elliptical area without the first bending area 11, the second bending area 12, the third bending area 13 and the fourth bending area 14, and the diopters of the second bending area 12 to the fifth bending area 15 are processed to be gradually increased.
Further, the radius of the first dioptric area 11 is processed to 4 mm. The actual diopter of the first diopter region 11 is-3.01D.
In addition, the major axis of the second dioptric region 12 is processed to 6mm and the minor axis is processed to 4.5mm, and the dioptric value of the second dioptric region 12 is adjusted to be larger than that of the first dioptric region 111.00-8.00D. The diopter of the second dioptric region 11 is increased by 3.01D, and its diopter is 0.00D.
Meanwhile, the long axis of the third dioptric area 13 is processed to 9mm and the short axis is processed to 6mm, and the diopter of the third dioptric area 13 is adjusted to be larger than the second dioptric area 120.75-5.00D.
The third dioptric zone 13 has an addition of 0.75D to 0.75D dioptre.
Visibly, the long axis of the fourth dioptric area 14 is processed to 12mm and the short axis is processed to 9mm, and the diopter of the fourth dioptric area 14 is adjusted to be larger than the third dioptric area 130.5-3.00D. The fourth dioptric zone 14 has an addition of 0.50D to 1.25D of dioptre.
It is clear that the major axis of the fifth dioptric zone 15 is machined to 18mm and the minor axis to 13.5mm, and the dioptric power of the fifth dioptric zone 15 is adjusted to be greater than that of the fourth dioptric zone 140.25-0.50D. The diopter of the fifth dioptric region 15 is increased by 0.25D, which is 1.50D.
Preferably, step S3 includes the steps of:
s31: filling the semi-finished blank lens into a mold, pressurizing and discharging air bubbles, and carrying out secondary curing by graded heating;
s32: performing edge grinding and polishing on the finished blank lens, performing quality detection and removing defective products;
s33: and (3) carrying out hardening treatment and film coating on the surface of the finished product blank lens, wherein the hardness of the surface of the finished product blank lens is not less than 3H, and the single-side reflectivity of the finished product blank lens is not more than 1.2% due to film coating. Intermittent filling is adopted during filling of the filler, so that the filler is compacted to reduce bubbles, the lens condensation quality is ensured by graded heating, and the internal stress is effectively eliminated.
Example two
The structure and principle of the present embodiment are similar to those of the present embodiment, and the difference is that the refractive index of the lens body 1 is 1.67, the abbe number is 30, and the diopter of the lens is-6.00D. The actual diopter of the test piece is-6.05D, the diopter of the first diopter area 11 is-6.05D, the diopter of the second diopter area 12 is-2.00D, the diopter of the third diopter area 13 is-1.25D, the diopter of the fourth diopter area 14 is-0.75D, and the diopter of the fifth diopter area 15 is-0.50D.
In summary, the principle of the present embodiment is: the lens divides the lens body 1 into a first bending area 11, a second bending area 12, a third bending area 13, a fourth bending area 14 and a fifth bending area 15 which are nested layer by layer between the first curing and the second curing, the processing mode ensures that the central area enables a wearer to obtain clear vision, and meanwhile, the bending area with gradually increased defocusing amount can ensure the comfort of the wearer.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms lens body 1, first dioptric light zone 11, second dioptric light zone 12, third dioptric light zone 13, fourth dioptric light zone 14, fifth dioptric light zone 15, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A method for manufacturing a differential defocusing incremental resin lens is characterized by comprising the following steps:
s1: injecting the resin raw material into a mould after preparation, and carrying out primary curing to obtain a semi-finished blank lens;
s2: carrying out partition processing on the semi-finished blank lens;
s3: and carrying out secondary curing on the semi-finished blank lens to obtain a finished blank lens, and edging and polishing the finished blank lens.
2. The method as claimed in claim 1, wherein the step S1 comprises the following steps:
s11: assembling the mold, detecting the cleanliness, injecting filler towards the interior of the mold, pressurizing, keeping the machining allowance, and heating for primary curing;
s12: and trimming the cured semi-finished blank lens, cleaning and drying.
3. The method for manufacturing the differential defocusing incremental resin lens according to claim 2, wherein the resin is added during the semi-finished blank processing, the center thickness of the semi-finished blank is adjusted to control the refractive index to be 1.67+ and the Abbe number to be not less than 30; or the refractive index is adjusted to 1.60+ and the Abbe number is more than or equal to 40; or the refractive index is adjusted to 1.55+ and the Abbe number is more than or equal to 38; alternatively, the refractive index is adjusted to 1.50+ and the Abbe number is not less than 56.
4. The method as claimed in claim 1, wherein the step S2 comprises the following steps:
s21: dividing a circular area by taking the geometric center point of the lens as the center of the first dioptre area (11), and processing the dioptre of the first dioptre area (11) to be consistent with the diopter of the corrected vision of a wearer;
s22: a second bending area (12), a third bending area (13), a fourth bending area (14) and a fifth bending area (15) are divided between the first bending area (11) and the edge of the semi-finished blank lens, the second bending area (12) is an elliptical area without the first bending area (11), the third bending area (13) is an elliptical area without the first bending area (11) and the second bending area (12), the fourth bending area (14) is an elliptical area without the first bending area (11), the second bending area (12) and the third bending area (13), the fifth bending area (15) is an elliptical area without the first bending area (11), the second bending area (12), the third bending area (13) and the fourth bending area (14), and the diopters of the second bending area (12) to the fifth bending area (15) are processed to be gradually increased.
5. The method for manufacturing the resin lens with the difference defocus increment as recited in claim 4, wherein the radius of the first refraction area (11) is processed to 4 mm.
6. The method for manufacturing a differentiated defocus incremental resin lens as recited in claim 5, wherein the long axis of the second dioptric area (12) is processed to 6mm and the short axis is processed to 4.5mm, and the dioptric power of the second dioptric area (12) is adjusted to be 1.00-8.00D larger than that of the first dioptric area (11).
7. The method for manufacturing the resin lens with the varied defocus increment according to claim 6, wherein the long axis of the third refraction area (13) is processed to 9mm and the short axis thereof is processed to 6mm, and the diopter of the third refraction area (13) is adjusted to be 0.75-5.00D larger than that of the second refraction area (12).
8. The method for manufacturing the resin lens with the varied defocus increment according to claim 7, wherein the long axis of the fourth refraction area (14) is processed to 12mm and the short axis is processed to 9mm, and the diopter of the fourth refraction area (14) is adjusted to be 0.5-3.00D larger than that of the third refraction area (13).
9. The method for manufacturing a differentiated defocus incremental resin lens as recited in claim 8, wherein the long axis of the fifth dioptric area (15) is processed to 18mm and the short axis thereof is processed to 13.5mm, and the dioptric power of the fifth dioptric area (15) is adjusted to be 0.25-0.50D larger than that of the fourth dioptric area (14).
10. The method as claimed in claim 1, wherein the step S3 comprises the following steps:
s31: filling the semi-finished blank lens into a mold, pressurizing and discharging air bubbles, and carrying out secondary curing by graded heating;
s32: performing edge grinding and polishing on the finished blank lens, performing quality detection and removing defective products;
s33: and (3) carrying out hardening treatment and film coating on the surface of the finished product blank lens, wherein the hardness of the surface of the finished product blank lens is not less than 3H, and the single-side reflectivity of the finished product blank lens is not more than 1.2% due to film coating.
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| CN202210472566.9A CN115071183A (en) | 2022-04-29 | 2022-04-29 | Method for manufacturing differentiated defocusing increment resin lens |
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| CN202210472566.9A CN115071183A (en) | 2022-04-29 | 2022-04-29 | Method for manufacturing differentiated defocusing increment resin lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201804169U (en) * | 2010-09-15 | 2011-04-20 | 段亚东 | Short-sight progressive defocus correcting glasses |
| CN110376758A (en) * | 2019-08-02 | 2019-10-25 | 上海伟星光学有限公司 | A kind of new excellent manufacturing method for learning PRO multifocal polyurethane eyeglass |
| CN113352660A (en) * | 2021-05-14 | 2021-09-07 | 明月镜片股份有限公司 | Preparation method of defocused lens |
| CN113433717A (en) * | 2021-07-15 | 2021-09-24 | 段亚东 | Individualized diffraction slope ring-shaped peripheral out-of-focus spectacle lens |
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2022
- 2022-04-29 CN CN202210472566.9A patent/CN115071183A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804169U (en) * | 2010-09-15 | 2011-04-20 | 段亚东 | Short-sight progressive defocus correcting glasses |
| CN110376758A (en) * | 2019-08-02 | 2019-10-25 | 上海伟星光学有限公司 | A kind of new excellent manufacturing method for learning PRO multifocal polyurethane eyeglass |
| CN113352660A (en) * | 2021-05-14 | 2021-09-07 | 明月镜片股份有限公司 | Preparation method of defocused lens |
| CN113433717A (en) * | 2021-07-15 | 2021-09-24 | 段亚东 | Individualized diffraction slope ring-shaped peripheral out-of-focus spectacle lens |
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Address after: South side of Railway Avenue, Shanxiatan Village, Shaojiadu Street, Linhai City, Taizhou City, Zhejiang Province, 317006 Applicant after: Zhejiang Weixing Optics Co.,Ltd. Address before: South side of Railway Avenue, Shanxiatan Village, Shaojiadu Street, Linhai City, Taizhou City, Zhejiang Province, 317006 Applicant before: ZHEJIANG WEIXING OPTICAL Co.,Ltd. |