CN114755844A - Film patch with wave-shaped structure in pair-ring multi-focus single ring and preparation method thereof - Google Patents

Abstract

The invention discloses a film patch with a wave-shaped structure in a multi-ring multi-focus single ring and a preparation method thereof. The invention can make the conventional spectacle lens have a plurality of different focal lengths, and different diopters in different circular rings can enhance the adaptability of human eyes and inhibit the abnormal development of diopters. The visual field of the wearer is clearer, and the economic cost for replacing the spectacle lens of the wearer and the production and manufacturing cost of enterprises are saved.

Description

A thin film patch with a wavy structure in a multi-focus single ring of a pair of rings and a preparation method thereof

technical field

The invention relates to the technical field of spectacle lenses, in particular to a film patch with a wavy structure in a multi-focus single ring of a pair of rings and a preparation method thereof.

Background technique

Due to the use of the eye for too long or too close to the eye, the ciliary body of the eye is overburdened and in a state of tension for a long time. Over time, the muscles of the eye are in a state of spasm, causing things to be imaged in front of the retina and forming myopia. After short-sightedness, it is necessary to wear myopia lenses to correct the refractive error. Although wearing conventional myopia lenses can make the eyes see things clearly, the near power of the eyes will still deepen after a long time. After the eye degree is deepened, the diopter of the eye is deviated from the diopter of the spectacle lens worn, and the spectacle lens needs to be replaced to correct the diopter of the eye. In order to suppress the development of refractive errors, functional lenses have appeared, which are prepared on conventional spectacle lenses to provide microstructures of multiple focal length regions, and provide different refractive powers from the main lens, so as to suppress the development of refractive errors. Most of such lenses on the market are directly prepared with microstructures on spectacle lenses. When the wearer needs to replace the spectacle lens, the original lens will be scrapped, which will not only cause a waste of resources, but also increase the manufacturing cost and consumption cost. To this end, thin-film patches with microstructures have appeared, which can be directly attached to the wearer's original spectacle lenses to save resources and economic costs.

SUMMARY OF THE INVENTION

Purpose of the invention: The purpose of the present invention is to provide a multi-focal length film patch that can correct refractive errors of spectacle lenses and inhibit the development of refractive errors of eyes.

Technical scheme: the present invention comprises the following steps:

Step 1: According to the actual design parameters, prepare a structural surface and a curved mold with a snap device and a reserved gap

Step 2: Combine the structural surface and the curved mold to obtain a film patch mold with a gap;

Step 3: Fill the mold described in Step 2 with resin to seal the gap;

Step 4: after the resin in the mold is cured, separate the curved mold to obtain the film patch cured in the structural surface mold;

Step 5: Spray glue on the film patch obtained in Step 4 to prepare an adhesive layer, and cover the adhesive layer with a protective film;

Step 6: demoulding the film patch to obtain a film patch with a wave structure in a multi-ring, multi-focus single ring;

Step 7: Align the center point of the spectacle lens to be corrected with the center point of the wave mask patch, cut off the excess patch according to the outline of the eye lens, tear off the protective film layer, and stick the film patch on the spectacle lens.

The first surface of the patch is a structural surface, and the second surface is an adhesive surface; the first surface includes a common correction visual area and a wavy structure area, and the common correction visual area surrounds the wavy structure area; the wave The shape structure area includes a plurality of concentric rings, and the rings all adopt a wavy structure.

The diopter of the normal corrected visual area of the film patch is -1.5~1.5D, and the diopter of the wavy structure corrected visual area is -3~3D.

The diopter deviation between adjacent rings in the wavy structure area is -1 to 1D.

The total thickness of the film patch is 1~3mm, the shape is a circle, the radius is 25~50mm, the thickness of the first surface from the second surface is 0.5~1.5mm, and the curvature radius of the second surface is the curvature of the attached lens. 1 to 2 times the radius.

In the wavy structure, the number of concentric rings is 5-30, the interval width between adjacent rings is equal, the interval width is 1-3 mm, and the radius of the smallest ring in the concentric rings is 1-5 mm.

The wave-shaped structure area has 2-5 different peak heights, and the peak heights between adjacent rings change continuously. The minimum peak height in the wave-shaped structure area is 0.05-0.3mm, and the maximum peak height is 0.5~1mm; the peak height deviation between adjacent rings is 0.05~0.2mm.

The peak height of the wave-shaped structure region starts from the innermost ring, increases from the smallest to the largest, and then decreases to the smallest, and the cycle is repeated in sequence.

The shape of the notch in the step 1 is a square, and the side length is 1-2 mm.

The method for preparing the mold in step 1 includes, but is not limited to, laser rapid prototyping technology, thermal compression technology, moldless multi-point forming technology, and resin mold stamping technology.

Beneficial effects: the patch of the present invention has multiple focal areas, so that conventional spectacle lenses can have multiple different focal lengths, and different peak heights in different rings can make the spectacle lenses have multiple diopters, so as to enhance the adaptability of the human eye, Suppresses the abnormal development of diopter. When the diopter of the wearer is inconsistent with the diopter of the spectacle lens, the patch of the present invention not only corrects the diopter of the spectacle lens, but also optimizes the aberration of the whole lens, so that the wearer's field of vision is clearer, and at the same time, it saves the wearer's time to replace the spectacle lens. The economic cost and the production cost of the enterprise.

Description of drawings

Fig. 1 The flow chart of preparation of thin film patch with wavy structure.

Figure 2 Schematic diagram of the structure of equally spaced concentric rings.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

As shown in FIG. 1, the present invention includes a film patch body 15, the total thickness of the film patch is 1-3 mm, the shape of the film patch is a circle, and the radius is 25-50 mm; the first surface of the patch is a structural surface, The structure surface includes a normal correction visual area 17 and a wave-shaped structure area 16, the normal correction visual area 17 has a diopter range of -1.5~1.5D, and the wave-shaped structure area 16 has a diopter range of -3~3D. The common correction visual area 17 surrounds the wave-shaped structure area 16; the wave-shaped structure area 16 is composed of a plurality of concentric rings 21, and each ring adopts a wave-shaped structure; the diopter between adjacent ring-shaped wave-shaped structures The deviation is -1~1D, the radius of the smallest circle in the concentric rings is 1~5mm; the interval between adjacent rings is equal, the interval width is 1mm~3mm, and the number of concentric rings is 5~30; the peak height of different rings Differently, the wavy structure area 16 has 2~5 different peak heights, the minimum peak height is 0.05~0.3mm, the maximum peak height is 0.5~1mm, and the peak height deviation of adjacent rings is 0.05~0.2mm ; In the concentric rings 21, the peak height of the wavy structure starts from the innermost ring, increases from the smallest to the largest, and then decreases to the smallest, and circulates in turn.

The second surface is an adhesive surface, the thickness of the first surface from the second surface is 0.5~1.5mm, and the curvature radius of the second surface of the film patch is 1~2 times that of the attached lens;

The preparation method of the film patch is as follows:

Step 1: According to the actual design parameters, prepare the structural surface mold 11 and the curved surface mold 12 with the snap device 18 and the reserved gap;

Step 2: combining the structural surface and the curved mold to obtain a film patch mold 13 with a gap 14;

Step 3: Fill the mold described in Step 2 with resin to seal the gap 14;

Step 4: After the resin in the mold is cured, separate the curved mold 12 to obtain the film patch cured in the structural surface mold 11;

Step 5: Spray glue on the film patch obtained in Step 4 to prepare an adhesive layer, and cover the adhesive layer with a protective film

Step 6: Demoulding the patch to obtain a film patch 15 with a wave structure in a multi-ring, multi-focus and single-ring.

Step 7: Align the center point of the spectacle lens to be corrected with the center point of the wave mask patch 15, cut off the excess patch according to the outline of the eye lens, tear off the protective film layer, and stick the film patch 15 on the spectacle lens.

The methods for preparing the mold in the above steps include, but are not limited to, laser rapid prototyping technology, thermal compression technology, moldless multi-point forming technology, and resin mold stamping technology.

The patch of the present invention has multiple focal areas, so that the conventional spectacle lenses can have multiple different focal lengths, and the different peak heights in different rings can make the spectacle lenses have multiple diopters, so as to enhance the adaptability of the human eye and suppress the variation of the diopter. abnormal development. When the diopter of the wearer is inconsistent with the diopter of the spectacle lens, the patch of the present invention not only corrects the diopter of the spectacle lens, but also optimizes the aberration of the whole lens, so that the wearer's field of vision is clearer, and at the same time, it saves the wearer's time to replace the spectacle lens. The economic cost and the production cost of the enterprise.

Example

The present embodiment utilizes resin die stamping technology to prepare die, and the concrete steps are:

Step 1: According to the actual design parameters, use the resin die stamping technology to prepare the structural surface die 11 and the curved surface die 12 with the snap device 18 and the reserved gap;

Step 2: combining the structural surface and the curved mold to obtain a film patch mold 13 with a gap 14;

Step 3: Fill the mold described in Step 2 with resin to seal the gap 14;

Step 4: After the resin in the mold is cured, separate the curved mold 12 to obtain the film patch cured in the structural surface mold 11;

Step 5: Spray glue on the film patch obtained in Step 4 to prepare an adhesive layer, and cover the adhesive layer with a protective film;

Step 6: demoulding the patch to obtain a film patch 15 with a wave structure in a multi-ring, multi-focus single ring;

Step 7: Align the center point of the spectacle lens to be corrected with the center point of the wave mask patch 15, cut off the excess patch according to the outline of the eye lens, tear off the protective film layer, and stick the film patch 15 on the spectacle lens.

In this embodiment, the total thickness of the thin film patch 15 is 1.5mm, and the radius is 25mm; as shown in FIG. 2 , the number of concentric rings 21 is 6, the radius of the smallest ring is 3mm, and between adjacent rings The interval is 3mm; the diopter deviation of the wave-shaped structure between adjacent rings is 0.5D, and the diopter of the wave-shaped structure area 16 is 3D; there are 3 peak heights in the wave-shaped structure area 16, and the peak height starts from the innermost ring Increase from the smallest to the largest, this is a cycle; in one cycle, the minimum peak height is 0.05mm, and the peak height of the wave-shaped structure between adjacent rings differs by 0.1mm; the distance between the first surface and the second surface is 1.3 mm; the diopter of the common correction area 17 is 1.5D; the curvature radius of the film patch is 1.5 times that of the attached spectacle lens.

Claims (10)

1. a film patch and a preparation method with a wavy structure in a multi-ring multi-focus single-ring, it is characterized in that, the preparation method of described film patch comprises the following steps: Step 1: According to the actual design parameters, prepare a structural surface and a curved mold with a buckle device and a reserved gap; Step 2: Combine the structural surface and the curved mold to obtain a film patch mold with a gap; Step 3: Fill the mold described in Step 2 with resin to seal the gap; Step 4: after the resin in the mold is cured, separate the curved mold to obtain the film patch cured in the structural surface mold; Step 5: Spray glue on the film patch obtained in Step 4 to prepare an adhesive layer, and cover the adhesive layer with a protective film; Step 6: demoulding the film patch to obtain a film patch with a wave structure in a multi-ring, multi-focus single ring; Step 7: Align the center point of the spectacle lens to be corrected with the center point of the wave mask patch, cut off the excess patch according to the outline of the eye lens, tear off the protective film layer, and stick the film patch on the spectacle lens. 2. A film patch with a wavy structure in a multi-ring multi-focus single ring and a preparation method, characterized in that, comprising a film patch main body, the first surface of the patch is a structural surface, and the second surface is an adhesive The first surface includes a common correction viewing area and a wave-shaped structure area, and the common correction viewing area surrounds the wave-shaped structure area; the wave-shaped structure area includes a plurality of concentric rings, and the rings are all wavy shape structure. 3. The film patch with a wavy structure in a multi-ring, multi-focus single-ring according to claim 1, and its preparation method, wherein the diopter of the normal correction visual area of the film patch is -1.5 ~1.5D, the diopter of the wavy structure corrected visual area is -3~3D. 4. The film patch with a wavy structure in a multi-ring and multi-focus according to claim 1 and a preparation method, wherein the diopter deviation between adjacent rings in the wavy structure area is- 1~1D. 5. The film patch having a wavy structure in a multi-ring, multi-focus single-ring according to claim 1 and a preparation method, wherein the total thickness of the film patch is 1～3mm, and the shape is a circle shape, the radius is 25~50mm, the thickness between the first surface and the second surface is 0.5~1.5mm, and the curvature radius of the second surface is 1~2 times the curvature radius of the attached lens. 6. The film patch with a wavy structure in a multi-ring and multi-focus according to claim 1, and the preparation method, wherein, in the wavy structure, the number of concentric rings is 5-30, and the The interval width between adjacent rings is equal, the interval width is 1~3mm, and the radius of the smallest ring among the concentric rings is 1~5mm. 7. The film patch having a wavy structure in a multi-ring and multi-focus according to claim 1 and the preparation method, wherein the wavy structure area has 2 to 5 different peak heights, and the The peak height between adjacent rings changes continuously, the minimum peak height in the wavy structure area is 0.05~0.3mm, and the maximum peak height is 0.5~1mm; the peak height deviation between adjacent rings is 0.05~0.2 mm. 8 . The film patch with a wavy structure in a multi-ring and multi-focus according to claim 1 , and the preparation method, wherein the peak height of the wavy structure region, starting from the innermost ring, has the smallest Increase to the maximum, then decrease to the minimum, and so on. 9 . The multi-ring and multi-focus film patch with a wavy structure and a preparation method according to claim 1 , wherein the shape of the notch in the step 1 is a square, and the side length is 1-2 mm. 10 . 10. The film patch with wavy structure in a kind of multi-ring and multi-focus according to claim 1 and its preparation method, it is characterized in that, the method for preparing mould in described step 1 includes but is not limited to laser rapid prototyping technology, Hot compression technology, moldless multi-point forming technology, resin die stamping technology.

Images