Multi-point defocus eyeglass lens patch and pasting method thereof

Abstract

The present invention provides a multi-point defocus spectacle lens patch, comprising a patch body, the patch body comprising a first surface and a second surface, the first surface comprising a visible area, a multi-point defocus area, a positioning plane, and a geometric center, the geometric center being located at the center of the first surface, the visible area covering the geometric center, the multi-point defocus area surrounding the outside of the visible area, and the positioning plane surrounding the outside of the multi-point defocus area. The present invention has the effect of inhibiting axial growth of the eye, thereby alleviating the progression of myopia.

Description

Technical Field

[0001] The present invention relates to the technical field of myopia spectacle lenses, and in particular to a multi-point defocus spectacle lens patch and a pasting method thereof. Background Art

[0002] Research on the progression of myopia has shown that abnormal axial growth of the eyeball is one of the main factors that induce the progression of myopia. This is manifested in that after the image passes through the refractive correction lens, the central image appears on the fovea of ​​the retina, and the peripheral images appear behind the retina (i.e., hyperopic defocus state). After the peripheral images are imaged on the retina for a long time, the child's physical development function will force the peripheral images to be imaged on the retina, causing further growth of the eye axis and thus further deepening of myopia.

[0003] For frame glasses, according to the "Myopia Management White Paper" (2019), wearing multi-point myopia defocus frame glasses can delay the axial length of myopia by an average of 0.16mm / year, and the degree of myopia can be delayed by an average of 0.28D / year, which is effective in controlling vision.

[0004] The published invention patent 201910710155.7 is a multi-point defocus design made on the front surface of the lens. Its manufacturing process is to use a single-point diamond lathe to process the multi-point defocus design surface on the surface of the metal mold, and then use hot pressing equipment to hot press the design surface of the metal mold on the surface of the glass mold, and then use the glass mold to cast the resin lens. The process is complicated and the manufacturing cost is high. Moreover, after the consumer wears the lens, once the optical focal length of the consumer's eyes changes, the multi-point defocus lens will be scrapped and replaced with a new multi-point defocus lens.

[0005] Furthermore, for children, the optical focal length of the 3.0 to 3.5D defocus area commonly used in the prior art can cause great discomfort to them.

[0006] Therefore, it is necessary to provide a new technical solution. Summary of the Invention

[0007] In order to solve the technical problems existing in the prior art, the present invention discloses a multi-point defocus eyeglass lens patch, and the specific technical solution is as follows:

[0008] The present invention provides a multi-point defocus spectacle lens patch, which includes a patch body, wherein the patch body includes a first surface and a second surface, wherein the first surface and the second surface are both curved surfaces.

[0009] The first surface includes a viewing area, a multi-point defocus area, a positioning plane and a geometric center,

[0010] The geometric center is located at the center of the first surface, the visible area covers the geometric center, the multi-point defocus area is surrounded by the outside of the visible area, and the positioning plane is surrounded by the outside of the multi-point defocus area.

[0011] Furthermore, the first surface is parallel to the second surface.

[0012] The visible area includes a horizontal length of 8 to 12 mm and a vertical length of 10 to 16 mm;

[0013] The outer edge of the multi-point defocus area is circular, and a plurality of convex micro lenses are arranged at intervals within the multi-point defocus area;

[0014] A circular angle scale is provided on the positioning plane, and the angle scale surrounds the outside of the multi-point defocus area.

[0015] Furthermore, the visible area is circular.

[0016] The center of the visible area coincides with the geometric center,

[0017] The optical power of the visible area is 0D.

[0018] Furthermore, the visible area is in the shape of a vertical or inclined strip.

[0019] The center of the visible area is located 0 to 3 mm below the geometric center along the strip direction.

[0020] The optical power of the visible area is 0D.

[0021] Furthermore, when the visible area is in an inclined strip shape, the inclined angle between the visible area and the vertical direction is 10°.

[0022] Furthermore, the bottoms of the visual areas on the left and right eye lenses are both tilted inwards to form an inverted figure eight shape.

[0023] Furthermore, the area of ​​a single convex microlens in the multi-point defocus area is 2 to 5 square millimeters;

[0024] The distance between the edges of adjacent convex microlenses is 0.1 to 1 mm;

[0025] The vertex optical power of the convex microlens in the multi-point defocus area ranges from +1.50 to +4.00D, and increases from the inner side to the outer side of the multi-point defocus area.

[0026] Furthermore, the second surface is a spherical surface, and the curvature of the second surface includes four options: -0.50D, -1.50D, -2.50D, and -3.50D. According to the spectacle lens matching table, the optical focal length ranges corresponding to the meridian direction of the spectacle lenses are shown in the following table:

[0027] Patch curvature The optical power range of the lens corresponding to the meridian direction -0.50D ≥-4.75D -1.50D -2.75D~-4.50D -2.50D -1.25D~-2.50D -3.50D 0.00D~-1.00D .

[0028] Furthermore, the thickness of the patch body is 0.1 to 0.8 mm, and the thickness of the convex microlens is 0.1 to 4 μm.

[0029] The present invention also provides a method for pasting a multi-point defocus lens patch.

[0030] When the visible area is in the shape of a circle or a vertical bar, the process includes the following steps:

[0031] a. Select the lens patch with the corresponding curvature according to the optical power of the lens in the meridian direction;

[0032] b. First, use the Nidec vertex diopter to measure the optical center of the lens and mark the horizontal reference point of the optical center in the axial direction;

[0033] c. Drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, so that the horizontal reference line in the axial direction coincides with the 0° and 180° scale lines on the patch;

[0034] d. After the patch body is attached to the lens, press it with your hands to squeeze out the water between the lens and the patch body;

[0035] e. According to the size of the lens, cut off the excess part of the patch body;

[0036] f. Install the attached lenses on the glasses frame.

[0037] When the visible area is in the shape of a bar with the bottom tilted inward, the following steps are included:

[0038] a. Select the lens patch with the corresponding curvature according to the optical power of the lens in the meridian direction;

[0039] b. First, use the Nidec vertex focal meter to measure the optical center of the left and right eye lenses respectively, and mark the horizontal reference point of the optical center in the axial direction for use;

[0040] c. Left eye spectacle lens scale mark: Take a vertical strip of spectacle lens and use a marker to draw dotted lines on the 10° and 190° scales on the patch and set aside;

[0041] d. Marking the scale on the right eye lens: Take a vertical strip of eyeglass lens and use a marker to draw dotted lines on the 170° and 350° scales on the lens for later use.

[0042] e. Take the marked left eye lens and left eye lens patch, drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, rotate the lens so that the horizontal reference line of the lens coincides with the dotted lines of the 10° and 190° scale directions of the patch, and press with your hand to squeeze out the water between the lens and the patch body;

[0043] f. Take the marked right eye lens and the right eye lens patch, drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, rotate the lens so that the horizontal reference line of the lens coincides with the dotted lines of the 170° and 350° scale directions of the patch, and press with your hand to squeeze out the water between the lens and the patch body;

[0044] g. According to the size of the glasses lens, cut off the excess part of the left and right eye glasses lens body respectively; h. Install the left and right eye glasses lens respectively on the glasses frame.

[0045] The present invention has the following beneficial effects:

[0046] 1. The multi-point defocus spectacle lens patch provided by the present invention has the effect of inhibiting the axial growth of the eye, thereby alleviating the worsening of myopia.

[0047] 2. The multi-point defocus spectacle lens patch provided by the present invention has a longer longitudinal visual area, which increases the visual distance when the eyeball looks downward.

[0048] 3. The multi-point defocus eyeglass lens provided by the present invention has a defocus area that increases from the inside to the outside, has higher adaptability, provides a transition for children's eyes, and prevents the high optical power near the visual area from causing discomfort to children.

[0049] 4. The multi-point defocus eyeglass lens patch provided by the present invention can be reused, thereby reducing the cost for consumers.

[0050] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0052] Figure 1 This is a side structural diagram of a multi-point defocus eyeglass lens patch provided by an embodiment of the present invention.

[0053] Figure 2 yes Figure 1 Schematic diagram of the front structure.

[0054] Figure 3 yes Figure 2 Schematic diagram of the tilt angle of the middle viewing area.

[0055] Figure 4 It is a schematic diagram of the combination of the patch body and the eyeglass lens when the visible area of ​​the present invention is circular.

[0056] Figure 5 It is a schematic diagram of the combination of the patch body and the eyeglass lens when the visible area of ​​the present invention is a vertical strip.

[0057] Figure 6 It is a schematic diagram of the combination of the left-eye patch body and the left-eye lens when the visual area of ​​the present invention is an inclined strip.

[0058] Figure 7 It is a schematic diagram of the combination of the right eye patch body and the right eye lens when the visual area of ​​the present invention is an inclined strip.

[0059] Among them, 1-patch body; 2-first surface; 3-second surface; 4-visible area; 5-multi-point defocus area; 6-positioning plane; 7-geometric center. DETAILED DESCRIPTION

[0060] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0061] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0062] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] The present invention provides a multi-point defocus eyeglass patch, referring to Figures 1 to 4 The patch body 1 includes a first surface 2 and a second surface 3, both of which are curved surfaces. The first surface 2 includes a visible area 4, a multi-point defocus area 5, a positioning plane 6, and a geometric center 7. The geometric center 7 is located at the center of the first surface 2, the visible area 4 covers the geometric center 7, the multi-point defocus area 5 surrounds the outside of the visible area 4, and the positioning plane 6 surrounds the outside of the multi-point defocus area 5.

[0064] In one embodiment, the first surface 2 is parallel to the second surface 3. The viewing area 4 has a horizontal length of 8 to 12 mm and a vertical length of 10 to 16 mm. The outer edge of the multi-point defocus area 5 is circular, and a plurality of convex microlenses are spaced apart within the multi-point defocus area 5. The positioning plane 6 is provided with a circular angle scale, which surrounds the outside of the multi-point defocus area 5.

[0065] In one embodiment, the visible area 4 is circular, the center of the visible area 4 coincides with the geometric center 7, and the optical focal length of the visible area 4 is 0D.

[0066] In another embodiment, the visible area 4 is in a vertical or inclined strip shape, the center of the visible area 4 is located 0 to 3 mm below the geometric center 7 along the strip direction, and the optical focal length of the visible area 4 is 0D.

[0067] When the visual area 4 is in an inclined strip shape, the angle between the visual area 4 and the vertical direction is 10 degrees. The bottoms of the visual areas 4 on both the left and right eye lenses are inclined inwards, forming an inverted figure eight shape.

[0068] In one embodiment, the area of ​​a single convex microlens within the multi-point defocus region 5 is 2 to 5 square millimeters. The edge spacing between adjacent convex microlenses is 0.1 to 1 millimeter. The vertex optical power of the convex microlenses within the multi-point defocus region 5 is +1.50 to +4.00 D, and increases from the inside to the outside of the multi-point defocus region 5.

[0069] In one embodiment, when the second surface 3 is a spherical surface, the curvature of the second surface 3 includes four options: -0.50D, -1.50D, -2.50D, and -3.50D. According to the spectacle lens matching table, the corresponding optical focal length ranges in the meridian direction of the spectacle lenses are shown in the following table:

[0070]

[0071]

[0072] In one embodiment, the thickness of the patch body 1 is 0.1 to 0.8 mm, and the thickness of the convex microlens is 0.1 to 4 μm.

[0073] The present invention also provides a method for pasting a multi-point defocus lens patch.

[0074] When the visible area is in the shape of a circle or a vertical bar, the process includes the following steps:

[0075] a. Select the lens patch with the corresponding curvature according to the optical power of the lens in the meridian direction;

[0076] b. First, use the Nidec vertex diopter to measure the optical center of the lens and mark the horizontal reference point of the optical center in the axial direction;

[0077] c. Drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, so that the horizontal reference line in the axial direction coincides with the 0° and 180° scale lines on the patch;

[0078] d. After the patch body is attached to the lens, press it with your hands to squeeze out the water between the lens and the patch body;

[0079] e. According to the size of the lens, cut off the excess part of the patch body;

[0080] f. Install the attached lenses on the glasses frame.

[0081] When the visible area is in the shape of a bar with an inward tilt at the bottom, refer to Figures 5 to 7 , including the following steps:

[0082] a. Select the lens patch with the corresponding curvature according to the optical power of the lens in the meridian direction;

[0083] b. First, use the Nidec vertex focal meter to measure the optical center of the left and right eye lenses respectively, and mark the horizontal reference point of the optical center in the axial direction for use;

[0084] c. Left eye spectacle lens scale mark: Take a vertical strip of spectacle lens and use a marker to draw dotted lines on the 10° and 190° scales on the patch and set aside;

[0085] d. Marking the scale on the right eye lens: Take a vertical strip of eyeglass lens and use a marker to draw dotted lines on the 170° and 350° scales on the lens for later use.

[0086] e. Take the marked left eye lens and left eye lens patch, drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, rotate the lens so that the horizontal reference line of the lens coincides with the dotted lines of the 10° and 190° scale directions of the patch, and press with your hand to squeeze out the water between the lens and the patch body;

[0087] f. Take the marked right eye lens and the right eye lens patch, drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, rotate the lens so that the horizontal reference line of the lens coincides with the dotted lines of the 170° and 350° scale directions of the patch, and press with your hand to squeeze out the water between the lens and the patch body;

[0088] g. According to the size of the glasses, cut off the excess parts of the left and right eye patches respectively;

[0089] h. Install the left and right eye lenses on the glasses frames respectively.

[0090] Example 1: Taking a pair of spectacle lenses with spherical front and back surfaces as an example, assuming that the center focal power Yd of the spectacle lens is -3.00D, according to the optical power range table of the spectacle lens in the meridian direction, a corresponding -2.50D multi-point defocus spectacle lens patch is selected, and a Nidek vertex focal meter is used to measure the optical center of the spectacle lens and mark it. A few drops of tap water are dripped on the front of the spectacle lens, and the second side of the multi-point defocus patch is facing the front of the spectacle lens and the geometric center of the patch is aligned with the optical center of the spectacle lens. After the patch is attached to the spectacle lens, the water between the patch and the spectacle lens is squeezed out by hand. The optical power of the visible area is zero degrees, and the optical power of the visible area Td is set to 0.00. The vertex optical power (LD) of the Fresnel microlens in the multi-point defocus area is set to +3.00D. Then, the optical power (D) of the visible area of ​​the spectacle lens after the patch is attached is:

[0091] (D)=Yd-Td

[0092] =-3.00-0.00

[0093] =-3.00

[0094] The optical power of the defocused area of ​​the eyeglass lens (D2) = Yd + D2

[0095] =-3.00+(+3.00)

[0096] =0.00D,

[0097] Therefore, after the multi-point defocus patch is attached to the lens, the optical focal length in the visual area remains the same as that of the original lens, but a +3.00D defocus area is formed outside the visual area. According to the clinical report of "Peripheral Refractive Study of Myopic Children After Wearing Single Vision Lenses", the peripheral hyperopic defocus amount (RPRE) of the naked eye is 1.27±0.78D, so after the patch is attached to the lens, the peripheral optical focal length forms a +3.00 optical focal length change. Therefore, the lens has the function of paracentral defocus, which can inhibit the axial growth of the eye, thereby alleviating the deepening of myopia.

[0098] In Example 2, a pair of already trimmed and framed lenses is used as an example. The visible area on the lenses is circular. The lenses are removed from the frames, and the optical center of the lenses is measured and marked using a Nidek vertex diopter. Tap water is dripped onto the front of the lenses, and the geometric center of the patch is aligned with the optical center of the lenses. After the patch is attached to the lenses, the water between the patch and the lenses is squeezed out by hand, and the excess patch outside the lenses is cut off with scissors. The lenses now have a paracenter defocus function. This patch can not only be attached to already trimmed lenses, but also can be removed from discarded lenses with attached multi-point defocus patches. Since this multi-point defocus patch is made of flexible plastic, it can still be attached to another pair of lenses without corrosion or deliberate damage, thus achieving a reuse function and reducing consumer procurement costs.

[0099] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0100] Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention, and that those skilled in the art may make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-point defocus eyeglass lens patch, characterized by: The patch body (1) includes a first surface (2) and a second surface (3), wherein the first surface (2) and the second surface (3) are both curved surfaces. The first surface (2) includes a viewing area (4), a multi-point defocus area (5), a positioning plane (6) and a geometric center (7), The geometric center (7) is located at the center of the first surface (2), the visible area (4) covers the geometric center (7), the multi-point defocus area (5) is surrounded outside the visible area (4), and the positioning plane (6) is surrounded outside the multi-point defocus area (5). The first surface (2) is parallel to the second surface (3), The visible area (4) comprises a transverse length of 8 to 12 mm and a longitudinal length of 10 to 16 mm; The outer edge of the multi-point defocus area (5) is circular, and a plurality of convex micro lenses are arranged at intervals within the multi-point defocus area (5); A circular angle scale is provided on the positioning plane (6), and the angle scale surrounds the outside of the multi-point defocus area (5). The visible area (4) is in the shape of a vertical or inclined strip, The center of the visible area (4) is located 0 to 3 mm below the geometric center (7) along the strip direction. The optical power of the visual area (4) is 0D, When the visible area (4) is in an inclined strip shape, the angle of inclination between the visible area (4) and the vertical direction is 10°.

2. The multi-point defocus eyeglass lens according to claim 1, characterized in that: The bottoms of the visual areas (4) on the left and right eye lenses are both tilted inwards to form an inverted eight-shaped shape.

3. The multi-point defocus eyeglass lens patch according to claim 1, characterized in that: The area of ​​a single convex microlens in the multi-point defocus area (5) is 2 to 5 square millimeters; The distance between the edges of adjacent convex microlenses is 0.1 to 1 mm; The vertex optical power of the convex microlens in the multi-point defocus area (5) ranges from +1.50 to +4.00D, and increases uniformly from the inside to the outside of the multi-point defocus area (5).

4. The multi-point defocus eyeglass lens according to claim 1, characterized in that: The second surface (3) is a spherical surface, and the curvature of the second surface (3) includes four options: -0.50D, -1.50D, -2.50D and -3.50D. According to the spectacle lens matching table, the optical focal length ranges corresponding to the meridian direction of the spectacle lenses are shown in the following table: 。 5. The multi-point defocus eyeglass lens according to claim 1, characterized in that: The thickness of the patch body (1) is 0.1 to 0.8 millimeters, and the thickness of the convex microlens is 0.1 to 4 micrometers.

6. A method for pasting a multi-point defocus eyeglass lens patch, using the multi-point defocus eyeglass lens patch according to any one of claims 1 to 5, characterized in that: When the visible area is in the shape of a circle or a vertical bar, the process includes the following steps: a. Select the lens patch with the corresponding curvature according to the optical power of the lens in the meridian direction; b. First, use the Nidec vertex diopter to measure the optical center of the lens and mark the horizontal reference point of the optical center in the axial direction; c. Drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, so that the horizontal reference line in the axial direction coincides with the 0° and 180° scale lines on the patch; d. After the patch body is attached to the lens, press it with your hands to squeeze out the water between the lens and the patch body; e. According to the size of the lens, cut off the excess part of the patch body; f. Install the pasted lenses on the glasses frame, When the visible area is in the shape of a bar with its bottom tilted inward, the process includes the following steps: a. Select the lens patch with the corresponding curvature according to the optical power of the lens in the meridian direction; b. First, use the Nidec vertex focal meter to measure the optical center of the left and right eye lenses respectively, and mark the horizontal reference point of the optical center in the axial direction for use; c. Left eye spectacle lens scale mark: Take a vertical strip of spectacle lens and use a marker to draw dotted lines on the 10° and 190° scales on the patch and set aside; d. Marking the scale on the right eye lens: Take a vertical strip of eyeglass lens and use a marker to draw dotted lines on the 170° and 350° scales on the lens for later use. e. Take the marked left eye lens and left eye lens patch, drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, rotate the lens so that the horizontal reference line of the lens coincides with the dotted lines of the 10° and 190° scale directions of the patch, and press with your hand to squeeze out the water between the lens and the patch body; f. Take the marked right eye lens and the right eye lens patch, drip water on the convex surface of the lens, align the geometric center of the second surface of the patch body with the optical center of the lens, rotate the lens so that the horizontal reference line of the lens coincides with the dotted lines of the 170° and 350° scale directions of the patch, and press with your hand to squeeze out the water between the lens and the patch body; g. According to the size of the glasses, cut off the excess parts of the left and right eye patches respectively; h. Install the left and right eye lenses on the glasses frames respectively.

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