ophthalmic lenses

Abstract

An ophthalmic lens includes a central optical region, a first outer ring optical region, a second outer ring optical region, and a third outer ring optical region; the first outer ring optical region surrounds the central optical region; the second outer ring optical region surrounds the first outer ring optical region; and the third outer ring optical region surrounds the second outer ring optical region; wherein the ophthalmic lens defines two first refractive correction regions, a second refractive correction region, and a third refractive correction region, and the two first refractive correction regions, the second refractive correction region, and the third refractive correction region are arbitrarily arranged in the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region, thereby increasing the diversity of refractive power arrangements of the ophthalmic lens.

Description

[Technical Field]

[0001] This invention relates to ophthalmic lenses; in particular, it refers to a multifocal ophthalmic lens. [Previous Technology]

[0002] With the popularization of 3C products, the incidence of myopia in children and adolescents is showing a trend of younger age, resulting in a significant increase in the proportion of patients with high myopia. Among them, vision problems are not limited to myopia and hyperopia, but are also often accompanied by astigmatism. When light passes through the cornea and focuses normally on the retina, it can form a clear image; however, if the light cannot focus on a single focal point, but forms multiple focal points, astigmatism will occur, which will lead to problems such as image distortion, blurring and other issues when viewing objects at near and far distances, seriously affecting the quality of vision.

[0003] The traditional main method for correcting visual deviation is to wear ophthalmic lenses, such as contact lenses. Since the refractive power of traditional ophthalmic lenses with multifocal vision correction function is mostly designed to gradually increase from the central area to the peripheral area, this refractive power change pattern can easily cause wearers to feel discomfort, especially when used for a long time, which is difficult to tolerate and reduces the effect of vision control. [Summary of the Invention]

[0004] In view of the above, the purpose of the present invention is to provide an ophthalmic lens that provides a multifocal refractive power design and can arbitrarily change the refractive arrangement according to vision correction needs, thereby reducing visual fatigue and making the ophthalmic lens clearer and more comfortable to wear.

[0005] To achieve the above objectives, the ophthalmic lens provided by the present invention includes a central optical region, a first outer ring optical region, a second outer ring optical region, and a third outer ring optical region; the first outer ring optical region surrounds the central optical region; the second outer ring optical region surrounds the first outer ring optical region; and the third outer ring optical region surrounds the second outer ring optical region; wherein the ophthalmic lens defines two first refractive correction regions, a second refractive correction region, and a third refractive correction region, the two first refractive correction regions, the second refractive correction region, and the third refractive correction region being arbitrarily disposed in the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region; the ophthalmic lens has a refractive power distribution curve, and each of the first refractive correction regions is located within the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region. The refractive power distribution curve is a horizontal straight line. The second and third refractive correction regions are wavy on the refractive power distribution curve, and each of the second and third refractive correction regions has at least one peak. The ophthalmic lens satisfies the following range: 3.5mm ≤ Z1 + Z2 + Z3 + Z4 ≤ 5.0mm, where Z1 is the distance from the center point to the boundary of the central optical zone; Z2 is the distance from the boundary of the central optical zone to the boundary of the first outer ring optical zone; Z3 is the distance from the boundary of the first outer ring optical zone to the boundary of the second outer ring optical zone; and Z4 is the distance from the boundary of the second outer ring optical zone to the boundary of the third outer ring optical zone.

[0006] The effect of the present invention is that the ophthalmic lens, through the design of multifocal refractive power, provides the effect of reducing visual fatigue of the wearer, making the ophthalmic lens clearer and more comfortable to wear. Moreover, the ophthalmic lens can arbitrarily allocate the two first refractive correction areas, the second refractive correction area and the third refractive correction area in the central optical area, the first outer ring optical area, the second outer ring optical area and the third outer ring optical area according to the needs, and adjust the refractive power of each refractive correction area, thereby increasing the diversity of refractive power arrangement of the ophthalmic lens.

Implementation Method

[0007] To more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to Figures 1A and 1B, which illustrate an ophthalmic lens 100 according to a first preferred embodiment of the present invention, comprising a central optical region 10, a first outer ring optical region 20, a second outer ring optical region 30, and a third outer ring optical region 40. In this first embodiment, the ophthalmic lens 100 is illustrated using a contact lens, but is not limited thereto.

[0008] The central optical region 10 has a center point O. The first outer ring optical region 20 surrounds the central optical region 10. The second outer ring optical region 30 surrounds the first outer ring optical region 20. The third outer ring optical region 40 surrounds the second outer ring optical region 30. In the first embodiment, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 are respectively concentrically arranged with respect to the center point O.

[0009] The ophthalmic lens 100 defines two first refractive correction regions A1, a second refractive correction region B1, and a third refractive correction region C1. The two first refractive correction regions A1, the second refractive correction region B1, and the third refractive correction region C1 are arbitrarily disposed in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30, and the third outer ring optical region 40, indicating that the ophthalmic lens 100 can be arbitrarily disposed in the central optical region according to vision correction requirements. The two first refractive correction regions A1, B1 and C1 can be arbitrarily arranged in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40. It is not limited to the two first refractive correction regions A1, B1 and C1 being arranged in sequence in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40.

[0010] In a preferred embodiment, the two first refractive correction regions are respectively located in two of the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region, and the second refractive correction region and / or the third refractive correction region are arranged between the two first refractive correction regions; in another preferred embodiment, the two first refractive correction regions are arranged adjacent to each other in two of the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region, and the second refractive correction region or the third refractive correction region is arranged on one side of one of the first refractive correction regions; in yet another preferred embodiment... In this embodiment, the two first refractive correction regions are arranged adjacently in the first outer ring optical region and the second outer ring optical region, the second refractive correction region and the third refractive correction region are located in the central optical region and the third outer ring optical region, and the two first refractive correction regions are arranged between the second refractive correction region and the third refractive correction region; for example, in the ophthalmic lens 100, the two first refractive correction regions A1, the second refractive correction region B1 and the third refractive correction region C1 can be selected and configured in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 according to Table 1 below. Table 1 is a table showing the configuration relationship of each refractive correction region in each optical region in the ophthalmic lens. Optical area arrangement Central optical zone 10 First Outer Ring Optical Zone 20 Second outer ring optical zone 30 Third Outer Ring Optical Zone 40 Arrangement of refractive correction area and corresponding optical zone First refractive correction area A1 First refractive correction area A1 Third refractive correction area C1 Second refractive correction area B1 First refractive correction area A1 First refractive correction area A1 Second refractive correction area B1 Third refractive correction area C1 First refractive correction area A1 Third refractive correction area C1 Second refractive correction area B1 First refractive correction area A1 First refractive correction area A1 Second refractive correction area B1 Third refractive correction area C1 First refractive correction area A1 First refractive correction area A1 Second refractive correction area B1 First refractive correction area A1 Third refractive correction area C1 First refractive correction area A1 Third refractive correction area C1 First refractive correction area A1 Second refractive correction area B1 Second refractive correction area B1 First refractive correction area A1 First refractive correction area A1 Third refractive correction area C1 Third refractive correction area C1 First refractive correction area A1 First refractive correction area A1 Second refractive correction area B1 Second refractive correction area B1 First refractive correction area A1 Third refractive correction area C1 First refractive correction area A1 Third refractive correction area C1 First refractive correction area A1 Second refractive correction area B1 First refractive correction area A1 Second refractive correction area B1 Third refractive correction area C1 First refractive correction area A1 First refractive correction area A1 Third refractive correction area C1 Second refractive correction area B1 First refractive correction area A1 First refractive correction area A1

[0011] As shown in Figure 1B, in the first embodiment, the ophthalmic lens 100 is plotted on a refractive power distribution curve. The two first refractive correction regions A1 are arranged adjacently in the central optical region 10 and the first outer ring optical region 20. The second refractive correction region B1 is located in the second outer ring optical region 30, and the third refractive correction region C1 is located in the third outer ring optical region 40. Each of the first refractive correction regions A1 forms a horizontal straight line on the refractive power distribution curve, and the second refractive correction region B1 and the third refractive correction region C1 respectively form a horizontal straight line on the refractive power distribution curve. The refractive correction region B1 and the third refractive correction region C1 each have a plurality of peaks. Specifically, the second refractive correction region B1 has a plurality of first peaks S1 and a plurality of first troughs T1 in the refractive power distribution curve, and the third refractive correction region C1 has a plurality of second peaks S2 and a plurality of second troughs T2 in the refractive power distribution curve. However, in other embodiments, the second refractive correction region B1 and the third refractive correction region C1 only need to have at least one peak in the refractive power distribution curve.

[0012] To ensure that the ophthalmic lens 100 has a good visual acuity correction effect, in the first embodiment, the ophthalmic lens 100 meets the following conditions: (1) 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; (2) 0.25mm≦Z1≦1.4mm; (3) 0.25mm≦Z2≦1.4mm; (4) 0.25mm≦Z3≦1.4mm; (5) 0.25mm≦Z4≦1.4mm; (6) -1.00D≦PPS1≦1.00D; (7) -3.00D≦PPS1-PPS2≦3.00D; (8) -4.00D≦PPS1-PPS2≦4.00D; (9) 1.00D≦│PPS1-PPT1│≦4.00D; (10) 1.00D≦│PPS2-PPT2│≦4.00D.

[0013] Wherein, Z1 is the distance from the center point to the boundary of the central optical region 10, wherein the boundary of the central optical region 10 is the intersection of the central optical region 10 and the first outer ring optical region 20, and the center point is the starting point of the refractive power distribution curve; Z2 is the distance from the boundary of the first outer ring optical region 20 to the boundary of the central optical region 10, wherein the boundary of the first outer ring optical region 20 is the intersection of the central optical region 10 and the first outer ring optical region 20. Z3 is the intersection of the first outer ring optical region 20 and the second outer ring optical region 30; Z4 is the distance from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30, wherein the boundary of the second outer ring optical region 30 is the intersection of the second outer ring optical region 30 and the third outer ring optical region 40; Z5 is the distance from the boundary of the second outer ring optical region 20 to the boundary of the third outer ring optical region 40, wherein the first outer ring optical region 20 is the intersection of the second outer ring optical region 20 and the third outer ring optical region 40. The outer ring optical zone 40 is the outer periphery of the ophthalmic lens; PPSD is the refractive power of each of the first refractive correction zones A1; PPS1 is the peak refractive power of each of the first peaks S1 in the second refractive correction zone B1; PPT1 is the valley refractive power of each of the first valleys T1 in the second refractive correction zone B1, wherein the peak refractive power PPS1 of the second refractive correction zone B1 is based on the highest first peak S1, and the refractive power of the second refractive correction zone B1 is... The diopter trough value PPT1 is based on the lowest first trough T1; PPS2 is the peak diopter value of each second peak S2 in the third refractive correction region C1, and PPT2 is the trough diopter value of each second trough T2 in the third refractive correction region C1. The peak diopter value PPS2 of the third refractive correction region C1 is based on the highest second peak S2, and the trough diopter value PPT2 of the third refractive correction region C1 is based on the lowest second trough T2.

[0014] As can be seen from the refractive power distribution curve in Figure 1B, in the first embodiment, the distance Z1 from the center point to the boundary of the central optical region 10 is 1.0 mm, the distance Z2 from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20 is 1.0 mm, the distance Z3 from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30 is 1.0 mm, and the distance Z4 from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40 is... Z4 = 1.0 mm. The total distance from the center point of the central optical zone 10 to the boundary of the third outer ring optical zone 40 in the refractive power distribution curve is Z1 + Z2 + Z3 + Z4 = 4.0 mm. The refractive power PPSD of each of the first refractive correction areas A1 is -1.00 D. The peak refractive power PPS1 of the second refractive correction area B1 is 1.00 D. The valley refractive power PPT1 of the second refractive correction area B1 is 0.00 D. The peak refractive power PPS2 of the third refractive correction area C1 is 2.00 D. The valley refractive power PPT2 of the third refractive correction area C1 is 1.00 D.

[0015] Therefore, based on the detailed values ​​of the above-mentioned refractive power distribution curve, the specific values ​​of the condition formula of the aforementioned ophthalmic lens 100 in the first embodiment are as follows: (1) Z1+Z2+Z3+Z4=4.0mm; (2) Z1=1.0mm; (3) Z2=1.0mm; (4) Z3=1.0mm; (5) Z4=1.0mm; (6) PPSD=-1.00D; (7) PPSD-PPS1=-2.00D; (8) PPS1-PPS2=-1.00D; (9) |PPS1-PPT1|=1.00D; (10) |PPS2-PPT2|=1.00D.

[0016] Thus, the first embodiment satisfies the conditions set at points (1) to (10) of the aforementioned ophthalmic lens 100; in addition, the refractive power of the two first refractive correction regions A1, the second refractive correction region B1 and the third refractive correction region C1 in the ophthalmic lens 100 of the first embodiment is arranged by a progressively increasing power change of the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40, wherein the peak and trough refractive power of the second refractive correction region B1 are... The difference in refractive power |PPS1-PPT1| and the difference in refractive power peak and valley values ​​|PPS2-PPT2| of the third refractive correction area C1 are the same; thus, by means of a multifocal refractive power design, the ophthalmic lens 100 reduces the difference in refractive power between any two adjacent central optical areas 10, the first outer ring optical areas 20, the second outer ring optical areas 30 and the third outer ring optical areas 40, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 100 clearer and more comfortable to wear.

[0017] Please refer to Figure 2, which shows an ophthalmic lens 200 of the second preferred embodiment of the present invention, including a central optical region 10, a first outer ring optical region 20, a second outer ring optical region 30 and a third outer ring optical region 40. The shape of the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 in the second embodiment is basically the same as that described in the first embodiment above, meaning that the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 are sequentially surrounding the central optical region 10.

[0018] The ophthalmic lens 200 defines two first refractive correction regions A2, a second refractive correction region B2, and a third refractive correction region C2. The two first refractive correction regions A2, the second refractive correction region B2, and the third refractive correction region C2 are arbitrarily disposed in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30, and the third outer ring optical region 40. As shown in FIG2, in the second embodiment, in the refractive power distribution curve of the ophthalmic lens 200, the two first refractive correction regions A2 are respectively located in the central optical region 10 and the second outer ring optical region 30, the second refractive correction region B2 is located in the first outer ring optical region 20, and the third refractive correction region C2 is located in the third outer ring optical region 40. The first refractive correction region A2 appears as a horizontal straight line on the refractive power distribution curve. The second refractive correction region B2 and the third refractive correction region C2 each appear as continuously changing wavy shapes on the refractive power distribution curve, and the second refractive correction region B2 and the third refractive correction region C2 each have a plurality of peaks. Specifically, the second refractive correction region B2 has a plurality of first peaks S1 and a plurality of first troughs T1 on the refractive power distribution curve, and the third refractive correction region C2 has a plurality of second peaks S2 and a plurality of second troughs T2 on the refractive power distribution curve. However, in other embodiments, the second refractive correction region B2 and the third refractive correction region C2 each only need to have at least one peak on the refractive power distribution curve.

[0019] To ensure that the ophthalmic lens 200 has a good visual acuity correction effect, in the second embodiment, the ophthalmic lens 200 meets the following conditions: (1) 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; (2) 0.25mm≦Z1≦1.4mm; (3) 0.25mm≦Z2≦1.4mm; (4) 0.25mm≦Z3≦1.4mm; (5) 0.25mm≦Z4≦1.4mm; (6) -1.00D≦PPS1≦1.00D; (7) -3.00D≦PPS1-PPS2≦3.00D; (8) -4.00D≦PPS1-PPS2≦4.00D; (9) 1.00D≦│PPS1-PPT1│≦4.00D; (10) 1.00D≦│PPS2-PPT2│≦4.00D.

[0020] Wherein, Z1 is the distance from the center point to the boundary of the central optical region 10; Z2 is the distance from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20; Z3 is the distance from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30; Z4 is the distance from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40. The spacing of the boundaries of optical zone 40; PPSD is the refractive power of each of the first refractive correction regions A2; PPS1 is the peak refractive power of each of the first peaks S1 in the second refractive correction region B2, PPT1 is the valley refractive power of each of the first valleys T1 in the second refractive correction region B2; PPS2 is the peak refractive power of each of the second peaks S2 in the third refractive correction region C2, and PPT2 is the valley refractive power of each of the second valleys T2 in the third refractive correction region C2.

[0021] As can be seen from the refractive power distribution curve in Figure 2, in the second embodiment, the distance Z1 from the center point to the boundary of the central optical region 10 is 1.0 mm, the distance Z2 from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20 is 1.0 mm, the distance Z3 from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30 is 1.0 mm, and the distance Z4 from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40 is... Z4 = 1.0 mm. The total distance from the center point of the central optical zone 10 to the boundary of the third outer ring optical zone 40 in the refractive power distribution curve is Z1 + Z2 + Z3 + Z4 = 4.0 mm. The refractive power PPSD of each of the first refractive correction areas A2 is -1.00 D. The peak refractive power PPS1 of the second refractive correction area B2 is 1.00 D. The valley refractive power PPT1 of the second refractive correction area B2 is 0.00 D. The peak refractive power PPS2 of the third refractive correction area C2 is 2.00 D. The valley refractive power PPT2 of the third refractive correction area C2 is 1.00 D.

[0022] Therefore, based on the detailed values ​​of the above-mentioned refractive power distribution curve, the specific values ​​of the condition formula of the aforementioned ophthalmic lens 200 in the second embodiment are as follows: (1) Z1+Z2+Z3+Z4=4.0mm; (2) Z1=1.0mm; (3) Z2=1.0mm; (4) Z3=1.0mm; (5) Z4=1.0mm; (6) PPSD=-1.00D; (7) PPSD-PPS1=-2.00D; (8) PPS1-PPS2=-1.00D; (9) |PPS1-PPT1|=1.00D; (10) |PPS2-PPT2|=1.00D.

[0023] Thus, the second embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 200; in addition, in the second embodiment, the second refractive correction region B2 of the ophthalmic lens 200 is located between the two first refractive correction regions A2, the third refractive correction region C2 is located on one side of one of the first refractive correction regions A2, and the refractive power of the second refractive correction region B2 and the third refractive correction region C2 is higher than that of each of the first refractive correction regions A2, wherein the refractive power of the second refractive correction region B2 is higher than that of each of the first refractive correction regions A2. The difference between the peak and trough diopter values ​​|PPS1-PPT1| and the difference between the peak and trough diopter values ​​|PPS2-PPT2| in the third refractive correction area C2 are the same; thus, by using a multifocal diopter design, the ophthalmic lens 200 reduces the difference in diopter values ​​between any two adjacent central optical areas 10, the first outer ring optical areas 20, the second outer ring optical areas 30, and the third outer ring optical areas 40, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 200 clearer and more comfortable to wear.

[0024] Please refer to Figure 3, which shows an ophthalmic lens 300 of the third preferred embodiment of the present invention, including a central optical region 10, a first outer ring optical region 20, a second outer ring optical region 30 and a third outer ring optical region 40. The shape of the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 in the third embodiment is basically the same as that described in the first embodiment above, meaning that the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 are sequentially surrounding the central optical region 10.

[0025] The ophthalmic lens 300 defines two first refractive correction regions A3, a second refractive correction region B3, and a third refractive correction region C3. The two first refractive correction regions A3, the second refractive correction region B3, and the third refractive correction region C3 are arbitrarily disposed in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30, and the third outer ring optical region 40. As shown in FIG3, in the third embodiment, in the refractive power distribution curve of the ophthalmic lens 300, the two first refractive correction regions A3 are respectively located in the central optical region 10 and the third outer ring optical region 40, the second refractive correction region B3 is located in the first outer ring optical region 20, and the third refractive correction region C3 is located in the second outer ring optical region 30, wherein each... The first refractive correction region A3 appears as a horizontal straight line on the refractive power distribution curve. The second refractive correction region B3 and the third refractive correction region C3 each appear as continuously changing wavy shapes on the refractive power distribution curve, and the second refractive correction region B3 and the third refractive correction region C3 each have a plurality of peaks. Specifically, the second refractive correction region B3 has a plurality of first peaks S1 and a plurality of first troughs T1 on the refractive power distribution curve, and the third refractive correction region C3 has a plurality of second peaks S2 and a plurality of second troughs T2 on the refractive power distribution curve. However, in other embodiments, the second refractive correction region B3 and the third refractive correction region C3 each only need to have at least one peak on the refractive power distribution curve.

[0026] To ensure that the ophthalmic lens 300 has a good visual acuity correction effect, in the third embodiment, the ophthalmic lens 300 meets the following conditions: (1) 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; (2) 0.25mm≦Z1≦1.4mm; (3) 0.25mm≦Z2≦1.4mm; (4) 0.25mm≦Z3≦1.4mm; (5) 0.25mm≦Z4≦1.4mm; (6) -1.00D≦PPS1≦1.00D; (7) -3.00D≦PPS1-PPS2≦3.00D; (8) -4.00D≦PPS1-PPS2≦4.00D; (9) 1.00D≦│PPS1-PPT1│≦4.00D; (10) 1.00D≦│PPS2-PPT2│≦4.00D.

[0027] Wherein, Z1 is the distance from the center point to the boundary of the central optical region 10; Z2 is the distance from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20; Z3 is the distance from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30; Z4 is the distance from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40. The spacing of the boundaries of optical zone 40; PPSD is the refractive power of each of the first refractive correction regions A3; PPS1 is the peak refractive power of each of the first peaks S1 in the second refractive correction region B3, PPT1 is the valley refractive power of each of the first valleys T1 in the second refractive correction region B3; PPS2 is the peak refractive power of each of the second peaks S2 in the third refractive correction region C3, and PPT2 is the valley refractive power of each of the second valleys T2 in the third refractive correction region C3.

[0028] As can be seen from the refractive power distribution curve in Figure 3, in the third embodiment, the distance Z1 from the center point to the boundary of the central optical region 10 is 1.0 mm, the distance Z2 from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20 is 1.0 mm, the distance Z3 from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30 is 1.0 mm, and the distance Z4 from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40 is... Z4 = 1.0 mm. The total distance from the center point of the central optical zone 10 to the boundary of the third outer ring optical zone 40 in the refractive power distribution curve is Z1 + Z2 + Z3 + Z4 = 4.0 mm. The refractive power PPSD of each of the first refractive correction areas A3 is -1.00 D. The peak refractive power PPS1 of the second refractive correction area B3 is 1.00 D. The valley refractive power PPT1 of the second refractive correction area B3 is 0.00 D. The peak refractive power PPS2 of the third refractive correction area C3 is 2.00 D. The valley refractive power PPT2 of the third refractive correction area C3 is 1.00 D.

[0029] Therefore, based on the detailed values ​​of the above-mentioned refractive power distribution curve, the specific values ​​of the condition formula of the aforementioned ophthalmic lens 300 in the third embodiment are as follows: (1) Z1+Z2+Z3+Z4=4.0mm; (2) Z1=1.0mm; (3) Z2=1.0mm; (4) Z3=1.0mm; (5) Z4=1.0mm; (6) PPSD=-1.00D; (7) PPSD-PPS1=-2.00D; (8) PPS1-PPS2=-1.00D; (9) |PPS1-PPT1|=1.00D; (10) |PPS2-PPT2|=1.00D.

[0030] Thus, the third embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 300; in addition, in the third embodiment, the second refractive correction region B3 and the third refractive correction region C3 are respectively located between the two first refractive correction regions A3, and the refractive power of the second refractive correction region B3 and the third refractive correction region C3 is higher than that of each of the first refractive correction regions A3, wherein the peak and trough refractive power of the second refractive correction region B3 are... The difference in refractive power |PPS1-PPT1| and the difference in refractive power peak and valley values ​​|PPS2-PPT2| of the third refractive correction area C3 are the same; thus, by means of a multifocal refractive power design, the ophthalmic lens 300 reduces the difference in refractive power between any two adjacent central optical areas 10, the first outer ring optical areas 20, the second outer ring optical areas 30 and the third outer ring optical areas 40, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 300 clearer and more comfortable to wear.

[0031] Please refer to Figure 4, which shows an ophthalmic lens 400 of the fourth preferred embodiment of the present invention, including a central optical region 10, a first outer ring optical region 20, a second outer ring optical region 30 and a third outer ring optical region 40. The shape of the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 in the fourth embodiment is basically the same as that described in the first embodiment above, meaning that the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 are sequentially surrounding the central optical region 10.

[0032] The ophthalmic lens 400 defines two first refractive correction regions A4, a second refractive correction region B4, and a third refractive correction region C4. The two first refractive correction regions A4, the second refractive correction region B4, and the third refractive correction region C4 are arbitrarily disposed in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30, and the third outer ring optical region 40. As shown in FIG4, in the fourth embodiment, in the refractive power distribution curve of the ophthalmic lens 400, the two first refractive correction regions A4 are arranged adjacently in the first outer ring optical region 20 and the second outer ring optical region 30, the second refractive correction region B4 is located in the central optical region 10, and the third refractive correction region C4 is located in the third outer ring optical region 40. Each of the first refractive correction regions A4 appears as a horizontal straight line on the refractive power distribution curve. The second refractive correction region B4 and the third refractive correction region C4 respectively appear as continuously changing wavy shapes on the refractive power distribution curve, and each of the second refractive correction regions B4 and the third refractive correction region C4 has a plurality of peaks. Specifically, the second refractive correction region B4 has a plurality of first peaks S1 and a plurality of first troughs T1 on the refractive power distribution curve, and the third refractive correction region C4 has a plurality of second peaks S2 and a plurality of second troughs T2 on the refractive power distribution curve. However, in other embodiments, each of the second refractive correction region B4 and the third refractive correction region C4 only needs to have at least one peak on the refractive power distribution curve.

[0033] To ensure that the ophthalmic lens 400 has a good visual correction effect, in the fourth embodiment, the ophthalmic lens 400 meets the following conditions: (1) 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; (2) 0.25mm≦Z1≦1.4mm; (3) 0.25mm≦Z2≦1.4mm; (4) 0.25mm≦Z3≦1.4mm; (5) 0.25mm≦Z4≦1.4mm; (6) -1.00D≦PPS1≦1.00D; (7) -3.00D≦PPS1-PPS2≦3.00D; (8) -4.00D≦PPS1-PPS2≦4.00D; (9) 1.00D≦│PPS1-PPT1│≦4.00D; (10) 1.00D≦│PPS2-PPT2│≦4.00D.

[0034] Wherein, Z1 is the distance from the center point to the boundary of the central optical region 10; Z2 is the distance from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20; Z3 is the distance from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30; Z4 is the distance from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40. The spacing of the boundaries of optical zone 40; PPSD is the refractive power of each of the first refractive correction regions A4; PPS1 is the peak refractive power of each of the first peaks S1 in the second refractive correction region B4, PPT1 is the valley refractive power of each of the first valleys T1 in the second refractive correction region B4; PPS2 is the peak refractive power of each of the second peaks S2 in the third refractive correction region C4, PPT2 is the valley refractive power of each of the second valleys T2 in the third refractive correction region C4.

[0035] As can be seen from the refractive power distribution curve in Figure 4, in the fourth embodiment, the distance Z1 from the center point to the boundary of the central optical region 10 is 1.0 mm, the distance Z2 from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20 is 1.0 mm, the distance Z3 from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30 is 1.0 mm, and the distance Z4 from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40 is... Z4 = 1.0 mm. The total distance from the center point of the central optical zone 10 to the boundary of the third outer ring optical zone 40 in the refractive power distribution curve is Z1 + Z2 + Z3 + Z4 = 4.0 mm. The refractive power PPSD of each of the first refractive correction regions A4 is -1.00 D. The peak refractive power PPS1 of the second refractive correction region B4 is 1.00 D. The valley refractive power PPT1 of the second refractive correction region B4 is 0.00 D. The peak refractive power PPS2 of the third refractive correction region C4 is 2.00 D. The valley refractive power PPT2 of the third refractive correction region C4 is 1.00 D.

[0036] Therefore, based on the detailed values ​​of the above-mentioned refractive power distribution curve, the specific values ​​of the condition formula of the aforementioned ophthalmic lens 400 in the fourth embodiment are as follows: (1) Z1+Z2+Z3+Z4=4.0mm; (2) Z1=1.0mm; (3) Z2=1.0mm; (4) Z3=1.0mm; (5) Z4=1.0mm; (6) PPSD=-1.00D; (7) PPSD-PPS1=-2.00D; (8) PPS1-PPS2=-1.00D; (9) |PPS1-PPT1|=1.00D; (10) |PPS2-PPT2|=1.00D.

[0037] Thus, the fourth embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 400; in addition, in the fourth embodiment, the two first refractive correction regions A4 in the ophthalmic lens 400 are arranged adjacently between the second refractive correction region B4 and the third refractive correction region C4, and the refractive power of the second refractive correction region B4 and the third refractive correction region C4 is higher than that of each of the first refractive correction regions A4, wherein the peak refractive power and the refractive power of the second refractive correction region B4 are higher than those of the first refractive correction regions A4. The difference between the trough values ​​| PPS1-PPT1 | and the difference between the peak and trough values ​​of the refractive power | PPS2-PPT2 | of the third refractive correction area C4 are the same; thus, by means of a multifocal refractive power design, the ophthalmic lens 400 reduces the difference in refractive power between any two adjacent central optical areas 10, the first outer ring optical areas 20, the second outer ring optical areas 30 and the third outer ring optical areas 40, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 400 clearer and more comfortable to wear.

[0038] Please refer to Figure 5, which shows the ophthalmic lens 500 of the fifth preferred embodiment of the present invention, including a central optical region 10, a first outer ring optical region 20, a second outer ring optical region 30 and a third outer ring optical region 40. The shape of the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 in the fifth embodiment is basically the same as that described in the first embodiment above, meaning that the first outer ring optical region 20, the second outer ring optical region 30 and the third outer ring optical region 40 are sequentially surrounding the central optical region 10.

[0039] The ophthalmic lens 500 defines two first refractive correction regions A5, a second refractive correction region B5, and a third refractive correction region C5. The two first refractive correction regions A5, the second refractive correction region B5, and the third refractive correction region C5 are arbitrarily disposed in the central optical region 10, the first outer ring optical region 20, the second outer ring optical region 30, and the third outer ring optical region 40. As shown in FIG5, in the fifth embodiment, in the refractive power distribution curve of the ophthalmic lens 500, the two first refractive correction regions A5 are located in the first outer ring optical region 20 and the third outer ring optical region 40, the second refractive correction region B5 is located in the central optical region 10, and the third refractive correction region C5 is located in the second outer ring optical region 30. The first refractive correction region A5 appears as a horizontal straight line on the refractive power distribution curve. The second refractive correction region B5 and the third refractive correction region C5 each appear as continuously changing wavy shapes on the refractive power distribution curve, and the second refractive correction region B5 and the third refractive correction region C5 each have a plurality of peaks. Specifically, the second refractive correction region B5 has a plurality of first peaks S1 and a plurality of first troughs T1 on the refractive power distribution curve, and the third refractive correction region C5 has a plurality of second peaks S2 and a plurality of second troughs T2 on the refractive power distribution curve. However, in other embodiments, the second refractive correction region B5 and the third refractive correction region C5 each only need to have at least one peak on the refractive power distribution curve.

[0040] To ensure that the ophthalmic lens 500 has a good visual correction effect, in the fifth embodiment, the ophthalmic lens 500 meets the following conditions: (1) 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; (2) 0.25mm≦Z1≦1.4mm; (3) 0.25mm≦Z2≦1.4mm; (4) 0.25mm≦Z3≦1.4mm; (5) 0.25mm≦Z4≦1.4mm; (6) -1.00D≦PPS1≦1.00D; (7) -3.00D≦PPS1-PPS2≦3.00D; (8) -4.00D≦PPS1-PPS2≦4.00D; (9) 1.00D≦│PPS1-PPT1│≦4.00D; (10) 1.00D≦│PPS2-PPT2│≦4.00D.

[0041] Wherein, Z1 is the distance from the center point to the boundary of the central optical region 10; Z2 is the distance from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20; Z3 is the distance from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30; Z4 is the distance from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40. The spacing of the boundaries of optical zone 40; PPSD is the refractive power of each of the first refractive correction regions A5; PPS1 is the peak refractive power of each of the first peaks S1 in the second refractive correction region B5, PPT1 is the valley refractive power of each of the first valleys T1 in the second refractive correction region B5; PPS2 is the peak refractive power of each of the second peaks S2 in the third refractive correction region C5, and PPT2 is the valley refractive power of each of the second valleys T2 in the third refractive correction region C5.

[0042] As can be seen from the refractive power distribution curve in Figure 5, in the fifth embodiment, the distance Z1 from the center point to the boundary of the central optical region 10 is 1.0 mm; the distance Z2 from the boundary of the central optical region 10 to the boundary of the first outer ring optical region 20 is 1.0 mm; the distance Z3 from the boundary of the first outer ring optical region 20 to the boundary of the second outer ring optical region 30 is 1.0 mm; and the distance Z4 from the boundary of the second outer ring optical region 30 to the boundary of the third outer ring optical region 40 is... Z4 = 1.0 mm. The total distance from the center point of the central optical zone 10 to the boundary of the third outer ring optical zone 40 in the refractive power distribution curve is Z1 + Z2 + Z3 + Z4 = 4.0 mm. The refractive power PPSD of each of the first refractive correction areas A5 is -1.00 D. The peak refractive power PPS1 of the second refractive correction area B5 is 1.00 D. The valley refractive power PPT1 of the second refractive correction area B5 is 0.00 D. The peak refractive power PPS2 of the third refractive correction area C5 is 2.00 D. The valley refractive power PPT2 of the third refractive correction area C5 is 1.00 D.

[0043] Therefore, based on the detailed values ​​of the above-mentioned refractive power distribution curve, the specific values ​​of the condition formula of the aforementioned ophthalmic lens 500 in the fifth embodiment are as follows: (1) Z1+Z2+Z3+Z4=4.0mm; (2) Z1=1.0mm; (3) Z2=1.0mm; (4) Z3=1.0mm; (5) Z4=1.0mm; (6) PPSD=-1.00D; (7) PPSD-PPS1=-2.00D; (8) PPS1-PPS2=-1.00D; (9) |PPS1-PPT1|=1.00D; (10) |PPS2-PPT2|=1.00D.

[0044] Thus, the fifth embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 500; in addition, in the fifth embodiment, one of the first refractive correction regions A5 in the ophthalmic lens 500 is located between the second refractive correction region B5 and the third refractive correction region C4, and the other first refractive correction region A5 is located on one side of the third refractive correction region C5, and the refractive power of the second refractive correction region B5 and the third refractive correction region C5 is higher than that of each of the first refractive correction regions A5, wherein the second refractive correction region The difference between the peak and trough refractive power in region B5 (PPS1-PPT1) is the same as the difference between the peak and trough refractive power in the third refractive correction region C5 (PPS2-PPT2). Thus, by using a multifocal refractive power design, the ophthalmic lens 500 reduces the difference in refractive power between any two adjacent central optical zones 10, the first outer ring optical zone 20, the second outer ring optical zone 30, and the third outer ring optical zone 40, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 500 clearer and more comfortable to wear.

[0045] In summary, the ophthalmic lenses of the first to fifth embodiments, through the design of multifocal refractive power, reduce the difference in refractive power between any two adjacent central optical zones 10, the first outer ring optical zone 20, the second outer ring optical zone 30, and the third outer ring optical zone 40, thereby reducing visual fatigue for the wearer and making the ophthalmic lenses clearer and more comfortable to wear. In addition, the ophthalmic lenses can arbitrarily allocate the two first refractive correction areas, the second refractive correction area, and the third refractive correction area in the central optical zone, the first outer ring optical zone, the second outer ring optical zone, and the third outer ring optical zone according to vision correction needs, and each refractive correction area is separately allocated with refractive power, thereby increasing the diversity of refractive power arrangement of the ophthalmic lenses.

[0046] The above description is only a preferred embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the claims should be included within the patent scope of the present invention. [Simplified Explanation of the Diagram]

[0047] The above and other features of the present invention will be described in detail with reference to the accompanying drawings. FIG1A is a schematic diagram of the structure of an ophthalmic lens according to a first preferred embodiment of the present invention. FIG1B is a graph showing the refractive power distribution of the ophthalmic lens according to the first preferred embodiment of the present invention. FIG2 is a graph showing the refractive power distribution of the ophthalmic lens according to a second preferred embodiment of the present invention. FIG3 is a graph showing the refractive power distribution of the ophthalmic lens according to a third preferred embodiment of the present invention. FIG4 is a graph showing the refractive power distribution of the ophthalmic lens according to a fourth preferred embodiment of the present invention. FIG5 is a graph showing the refractive power distribution of the ophthalmic lens according to a fifth preferred embodiment of the present invention.

Claims

1. An ophthalmic lens comprising: a central optical region having a central point; a first outer ring optical region surrounding the central optical region; a second outer ring optical region surrounding the first outer ring optical region; and a third outer ring optical region surrounding the second outer ring optical region; The ophthalmic lens defines two first refractive correction regions, a second refractive correction region, and a third refractive correction region. These three regions are arbitrarily positioned within the central optical zone, the first outer ring optical zone, the second outer ring optical zone, and the third outer ring optical zone. The ophthalmic lens has a refractive power distribution curve. Each of the first refractive correction regions appears as a horizontal straight line on the curve. The second and third refractive correction regions each appear as wavy lines on the curve, and each has at least one peak. The second refractive correction region has a plurality of first peaks and a plurality of first troughs on the curve. The ophthalmic lens meets the following ranges: 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; 1.00D≦│PPS1-PPT1│≦4.00D, where Z1 is the distance from the center point to the boundary of the central optical zone; Z2 is the distance from the boundary of the central optical zone to the boundary of the first outer ring optical zone; Z3 is the distance from the boundary of the first outer ring optical zone to the boundary of the second outer ring optical zone; Z4 is the distance from the boundary of the second outer ring optical zone to the boundary of the third outer ring optical zone; PPS1 is the peak refractive power of each of the first peaks in the second refractive correction region, and PPT1 is the valley refractive power of each of the first valleys in the second refractive correction region.

2. The ophthalmic lens as claimed in claim 1, wherein the two first refractive correction regions are respectively located in two of the central optical region, the first outer ring optical region, the second outer ring optical region and the third outer ring optical region, and the second refractive correction region and / or the third refractive correction region are arranged between the two first refractive correction regions.

3. The ophthalmic lens as claimed in claim 1, wherein the two first refractive correction regions are arranged adjacently in two of the central optical region, the first outer ring optical region, the second outer ring optical region and the third outer ring optical region, and the second refractive correction region or the third refractive correction region is arranged on one side of one of the first refractive correction regions.

4. The ophthalmic lens as claimed in claim 1, wherein the two first refractive correction regions are arranged adjacently in the first outer ring optical region and the second outer ring optical region, the second refractive correction region and the third refractive correction region are located in the central optical region and the third outer ring optical region, and the two first refractive correction regions are arranged between the second refractive correction region and the third refractive correction region.

5. An ophthalmic lens as described in any one of claims 1 to 4, wherein the ophthalmic lens satisfies the following range: -1.00D ≤ PPSD ≤ 1.00D, where PPSD is the refractive power of each of the first refractive correction zones.

6. An ophthalmic lens as described in any one of claims 1 to 4, wherein the ophthalmic lens satisfies the following range: -3.00D≦PPSD-PPS1≦3.00D, where PPSD is the refractive power of each of the first refractive correction regions and PPS1 is the peak refractive power of the second refractive correction region.

7. An ophthalmic lens as described in any one of claims 1 to 4, wherein the ophthalmic lens satisfies the following range: -4.00D≦PPS1-PPS2≦4.00D, where PPS1 is the peak refractive power of the second refractive correction region and PPS2 is the peak refractive power of the third refractive correction region.

8. An ophthalmic lens as described in any one of claims 1 to 4, wherein the third refractive correction region has a plurality of continuously varying second peaks and a plurality of second troughs in the refractive power distribution curve, and the ophthalmic lens satisfies the following range: 1.00D ≦│PPS2-PPT2│ ≦4.00D, wherein PPS2 is the peak refractive power of each of the second peaks in the third refractive correction region, and PPT2 is the trough refractive power of each of the second troughs in the third refractive correction region.

9. An ophthalmic lens as claimed in claim 1, wherein the ophthalmic lens satisfies the following range: 0.25 mm ≤ Z1 ≤ 1.4 mm, where Z1 is the distance from the center point to the boundary of the central optical zone.

10. The ophthalmic lens as claimed in claim 1, wherein the ophthalmic lens satisfies the following range: 0.25mm ≤ Z2 ≤ 1.4mm, where Z2 is the distance between the first outer ring optical zone and the boundary of the central optical zone.

11. The ophthalmic lens as claimed in claim 1, wherein the ophthalmic lens satisfies the following range: 0.25mm ≤ Z3 ≤ 1.4mm, where Z3 is the distance between the second outer ring optical region and the boundary of the first outer ring optical region.

12. An ophthalmic lens, comprising: a central optical region having a central point; a first outer ring optical region surrounding the central optical region; a second outer ring optical region surrounding the first outer ring optical region; and a third outer ring optical region surrounding the second outer ring optical region; wherein the ophthalmic lens defines two first refractive correction regions, a second refractive correction region, and a third refractive correction region, the two first refractive correction regions, the second refractive correction region, and the third refractive correction region being arbitrarily disposed in the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region, the ophthalmic lens having a refractive power distribution curve, each of the first refractive correction regions being a horizontal straight line on the refractive power distribution curve, the second refractive correction region and the third refractive correction region being wavy on the refractive power distribution curve, and each of the second refractive correction region and the third refractive correction region having at least one peak; The ophthalmic lens meets the following ranges: 3.5mm≦Z1+Z2+Z3+Z4≦5.0mm; -3.00D≦PPSD-PPS1≦3.00D; -4.00D≦PPS1-PPS2≦4.00D; 0.25mm≦Z1≦1.4mm; 0.25mm≦Z2≦1.4mm; 0.25mm≦Z3≦1.4mm; 0.25mm≦Z4≦1.4mm, where Z1 is the distance from the center point to the boundary of the central optical zone. Z2 is the distance from the boundary of the central optical region to the boundary of the first outer ring optical region; Z3 is the distance from the boundary of the first outer ring optical region to the boundary of the second outer ring optical region; Z4 is the distance from the boundary of the second outer ring optical region to the boundary of the third outer ring optical region; PPSD is the refractive power of each of the first refractive correction regions; PPS1 is the peak refractive power of the second refractive correction region; and PPS2 is the peak refractive power of the third refractive correction region.

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