Ophthalmic lens

Abstract

An ophthalmic lens comprising a central optic zone, a first outer annular optic zone, a second outer annular optic zone, and a third outer annular optic zone; the first outer annular optic zone surrounds the central optic zone; the second outer annular optic zone surrounds the first outer annular optic zone; the third outer annular optic zone surrounds the second outer annular optic zone; 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 are disposed anywhere in the central optic zone, the first outer annular optic zone, the second outer annular optic zone, and the third outer annular optic zone, increasing the refractive power variety arrangement of the ophthalmic lens.

Description

Technical Field

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

[0002] With the widespread use of 3C products, the incidence of myopia among children and adolescents is showing a trend of younger ages, leading to a significant increase in the proportion of patients with high myopia. Among these, 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 and instead 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. However, 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 discomfort to the wearer, especially during long-term use, which is difficult to tolerate and can reduce the effect of vision control. Summary of the Invention

[0004] In view of this, 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 present invention provides an ophthalmic lens comprising 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 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 ophthalmic lens has a refractive power distribution curve, and each of the first refractive correction regions is located at a refractive power distribution curve. The diopter distribution curve is a horizontal straight line. The second and third refractive correction regions are wavy on the diopter 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 advantage of this invention is that the ophthalmic lens, through its multifocal refractive power design, reduces visual fatigue for the wearer, resulting in clearer and more comfortable wear. Furthermore, the ophthalmic lens can arbitrarily allocate the two first refractive correction regions, the second refractive correction region, and the third refractive correction region within the central optical region, the first outer ring optical region, the second outer ring optical region, and the third outer ring optical region as needed, with each refractive correction region having its refractive power adjusted accordingly, thereby increasing the diversity of refractive power arrangements of the ophthalmic lens. Attached Figure Description

[0007] The above and other features of the present invention will be described in detail with reference to the accompanying drawings.

[0008] Figure 1A This is a schematic diagram of the structure of an ophthalmic lens according to a first preferred embodiment of the present invention.

[0009] Figure 1B This is a graph showing the refractive power distribution of an ophthalmic lens according to a first preferred embodiment of the present invention.

[0010] Figure 2 This is a graph showing the refractive power distribution of an ophthalmic lens according to a second preferred embodiment of the present invention.

[0011] Figure 3 This is a graph showing the refractive power distribution of an ophthalmic lens according to a third preferred embodiment of the present invention.

[0012] Figure 4 This is a graph showing the refractive power distribution of an ophthalmic lens according to the fourth preferred embodiment of the present invention.

[0013] Figure 5 This is a graph showing the refractive power distribution of an ophthalmic lens according to the fifth preferred embodiment of the present invention.

[0014] Explanation of reference numerals in the attached figures:

[0015] 100, 200, 300, 400, 500: Ophthalmic lenses

[0016] 10: Central optical zone

[0017] 20: First outer ring optical zone

[0018] 30: Second outer ring optical zone

[0019] 40: Third Outer Ring Optical Zone

[0020] O: Center point

[0021] S1: First peak

[0022] T1: First trough

[0023] S2: Second peak

[0024] T2: Second trough

[0025] A1, A2, A3, A4, A5: First refractive correction zone

[0026] B1, B2, B3, B4, B5: Second refractive correction zone

[0027] C1, C2, C3, C4, C5: Third refractive correction zone Detailed Implementation

[0028] To more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figure 1A , Figure 1B The ophthalmic lens 100 of the first preferred embodiment of the present invention includes 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 the first embodiment, the ophthalmic lens 100 is described using a contact lens as an example, but is not limited thereto.

[0029] 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, and 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 arranged concentrically with respect to the center point O.

[0030] 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 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 vision correction requirements. The first outer ring optical region 20, the second outer ring optical region 30, and the third outer ring optical region 40 may arbitrarily arrange the two first refractive correction regions A1, the second refractive correction region B1, and the third refractive correction region C1, without limiting the two first refractive correction regions A1, the second refractive correction region B1, and the third refractive correction region C1 to be arranged sequentially 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.

[0031] 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 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; in yet another preferred 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, 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 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.

[0032] Table 1 shows the configuration of each refractive correction zone in each optical zone of ophthalmic lenses.

[0033]

[0034]

[0035] like Figure 1BAs shown in the first embodiment, the ophthalmic lens 100 is plotted on the 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, while 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 multiple peaks. Specifically, the second refractive correction region B1 has multiple first peaks S1 and multiple first troughs T1 in the refractive power distribution curve, and the third refractive correction region C1 has multiple second peaks S2 and multiple 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.

[0036] To ensure that the ophthalmic lens 100 has a good visual correction effect, in the first embodiment, the ophthalmic lens 100 meets the following condition:

[0037] (1) 3.5mm≤Z1+Z2+Z3+Z4≤5.0mm;

[0038] (2) 0.25mm≤Z1≤1.4mm;

[0039] (3) 0.25mm≤Z2≤1.4mm;

[0040] (4) 0.25mm≤Z3≤1.4mm;

[0041] (5) 0.25mm≤Z4≤1.4mm;

[0042] (6) -1.00D≤PPSD≤1.00D;

[0043] (7) -3.00D≤PPSD-PPS1≤3.00D;

[0044] (8) -4.00D≤PPS1-PPS2≤4.00D;

[0045] (9) 1.00D≤│PPS1-PPT1│≤4.00D;

[0046] (10) 1.00D≤│PPS2-PPT2│≤4.00D.

[0047] Wherein, Z1 is the distance from the center point of the central optical region 10 to its boundary, 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 its boundary, wherein the boundary of the first outer ring optical region 20 is the intersection of the first outer ring optical region 20 and the second outer ring optical region 30; Z3 is the distance from the boundary of the second outer ring optical region 30 to its boundary, 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; Z4 is the distance from the boundary of the third outer ring optical region 40 to its boundary, wherein... The boundary of the third 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 regions A1; PPS1 is the peak refractive power of each of the first peaks S1 in the second refractive correction region B1; PPT1 is the valley refractive power of each of the first valleys T1 in the second refractive correction region B1, wherein the peak refractive power PPS1 of the second refractive correction region B1 is based on the highest first peak S1, and the second refractive correction region B1... The refractive error trough PPT1 is based on the lowest first trough T1; PPS2 is the peak refractive error of each second peak S2 in the third refractive correction region C1, and PPT2 is the trough refractive error of each second trough T2 in the third refractive correction region C1. The peak refractive error PPS2 of the third refractive correction region C1 is based on the highest second peak S2, and the trough refractive error PPT2 of the third refractive correction region C1 is based on the lowest second trough T2.

[0048] Depend on Figure 1BFrom the refractive power distribution curve, it can be seen that 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... 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 -1.00D, the peak refractive power PPS1 of the second refractive correction area B1 is 1.00D, the valley refractive power PPT1 of the second refractive correction area B1 is 0.00D; the peak refractive power PPS2 of the third refractive correction area C1 is 2.00D, and the valley refractive power PPT2 of the third refractive correction area C1 is 1.00D.

[0049] Therefore, based on the detailed values ​​of the aforementioned refractive power distribution curve, the specific values ​​of the conditional formula for the aforementioned ophthalmic lens 100 in the first embodiment are as follows:

[0050] (1) Z1+Z2+Z3+Z4=4.0mm;

[0051] (2) Z1 = 1.0 mm;

[0052] (3) Z2 = 1.0 mm;

[0053] (4) Z3 = 1.0 mm;

[0054] (5) Z4 = 1.0 mm;

[0055] (6) PPSD = -1.00D;

[0056] (7) PPSD-PPS1 = -2.00D;

[0057] (8) PPS1-PPS2=-1.00D;

[0058] (9) │PPS1-PPT1│=1.00D;

[0059] (10) │PPS2-PPT2│=1.00D.

[0060] Thus, the first embodiment satisfies the conditions set at points (1) to (10) of the aforementioned ophthalmic lens 100; furthermore, 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 values ​​of the refractive power of the second refractive correction region B1 are... The difference in refractive power |PPS1-PPT1| is the same as the difference in refractive power peak and trough |PPS2-PPT2| between the third refractive correction area C1; thus, the ophthalmic lens 100, through its multifocal refractive power design, reduces the difference in refractive power between any two adjacent central optical areas 10, the first outer ring optical area 20, the second outer ring optical area 30, and the third outer ring optical area 30, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 100 clearer and more comfortable to wear.

[0061] Please refer to Figure 2 The ophthalmic lens 200 of the second preferred embodiment of the present invention includes 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 morphology 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 substantially 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.

[0062] 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 within 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. Figure 2As shown in the second embodiment, the ophthalmic lens 200 is plotted on the refractive power distribution curve. The two first refractive correction regions A2 are located in the central optical region 10 and the second outer ring optical region 30, respectively. 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. Each of the first refractive correction regions A2 forms a horizontal straight line on the refractive power distribution curve, while the second refractive correction region B2 and the third refractive correction region C2 form horizontal straight lines on the refractive power distribution curve. The refractive correction region B2 and the third refractive correction region C2 each have multiple peaks. Specifically, the second refractive correction region B2 has multiple first peaks S1 and multiple first troughs T1 in the refractive power distribution curve, and the third refractive correction region C2 has multiple second peaks S2 and multiple second troughs T2 in the refractive power distribution curve. However, in other embodiments, the second refractive correction region B2 and the third refractive correction region C2 only need to have at least one peak in the refractive power distribution curve.

[0063] To ensure that the ophthalmic lens 200 has a good visual correction effect, in the second embodiment, the ophthalmic lens 200 meets the following condition:

[0064] (1) 3.5mm≤Z1+Z2+Z3+Z4≤5.0mm;

[0065] (2) 0.25mm≤Z1≤1.4mm;

[0066] (3) 0.25mm≤Z2≤1.4mm;

[0067] (4) 0.25mm≤Z3≤1.4mm;

[0068] (5) 0.25mm≤Z4≤1.4mm;

[0069] (6) -1.00D≤PPSD≤1.00D;

[0070] (7) -3.00D≤PPSD-PPS1≤3.00D;

[0071] (8) -4.00D≤PPS1-PPS2≤4.00D;

[0072] (9) 1.00D≤│PPS1-PPT1│≤4.00D;

[0073] (10) 1.00D≤│PPS2-PPT2│≤4.00D.

[0074] Wherein, Z1 is the distance from the center point of the central optical region 10 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; 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.

[0075] Depend on Figure 2 From the refractive power distribution curve, it can be seen that 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... 1.0 mm, the total length 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 -1.00D, the peak refractive power PPS1 of the second refractive correction area B2 is 1.00D, the valley refractive power PPT1 of the second refractive correction area B2 is 0.00D; the peak refractive power PPS2 of the third refractive correction area C2 is 2.00D, and the valley refractive power PPT2 of the third refractive correction area C2 is 1.00D.

[0076] Therefore, based on the detailed values ​​of the aforementioned refractive power distribution curve, the specific values ​​of the conditional formula for the aforementioned ophthalmic lens 200 in the second embodiment are as follows:

[0077] (1) Z1+Z2+Z3+Z4=4.0mm;

[0078] (2) Z1 = 1.0 mm;

[0079] (3) Z2 = 1.0 mm;

[0080] (4) Z3 = 1.0 mm;

[0081] (5) Z4 = 1.0 mm;

[0082] (6) PPSD = -1.00D;

[0083] (7) PPSD-PPS1 = -2.00D;

[0084] (8) PPS1-PPS2=-1.00D;

[0085] (9) │PPS1-PPT1│=1.00D;

[0086] (10) │PPS2-PPT2│=1.00D.

[0087] Thus, the second embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 200; furthermore, in the ophthalmic lens 200 of the second embodiment, the second refractive correction region B2 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 are respectively higher than those of each of the first refractive correction regions A2, wherein the peak refractive power of the second refractive correction region B2 is... The difference between the refractive power value and the trough value |PPS1-PPT1| is the same as the difference between the peak value and the trough value |PPS2-PPT2| of the third refractive correction area C2; thus, the ophthalmic lens 200, through its multifocal refractive power design, reduces the difference in refractive power between any two adjacent central optical areas 10, the first outer ring optical area 20, the second outer ring optical area 30, and the third outer ring optical area 30, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 200 clearer and more comfortable to wear.

[0088] Please refer to Figure 3 The ophthalmic lens 300 of the third preferred embodiment of the present invention includes 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 substantially 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.

[0089] 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 within 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. Figure 3 As shown in the third embodiment, the ophthalmic lens 300 is plotted on the refractive power distribution curve. The two first refractive correction regions A3 are located in the central optical region 10 and the third outer ring optical region 40, respectively. 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. Each of the first refractive correction regions A3 forms a horizontal straight line on the refractive power distribution curve, while the second refractive correction region B3 and the third refractive correction region C3 form a horizontal straight line on the refractive power distribution curve. The refractive correction region B3 and the third refractive correction region C3 each have multiple peaks. Specifically, the second refractive correction region B3 has multiple first peaks S1 and multiple first troughs T1 in the refractive power distribution curve, and the third refractive correction region C3 has multiple second peaks S2 and multiple second troughs T2 in the refractive power distribution curve. However, in other embodiments, the second refractive correction region B3 and the third refractive correction region C3 only need to have at least one peak in the refractive power distribution curve.

[0090] To ensure that the ophthalmic lens 300 has a good visual correction effect, in the third embodiment, the ophthalmic lens 300 meets the following condition:

[0091] (1) 3.5mm≤Z1+Z2+Z3+Z4≤5.0mm;

[0092] (2) 0.25mm≤Z1≤1.4mm;

[0093] (3) 0.25mm≤Z2≤1.4mm;

[0094] (4) 0.25mm≤Z3≤1.4mm;

[0095] (5) 0.25mm≤Z4≤1.4mm;

[0096] (6) -1.00D≤PPSD≤1.00D;

[0097] (7) -3.00D≤PPSD-PPS1≤3.00D;

[0098] (8) -4.00D≤PPS1-PPS2≤4.00D;

[0099] (9) 1.00D≤│PPS1-PPT1│≤4.00D;

[0100] (10) 1.00D≤│PPS2-PPT2│≤4.00D.

[0101] Wherein, Z1 is the distance from the center point of the central optical region 10 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; 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.

[0102] Depend on Figure 3 From the refractive power distribution curve, it can be seen that 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 third outer ring optical region 40 to the boundary of the second outer ring optical region 30 is... 1.0 mm, the total length 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 -1.00D, the peak refractive power PPS1 of the second refractive correction area B3 is 1.00D, the valley refractive power PPT1 of the second refractive correction area B3 is 0.00D; the peak refractive power PPS2 of the third refractive correction area C3 is 2.00D, and the valley refractive power PPT2 of the third refractive correction area C3 is 1.00D.

[0103] Therefore, based on the detailed values ​​of the aforementioned refractive power distribution curve, the specific values ​​of the conditional formula for the aforementioned ophthalmic lens 300 in the third embodiment are as follows:

[0104] (1) Z1+Z2+Z3+Z4=4.0mm;

[0105] (2) Z1 = 1.0 mm;

[0106] (3) Z2 = 1.0 mm;

[0107] (4) Z3 = 1.0 mm;

[0108] (5) Z4 = 1.0 mm;

[0109] (6) PPSD = -1.00D;

[0110] (7) PPSD-PPS1 = -2.00D;

[0111] (8) PPS1-PPS2=-1.00D;

[0112] (9) │PPS1-PPT1│=1.00D;

[0113] (10) │PPS2-PPT2│=1.00D.

[0114] Thus, the third embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 300; furthermore, in the ophthalmic lens 300 of 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 fall within the range of... The difference |PPS1-PPT1| and the difference |PPS2-PPT2| between the peak and trough values ​​of refractive power in the third refractive correction region C3 are all the same; thus, the ophthalmic lens 300, through its multifocal refractive power design, 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 30, providing an effect of reducing visual fatigue for the wearer, making the ophthalmic lens 300 clearer and more comfortable to wear.

[0115] Please refer to Figure 4The ophthalmic lens 400 of the fourth preferred embodiment of the present invention includes 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 substantially 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.

[0116] 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 within 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. Figure 4 As shown in the fourth embodiment, the ophthalmic lens 400 is plotted on the refractive power distribution curve. 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, while the second refractive correction region B4 and the third refractive correction region C4 respectively appear as horizontal lines on the refractive power distribution curve. The refractive correction region B4 and the third refractive correction region C4 each have multiple peaks. Specifically, the second refractive correction region B4 has multiple first peaks S1 and multiple first troughs T1 in the refractive power distribution curve, and the third refractive correction region C4 has multiple second peaks S2 and multiple second troughs T2 in the refractive power distribution curve. However, in other embodiments, the second refractive correction region B4 and the third refractive correction region C4 only need to have at least one peak in the refractive power distribution curve.

[0117] To ensure that the ophthalmic lens 400 has a good visual correction effect, in the fourth embodiment, the ophthalmic lens 400 meets the following condition:

[0118] (1) 3.5mm≤Z1+Z2+Z3+Z4≤5.0mm;

[0119] (2) 0.25mm≤Z1≤1.4mm;

[0120] (3) 0.25mm≤Z2≤1.4mm;

[0121] (4) 0.25mm≤Z3≤1.4mm;

[0122] (5) 0.25mm≤Z4≤1.4mm;

[0123] (6) -1.00D≤PPSD≤1.00D;

[0124] (7) -3.00D≤PPSD-PPS1≤3.00D;

[0125] (8) -4.00D≤PPS1-PPS2≤4.00D;

[0126] (9) 1.00D≤│PPS1-PPT1│≤4.00D;

[0127] (10) 1.00D≤│PPS2-PPT2│≤4.00D.

[0128] Wherein, Z1 is the distance from the center point of the central optical region 10 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; 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; and PPT2 is the valley refractive power of each of the second valleys T2 in the third refractive correction region C4.

[0129] Depend on Figure 4From the refractive power distribution curve, it can be seen that 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... 1.0 mm, the total length 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 A4 is -1.00D, the peak refractive power PPS1 of the second refractive correction area B4 is 1.00D, the valley refractive power PPT1 of the second refractive correction area B4 is 0.00D; the peak refractive power PPS2 of the third refractive correction area C4 is 2.00D, and the valley refractive power PPT2 of the third refractive correction area C4 is 1.00D.

[0130] Therefore, based on the detailed values ​​of the aforementioned refractive power distribution curve, the specific values ​​of the conditional formula for the aforementioned ophthalmic lens 400 in the fourth embodiment are as follows:

[0131] (1) Z1+Z2+Z3+Z4=4.0mm;

[0132] (2) Z1 = 1.0 mm;

[0133] (3) Z2 = 1.0 mm;

[0134] (4) Z3 = 1.0 mm;

[0135] (5) Z4 = 1.0 mm;

[0136] (6) PPSD = -1.00D;

[0137] (7) PPSD-PPS1 = -2.00D;

[0138] (8) PPS1-PPS2=-1.00D;

[0139] (9) │PPS1-PPT1│=1.00D;

[0140] (10) │PPS2-PPT2│=1.00D.

[0141] Thus, the fourth embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 400; furthermore, in the ophthalmic lens 400 of the fourth embodiment, the two first refractive correction regions A4 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 and trough refractive power of the second refractive correction region B4 are... The difference in refractive power |PPS1-PPT1| is the same as the difference in refractive power peak and trough |PPS2-PPT2| between the third refractive correction area C4; thus, the ophthalmic lens 400, through its multifocal refractive power design, reduces the difference in refractive power between any two adjacent central optical areas 10, the first outer ring optical area 20, the second outer ring optical area 30, and the third outer ring optical area 30, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 400 clearer and more comfortable to wear.

[0142] Please refer to Figure 5 The ophthalmic lens 500 of the fifth preferred embodiment of the present invention includes 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 substantially 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.

[0143] 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 within 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. Figure 5As shown in the fifth embodiment, the ophthalmic lens 500 is plotted on the refractive power distribution curve. The two first refractive correction regions A5 are located in the first outer ring optical zone 20 and the third outer ring optical zone 40, the second refractive correction region B5 is located in the central optical zone 10, and the third refractive correction region C5 is located in the second outer ring optical zone 30. Each of the first refractive correction regions A5 appears as a horizontal straight line on the refractive power distribution curve, while the second refractive correction region B5 and the third refractive correction region C5 respectively appear as horizontal straight lines on the refractive power distribution curve. The refractive correction region B5 and the third refractive correction region C5 each have multiple peaks. Specifically, the second refractive correction region B5 has multiple first peaks S1 and multiple first troughs T1 in the refractive power distribution curve, and the third refractive correction region C5 has multiple second peaks S2 and multiple second troughs T2 in 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 in the refractive power distribution curve.

[0144] To ensure that the ophthalmic lens 500 has a good visual correction effect, in the fifth embodiment, the ophthalmic lens 500 meets the following condition:

[0145] (1) 3.5mm≤Z1+Z2+Z3+Z4≤5.0mm;

[0146] (2) 0.25mm≤Z1≤1.4mm;

[0147] (3) 0.25mm≤Z2≤1.4mm;

[0148] (4) 0.25mm≤Z3≤1.4mm;

[0149] (5) 0.25mm≤Z4≤1.4mm;

[0150] (6) -1.00D≤PPSD≤1.00D;

[0151] (7) -3.00D≤PPSD-PPS1≤3.00D;

[0152] (8) -4.00D≤PPS1-PPS2≤4.00D;

[0153] (9) 1.00D≤│PPS1-PPT1│≤4.00D;

[0154] (10) 1.00D≤│PPS2-PPT2│≤4.00D.

[0155] Wherein, Z1 is the distance from the center point of the central optical region 10 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; 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.

[0156] Depend on Figure 5 From the refractive power distribution curve, it can be seen that 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... 1.0 mm, the total length 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 -1.00D, the peak refractive power PPS1 of the second refractive correction area B5 is 1.00D, the valley refractive power PPT1 of the second refractive correction area B5 is 0.00D; the peak refractive power PPS2 of the third refractive correction area C5 is 2.00D, and the valley refractive power PPT2 of the third refractive correction area C5 is 1.00D.

[0157] Therefore, based on the detailed values ​​of the aforementioned refractive power distribution curve, the specific values ​​of the conditional formula for the aforementioned ophthalmic lens 500 in the fifth embodiment are as follows:

[0158] (1) Z1+Z2+Z3+Z4=4.0mm;

[0159] (2) Z1 = 1.0 mm;

[0160] (3) Z2 = 1.0 mm;

[0161] (4) Z3 = 1.0 mm;

[0162] (5) Z4 = 1.0 mm;

[0163] (6) PPSD = -1.00D;

[0164] (7) PPSD-PPS1 = -2.00D;

[0165] (8) PPS1-PPS2=-1.00D;

[0166] (9) │PPS1-PPT1│=1.00D;

[0167] (10) │PPS2-PPT2│=1.00D.

[0168] Thus, the fifth embodiment satisfies the conditions set in points (1) to (10) of the aforementioned ophthalmic lens 500; furthermore, in the ophthalmic lens 500 of the fifth embodiment, one of the first refractive correction regions A5 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 B5... The difference between the peak and trough refractive power of the 5th refractive power region |PPS1-PPT1| is the same as the difference between the peak and trough refractive power of the third refractive correction region C5 |PPS2-PPT2|. Thus, the ophthalmic lens 500, through its multifocal refractive power design, 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 30, thereby reducing visual fatigue for the wearer and making the ophthalmic lens 500 clearer and more comfortable to wear.

[0169] In summary, the ophthalmic lenses of the first to fifth embodiments, through their multifocal refractive power design, reduce the refractive power difference 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 30, thereby reducing visual fatigue for the wearer and making the ophthalmic lenses clearer and more comfortable to wear. Furthermore, the ophthalmic lenses can be configured to arbitrarily allocate the two first refractive correction regions, the second refractive correction region, and the third refractive correction region among 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, with each refractive correction region having its refractive power adjusted separately, thereby increasing the diversity of refractive power arrangements of the ophthalmic lenses.

[0170] The above description is only a preferred and feasible embodiment of the present invention. Any equivalent changes made by applying the present invention specification and claims should be included within the patent scope of the present invention.

Claims

1. An ophthalmic lens, comprising: A central optical region, having a central point; A first outer ring optical region surrounds the central optical region; A second outer ring optical region surrounds the first outer ring optical region; and A third outer ring optical region surrounds 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. 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. The ophthalmic lens has a refractive power distribution curve. Each of the first refractive correction regions appears as a horizontal straight line on the refractive power distribution curve. The second refractive correction region and the third refractive correction region each appear as a wave on the refractive power distribution curve, and each of the second refractive correction region and the third refractive correction region has at least one peak. in, 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 area; Z2 is the distance from the boundary of the central optical area to the boundary of the first outer ring optical area; Z3 is the distance from the boundary of the first outer ring optical area to the boundary of the second outer ring optical area; and Z4 is the distance from the boundary of the second outer ring optical area to the boundary of the third outer ring optical area.

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 of 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. The ophthalmic lens according to any one of claims 1 to 4, wherein the ophthalmic lens satisfies the following range: -1.00D ≤ PPSD ≤ 1.00D, wherein PPSD is the refractive power of each of the first refractive correction zones.

6. The ophthalmic lens according to 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. The ophthalmic lens according to any one of claims 1 to 4, wherein the ophthalmic lens satisfies the following range: -4.00D≤PPS1-PPS2≤4.00D, wherein 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. The ophthalmic lens according to any one of claims 1 to 4, wherein the second refractive correction region has a plurality of first peaks and a plurality of first troughs in the refractive power distribution curve, and the ophthalmic lens satisfies the following range: 1.00D≤│PPS1-PPT1│≤4.00D, wherein 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 troughs in the second refractive correction region.

9. The ophthalmic lens according to 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.

10. The ophthalmic lens of claim 1, wherein the ophthalmic lens satisfies the following range: 0.25mm ≤ Z1 ≤ 1.4mm, where Z1 is the distance from the center point to the boundary of the central optical area.

11. The ophthalmic lens of claim 1, wherein the ophthalmic lens satisfies the following range: 0.25mm ≤ Z2 ≤ 1.4mm, where Z2 is the distance from the boundary of the central optical area to the boundary of the first outer ring optical area.

12. The ophthalmic lens of 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 area extending from the boundary of the first outer ring optical area to the boundary of the second outer ring optical area.

13. The ophthalmic lens of claim 1, wherein the ophthalmic lens satisfies the following range: 0.25mm ≤ Z4 ≤ 1.4mm, where Z4 is the distance between the third outer ring optical zone and the boundary of the second outer ring optical zone.

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