Goggle lenses

Abstract

We provide goggle lenses that can be brought closer to the user's face and also improve their appearance. [Solution] The goggle lens is configured to be worn by the user in combination with a frame. The goggle lens includes a central lens body 1 configured to be positioned on the opposite side from the user and having a central curved convex surface 12 having a lateral radius of curvature, and two side lens bodies 2 extending laterally from both the left and right sides of the central lens body 1, each having a first side lens portion 21. Each first side lens portion 21 of the side lens body 2 has a curved convex surface 212 configured to be positioned on the opposite side from the user. The curved convex surface 212 of each first side lens portion 21 of the side lens body 2 has a lateral radius of curvature. The lateral radius of curvature of the curved convex surface 212 of each first side lens portion 21 of the side lens body 2 is smaller than the lateral radius of curvature of the central curved convex surface 12 of the central lens body 1.

Description

[[Technical Field]]

[0001] The present invention relates to lenses, and in particular to lenses for goggles used for driving, sports, work and the like. [[Background Art]]

[0002] Conventional goggle lenses generally have a surface with a single radius of curvature. As a result, when worn by a user, the central portion of the goggle lens is relatively far from the central portion of the user's face and does not fit the user's face well. [[Prior Art Literature]] [[Patent Literature]]

[0003] [[Patent Literature 1]] United States Patent Application Publication No. 2024 / 0004222 [[Summary of the Invention]] [[Problem to be Solved by the Invention]]

[0004] Accordingly, an object of the present invention is to provide a goggle lens that can reduce at least one of the disadvantages of the prior art. [[Means for Solving the Problem]]

[0005] The goggle lens is configured to be worn by a user in combination with a frame. The goggle lens comprises: a central lens body configured to be located on a side opposite to the user and having a central curved convex surface with a lateral radius of curvature; and two side lens bodies each extending laterally from the left and right sides of the central lens body and each having a first side lens portion. Each of the first side lens portions of the side lens bodies has a curved convex surface configured to be located on a side opposite to the user. The curved convex surface of each of the first side lens portions of the side lens bodies has a lateral radius of curvature. The lateral radius of curvature of the curved convex surface of each of the first side lens portions of the side lens bodies is smaller than the lateral radius of curvature of the central curved convex surface of the central lens body. [Effects of the Invention]

[0006] Because the lateral curvature radius of the central curved convex surface of the central lens body is greater than the lateral curvature radius of the curved convex surface of each of the first side lens bodies, when goggles having the goggle lenses of the present invention are worn by a user, the central lens body can be brought closer to the user's face, resulting in a superior fit and improved appearance.

[0007] Other features and advantages of the present invention will become apparent in the following detailed description of embodiments with reference to the accompanying drawings. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows the state in which the goggle lens according to the first embodiment of the present invention is combined with the frame and worn by the user. [Figure 2] This is a perspective view of the goggle lens of the first embodiment. [Figure 3] This is a front view of the goggle lens of the first embodiment. [Figure 4] This is a cross-sectional view along the line IV-IV in Figure 3. [Figure 5] This is a cross-sectional view along the VV line in Figure 3. [Figure 6] This is an enlarged view of Figure 5, showing the lateral radius of curvature of the goggle lens in the first embodiment. [Figure 7] This figure is similar to Figure 4 and shows the longitudinal radius of curvature of the goggle lens in the first embodiment. [Figure 8] This is a perspective view of a goggle lens according to a second embodiment of the present invention. [Figure 9] This is a front view of the goggle lens of the second embodiment. [Figure 10] This is a cross-sectional view along line XX in Figure 9. [Modes for carrying out the invention]

[0009] Before describing the present invention in more detail, it should be noted that, where appropriate, reference numerals or their terminology may be repeated between drawings to indicate corresponding or similar elements that may have similar characteristics.

[0010] Referring to Figures 1 to 3, the goggle lens according to the first embodiment of the present invention is configured to be worn by a user 9 in combination with a frame 8. The goggle lens includes a central lens body 1 and two side lens bodies 2.

[0011] Referring to Figures 2, 4, and 5, the central lens body 1 has a central curved concave surface 11 configured to face the face of the user 9, and a central curved convex surface 12 configured to be on the opposite side of the central curved concave surface 11 and on the opposite side of the face of the user 9. The central curved convex surface 12 has a lateral radius of curvature (hereinafter referred to as the first lateral radius of curvature) and a longitudinal radius of curvature (hereinafter referred to as the first longitudinal radius of curvature). The first longitudinal radius of curvature may be greater than or equal to the first lateral radius of curvature.

[0012] The first lateral radius of curvature is the radius of curvature of any point on the curve (hereinafter referred to as the first lateral arc CT1) where the normal plane extending laterally from any point on the central curved convex surface 12 intersects the central curved convex surface 12. In this embodiment, the first lateral radius of curvature is a fixed value. That is, the lateral radius of curvature of all points on the central curved convex surface 12 is the same.

[0013] The first longitudinal radius of curvature is the radius of curvature of any point on the curve (hereinafter referred to as the first longitudinal arc CL1) where the normal plane extending in the longitudinal direction of any point on the central curved convex surface 12 intersects the central curved convex surface 12. In this embodiment, the first longitudinal radius of curvature is a fixed value. That is, the longitudinal radius of curvature of all points on the central curved convex surface 12 is the same.

[0014] The side lens bodies 2 each extend laterally from both the left and right sides of the central lens body 1. Each side lens body 2 comprises a first side lens portion 21 connected to the central lens body 1, and a second side lens portion 22 extending laterally from a side opposite to the central lens body 1 side of the first side lens portion 21.

[0015] The first side lens portion 21 of each side lens body 2 comprises a curved concave surface 211 (hereinafter referred to as the first curved concave surface) configured to face the face of a user 9, and a curved convex surface 212 (hereinafter referred to as the first curved convex surface) that is opposite the first curved concave surface and configured to be located on a side opposite to the face of the user 9. The first curved convex surface has a transverse radius of curvature (hereinafter referred to as the second transverse radius of curvature) and a longitudinal radius of curvature (hereinafter referred to as the second longitudinal radius of curvature). The second transverse radius of curvature is smaller than the first transverse radius of curvature, and the second longitudinal radius of curvature is equal to the first longitudinal radius of curvature. Due to the configuration in which the second transverse radius of curvature is smaller than the first transverse radius of curvature, when a user wears goggles including the goggle lens of the present invention, the central lens body 1 can be brought closer to the face of the user 9, resulting in excellent fit and better appearance.

[0016] For the first side lens portion 21 of each side lens body 2, the second transverse radius of curvature is the radius of curvature at any point on a curve (hereinafter referred to as the second transverse arc CT2) formed by the intersection of a normal plane extending in the transverse direction at any point on the first curved convex surface and the first curved convex surface. In the present embodiment, the second transverse radius of curvature is a fixed value. That is, the transverse radii of curvature at all points on the first curved convex surface are the same.

[0017] For the first side lens portion 21 of each side lens body 2, the second longitudinal radius of curvature is the radius of curvature at any point on a curve (hereinafter referred to as the second longitudinal arc CL2) formed by the intersection of a normal plane extending in the longitudinal direction at any point on the first curved convex surface and the first curved convex surface. In the present embodiment, the second longitudinal radius of curvature is a fixed value. That is, the longitudinal radii of curvature at all points on the first curved convex surface are the same.

[0018] Each second side lens portion 22 of the side lens body 2 comprises: a curved concave surface 221 (hereinafter referred to as the second curved concave surface) configured to face the face of a user 9, and a curved convex surface 222 (hereinafter referred to as the second curved convex surface) configured to be located on the opposite side of the second curved concave surface and on the opposite side relative to the face of the user 9. The second curved convex surface has a horizontal radius of curvature (hereinafter referred to as the third horizontal radius of curvature) and a vertical radius of curvature (hereinafter referred to as the third vertical radius of curvature).

[0019] For each second side lens portion 22 of the side lens body 2, the third horizontal radius of curvature is the radius of curvature at any point on a curve (hereinafter referred to as the third horizontal arc CT3) formed by the intersection of the normal plane extending in the horizontal direction at any point on the second curved convex surface and the second curved convex surface. In some embodiments, if necessary, the third horizontal radius of curvature may be changed stepwise.

[0020] For each second side lens portion 22 of the side lens body 2, the third vertical radius of curvature is the radius of curvature at any point on a curve (hereinafter referred to as the third vertical arc CL3) formed by the intersection of the normal plane extending in the vertical direction at any point on the second curved convex surface and the second curved convex surface. In this embodiment, the third vertical radius of curvature is a fixed value. That is, the vertical radii of curvature at all points on the second curved convex surface are the same.

[0021] For each second side lens portion 22 of the side lens body 2, the third horizontal radius of curvature is smaller than the first horizontal radius of curvature, and the third vertical radius of curvature is equal to the first vertical radius of curvature.

[0022] Specifically, the first horizontal radius of curvature is not less than 109 millimeters and not more than 234 millimeters, the first vertical radius of curvature is not less than 163 millimeters and not more than 586 millimeters, the second horizontal radius of curvature is not less than 41 millimeters and not more than 73 millimeters, the third horizontal radius of curvature is not less than 41 millimeters and not more than 73 millimeters, the third horizontal radius of curvature is different from the second horizontal radius of curvature, and the second vertical radius of curvature and the third vertical radius of curvature are both equal to the first vertical radius of curvature.

[0023] In other words, the central convex surface 12, the first curved convex surface, and the second curved convex surface are each surfaces having double curvature.

[0024] Furthermore, the refractive index of the material used in the goggle lens can affect the design of the radius of curvature. More specifically, the radius of curvature of each goggle lens of the present invention can be set by the following formula, which is defined as the refractive power, in consideration of the refractive index of the material: (n-1)*1000 / R(mm) -1 ). In the formula, n is the refractive index of the goggle lens and R is the radius of curvature. For the first transverse arc CT1, the refractive power is between 2.5 and 4.5; for the second transverse arc CT2, the refractive power is between 8 and 12; for the third transverse arc CT3, the refractive power is between 8 and 12; and for the first longitudinal arc CL1, the second longitudinal arc CL2, and the third longitudinal arc CL3, the refractive power is between 1 and 3.

[0025] The goggle lenses may, but are not limited to, polycarbonate (PC), glass, or PMMA acrylic resin. In some embodiments, additives may be used in the goggle lenses. In this embodiment, the goggle lenses are made of polycarbonate. In some embodiments, the refractive index of the goggle lenses is between 1.4 and 1.6.

[0026] In some embodiments, the goggle lenses are made of polycarbonate with a refractive index of 1.586, with a first lateral radius of curvature of 130 mm to 234 mm, a first longitudinal radius of curvature of 195 mm to 586 mm, a second lateral radius of curvature of 49 mm to 73 mm, and a third lateral radius of curvature of 49 mm to 73 mm. The first lateral radius of curvature and the first longitudinal radius of curvature within the above ranges provide a good field of view when the user 9 looks forward. Furthermore, the second and third lateral radii of curvature within the above ranges provide a field of view with reduced distortion when the user 9 looks left or right.

[0027] In some embodiments, the goggle lenses may be made of PMMA acrylic resin with a refractive index of 1.49, or glass with a refractive index of 1.52.

[0028] In this embodiment, the first lateral radius of curvature is 167 millimeters, the first longitudinal radius of curvature is 234 millimeters, the second lateral radius of curvature is 65 millimeters, and the third lateral radius of curvature is 53 millimeters.

[0029] In other words, referring to Figures 2, 6, and 7, in this embodiment, the first transverse arc CT1 is part of the circumference of a first virtual circle O1 with a radius of 167 millimeters, the second transverse arc CT2 is part of the circumference of a second virtual circle O2 with a radius of 65 millimeters, the third transverse arc CT3 is part of the circumference of a third virtual circle O3 with a radius of 53 millimeters, and the first vertical arc CL1 is part of the circumference of a fourth virtual circle O4 with a radius of 234 millimeters.

[0030] Since the goggle lenses are symmetrical, only the left half of the goggle lenses is shown and explained in Figure 6. Also, since the second and third longitudinal radii of curvature are equal to the first longitudinal radius of curvature, this specification will only refer to Figure 7, which shows the fourth virtual circle O4 corresponding to the first longitudinal arc CL1, and the virtual circles corresponding to the second and third longitudinal arcs CL2 and CL3 are not shown.

[0031] Since goggle lenses are relatively thin, those skilled in the art will understand why this specification describes the radius of curvature only for the central curved convex surface 12 of the central lens body 1 and the first and second curved convex surfaces of the side lens bodies 2, and omits the description of the radius of curvature for the central curved concave surface 11 of the central lens body 1 and the first and second curved concave surfaces of the side lens bodies 2.

[0032] The goggle lenses are combined with the frame 8 by means of insertion, magnets, or screws, and are worn on the user's face during exercise, driving, or work to protect the user's eyes. The means of combining the goggle lenses and the frame 8 are not limited to those described above. By having a smaller lateral radius of curvature of the side lens body 2 than that of the central lens body 1, the goggle lenses can be brought closer to the user's face, and in addition, distortion of the field of view is improved, providing a wider field of view. On the other hand, if the frame width is the same but the goggle lenses have only a single radius of curvature, a smaller radius of curvature results in a narrower field of view, and a larger radius of curvature means that the lenses will not fit the face, requiring an increase in the depth on both sides of the frame 8.

[0033] In this embodiment, the central lens body 1 is integrally connected to the side lens bodies 2, and furthermore, the connection between the central lens body 1 and the side lens bodies 2 is smooth and does not affect the field of view.

[0034] In some embodiments, each second side lens portion 22 of the side lens body 2 may be omitted.

[0035] Referring to Figures 8, 9, and 10, a goggle lens according to a second embodiment of the present invention is provided. In the second embodiment, the goggle lens further includes an upper lens body 3 and a lower lens body 4.

[0036] The upper lens body 3 extends upward from the upper edge of the central lens body 1 and the upper edge of the side lens body 2. The lower lens body 4 extends downward from the lower edge of the central lens body 1 and the lower edge of the side lens body 2. The upper lens body 3 and the lower lens body 4 are integrally connected to the central lens body 1 and the side lens body 2, respectively. The lower lens body 4 includes two downward extensions 41 that are spaced apart laterally from each other, defining a gap 42. When worn, the bridge of the user's nose is positioned at the gap 42.

[0037] The upper lens body 3 and the lower lens body 4 may have various shapes to match the shape of the frame 8. The upper lens body 3 and the lower lens body 4 are used to widen the vertical field of view.

[0038] In summary, the goggle lens of the present invention, with a second lateral curvature radius smaller than the first lateral curvature radius, allows the central lens body 1 to be brought closer to the user's face 9, reducing visual distortion and improving appearance.

[0039] In the above description, numerous specific details have been given to provide a complete understanding of the embodiments for explanatory purposes. However, it will be apparent to those skilled in the art that one or more other embodiments can be implemented without specific details. Furthermore, in descriptions of "one embodiment" or "one example" in this specification, it should be understood that all descriptions accompanied by ordinal numbers or other designations may be included in specific implementations of the invention having a particular aspect, structure, or feature. Moreover, in this specification, sometimes multiple variations are incorporated into a single embodiment, drawing, or description thereof. This is for the purpose of streamlining this specification and to help understand the multifaceted nature of the invention, and one or more features or specific examples in one embodiment may, where appropriate, be implemented in conjunction with one or more features or specific examples in other embodiments of the invention.

[0040] Although embodiments and variations of the present invention have been described above, the present invention is not limited thereto, and all modifications and equivalent configurations are included as various configurations that fall within the spirit and scope of the broadest interpretation. [Explanation of symbols]

[0041] 1. Central lens 11 Central curved concave surface 12 Central curved convex surface 2 side lens bodies 21 First side lens section 211 Curved concave surface (first curved concave surface) 212 Curved convex surface (first curved convex surface) 22 Second side lens section 221 Curved concave surface (second curved concave surface) 222 Curved convex surface (second curved convex surface) 3 Upper lens body 4. Lower lens body 41 Lower extension part 42 interval 8 frames 9 User CT1 First transverse arc CL1 First longitudinal arc CT2 Second transverse arc CL2 Second vertical arc CT3 Third transverse arc CL3 Third longitudinal arc O1 First virtual circle O2 Second Virtual Circle O3: The Third Virtual Circle O4 The fourth virtual circle

Claims

1. A goggle lens configured to be worn by the user in combination with a frame, A central lens body is configured to be positioned on the opposite side from the user and has a central curved convex surface with a lateral radius of curvature, The device includes two side lens bodies that extend laterally from both the left and right sides of the central lens body, each having a first side lens portion, Each of the first side lens portions of the side lens body has a curved convex surface configured to be located on the opposite side from the user, and each of the first side lens portions of the side lens body has a lateral radius of curvature, and the lateral radius of curvature of the curved convex surface of each of the first side lens portions of the side lens body is smaller than the lateral radius of curvature of the central curved convex surface of the central lens body. Goggle lenses.

2. The goggle lens according to claim 1, wherein the lateral curvature radius of the central curved convex surface of the central lens body is 109 mm or more and 234 mm or less.

3. The goggle lens according to claim 2, wherein the refractive index of the central lens body is 1.4 or more and 1.6 or less.

4. The goggle lens according to claim 3, wherein the lateral curvature radius of the curved convex surface of each of the first side lens portions of the side lens body is 41 millimeters or more and 73 millimeters or less.

5. The goggle lens according to claim 3, wherein the central curved convex surface of the central lens body further has a longitudinal radius of curvature, and the longitudinal radius of curvature of the central curved convex surface of the central lens body is greater than or equal to the transverse radius of curvature of the central curved convex surface of the central lens body.

6. The goggle lens according to claim 5, wherein the longitudinal radius of curvature of the central curved convex surface of the central lens body is 163 mm or more and 586 mm or less.

7. The goggle lens according to claim 6, wherein the central lens body is made of polycarbonate, the lateral radius of curvature of the central curved convex surface of the central lens body is 130 mm or more and 234 mm or less, the longitudinal radius of curvature of the central curved convex surface of the central lens body is 195 mm or more and 586 mm or less, and the lateral radius of curvature of the curved convex surface of each of the first side lens portions of the side lens body is 49 mm or more and 73 mm or less.

8. The goggle lens according to claim 3, wherein the central curved convex surface of the central lens body further has a longitudinal radius of curvature, the curved convex surface of each of the first side lens portions of the side lens body further has a longitudinal radius of curvature, and the longitudinal radius of curvature of the central curved convex surface of the central lens body is equal to the longitudinal radius of curvature of the curved convex surface of each of the first side lens portions of the side lens body.

9. Each of the side lens bodies further has a second side lens body extending laterally from the opposite side of the first side lens body to the central lens body, each of the second side lens bodies has a curved convex surface configured to be located on the opposite side to the user, each of the second side lens bodies has a lateral radius of curvature, the lateral radius of curvature of the curved convex surface of the second side lens body is different from the lateral radius of curvature of the curved convex surface of the first side lens body, and the lateral radius of curvature of the curved convex surface of the second side lens body is smaller than the lateral radius of curvature of the central curved convex surface of the central lens body, according to claim 3.

10. The goggle lens according to claim 9, wherein the lateral curvature radius of the curved convex surface of each of the second side lens portions of the side lens body is 41 millimeters or more and 73 millimeters or less.

11. The goggle lens according to claim 10, wherein the central curved convex surface of the central lens body further has a longitudinal radius of curvature, and the curved convex surfaces of each of the second side lens portions of the side lens bodies further have a longitudinal radius of curvature, and the longitudinal radius of curvature of the central curved convex surface of the central lens body is equal to the longitudinal radius of curvature of the curved convex surface of each of the second side lens portions of the side lens bodies.

12. The goggle lens according to claim 1, further comprising: an upper lens body extending upward from the upper edge of the central lens body and the upper edge of the side lens body; and a lower lens body extending downward from the lower edge of the central lens body and the lower edge of the side lens body.

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