Plano presbyopic composite lens

Abstract

The invention discloses a plano presbyopic composite lens. The plano presbyopic composite lens comprises a lens body, the outer side surface of the lens body is smooth; a main plano-light curved surface, a left lower plano-light curved surface, a right lower plano-light curved surface and a presbyopic curved surface are arranged on the inner side of the lens body; the left lower plano-light curved surface, the right lower plano-light curved surface and the presbyopic curved surface are located below the main plano-light curved surface, and the left lower plano-light curved surface and the right lower plano-light curved surface are located on the left side and the right side of the presbyopic curved surface respectively; the area of the main plano-light curved surface is larger than the total area of the left lower plano-light curved surface, the right lower plano-light curved surface and the presbyopic curved surface. When the plano presbyopia composite lens is used, a presbyopia patient can see an object at a short distance and can see the object at a long distance, and the plano presbyopia composite lens is convenient for the presbyopia patient to use.

Description

Technical Field

[0001] The present invention relates to the field of lenses, and particularly to a plano presbyopia compound lens. Background Art

[0002] Presbyopia, also known as "visual acuity function decline disorder", is a disease caused by the degeneration of the eye lens that people are prone to in old age. Presbyopic patients have blurred vision at close range, but still have clear vision at a distance.

[0003] Currently, presbyopic patients generally correct their vision by wearing presbyopic glasses, so that they can see clearly at close range. However, for presbyopic patients, it is difficult to see clearly at a distance after wearing presbyopic glasses, and it is difficult to see clearly at close range after taking off the presbyopic glasses. Thus, when presbyopic patients need to perform operations that require both long-distance and short-distance vision, such as driving, presbyopic patients need to frequently take off and put on their presbyopic glasses or are unable to perform the operation, which needs to be improved.

[0004] In view of the above problems, it is necessary to study a plano presbyopia compound lens, which can enable presbyopic patients to see clearly at close range and also at a distance, facilitating the use of presbyopic patients. Summary of the Invention

[0005] The purpose of the present invention is to provide a plano presbyopia compound lens, which can enable presbyopic patients to see clearly at close range and also at a distance, facilitating the use of presbyopic patients.

[0006] To achieve the above object, the solution of the present invention is: A plano presbyopia compound lens, which includes a lens body; the outer side surface of the lens body is smoothly arranged; the inner side of the lens body is provided with a main plano surface, a lower left plano surface, a lower right plano surface and a presbyopia surface; the lower left plano surface, the lower right plano surface and the presbyopia surface are located below the main plano surface, and the lower left plano surface and the lower right plano surface are respectively located on the left and right sides of the presbyopia surface; the area of the main plano surface is larger than the total area of the lower left plano surface, the lower right plano surface and the presbyopia surface.

[0007] The centers of the lower left plano surface and the lower right plano surface are at the same point.

[0008] The lower left plano surface and the lower right plano surface are smoothly connected through a connecting plano surface, the connecting plano surface is located below the presbyopia surface, and the centers of the connecting plano surface, the lower left plano surface and the lower right plano surface are at the same point.

[0009] The included angle between the main plano surface and the presbyopia surface is 3° ± 0.5°.

[0010] The included angle between the main plano surface and the presbyopic surface is 3°.

[0011] The curvature radii of the main plano surface, the lower left plano surface, and the lower right plano surface are the same.

[0012] The curvature radius of the main plano surface is smaller than that of the presbyopic surface.

[0013] The curvature radius of the main plano surface is 116.22 mm, and the thickness of the lens body is 1.8 mm.

[0014] After adopting the above scheme, for the plano-presbyopic compound lens of the present invention, the parts of the lens body corresponding to the main plano surface and the lower left plano surface enable presbyopic patients to see distant objects, while the part of the lens body corresponding to the presbyopic surface enables presbyopic patients to see near objects. In this way, presbyopic patients can use the plano-presbyopic compound lens of the present invention to see both near and distant objects, which is convenient for presbyopic patients. Among them, the lower left plano surface, the lower right plano surface, and the presbyopic surface are located below the main plano surface, and the area of the main plano surface is larger than the total area of the lower left plano surface, the lower right plano surface, and the presbyopic surface. In this way, the part of the lens body corresponding to the main plano surface has a large area and can be located in the main horizontal viewing range of the human eye, which is convenient for presbyopic patients to view distant objects with a large field of view; while the lower left plano surface and the lower right plano surface are respectively located on the left and right sides of the presbyopic surface, which can facilitate presbyopic patients to view the lower left and lower right corners of the field of view, so as to facilitate presbyopic patients to view the left and right rearview mirrors of the car and facilitate presbyopic patients to drive a car. In addition, the outer side of the lens body is smoothly arranged (the outer side of the lens body can be made smooth by grinding), so that after the lens body is installed in the frame, the appearance integrity of the lens body is good, and the dividing line of the cut is not easily seen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of the present invention.

[0016] Figure 2 is the rear view of the present invention.

[0017] Figure 3 is the cross-sectional view of the present invention.

[0018] Reference Numeral Explanation: Lens body 1, main plano surface 11, lower left plano surface 12, lower right plano surface 13, presbyopic surface 14, connecting plano surface 15. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments.

[0020] Such asFigures 1 to 3 As shown in the figure, the present invention discloses a plano-presbyopia compound lens, which includes a lens body 1; wherein, the outer side surface of the lens body 1 is smoothly arranged; and the inner side of the lens body 1 is provided with a main plano surface 11, a lower left plano surface 12, a lower right plano surface 13 and a presbyopia surface 14; the lower left plano surface 12, the lower right plano surface 13 and the presbyopia surface 14 are located below the main plano surface 11, and the lower left plano surface 12 and the lower right plano surface 13 are respectively located on the left and right sides of the presbyopia surface 14; the area of the main plano surface 11 is larger than the total area of the lower left plano surface 12, the lower right plano surface 13 and the presbyopia surface 14.

[0021] For the plano-presbyopia compound lens of the present invention, the part of the lens body 1 corresponding to the main plano surface 11 and the lower left plano surface 12 enables presbyopic patients to see objects at a distance, while the part of the lens body 1 corresponding to the presbyopia surface 14 enables presbyopic patients to see objects at close range. In this way, presbyopic patients can use the plano-presbyopia compound lens of the present invention to see objects at close range and at a distance, which is convenient for presbyopic patients to use. Among them, the lower left plano surface 12, the lower right plano surface 13 and the presbyopia surface 14 are located below the main plano surface 11, and the area of the main plano surface 11 is larger than the total area of the lower left plano surface 12, the lower right plano surface 13 and the presbyopia surface 14. In this way, the area of the part of the lens body 1 corresponding to the main plano surface 11 is large and can be located in the main direct-view range of the human eye, which is convenient for presbyopic patients to see objects at a distance with a large field of view; and the lower left plano surface 12 and the lower right plano surface 13 are respectively located on the left and right sides of the presbyopia surface 14, which can facilitate presbyopic patients to view the lower left and lower right corners of the field of view, so as to facilitate presbyopic patients to view the left and right rearview mirrors of the car and facilitate presbyopic patients to drive a car. In addition, the outer side surface of the lens body 1 is smoothly arranged (the outer side surface of the lens body 1 can be made smooth by grinding), so that after the lens body 1 is installed in the frame, the appearance integrity of the lens body 1 is good and it is not easy to see the split boundary line.

[0022] In an embodiment of the present invention, in cooperation with Figure 3 As shown in the figure, the included angle A1 between the main plano surface 11 and the presbyopia surface 14 is 3° ± 0.5°; in this way, when viewing objects at close range (such as looking at a mobile phone or reading a book), the downward tilt angle of the eyeball is small and it is not easy to get tired. Preferably, the included angle A1 between the main plano surface 11 and the presbyopia surface 14 is 3° In an embodiment of the present invention, the lower left plano surface 12 and the lower right plano surface 13 can be smoothly connected through a connecting plano surface 15. The connecting plano surface 15 is located below the presbyopia surface 14, and the centers of the connecting plano surface 15, the lower left plano surface 12 and the lower right plano surface 13 are at the same point.

[0023] In an embodiment of the present invention, the curvature radii of the main plano-convex surface 11, the lower left plano-convex surface 12, and the lower right plano-convex surface 13 are the same; the curvature radius R1 of the main plano-convex surface 11 is less than the curvature radius R2 of the presbyopic surface 14. Specifically, the thickness T of the lens body 1H may be 1.8 mm, and the curvature radius R1 of the main plano-convex surface 11 may be 116.22 mm; while the curvature radius R2 of the presbyopic surface 14 is set differently according to different presbyopia degrees. For example, when the presbyopia degree is 200°, the curvature radius R2 of the presbyopic surface 14 may be 192.636 mm.

[0024] The above embodiments and diagrams do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the relevant technical field shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A plano presbyopic composite lens, characterized in that: The lens comprises a lens body; the outer side surface of the lens body is smoothly arranged; the inner side of the lens body is provided with a main plano curved surface, a lower left plano curved surface, a lower right plano curved surface and a presbyopic curved surface; the lower left plano curved surface, the lower right plano curved surface and the presbyopic curved surface are located below the main plano curved surface, and the lower left plano curved surface and the lower right plano curved surface are located on the left and right sides of the presbyopic curved surface respectively; the area of ​​the main plano curved surface is greater than the total area of ​​the lower left plano curved surface, the lower right plano curved surface and the presbyopic curved surface.

2. The plano presbyopic composite lens according to claim 1, characterized in that: The sphere centers of the lower left plano curved surface and the lower right plano curved surface are at the same point.

3. The plano presbyopic composite lens according to claim 1, characterized in that: The lower left flat curved surface and the lower right flat curved surface are smoothly connected by a connecting flat curved surface, the connecting flat curved surface is located below the presbyopic curved surface, and the centers of the connecting flat curved surface, the lower left flat curved surface and the lower right flat curved surface are at the same point.

4. The plano presbyopic composite lens according to claim 1, characterized in that: The angle between the main plano curved surface and the presbyopic curved surface is 3°±0.5°.

5. The plano presbyopic composite lens according to claim 4, characterized in that: The angle between the main plano curved surface and the presbyopic curved surface is 3°.

6. The plano presbyopic composite lens according to claim 1, characterized in that: The main plano curved surface, the lower left plano curved surface, and the lower right plano curved surface have the same curvature radius.

7. The plano presbyopic composite lens according to claim 1 or 6, characterized in that: The curvature radius of the main plano curved surface is smaller than the curvature radius of the presbyopic curved surface.

8. The plano presbyopic composite lens according to claim 1 or 6, characterized in that: The curvature radius of the main plano surface is 116.22 mm, and the thickness of the lens body is 1.8 mm.

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