CN110538052A

CN110538052A - eccentric ring focal lens

Info

Publication number: CN110538052A
Application number: CN201910822986.3A
Authority: CN
Inventors: 刘小利; 曾雪骢; 郝新厂
Original assignee: Changzhou Institute of Technology
Current assignee: Changzhou Institute of Technology
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2019-12-06

Abstract

The invention provides an eccentric ring focal lens, comprising: the eccentric ring focal lens comprises a central area and a plurality of annular belts which are sequentially and continuously distributed from the central area to the outside; both surfaces of the zone are part of a complete sphere, each zone having one diopter; both surfaces of the central region are part of a complete sphere; the main optical axis of the central area and the eccentric ring focal lens are intersected at a central point; the central point is arranged close to the edge of the eccentric ring focal lens; the eccentric ring focal lens comprises an effective area for cutting into a zoom lens; the intersection point of the main optical axis of the annular belt and the eccentric annular focal lens is located in the effective area, and the central point is also located in the effective area. Compared with the traditional annular-focus lens, the proportion of the effective area of the cutting zoom lens of the eccentric annular-focus lens to the whole lens is larger, and the diopter change range is also larger.

Description

Eccentric ring focal lens

Technical Field

the invention relates to the field of lenses, in particular to an eccentric ring focal lens.

Background

The more popular and the increased study pressure of the existing electronic equipment, the more and more time is spent on teenagers to read electronic screens and books every day, and the high-intensity eye use every day makes the teenagers have high eye pressure and easy fatigue, and a series of visual problems are brought for a long time before.

in response to this situation, various vision training devices have been designed to help teenagers relax their eyes and relieve eye strain. The current mainstream method is to apply the zoom lens to the wearable device, and when a user wears the wearable device, the lens in the eye of the wearer is adjusted to relax and exercise by moving the lens to make the eye correspond to the lens area with different diopter.

The present zoom lens adopts a circular ring focal lens, and then the ring focal lens is cut to form a lens for vision training, wherein the present circular ring focal lens has a plurality of annular bands, and the annular bands are in an annular shape concentric with the annular lens. The proportion of the effective area of the zoom lens cut out by the lens to the whole lens is small, and great waste is caused to the lens material.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the problem of material waste is caused in order to solve the proportion that the effective area of adopting traditional ring focus lens cutting zoom lens accounts for whole ring focus lens is less. The present invention provides an eccentric ring focal lens to solve the above problems.

The technical scheme adopted by the invention for solving the technical problems is as follows: an eccentric toric lens comprising:

The eccentric ring focal lens comprises a central area and a plurality of annular belts which are sequentially and continuously distributed from the central area to the outside; both surfaces of the zone are part of a complete sphere, each zone having one diopter; both surfaces of the central region are part of a complete sphere;

The main optical axis of the central area and the eccentric ring focal lens are intersected at a central point; the central point is arranged close to the edge of the eccentric ring focal lens;

The eccentric ring focal lens comprises an effective area for cutting into a zoom lens; the intersection point of the main optical axis of the annular belt and the eccentric annular focal lens is located in the effective area, and the central point is also located in the effective area.

Preferably, the effective region is long, and a plurality of the endless belts are sequentially distributed along the length direction of the effective region.

Preferably, the power of the zones closer to the central zone is greater, the power of the central zone being greater than the power of the innermost zone.

preferably, the diopter of the zone closer to the central region is smaller, and the diopter of the central region is smaller than the diopter of the innermost zone.

Preferably, the absolute value of the difference in diopter between each two adjacent zones is equal; the absolute value of the difference between the diopter of the central zone and the diopter of the innermost zone is equal to the absolute value of the difference between the diopter of each two adjacent zones.

Preferably, the absolute value of the difference in diopter between each two adjacent zones is 0.1 to 0.3D.

Preferably, the diopter of the central area is less than or equal to 0D, and the diopter of the zone is less than 0D.

Compared with the traditional annular-focus lens, the eccentric annular-focus lens has the advantages that the proportion of the effective area of the eccentric annular-focus lens for cutting the zoom lens to the whole lens is larger, and the diopter change range is larger.

Drawings

The invention is further illustrated with reference to the following figures and examples.

fig. 1 is a schematic structural view of a conventional ring focus lens.

FIG. 2 is a schematic structural diagram of an embodiment of an eccentric ring focal lens of the present invention.

FIG. 3 is a schematic structural diagram of another embodiment of an eccentric ring focal lens of the present invention.

in the figure, 1, an eccentric ring focal lens, 2, a central area, 3, an annular belt, 4 and an effective area.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

as shown in fig. 2 to 3, the present invention provides an eccentric ring focal lens, comprising:

The eccentric ring focal lens 1 comprises a central area 2 and a plurality of annular belts 3 which are distributed outwards from the central area 2 in sequence and continuously. Both surfaces of the central zone 2 are part of a complete sphere and both surfaces of the zone 3 are part of a complete sphere, each zone 3 having one diopter.

the eccentric ring focal lens 1 has an effective area 4 for cutting the zoom lens. The effective area 4 is long, and a plurality of annular belts 3 are distributed in sequence along the length direction of the effective area 4.

The main optical axis of the central area 2 intersects with the eccentric ring focal lens 1 at a central point, and the central point is arranged close to the edge of the eccentric ring focal lens 1. The intersection point of the main optical axis of the ring belt 3 and the eccentric ring focal lens 1 is positioned in the effective area 4, and the central point is positioned in the effective area 4.

The zoom lens is formed by cutting the ring focal lens, when the zoom lens is used, the zoom lens is arranged in front of the human eye, the human eye is enabled to adjust the shrinkage and the relaxation of the crystalline lens by moving the different ring belts 3 on the zoom lens, in order to see the object in front clearly through the zoom lens, the human eye can actively adjust the shrinkage and the relaxation of the crystalline lens, and the purposes of relaxing the human eye and exercising the crystalline lens are achieved.

As shown in fig. 1, a central area 2 of a conventional ring focal lens is provided at the center of a circular lens, and its ring zone 3 is formed in a ring shape concentric with the circular lens. Because the ring belts 3 on the two sides of the circle center of the traditional annular focal lens are symmetrical and have the same change range, most of the effective area 4 for cutting the zoom lens by adopting the traditional annular focal lens can only be positioned on one side of the circle center of the circular lens. This results in a small diopter change range in the effective area 4 and a low utilization of the entire ring-focus lens, resulting in material waste.

adopt the lens of the same size to make eccentric ring focus lens and traditional ring focus lens, the effective area 4's of cutting the zoom lens area in the eccentric ring focus lens is greater than the effective area 4's of traditional ring focus lens area, and the area of effective area 4 has become, so the number of tracks of cutting the clitellum 3 of the effective area 4 of zoom lens also becomes more, and the diopter change range of the effective area 4 of cutting the zoom lens has also become. Therefore, the eccentric ring focal lens is more material-saving and has better performance.

According to a further embodiment, the power of the zone 3 closer to the central zone 2 is greater, the power of the central zone 2 being greater than the power of the innermost zone 3.

According to a further embodiment, the diopter of the zone 3 closer to the central zone 2 is smaller, the diopter of the central zone 2 being smaller than the diopter of the innermost zone 3.

According to a further embodiment, the absolute value of the difference in diopters between each two adjacent zones 3 is equal. The absolute value of the difference in diopter of the central zone 2 from the innermost zone 3 is equal to the absolute value of the difference in diopter between each two adjacent zones 3. The absolute value of the difference in diopter between each two adjacent zones 3 is 0.2D.

According to a further embodiment, the diopter of the central zone 2 is equal to 0D and the diopter of the zone 3 is less than 0D (i.e. diopters are negative). The lens is suitable for myopia people.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An eccentric toroidal focal lens, comprising:

2. An eccentric toroidal focal lens as claimed in claim 1, wherein:

The effective area is microscler, multichannel the clitellum is followed the length direction of effective area distributes in proper order.

3. An eccentric rim lens as claimed in claim 2, wherein:

The greater the diopter of the zones closer to the central zone, the greater the diopter of the central zone is than the diopter of the innermost zone.

4. An eccentric rim lens as claimed in claim 2, wherein:

The diopter of the zones closer to the central zone is smaller, the diopter of the central zone being smaller than the diopter of the innermost zone.

5. An eccentric toroidal focal lens according to claim 3 or 4, wherein:

The absolute value of the difference in diopter between every two adjacent zones is equal; the absolute value of the difference between the diopter of the central zone and the diopter of the innermost zone is equal to the absolute value of the difference between the diopter of each two adjacent zones.

6. An eccentric rim lens according to claim 5, wherein:

the absolute value of the difference of diopters between every two adjacent annular bands is 0.1-0.3D.

7. An eccentric rim lens according to claim 6, wherein:

The diopter of the central area is less than or equal to 0D, and the diopter of the annular belt is less than 0D.