Fresnel lens structure

Abstract

The utility model discloses a Fresnel lens structure, and particularly relates to the technical field of Fresnel lenses, the Fresnel lens structure comprises a convex lens body, the outside of the convex lens body is provided with a functional assembly used for enhancing the refractive index; the functional assembly comprises a first convex ridge, a second convex ridge, a third convex ridge, a fourth convex ridge, a fifth convex ridge and a sixth convex ridge, and the height of the first convex ridge is smaller than that of the second convex ridge. According to the utility model, through the first convex ridge, the second convex ridge, the third convex ridge, the fourth convex ridge, the fifth convex ridge and the sixth convex ridge which are sequentially nested and distributed from inside to outside, all-directional and large-area refraction processing can be carried out on light rays, and the refraction efficiency of the light rays is improved; and by virtue of the first convex ridge, the second convex ridge, the third convex ridge, the fourth convex ridge, the fifth convex ridge and the sixth convex ridge which are sequentially and progressively increased in height from inside to outside, the overall formed layering sense is stronger, the light emitting effect is further improved, and the integration and concentration of light are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of Fresnel lenses, in particular to a Fresnel lens structure. Background Art

[0002] Fresnel lenses are mostly thin sheets made of polyolefin materials. One side of the lens surface is smooth, and the other side is engraved with concentric circles from small to large. Its texture is designed based on the interference and disturbance of light and the requirements of relative sensitivity and receiving angle. The requirements for lenses are very high. A high-quality lens must have a smooth surface and clear texture. Its thickness varies with its use. It has been used in some aspects for its advantages of being light, thin and low-priced.

[0003] As shown in the application document with the prior art publication number CN217639614U, it includes a lens body, one side of the lens body is a light-entering surface, the light-entering surface has multiple circles of Fresnel rings, the cross-sections of the multiple circles of Fresnel rings are all serrated, and the multiple circles of Fresnel rings are concentrically arranged, the other side of the lens body is a light-emitting surface, the light-emitting surface is set to a smooth plane, and the thickness range of the lens body is set to 0.17-0.2mm. This technical solution has the effect of reducing the thickness of the lens while meeting the light effect, thereby meeting the demand for increasingly compact mobile phone appearance.

[0004] However, the height of the Fresnel rings in the above technical solution is consistent, resulting in a small light refraction surface and low refraction efficiency, which will affect the use effect of the Fresnel lens. Utility Model Content

[0005] To this end, an embodiment of the utility model provides a Fresnel lens structure to solve the problem in the prior art that the light refraction surface is small and the refraction efficiency is low due to the uniform height of the Fresnel rings.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solution: a Fresnel lens structure, comprising a convex lens body, wherein a functional component for enhancing the refractive index is provided outside the convex lens body;

[0007] The functional component includes a first ridge, a second ridge, a third ridge, a fourth ridge, a fifth ridge and a sixth ridge, the height of the first ridge is less than the height of the second ridge, the height of the second ridge is less than the height of the third ridge, the height of the third ridge is less than the height of the fourth ridge, the height of the fourth ridge is less than the height of the fifth ridge, and the height of the fifth ridge is less than the height of the sixth ridge.

[0008] Furthermore, the outer diameter of the first ridge is smaller than the outer diameter of the second ridge, the outer diameter of the second ridge is smaller than the outer diameter of the third ridge, the outer diameter of the third ridge is smaller than the outer diameter of the fourth ridge, the outer diameter of the fourth ridge is smaller than the outer diameter of the fifth ridge, and the outer diameter of the fifth ridge is smaller than the outer diameter of the sixth ridge. By setting the outer diameter of the first ridge to be smaller than the outer diameter of the second ridge, the outer diameter of the second ridge to be smaller than the outer diameter of the third ridge, the outer diameter of the third ridge to be smaller than the outer diameter of the fourth ridge, the outer diameter of the fourth ridge to be the outer diameter of the fifth ridge, and the outer diameter of the fifth ridge to be the outer diameter of the sixth ridge, light can be refracted in an all-round and large-area manner, thereby improving the efficiency of light integration.

[0009] Furthermore, a first refractive interval is provided between the first convex ridge and the convex lens body, and the first refractive interval is set to be annular. Through the setting of the first refractive interval, light can be refracted.

[0010] Furthermore, a second refractive interval is provided between the first convex ridge and the second convex ridge, and the second refractive interval is set to be annular. By opening the second refractive interval between the first convex ridge and the second convex ridge, the light scattered by the convex lens body can be refracted.

[0011] Furthermore, a third refractive interval is provided between the second convex ridge and the third convex ridge, and the third refractive interval is set in a ring shape. Through the setting of the third refractive interval, light with a diameter larger than the second refractive interval can be refracted.

[0012] Furthermore, a fourth refractive interval is provided between the third convex ridge and the fourth convex ridge, and the fourth refractive interval is provided in a ring shape. Through the provision of the fourth refractive interval, light can be integrated and focused.

[0013] Furthermore, a fifth refractive interval is provided between the fourth convex ridge and the fifth convex ridge, and the fifth refractive interval is set to be annular. Through the distribution of the fifth refractive interval, the light at the scattered position can be guided to the fifth convex ridge for refraction processing.

[0014] Furthermore, a sixth refractive interval is provided between the fifth ridge and the sixth ridge, and the sixth refractive interval is arranged in a ring shape. Through the distribution of the sixth refractive interval, the light scattered by the convex lens body can be guided to the sixth ridge for refraction.

[0015] Furthermore, a sealing ring is provided on the outside of the convex lens body, a positioning ring is installed inside the sealing ring, the positioning ring is sleeved on the outside of the convex lens body, a positioning ring groove is provided on the side of the convex lens body close to the positioning ring, and the positioning ring is arranged inside the positioning ring groove. By setting the sealing ring, the sealing performance of the convex lens body during installation can be enhanced, thereby ensuring the use effect of the convex lens body.

[0016] The utility model embodiment has the following advantages:

[0017] By nesting the first ridge, the second ridge, the third ridge, the fourth ridge, the fifth ridge and the sixth ridge in sequence from the inside to the outside, the light can be refracted in an all-round and large-area manner to improve the refraction efficiency of the light, and with the help of the first ridge, the second ridge, the third ridge, the fourth ridge, the fifth ridge and the sixth ridge which are arranged in increasing height from the inside to the outside, the overall sense of layering is made stronger, further improving the light output effect, thereby realizing the integration and concentration of light. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the convex lens body of the utility model;

[0022] Figure 3 This is a top view of the convex lens body of the utility model;

[0023] Figure 4 This is a front view of the convex lens body of the utility model;

[0024] Figure 5 This is a cross-sectional view of the first ridge of the utility model.

[0025] In the figure: 1, first convex ridge; 2, second convex ridge; 3, third convex ridge; 4, fourth convex ridge; 5, fifth convex ridge; 6, sixth convex ridge; 7, first refractive interval; 8, second refractive interval; 9, third refractive interval; 10, fourth refractive interval; 11, fifth refractive interval; 12, sixth refractive interval; 13, sealing ring; 14, positioning ring; 15, positioning ring groove; 16, convex lens body. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Refer to the instruction manual Figure 1-5 The utility model provides a Fresnel lens structure, comprising a convex lens body 16, wherein a functional component for enhancing the refractive index is provided outside the convex lens body 16;

[0028] like Figure 1 , 3 , 4 and 5, the functional component includes a first ridge 1, a second ridge 2, a third ridge 3, a fourth ridge 4, a fifth ridge 5 and a sixth ridge 6, the height of the first ridge 1 is less than the height of the second ridge 2, the height of the second ridge 2 is less than the height of the third ridge 3, the height of the third ridge 3 is less than the height of the fourth ridge 4, the height of the fourth ridge 4 is less than the height of the fifth ridge 5, the height of the fifth ridge 5 is less than the height of the sixth ridge 6, the outer diameter of the first ridge 1 is less than the outer diameter of the second ridge 2, the outer diameter of the second ridge 2 is less than the outer diameter of the third ridge 3, The outer diameter of the third ridge 3 is smaller than the outer diameter of the fourth ridge 4, the outer diameter of the fourth ridge 4 is smaller than the outer diameter of the fifth ridge 5, and the outer diameter of the fifth ridge 5 is smaller than the outer diameter of the sixth ridge 6. By setting the outer diameter of the first ridge 1 to be smaller than the outer diameter of the second ridge 2, the outer diameter of the second ridge 2 to be smaller than the outer diameter of the third ridge 3, the outer diameter of the third ridge 3 to be smaller than the outer diameter of the fourth ridge 4, the outer diameter of the fourth ridge 4 to be the outer diameter of the fifth ridge 5, and the outer diameter of the fifth ridge 5 to be the outer diameter of the sixth ridge 6, the light can be refracted in an all-round and large-area manner, thereby improving the efficiency of light integration.

[0029] like Figure 1 , 3As shown in Figure 5, a first refractive interval 7 is provided between the first convex ridge 1 and the convex lens body 16, and the first refractive interval 7 is set in an annular shape. By setting the first refractive interval 7, light can be refracted. A second refractive interval 8 is provided between the first convex ridge 1 and the second convex ridge 2, and the second refractive interval 8 is set in an annular shape. By opening the second refractive interval 8 between the first convex ridge 1 and the second convex ridge 2, light scattered from the convex lens body 16 can be refracted. A third refractive interval 9 is provided between the second convex ridge 2 and the third convex ridge 3, and the third refractive interval 9 is set in an annular shape. By setting the third refractive interval 9, light larger than the second refractive interval 8 can be refracted. A fourth refractive interval 10 is provided between the third convex ridge 3 and the fourth convex ridge 4, and the fourth refractive interval 10 is set to be annular. Through the setting of the fourth refractive interval 10, the light can be integrated and gathered. A fifth refractive interval 11 is provided between the fourth convex ridge 4 and the fifth convex ridge 5, and the fifth refractive interval 11 is set to be annular. Through the distribution of the fifth refractive interval 11, the scattered light can be guided to the fifth convex ridge 5 for refracting. A sixth refractive interval 12 is provided between the fifth convex ridge 5 and the sixth convex ridge 6, and the sixth refractive interval 12 is set to be annular. Through the distribution of the sixth refractive interval 12, the light scattered by the convex lens body 16 can be guided to the sixth convex ridge 6 for refracting.

[0030] like Figure 1 , 2 As shown in Figure 5, a sealing ring 13 is sleeved on the outside of the convex lens body 16, and a positioning ring 14 is installed inside the sealing ring 13. The positioning ring 14 is sleeved on the outside of the convex lens body 16. A positioning ring groove 15 is opened on the side of the convex lens body 16 close to the positioning ring 14, and the positioning ring 14 is arranged inside the positioning ring groove 15. Through the provision of the sealing ring 13, the sealing performance of the convex lens body 16 during installation can be enhanced, thereby ensuring the use effect of the convex lens body 16.

[0031] After the light passes through the convex lens body 16, it can be diverged to form a surface light source to a certain extent, making the light softer, and then the first ridge 1, the second ridge 2, the third ridge 3, the fourth ridge 4, the fifth ridge 5 and the sixth ridge 6 are nested and distributed from the inside to the outside, so that the light can be refracted in all directions and over a large area, thereby improving the refraction efficiency of the light, and with the help of the first ridge 1, the second ridge 2, the third ridge 3, the fourth ridge 4, the fifth ridge 5 and the sixth ridge 6, which are arranged in increasing height from the inside to the outside, the overall sense of hierarchy is made stronger, and the light output effect is further improved, thereby realizing the integration and concentration of light, and improving the practicality of the utility model.

[0032] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A Fresnel lens structure, comprising a convex lens body (16), characterized in that: The convex lens body (16) is provided with a functional component for enhancing the refractive index on the outside; The functional component comprises a first ridge (1), a second ridge (2), a third ridge (3), a fourth ridge (4), a fifth ridge (5) and a sixth ridge (6); the height of the first ridge (1) is smaller than the height of the second ridge (2); the height of the second ridge (2) is smaller than the height of the third ridge (3); the height of the third ridge (3) is smaller than the height of the fourth ridge (4); the height of the fourth ridge (4) is smaller than the height of the fifth ridge (5); and the height of the fifth ridge (5) is smaller than the height of the sixth ridge (6).

2. A Fresnel lens structure according to claim 1, characterized in that: The outer diameter of the first ridge (1) is smaller than the outer diameter of the second ridge (2), the outer diameter of the second ridge (2) is smaller than the outer diameter of the third ridge (3), the outer diameter of the third ridge (3) is smaller than the outer diameter of the fourth ridge (4), the outer diameter of the fourth ridge (4) is smaller than the outer diameter of the fifth ridge (5), and the outer diameter of the fifth ridge (5) is smaller than the outer diameter of the sixth ridge (6).

3. The Fresnel lens structure according to claim 1, characterized in that: A first refractive interval (7) is provided between the first convex ridge (1) and the convex lens body (16), and the first refractive interval (7) is provided in a ring shape.

4. The Fresnel lens structure according to claim 1, characterized in that: A second refractive interval (8) is provided between the first convex ridge (1) and the second convex ridge (2), and the second refractive interval (8) is designed to be annular.

5. The Fresnel lens structure according to claim 1, characterized in that: A third refractive interval (9) is provided between the second convex ridge (2) and the third convex ridge (3), and the third refractive interval (9) is provided in a ring shape.

6. The Fresnel lens structure according to claim 1, characterized in that: A fourth refractive interval (10) is provided between the third convex ridge (3) and the fourth convex ridge (4), and the fourth refractive interval (10) is provided in a ring shape.

7. The Fresnel lens structure according to claim 1, characterized in that: A fifth refractive interval (11) is provided between the fourth convex ridge (4) and the fifth convex ridge (5), and the fifth refractive interval (11) is provided in a ring shape.

8. The Fresnel lens structure according to claim 1, characterized in that: A sixth refractive interval (12) is provided between the fifth convex ridge (5) and the sixth convex ridge (6), and the sixth refractive interval (12) is provided in a ring shape.

9. The Fresnel lens structure according to claim 1, characterized in that: The convex lens body (16) is sleeved with a sealing ring (13) on the outside, and a positioning ring (14) is installed inside the sealing ring (13). The positioning ring (14) is sleeved on the outside of the convex lens body (16). A positioning ring groove (15) is formed on one side of the convex lens body (16) close to the positioning ring (14), and the positioning ring (14) is arranged inside the positioning ring groove (15).

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