Liquid crystal fresnel lens

Abstract

The utility model discloses a liquid crystal fresnel lens concretely relates to the technical field of fresnel lens, including lens main part, the outside of lens main part is provided with protection subassembly, and the protection subassembly includes the installation frame, and the side of installation frame is provided with the installation side board, and the middle of installation side board is provided with the threaded connection hole, and the middle of the side wall of installation frame is provided with the mounting seat, and the middle of mounting seat is provided with the threaded connecting rod and rotation handle, and one end of threaded connecting rod is provided with the limit ring, and the outside of limit ring is provided with rubber protection ring. The utility model discloses a protection subassembly that is set up realizes the protection to lens main part, and the installation frame and rubber protection ring that are set up are set up in the outside of lens main part, and rotation handle and threaded connecting rod rotate, make threaded connecting rod drive limit ring rotate in the T shape limit slot of the outer wall of rubber protection ring, thereby limit ring realizes the ejection of rubber protection ring, realizes the positioning clamping of lens main part.

Description

Technical Field

[0001] This utility model relates to the field of Fresnel lens technology, and more specifically, to a liquid crystal Fresnel lens. Background Technology

[0002] Fresnel lenses, also known as threaded lenses, are mostly thin sheets made of polyolefin material by injection molding, but some are made of glass. One side of the lens surface is smooth, while the other side is engraved with concentric circles of varying sizes. Its texture is designed based on light interference and scattering, as well as relative sensitivity and receiving angle requirements. Its working principle is very simple: assuming that the refractive energy of a lens only occurs on the optical surface (e.g., the lens surface), remove as much optical material as possible while retaining the curvature of the surface.

[0003] However, existing lenses offer poor protection. When dropped or bumped, the front and sides of the lens directly contact the ground, which can easily damage the lens and shorten its lifespan. Therefore, there is a need to provide a liquid crystal Fresnel lens to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a liquid crystal Fresnel lens, which protects the lens body by providing a protective component that is sleeved on the outside of the lens body.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a liquid crystal Fresnel lens, comprising a lens body, wherein a protective component is disposed on the outside of the lens body;

[0006] The protective component includes a mounting frame, which has a slot and a through slot in the middle, and a mounting side plate on the side of the mounting frame. The mounting side plate has a threaded connection hole in the middle, and a mounting seat is provided in the middle of the side wall of the mounting frame. The mounting seat has a threaded connecting rod and a rotating handle in the middle. One end of the threaded connecting rod has a limit ring, and a rubber protective ring is provided on the outside of the limit ring. A T-shaped limit groove is provided on the outer wall of the rubber protective ring.

[0007] Furthermore, the mounting frame has a slot in the middle, and the slot is L-shaped. The lens body is snapped into the inside of the slot. The mounting frame has a through groove in the middle, and the through groove passes through the slot. The inner wall of the slot near the through groove is in contact with the outer wall of the lens body.

[0008] Furthermore, a mounting side plate is fixedly connected to the side of the mounting frame away from the lens body, and a through groove passes through the middle of the mounting side plate. A threaded connection hole is opened on one side of the mounting side plate. There are multiple threaded connection holes, which are evenly distributed in the middle of the mounting side plate and pass through the mounting side plate.

[0009] Furthermore, four mounting seats are fixedly connected to the side wall of the mounting frame, which are symmetrically distributed in the middle of the side wall of the mounting frame. A threaded connecting rod is threadedly connected to the middle of the mounting seat, and the threaded connecting rod passes through the middle of the side wall between the mounting seat and the slot. One end of the threaded connecting rod is connected to the inside of the slot. There are four threaded connecting rods, which are symmetrically distributed in the middle of the side wall of the mounting frame, and the threaded connecting rods are correspondingly set with the mounting seats.

[0010] Furthermore, a rotating handle is fixedly connected to the end of the threaded connecting rod away from the slot, and the rotating handle is located outside the mounting frame. The rotating handle is correspondingly arranged with the threaded connecting rod, and an anti-slip groove is provided on the outer wall of the rotating handle. There are multiple anti-slip grooves, which are evenly distributed on the outer wall of the rotating handle. A limit ring is fixedly connected to the end of the threaded connecting rod away from the rotating handle, and the limit ring is located inside the mounting frame.

[0011] Furthermore, a rubber protective ring is fitted around the outside of the limiting ring, and the side of the rubber protective ring contacts the inner wall of the mounting frame. The rubber protective ring is located between the mounting frame and the lens body, and the inner wall of the rubber protective ring is in close contact with the outer surface of the lens body. A T-shaped limiting groove is formed on the outer wall of the rubber protective ring, and there are four T-shaped limiting grooves, which are symmetrically distributed on the outer wall of the rubber protective ring. The limiting ring is slidably connected inside the T-shaped limiting groove.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention protects the lens body through a protective assembly. A mounting frame and a rubber protective ring are fitted over the lens body. Rotating the handle and threaded connecting rod causes the threaded connecting rod to rotate a limiting ring within a T-shaped limiting groove on the outer wall of the rubber protective ring. This pushes the limiting ring out of the rubber protective ring, achieving positioning and clamping of the lens body, improving its stability, preventing it from falling off and affecting its lifespan. Furthermore, the rubber protective ring protects the lens body and reduces damage caused by the clamping end. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 This is a first-view structural diagram of the overall device of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall second-view structure of the device of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the protective component and lens of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the protective component of this utility model.

[0020] The attached figures are labeled as follows: 1. Lens body; 2. Protective component; 3. Mounting frame; 4. Slot; 5. Through slot; 6. Mounting side plate; 7. Threaded connection hole; 8. Rubber protective ring; 9. T-shaped limiting groove; 10. Mounting base; 11. Rotating handle; 12. Threaded connecting rod; 13. Limiting ring; 14. Anti-slip groove. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This utility model provides a liquid crystal Fresnel lens, including a lens body 1, and a protective component 2 is provided on the outside of the lens body 1;

[0023] The protective component 2 includes a mounting frame 3. The mounting frame 3 has a slot 4 and a through slot 5 in its center. A mounting side plate 6 is provided on the side of the mounting frame 3, and a threaded connection hole 7 is provided in the center of the mounting side plate 6. A mounting base 10 is provided in the center of the side wall of the mounting frame 3, and a threaded connecting rod 12 and a rotating handle 11 are provided in the center of the mounting base 10. A limit ring 13 is provided at one end of the threaded connecting rod 12, and a rubber protective ring 8 is provided on the outside of the limit ring 13. A T-shaped limit groove 9 is provided on the outer wall of the rubber protective ring 8. The mounting frame 3 has a central opening... There is a slot 4, which is L-shaped. The lens body 1 is snapped into the inside of the slot 4. A through groove 5 is opened in the middle of the mounting frame 3, and the through groove 5 passes through the slot 4. The inner wall of the slot 4 near the through groove 5 is in contact with the outer wall of the lens body 1. A mounting side plate 6 is fixedly connected to the side of the mounting frame 3 away from the lens body 1, and the through groove 5 passes through the middle of the mounting side plate 6. A threaded connection hole 7 is opened on one side of the mounting side plate 6. There are multiple threaded connection holes 7, which are evenly distributed in the middle of the mounting side plate 6 and pass through the mounting side plate 6.

[0024] The mounting side plate 6 has a threaded connection hole 7 in the middle, which facilitates the installation of the device. The mounting frame 3 and the mounting side plate 6 are connected by a through groove 5, which reduces the impact of the mounting frame 3 on the lens body 1 during installation and improves the protection effect. The lens body 1 is snapped into the inside of the slot 4, which realizes simple protection for the lens body 1.

[0025] Mounting bases 10 are fixedly connected to the side wall of mounting frame 3. There are four mounting bases 10, which are symmetrically distributed in the middle of the side wall of mounting frame 3. A threaded connecting rod 12 is threadedly connected to the middle of the mounting base 10. The threaded connecting rod 12 passes through the middle of the side wall between the mounting base 10 and the slot 4. One end of the threaded connecting rod 12 is connected to the inside of the slot 4. There are four threaded connecting rods 12, which are symmetrically distributed in the middle of the side wall of mounting frame 3. The threaded connecting rod 12 is correspondingly set with the mounting base 10. A rotating handle 11 is fixedly connected to the end of the threaded connecting rod 12 away from the slot 4. The rotating handle 11 is located in the mounting frame. Externally, the rotating handle 11 and the threaded connecting rod 12 are correspondingly arranged, and the outer wall of the rotating handle 11 is provided with anti-slip grooves 14. There are multiple anti-slip grooves 14, which are evenly distributed on the outer wall of the rotating handle 11. The end of the threaded connecting rod 12 away from the rotating handle 11 is fixedly connected to a limiting ring 13, and the limiting ring 13 is located inside the mounting frame 3. A rubber protective ring 8 is sleeved on the outside of the limiting ring 13, and the side of the rubber protective ring 8 is in contact with the inner wall of the mounting frame 3. The rubber protective ring 8 is located between the mounting frame 3 and the lens body 1, and the inner wall of the rubber protective ring 8 is in close contact with the outer surface of the lens body 1.

[0026] The outer wall of the rubber protective ring 8 is provided with four T-shaped limiting grooves 9, which are symmetrically distributed on the outer wall of the rubber protective ring 8. The limiting ring 13 is slidably connected inside the T-shaped limiting groove 9. The protective component 2 is provided to protect the lens body 1. The mounting frame 3 is provided to fit the rubber protective ring 8 on the outside of the lens body 1. Rotating the rotating handle 11 and the threaded connecting rod 12 causes the threaded connecting rod 12 to drive the limiting ring 13 to rotate inside the T-shaped limiting groove 9 on the outer wall of the rubber protective ring 8. Thus, the limiting ring 13 pushes out of the rubber protective ring 8, realizes the positioning and clamping of the lens body 1, improves the stability of the lens body 1, prevents the lens body 1 from falling off and affecting the service life of the lens body 1, and the rubber protective ring 8 provides protection for the lens body 1, reducing the damage caused to the lens body 1 by the clamping end.

[0027] The lens body 1 is snapped into the slot 4, so that the outer wall of the lens body 1 contacts the inner wall of the rubber protective ring 8. The rubber protective ring 8 is located between the lens body 1 and the mounting frame 3. Then, the rotating handle 11 is rotated. The outer wall of the rotating handle 11 is provided with an anti-slip groove 14 to prevent the rotating handle 11 from sliding during use and affecting the rotation effect. The rotating handle 11 drives the threaded connecting rod 12 to rotate. The threaded connecting rod 12 pushes out along the middle of the mounting base 10 towards the inside of the slot 4 through the thread. The end of the threaded connecting rod 12 away from the rotating handle 11 pushes out the limiting ring 13, so that the limiting ring 13 rotates inside the T-shaped limiting groove 9. At the same time, the limiting ring 13 squeezes the rubber protective ring 8, thereby achieving positioning and clamping of the lens body 1. The rubber protective ring 8 is located between the limiting ring 13 and the lens body 1, which protects the lens body 1 and increases the friction at the clamping end, thereby improving the protective effect of the device on the lens body 1.

[0028] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A liquid crystal Fresnel lens, comprising a lens body (1), characterized in that: The lens body (1) is provided with a protective component (2) on its exterior. The protective component (2) includes a mounting frame (3), in which a slot (4) and a through slot (5) are provided in the middle, and a mounting side plate (6) is provided on the side of the mounting frame (3). A threaded connection hole (7) is provided in the middle of the mounting side plate (6). A mounting seat (10) is provided in the middle of the side wall of the mounting frame (3), and a threaded connecting rod (12) and a rotating handle (11) are provided in the middle of the mounting seat (10). A limit ring (13) is provided at one end of the threaded connecting rod (12), and a rubber protective ring (8) is provided on the outside of the limit ring (13). A T-shaped limit groove (9) is provided on the outer wall of the rubber protective ring (8).

2. A liquid crystal Fresnel lens according to claim 1, characterized in that: The mounting frame (3) has a slot (4) in the middle, and the slot (4) is L-shaped. The lens body (1) is snapped into the inside of the slot (4). The mounting frame (3) has a through groove (5) in the middle, and the through groove (5) passes through the slot (4). The inner wall of the slot (4) near the through groove (5) is in contact with the outer wall of the lens body (1).

3. A liquid crystal Fresnel lens according to claim 2, characterized in that: The mounting frame (3) is fixedly connected to a mounting side plate (6) on the side away from the lens body (1), and the through groove (5) passes through the middle of the mounting side plate (6). A threaded connection hole (7) is provided on one side of the mounting side plate (6). There are multiple threaded connection holes (7), which are evenly distributed in the middle of the mounting side plate (6). The threaded connection hole (7) passes through the mounting side plate (6).

4. A liquid crystal Fresnel lens according to claim 2, characterized in that: The mounting frame (3) has four mounting seats (10) fixedly connected to its side wall. The mounting seats (10) are symmetrically distributed in the middle of the side wall of the mounting frame (3). The middle of the mounting seat (10) is connected by a threaded connecting rod (12). The threaded connecting rod (12) passes through the middle of the side wall between the mounting seat (10) and the slot (4). One end of the threaded connecting rod (12) is connected to the inside of the slot (4). There are four threaded connecting rods (12), which are symmetrically distributed in the middle of the side wall of the mounting frame (3). The threaded connecting rod (12) and the mounting seat (10) are correspondingly set.

5. A liquid crystal Fresnel lens according to claim 4, characterized in that: The threaded connecting rod (12) is fixedly connected to a rotating handle (11) at one end away from the slot (4), and the rotating handle (11) is located outside the mounting frame (3). The rotating handle (11) is correspondingly set with the threaded connecting rod (12), and an anti-slip groove (14) is provided on the outer wall of the rotating handle (11). There are multiple anti-slip grooves (14), which are evenly distributed on the outer wall of the rotating handle (11). A limiting ring (13) is fixedly connected to one end of the threaded connecting rod (12) away from the rotating handle (11), and the limiting ring (13) is located inside the mounting frame (3).

6. A liquid crystal Fresnel lens according to claim 5, characterized in that: The limiting ring (13) is fitted with a rubber protective ring (8) on its outside, and the side of the rubber protective ring (8) is in contact with the inner wall of the mounting frame (3). The rubber protective ring (8) is located between the mounting frame (3) and the lens body (1), and the inner wall of the rubber protective ring (8) is in close contact with the outer surface of the lens body (1). The outer wall of the rubber protective ring (8) is provided with a T-shaped limiting groove (9), and there are four T-shaped limiting grooves (9), which are symmetrically distributed on the outer wall of the rubber protective ring (8). The limiting ring (13) is slidably connected inside the T-shaped limiting groove (9).

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