Free-form surface lens

Abstract

The utility model discloses a free-form surface lens and relates to the technical field of lenses, the number of free-form surface lens main bodies and the number of lens brackets are both symmetrically arranged, the close ends of the two lens brackets are integrally formed with connecting parts for connection, and the far ends of the two lens brackets are both provided with eye leg mounting parts. The glasses frame comprises a frame body connected with the edge of the free-form surface lens main body in a sleeving mode, the frame body comprises a metal strip and a plastic outer wrapping layer wrapping the metal strip, a limiting protruding strip is integrally formed on the inner side of the plastic outer wrapping layer, a limiting groove is formed in the edge of the free-form surface lens main body, and the limiting protruding strip is installed in the limiting groove. The opening end of the frame body is provided with a locking piece; the connecting parts are arranged at the close ends of the two spectacle frames, so that the two spectacle frames are connected through the connecting parts, and the spectacle leg mounting parts are arranged at the far ends of the two spectacle frames, so that spectacle legs can be conveniently mounted at the far ends of the two spectacle frames through the spectacle leg mounting parts, and the assembly of eyes is facilitated.

Description

Technical Field

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

[0002] Free-form surface technology is a technology used for processing asymmetric complex optical design surfaces. In recent years, this technology has been widely used in the international high-end eyeglass lens industry. The problem of limited field of view of free-form surface lenses has also been significantly improved.

[0003] Chinese patent CN216870959U discloses "a free-form surface lens, comprising a free-form surface lens body and a frame, the frame comprising a mounting frame A and a mounting frame B, two groups of square grooves being provided on one side of the mounting frame A, circular grooves being provided on one side of the inner wall of the square grooves, and the circular grooves all pass through the mounting frame A, two groups of connecting rods being fixedly connected on one side of the mounting frame B, circular grooves being provided on one side of the connecting rods, sliding grooves being provided on the inner wall of the circular grooves, and two groups of arc grooves being provided on the inner wall of the circular grooves". The mounting frame is composed of the mounting frame A and the mounting frame B, so that the mounting frame consists of three parts. However, the combined mounting frame has insufficient structural stability, which makes it easy for the lens to fall off due to deformation of the mounting frame when the user wears the glasses.

[0004] Based on this, a free-form lens with a frame and connecting parts integrally formed is designed. Utility Model Content

[0005] In response to the deficiencies in the prior art, the present invention provides the following technical solutions: a free-form surface lens, comprising a free-form surface lens main body, a frame being arranged on the outside of the free-form surface lens main body, two free-form surface lens main bodies and two frames being symmetrically arranged, the two frames being integrally formed with a connecting portion for connection at their proximal ends, and being provided with an eye leg mounting portion at their distal ends, the frame comprising a frame on which the edge of the free-form surface lens main body is sleeved, the frame comprising a metal strip and a plastic outer layer wrapped around the metal strip, a limiting convex strip being integrally formed on the inner side of the plastic outer layer, a limiting groove being provided on the edge of the free-form surface lens main body, and the limiting convex strip being installed in the limiting groove, and a locking member being installed at the open end of the frame.

[0006] As an improvement of the above technical solution, the locking member includes two joints fixed at both ends of the frame, one of which has an internal threaded sleeve fixed on its surface, and the other has a hole opened on its surface in which a screw is installed, and the end of the screw is screwed into the internal threaded sleeve.

[0007] As an improvement of the above technical solution, the connecting part includes a lower arc plate integrally formed at the lower part of the two frame openings, and an upper arc plate integrally formed at the upper part of the two frame openings. Bolt holes are provided at both ends of the upper arc plate, and the bolt holes are located above the screw.

[0008] As an improvement of the above technical solution, the lower arc plate and the upper arc plate have the same structure, and both the lower arc plate and the upper arc plate are composed of metal strips and plastic outer layers.

[0009] As an improvement to the above technical solution, the cross sections of the limiting groove and the limiting ridge are both arc-shaped.

[0010] Beneficial effects of the utility model:

[0011] 1. The two frames are connected by the connecting parts provided at the proximal ends of the two frames, and the eye leg mounting parts provided at the distal ends of the two frames facilitate the installation of the eye legs through the eye leg mounting parts at the distal ends of the two frames, thereby facilitating the assembly of the eyes. The frame is composed of a frame body, a limiting convex strip and a locking piece, which makes it convenient to lock the opening of the frame body through the locking piece, so that the frame body is fixed to the edge of the free-form lens body. The frame body is composed of a metal strip and a plastic outer layer, so that the plastic outer layer protects the metal strip provided inside, and the metal strip is used to form the plastic outer layer, thereby ensuring the stability of the frame structure. The limiting convex strip integrally formed on the inner side of the plastic outer layer is stuck in the limiting groove opened on the edge of the free-form lens body, thereby increasing the stability of the frame installed on the edge of the free-form lens body.

[0012] 2. Through the locking piece composed of a joint, an internal threaded sleeve and a screw, the two joints are fixed at both ends of the frame, so that the screw installed in the hole opened on one of the joints is screwed into the internal threaded sleeve, and the internal threaded sleeve is fixed on the other joint, thereby realizing the locking of the frame through the locking piece.

[0013] 3. The connection between the two frames is achieved through a connecting part consisting of a lower arc plate, an upper arc plate and bolt holes. The lower arc plate is used to connect the lower parts of the two frames, and the upper arc plate is used to connect the upper parts of the two frames. At the same time, the structures of the lower arc plate and the upper arc plate are the same, and the lower arc plate and the upper arc plate are both composed of metal strips and plastic outer layers, so that the metal strips of the lower arc plate and the upper arc plate are respectively welded and fixed to the metal strips of the frame, thereby increasing the stability of the frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0015] Figure 2 It is a partial cross-sectional structural diagram of the utility model;

[0016] Figure 3 for Figure 2 A magnified structural diagram at center A;

[0017] Figure 4 for Figure 3 The enlarged structure diagram at B in the middle;

[0018] Figure 5 for Figure 2 Enlarged structural diagram at point C in the middle.

[0019] Figure numerals: 1. Free-curved lens body; 11. Limiting groove; 2. Spectacle frame; 21. Frame; 211. Metal strip; 212. Plastic outer layer; 22. Joint; 23. Internally threaded sleeve; 24. Screw; 25. Limiting convex strip; 3. Connecting part; 31. Lower arc plate; 32. Upper arc plate; 33. Bolt hole; 4. Eye leg mounting part. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figure 1-5 The utility model provides a technical solution: a free-form surface lens, comprising a free-form surface lens main body 1, a frame 2 is arranged on the outside of the free-form surface lens main body 1, the free-form surface lens main body 1 and the frame 2 are symmetrically provided with two, the two frames 2 are integrally formed with a connecting portion 3 for connection near the end, and the two frames 2 are provided with an eye leg mounting portion 4 at the far end, the frame 2 comprises a frame 21 on which the edge of the free-form surface lens main body 1 is sleeved, the frame 21 comprises a metal strip 211, and a plastic outer layer 212 wrapped around the metal strip 211, a limiting convex strip 25 is integrally formed on the inner side of the plastic outer layer 212, a limiting groove 11 is provided on the edge of the free-form surface lens main body 1, and the limiting convex strip 25 is installed in the limiting groove 11, and a locking piece is installed at the open end of the frame 21.

[0022] In this embodiment, the two frames 2 are connected through the connecting part 3 provided at the near ends of the two frames 2, and the eye leg mounting parts 4 provided at the far ends of the two frames 2 facilitate the installation of the eye legs through the eye leg mounting parts 4 at the far ends of the two frames 2, thereby facilitating the assembly of the eyes. The frame 2 is composed of a frame body 21, a limiting ridge 25 and a locking piece, which makes it convenient to lock the opening of the frame body 21 through the locking piece, so that the frame body 21 is fixed to the edge of the free-curved lens body 1, and the frame body 21 is composed of a metal strip 211 and a plastic outer layer 212, so that the plastic outer layer 212 protects the metal strip 211 provided inside, and the metal strip 211 is used to form the plastic outer layer 212, thereby ensuring the stability of the structure of the frame 2, and the limiting ridge 25 integrally formed on the inner side of the plastic outer layer 212 is stuck in the limiting groove 11 opened on the edge of the free-curved lens body 1, thereby increasing the stability of the frame 2 installed on the edge of the free-curved lens body 1.

[0023] Specifically, the locking member includes two joints 22 fixed at both ends of the frame 21, wherein an internal threaded sleeve 23 is fixed on the surface of one joint 22, and a screw 24 is installed in a hole opened on the surface of the other joint 22, and the end of the screw 24 is screwed into the internal threaded sleeve 23.

[0024] In this embodiment, the two joints 22 are fixed at both ends of the frame 21 by a locking member consisting of a joint 22, an internally threaded sleeve 23 and a screw 24, so that the screw 24 installed in the hole opened in one of the joints 22 is screwed into the internally threaded sleeve 23, and the internally threaded sleeve 23 is fixed on the other joint 22, thereby achieving the locking of the frame 21 by the locking member.

[0025] Specifically, the connecting part 3 includes a lower arc plate 31 integrally formed at the lower part of the opening of the two frames 21, and an upper arc plate 32 integrally formed at the upper part of the opening of the two frames 21. Bolt holes 33 are provided at both ends of the upper arc plate 32, and the bolt holes 33 are located above the screw 24. The lower arc plate 31 and the upper arc plate 32 have the same structure, and both the lower arc plate 31 and the upper arc plate 32 are composed of a metal strip 211 and a plastic outer layer 212.

[0026] In this embodiment, the connection between the two frames 21 is achieved through the connection part 3 composed of a lower arc plate 31, an upper arc plate 32 and a bolt hole 33. The lower arc plate 31 is used to connect the lower parts of the two frames 21, and the upper arc plate 32 is used to connect the upper parts of the two frames 21. At the same time, the structures of the lower arc plate 31 and the upper arc plate 32 are the same, and the lower arc plate 31 and the upper arc plate 32 are both composed of a metal strip 211 and a plastic outer layer 212, so that the metal strips 211 of the lower arc plate 31 and the upper arc plate 32 are respectively welded and fixed to the metal strips 211 of the frame 21, thereby increasing the stability of the structure of the frame 2.

[0027] Specifically, the cross sections of the limiting groove 11 and the limiting ridge 25 are both arc-shaped.

[0028] In this embodiment, the limiting groove 11 and the limiting ridge 25 both have arc-shaped cross sections, which increase the stability of the frame 2 when installed on the edge of the free-curved lens body 1.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A free-form surface lens, comprising a free-form surface lens body (1), a frame (2) being provided on the outside of the free-form surface lens body (1), characterized in that: The free-curved surface lens body (1) and the frame (2) are both symmetrically provided with two, the two frames (2) are integrally formed with a connecting portion (3) for connection at the near end, and the two frames (2) are both provided with an eye leg mounting portion (4) at the far end, the frame (2) comprises a frame (21) sleeved on the edge of the free-curved surface lens body (1), the frame (21) comprises a metal strip (211) and a plastic outer layer (212) wrapped around the metal strip (211), a limiting convex strip (25) is integrally formed on the inner side of the plastic outer layer (212), a limiting groove (11) is provided on the edge of the free-curved surface lens body (1), and the limiting convex strip (25) is installed in the limiting groove (11), and a locking member is installed at the open end of the frame (21).

2. The free-form surface lens according to claim 1, characterized in that: The locking member comprises two joints (22) fixed at both ends of the frame (21), wherein an internal threaded sleeve (23) is fixed on the surface of one of the joints (22), and a screw (24) is installed in a hole provided in the surface of the other joint (22), and the end of the screw (24) is screwed into the internal threaded sleeve (23).

3. The free-form surface lens according to claim 2, characterized in that: The connecting portion (3) comprises a lower arc plate (31) integrally formed at the lower portion of the openings of the two frames (21), and an upper arc plate (32) integrally formed at the upper portion of the openings of the two frames (21). Bolt holes (33) are provided at both ends of the upper arc plate (32), and the bolt holes (33) are located above the screw rod (24).

4. The free-form surface lens according to claim 3, wherein: The lower arc plate (31) and the upper arc plate (32) have the same structure, and both the lower arc plate (31) and the upper arc plate (32) are composed of a metal strip (211) and a plastic outer layer (212).

5. The free-form surface lens according to claim 1, characterized in that: The cross sections of the limiting groove (11) and the limiting convex strip (25) are both arc-shaped.

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