An optical lens and metal tube shell glass solder positioning welding structure

Abstract

The utility model provides a kind of glass solder positioning welding structure of optical lens and metal tube shell, including metal tube shell and the glass solder and optical lens located in metal tube shell, glass solder is located above optical lens, further include the metal ring located in metal tube shell, the glass solder is located between optical lens and metal ring, metal ring is used to melt after the glass solder of being heated and is limited in the range of the edge outside the middle circular hole of metal ring below metal ring and flows;The glass solder positioning welding structure of this optical lens and metal tube shell can solve the problem that glass solder is disorderly flowed, difficult to fill gap, improve the controllability and reliability of welding.

Description

Technical Field

[0001] This utility model relates to the field of optical device packaging technology, specifically to a glass solder positioning and welding structure for an optical lens and a metal tube shell. Background Technology

[0002] In the packaging process of optical devices, glass solder is often used to weld and seal the optical lens to the metal casing. In traditional welding structures, such as... Figure 1-2 As shown, when the product is placed in a high-temperature furnace, the glass solder 2, after reaching its melting point, will roll randomly on the contact surface between the optical lens 3 and the metal shell 1. Since the contact surfaces of the optical lens 3, the metal shell 1, and the glass solder 2 are on the same plane, the force acting on the rolling direction of the glass solder 2 is difficult to control, resulting in its disordered flow on the plane. This makes it difficult to control the rolling area of ​​the glass solder 2, and also makes it difficult for the glass solder 2 to roll into the gap between the optical lens 3 and the metal shell 1, severely affecting the welding quality and the performance of the optical device, resulting in significant defects. Utility Model Content

[0003] The purpose of this invention is to provide a glass solder positioning and welding structure for an optical lens and a metal tube shell, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution used in this utility model is as follows: A glass solder positioning and welding structure for an optical lens and a metal shell includes a metal shell, glass solder and an optical lens located inside the metal shell, the glass solder being located above the optical lens, and a metal ring located inside the metal shell, the glass solder being located between the optical lens and the metal ring, the metal ring being used to confine the heated and melted glass solder below the metal ring and allow it to flow outside the edge of the central circular hole of the metal ring.

[0005] Furthermore, the metal ring is made of the same material as the metal tube shell.

[0006] Furthermore, the inner diameter of the metal ring is smaller than the outer diameter of the optical lens, and the outer diameter of the metal ring is larger than the outer diameter of the optical lens.

[0007] Furthermore, the metal shell includes a first tube and a second tube. The outer diameter and inner diameter of the second tube are both larger than the outer diameter and inner diameter of the first tube, respectively. The upper end of the first tube and the lower end of the second tube are connected as a whole to form a stepped shell structure. The optical lens is located inside the first tube and has a first gap between it and the tube wall of the first tube. The glass solder and the metal ring are both located inside the second tube and are both located above the step. The area outside the edge of the middle circular hole of the metal ring includes the first gap and the area enclosed by the bottom surface of the metal ring, the top surface of the step, the inner circle of the metal ring and the inner wall of the second tube.

[0008] Furthermore, the upper outer edge of the second tube extends outward to form a wing plate.

[0009] Furthermore, there is a second gap between the metal ring and the wall of the second tube, the second gap being smaller than the first gap.

[0010] Compared with the prior art, the main advantages of this utility model are reflected in: (1) Controlling the flow area of ​​glass solder: The flow of glass solder is restricted by the central hole of the metal ring, so that the glass solder after being heated and melted is confined to the area below the metal ring and flows outside the edge of the central hole of the metal ring. This prevents the glass solder after being heated and melted from entering the area inside the edge of the central hole, thus avoiding disorderly flow of the glass solder after being heated and melted and improving the controllability of welding.

[0011] (2) Optimize gap filling: Due to the gravity of the metal ring, the glass solder is more likely to fill the gap (first gap) between the metal tube shell and the optical lens, which improves the welding sealing and the overall performance of the optical device.

[0012] (3) Simple structure and easy to implement: Only a metal ring needs to be added to the original structure. No complicated process modification is required, which is convenient for industrial production and application. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a traditional optical lens and metal tube shell being welded together using glass solder when the glass solder has not yet melted due to heat. Figure 2 This is a schematic diagram showing the melting of glass solder when a traditional optical lens is welded to a metal tube using glass solder. Figure 3 This is a schematic diagram of the glass solder positioning and welding structure of the optical lens and metal tube shell of this utility model when the glass solder has not been heated and melted. Figure 4 This is a schematic diagram of the glass solder positioning and welding structure of the optical lens and metal tube shell of this utility model after the glass solder is heated and melted.

[0014] Reference numerals: 1. Metal tube shell; 11. First tube body; 12. Second tube body; 13. Wing plate; 14. First gap a; 15. Second gap b; 2. Glass solder; 3. Optical lens; 4. Metal ring. Detailed Implementation

[0015] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] like Figure 3-4As shown, the glass solder positioning and welding structure of the optical lens and the metal tube shell includes a metal tube shell 1, a glass solder 2 and an optical lens 3 located inside the metal tube shell 1. The glass solder 2 is located above the optical lens 3. A metal ring 4 is also provided inside the metal tube shell 1. The glass solder 2 is located between the optical lens 3 and the metal ring 4. The metal ring 4 is used to restrict the glass solder after it is heated and melted to flow below the metal ring 4 and outside the edge of the central circular hole of the metal ring 4. That is, the glass solder can only flow onto the metal ring material, and the middle of the metal ring is hollow, so the solder cannot flow through it, that is, it will not flow into the area of ​​the central circular hole of the metal ring 4.

[0017] The metal ring 4 and the metal tube shell 1 are made of the same metal material that can bond well with the glass solder 2, ensuring material compatibility and welding stability during the welding process.

[0018] The inner diameter of the metal ring 4 is smaller than the outer diameter of the optical lens 3, while the outer diameter of the metal ring 4 is larger than the outer diameter of the optical lens 3. This ensures the precise positioning of the metal ring 4 between the metal housing 1 and the optical lens 3.

[0019] The metal shell 1 includes a first tube 11 and a second tube 12. The outer diameter and inner diameter of the second tube 12 are both larger than the outer diameter and inner diameter of the first tube 11, respectively. The upper end of the first tube 11 and the lower end of the second tube 12 are connected as a single unit to form a stepped shell structure. The optical lens 3 is located inside the first tube 11 and has a first gap a between it and the tube wall of the first tube 11. The glass solder 2 and the metal ring 4 are both located inside the second tube 12 and are both located above the step. The area outside the edge of the central circular hole of the metal ring 4 includes the first gap a and the area enclosed by the bottom surface of the metal ring 4, the top surface of the step, the inner circle of the metal ring 4, and the inner wall of the second tube 12. The metal ring 4 and the tube wall of the second tube 12 have a second gap b, which is smaller than the first gap a. The outer edge of the upper end of the second tube 12 extends outward to form a wing plate 13.

[0020] During welding, the structure is placed in a high-temperature furnace. After the glass solder 2 melts at high temperature, it rolls on the optical lens 3, the metal shell 1, and the metal ring 4. The glass solder 2 is acted upon by the optical lens 3 and the metal shell 1 on one side, and by the metal ring 4 on the other. The metal ring 4 exerts a certain traction force on the rolling of the glass solder 2, causing it to flow uniformly around the edge of the central circular hole of the metal ring 4 under the combined action of the optical lens 3, the metal shell 1, and the metal ring 4 (being confined to a specific area (outside the edge of the central circular hole), and not flowing into the area of ​​the central circular hole of the metal ring 4 (the outer perimeter inside the edge of the central circular hole)). It does not flow randomly in the area of ​​the optical lens 3 directly opposite the central circular hole. At the same time, due to the gravity of the metal ring 4, the glass solder 2 can more easily flow into the first gap a between the metal shell 1 and the optical lens 3. After cooling, it forms a reliable welded structure, achieving precise filling and reliable welding. This effectively solves the problem of disordered flow of glass solder and difficulty in filling gaps, improving the controllability and reliability of welding.

[0021] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A glass solder positioning and welding structure for an optical lens and a metal tube shell, comprising a metal tube shell (1) and a glass solder (2) and an optical lens (3) located within the metal tube shell (1), wherein the glass solder (2) is located above the optical lens (3), characterized in that: It also includes a metal ring (4) located inside the metal tube shell (1), the glass solder (2) being located between the optical lens (3) and the metal ring (4), the metal ring (4) being used to confine the heated and melted glass solder below the metal ring (4) and to allow it to flow outside the edge of the central circular hole of the metal ring (4).

2. The glass solder positioning and welding structure for the optical lens and the metal tube shell according to claim 1, characterized in that: The metal ring (4) is made of the same material as the metal tube shell (1).

3. The glass solder positioning and welding structure for the optical lens and the metal tube shell according to claim 1, characterized in that: The inner diameter of the metal ring (4) is smaller than the outer diameter of the optical lens (3), and the outer diameter of the metal ring (4) is larger than the outer diameter of the optical lens (3).

4. The glass solder positioning and welding structure for the optical lens and the metal tube shell according to claim 3, characterized in that: The metal tube shell (1) includes a first tube body and a second tube body. The outer diameter and inner diameter of the second tube body are both larger than the outer diameter and inner diameter of the first tube body, respectively. The upper end of the first tube body and the lower end of the second tube body are connected as a whole to form a stepped tube shell structure. The optical lens (3) is located in the first tube body and has a first gap between it and the tube wall of the first tube body. The glass solder (2) and the metal ring (4) are both located in the second tube body and are both located above the step. The area outside the edge of the middle circular hole of the metal ring (4) includes the first gap and the area enclosed by the bottom surface of the metal ring (4), the top surface of the step, the inner circle of the metal ring (4) and the inner wall of the second tube body.

5. The glass solder positioning and welding structure for the optical lens and the metal tube shell according to claim 4, characterized in that: The upper outer edge of the second tube extends outward to form a wing plate.

6. The glass solder positioning and welding structure for the optical lens and the metal tube shell according to claim 4, characterized in that: There is a second gap between the metal ring (4) and the wall of the second tube, and the second gap is smaller than the first gap.

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