Modularized variable-focus laser emission lens

Abstract

The utility model discloses a modularized variable-focus laser emission lens, which belongs to the technical field of laser equipment, and comprises a QBH optical fiber connector, a first lens cone, a second lens cone and a third lens cone, the front end of the QBH optical fiber connector is connected with the rear end of the first lens cone, the rear end of the second lens cone is connected with the front end of the first lens cone, and the rear end of the third lens cone is connected with the front end of the second lens cone. The rear end of the third lens barrel is connected with the front end of the second lens barrel, the second lens barrel comprises a second barrel body, a focusing lens and a first lens, the first lens is arranged in the second barrel body and close to the third lens barrel, and the focusing lens is slidably arranged in the second barrel body and located on the side, away from the third lens barrel, of the first lens; a strip-shaped hole is formed in the side wall of the second barrel, a focusing mechanism is arranged at the strip-shaped hole, and the focusing mechanism is connected with the focusing lens. According to the transmitting lens, modular design is adopted, all parts are machined and manufactured respectively, the machining cost is greatly reduced, all the modules are detachably connected, disassembly, assembly and maintenance are convenient, the maintenance cost is reduced, the focal length of the lens can be adjusted, and the use requirement is met.

Description

A modular variable-focus laser emitting lens Technical Field

[0001] This utility model relates to the field of laser equipment technology, specifically to a modular variable-focus laser emitting lens. Background Technology

[0002] In the field of laser equipment technology, the emitting lens barrel is machined as a single piece. To ensure high lens precision and good heat dissipation, the machining cost of the barrel is high. Subsequent assembly and replacement of components are inconvenient, and damage necessitates complete replacement, resulting in high maintenance costs. Furthermore, existing focusing methods often employ ordinary motors and reduction gears. This structure is complex and costly. Affected by issues such as gear machining precision and assembly, the accuracy and stability of focusing cannot be maintained for long periods. After prolonged use, gear wear degrades, making maintenance inconvenient and requiring frequent gear replacement or adjustment of gear clearances. Summary of the Invention

[0003] The purpose of this invention is to provide a modular variable-focus laser emitting lens, which has a simple structure, is easy to use, and can effectively improve the above-mentioned problems.

[0004] The embodiments of this utility model are implemented as follows:

[0005] This utility model provides a modular variable-focus laser emitting lens, including a QBH fiber optic connector, a first lens barrel, a second lens barrel, and a third lens barrel. The front end of the QBH fiber optic connector is connected to the rear end of the first lens barrel, the rear end of the second lens barrel is connected to the front end of the first lens barrel, and the rear end of the third lens barrel is connected to the front end of the second lens barrel. The second lens barrel includes a second barrel body, a focusing lens, and a first lens. The first lens is disposed inside the second barrel body and close to the third lens barrel. The focusing lens is slidably disposed inside the second barrel body and located on the side of the first lens away from the third lens barrel. A strip-shaped hole is provided on the side wall of the second barrel body, and a focusing mechanism is provided at the strip-shaped hole. The focusing mechanism is connected to the focusing lens.

[0006] Furthermore, the first lens barrel includes a first barrel body, an aperture, and a first lens barrel sealing lens. The aperture is disposed within the first barrel body and close to the second lens barrel, and the first lens barrel sealing lens is disposed within the first barrel body and located on the side of the aperture away from the second lens barrel.

[0007] Furthermore, the third lens barrel includes a third barrel body, a second lens, and a second lens barrel sealing lens. The second lens is disposed in the third barrel body near its front end, and the second lens barrel sealing lens is disposed at the front end of the third barrel body and on the side of the second lens away from the second lens.

[0008] Furthermore, a second locking ring for pressing the second lens is provided on the side of the second lens near the sealing lens of the second lens barrel.

[0009] Furthermore, the QBH fiber optic connector is threadedly connected to the first cylindrical body, the first cylindrical body and the second cylindrical body are threadedly connected, and the second cylindrical body is threadedly connected to the third cylindrical body.

[0010] Furthermore, the focusing mechanism includes a lead screw motor and a connecting member. The lead screw motor is supported on the outer wall of the second cylinder and corresponds to the strip hole. The connecting member is connected to the nut on the lead screw of the focusing lens and the lead screw motor, respectively.

[0011] Furthermore, a first locking ring for pressing the first lens is provided on the side of the first lens near the third lens barrel.

[0012] The beneficial effects of this utility model are as follows:

[0013] The modular variable-focus laser emitting lens provided in this embodiment of the invention adopts a modular design, with the QBH fiber optic connector, first lens barrel, second lens barrel, and third lens barrel manufactured separately, greatly reducing processing costs. Each module is detachable and easily connected for disassembly and maintenance. If a module is damaged, only the damaged module needs to be replaced, reducing repair costs. The focusing mechanism can control the position of the focusing lens, thereby changing the focal length of the lens to meet usage requirements. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 is a cross-sectional view of Figure 1;

[0017] Figure 3 is a schematic diagram of the structure of the first lens tube;

[0018] Figure 4 is a schematic diagram of the second lens tube;

[0019] Figure 5 is a schematic diagram of the third lens tube.

[0020] In the diagram: 1-QBH fiber optic connector; 2-First lens barrel; 21-First barrel body; 22-Aperture; 23-First lens barrel sealing mirror; 3-Second lens barrel; 31-Second barrel body; 32-Focusing lens; 33-First lens element; 34-First locking ring; 35-Strip hole; 36-Lead screw motor; 37-Connector; 4-Third lens barrel; 41-Third barrel body; 42-Second lens element; 43-Second lens barrel sealing mirror; 44-Second locking ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] In the description of this utility model, it should be noted that the terms "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0025] Referring to Figures 1 and 2, this embodiment of the present invention provides a modular variable focus laser emitting lens, including a QBH fiber optic connector 1, a first lens barrel 2, a second lens barrel 3, and a third lens barrel 4.

[0026] The QBH fiber optic connector 1 can be made using existing technology or designed according to specific requirements.

[0027] Referring to Figure 3, the first lens barrel 2 includes a first barrel body 21, an aperture 22, and a first lens barrel sealing mirror 23. The aperture 22 is disposed inside the first barrel body 21 and near its front end. The first lens barrel sealing mirror 23 is disposed inside the first barrel body 21 and near its rear end. A sealing ring may be provided between the outer peripheral surface of the first lens barrel sealing mirror 23 and the inner peripheral surface of the first barrel body 21 to improve its sealing performance.

[0028] One end of the QBH fiber optic connector 1 is detachably connected to the rear end of the first cylindrical body 21, for example, by means of threaded connection or snap-fit ​​connection, which facilitates disassembly, replacement or maintenance. In this embodiment, the QBH fiber optic connector 1 and the first cylindrical body 21 are connected by a thread, which can better ensure the stability of the connection. A sealing ring can also be provided at the threaded connection to improve the sealing performance.

[0029] Referring to Figure 4, the second lens barrel 3 includes a second barrel body 31, a focusing lens 32, and a first lens 33. The first lens 33 is disposed inside the second barrel body 31 and near its front end and is pressed by a first locking ring 34. The first locking ring 34 presses against the front edge of the first lens 33 so as not to affect the light passing through the first lens 33. The first locking ring 34 and the second barrel body 31 are threaded together, which facilitates disassembly and assembly.

[0030] The focusing lens 32 is slidably disposed inside the second cylinder 31 and located behind the first lens 33. When the focusing lens 32 is subjected to an axial force, it can move along its axis inside the second cylinder 31.

[0031] The second cylindrical body 31 has a strip-shaped hole 35 on its side wall, and a focusing mechanism is located at the strip-shaped hole 35. The focusing mechanism includes a lead screw motor 36 and a connecting piece 37. The lead screw motor 36 is supported on the outer side wall of the second cylindrical body 31 and corresponds to the strip-shaped hole 35. The connecting piece 37 is connected to the focusing lens 32 and the nut on the lead screw of the lead screw motor 36, and the connecting piece 37 is slidably locked in the strip-shaped hole 35. The connecting piece 37 can be a screw or a slider. When the lead screw motor 36 is working, it can drive the focusing lens 32 to slide along its axis within the second cylindrical body 31, thereby changing the distance between the focusing lens 32 and the first lens 33, and achieving the purpose of changing the focal length. The lead screw motor 36 has high transmission precision, which ensures the accuracy of focusing, and its wear is also small, resulting in high stability.

[0032] The rear end of the second cylinder 31 is detachably connected to the front end of the first cylinder 21, for example, by means of threaded connection or snap-fit ​​connection, which facilitates disassembly, replacement or maintenance. In this embodiment, the second cylinder 31 and the first cylinder 21 are connected by a thread, which can better ensure the stability of the connection. A sealing ring can also be provided at the threaded connection to improve the sealing performance.

[0033] Referring to Figure 5, the third lens barrel 4 includes a third barrel body 41, a second lens 42, and a second lens barrel sealing mirror 43. The second lens 42 is located inside the third barrel body 41 near its front end and is secured by a second locking ring 44. The second locking ring 44 presses against the front edge of the second lens 42, thus not obstructing light transmission through the second lens 42. The second locking ring 44 and the third barrel body 41 are threaded together, facilitating assembly and disassembly. The second lens barrel sealing mirror 43 is located at the front end of the third barrel body 41, in front of the second lens 42. A sealing ring can be provided between the outer circumferential surface of the second lens barrel sealing mirror 43 and the inner circumferential surface of the third barrel body 41 to improve its sealing performance.

[0034] The rear end of the third cylinder 41 is detachably connected to the front end of the second cylinder 31, for example, by means of threaded connection or snap-fit ​​connection, which facilitates disassembly, replacement or maintenance. In this embodiment, the third cylinder 41 and the second cylinder 31 are connected by a thread, which can better ensure the stability of the connection. A sealing ring can also be provided at the threaded connection to improve the sealing performance.

[0035] The first lens barrel sealing mirror 23 and the second lens barrel sealing mirror 43 create a closed environment inside the transmitting lens, preventing dust or other impurities from entering and contaminating the inside of the transmitting lens.

[0036] In use, the optical fiber of the laser generator is connected to the QBH optical fiber connector 1. The laser beam passes through the first lens barrel sealing mirror 23, the aperture 22, the focusing lens 32, the first lens 33, the second lens 42, and the second lens barrel sealing mirror 43 in sequence before irradiating the target surface. Through thermal and photoelectric effects, it produces interference or damage effects on the target.

[0037] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A modular variable-focus laser emitting lens, characterized in that: The system includes a QBH fiber optic connector, a first lens barrel, a second lens barrel, and a third lens barrel. The front end of the QBH fiber optic connector is connected to the rear end of the first lens barrel, the rear end of the second lens barrel is connected to the front end of the first lens barrel, and the rear end of the third lens barrel is connected to the front end of the second lens barrel. The second lens barrel includes a second barrel body, a focusing lens, and a first lens element. The first lens element is disposed inside the second barrel body and close to the third lens barrel. The focusing lens is slidably disposed inside the second barrel body and located on the side of the first lens element away from the third lens barrel. A strip-shaped hole is provided on the side wall of the second barrel body, and a focusing mechanism is provided at the strip-shaped hole. The focusing mechanism is connected to the focusing lens.

2. The modular variable focus laser launch lens of claim 1, wherein: The first lens barrel includes a first barrel body, an aperture, and a first lens barrel sealing lens. The aperture is disposed inside the first barrel body and close to the second lens barrel. The first lens barrel sealing lens is disposed inside the first barrel body and located on the side of the aperture away from the second lens barrel.

3. The modular zoom laser emitting lens of claim 2, wherein: The third lens barrel includes a third barrel body, a second lens, and a second lens barrel sealing lens. The second lens is disposed in the third barrel body near its front end, and the second lens barrel sealing lens is disposed at the front end of the third barrel body and on the side of the second lens away from the second lens.

4. The modular variable-focus laser emitting lens according to claim 3, characterized in that: The second lens has a second locking ring on the side near the sealing lens of the second lens barrel for pressing the second lens.

5. The modular zoom laser emitting lens of claim 3, wherein: The QBH fiber optic connector is threaded to the first cylindrical body, the first cylindrical body and the second cylindrical body are threaded to each other, and the second cylindrical body is threaded to the third cylindrical body.

6. The modular zoom laser emitting lens of claim 1, wherein: The focusing mechanism includes a lead screw motor and a connecting member. The lead screw motor is supported on the outer wall of the second cylinder and corresponds to the strip hole. The connecting member is connected to the nut on the lead screw of the focusing lens and the lead screw motor, respectively.

7. The modular zoom laser emitting lens of claim 1, wherein: The first lens has a first locking ring on the side near the third lens barrel for pressing the first lens.

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