Laser focusing device

Abstract

The utility model belongs to the technical field of laser focusing, and particularly relates to a laser focusing device, which comprises a connecting cylinder connected with a laser emitting end of a laser, a focusing cylinder movably connected with the connecting cylinder, a first focusing lens arranged in the connecting cylinder, and a second focusing lens arranged in the focusing cylinder. The adjusting structure is used for driving the focusing cylinder to move relative to the connecting cylinder, the adjusting structure comprises a fixed seat and a movable seat, the fixed seat is fixedly connected with the connecting cylinder through an L-shaped connecting rod, the movable seat is connected to the fixed seat in a sliding mode, the movable seat is fixedly connected with the focusing cylinder, and a driving structure for driving the movable seat to move is arranged on the fixed seat. By adopting the structural design, the position of the focusing cylinder in the connecting cylinder is adjusted by the adjusting mechanism, so that the distance between the first focusing lens and the second focusing lens is changed, and laser is quickly focused by using the focusing lenses.

Description

Technical Field

[0001] This utility model belongs to the field of laser focusing technology, and specifically relates to a laser focusing device. Background Technology

[0002] A laser is a device that emits laser light. Lasers are used in various fields in modern life. Because lasers require focusing under different conditions to suit different application scenarios, focusing devices are needed for focusing. Existing laser focusing devices consist of a mounting sleeve, a focusing sleeve, and an internal focusing lens. Focusing is achieved by changing the distance between the focusing lens and the laser's emission port. However, existing laser focusing devices have certain shortcomings in terms of structural design and focusing accuracy. For example, some focusing devices are complex and bulky, hindering equipment integration and miniaturization; some have limited focusing accuracy, making it difficult to meet the needs of high-precision applications; and some have poor stability during focusing, making them susceptible to external interference. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the prior art, the present invention provides a laser focusing device to solve the problems in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A laser focusing device includes a connecting cylinder connected to the laser emitting end of a laser, a first focusing lens being disposed inside the connecting cylinder, and a focusing cylinder movably connected to the connecting cylinder, wherein a second focusing lens is disposed inside the focusing cylinder.

[0006] It also includes an adjustment structure for driving the focusing tube to move relative to the connecting tube. The adjustment structure includes a fixed base, which is fixedly connected to the connecting tube via an L-shaped connecting rod, and a movable base slidably connected to the fixed base. The movable base is fixedly connected to the focusing tube, and the fixed base is provided with a driving structure for driving the movable base to move.

[0007] By adopting the above structural design, the adjusting mechanism adjusts the position of the focusing cylinder within the connecting cylinder, thereby changing the distance between the first and second focusing lenses, thus enabling rapid focusing of the laser using the focusing lenses. More specifically, the fixed base of the adjusting structure is fixedly connected to the connecting cylinder via an L-shaped connecting rod, while the movable base is slidably connected to the fixed base. The driving mechanism on the fixed base drives the movable base to slide, thereby causing the focusing cylinder and the connecting cylinder to move closer or further apart, achieving the purpose of focusing. This focusing device has a simple structure and is easy to use.

[0008] Furthermore, a pair of guide sliders are provided on the side of the fixed seat near the movable seat along its length, and a groove matching the guide sliders is provided on the movable seat along its length.

[0009] Furthermore, the fixed seat has a mounting groove that passes through the guide slider in the middle, and a rack plate is provided between the two sliding grooves on the movable seat, with the toothed grooves of the rack plate facing the fixed seat.

[0010] Furthermore, the drive structure includes a rotating shaft rotatably mounted in the mounting slot, with both ends of the rotating shaft exposed outside the fixed base and connected to knobs, and a gear fixedly connected to the middle of the rotating shaft, the gear being connected to a rack plate.

[0011] Furthermore, a limiting plate is provided on the outer wall of the fixed seat, and two parallel limiting posts are provided on the outer wall of the movable seat, with the limiting plate located between the two limiting posts.

[0012] By adopting the above structural design, and by setting a limiting plate on the fixed seat and two limiting posts on the movable seat, the movable seat is prevented from moving excessively and slipping off the fixed seat.

[0013] Furthermore, the connecting cylinder includes a connecting cylinder body, the upper outer wall of the connecting cylinder body is provided with threads, and the lower part of the connecting cylinder body is provided with a sleeve.

[0014] The focusing tube includes a focusing tube body, an extension is provided at the top of the focusing tube body, the extension is movably disposed within a housing, and a protective lens is provided at the bottom of the focusing tube body.

[0015] Compared with the prior art, this utility model has the following advantages: By adopting the above-mentioned structural design, the adjusting mechanism adjusts the position of the focusing cylinder inside the connecting cylinder, thereby changing the distance between the first focusing lens and the second focusing lens, thus enabling rapid focusing of the laser using the focusing lens. More specifically, the fixed seat of the adjusting structure is fixedly connected to the connecting cylinder via an L-shaped connecting rod, and the movable seat is slidably connected to the fixed seat. The driving mechanism on the fixed seat drives the movable seat to slide, thereby causing the focusing cylinder and the connecting cylinder to move closer or further apart, achieving the purpose of focusing. This focusing device has a simple structure and is easy to use.

[0016] When the focus needs to be adjusted, turn the knob to drive the gear on the shaft to rotate. The gear drives the rack plate that meshes with it to move, so that the movable seat moves under the cooperation of the guide slider and the slide groove, causing the focusing tube to move closer to or away from the connecting tube, thereby adjusting the distance between the first focusing lens in the connecting tube and the second focusing lens in the focusing tube, so as to achieve the purpose of focusing. The operation is very simple. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural schematic diagram (view 1) of an embodiment of a laser focusing device according to the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram (view 2) of an embodiment of a laser focusing device according to the present invention;

[0019] Figure 3 This is a three-dimensional structural schematic diagram (view 3) of an embodiment of a laser focusing device according to the present invention;

[0020] Figure 4 This is a three-dimensional structural schematic diagram (view 4) of an embodiment of a laser focusing device according to the present invention;

[0021] Figure 5 This is a disassembly and assembly diagram of a laser focusing device according to the present invention;

[0022] The reference numerals in the accompanying drawings include:

[0023] Connecting cylinder (100), connecting cylinder body (101), sleeve (102), thread (103), first focusing lens (104), focusing cylinder (200), focusing cylinder body (201), extension (202), second focusing lens (203), adjustment structure (300), L-shaped connecting rod (301), fixed seat (302), guide slider (3021), mounting groove (3022), movable seat (303), slide groove (3031), rack plate (304), rotating shaft (305), gear (306), knob (307), limiting plate (308), limiting post (309). Detailed Implementation

[0024] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between 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.

[0028] Example 1:

[0029] like Figure 1-5 As shown, this utility model discloses a laser focusing device. Specifically, it includes a connecting cylinder 100 connected to the laser emitting end of a laser, with a first focusing lens 104 disposed inside the connecting cylinder 100. It also includes a focusing cylinder 200 movably connected to the connecting cylinder 100, with a second focusing lens 203 disposed inside the focusing cylinder 203. Furthermore, it includes an adjustment structure 300 for driving the focusing cylinder 200 to move relative to the connecting cylinder 100. The adjustment structure 300 includes a fixed base 302, which is fixedly connected to the connecting cylinder 100 via an L-shaped connecting rod 301. A movable base 303 is slidably connected to the fixed base 302 and fixedly connected to the focusing cylinder 200. The fixed base 302 is provided with a driving structure for driving the movable base 303 to move. By adopting the above structural design, the adjustment structure 300 adjusts the position of the focusing cylinder 200 within the connecting cylinder 100, thereby changing the distance between the first focusing lens 104 and the second focusing lens 203, thus enabling rapid focusing of the laser using the focusing lens. More specifically, the fixed seat 302 of the adjustment structure 300 is fixedly connected to the connecting cylinder 100 via the L-shaped connecting rod 301, and the movable seat 303 is slidably connected to the fixed seat 302. The driving structure on the fixed seat 302 drives the movable seat 303 to slide, thereby causing the focusing cylinder 200 and the connecting cylinder 100 to move closer or further apart to achieve the purpose of focusing. This focusing device has a simple structure and is easy to use.

[0030] In this embodiment, a pair of guide sliders 3021 are provided along the length of the fixed base 302 near the movable base 303, and a groove 3031 matching the guide sliders 3021 is provided along the length of the movable base 303. A mounting groove 3022 penetrating the guide sliders 3021 is provided in the middle of the fixed base 302, and a rack plate 304 is provided between the two grooves 3031 on the movable base 303, with the toothed grooves of the rack plate 304 facing the fixed base 302.

[0031] In this embodiment, the drive structure includes a rotating shaft 305 rotatably mounted in the mounting groove 3022. Both ends of the rotating shaft 305 are exposed outside the fixed seat 302 and connected to knobs 307. A gear 306 is fixedly connected to the middle of the rotating shaft 305, and the gear 306 is connected to the rack plate 304.

[0032] In this embodiment, a limiting plate 308 is provided on the outer wall of the fixed seat 302, and two parallel limiting posts 309 are provided on the outer wall of the movable seat 303, with the limiting plate 308 located between the two limiting posts 309. By adopting the above structural design, by providing the limiting plate 308 on the fixed seat 302 and the two limiting posts 309 on the movable seat 303, excessive movement of the movable seat 303 and slippage from the fixed seat 302 are prevented.

[0033] In this embodiment, the connecting cylinder 100 includes a connecting cylinder body 101, the upper outer wall of the connecting cylinder body 101 is provided with a thread 103, and the lower part of the connecting cylinder body 101 is provided with a sleeve 102; the focusing cylinder 200 includes a focusing cylinder body 201, the top of the focusing cylinder body 201 is provided with an extension 202, the extension 202 is movably disposed in the sleeve 102, and the bottom of the focusing cylinder body 201 is provided with a protective lens.

[0034] Working principle: First, the laser emitting end of the laser is threadedly connected to the upper end of the connecting cylinder body 101, thereby installing the focusing device on the laser. When the focus needs to be adjusted, the knob 307 is turned, which drives the gear 306 on the rotating shaft 305 to rotate. The gear 306 drives the rack plate 304 that meshes with it to move, thereby causing the movable seat 303 to move under the cooperation of the guide slider 3021 and the slide groove 3031, which drives the focusing cylinder 200 to move closer to or away from the connecting cylinder 100, thereby adjusting the distance between the first focusing lens 104 in the connecting cylinder 100 and the second focusing lens 203 in the focusing cylinder 200, thus achieving the purpose of focusing.

[0035] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A laser focus adjustment device, characterized by: It includes a connecting tube (100) connected to the laser emitting end of a laser, and a first focusing lens (104) is provided inside the connecting tube (100). It also includes a focusing tube (200) movably connected to the connecting tube (100), and a second focusing lens (203) is provided inside the focusing tube (200). It also includes an adjustment structure (300) for driving the focusing cylinder (200) to move relative to the connecting cylinder (100). The adjustment structure (300) includes a fixed seat (302), which is fixedly connected to the connecting cylinder (100) via an L-shaped connecting rod (301). A movable seat (303) is slidably connected to the fixed seat (302), and the movable seat (303) is fixedly connected to the focusing cylinder (200). The fixed seat (302) is provided with a driving structure for driving the movable seat (303) to move.

2. A laser focus adjustment device as claimed in claim 1, characterized in that: The fixed seat (302) is provided with a pair of guide sliders (3021) along its length on the side near the movable seat (303), and the movable seat (303) is provided with a groove (3031) that matches the guide sliders (3021) along its length.

3. A laser focus adjustment device as claimed in claim 2, characterized in that: The fixed seat (302) is provided with a mounting groove (3022) that passes through the guide slider (3021) in the middle. A rack plate (304) is provided between the two sliding grooves (3031) on the movable seat (303), and the tooth groove of the rack plate (304) faces the fixed seat (302).

4. A laser focus adjustment device as claimed in claim 3, characterized in that: The drive structure includes a rotating shaft (305) rotatably mounted in the mounting slot (3022), with both ends of the rotating shaft (305) exposed outside the fixed seat (302) and connected to knobs (307), and a gear (306) fixedly connected to the middle of the rotating shaft (305), the gear (306) being connected to a rack plate (304).

5. A laser focus adjustment device as claimed in claim 1, characterized in that: A limiting plate (308) is provided on the outer wall of the fixed seat (302), and two parallel limiting posts (309) are provided on the outer wall of the movable seat (303). The limiting plate (308) is located between the two limiting posts (309).

6. A laser focus adjustment device as claimed in claim 5, characterized in that: The connecting cylinder (100) includes a connecting cylinder body (101), the upper outer wall of the connecting cylinder body (101) is provided with a thread (103), and the lower part of the connecting cylinder body (101) is provided with a sleeve (102). The focusing tube (200) includes a focusing tube body (201), an extension (202) is provided on the top of the focusing tube body (201), the extension (202) is movably disposed in the housing (102), and a protective lens is provided on the bottom of the focusing tube body (201).

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