Manual focusing tool for laser alignment

Abstract

The utility model relates to a manual focusing tool for laser alignment. The tool comprises a base, a mounting frame is arranged on the base, a first gear is arranged on the mounting frame in a synchronous rotation mode through a first wheel shaft, and a second gear in meshing transmission with the first gear is arranged on the mounting frame in a synchronous rotation mode through a second wheel shaft. The first wheel shaft is provided with a force application rod for manual rotation, the second wheel shaft is provided with an eccentric column, the axis of the eccentric column is parallel to the axis of the second wheel shaft, and the eccentric column is used for being matched with an annular groove in a laser shell or an annular groove in a collimating mirror shell in a limiting mode. Rotation of the first wheel shaft drives the eccentric column to do circular motion with the axis of the second wheel shaft as the center line so as to drive the laser or the collimating lens to do linear reciprocating motion, and adjustment of the distance between the laser and the collimating lens is achieved. The tool structure not only is simple in structure and low in price, but also is very convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of laser focusing, in particular to a laser alignment manual focusing tool. Background Art

[0002] Lasers are widely used in many fields. In scientific research, because lasers are highly focused beams of light, scientists can use them to study atoms, molecules, and condensed matter. In medicine, lasers are used in ophthalmic surgeries, such as LASIK (Laser In Situ Kernel) and cataract surgery. In manufacturing and processing, laser cutting, laser welding, and laser marking are common laser processing technologies. The high energy density and precisely controlled beam of lasers enable fine processing and material cutting, such as metal cutting, semiconductor processing, and textile cutting. In the measurement and detection fields, lasers offer high precision and sensitivity. For example, laser rangefinders can be used to measure distance and topography, laser radars can be used for remote sensing and environmental monitoring, and laser interferometers can be used to measure surface topography and the accuracy of optical components.

[0003] Laser applications in various fields rely on laser collimation, which precisely directs the laser beam in a certain direction, thereby improving measurement precision and accuracy. Lasers themselves have excellent directionality, but when they pass through certain optical components (such as collimating lenses), the divergence angle of the laser can be further reduced, making it a parallel beam. This helps maintain the brightness and concentration of the laser over longer distances.

[0004] Therefore, in laser applications, laser collimating lenses are indispensable. Although existing focusing devices can adjust the distance between the collimating lens and the laser to achieve laser focusing, the existing focusing devices are complex in structure and relatively expensive. Utility Model Content

[0005] The utility model aims to provide a laser alignment manual focusing tool to solve the problems of complex structure and high price in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts only the following technical solutions for a manual focusing tool for laser alignment: a manual focusing tool for laser alignment, comprising a base, a mounting frame provided on the base, a first gear provided on the mounting frame which rotates synchronously with the first wheel shaft, and a second gear which meshes with the first gear and rotates synchronously with the second wheel shaft; a force rod for manual rotation is provided on the first wheel shaft, an eccentric column whose axis is parallel to the axis of the second wheel shaft is provided on the second wheel shaft, the eccentric column being used to limit the engagement with the annular groove on the laser housing or the annular groove on the collimator housing; the rotation of the first wheel shaft drives the eccentric column to perform circular motion with the axis of the second wheel shaft as the center line, thereby driving the laser or the collimator to perform linear reciprocating motion, thereby realizing the distance adjustment between the laser and the collimator.

[0007] The mounting frame is provided with a mounting block having a mounting cavity. The mounting block is provided with a cover plate for sealing the mounting cavity. The first gear and the second gear are both located in the mounting cavity.

[0008] A first protrusion and a second protrusion protruding upward are provided on the bottom wall of the installation cavity. A first mounting hole for rotatable installation of the first wheel axle is provided through the first protrusion, and a second mounting hole for installation of the second rotating wheel axle is provided through the second protrusion. The end face of the first gear contacts the upper end of the first protrusion, and the end face of the second gear contacts the upper end of the second protrusion.

[0009] The first axle is provided with a first mounting section with a "D"-shaped cross section, and the second axle is provided with a second mounting section with a "D"-shaped cross section. The first gear and the second gear both have a "D"-shaped center hole that is mounted in accordance with the corresponding mounting section.

[0010] The length of the first mounting section is smaller than the length of the first axle, so that a first step is formed at the upper end of the first axle for limited engagement with the end face of the first gear.

[0011] The length of the second mounting section is smaller than the length of the second axle, so that a second step is formed at the upper end of the second axle for limited engagement with the end face of the second gear.

[0012] The cover plate is provided with a through hole for the force applying rod to pass through upwards, and the force applying rod is provided with a radial through hole for installing a force applying tool.

[0013] The tooth tip circle diameter of the first gear is smaller than the tooth tip circle diameter of the second gear.

[0014] The beneficial effects of this utility model include manually applying a rotational force through a force-applying rod, which drives the first axle and the first gear to rotate synchronously. The first gear then drives the second gear, which in turn drives the second axle and the eccentric column thereon to rotate synchronously. With each rotation of the second axle, the eccentric column performs a circular motion about the axis of the second axle. The annular groove on the laser housing or the collimator housing cooperates with the eccentric column to limit the position, thereby driving the laser or collimator to reciprocate linearly, thereby adjusting the laser focal length. This tooling structure is not only simple and inexpensive, but also very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an embodiment of a laser alignment manual focusing tooling of the present utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the cover;

[0017] Figure 3 yes Figure 1 Schematic diagram of the structure of the installation block;

[0018] Figure 4 It is a schematic diagram of the structure of the first axle;

[0019] Figure 5 It is a schematic diagram of the structure of the second axle;

[0020] Figure 6 is a structural diagram of the first gear;

[0021] Figure 7 It is a structural diagram of the second gear. DETAILED DESCRIPTION

[0022] To facilitate understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0023] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] An embodiment of a laser alignment manual focusing tool of the present utility model is as follows Figure 1-Figure 7As shown, it includes a base 1, which is used to be fixed on the optical platform. In this embodiment, the base is a rectangular block structure, and U-shaped countersunk holes 2 are provided on both ends of the rectangular block for connecting bolts to be installed to fix the base on the optical platform. A mounting frame 3 is provided on the base, and in this embodiment, the mounting frame includes two columns. A mounting block 4 is provided on the mounting frame, and one end of the column is fixedly connected to the base, and the other end is fixedly connected to the mounting block. The mounting block is provided with a mounting cavity 22 with an upward opening, and the mounting block is provided with a cover plate 5 for sealing the mounting cavity. The cover plate is used to seal the mounting cavity to form a sealed cavity, which can play a role in dust prevention and protection of internal components. The cover plate and the mounting block can be connected together by screws.

[0025] A first gear 6 is provided in the mounting cavity 22 for synchronous rotation via the first axle 7, and a second gear 11 is provided for synchronous rotation with the first gear 6 via the second axle 10. A force rod 8 for manual rotation is provided on the first axle 6, and a through hole is provided on the cover plate for the force rod to pass through upward, that is, the force rod passes through the cover plate upward. A radial through hole 9 is provided on the force rod for installing a force tool, such as a long rod as a wrench. The upper end of the second axle 10 has a mounting section 13, and the cover plate is provided with a through hole for the mounting section to be rotatably installed and pass through upward. The lower end of the second axle 10 passes through the mounting block 5, and the lower end of the second axle is provided with an eccentric column 12 whose axis is parallel to the axis of the second axle. The eccentric column 12 is used to limit the engagement with the annular groove on the laser housing or the annular groove on the collimator housing. The rotation of the second axle causes the eccentric column to perform circular motion about the axis of the second axle. The limiting action between the eccentric column and the corresponding annular groove wall enables linear adjustment of the relative position between the laser and the collimator, thus achieving laser focusing. In this embodiment, the tip diameter of the first gear 6 is smaller than that of the second gear 11. This means that the first gear is a small gear, and the second gear is a large gear. This arrangement offers the advantage of more precise and accurate adjustments by manually adjusting the small gear to drive the large gear.

[0026] The bottom wall of the mounting cavity is provided with an upwardly projecting first protrusion 16 and a second protrusion 14. The first protrusion 14 is provided with a first mounting hole 17 extending vertically therethrough for the rotatable mounting of the first wheel axle, and the second protrusion 14 is provided with a second mounting hole 15 extending vertically therethrough for the mounting of the second rotating wheel axle. The advantage of this arrangement is that, during installation, the end face of the first gear 6 contacts the upper end of the first protrusion 16, and the end face of the second gear 11 contacts the upper end of the second protrusion 14, which can reduce friction when the gears rotate. Without the protrusions, the gears would have a large contact area with the bottom wall of the mounting cavity, resulting in high friction and severe wear.

[0027] The gears and axles are mounted as follows: a first mounting section 18 with a D-shaped cross section is provided on the first axle 7, and a second mounting section 19 with a D-shaped cross section is provided on the second axle 10. Both the first and second gears have D-shaped center holes (20 and 21) that mate with the corresponding mounting sections. In this embodiment, the length of the first mounting section 18 is shorter than that of the first axle 7, forming a first step 23 at the upper end of the first axle for positional engagement with the end face of the first gear. The length of the second mounting section 19 is shorter than that of the second axle 10, forming a second step 24 at the upper end of the second axle for positional engagement with the end face of the second gear. The first axle and the force rod form a stepped shaft structure, with the first axle being the larger diameter section, and the resulting step interlocking with the cover plate. Similarly, the second axle and the mounting section also form a stepped shaft structure, with the second axle being the larger diameter section, and the resulting step interlocking with the cover plate. The cover plate, while fixedly connected to the mounting block, also provides positional engagement for the axles and corresponding gears. This design not only enables synchronous rotation between the axle and the gear, but also limits the gear.

[0028] The following is a detailed description with specific parameters. These parameters are only for a clearer description of the adjustment process and do not limit the protection range. In this embodiment, the small gear has 20 teeth; the large gear has 100 teeth. The eccentricity of the eccentric column is 1mm, that is, the laser or collimating lens can move 1mm forward and backward, and the full reciprocating motion range is 2mm and the stroke is 4mm. Because the tooth ratio of the small gear to the large gear is 1:5, when the laser or collimating lens travels 4mm, the small gear has rotated 1800°. Every 1° rotation of the force rod can bring an average focusing movement of 2um.

[0029] In the above description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal connection between two components or the interaction between two components. Therefore, unless otherwise expressly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0031] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise clearly specified.

[0032] In other embodiments of the present invention, the mounting frame may be a column or other structures, such as an "X" structure; ordinary screw holes may be provided on the base instead of U-shaped countersunk grooves; radial through holes may not be provided on the force rod, and a handwheel with a diameter larger than the diameter of the force rod may be provided on the force rod; the shape of the base may also be a circular block.

Claims

1. A laser alignment manual focusing tool, characterized by: The utility model comprises a base, on which a mounting frame is provided, on which a first gear is provided on the mounting frame through synchronous rotation of a first wheel shaft, and a second gear is provided on the mounting frame through synchronous rotation of a second wheel shaft that meshes with the first gear; a force rod for manual rotation is provided on the first wheel shaft, and an eccentric column whose axis is parallel to the axis of the second wheel shaft is provided on the second wheel shaft, and the eccentric column is used to cooperate with the annular groove on the laser housing or the annular groove on the collimator housing; the rotation of the first wheel shaft drives the eccentric column to make a circular motion with the axis of the second wheel shaft as the center line, thereby driving the laser or the collimator to move back and forth in a straight line, thereby realizing the distance adjustment between the laser and the collimator.

2. The laser alignment manual focusing tool according to claim 1, characterized in that: The mounting frame is provided with a mounting block having a mounting cavity. The mounting block is provided with a cover plate for sealing the mounting cavity. The first gear and the second gear are both located in the mounting cavity.

3. The laser alignment manual focusing tool according to claim 2, characterized in that: A first protrusion and a second protrusion protruding upward are provided on the bottom wall of the installation cavity. A first mounting hole for rotatable installation of the first wheel axle is provided through the first protrusion, and a second mounting hole for installation of the second rotating wheel axle is provided through the second protrusion. The end face of the first gear contacts the upper end of the first protrusion, and the end face of the second gear contacts the upper end of the second protrusion.

4. The laser alignment manual focusing tool according to claim 2, characterized in that: The first axle is provided with a first mounting section with a "D"-shaped cross section, and the second axle is provided with a second mounting section with a "D"-shaped cross section. The first gear and the second gear both have a "D"-shaped center hole that is mounted in conjunction with the corresponding mounting section.

5. The laser alignment manual focusing tool according to claim 4, characterized in that: The length of the first mounting section is smaller than the length of the first axle, so that a first step is formed at the upper end of the first axle for limited engagement with the end face of the first gear.

6. The laser alignment manual focusing tool according to claim 4, characterized in that: The length of the second mounting section is smaller than the length of the second axle, so that a second step is formed at the upper end of the second axle for limited engagement with the end face of the second gear.

7. The laser alignment manual focusing tool according to claim 2, characterized in that: The cover plate is provided with a through hole for the force applying rod to pass through upwards, and the force applying rod is provided with a radial through hole for installing a force applying tool.

8. The laser alignment manual focusing tool according to any one of claims 1 to 7, characterized in that: The tooth tip circle diameter of the first gear is smaller than the tooth tip circle diameter of the second gear.

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