A laser optical axis debugging method and device

Abstract

The application discloses a laser optical axis debugging method and device, comprising the following steps: providing reference benchmark light; leveling the reference benchmark light with the positioning benchmark surface of a laser based on a reflecting focusing mirror and a target plate, and completing positioning of the reference benchmark light, wherein the target plate is arranged at the focal plane of the reflecting focusing mirror; for a laser to be debugged, emitting laser based on the reference benchmark light and its positioning; at the laser outlet, receiving the laser at at least two positions of the light path by using the target plate; and completing debugging according to the position between the light spot of the reference benchmark light and the light spot of the laser emitted by the laser to be debugged, and determining that the optical axis and parallelism of the laser to be debugged meet the requirements. The laser optical axis debugging method and device can greatly reduce the debugging cost and simultaneously meet the debugging of the optical axis position and parallelism.

Description

Technical Field

[0001] This application relates to the field of laser application technology, and in particular to a laser optical axis adjustment method and apparatus. Background Technology

[0002] Currently, many laser application fields have put forward specific requirements for the position of the laser optical axis and the parallelism between the optical axis and the bottom and sides of the laser, especially for mass-produced laser products, which require a high degree of optical axis consistency.

[0003] For small lasers, a square tube front mirror can be used, placed against the side of the laser on the same optical platform, ensuring that the square tube front mirror aligns with the laser's horizontal and vertical reference planes. The laser spot at the focal plane is then observed to coincide with the crosshairs of the square tube mirror. If they are substantially coincident, the laser optical axis parallelism meets the requirements. However, for large lasers, this method requires the laser spot and the square tube front mirror to be completely contained within the aperture of the reflecting mirror. This necessitates a very large aperture reflecting focusing mirror, significantly increasing the laser product's debugging cost. Furthermore, this method can only adjust the laser's optical axis parallelism. Summary of the Invention

[0004] This application provides a laser optical axis adjustment method and apparatus to greatly reduce adjustment costs while simultaneously satisfying the adjustment of optical axis position and parallelism.

[0005] This application provides a laser optical axis adjustment method, including...

[0006] Provide a reference light;

[0007] The reference reference light is aligned parallel to the positioning reference plane of the laser based on the reflective focusing mirror and the target plate, and the positioning of the reference reference light is completed, wherein the target plate is disposed at the focal plane of the reflective focusing mirror.

[0008] For the laser to be debugged, the laser is emitted based on the reference light and its positioning;

[0009] At the laser exit point, a target plate is used to receive the laser at at least two positions in the optical path;

[0010] Based on the position between the spot of the reference light and the spot of the laser emitted by the laser to be debugged, the debugging is completed, and it is determined that the optical axis and parallelism of the laser to be debugged meet the requirements.

[0011] Optionally, aligning the reference beam with the laser's positioning reference plane based on the reflecting focusing mirror and the target plate, and completing the positioning of the reference beam, includes:

[0012] Provides a test bench and a laser mounting structure;

[0013] The light source of the reference light is set on the debugging platform, and the square tube front mirror is fixed to the laser fixing structure.

[0014] Based on the crosshairs of the square tube front mirror, the position of the reference light source on the target plate after passing through the reflective focusing mirror is observed, so as to align the reference light with the positioning reference plane of the laser.

[0015] Optionally, it further includes: after aligning the reference beam with the positioning reference plane of the laser, it further includes:

[0016] In the optical path of the reference light, based on the debugging platform, at least two apertures are set to limit the position of the reference light.

[0017] Optionally, the light source of the reference light is set on the debugging platform, and its position is adjacent to the square tube front mirror.

[0018] Optionally, the specifications of the reflecting focusing mirror are such that it can simultaneously cover the reference light and the crosshairs of the square tube front mirror field of view.

[0019] Optionally, the debugging process can be completed based on the position between the reference light spot and the laser spot emitted by the laser to be debugged. This includes ensuring that the distance between the center of the reference light spot received at different positions and the center of the laser spot emitted by the laser to be debugged is within the allowable deviation range.

[0020] This application also proposes a laser optical axis adjustment device, including:

[0021] Test benchtop;

[0022] A reference light source is set on the test bench surface and emits reference beam;

[0023] A square tube front mirror is set on the debugging platform to observe the position of the reference light source on the target plate after passing through the reflective focusing mirror, so as to align the reference light with the positioning reference plane of the laser.

[0024] A reflecting focusing mirror is used to reflect the reference light onto the target plate;

[0025] A target plate is disposed at the focal plane of the reflecting focusing mirror, and the positioning of the reference light is completed based on the target plate;

[0026] After the reference light is positioned, the reference light source is used for the laser to be debugged, and debugging is completed based on the target plate.

[0027] The laser optical axis adjustment method and apparatus of this application can greatly reduce the adjustment cost and simultaneously satisfy the adjustment of optical axis position and parallelism.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1 This is a basic flowchart of the laser optical axis adjustment method of this application;

[0031] Figure 2 This serves as an example of the reference light calibration process for the laser optical axis calibration method of this application;

[0032] Figure 3 This is an example of the process of debugging the laser to be debugged in the laser optical axis debugging method of this application. Detailed Implementation

[0033] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0034] This application provides a laser optical axis adjustment method, such as... Figure 1 As shown, including

[0035] In step S101, a reference light is provided. Specifically, the reference light can be provided by a small red light-emitting diode, which can emit red light. Of course, other color schemes can be used, but they are not limited here.

[0036] In step S102, the reference reference light is aligned parallel to the positioning reference plane of the laser based on the reflecting focusing mirror and the target plate, thus completing the positioning of the reference reference light. The target plate is positioned at the focal plane of the reflecting focusing mirror. Figure 2As shown, this embodiment uses a conversion reference method to simultaneously convert the horizontal reference plane and the vertical reference plane into the positioning reference plane (reference reference light) of the laser, including the bottom reference plane and the side reference plane, i.e. the horizontal plane and the vertical plane. Thus, in this embodiment, the relative positions of the near end and the far end of the laser and the reference reference light can be adjusted to be consistent.

[0037] In step S103, for the laser to be debugged, the laser is emitted based on the reference light and its positioning.

[0038] In step S104, at the laser exit, a target plate is used to receive laser light at at least two positions in the optical path.

[0039] In step S105, the calibration is completed based on the position between the reference light spot and the laser spot emitted by the laser to be calibrated, confirming that the optical axis and parallelism of the laser to be calibrated meet the requirements. After the reference light calibration is completed, the reference light is used to calibrate the optical axis and parallelism of the laser to be calibrated.

[0040] The laser optical axis adjustment method and apparatus of this application can greatly reduce the adjustment cost and simultaneously satisfy the adjustment of optical axis position and parallelism.

[0041] In some embodiments, aligning the reference beam with the positioning reference plane of the laser based on the reflecting focusing mirror and the target plate, and completing the positioning of the reference beam, includes:

[0042] Provides a test bench and a laser mounting structure;

[0043] The light source of the reference light is set on the debugging platform, and the square tube front mirror is fixed to the laser fixing structure.

[0044] Based on the crosshairs of the square tube front mirror, the position of the reference light source on the target plate after passing through the reflective focusing mirror is observed, so as to align the reference light with the positioning reference plane of the laser.

[0045] In some embodiments, the specifications of the reflecting focusing mirror meet the requirement of simultaneously covering the reference light and the crosshairs of the square tube front mirror's field of view. In this embodiment, the square tube front mirror mainly consists of an objective lens, a reticle, and an eyepiece, forming a monocular telescope system with a square tube cross-section. The four outer surfaces of the tube are the instrument's working surfaces, finely machined so that adjacent surfaces are strictly perpendicular and opposite surfaces are strictly parallel, with the reticle's engraving lines parallel to the working surfaces. Since the aiming axis of the square tube front mirror is strictly parallel to the four working surfaces of the square tube, in this example, when the square tube front mirror is placed on the reference surface (adjustment platform), its aiming axis is parallel to the mounting reference surface. By observing the target plate in the reflector through the square tube front mirror, the position of the crosshair center on the target plate can be seen, representing the focal point of light parallel to the reference surface reflected by the reflector. Based on this, the reference light is aligned parallel to the laser's positioning reference surface.

[0046] like Figure 2 As shown in the embodiment of this application, a debugging platform is designed to provide a debugging surface. The light source of the reference light is placed on this platform, which is equipped with the light source of the reference light and a laser positioning structure. Since the light source of the reference light is very small, in specific implementations, a square tube front mirror and a reflecting focusing mirror (which can simultaneously cover the reference light and the crosshairs of the square tube front mirror's field of view) can be used. The square tube front mirror is placed on the debugging platform. The optical axis of the reference light is aligned parallel to the reference plane of the laser positioning structure.

[0047] In some embodiments, the light source of the reference light is positioned on the debugging platform, adjacent to or adjacent to the square tube front mirror. This proximity or contact, for example, with the side of the laser positioning structure, allows for the use of a smaller reflective focusing mirror, improving debugging convenience.

[0048] In some embodiments, the method further includes: after aligning the reference light with the positioning reference plane of the laser, the method further includes: setting at least two aperture stops along the optical path of the reference light, based on the adjustment platform, to limit the position of the reference light. Specifically, two pinhole aperture stops can be used, allowing the reference light to pass through the center of the pinhole aperture stops, thereby limiting the position of the reference light and preventing it from being unable to find its original optical axis position after being deflected by external forces.

[0049] In some embodiments, commissioning, based on the position between the reference light spot and the laser spot emitted by the laser to be commissioned, includes: commissioning is completed when the distance relationship between the center of the reference light spot received at different positions and the center of the laser spot emitted by the laser to be commissioned is within an allowable deviation range. Figure 3As shown, after positioning the reference beam, the laser is placed on the debugging platform and aligned with the side of the laser positioning structure to ensure a fixed position. Target plate 1 is placed near the laser exit, and the reference beam position is marked on target plate 1. The laser then projects a spot onto target plate 1. Target plate 2 is placed far from the laser exit, and the reference beam position is marked on target plate 2. The laser then projects a spot onto target plate 2. During debugging, it is only necessary to ensure that the relative positions of the laser spot and the reference beam on target plate 1 for each laser product are approximately the same as those on target plate 2 (X1≈X2, Y1≈Y2). This ensures that the laser optical axis position and parallelism meet the requirements, while also guaranteeing high consistency of the laser product's optical axis. A gridded target plate can be used for more intuitive visualization of the relative positions.

[0050] The debugging cost of this application's solution only includes the fabrication of a small laser diode and platform structure, eliminating the need for a costly large-aperture reflecting focusing mirror, thus resulting in low debugging costs. The laser optical axis debugging method of this application offers high visualization, making debugging more intuitive. It is highly portable, allowing the device to be moved as needed without requiring adjustments afterward. It boasts high debugging efficiency, simultaneously adjusting the optical axis position and parallelism. Furthermore, it offers enhanced safety, maintaining a high line of sight throughout the debugging process.

[0051] This application also proposes a laser optical axis adjustment device, including:

[0052] Test benchtop;

[0053] A reference light source is set on the test bench surface and emits reference beam;

[0054] A square tube front mirror is set on the debugging platform to observe the position of the reference light source on the target plate after passing through the reflective focusing mirror, so as to align the reference light with the positioning reference plane of the laser.

[0055] A reflecting focusing mirror is used to reflect the reference light onto the target plate;

[0056] A target plate is disposed at the focal plane of the reflecting focusing mirror, and the positioning of the reference light is completed based on the target plate;

[0057] After the reference light is positioned, the reference light source is used for the laser to be debugged, and debugging is completed based on the target plate.

[0058] The device described in this application simplifies the process of adjusting the position and parallelism of the laser optical axis. The cost includes only a small laser diode and platform structure fabrication, eliminating the need for expensive large-aperture reflecting focusing mirrors, thus resulting in low adjustment costs. The laser optical axis adjustment method of this application offers high visualization, making adjustment more intuitive. It is highly portable, allowing the device to be moved as needed without requiring further adjustments. It boasts high adjustment efficiency, simultaneously adjusting the optical axis position and parallelism. Furthermore, it offers enhanced safety, maintaining a high line of sight throughout the adjustment process. It has already been applied to the mass production of a certain laser product.

[0059] It should be noted that, in the embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0061] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0062] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims. All of these forms are within the protection scope of this application.

Claims

1. A laser optical axis adjustment method characterized by, comprising providing a reference light; leveling the reference light with a positioning reference plane of a laser based on a reflecting focusing mirror and a target plate, and completing positioning of the reference light, wherein the target plate is disposed at a focal plane of the reflecting focusing mirror; for a laser to be debugged, emitting laser light based on the reference light and its positioning; at a laser exit, receiving the laser light at at least two positions of an optical path by a target plate; based on positions between a light spot of the reference light and a light spot of the laser light emitted by the laser to be debugged, completing debugging to determine that an optical axis of the laser to be debugged and parallelism meet requirements; leveling the reference light with a positioning reference plane of a laser based on a reflecting focusing mirror and a target plate, and completing positioning of the reference light comprises: providing a debugging table, and a laser fixing structure; disposing a light source of the reference light on the debugging table, and fixing a square tube front mirror based on the laser fixing structure; observing a position of the light source of the reference light on the target plate via the reflecting focusing mirror based on a crosshair of the square tube front mirror to level the reference light with the positioning reference plane of the laser; further comprising, after leveling the reference light with the positioning reference plane of the laser: disposing at least two diaphragms on an optical path of the reference light based on the debugging table to limit positions of the reference light.

2. The laser optical axis adjustment method according to claim 1, wherein disposing the light source of the reference light on the debugging table adjacent to the square tube front mirror.

3. The laser optical axis adjustment method according to claim 1, wherein a specification of the reflecting focusing mirror meets a requirement of covering a field of view crosshair of the reference light and the square tube front mirror at the same time.

4. The laser optical axis adjustment method according to claim 1, wherein based on positions between a light spot of the reference light and a light spot of the laser light emitted by the laser to be debugged, completing debugging comprises: in a case that a distance relationship between a center of the light spot of the reference light and a center of the light spot of the laser light emitted by the laser to be debugged at different positions is within an allowable deviation range, completing debugging.

5. A laser optical axis adjustment device characterized by comprising: comprising: a debugging table; a reference light source disposed on the debugging table to emit a reference light; a square tube front mirror disposed on the debugging table to observe a position of the light source of the reference light on a target plate via a reflecting focusing mirror to level the reference light with a positioning reference plane of a laser; the reflecting focusing mirror to reflect the reference light to the target plate; the target plate disposed at a focal plane of the reflecting focusing mirror to complete positioning of the reference light based on the target plate; after completing the positioning of the reference light, the reference light source is used to complete debugging for a laser to be debugged based on the target plate; leveling the reference light with a positioning reference plane of a laser based on a reflecting focusing mirror and a target plate, and completing positioning of the reference light comprises: providing a debugging table, and a laser fixing structure; disposing a light source of the reference light on the debugging table, and fixing a square tube front mirror based on the laser fixing structure; observing a position of the light source of the reference light on the target plate via the reflecting focusing mirror based on a crosshair of the square tube front mirror to level the reference light with the positioning reference plane of the laser; Based on the cross hair of the square tube pre-lens, the position of the light source of the reference light on the target plate after the reflection focusing lens is observed to align the reference light with the positioning reference plane of the laser; Further comprising: after aligning the reference light with the positioning reference plane of the laser, further comprising: At least two diaphragms are arranged on the light path of the reference light based on the debugging table to limit the position of the reference light.

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