A method for using an optical mirror replacement auxiliary adjustment device

Abstract

The present invention discloses a method for using an optical mirror replacement auxiliary adjustment device, wherein an optical path reference module and a mirror frame clamping adjustment module are fixed on the three-dimensional lifting platform, and the whole device is lifted and lowered, and adjusted in three dimensions, front and back, and left and right. The present invention can quickly and conveniently replace and install a damaged optical mirror of a laser, and is helpful to improve the efficiency of laser development and repair.

Description

Technical Field

[0001] The invention relates to the field of laser technology, and in particular to a method for using an optical mirror replacement auxiliary adjustment device. Background Art

[0002] The rapid development and application of laser products are driving the rapid development of modern industry and improving the quality of human life. At present, laser technology is widely used in communications, medical treatment, laser industrial processing, new energy, military aerospace and other fields. The rapid development of laser application technology has put forward higher requirements on the technical indicators, performance and stability of laser products. At present, the volume, appearance and design and installation of each optical component of safe and stable laser products are highly stable and compact, reducing the weight and volume of the laser while ensuring the stable and reliable performance of the laser. In particular, in order to improve the stability of the laser system, the mechanical frames of each optical component have abandoned the optical angle adjustment structure, which is difficult to install and adjust, and puts extremely high requirements on the laser installation engineers. When the laser is installed and working, if one of the optical mirrors is damaged, the usual method is to reinstall and adjust the whole machine. Due to the lack of a better reference method, the workload of replacing the laser lens increases, resulting in a decrease in the efficiency of laser development or an increase in the difficulty of rework. How to improve the installation quality and efficiency of damaged optical parts of the laser has always been a difficulty and focus of research and development personnel.

[0003] Currently, laser installation or lens replacement mainly relies on the installation experience of engineers. Due to the precision and differentiated characteristics of the laser itself, there is currently no mature general-purpose laser auxiliary installation equipment, resulting in a long repair cycle and high maintenance cost after the laser is damaged. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for using an optical mirror replacement auxiliary adjustment device, which can quickly and conveniently replace and install a damaged optical mirror of a laser, thereby helping to improve the efficiency of laser development and repair.

[0005] In order to solve the above technical problems, the present invention provides an optical mirror replacement auxiliary adjustment device, including: a three-dimensional lifting platform, an optical path reference module, and a mirror frame clamping adjustment module; the optical path reference module and the mirror frame clamping adjustment module are fixed on the three-dimensional lifting platform, and the overall lifting, front-back, and left-right three-dimensional translation adjustment is performed.

[0006] The optical path reference module includes a rigid adapter plate, a reference base plate, a reference light source, a reflector group, a pair of parallel reflectors, and an imaging CCD; the reference base plate is placed vertically and fixed on the three-dimensional lifting platform with the help of the rigid adapter plate; the reference light source, the reflector group, the pair of parallel reflectors and the imaging CCD are respectively fixed on the working surface of the reference base plate.

[0007] Preferably, the mirror frame clamping and adjustment module includes a two-dimensional translation platform, a two-dimensional adjustment frame, a rigid vertical guide rail, and a mirror frame robotic arm; the two-dimensional translation platform is fixed on the three-dimensional lifting platform, the two-dimensional adjustment frame is placed on the two-dimensional translation platform, the rigid vertical guide rail is fixed on the two-dimensional adjustment frame, and the mirror frame robotic arm is connected with the help of the vertical guide rail.

[0008] Preferably, the optical path reference module is a compact rectangular parallelepiped module placed vertically, which is fixed on the three-dimensional adjustment platform by means of the rigid adapter plate, and can be precisely adjusted in three-dimensional translation as a whole.

[0009] Preferably, the reference light source is a high-brightness laser source with good monochromaticity, and its output end has an adjustable microlens to ensure that the reference light is reflected by the optical mirror to be replaced and installed and transmitted to the imaging CCD field of view as a small-aperture circular spot. The imaging CCD has a light attenuation function and can locate the centroid position of the light spot.

[0010] Preferably, the reflector group has a two-dimensional angle adjustment capability, which can ensure that after the reference light is projected to the appropriate position of the optical mirror to be replaced and installed and reflected, it can be incident on the parallel reflector group at a small angle for multi-path transmission and transmitted from the other end to the imaging CCD field of view.

[0011] Preferably, the pair of parallel reflectors is a pair of approximately parallel reflectors, which are fixed by means of parallel slots on the reference base plate, and the two pairs of parallel reflectors can be translated and fixed along the vertical direction of the slots.

[0012] Preferably, the mirror frame robotic arm is connected to the two-dimensional adjustment frame by means of the rigid vertical guide rail, and is fixed as a whole on the three-dimensional adjustment platform by means of the two-dimensional translation platform. The mirror frame robotic arm can realize three-dimensional translation and angle adjustment of the optical mirror to be replaced through the two-dimensional translation platform, the two-dimensional adjustment frame and the rigid vertical guide rail.

[0013] Accordingly, a method for using an optical mirror replacement auxiliary adjustment device comprises the following steps:

[0014] (1) placing the auxiliary adjustment device for optical mirror replacement, hereinafter referred to as the auxiliary device, near the optical mirror to be replaced, wherein the optical path reference module is fixed to the three-dimensional lifting platform through a rigid adapter plate, and the position of the three-dimensional lifting platform is adjusted so that one side of the parallel reflective plate pair of the optical path reference module is close to the front of the optical mirror frame to be replaced, and the reflective mirror group is located about 25 mm in front of the optical mirror frame to be replaced;

[0015] (2) Adjusting the reflector assembly so that the reference light is reflected from the undamaged part of the surface of the optical mirror to be replaced and enters the parallel reflector pair at an incident angle of about 5-10 degrees. After being reflected multiple times, the reference light is emitted from the other end of the parallel reflector pair and enters the CCD. The CCD position is fine-tuned so that the reference light is located at the center of the field of view of the CCD and calibrated;

[0016] (3) adjusting the position of the frame clamping and adjusting module on the three-dimensional lifting platform so that the frame mechanical arm on the rigid vertical guide rail can properly grasp the optical frame to be replaced;

[0017] (4) Remove the fastening screws of the optical frame, move the frame mechanical arm holding the optical frame upward along the rigid vertical guide rail, remove the optical lens to be replaced and replace it with a new lens, and use the frame mechanical arm to put the newly replaced optical frame back to the installation position along the rigid vertical guide rail;

[0018] (5) Finely adjust the angle of the two-dimensional adjustment frame and observe the position of the reflected reference light in the optical path reference, so that the reference light finally enters the initial calibration position of the CCD field of view after being reflected by the optical lens, and finally fix the optical frame.

[0019] The beneficial effects of the present invention are as follows: (1) The optical mirror replacement auxiliary adjustment device of the present invention has strong versatility and is simple and convenient to use, and can realize high-quality and rapid replacement and installation of various lasers, especially damaged optical components without adjustment structures; (2) The optical mirror replacement auxiliary adjustment device of the present invention adopts a vertical structure optical path reference module, which occupies a small space and has high reference and measurement accuracy, which is conducive to the precise installation and positioning of optical mirrors in various use environments; (3) The optical mirror replacement auxiliary adjustment device of the present invention adopts a high-precision, large-field-of-view CCD with light attenuation function to locate the centroid position of the reflected reference light spot, which has high accuracy and fast response; (4) The optical mirror replacement auxiliary adjustment device of the present invention adopts a mirror frame mechanical arm that moves along a vertical guide rail to hold the optical mirror frame for adjustment, which has good repeatability and is easy to operate; (5) When the entire auxiliary device adjusts the optical mirror, there is no need for the laser to be in a working state, which has high safety. At the same time, the entire auxiliary device has a simple structure, and its components are widely used in commercial applications, with low cost and high value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the device of the present invention.

[0021] Figure 2 It is a front view of the device of the present invention.

[0022] Figure 3 It is a schematic diagram of the principle of the device of the present invention for assisting the installation and adjustment of the optical mirror to be replaced.

[0023] Among them, 1. three-dimensional lifting platform; 201. rigid adapter plate; 202. reference base plate; 203. reference light source; 204. reflector group; 205. parallel reflector pair; 206. imaging CCD; 301. two-dimensional translation platform; 302. two-dimensional adjustment frame; 303. rigid vertical guide rail; 304. mirror frame mechanical arm. DETAILED DESCRIPTION

[0024] like Figure 1 and Figure 2 As shown, an optical mirror replacement auxiliary adjustment device includes: a three-dimensional lifting platform 1, an optical path reference module 2, and a mirror frame clamping adjustment module 3.

[0025] The optical path reference module 2 includes a rigid adapter plate 201 , a reference base plate 202 , a reference light source 203 , a reflector group 204 , a parallel reflector pair 205 , and an imaging CCD 206 .

[0026] The mirror frame clamping and adjusting module 3 includes a two-dimensional translation platform 301, a two-dimensional adjustment frame 302, a rigid vertical guide rail 303, and a mirror frame mechanical arm 304;

[0027] The optical path reference module 2 and the mirror frame clamping adjustment module 3 are fixed on the three-dimensional lifting platform 1, and can be lifted and lowered as a whole, and adjusted in three dimensions, front and back, and left and right. During operation: adjust the three-dimensional lifting platform 1, the optical path reference module 2 and the mirror frame clamping adjustment module 3, so that the optical path reference module 2 is placed in front of the optical mirror frame to be replaced, and the angle of the reflector group 204 is fine-tuned, so that the reference light emitted by the reference light source 203 is projected onto the lens to be replaced through the reflector group 204, and after reflection, it is transmitted back and forth at a small angle multiple times through the parallel reflector pair 205, and finally directly incident on the imaging CCD 206 field of view. Make the mirror frame mechanical arm 304 firmly support the optical mirror frame to be replaced, remove the optical mirror frame and replace it with a new optical mirror, and then re-place it to the position to be installed, with the help of the optical path reference module 2, fine-tune the mirror frame clamping adjustment module 3 to achieve precise angle adjustment and positioning installation of the optical mirror.

[0028] During operation: adjust the three-dimensional lifting platform, optical path reference module and frame clamping adjustment module, so that the optical path reference module is placed in front of the optical frame to be replaced and installed, and fine-tune the angle of the reflector group, so that the reference light emitted by the reference light source is projected to the lens to be replaced and installed through the reflector group, and then reflected by the parallel reflector for multiple times at a small angle, and finally incident on the imaging CCD field of view. Make the frame mechanical arm firmly support the optical frame to be replaced and installed, remove the optical frame and replace it with a new optical lens, and then re-place it to the position to be installed, and use the optical path reference module to fine-tune the frame clamping adjustment module to achieve precise angle adjustment and positioning installation of the optical lens.

[0029] like Figure 3 As shown, the method for using the optical mirror replacement auxiliary adjustment device comprises the following steps:

[0030] ① Place the optical mirror replacement auxiliary adjustment device, hereinafter referred to as the auxiliary device, near the optical mirror to be replaced, wherein the optical path reference module 2 is fixed on the three-dimensional lifting platform 1 through a rigid adapter plate, and adjust the position of the three-dimensional lifting platform 1 so that one side of the parallel reflector pair 205 of the optical path reference module 2 is close to the front of the optical mirror frame to be replaced, and the reflector group 204 is located approximately 25 mm in front of the optical mirror frame to be replaced.

[0031] ② Adjust the reflector group 204 so that the reference light is reflected by the undamaged part of the surface of the optical mirror to be replaced and enters the parallel reflector pair 205 at an incident angle of about 5-10 degrees. After being reflected multiple times, the reference light is emitted from the other end of the parallel reflector pair 205 and enters the CCD 206. Fine-tune the position of CCD 206 so that the reference light is located at the center field of view of CCD 206 and calibrated.

[0032] ③ Adjust the position of the frame clamping and adjusting module 3 on the three-dimensional lifting platform 1 so that the frame mechanical arm 304 on the rigid vertical guide rail 303 can properly grasp the optical frame to be replaced.

[0033] ④ Remove the fastening screws of the optical frame, take out the frame mechanical arm 304 holding the optical frame upward along the rigid vertical guide rail 303, remove the optical lens to be replaced and replace it with a new lens, and put the newly replaced optical frame back to the installation position along the rigid vertical guide rail 303 with the help of the frame mechanical arm 304;

[0034] ⑤ Finely adjust the angle of the two-dimensional adjustment frame 302 and observe the position of the reflected reference light in the optical path reference module 2, so that the reference light finally enters the initial calibration position of the CCD 206 field of view after being reflected by the optical lens, and finally fix the optical frame.

[0035] The following are the specific parameters for this embodiment:

[0036] The three-dimensional lifting platform 1, the optical path reference module 2 includes: a rigid adapter plate 201, a reference base plate 202, a reference light source 203, a reflector group 204, a parallel reflector pair 205, and an imaging CCD 206, and the mirror frame clamping adjustment module 3 includes: a two-dimensional translation platform 301, a two-dimensional adjustment frame 302, a rigid vertical guide rail 303, and a mirror frame mechanical arm 304;

[0037] The overall dimensions of the three-dimensional lifting platform 1 are 76mm long, 76mm wide, and 70mm high. The three directions have an adjustable stroke of 35mm each, and the work surface has M6 threaded holes regularly distributed. The rigid adapter plate 201 is a stainless steel strip, 80mm long, 30mm wide, and 20mm thick. One end has a U-shaped groove of 6.5mm×35mm, and the other end is a rack end surface for fixing the reference base plate 202. The reference base plate 202 is 200mm long, 45mm wide, and 15mm thick. The middle row of M 6 threaded holes connect the rigid adapter plate 201; the reference light source 203 is a focusable 635nm semiconductor laser with an output power of 5mW and a spot diameter of 2mm at a distance of 2m; the reflector group 204 is two two-dimensional adjustment mirror frames of 25mm×25mm×35mm, with a Ф12.7mm reflector installed; the parallel reflector pair 205 is two gold-plated copper reflector pairs, with dimensions of 190×35mm×5mm and 180mm×35mm×5mm respectively; the imaging CCD 206 is an American Data Ray CCD with a photosensitive aperture of 11.3mm×11.3mm and a pixel size of 5.3μm×5.3μm; the two-dimensional translation platform 301 is 50mm long, 50mm wide, and 10mm thick, and the two-dimensional stroke is 15mm respectively; the two-dimensional adjustment frame 302 is L-shaped with dimensions of 70mm long, 70mm wide, and 35mm thick, with a horizontal angle adjustment range of ±4 degrees and a pitch angle adjustment range of ±4 degrees; the rigid vertical guide rail 303 is 70mm long, 15mm wide, and 15mm thick, with scale values ​​and a minimum accuracy of 0.2mm; the base of the mirror frame mechanical arm 304 is a rectangular hard aluminum, 60mm long, 40mm wide, and 10mm thick, and can support optical mirror frames with an optical aperture of 5-30mm.

[0038] Experiments show that the present invention has the characteristics of compact structure, simplicity, and convenient adjustment, and can efficiently complete the replacement and installation of the damaged optical mirror of the laser, which helps to shorten the laser repair progress and improve economic benefits.

Claims

1. A method for using an optical lens replacement auxiliary adjustment device, characterized in that: The optical mirror replacement auxiliary adjustment device comprises: a three-dimensional lifting platform, an optical path reference module, and a mirror frame clamping adjustment module; the optical path reference module and the mirror frame clamping adjustment module are fixed on the three-dimensional lifting platform, and the whole is lifted and lowered, and the front and back and left and right three-dimensional translation adjustment is performed; The optical path reference module includes a rigid adapter plate, a reference base plate, a reference light source, a reflector group, a parallel reflector pair, and an imaging CCD; the reference base plate is placed vertically and fixed on the three-dimensional lifting platform by means of the rigid adapter plate; the reference light source, the reflector group, the parallel reflector pair, and the imaging CCD are respectively fixed on the working surface of the reference base plate; The mirror frame clamping and adjustment module includes a two-dimensional translation platform, a two-dimensional adjustment frame, a rigid vertical guide rail, and a mirror frame mechanical arm; the two-dimensional translation platform is fixed on the three-dimensional lifting platform, the two-dimensional adjustment frame is placed on the two-dimensional translation platform, the rigid vertical guide rail is fixed on the two-dimensional adjustment frame, and the mirror frame mechanical arm is connected with the rigid vertical guide rail; The method of use includes the following steps: (1) The optical mirror replacement auxiliary adjustment device is placed near the optical mirror to be replaced, wherein the optical path reference module is fixed to the three-dimensional lifting platform through a rigid adapter plate, and the position of the three-dimensional lifting platform is adjusted so that one side of the parallel reflective plate pair of the optical path reference module is close to the front of the optical mirror frame to be replaced, and the reflective mirror group is located about 25 mm in front of the optical mirror frame to be replaced; (2) Adjusting the reflector assembly so that the reference light is reflected from the undamaged part of the surface of the optical mirror to be replaced and enters the parallel reflector pair at an incident angle of about 5-10 degrees. After being reflected multiple times, the reference light is emitted from the other end of the parallel reflector pair and enters the imaging CCD. The imaging CCD position is fine-tuned so that the reference light is located at the center of the imaging CCD field of view and calibrated; (3) adjusting the position of the frame clamping and adjusting module on the three-dimensional lifting platform so that the frame mechanical arm on the rigid vertical guide rail can properly grasp the optical frame to be replaced; (4) removing the fastening screws of the optical frame to be replaced, taking out the frame mechanical arm holding the optical frame to be replaced upward along the rigid vertical guide rail, removing the optical lens to be replaced and replacing it with a new lens, and placing the newly replaced optical frame back to the installation position along the rigid vertical guide rail with the help of the frame mechanical arm; (5) Fine-tune the angle of the two-dimensional adjustment frame and observe the position of the reflected reference light in the optical path reference module, so that the reference light finally enters the initial calibration position of the imaging CCD field of view after being reflected by the new lens, and finally fix the newly replaced optical frame.

2. The method for using the optical lens replacement auxiliary adjustment device according to claim 1, characterized in that: The optical path reference module is a compact rectangular parallelepiped module placed vertically, which is fixed on the three-dimensional lifting platform with the help of the rigid adapter plate, and the whole module is precisely adjusted in three-dimensional translation.

3. The method for using the optical lens replacement auxiliary adjustment device according to claim 1, characterized in that: The reference light source is a high-brightness laser source with good monochromaticity. Its output end has an adjustable microlens to ensure that the reference light is reflected by the optical mirror to be replaced and transmitted to the imaging CCD field of view as a small-aperture circular spot. The imaging CCD has a light attenuation function to locate the centroid of the spot.

4. The method for using the optical lens replacement auxiliary adjustment device according to claim 1, characterized in that: The reflector group has the ability of two-dimensional angle adjustment, ensuring that after the reference light is projected to the appropriate position of the optical mirror to be replaced and reflected, it can be incident on the parallel reflector at a small angle and transmitted in multiple rounds inside and transmitted from the other end to the imaging CCD field of view.

5. The method for using the optical lens replacement auxiliary adjustment device according to claim 1, characterized in that: The parallel reflector pair is an approximately parallel reflector pair, which is fixed by means of the parallel clamping grooves on the reference bottom plate, and the parallel reflector pair is translated and fixed along the vertical direction of the parallel clamping grooves.

6. The method for using the optical lens replacement auxiliary adjustment device according to claim 1, characterized in that: The mirror frame robotic arm is connected to the two-dimensional adjustment frame with the help of the rigid vertical guide rail, and is fixed as a whole on the three-dimensional lifting platform with the help of the two-dimensional translation platform. The mirror frame robotic arm realizes the three-dimensional translation and angle adjustment of the optical mirror to be replaced through the two-dimensional translation platform, the two-dimensional adjustment frame and the rigid vertical guide rail.

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