DEVICE, METHOD AND APPARATUS FOR LIGHT BEAM COLLIMATION, STORAGE MEDIUM AND ELECTRONIC DEVICE

Abstract

An embodiment of the present invention provides a device, a method, and an apparatus for light beam collimation, a storage medium, and an electronic device, wherein the device comprises a first collimation lens group, a light beam focusing lens group, and a second collimation lens group, wherein the first collimation lens group is used to collimate the initial light beam; and wherein the light beam focusing lens group is used to focus the collimated light beam; and wherein the second collimation lens group is used to collimate the focused light beam. The present invention improves the light beam detection efficiency of the light beam detection device.

Description

TECHNICAL FIELD

[0001] An embodiment of the present invention relates to the field of laser processing, in particular to an apparatus, a method and a device for light beam collimation, a storage medium and an electronic device. STATE OF THE ART

[0002] In recent years, with the rapid development of manufacturing technology, lasers have gradually been applied in various fields. Due to their advantages such as high brightness, high conversion efficiency, small size, long lifetime, and good laser beam quality, they are widely used in material processing such as marking, punching, welding, cutting, cleaning, coating, etc., as well as in optical communications, spectral imaging, medical treatment, and other fields.As the precision requirements in industrial processing technology become higher and higher, the requirements for the spatial distribution of the laser beam, the energy distribution and other light beam information also become higher and higher, and some practical applications require that the laser energy emitted by the laser has a certain form of distribution and the spatial pattern has a certain distribution state, which leads to analysis and measurement of the laser beam.

[0003] When conducting light beam analysis and measurement in the industry, it is necessary to perform the light beam scaling process for the light beam to be measured and to perform the collimation process by using a collimated light beam system, so that the collimated light beam can meet the requirements of the light beam input of the measuring instrument. However, due to the use of different laser types, the light spot size of the laser output beam is also different. This results in a significant difference between the light spot sizes of the laser output beam and the back-end focal lengths after collimation with the collimating optical systems with the same parameters.Therefore, before analyzing and measuring different light beams, the collimating optical systems with different parameters need to be manually replaced, which is very complicated, and the back-end optical paths are inconsistent after replacing different collimating optical systems, so that the collimated light beams do not meet the requirements of light beam analysis and measurement instruments.

[0004] Regarding the problem of low light beam detection efficiency of light beam detection devices in related technologies, no effective solution has been developed so far. DISCLOSURE OF THE INVENTIONTechnical Problem

[0005] An embodiment of the present invention provides a light beam collimation apparatus, method and device, a storage medium, and an electronic device to solve at least one problem with the low light beam detection efficiency of existing light beam detection devices in related technologies. Technical solution

[0006] According to one embodiment of the present invention, there is provided a light beam collimation device comprising: a first collimating lens group, a light beam focusing lens group, and a second collimating lens group, wherein the light beam focusing lens group is arranged between the first collimating lens group and the second collimating lens group, and wherein the optical paths of the first collimating lens group, the light beam focusing lens group, and the second collimating lens group are coaxial, and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed;and wherein the first collimating lens group is used to collimate the initial light beam to obtain a collimated light beam; and wherein the light beam focusing lens group is used to focus the collimated light beam to obtain a focused light beam; and wherein the second collimating lens group is used to collimate the focused light beam to obtain a target light beam having a target light spot size, and wherein the target light beam is used to be input to a light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size.

[0007] Optionally, the first collimating lens group comprises a first lens and a second lens, wherein a distance between the first lens and the second lens is a fixed value; wherein the light beam focusing lens group comprises a third lens and a fourth lens, and wherein a distance between the third lens and the fourth lens is a fixed value; and wherein the second collimating lens group comprises a fifth lens, and wherein the focal point of the fifth lens coincides with the focal point of the focused light beam.

[0008] Optionally, the refractive indices of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are each a target refractive index falling within a target refractive index interval, wherein the lens satisfies a target dispersion condition for the light beam in the target refractive index interval.

[0009] Optionally, the radius of curvature of the light beam input surface of the first lens is positive, wherein the radius of curvature of the light beam output surface of the first lens is positive; and wherein the radius of curvature of the light beam input surface of the second lens is positive, and wherein the radius of curvature of the light beam output surface of the second lens is negative; and wherein the radius of curvature of the light beam input surface of the third lens is negative, and wherein the radius of curvature of the light beam output surface of the third lens is negative; and wherein the radius of curvature of the light beam input surface of the fourth lens is positive, and wherein the radius of curvature of the light beam output surface of the fourth lens is positive; and wherein the radius of curvature of the light beam input surface of the fifth lens is positive, and wherein the radius of curvature of the light beam output surface of the fifth lens is positive.

[0010] Optionally, the light beam input surface of the first lens is aspherical, while the light beam output surface of the third lens is aspherical.

[0011] Optionally, the target light spot size is less than or equal to the target interface size.

[0012] Optionally, the distance between the first lens and the second lens is a fixed value set according to the refractive index of the lens, the thickness of the lens, or the focal length of the lens.

[0013] Optionally, the distance between the third lens and the fourth lens is a fixed value set according to the refractive index of the lens, the thickness of the lens, or the focal length of the lens.

[0014] Optionally, the refractive index of the target refractive index interval is greater than or equal to 1.45 and less than or equal to 1.56.

[0015] Optionally, the target dispersion condition is used to indicate the quality of the light beam emitted by the lens.

[0016] According to one embodiment of the present invention, a light beam collimation method is provided, comprising: detecting a target light beam parameter of an initial light beam and a target device parameter of a light beam detection device, wherein the light beam detection device is used to detect a light beam output from the light beam collimation device, and wherein the light beam collimation device is used to collimate the initial light beam, and wherein the light beam collimation device comprises a first collimation lens group, a light beam focusing lens group, and a second collimation lens group, and wherein the light beam focusing lens group is arranged between the first collimation lens group and the second collimation lens group, and wherein the optical paths of the first collimation lens group,the light beam focusing lens group and the second collimating lens group are coaxial, and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed; determining a first distance value for the first distance and a second distance value for the second distance in accordance with the target light beam parameter and the target device parameter; adjusting the first collimating lens group and the light beam focusing lens group in accordance with the first distance value and the second distance value to obtain a collimating device for a target light beam; driving the initial light beam to input to the collimating device for a target light beam,to obtain a target light beam output from the target light beam collimation device having the target light spot size, and wherein the target light beam is used to be input to the light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size.

[0017] Optionally, determining a first distance value for the first distance and a second distance value for the second distance in accordance with the target light beam parameter and the target device parameter comprises: determining a focal length value of the focused target light beam corresponding to the target light beam parameter from among the light beam parameter and focal length value of the focused light beam of the light beam focusing lens group having a corresponding relationship, wherein the focal length value of the focused light beam is used to indicate a distance value between the focal point of the light beam focused by the light beam focusing lens group and the center point of the focusing lens group;Determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the second distance;

[0018] Optionally, determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group, the device parameter and the first distance, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter and the second distance, comprises: calculating the first distance value according to a first formula, wherein the first formula D1=-a1E 2-a2E+a3, and where D1 is the first distance value, a1, a2 and a3 are coefficients corresponding to the target device parameter, and E is a conversion factor, and where the conversion factor is calculated according to a second formula, and where the second formula f=b1E 2 +b2E+b3, and where f is the focal length value of the focused target light beam, b1, b2, and b3 are coefficients corresponding to the target device parameter; calculating the second distance value according to a third formula, the third formula being D2=c1E-c2, and where D2 is the second distance value, and c1 and c2 are coefficients corresponding to the target device parameter.

[0019] Optionally, the target light beam parameter includes a characteristic time domain parameter, a characteristic space domain parameter, and a characteristic frequency domain parameter.

[0020] Optionally, the second distance value is a distance value between the light beam focusing lens group and the second collimating lens group when the focal point of the focused target light beam with the target light beam parameter coincides with the focal point of the second collimating lens group.

[0021] According to a further embodiment of the present invention, there is further provided a light beam collimation device, comprising: a detection module for detecting a target light beam parameter of an initial light beam and a target device parameter of a light beam detection device, wherein the light beam detection device is used to detect a light beam output from the light beam collimation device, and wherein the light beam collimation device is used to collimate the initial light beam, and wherein the light beam collimation device comprises a first collimation lens group, a light beam focusing lens group, and a second collimation lens group, and wherein the light beam focusing lens group is arranged between the first collimation lens group and the second collimation lens group, and wherein the optical paths of the first collimation lens group,the light beam focusing lens group and the second collimating lens group are coaxial, and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed; a determination module for determining a first distance value for the first distance and a second distance value for the second distance in accordance with the target light beam parameter and the target device parameter; an adjustment module for adjusting the first collimating lens group and the light beam focusing lens group in accordance with the first distance value and the second distance value,to obtain a collimator for a target light beam; a control module for controlling the initial light beam to be input to the collimator for a target light beam to obtain a target light beam output from the collimator for a target light beam with the target light spot size, and wherein the target light beam is used to be input to the light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size.

[0022] Optionally, the determination module includes the following: a first determination unit for determining a focal length value of the focused target light beam corresponding to the target light beam parameter from among the light beam parameter and the focal length value of the focused light beam of the light beam focusing lens group having a corresponding relationship, wherein the focal length value of the focused light beam is used to indicate a distance value between the focal point of the light beam focused by the light beam focusing lens group and the center point of the focusing lens group; a second determination unit for determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance in a correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the second distance.

[0023] Optionally, the second determination unit is used for the following purposes: Calculating the first distance value according to a first formula, where the first formula D1=-a1E 2-a2E+a3, and where D1 is the first distance value, a1, a2 and a3 are coefficients corresponding to the target device parameter, and E is a conversion factor, and where the conversion factor is calculated according to a second formula, and where the second formula f=b1E 2 +b2E+b3, and where f is the focal length value of the focused target light beam, b1, b2, and b3 are coefficients corresponding to the target device parameter; calculating the second distance value according to a third formula, where the third formula is D2=c1E-c2, and where D2 is the second distance value, and c1 and c2 are coefficients corresponding to the target device parameter.

[0024] According to a further embodiment of the present invention, there is further provided a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and wherein the computer program is set to implement the steps in any above embodiment of the method when executed.

[0025] According to a further embodiment of the present invention, there is further provided an electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, and wherein the processor is configured to execute the computer program to implement the steps in any above embodiment of the method. Advantages

[0026] According to the present invention, a light beam collimation device comprises a first collimating lens group, a light beam focusing lens group, and a second collimating lens group, wherein the light beam focusing lens group is arranged between the first collimating lens group and the second collimating lens group, and wherein the optical paths of the first collimating lens group, the light beam focusing lens group, and the second collimating lens group are coaxial, and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed; and wherein the first collimating lens group is used to collimate the initial light beam,to obtain a collimated light beam; and wherein the light beam focusing lens group is used to focus the collimated light beam to obtain a focused light beam; and wherein the second collimating lens group is used to collimate the focused light beam to obtain a target light beam with a target light spot size, and wherein the target light beam is used to be input to a light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size. Namely, the light beam collimating device comprises a first collimating lens group, a light beam focusing lens group, and a second collimating lens group whose optical paths are coaxial, wherein the first collimating lens group is used to collimate the initial light beam to obtain a collimated light beam.and wherein the light beam focusing lens group is used to focus the collimated light beam to obtain a focused light beam, and wherein the second collimating lens group is used to collimate the focused light beam to obtain a target light beam. Since the first distance between the first collimating lens group and the light beam focusing lens group is adjustable and the second distance between the light beam focusing lens group and the second collimating lens group is adjustable, the target light spot size of the target light beam obtained by the initial light beam passing successively through the first collimating lens group, the light beam focusing lens group, and the second collimating lens group is caused to match the interface size of the light beam detection device. Since the position of the second collimating lens group is fixed, it is ensured,That a change in the position of the optical paths after the light beam collimation device is not required, while a target light beam that meets the target interface size requirement is obtained after collimating various initial light beams to collimate an initial light beam into a target light beam whose light spot size matches the interface size of the light beam detection device by moving the position of the lens groups in the light beam collimation device. A change in the position of the optical paths after the light beam collimation device is also not required to realize that the light beam detection device detects the initial light beam efficiently and quickly in accordance with the output target light beam. Therefore, a problem with the low light beam detection efficiency of light beam detection devices in related technologies is solved.to improve the light beam detection efficiency of the light beam detection device. PRESENTATION OF THE INVENTION Fig. 1 shows a schematic diagram of a light beam collimation device in an embodiment of the present invention. Fig. Figure 2 shows a schematic diagram of an optional light beam collimation in one embodiment of the present invention. Fig. 3 shows a block diagram of a hardware structure of a mobile terminal of a light beam collimation method in an embodiment of the present invention. Fig. 4 shows a flowchart of a light beam collimation method in an embodiment of the present invention. Fig. 5 shows a schematic diagram of an internal lens of an optional light beam collimation device in one embodiment of the present invention. Fig. 6 shows a schematic diagram of an optional zoom curve in one embodiment of the present invention. Fig. 7 shows a schematic diagram of the point spread function at the longest and shortest focal lengths of a light beam collimation device in one embodiment of the present invention. Fig. 8 shows an MTF diagram of the transfer function at the longest and shortest focal lengths of a light beam collimation device in an embodiment of the present invention. Fig. 9 shows a structural block diagram of a light beam collimation device in an embodiment of the present invention. CONCRETE EMBODIMENTS

[0027] The present invention is explained in more detail below in connection with figures and embodiments.

[0028] It should be noted that the terms "first", "second", etc., are used in the description and claims, as well as the accompanying drawings, of the present invention to distinguish similar objects from one another and should not necessarily be used to explain a particular sequence or priority.

[0029] In the present embodiment, a light beam collimation device is provided, Fig. 1 shows a schematic diagram of a light beam collimation device in an embodiment of the present invention. As in Fig. 1, the device comprises a first collimating lens group 12, a light beam focusing lens group 14 and a second collimating lens group 16, wherein the light beam focusing lens group 14 is arranged between the first collimating lens group 12 and the second collimating lens group 16, and wherein the optical paths of the first collimating lens group 12, the light beam focusing lens group 14, and the second collimating lens group 16 are coaxial, and wherein a first distance D1 between the first collimating lens group 12 and the light beam focusing lens group 14 and a second distance D2 between the light beam focusing lens group 14 and the second collimating lens group 16 are set to allow adjustment, and wherein the position of the second collimating lens group 16 is fixed; and wherein the first collimating lens group 12 is used to collimate the initial light beam A to obtain a collimated light beam; and wherein the light beam focusing lens group 14 is used to focus the collimated light beam to obtain a focused light beam; and wherein the second collimation lens group 16 is used to collimate the focused light beam to obtain a target light beam B having a target light spot size, and wherein the target light beam B is used to be input to a light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size.

[0030] Optionally, the first collimating lens group 12 in the present embodiment may be a lens group consisting of collimating lenses, but is not limited thereto, or the first collimating lens group may also be a lens group consisting of collimating lenses and focusing lenses, which is not limited in this scheme.

[0031] Optionally, the focusing lens in the present embodiment may be a lens group consisting of focusing lenses, or the focusing lens may also be a lens group consisting of collimating lenses and focusing lenses, which is not limited in this scheme.

[0032] Optionally, the second collimating lens group in the present embodiment may be a lens group consisting of collimating lenses, or the second collimating lens group may also be a lens group consisting of collimating lenses and focusing lenses, which is not limited in this scheme.

[0033] Optionally, in the present embodiment, the target light spot size may be less than or equal to the target interface size, but is not limited thereto.

[0034] Optionally, in the present embodiment, by adjusting the first distance D1 and the second distance D2, the target light spot size of the output target light beam B is adjusted. Compared with the initial light spot size of the initial light beam A, the target light spot size after adjustment may be enlarged, reduced, and the same, but is not limited to this, without the present scheme being limited thereto.

[0035] Optionally, in the present embodiment, the light beam detection device is used to detect the attribute information of the initial light beam A in accordance with the target light beam B. The attribute information may include the quality of the light beam, the spatial distribution of the light beam, the energy distribution of the light beam, etc., but the present scheme is not limited thereto.

[0036] The conventional fiber laser collimation lens is a collimation head, and is then replaced with different collimation lenses according to different usage needs. In actual use, multiple light spots are required, which cannot meet all usage requirements. To meet the usage needs of the semiconductor laser, the above embodiment adjusts the focal length of the light beam collimation device by adjusting the distance between the lens groups to adjust the light spot size after collimation. Fig. Figure 2 shows a schematic diagram of an optional light beam collimation in one embodiment of the present invention. As in Fig. As shown in Figure 2, when collimating the initial light beam A with the same light beam parameter, the first distance D1 between the first collimating lens group 12 and the light beam focusing lens group 14 and the second distance D2 between the light beam focusing lens group 14 and the second collimating lens group 16 are adjusted to obtain a target light beam B of different light spot sizes. For example, if the light spot size of the initial light spot needs to be reduced, the first distance D1 is increased and the second distance D2 is reduced (namely, the light beam focusing lens group 14 is moved to the second collimating lens group 16 side). If the light spot size of the initial light spot needs to be increased, the first distance D1 is reduced and the second distance D2 is increased (namely, the light beam focusing lens group 14 is moved to the second collimating lens group 16 side).

[0037] With the above embodiment, by adjusting the position of the lens group and the focal length of the light beam collimator, it is realized to adjust the light spot size of the light beam under the condition that the light beam collimator is not changed without affecting the rear axis intercept of the light beam collimator, so as to realize the output of the fixed rear axis intercept of the light beam collimator.

[0038] With the above steps, the light beam collimation device includes a first collimating lens group 12, a light beam focusing lens group 14, and a second collimating lens group 16 whose optical paths are coaxial. The first collimating lens group 12 is used to collimate the initial light beam A to obtain a collimated light beam; and the light beam focusing lens group 14 is used to focus the collimated light beam to obtain a focused light beam. and wherein the second collimating lens group 16 is used to collimate the focused light beam to obtain a target light beam B, since the first distance D1 between the first collimating lens group 12 and the light beam focusing lens group 14 is adjustable and the second distance D2 between the light beam focusing lens group 14 and the second collimating lens group 16 is adjustable, it is effected,that the target light spot size of the target light beam obtained by successively passing the initial light beam B through the first collimation lens group 12, the light beam focusing lens group 14, and the second collimation lens group 16 matches the interface size of the light beam detection device. Since the position of the second collimation lens group 16 is fixed, it is ensured that a change in the position of the optical paths after the light beam collimation device is not required, while a target light beam B that meets the target interface size requirement is obtained after collimating various initial light beams. By moving the position of the lens groups in the light beam collimation device, an initial light beam A can be collimated into a target light beam B whose light spot size matches the interface size of the light beam detection device.And a change in the position of the optical paths after the light beam collimation device is also not required, so that the light beam detection device can efficiently and quickly detect the initial light beam A in accordance with the output target light beam B. Therefore, a problem with the low light beam detection efficiency of light beam detection devices is solved in related technologies to improve the light beam detection efficiency of the light beam detection device.

[0039] In an optional embodiment, the first collimating lens group 12 comprises a first lens 121 and a second lens 122, wherein a distance between the first lens 121 and the second lens 122 is a fixed value; wherein the light beam focusing lens group 14 includes a third lens 141 and a fourth lens 142, and wherein a distance between the third lens 141 and the fourth lens 142 is a fixed value; and wherein the second collimating lens group 16 comprises a fifth lens 161, and wherein the focal point of the fifth lens 161 coincides with the focal point of the focused light beam.

[0040] Optionally, in the present embodiment, the distance between the first lens 121 and the second lens 122 may be a fixed value set according to the refractive index of the lens, the thickness of the lens, or the focal length of the lens, without being limited thereto.

[0041] Optionally, in the present embodiment, the distance between the third lens 141 and the fourth lens 142 may be a fixed value set according to the refractive index of the lens, the thickness of the lens, or the focal length of the lens, without being limited thereto.

[0042] Optionally, in the present embodiment, to ensure the transmission of a light beam, the first lens 121, the second lens 122, the third lens 141, the fourth lens 142, and the fifth lens 161 may be lenses coated with a high-transmittance film that is highly transmissive to a specific property of the light beam, such as, but not limited to, lenses coated with a high-transmittance film in the near-infrared range. Similarly, to filter a specific light beam, the first lens 121, the second lens 122, the third lens 141, the fourth lens 142, and the fifth lens 161 may be lenses coated with a high-resistance film that has high resistance to the light beam with specific properties.

[0043] In an optional embodiment, the refractive indices of the first lens 121, the second lens 122, the third lens 141, the fourth lens 142, and the fifth lens 161 are each a target refractive index falling within a target refractive index interval, wherein the lens satisfies a target dispersion condition for the light beam in the target refractive index interval.

[0044] Optionally, in the present embodiment, the target dispersion condition is used to indicate the quality of the light beam output from the lens. When the target dispersion condition is satisfied, the light beam output from the lens is of better quality, the dispersion is not obvious, and the image quality is better. The target dispersion condition may be a dispersion coefficient of the lens within a certain interval, but is not limited to this.

[0045] Optionally, in the present embodiment, the refractive index of the target refractive index interval may be greater than or equal to 1.45 and less than or equal to 1.56, but is not limited thereto.

[0046] Optionally, in the present embodiment, the refractive indices of the first lens 121, the second lens 122, the third lens 141, the fourth lens 142, and the fifth lens 161 are all target thicknesses.

[0047] In an optional embodiment, the radius of curvature of the light beam input surface of the first lens 121 is positive, and the radius of curvature of the light beam output surface of the first lens 121 is positive; and wherein the radius of curvature of the light beam input surface of the second lens 122 is positive, and wherein the radius of curvature of the light beam output surface of the second lens 122 is negative; and wherein the radius of curvature of the light beam input surface of the third lens 141 is negative, and wherein the radius of curvature of the light beam output surface of the third lens 141 is negative; and wherein the radius of curvature of the light beam input surface of the fourth lens 142 is positive, and wherein the radius of curvature of the light beam output surface of the fourth lens 142 is positive; and wherein the radius of curvature of the light beam input surface of the fifth lens 161 is positive, and wherein the radius of curvature of the light beam output surface of the fifth lens 161 is positive.

[0048] Optionally, in the present embodiment, the radius of curvature of the light beam input surface of the first lens 121 is greater than or equal to 8.09875 mm and less than or equal to 8.95125 mm, wherein the radius of curvature of the light beam output surface of the first lens 121 is greater than or equal to 6.94735 mm and less than or equal to 7.67865 mm; and wherein the radius of curvature of the light beam input surface of the second lens 122 is greater than or equal to 14.73659 mm and less than or equal to 16.28781 mm, and wherein the radius of curvature of the light beam output surface of the second lens 122 is greater than or equal to 11.93523 mm and less than or equal to 13.19157 mm; and wherein the radius of curvature of the light beam input surface of the third lens 141 is greater than or equal to 40.750535 mm and less than or equal to 45.040065 mm, and wherein the radius of curvature of the light beam output surface of the third lens 141 is greater than or equal to 529.576455 mm and less than or equal to 585.321345 mm;and wherein the radius of curvature of the light beam input surface of the fourth lens 142 is greater than or equal to 9.3594 mm and less than or equal to 10.3446 mm, and wherein the radius of curvature of the light beam output surface of the fourth lens 142 is greater than or equal to 7.536825 mm and less than or equal to 8.330175 mm; and wherein the radius of curvature of the light beam input surface of the fifth lens 161 is greater than or equal to 24.827585 mm and less than or equal to 27.441015 mm, and wherein the radius of curvature of the light beam output surface of the fifth lens 161 is greater than or equal to 37.387345 mm and less than or equal to 41.322855 mm.

[0049] In an optional embodiment, the light beam input surface of the first lens 121 is aspherical, and the light beam output surface of the third lens 141 is aspherical.

[0050] Optionally, in the present embodiment, in order to reduce the image aberration and prevent beam distortion, the light beam input surface of the first lens 121 and the light beam output surface of the third lens 141 may be set to an aspherical surface, and the light beam input surface of the first lens 121 and the light beam output surface of the third lens 141 may be set to the same aspherical coefficient, or they may be set to different aspherical coefficients, for example, the light beam input surface of the first lens 121 and the light beam output surface of the third lens 141 may be set to the same aspherical coefficient, which is set to a fourth-order coefficient of -8.3867*10 -6 , a sixth-order coefficient of -4.5956*10 -6 and an eighth-order coefficient of -6.8107*10 -8 is set.

[0051] The method provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal, or a similar computing device. Running on a mobile terminal as an example, Fig. 3 is a block diagram of a hardware structure of a mobile terminal of a light beam collimation method in an embodiment of the present invention. As in Fig. 3, the mobile device can have one or more (in Fig. 3, only one is shown) processors 302 (the processors 302 may include, but are not limited to, processing devices such as microprocessors MCUs or programmable logic devices such as FPGAs) and memory 304 for storing data, and among these, the aforementioned mobile terminal may also include a transmission device 306 for the communication function and an input / output device 308. As one of ordinary skill in the art can understand, the device shown in Fig. The structure shown in Figure 3 is merely illustrative and does not limit the structure of the above mobile device. For example, the mobile device may have more or fewer components than in Fig. 3 or a different configuration than shown in Fig. 3 have shown.

[0052] The memory 304 may be used to store a computer program, e.g., a software program and an application software module, such as the computer program corresponding to the light beam collimation method in the embodiment of the present invention, and the processor 302 performs various functional applications and data processing, e.g., it implements the method described above by executing the computer program stored in the memory 304. The memory 304 may comprise high-speed random access memory, but may also comprise non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 304 may also comprise memory that is remote relative to the processor 302, and these remote memories may be connected to the mobile terminal via a network.Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communications network, and combinations thereof.

[0053] The transmission device 306 is used to receive or send data over a network. Specific examples of the aforementioned network may be a wireless network provided by a communications provider of the mobile terminal. In one example, the transmission device 306 includes a network interface controller (NIC) that can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 306 may be a radio frequency (RF) module used for wireless communication with the Internet.

[0054] In the present embodiment, a light beam collimation method is provided, Fig. Fig. 4 shows a flowchart of a light beam collimation method in an embodiment of the present invention, as shown in Fig. As shown in Figure 4, the process includes the following steps: Step S402: Detecting a target light beam parameter of an initial light beam A and a target device parameter of a light beam detection device, wherein the light beam detection device is used to detect a light beam output from the light beam collimation device, and wherein the light beam collimation device is used to collimate the initial light beam A, and wherein the light beam collimation device comprises a first collimation lens group 12, a light beam focusing lens group 14, and a second collimation lens group 16, and wherein the light beam focusing lens group 14 is arranged between the first collimation lens group 12 and the second collimation lens group 16, and wherein the optical paths of the first collimation lens group 12, the light beam focusing lens group 14, and the second collimation lens group 16 are coaxial,and wherein a first distance D1 between the first collimating lens group 12 and the light beam focusing lens group 14 and a second distance D2 between the light beam focusing lens group 14 and the second collimating lens group 16 are set to allow adjustment, and wherein the position of the second collimating lens group 16 is fixed;, Step S404: Determining a first distance value for the first distance D1 and a second distance value for the second distance D2 in accordance with the target light beam parameter and the target device parameter; Step S406: Adjusting the first collimating lens group 12 and the light beam focusing lens group 14 in accordance with the first distance value and the second distance value to obtain a collimating device for a target light beam; Step S408: Driving the initial light beam A to be input to the target light beam collimator to obtain a target light beam B output from the target light beam collimator having the target light spot size, and wherein the target light beam B is used to be input to the light beam detecting device, and wherein the target interface size of the light beam detecting device matches the target light spot size.

[0055] With the above steps, the light beam collimation device comprises a first collimating lens group 12, a light beam focusing lens group 14 and a second collimating lens group 16 whose optical paths are coaxial, wherein the first collimating lens group 12 is used to collimate the initial light beam A to obtain a collimated light beam, and wherein the light beam focusing lens group 14 is used to focus the collimated light beam to obtain a focused light beam, and wherein the second collimating lens group 16 is used to collimate the focused light beam to obtain a target light beam B, since the first distance D1 between the first collimating lens group 12 and the light beam focusing lens group 14 is adjustable and the second distance D2 between the light beam focusing lens group 14 and the second Collimation lens group 16 is adjustable,A first distance value for the first distance and a second distance value for the second distance are determined in accordance with the target light beam parameter and the target device parameter, so that the target light spot size of the target light beam B, which is obtained such that the initial light beam A successively passes through the first collimation lens group 12, the light beam focusing lens group 14, and the second collimation lens group 16, which have undergone adjustment of the first distance D1 and the second distance D2, is caused to match the interface size of the light beam detection device. Since the position of the second collimation lens group 16 is fixed, it is ensured that a change in the position of the optical paths after the light beam collimation device is not required, while a target light beam B that meets the requirement for the target interface size is obtained.after collimating different initial light beams A, so that the light beam detection device can efficiently and quickly detect the initial light beam A in accordance with the output target light beam B, therefore, a problem with the low light beam detection efficiency of light beam detection devices is solved in related technologies to improve the light beam detection efficiency of the light beam detection device.

[0056] In the technical solution provided by step S402 above, the target light beam parameter may include, but is not limited to, a time-domain characteristic parameter, a spatial-domain characteristic parameter, and a frequency-domain characteristic parameter. The time-domain characteristic parameter may include, but is not limited to, a pulse waveform, a peak power, a repetition power, an instantaneous power, etc., and the spatial-domain characteristic parameter may include, but is not limited to, a spot diameter, a dispersion angle, a spot pattern, a near-field and a far-field distribution, etc., and the frequency-domain characteristic parameter may include, but is not limited to, a wavelength, a spectral line width, frequency stability, coherence, etc., without the present scheme being limited to these.

[0057] Optionally, in the present embodiment, the target device parameter may include a target interface size of the target interface of the device for receiving the target light beam B and a distance between the device and the light beam detection device (such as a distance between the target interface of the device and the center of the light beam detection device or a distance between the target interface and the second collimation lens group 16).

[0058] In the technical solution provided by the above step S404, different light beam parameters result in different distances between the focal point of the focused light beam obtained by focusing the light beam by the light beam focusing lens group 14 and the focusing lens group, which results in different light spot sizes of the focused light beam obtained by focusing the light beams with different light beam parameters by the same focusing lens group and irradiated onto the second collimating lens, and thus results in different spot sizes of the collimated target light beam B, therefore different light beam parameters and different device parameters correspond to different values ​​for the first distance and different values ​​for the second distance.

[0059] In the technical solution provided by the above step S406, the rear intercept of the target collimator after adjustment is the same as the rear intercept of the collimator before adjustment.

[0060] In the technical solution provided by the above step S408, the target light spot size of the target light beam B may be enlarged, reduced, and unchanged compared to the initial light spot size of the initial light beam A.

[0061] Optionally, in the present embodiment, the target light spot size may be less than or equal to the target interface size.

[0062] In an optional embodiment, determining a first distance value for the first distance D1 and a second distance value for the second distance D2 in accordance with the target light beam parameter and the target device parameter comprises: Determining a focal length value of the focused target light beam corresponding to the target light beam parameter from among the light beam parameter and the focal length value of the focused light beam of the light beam focusing lens group 14 having a corresponding relationship, wherein the focal length value of the focused light beam is used to indicate a distance value between the focal point of the light beam focused by the light beam focusing lens group 14 and the center point of the focusing lens group;

[0063] Determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group 14, the device parameter, and the first distance D1, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the second distance D2.

[0064] Optionally, in the present embodiment, the second distance value may be a distance value between the light beam focusing lens group 14 and the second collimating lens group 16 when the focal point of the focused target light beam with the target light beam parameter coincides with the focal point of the second collimating lens group 16.

[0065] In an optional embodiment, determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group 14, the device parameter, and the first distance D1, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group 14, the device parameter, and the second distance D2 include the following: Calculating the first distance value according to a first formula, wherein the first formula D1=-a1E 2-a2E+a3, and where D1 is the first distance value, a1, a2 and a3 are coefficients corresponding to the target device parameter, and E is a conversion factor, and where the conversion factor is calculated according to a second formula, and where the second formula f=b1E 2 +b2E+b3, and where f is the focal length value of the focused target light beam, b1, b2 and b3 are coefficients corresponding to the target device parameter; Calculating the second distance value according to a third formula, the third formula being D2=c1E-c2, and where D2 is the second distance value and c1 and c2 are coefficients corresponding to the target device parameter.

[0066] Optionally, in the present embodiment, a1, a2, a3, b1, b2, b3, c1 and c2 may be any natural number, but are not limited thereto.

[0067] The position of the lens group in the light beam collimation device is adjustable. When the initial light beam A needs to be collimated, the position of the lens group is adjusted in accordance with the light beam parameter and the interface size of the light beam detection device to automatically convert the initial light beam A into a target light beam B available to the light beam detection device, thereby greatly improving the efficiency of the light beam detection device. Fig. Figure 5 shows a schematic diagram of an internal lens of an optional light beam collimation device in an embodiment of the present invention, as shown in Fig. As shown in Figure 5, the target beam spot size required by the light beam collimator is 6mm-10mm. In order for the light beam collimator to meet the collimation requirements of the output light beams of most current fiber lasers, the beam spot size of the objective lens of the light beam collimator is set within a range of 13.65mm-22.73mm, the collimation degree of the light beam is less than 4 mrad, and the applicable wavelength is 915nm-1100nm. The numerical aperture (NA) is 0.22, which is consistent with the parameters of most current fiber lasers. The distance from the fiber exit to the first piece of the pre-collimation group is 16.27mm, the material is UV-fused quartz, which can meet the requirements of high-power use of the fiber laser, nd (refractive index) is 1.4585, and Vd (dispersion coefficient) is 67.821.The light beam collimation device includes a first collimating lens group 12, a light beam focusing lens group 14, and a second collimating lens group 16. The first collimating lens group 12 includes a first lens 121 and a second lens 122, the light beam focusing lens group 14 includes a third lens 141 and a fourth lens 142, and the second collimating lens group 16 includes a fifth lens 161. The light beam input surface of the first lens 121 is an aspherical surface with a radius of curvature of 8.525 mm ±5% and a fourth-order aspheric coefficient of -0.0000083867. a sixth-order aspherical coefficient of 0.0000045956 and an eighth-order aspherical coefficient of -0.000000068107, the radius of curvature of the light beam output surface is 7.313 mm±5%, the lens thickness is 5 mm, nd of the material is 1.4585, and Vd is 67.821; the distance between the second lens 122 and the second lens 122 is D1=1.524 mm; the radius of curvature of the light beam input surface of the second lens 122 is 15.5122 mm±5%, the radius of curvature of the light beam output surface is -12.5634 mm±5%, T2 is 5 mm, nd of the material is 1.4585, and Vd is 67.821; The first distance D1 between the second lens 122 and the third lens 141 is adjustable within a range of 40.4391 mm–2.2578 mm; the curvature radius S5 of the light beam incident surface of the third lens 141 is -42.8953 mm±5%, the curvature radius of the light beam exit surface is -557.4489 mm±5%, the thickness of the lens is 5 mm, nd of the material is 1.4585, and Vd is 67.821;the distance between the third lens 141 and the fourth lens 142 is 1 mm; the radius of curvature of the light beam incident surface of the fourth lens 142 is 9.852 mm±5%, the radius of curvature of the light beam exit surface is 7.9335 mm±5%, the thickness of the lens is 5 mm, nd of the material is 1.4585, and Vd is 67.821; the second distance D2 between the fourth lens 142 and the fifth lens 161 is adjustable in a range of 2.0369 mm–38.8057 mm; the radius of curvature of the light beam incident surface of the fifth lens 161 is 26.1343mm±5%, the radius of curvature of the light beam exit surface is 39.3551mm±5%, the thickness of the lens is 5mm, nd of the material is 1.4585 and Vd is 67.821.;

[0068] The calculations show that the relationship between the first distance (D1) and the second distance (D2) in the zooming process of the optical system and the combined focal length f of the third lens 141 and the fourth lens (the distance between the focal point of the focused light beam and the center of the combination of the third lens 141 and the fourth lens after focusing the light beam) is as follows: D1=-0.2532E 2 -1.3674E+41.719, D2=4.0854E-2.0485, and the focal length after combining the third lens and the fourth lens is as follows: f=0.0579E 2+0.3535E+13.304, where E is the conversion factor, in short, in practical application, when lasers of different parameters are input and the value of the combination of focal length is adjusted, namely, different focal lengths are adjusted, the combination of focal length at this time from a known parameter, and through the above formula, the value of D1 and D2 can be obtained. Fig. Figure 6 shows a schematic diagram of an optional zoom curve in an embodiment of the present invention, as shown in Fig. 6, the value of D1 and D2 changes accordingly with the change of the combined focal length f of the third lens 141 and the fourth lens (the distance between the focal point of the focused light beam and the center of the combination of the third lens 141 and the fourth lens after focusing the light beam).

[0069] In the present embodiment, first, the laser beam output from a fiber laser with an average output power of 2000 W is used as the laser source, and the specific light spot mode is a fundamental output mode, the wavelength is 1080 nm, the light spot size is 5 mm in diameter, the light beam quality is M2 1.4, and the spatial energy distribution of the output beam is the Gaussian distribution; second, the laser beam output from a semiconductor fiber laser with an average output power of 2000 W is used as the laser source, and the light spot mode is a higher-order mode, the wavelength is 915 nm, the light spot size is 8 mm, and the light beam quality is M2 40.5, and they are each used as an application example.

[0070] The above first fiber laser with an average power of 2000W is used as the light source. After the output cap QBH outputs laser light, the interface of the collimating optical system is coupled to the laser output cap. That is, the laser light beam is incident through the incident surface of the first lens 121 of the optical system. The first lens 121 and the second lens 122 form a fixed lens group (the first collimation group) in the optical system. The purpose of this lens is to pre-collimate the dispersed laser light output from the laser. The first lens 121 is a crescent-shaped aspherical surface with a wide field of view and can converge more incident laser light into the optical system to reduce energy loss. The first lens 121 is coated with a high-transmittance film. The focal point of the first lens 121 coincides with the focal point of the second lens 122, so the laser beam is pre-collimated.The third lens 141 and the fourth lens 142 constitute the light beam focusing group to realize the zoom function of the optical system, that is, to realize the change in magnification of the image by the first distance D1 and the second distance D2 without changing the other properties of the image, and the lenses are also aspherical lenses to reduce aberration, and the high-transmittance film is coated on each surface to prevent energy loss, and the combined focal point (the focal point of the focused light beam after focusing the light beam) of the third lens 141 and the fourth lens 142 coincides with the focal point of the fifth lens 161, so that the laser beam output from the output surface of the fifth lens 161 is a collimated parallel light.In summary, after the 1080 nm laser light passes through the collimating optical system, the output spot size is 5 mm, and the spot has a uniform brightness and its size remains unchanged, meaning that parallel light is output. After adjusting the lens group, the spot size of the output laser light changes smoothly within a range of 14 mm to 23 mm, allowing the optical system used at the back end to adapt to the output parallel laser beam without changing the focal length. This is consistent with the design results.

[0071] Fig. 7 shows a schematic diagram of the point spread function at the longest focal length (a) and the shortest focal length (b) of a light beam collimation device in an embodiment of the present invention. Fig. Fig. 8 shows an MTF diagram of the transfer function at the longest focal length (a) and the shortest focal length (b) of a light beam collimator in an embodiment of the present invention, and the shortest focal length and the longest focal length of the light beam collimator are within the diffraction limit, indicating that the performance of the optical system is good, as shown in Fig. 7 and Fig. 8. From the description of the above embodiments, it is clear to those skilled in the art that the method according to the above embodiments can be implemented using software and the required general hardware platform, or, of course, using hardware, but in many cases, the former is the preferred embodiment. Based on this understanding, the essence of the technical solution of the present invention or a contributing part to the prior art can be represented in the form of a software product. The computer software product can be stored in a storage medium (such as ROM / RAM, floppy disk, CD-ROM) and includes a plurality of instructions used to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method in the respective embodiments of the present invention.

[0072] In the present embodiment, a light beam collimation device is further provided, Fig. 9 shows a structural block diagram of a light beam collimation device in an embodiment of the present invention. As in Fig.9, the apparatus comprises: a detection module 92 for detecting a target light beam parameter of an initial light beam A and a target device parameter of a light beam detection device, wherein the light beam detection device is used to detect a light beam output from the light beam collimation device, and wherein the light beam collimation device is used to collimate the initial light beam A, and wherein the light beam collimation device comprises a first collimation lens group 12, a light beam focusing lens group 14, and a second collimation lens group 16, and wherein the light beam focusing lens group 14 is arranged between the first collimation lens group 12 and the second collimation lens group 16, and wherein the optical paths of the first collimation lens group 12, the light beam focusing lens group 14, and the second collimation lens group 16 are coaxial,and wherein a first distance D1 between the first collimating lens group 12 and the light beam focusing lens group 14 and a second distance D2 between the light beam focusing lens group 14 and the second collimating lens group 16 are set to allow adjustment, and wherein the position of the second collimating lens group 16 is fixed; a determination module 94 for determining a first distance value for the first distance D1 and a second distance value for the second distance D2 in accordance with the target light beam parameter and the target device parameter; an adjustment module 96 for adjusting the first collimating lens group 12 and the light beam focusing lens group 14 in accordance with the first distance value and the second distance value,to obtain a collimator for a target light beam; a control module 98 for controlling the initial light beam A to be input to the collimator for a target light beam to obtain a target light beam B output from the collimator for a target light beam having the target light spot size, and wherein the target light beam B is used to be input to the light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size.

[0073] Optionally, the determination module comprises: a first determination unit for determining a focal length value of the focused target light beam corresponding to the target light beam parameter among the light beam parameter and the focal length value of the focused light beam of the light beam focusing lens group 14 having a corresponding relationship, wherein the focal length value of the focused light beam is used to indicate a distance value between the focal point of the light beam focused by the light beam focusing lens group 14 and the center point of the focusing lens group;a second determination unit for determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group 14, the device parameter, and the first distance D1, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group 14, the device parameter, and the second distance D2;

[0074] Optionally, the second determination unit is used for the following purposes: Calculating the first distance value according to a first formula, where the first formula D1=-a1E 2 -a2E+a3, and where D 1is the first distance value, a1, a2 and a3 are coefficients corresponding to the target device parameter, and E is a conversion factor, and wherein the conversion factor is calculated according to a second formula, and wherein the second formula f=b1E 2 +b2E+b3, and where f is the focal length value of the focused target light beam, b1, b2, and b3 are coefficients corresponding to the target device parameter; calculating the second distance value according to a third formula, where the third formula is D2=c1E-c2, and where D2 is the second distance value, and c1 and c2 are coefficients corresponding to the target device parameter.

[0075] It should be noted that each of the above modules may be implemented by software or hardware, and in the latter case, it may be implemented in the following ways, but not limited to the following ways: all of the above modules are located in the same processor; or each of the above modules is located in a different processor in the form of any combination of the above modules.

[0076] An embodiment of the present invention further provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and wherein the computer program is configured to implement the steps in any above embodiment of the method when executed.

[0077] In an exemplary embodiment, the computer-readable storage medium described above may include, but is not limited to, a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a removable hard disk, a magnetic disk, an optical disk, and other media in which the computer program can be stored.

[0078] An embodiment of the present invention further provides an electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, and wherein the processor is configured to execute the computer program to implement the steps in any above embodiment of the method.

[0079] In an exemplary embodiment, the electronic device described above may further comprise a transmission device and an input / output device, wherein the transmission device is connected to the processor described above and the input / output device is connected to the processor described above.

[0080] Specific examples of this embodiment can be referred to the examples described in the above embodiments and exemplary embodiments, and this embodiment will not be repeated here.

[0081] Obviously, those skilled in the art must understand that the above-described modules or steps of the present invention may be implemented in a general computing device, they may be centralized in a single computing device or distributed in a network of multiple computing devices, they may be implemented in program code executable by the computing device, thus they may be stored in a memory device and executed by the computing device, and in some cases they may be implemented in a different way by performing the steps shown or described in a different order than described herein, or they may be implemented as individual integrated circuit modules or as multiple modules or steps thereof as a single integrated circuit module.In this way, the present invention is not limited to a particular combination of hardware and software.

[0082] The above content is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various changes and modifications to the present invention. All changes, equivalent substitutions, and improvements made within the principles of the present invention should be considered to be within the scope of the present invention.

Claims

[1] A light beam collimating device comprising a first collimating lens group, a light beam focusing lens group and a second collimating lens group, wherein the light beam focusing lens group is arranged between the first collimating lens group and the second collimating lens group, and wherein the optical paths of the first collimating lens group, the light beam focusing lens group, and the second collimating lens group are coaxial, and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed; and wherein the first collimating lens group is used to collimate the initial light beam to obtain a collimated light beam; and wherein the light beam focusing lens group is used to focus the collimated light beam to obtain a focused light beam; and wherein the second collimating lens group is used to collimate the focused light beam to obtain a target light beam having a target light spot size, and wherein the target light beam is used to be input to a light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size. [2] The apparatus according to claim 1, wherein the first collimating lens group comprises a first lens and a second lens, wherein a distance between the first lens and the second lens is a fixed value; and wherein the light beam focusing lens group comprises a third lens and a fourth lens, and wherein a distance between the third lens and the fourth lens is a fixed value; and wherein the second collimating lens group comprises a fifth lens, and wherein the focal point of the fifth lens coincides with the focal point of the focused light beam. [3] The apparatus according to claim 2, wherein the refractive indices of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are each a target refractive index falling within a target refractive index interval, the lens satisfying a target dispersion condition for the light beam in the target refractive index interval. [4] The apparatus according to claim 2, wherein the radius of curvature of the light beam input surface of the first lens is positive, and wherein the radius of curvature of the light beam output surface of the first lens is positive; and wherein the radius of curvature of the light beam input surface of the second lens is positive, and wherein the radius of curvature of the light beam output surface of the second lens is negative; and wherein the radius of curvature of the light beam input surface of the third lens is negative, and wherein the radius of curvature of the light beam output surface of the third lens is negative; and wherein the radius of curvature of the light beam input surface of the fourth lens is positive, and wherein the radius of curvature of the light beam output surface of the fourth lens is positive; and wherein the radius of curvature of the light beam input surface of the fifth lens is positive, and wherein the radius of curvature of the light beam output surface of the fifth lens is positive. [5] The apparatus according to claim 2, wherein the light beam input surface of the first lens is aspherical, and wherein the light beam output surface of the third lens is aspherical. [6] The apparatus of claim 1, wherein the target spot size is less than or equal to the target interface size. [7] The apparatus according to claim 2, wherein the distance between the first lens and the second lens is a fixed value set according to the refractive index of the lens, the thickness of the lens, or the focal length of the lens. [8] The apparatus according to claim 2, wherein the distance between the third lens and the fourth lens is a fixed value set according to the refractive index of the lens, the thickness of the lens, or the focal length of the lens. [9] The device of claim 3, wherein the refractive index of the target refractive index interval is greater than or equal to 1.45 and less than or equal to 1.

56. [10] The apparatus of claim 3, wherein the target dispersion condition is used to indicate the quality of the light beam output from the lens. [11] Light beam collimation method, comprising:Detecting a target light beam parameter of an initial light beam and a target device parameter of a light beam detection device, wherein the light beam detection device is used to detect a light beam output from the light beam collimation device, and wherein the light beam collimation device is used to collimate the initial light beam, and wherein the light beam collimation device comprises a first collimation lens group, a light beam focusing lens group, and a second collimation lens group, and wherein the light beam focusing lens group is arranged between the first collimation lens group and the second collimation lens group, and wherein the optical paths of the first collimation lens group, the light beam focusing lens group, and the second collimation lens group are coaxial,and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed;, Determining a first distance value for the first distance and a second distance value for the second distance in accordance with the target light beam parameter and the target device parameter; Adjusting the first collimating lens group and the light beam focusing lens group in accordance with the first distance value and the second distance value to obtain a collimating device for a target light beam; Driving the initial light beam to input the target light beam collimator to obtain a target light beam output from the target light beam collimator having the target light spot size, and wherein the target light beam is used to be input to the light beam detecting device, and wherein the target interface size of the light beam detecting device matches the target light spot size. [12] The method of claim 11, wherein determining a first distance value for the first distance and a second distance value for the second distance in accordance with the target light beam parameter and the target device parameter comprises: Determining a focal length value of the focused target light beam corresponding to the target light beam parameter from among the light beam parameter and the focal length value of the focused light beam of the light beam focusing lens group having a corresponding relationship, wherein the focal length value of the focused light beam is used to indicate a distance value between the focal point of the light beam focused by the light beam focusing lens group and the center point of the focusing lens group; Determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance in a correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the second distance. [13] The method according to claim 12, wherein determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group, the device parameter and the first distance, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter and the second distance, comprises: Calculating the first distance value according to a first formula, wherein the first formula D1=-a1E 2-a2E+a3, and where D1 is the first distance value, a1, a2 and a3 are coefficients corresponding to the target device parameter, and E is a conversion factor, and where the conversion factor is calculated according to a second formula, and where the second formula f=b1E 2 +b2E+b3, and where f is the focal length value of the focused target light beam, b1, b2 and b3 are coefficients corresponding to the target device parameter; Calculating the second distance value according to a third formula, wherein the third formula is D2=c1E-c2, and wherein D2 is the second distance value and c1 and c2 are coefficients corresponding to the target device parameter. [14] The method of claim 11, wherein the target light beam parameter comprises a time domain characteristic parameter, a spatial domain characteristic parameter, and a frequency domain characteristic parameter. [15] The method according to claim 11, wherein the second distance value is a distance value between the light beam focusing lens group and the second collimating lens group when the focal point of the focused target light beam with the target light beam parameter coincides with the focal point of the second collimating lens group. [16] A light beam collimation device, comprising: a detection module for detecting a target light beam parameter of an initial light beam and a target device parameter of a light beam detection device, wherein the light beam detection device is used to detect a light beam output from the light beam collimation device, and wherein the light beam collimation device is used to collimate the initial light beam, and wherein the light beam collimation device comprises a first collimation lens group, a light beam focusing lens group, and a second collimation lens group, and wherein the light beam focusing lens group is arranged between the first collimation lens group and the second collimation lens group, and wherein the optical paths of the first collimation lens group, the light beam focusing lens group, and the second collimation lens group are coaxial,and wherein a first distance between the first collimating lens group and the light beam focusing lens group and a second distance between the light beam focusing lens group and the second collimating lens group are set to allow adjustment, and wherein the position of the second collimating lens group is fixed;, a determination module for determining a first distance value for the first distance and a second distance value for the second distance in accordance with the target light beam parameter and the target device parameter; an adjustment module for adjusting the first collimating lens group and the light beam focusing lens group in accordance with the first distance value and the second distance value to obtain a collimating device for a target light beam; a control module for controlling the initial light beam to be input to the target light beam collimator to obtain a target light beam output from the target light beam collimator having the target light spot size, and wherein the target light beam is used to be input to the light beam detection device, and wherein the target interface size of the light beam detection device matches the target light spot size. [17] A light beam collimation device according to claim 16, wherein the determination module comprises: a first determination unit for determining a focal length value of the focused target light beam corresponding to the target light beam parameter from among the light beam parameter and the focal length value of the focused light beam of the light beam focusing lens group having a corresponding relationship, wherein the focal length value of the focused light beam is used to indicate a distance value between the focal point of the light beam focused by the light beam focusing lens group and the center point of the focusing lens group; a second determination unit for determining a first distance value corresponding to the focal length value of the focused target light beam and the target device parameter among the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance in a correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the first distance, and determining a second distance value corresponding to the focal length value of the focused target light beam and the target device parameter in the correspondence relationship between the focal length value of the focused light beam of the light beam focusing lens group, the device parameter, and the second distance. [18] The light beam collimation device according to claim 17, wherein the second determination unit is used for the following purposes: calculating the first distance value according to a first formula, wherein the first formula D1=-a1E 2-a2E+a3, and where D1 is the first distance value, a1, a2 and a3 are coefficients corresponding to the target device parameter, and E is a conversion factor, and where the conversion factor is calculated according to a second formula, and where the second formula f=b1E 2 +b2E+b3, and where f is the focal length value of the focused target light beam, b1, b2, and b3 are coefficients corresponding to the target device parameter; calculating the second distance value according to a third formula, where the third formula is D2=c1E-c2, and where D2 is the second distance value, and c1 and c2 are coefficients corresponding to the target device parameter. [19] A computer-readable storage medium in which a computer program is stored, wherein the steps of the method according to claim 6 are realized when the computer program is executed by a processor. [20] An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the steps of the method according to claim 6 are realized when the processor executes the computer program.

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