WO2018058741A1

WO2018058741A1 - Multipath light beam processing optical system and processing method therefor, and multipath laser detector

Info

Publication number: WO2018058741A1
Application number: PCT/CN2016/104516
Authority: WO
Inventors: 佟建; 屈志巍; 张正正; 李娟娟
Original assignee: 北京万集科技股份有限公司
Priority date: 2016-09-28
Filing date: 2016-11-04
Publication date: 2018-04-05
Also published as: CN106249422A

Abstract

A multipath light beam processing optical system, comprising multiple optical subsystems (1, 2, …, n) having a one-to-one correspondence to multiple light beams. Each optical subsystem comprises collimating and shaping units (330, 340) and a first cylindrical lens group (350). The collimating and shaping unit is located between a light source (320) and the first cylindrical lens group. The collimating and shaping unit is used for collimating and shaping light emitted along a first axial direction of the light source. The first cylindrical lens group is used for collimating and shaping light emitted by the collimating and shaping unit along a second axial direction of the light source. At least two optical subsystems share one first cylindrical lens group. By configuring at least two of multiple optical subsystems to share one first cylindrical lens group, the system can achieve the miniaturization of an optical system while guaranteeing a light spot effect.

Description

Multi-channel beam processing optical system and processing method thereof, multi-channel laser detector

cross reference

The present application is hereby incorporated by reference in its entirety in its entirety in its entirety in its entirety in the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire This application.

Technical field

Embodiments of the present invention relate to the field of optical related technologies, and in particular, to a multi-path beam processing optical system, a processing method thereof, and a multi-channel laser detector.

Background technique

At present, intelligent laser detection systems based on point cloud technology play an increasingly important role in industrial automation, streetscape mapping, and unmanned driving. Compared with microwave radar, the resolution of laser detection system is higher; compared with video detection system, laser detection system has faster response speed and can penetrate fine particles such as fog and dust to avoid the adverse effects of extreme weather. Therefore, laser detection systems are increasingly used in various fields of production and life. The general principle is that the laser continuously emits laser light to the target, and the light reflected by the diffuse enters the receiving system and generates a signal. The multi-beam laser is continuously incident on different positions of the target and reflected back, and generates parameter information such as the distance, size, reflectivity, and moving speed of the target, thereby detecting the entire target. Its role is equivalent to the eyes of automated equipment, used to sense external information, to play the role of collecting information.

Since the beam of light directly emitted by the laser is of poor quality and the energy is not concentrated, the collimating shaping optical system is required to collimate the light emitted by the laser. In addition, since such intelligent laser detection systems generally need to be integrated in other devices, miniaturization is also a necessary condition, and thus the lasers selected for such systems are mostly semiconductor lasers or semiconductor laser diodes. Semiconductor lasers have become the first choice for small laser detection equipment due to their small size, light weight, high photoelectric conversion efficiency, long life, high reliability, easy integration and good heat dissipation.

For long-distance small-angle multi-point laser detection systems, it is necessary to transmit multiple channels in a small angle range. Lasers, so multiple laser alignment systems are required in such equipment. The more the number of laser channels, the larger the size of the device, so there is a problem of how to arrange and save space for multiple laser emitting systems.

In the process of implementing the embodiments of the present invention, the inventors have found that the size of semiconductor packages that can be mass-produced on the market is large, which also restricts the miniaturization of devices of this kind. The existing common arrangement methods for multiple lasers include: 1. Multiple lasers share a group of optical systems at the same time; 2. Multiple lasers are equally divided into several groups, each group sharing one optical system.

However, for the above two methods, since the package size of the semiconductor laser is large, and the required detection angle is small, that is, the angle between the laser emission systems of each laser is small, so in order to ensure that the emission centers of the lasers pass. At the center of the optical system, the focal length of the optical system becomes larger, with the result that the axial size of the system is large, resulting in the miniaturization of the detection system.

Summary of the invention

An object of the embodiments of the present invention is to solve the problem that the detection system cannot be miniaturized due to the large package size of the semiconductor laser in the prior art.

In a first aspect, an embodiment of the present invention provides a multi-channel beam processing optical system, including: a plurality of sub-optical systems corresponding to the multiple beams in one-to-one;

Each sub-optical system includes: a collimating shaping unit and a first cylindrical lens group, the collimating shaping unit being located between the light source and the first cylindrical lens group;

The collimating shaping unit is configured to perform collimation and shaping processing on the light emitted from the first axis direction of the light source;

The first column lens group is configured to perform alignment and shaping processing on the light in the second axis direction of the light source emitted by the straight shaping unit;

Wherein at least two sub-optical systems share a first cylindrical lens group.

Optionally, the collimating shaping unit comprises: a second cylindrical lens group/a toric mirror;

The second cylindrical lens group / the toric mirror is located between the light source and the first cylindrical lens group;

The second column lens group/the toric mirror is used for collimating and shaping the light emitted from the first axis direction of the light source. Optionally, the collimating shaping unit comprises: an aspherical mirror group and a second cylindrical lens group;

The aspherical lens group is located between the light source and the first cylindrical lens group, and the second cylindrical lens group is located between the aspherical lens group and the first cylindrical lens group;

The aspherical mirror group is configured to collimate and shape the light emitted from the first axis direction of the light source;

The second column lens group is configured to perform beam expansion and divergence processing on the light emitted by the aspherical lens group.

Optionally, the first cylindrical lens group and the second cylindrical lens group are a spherical cylindrical lens group or an aspheric cylindrical lens group.

Optionally, the first axis and the second axis are a slow axis or a fast axis, and the first axis and the second axis are not a slow axis or a fast axis.

Optionally, in the same sub-optical system, the centers of the aspherical mirror group, the first cylindrical lens group, and the second cylindrical lens group are located on the same straight line.

Optionally, the optical axes of the collimating shaping units are spaced apart from each other by a predetermined angle.

Optionally, two collimating shaping units sharing the same first cylindrical lens group are symmetric along the optical axis of the first cylindrical lens group, and an angle range between the optical axis of the first cylindrical lens group and the optical axis of the first cylindrical lens group is It is 0°-10°.

In a second aspect, an embodiment of the present invention further provides a multi-beam processing method for the multi-beam processing optical system, including:

a plurality of sub-optical systems respectively perform collimation and shaping processing on the received multiple beams;

In the same sub-optical system, the collimating shaping unit performs collimation and shaping processing on the light emitted from the first axis direction of the light source;

The first column lens group is aligned with the light in the second axis direction of the light source emitted by the straight shaping unit to perform collimation and shaping processing;

Wherein at least two sub-optical systems share a first cylindrical lens group.

In a third aspect, an embodiment of the present invention further provides a multi-channel laser detector, including: a multi-channel light source, a receiving device, and a multi-channel beam processing optical system as described above;

The multiple beam processing optical system has a one-to-one correspondence with the multiple light sources;

The light source for emitting a laser beam;

The multi-beam processing optical system is configured to perform collimation and shaping processing on the laser beam;

The receiving device is configured to receive the light returned by the diffuse reflection and generate a signal according to the received light.

According to the above technical solution, a multi-channel beam processing optical system and a processing method thereof, and a multi-channel laser detector according to embodiments of the present invention provide a plurality of sub-optical systems corresponding to the light source one by one, and set at least one of them The two sub-optical systems share a first cylindrical lens group, and the optical system can be miniaturized while ensuring the spot effect as compared with the prior art.

DRAWINGS

The features and advantages of the present invention are more clearly understood from the following description of the drawings.

1 is a schematic structural view of a multi-channel beam processing optical system according to an embodiment of the present invention;

2 is a schematic flow chart of a multi-beam processing method according to an embodiment of the present invention;

3 is a schematic structural view of a four-way beam processing apparatus according to an embodiment of the present invention;

4 is a schematic structural view showing a four-way beam processing optical system according to an embodiment of the present invention;

FIG. 5 is a schematic structural view showing a multi-beam semiconductor laser optical system according to an embodiment of the present invention; FIG.

6a and 6b are schematic diagrams showing the structure of a beam processing sub-optical system in the multiplexed beam semiconductor laser optical system shown in FIG. 5;

7 is a flow chart showing the operation of the semiconductor laser optical system of the multiple beam shown in FIG. 5;

FIG. 8 is a block diagram showing the structure of a multi-channel laser detector according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a part of the embodiment of the invention, not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a block diagram showing the structure of a multi-channel beam processing optical system according to an embodiment of the present invention. 1 , comprising: a plurality of light sources and a multi-beam processing optical system, wherein the light source may be a laser; the multi-beam processing optical system comprises: a plurality of sub-optics corresponding to the multiple beams emitted by the multiple light sources a system comprising: a first sub-optical system 1, a second sub-optical system 2, an n-1th optical system, and an nth sub-optical system;

Wherein the first axis and the second axis are a slow axis or a fast axis, and the first axis and the second axis are not a slow axis or a fast axis.

It should be noted that, due to the action of the pick, the light beam emitted by the light source is divided into light in the slow axis direction and light in the fast axis direction. Since the astigmatic astigmatism is a unique parameter of the semiconductor laser, that is, the fast axis illuminating surface and the slow axis illuminating surface are not on the same plane, the commonly used collimating shaping system cannot obtain good both in the fast axis direction and the slow axis direction at the same time. Shaping effect. In this embodiment, by arranging the collimating shaping unit and the first cylindrical lens group, respectively shaping the light in the slow axis direction and the fast axis direction, the shaping effect can be effectively improved.

In addition, in this embodiment, at least two sub-optical systems share one first cylindrical lens group.

Therefore, in this embodiment, by providing a plurality of sub-optical systems corresponding to the light source one by one, and providing at least two sub-optical systems therein to share a first cylindrical lens group, compared with the prior art, the spot effect can be ensured. At the same time, the miniaturization of the optical system is achieved.

The following is a detailed description of the structural design of the straight shaping unit and the first cylindrical lens group:

In the embodiment shown in Figure 1:

The collimating shaping unit includes: a second column lens group; the second column lens group is located between the light source and the first column lens group;

The second column lens group is configured to perform collimation and shaping processing on the light emitted from the first axis direction of the light source;

It should be noted that, if the first axis is a slow axis, the second cylindrical lens group performs collimation and shaping processing on the light in the slow axis direction based on the preset first focal length, and accordingly, the first cylindrical lens group is based on the preset The two focal lengths are aligned with the light emitted from the fast axis of the straight shaping unit for collimation and shaping;

If the first axis is a fast axis, the second column lens group collimates and shapes the light in the fast axis direction based on the preset first focal length, and accordingly, the first column lens group is aligned based on the preset second focal length The light emitted from the slow axis in the shaping unit is collimated and shaped;

In addition, the second cylindrical lens group in this embodiment may be replaced by a toric mirror.

In a possible embodiment, the collimating shaping unit comprises: an aspherical mirror group and a second cylindrical lens group;

It should be noted that the divergence of light spots at a long distance will be seriously enlarged. Therefore, the negative cylindrical lens added behind the aspherical mirror in the slow axis direction can function as a corrected diffusion of the concentrated light.

It is not difficult to understand that the relationship between the first axis and the second axis and the fast axis and the slow axis can be referred to the description of the previous embodiment.

It should be noted that, in the first embodiment, the first cylindrical lens group and the second cylindrical lens group each include at least one cylindrical lens, and the aspherical lens group includes at least one aspherical mirror. The specific quantity may be determined as needed, and is not limited here;

In addition, the first cylindrical lens group and the second cylindrical lens group are spherical cylindrical lenses or aspherical cylindrical lenses.

FIG. 2 is a schematic flow chart of a multi-beam processing method according to an embodiment of the present invention. Referring to FIG. 2, the method includes:

210. The plurality of sub-optical systems respectively perform collimation and shaping processing on the received multiple beams;

220. In the same sub-optical system, the collimating shaping unit performs collimation and shaping processing on the light emitted from the first axis direction of the light source;

230. The first cylindrical lens group is aligned with the light in the second axis direction of the light source emitted by the straight shaping unit to perform collimation and shaping processing;

Wherein at least two sub-optical systems share a first cylindrical lens group.

In this embodiment, by providing a plurality of sub-optical systems corresponding to the light source one by one, and setting at least two sub-optical systems thereof to share a first cylindrical lens group, compared with the prior art, the effect of ensuring the spot effect can be realized. The miniaturization of the optical system.

For the method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the embodiments of the present invention are not limited by the described action sequence, because the embodiments according to the present invention are Some steps can be performed in other orders or at the same time. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required in the embodiments of the present invention.

3 is a schematic structural view of a four-way beam processing apparatus according to an embodiment of the present invention. Referring to FIG. 3, the apparatus is used for mounting the beam processing optical system, including: a housing 310, and a sliding on the housing. a groove 360, a four-way optical system is installed in the chute 360, and the four-way sub-optical system comprises: a first path optical system, a second path optical system, a third path optical system, and a fourth path optical system;

Each of the path optical systems includes a semiconductor laser 320, an aspherical mirror 330, a negative cylindrical lens 340, and a positive cylindrical lens 350.

The semiconductor laser 320, the aspherical mirror 330, the negative cylindrical lens 340, and the positive cylindrical lens 350 are sequentially disposed in the chute 360 and are slidable in the direction of the chute 360.

4 is a schematic diagram showing the structure division of a four-way beam processing optical system according to an embodiment of the present invention. Referring to FIG. 4, the four-way sub-optical system is equally divided into two groups, including: a first group of sub-optical systems 410 and a second The set of sub-optical systems 420, each group sharing a last set of lenses.

In addition, it is not difficult to understand that the division here is an example, not a limitation; other division methods, for example, a four-way sub-optical system can be divided into three groups, and the remaining one is a separate group; nine paths The optical system can be divided into three groups on average, or divided into four groups by two or two, and the remaining one is a separate group, which is feasible.

Light is emitted from the semiconductor laser, sequentially enters the aspherical, negative cylindrical lens along the respective optical axes, and reaches the positive cylindrical lens. Since the lateral dimension of the third set of positive cylindrical lenses is the size of the positive cylindrical lens required for the single-path shaping system Therefore, the light of each optical system is emitted from the corresponding cylindrical lens area of the corresponding portion, and does not affect each other. These two optical systems form a new sub-optical system and vary in two The small angular direction emits two beams. This new sub-optical system is again separated from the other sub-optical system by a certain angle and arranged up and down, thus realizing multiple lasers to emit light at different angles.

Based on the same invention, an embodiment of the present invention also provides a multiplexed beam semiconductor laser optical system. Referring to FIG. 5, the multiplexed beam semiconductor laser optical system 510 includes: a plurality of beam processing sub-optical systems 520 and more Road beam detecting unit 530;

The beam processing sub-optical system 520 is configured to collimate and shape the light emitted by the semiconductor laser; the multi-beam detecting unit 530 is configured to install the beam processing optical system 520, and realize the different directions of the long-distance, multi-beam Target calibration and detection.

Each of the beam processing sub-optical systems 520 includes a semiconductor laser 521, an aspherical mirror 522, a negative cylindrical lens 523, and a positive cylindrical lens 524. The connection relationship of the above components is such that the semiconductor laser 521, the aspherical mirror 522, the negative cylindrical lens 523, and the positive cylindrical lens 524 are sequentially arranged in the direction in which the light emitted from the semiconductor laser 521 is emitted, and the centers are located on the same straight line.

The multiplex beam detecting unit 530 includes: a multiplex beam mechanical structure 531 and an outer frame 532 defining a position of the even array beam processing optical system 520. The multiplex beam mechanical structure 531 includes a chute having a center line along different angular directions, and the beam The processing optical system 520 is placed in the chute.

The position of the plurality of beam processing sub-optical systems 520 in the multiple beam detecting unit 530 is: viewed in the direction of light propagation, each of the two beam processing sub-optical systems 520 is distributed on the left and right sides, and each beam processing sub-optical system The optical axes of 520 are angularly spaced from each other to emit laser light in different directions, wherein the last set of positive cylindrical lenses 524 of beam processing sub-optical system 520 is shared by each two sets of beam processing sub-optical systems 520.

The outer frame 532 includes: a semiconductor laser outer frame and a lens outer frame, a semiconductor laser outer frame and a fixed semiconductor laser 521, the lens outer frame is used for fixing the aspherical mirror 522, the negative cylindrical lens 523 and the positive cylindrical lens 524, and the The chute structure achieves a tight fit for easy installation and commissioning.

6a and 6b are schematic diagrams showing the structure of a beam processing sub-optical system in the multiplexed beam semiconductor laser optical system shown in Fig. 5. The working principle of the beam processing sub-optical system will be described in detail below with reference to Figs. 6a and 6b. :

For the light in the fast axis direction, the processing of the beam processing sub-optical system, as shown in FIG. 6a, when the fast axis light emitting surface 612 of the semiconductor laser emits laser light, the light first enters the aspherical mirror 613, the fast axis The directional light is collimated by the aspherical mirror 613 and enters the negative cylindrical lens 614 and the positive cylindrical lens 615, while the negative cylindrical lens 614 and the positive cylindrical lens 615 do not act on the light in the fast axis direction.

At the same time, as shown in FIG. 6b, the light in the slow axis direction emitted by the slow axis light emitting surface 611 is also incident on the aspherical mirror 613, but the slow axis light emitting surface 611 and the fast axis light are emitted due to the influence of the inherent astigmatism of the semiconductor laser. The surface 612 is not on the same plane, and the slow axis direction light emitting surface 611 is away from the subsequent optical system by a certain distance from the fast axis direction light emitting surface 612, and the light emitted by the fast axis light emitting surface 612 (as shown in FIG. 6a) is collimated. When the parallel light is emitted, the light emitted by the slow axis light emitting surface 611 (as shown in FIG. 6b) will have an overcorrection effect after entering the aspherical mirror 613, that is, the light will slightly converge rather than parallel light. Although this degree of convergence is relatively small, the divergence of the spot at a long distance will be severely enlarged.

Therefore, the negative cylindrical lens 614 that needs to be added behind the slow axis direction aspherical mirror 613 can function to correct the diffusion of the concentrated light. The slow axis direction light exits the negative cylindrical lens 614 and is incident on the last positive lens 615. The positive lens 615 collimates the light diffused by the negative cylindrical lens 614 into parallel light and is incident on a distant target.

FIG. 7 is a schematic flow chart showing the operation principle of the multiplexed light beam semiconductor laser optical system shown in FIG. 5. Referring to FIG. 7, the working principle of the system is as described in the following multi-path laser shaping method, and the method includes:

710, a collimating shaping method of a single semiconductor laser;

720: collimating and shaping the light emitted from the fast axis direction and the slow axis direction of the semiconductor laser respectively; and miniaturizing the system by sharing the last cylindrical lens and staggering symmetrically arranging the single collimating shaping unit.

730, miniaturization scheme for long-distance multi-channel laser

The above step 620 includes the following three schemes:

In the first embodiment, a cylindrical lens optical system that collimates and shapes only the light in the respective directions is used in the fast axis direction and the slow axis direction, respectively;

In the second scheme, a spherical mirror optical system that collimates the light in the fast axis direction but also affects the light in the slow axis direction, and uses a column that collimates and shapes only the light in the slow axis direction after the spherical mirror optical system. Lens optical system

Scheme 3: a spherical mirror optical system that collimates and shapes the light in the slow axis direction but also has a convergence effect on the light in the fast axis direction, and uses the light in the fast axis direction only after the spherical mirror optical system a cylindrical lens optical system for collimating and shaping the line;

The above-mentioned step 730 miniaturization scheme of the long-distance multiplexed laser includes:

Each of the two collimating shaping units shares the last set of cylindrical lenses. Each of the two collimating shaping units is observed in a horizontal direction on two mutually parallel planes, and each of the two collimating shaping units is symmetrically distributed up and down along the optical axis of the last set of cylindrical lenses, and the last set of cylindrical lenses The optical axis has an angle of 0°-10°. When viewed along the direction of light propagation, each of the two sets of collimating shaping units is distributed in parallel left and right;

Each of the two collimating shaping units is arranged in the same plane from the top to the bottom of each of the two sets of collimating shaping units, and there is an angle of 0-90° between each other.

The common last set of cylindrical lenses has a size twice in the direction of the bus bar as in the single collimating shaping unit, and the light of each collimating shaping unit is respectively incident on the cylindrical lens of the respective channel, and the light is mutually Do not interfere.

8 is a schematic structural view of a multi-channel laser detector according to an embodiment of the present invention. Referring to FIG. 8, the detector includes: a multi-channel light source, a receiving device, and a multi-channel beam processing optical system;

The light source for emitting a laser beam;

The multi-beam processing optical system is configured to perform collimation and shaping processing on the laser beam, and emit the collimated and shaped beam to the object to be tested;

The receiving device is configured to receive the light returned by the diffuse reflection of the object to be tested, and generate a signal according to the received light.

It should be noted that the multi-beam processing optical system here is the same as the multi-beam processing optical system in the embodiment corresponding to FIG. 1. For the working principle, please refer to the corresponding embodiment of FIG. Repeat them.

It will be understood by those skilled in the art that although some embodiments described herein include certain features included in other embodiments and not other features, combinations of features of different embodiments are intended to be within the scope of the present invention. And different embodiments are formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be practiced without departing from the scope of the appended claims. In the claims, any reference symbol between parentheses should not be constructed as a right The limit of seeking. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently substituted; and the modifications or substitutions do not deviate from the scope of the corresponding technical solutions. .

Claims

A multi-channel beam processing optical system, comprising: a plurality of sub-optical systems corresponding to the multiple beams in one-to-one;

Each sub-optical system includes: a collimating shaping unit and a first cylindrical lens group, the collimating shaping unit being located between the light source and the first cylindrical lens group;

The collimating shaping unit is configured to perform collimation and shaping processing on the light emitted from the first axis direction of the light source;

The first column lens group is configured to perform alignment and shaping processing on the light in the second axis direction of the light source emitted by the straight shaping unit;

Wherein at least two sub-optical systems share a first cylindrical lens group.
The system according to claim 1, wherein the collimating shaping unit comprises: a second cylindrical lens group / a toric mirror;

The second cylindrical lens group / the toric mirror is located between the light source and the first cylindrical lens group;

The second column lens group/the toric mirror is used for collimating and shaping the light emitted from the first axis direction of the light source.
The system according to claim 1, wherein the collimating shaping unit comprises: an aspherical mirror group and a second cylindrical lens group;

The aspherical lens group is located between the light source and the first cylindrical lens group, and the second cylindrical lens group is located between the aspherical lens group and the first cylindrical lens group;

The aspherical mirror group is configured to collimate and shape the light emitted from the first axis direction of the light source;

The second column lens group is configured to perform beam expansion and divergence processing on the light emitted by the aspherical lens group.
The system according to claim 2 or 3, wherein the first cylindrical lens group and the second cylindrical lens group are a spherical cylindrical lens group or an aspheric cylindrical lens group.
The system according to any one of claims 1 to 3, wherein the first axis and the second axis are slow axes or fast axes, and the first axis and the second axis are different It is a slow axis or a fast axis.
The system according to claim 3, wherein in the same sub-optical system, the centers of the aspherical lens group, the first cylindrical lens group, and the second cylindrical lens group are located on the same straight line.
The system of claim 1 wherein the optical axes of the respective collimating shaping units are Preset the angle between each other.
The system according to claim 1, wherein two collimating shaping units sharing the same first cylindrical lens group are symmetrical along an optical axis of said first cylindrical lens group, and are associated with said first cylindrical lens group The angle between the optical axes ranges from 0° to 10°.
A multiplexed beam processing method for a multiplexed beam processing optical system according to any one of claims 1-8, characterized in that it comprises:

a plurality of sub-optical systems respectively perform collimation and shaping processing on the received multiple beams;

In the same sub-optical system, the collimating shaping unit performs collimation and shaping processing on the light emitted from the first axis direction of the light source;

The first column lens group is aligned with the light in the second axis direction of the light source emitted by the straight shaping unit to perform collimation and shaping processing;

Wherein at least two sub-optical systems share a first cylindrical lens group.
A multi-channel laser detector, comprising: a multi-channel light source, a receiving device, and the multi-beam beam processing optical system according to any one of claims 1-8;

The multiple beam processing optical system has a one-to-one correspondence with the multiple light sources;

The light source for emitting a laser beam;

The multi-beam processing optical system is configured to perform collimation and shaping processing on the laser beam;

The receiving device is configured to receive the light returned by the diffuse reflection and generate a signal according to the received light.