CN216900911U - Laser receiving and transmitting different-side device, laser receiving and transmitting module and laser radar - Google Patents
Laser receiving and transmitting different-side device, laser receiving and transmitting module and laser radar Download PDFInfo
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- CN216900911U CN216900911U CN202122960704.1U CN202122960704U CN216900911U CN 216900911 U CN216900911 U CN 216900911U CN 202122960704 U CN202122960704 U CN 202122960704U CN 216900911 U CN216900911 U CN 216900911U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The utility model relates to the technical field of laser ranging, in particular to a laser transmitting and receiving opposite-side device which comprises a circuit board, a laser, a collimating lens, a receiving lens, a detector and a plane reflector, wherein the laser is fixed on the upper surface of the circuit board, the laser axis of the laser is vertical to the circuit board, the collimating lens is fixed above the laser, the center of the collimating lens is coaxial with the laser axis of the laser, the receiving lens is obliquely arranged on the upper surface of the circuit board at intervals, the inclined surface of the receiving lens faces the collimating lens, the detector is fixed on the lower surface of the circuit board close to the receiving lens, the plane reflector is arranged below the detector at intervals, one end of the plane reflector extends to the lower part of the receiving lens, the laser is fixed on the upper surface of one end of the circuit board in a patch manner, the detector is fixed on the lower surface of the other end of the circuit board in a patch manner, the collimating lens is installed on the circuit board through the first support, and the plane of the collimating lens is parallel to the circuit board at an interval.
Description
Technical Field
The utility model relates to the technical field of laser ranging, in particular to a laser receiving and transmitting opposite-side device, a laser receiving and transmitting module and a laser radar.
Background
The laser radar is a radar device which takes laser as a signal carrier to detect the relevant characteristic quantity of a target, the laser radar emits laser when working, the laser forms an echo after being reflected by the target, and after receiving the echo signal, the signal is processed to a certain extent so as to obtain a detection signal, and the target to be detected is detected, tracked and identified. The laser radar apparatus is composed of three main parts, namely a transmitting device, a receiving device and an information processing device.
At present, triangle laser radar generally uses fixed module to fix emitter and receiving arrangement, fix laser instrument and collimating lens in the copper pipe respectively, constitute emitter, receiving arrangement is constituteed to receiving lens and detector, the detector is integrated on the circuit board, and perpendicular with the receiving lens optical axis, the circuit board is fixed on fixed module, in emitter, laser instrument and collimating lens dress are in same lens cone, during the assembly, need adjust laser instrument position structure and collimating lens position structure simultaneously, the uncertainty has been increased and the dress accent degree of difficulty, in addition need use the special fixed module of design to fix the camera lens. In a receiving device, in normal work, when different distances are tested, due to different object distances, theoretically, imaging positions are different, a detector is integrated on a circuit board and is perpendicular to an optical axis of a receiving lens, when different distances are detected, defocusing degrees are different, aberration sizes are different, the size of a scattered spot is greatly different, and the detection effect and precision are seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a laser light transmitting and receiving device, which effectively solves the deficiencies of the prior art.
In order to achieve the purpose, the technical scheme applied by the utility model is as follows:
the utility model provides a different side device of laser receiving and dispatching, which comprises a circuit board, the laser instrument, collimating lens, receiving lens, detector and plane reflector, the upper surface at the circuit board is fixed to the laser instrument, and the laser optical axis perpendicular to circuit board of laser instrument, collimating lens is fixed in the top of laser instrument, and collimating lens's center sets up with the laser optical axis is coaxial, receiving lens interval collimating lens slope is installed at the upper surface of circuit board, and receiving lens's inclined plane orientation collimating lens, the detector is fixed at the lower surface of the circuit board that is close to receiving lens, the below at the detector is installed to the plane reflector interval, and the one end of plane reflector extends to receiving lens's below.
In one possible embodiment, the laser is fixed on the upper surface of one end of the circuit board in a patch mode, and the detector is fixed on the lower surface of the other end of the circuit board in a patch mode.
In one possible embodiment, the collimating lens is mounted on the circuit board by a first bracket, and the plane of the collimating lens is spaced parallel to the circuit board.
In one possible embodiment, the receiving lens is mounted on the circuit board through the second bracket, and the plane of the receiving lens forms an included angle with the circuit board.
In one possible embodiment, the plane mirror is spaced parallel to the circuit board.
In a possible embodiment, the laser optical axis, the main plane of the receiving lens and the extension line of the detector intersect at a point.
In one possible embodiment, the first support is adjustable.
In one possible embodiment, the second bracket is adjustable.
A laser transceiver module comprises the laser transceiver device.
A laser radar comprises the laser transceiving module.
The utility model has the beneficial effects that:
1) the utility model changes the prior triangular laser radar that a fixed module is needed to fix the transmitting device and the receiving device, the laser and the detector are directly integrated on the circuit board, the collimating lens of the transmitting device and the receiving lens of the receiving device are respectively fixed by adjustable supports, the collimating lens is coaxial with the laser, only the support needs to be debugged during debugging, thereby reducing the debugging and assembling difficulty and saving the working hours and the material cost;
2) for receiving lenses with different focal lengths, the deflection angle of the receiving lens and a circuit board is calculated through the distances among the focal length of the receiving lens, the optical axis of a laser and the center of a collimating lens, so that the extension lines of the optical axis of the laser, the main plane of the receiving lens and a detector are intersected at one point;
3) through placing the plane mirror, when changing light path propagation direction, still can not bring the aberration, shorten the structural length of receiving lens and detector simultaneously, be favorable to whole laser radar transmission and receive the littleer of heterotypic optical device doing, the detector is integrated on the circuit board, and be fixed in on the same circuit board with the laser instrument, its position keeps relatively fixed, can not appear because certain device is not hard up, lead to whole light path to have big change, so that the condition that influences the precision or can't work appears.
Drawings
Fig. 1 is an overall structural view of the present invention.
1. A circuit board; 2. a laser; 21. a laser optical axis; 3. a first bracket; 4. a collimating lens; 5. a receiving lens; 6. a second bracket; 7. a detector; 8. a plane mirror.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
As shown in fig. 1, the laser transceiver device according to the present invention includes a circuit board 1 (e.g. a PCB), a laser 2, a collimating lens 4, a receiving lens 5, a detector 7, and a plane mirror 8, wherein the laser 2 is fixed on an upper surface of the circuit board 1, a laser axis 21 of the laser 2 is perpendicular to the circuit board 1, the collimating lens 4 is fixed above the laser 2, a center of the collimating lens 4 is coaxially disposed with the laser axis 21 of the laser 2, the receiving lens 5 is obliquely installed on the upper surface of the circuit board 1 with the collimating lens 4 therebetween, an inclined surface of the receiving lens 5 faces the collimating lens 4, the detector 7 is fixed on a lower surface of the circuit board 1 close to the receiving lens 5, the plane mirror 8 is installed below the detector 7 with the plane mirror 8 extending from one end thereof to a lower side of the receiving lens 5, the laser 2 is fixed on an upper surface of one end of the circuit board 1 in a form of a patch, the detector 7 is fixed on the lower surface of the other end of the circuit board 1 in a patch mode, the collimating lens 4 is installed on the circuit board 1 through the first support 3, the plane of the collimating lens 4 is spaced from the circuit board 1 in parallel, the receiving lens 5 is installed on the circuit board 1 through the second support 6, an included angle is formed between the plane of the receiving lens 5 and the circuit board 1, and the plane reflector 8 is spaced from the circuit board 1 in parallel. The above constitutes the basic structure of the present invention.
The laser device is arranged in such a structure, the emitting device is composed of a laser device 2, a collimating lens 4 and a first support 3, the laser device 2 is integrated on a circuit board 1 in an integrated mode such as a patch and the like, the laser device is perpendicular to the circuit board 1 to emit laser, a laser optical axis 21 is guaranteed to be perpendicular to the circuit board, the collimating lens 4 is placed perpendicular to the laser optical axis 21 of the laser device 2 through the first support 3, the center of the collimating lens 4 is completely overlapped with the laser optical axis 21, the collimating lens 4 collimates a light beam emitted by the laser device 2 to form approximately parallel light with a small divergence angle, and the collimated light beam is received by a receiving device after striking on an object to be detected (refer to fig. 1, a/b/c); the receiving device is composed of a receiving lens 5, a detector 7, a plane reflector 8 and a second support 6, light rays diffusely reflected by an object to be detected (a/b/c) are converged by the receiving lens 5, reflected by the plane reflector 8 and finally imaged on the detector 7 on the other surface of the circuit board 1, the detector 7 is integrated on the circuit board 1 in a patch mode and the like and is placed in parallel with the circuit board 1, the receiving lens 5 is placed in a certain deflection angle theta through the second support 6, according to the focal length f of the receiving lens 5 and the distance S between the optical axis 21 of the laser and the center of the collimating lens 4, the theta can be directly calculated through a formula f which is S tan theta (refer to figure 1), so that the inclination angle of the receiving lens 5 can be judged, when the main extension lines of the optical axis 21 of the laser, the receiving lens 5 and the detector 7 are intersected at one point, the Samm' S law can be satisfied, no matter how far or near the distance to be measured, the image point and the object point always meet the imaging formula, and clear real images can be formed on the detector 7 through the receiving lens 5; the plane mirror 8 only plays a role of turning the light path in the light path, and ideally, the detector 7 and the circuit board 1 are placed in parallel, so that the plane mirror 8 does not need to be deflected at any angle with the horizontal plane, X1 is equal to X2 (refer to fig. 1), the distance between the plane mirror 8 and the receiving lens 5 is f-X2, and the size of the whole structure is reduced by X1; the detector 7 and the laser 2 are integrated on the same circuit board 1, the detector 7 is integrated on the back of the laser 2, the position of the detector 7 is kept relatively fixed, the stability of the detector is greatly guaranteed, and the detector can be used as a core device of a transmitting device and a receiving device, so that the situation that the whole optical path has large change due to the fact that a certain device is loosened, and the precision is affected or the laser cannot work is caused can be avoided.
In another embodiment, the first support 3 and the second support 6 may be configured to be adjustable, and the distance between the collimating lens 4 and the laser 2 is adjusted by the first support 3, so that the collimating lens 4 at the laser emitting end and the laser 2 reach an optimal focal length. According to the replacement of the receiving lens with different focal lengths f, the laser receiving end can conveniently debug and flexibly replace the optical device by adjusting the distance or the gradient between the second support 6 and the circuit board so as to satisfy the formula f (S) tan theta (refer to fig. 1).
The utility model also provides a laser transceiving module, which applies the transmitting and receiving different-side optical device and improves the detection precision and reliability of the laser transceiving module.
The utility model also provides a laser radar which uses the laser transceiving module, so that the whole volume is smaller, and the reliability is higher.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention.
Claims (10)
1. A laser transmitting and receiving opposite side device is characterized in that: including circuit board (1), laser instrument (2), collimating lens (4), receiving lens (5), detector (7) and plane mirror (8), the upper surface at circuit board (1) is fixed in laser instrument (2), just laser optical axis (21) perpendicular to circuit board (1) of laser instrument (2), collimating lens (4) are fixed in the top of laser instrument (2), just the center of collimating lens (4) and the coaxial setting of laser optical axis (21) of laser instrument (2), receiving lens (5) interval collimating lens (4) slope is installed at the upper surface of circuit board (1), just the inclined plane of receiving lens (5) is towards collimating lens (4), lower surface at circuit board (1) that is close to receiving lens (5) is fixed in detector (7), plane mirror (8) interval is installed in the below of detector (7), and one end of the plane reflector (8) extends to the lower part of the receiving lens (5).
2. The laser transmitting and receiving opposite side device according to claim 1, characterized in that: the laser (2) is fixed on the upper surface of one end of the circuit board (1) in a patch mode, and the detector (7) is fixed on the lower surface of the other end of the circuit board (1) in a patch mode.
3. The laser transmitting and receiving opposite side device according to claim 1, characterized in that: the collimating lens (4) is installed on the circuit board (1) through the first support (3), and the plane of the collimating lens (4) is parallel to the circuit board (1) at intervals.
4. The laser transmitting and receiving opposite side device according to claim 1, characterized in that: receiving lens (5) are installed on circuit board (1) through second support (6), just receiving lens's (5) plane and circuit board (1) are formed with the contained angle.
5. The laser transmitting and receiving opposite side device according to claim 1, characterized in that: the plane reflector (8) is parallel to the circuit board (1) at intervals.
6. The laser transmitting and receiving opposite side device according to claim 1, characterized in that: the extension lines of the laser optical axis (21), the main plane of the receiving lens (5) and the detector (7) are intersected at one point.
7. The laser transmitting and receiving opposite-side device according to claim 3, characterized in that: the first bracket (3) is adjustable.
8. The laser transmitting and receiving opposite-side device according to claim 4, wherein: the second bracket (6) is adjustable.
9. A laser transceiver module, its characterized in that: comprising a laser transmit-receive contralateral device according to any of claims 1 to 8.
10. A lidar, characterized by: comprising the laser transceiver module of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122960704.1U CN216900911U (en) | 2021-11-30 | 2021-11-30 | Laser receiving and transmitting different-side device, laser receiving and transmitting module and laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122960704.1U CN216900911U (en) | 2021-11-30 | 2021-11-30 | Laser receiving and transmitting different-side device, laser receiving and transmitting module and laser radar |
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| Publication Number | Publication Date |
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| CN216900911U true CN216900911U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122960704.1U Active CN216900911U (en) | 2021-11-30 | 2021-11-30 | Laser receiving and transmitting different-side device, laser receiving and transmitting module and laser radar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096194A (en) * | 2022-07-27 | 2022-09-23 | 深圳市深视智能科技有限公司 | Displacement measuring probe, measuring device and displacement measuring method |
| CN115199967A (en) * | 2022-07-15 | 2022-10-18 | 北京环境特性研究所 | Irradiation distance adjustable solar simulator system |
-
2021
- 2021-11-30 CN CN202122960704.1U patent/CN216900911U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199967A (en) * | 2022-07-15 | 2022-10-18 | 北京环境特性研究所 | Irradiation distance adjustable solar simulator system |
| CN115199967B (en) * | 2022-07-15 | 2024-01-12 | 北京环境特性研究所 | Irradiation distance adjustable solar simulator system |
| CN115096194A (en) * | 2022-07-27 | 2022-09-23 | 深圳市深视智能科技有限公司 | Displacement measuring probe, measuring device and displacement measuring method |
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