CN218728015U - Focusing system for improving stability of optical axis and beam divergence angle of focusing laser range finder - Google Patents

Focusing system for improving stability of optical axis and beam divergence angle of focusing laser range finder Download PDF

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Publication number
CN218728015U
CN218728015U CN202221442834.4U CN202221442834U CN218728015U CN 218728015 U CN218728015 U CN 218728015U CN 202221442834 U CN202221442834 U CN 202221442834U CN 218728015 U CN218728015 U CN 218728015U
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adjusting
lens barrel
axial
negative lens
optical axis
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罗杰平
罗丹
尹科
李敬
李勤财
王兴伦
石磊
牟锌龙
黄昆武
王路
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South West Institute of Technical Physics
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South West Institute of Technical Physics
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Abstract

The utility model discloses an improve focusing system of focusing formula laser range finder optical axis, beam divergence angle stability, include: the driving motor drives and adjusts the negative lens barrel to move axially through the driving motor; the positive lens seat is arranged outside the adjusting negative lens barrel; the two groups of radial adjusting mechanisms are respectively arranged at two ends of the positive lens seat and are arranged along the radial direction, and are used for adjusting the radial position of the negative lens barrel; the axial adjusting mechanism is arranged at the axial right end of the adjusting negative lens barrel, the laser emission light source is arranged at the axial right end of the axial adjusting mechanism, the autocollimator is arranged at the axial left end of the adjusting negative lens barrel, and the axial position of the adjusting negative lens barrel is adjusted through the axial adjusting mechanism; and in the process of adjusting the axial movement of the negative lens barrel, the laser emission light source emits laser, and the self-calibration instrument reads out the coordinate position of the laser emission optical axis. The utility model discloses simple structure, processing is convenient, and the assembly and debugging method is nimble, and maneuverability is strong, and intensity is high, and stability is good.

Description

Focusing system for improving stability of optical axis and beam divergence angle of focusing laser range finder
Technical Field
The utility model belongs to the technical field of laser range finder focusing system zooms, a focusing system of transmission focusing formula laser range finder is zooming in-process laser emission optical axis and position is related to, the axiality stability of every single move base face and the stabilising arrangement of big or small bundle angle of loosing at switching-over in-process bundle angle of loosing, the device's characteristics are when the fast switch-over at focusing in-process laser emission bundle angle of loosing, guarantee the flexibility of transmission optical axis and bundle angle of loosing, stability, it is fast to have, it is adjustable, environmental suitability is good, the reliability is high, thereby compromise laser range finder's remote detectivity and closely target capture ability.
Background
The focusing system of the laser range finder has the advantages that the drift amount of a laser emission optical axis is required to be less than 0.01mrad in the zooming process, the variation amount of a beam divergence angle is less than 0.05mm, the traditional optical axis and beam divergence stability is improved by improving the processing precision of phase-locked machine parts, and a motor with small axial float and radial jump amount is selected by screening the axial float and radial jump amount of a zooming motor in the moving process, but the optical axis and beam divergence angle stability of the range finder can be influenced again along with the abrasion of devices and the reduction of the motor moving precision in the using process of the zooming mechanism, and the method cannot meet the requirements of the optical axis and beam divergence stability of the beam divergence zooming system of the range finder.
SUMMERY OF THE UTILITY MODEL
Objects of the first utility model
The utility model aims at: the focusing system device is simple in structure, meets the requirements of the focusing system on the stability of the optical axis and the beam divergence angle in the zooming process, and has the characteristics of flexible assembling and debugging mode, strong operability, high reliability and the like.
(II) technical scheme
In order to solve the technical problem, the utility model provides an improve focusing system of focusing formula laser range finder optical axis, beam divergence angle stability, include: a driving motor 1, a driving screw rod 2, a driving nut 3, a connecting screw rod 4, a first radial adjusting screw 5-1.1, a second radial adjusting screw 5-2.1, a third radial adjusting screw 5-3.1, a fourth radial adjusting screw 5-4.1, a fifth radial adjusting screw 5-5.1, a sixth radial adjusting screw 5-6.1, a seventh radial adjusting screw 5-7.1, an eighth radial adjusting screw 5-8.1, a first pressure spring 5-1.2, a second pressure spring 5-2.2, a third pressure spring 5-3.2, a fourth pressure spring 5-4.2, a fifth pressure spring 5-5.2 the device comprises a sixth pressure spring 5-6.2, a seventh pressure spring 5-7.2, an eighth pressure spring 5-8.2, a first directional steel ball 5-1.3, a second directional steel ball 5-2.3, a third directional steel ball 5-3.3, a fourth directional steel ball 5-4.3, a fifth directional steel ball 5-5.3, a sixth directional steel ball 5-6.3, a seventh directional steel ball 5-7.3, an eighth directional steel ball 5-8.3, an axial adjusting spring 6, an axial adjusting screw 7, an adjusting negative lens barrel 8, a positive lens seat 9, a laser emitting light source 10, an E point 11, a C direction 12 and a D direction 13.
The laser range finder is started, the focusing system is started, the information processing circuit detects the beam divergence angle state of the laser range finder according to received photoelectric tube signals, then the information processing circuit gives out the pulse number in the corresponding direction according to the beam divergence angle state to control the driving motor 1 to move clockwise and anticlockwise to drive the transmission screw rod 2, and the transmission nut 3 and the transmission screw rod 2 mutually move to drive the connecting screw rod 4 to drive the adjusting negative lens barrel 8 to move back and forth along the axial direction 12 and the D direction 13 to realize zooming; in the zooming debugging work, the stress strength of a first pressure spring 5-1.1, a second radial adjusting screw 5-2.1, a third radial adjusting screw 5-3.1, a fourth radial adjusting screw 5-4.1, a fifth radial adjusting screw 5-5.1, a sixth radial adjusting screw 5-6.1, a seventh radial adjusting screw 5-7.1 and an eighth radial adjusting screw 5-8.1 is adjusted through adjusting the first radial adjusting screw 5-1.2, the second pressure spring 5-2.2, the third pressure spring 5-3.2, the fourth pressure spring 5-4.2, the fifth pressure spring 5-5.2, the sixth pressure spring 5-6.2, the seventh pressure spring 5-7.2 and the eighth pressure spring 5-8.2, the radial motion direction of the negative lens barrel 8 is changed by adjusting the first directional steel ball 5-1.3, the second directional steel ball 5-2.3, the third directional steel ball 5-3.3, the fourth directional steel ball 5-4.3, the fifth directional steel ball 5-5.3, the sixth directional steel ball 5-6.3, the seventh directional steel ball 5-7.3 and the eighth directional steel ball 5-8.3, so that the pitching and azimuth coaxiality of the laser emission optical axis and the installation base plane of the host machine is achieved, the friction force between the laser emission optical axis and the positive lens base 9 is reduced, and the flexibility of the zoom system is improved. The axial adjusting screw 7 rotates clockwise and anticlockwise to change the stretching force of the axial adjusting spring 6 to eliminate the self axial movement of the driving motor 1 and ensure the stability of the laser beam divergence angle.
(III) advantageous effects
The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing type laser range finder has the following beneficial effects:
(1) Simple structure and convenient processing. The device for stabilizing the optical axis and the beam divergence angle has the advantages of simple structure, fewer parts, convenient processing and easy implementation.
(2) The laser beam axis and direction, the coaxiality stability of the pitching base plane and the beam divergence angle stability of the large beam divergence and the small beam divergence in the switching process of the focusing system of the focusing laser range finder in the zooming process are met, the laser beam axis drift of the focusing system of the focusing laser range finder in the zooming process is avoided, and the beam divergence angle stability is ensured.
(3) The assembling and debugging method is flexible and has strong operability. The focusing system of the focusing laser range finder can be corrected and adjusted at any time according to the changes of the optical axis and the beam divergence angle, and has the characteristics of flexible debugging form, strong operability of an assembly method and the like.
(4) High strength and high stability. Compared with the traditional focusing system, the focusing system of the focusing laser range finder has the advantages that the stability of the transmitting optical axis and the beam divergence angle is greatly improved, the locking force of the radial adjusting screw can be adjusted according to the torque force of the transmission motor, the friction between the negative lens barrel and the directional steel ball is guaranteed to be adjusted to the minimum, the focusing system of the whole focusing laser range finder is flexible and not prone to shaking in the zooming process, the stability is good, and stable support is provided for the range finder system.
Drawings
Fig. 1 is a front view of the focusing system of the focusing laser range finder according to the present invention.
Fig. 2 isbase:Sub>A cross-sectional view ofbase:Sub>A focusing system of the focusing laser range finder according to the present invention.
Fig. 3 is a B-B cross-sectional view of the focusing system of the focusing laser range finder of the present invention.
Shown in the figure: 1-driving motor, 2-driving screw, 3-driving nut, 4-connecting screw, 5-1.1-first radial adjusting screw, 5-2.1-second radial adjusting screw, 5-3.1-third radial adjusting screw, 5-4.1-fourth radial adjusting screw, 5-5.1-fifth radial adjusting screw, 5-6.1-sixth radial adjusting screw, 5-7.1-seventh radial adjusting screw, 5-8.1-eighth radial adjusting screw, 5-1.2-first pressure spring, 5-2.2-second pressure spring, 5-3.2-third pressure spring, 5-4.2-fourth pressure spring, 5-5.2-fifth pressure spring, 5-6.2-sixth pressure spring, 5-7.2-seventh pressure spring, 5-8.2-eighth pressure spring, 5-1.3-first directional steel ball, 5-2.3-second directional steel ball, 5-3.3-third directional steel ball, 5-4.3-fourth directional steel ball, 5-5.3-fifth directional steel ball, 5-6.3-sixth directional steel ball, 5-7.3-seventh directional steel ball, 5-8.3-eighth directional steel ball, 6-axial adjusting spring, 7-axial adjusting screw, 8-adjusting negative lens barrel, 9-positive lens seat, 10-laser emission light source, 11-E point, 12-C direction, 13-D direction.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following description will make a detailed description of embodiments of the present invention with reference to the accompanying drawings and examples.
As shown in fig. 1, 2 and 3, the focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder in the present embodiment comprises a driving motor 1, a driving transmission mechanism, a radial adjustment mechanism, an adjustment negative lens barrel 8, a positive lens holder 9, an axial adjustment mechanism, a laser emission light source 10 and an autocollimator; the driving motor 1 is connected with one end of the driving transmission mechanism, the other end of the driving transmission mechanism is connected with the side wall of the adjusting negative lens barrel 8, and the driving motor 1 drives the adjusting negative lens barrel 8 to move axially; the positive lens holder 9 is mounted outside the adjusting negative lens barrel 8; two groups of radial adjusting mechanisms are respectively arranged at two ends of the positive lens seat 9 and are arranged along the radial direction, and are used for adjusting the radial position of the negative lens barrel 8; the axial adjusting mechanism is arranged at the axial right end of the adjusting negative lens barrel 8, the laser emission light source 10 is arranged at the axial right end of the axial adjusting mechanism, the autocollimator is arranged at the axial left end of the adjusting negative lens barrel 8, and the axial position of the adjusting negative lens barrel 8 is adjusted through the axial adjusting mechanism; in the process of adjusting the axial movement of the negative lens barrel 8, the laser emission light source 10 emits laser, and the coordinate position of the laser emission optical axis is read by the self-calibration instrument.
The driving transmission mechanism comprises a transmission screw rod 2, a transmission nut 3 and a connecting screw rod 4, the transmission screw rod 2 is arranged at the output end of the driving motor 1, the transmission screw rod 2 is connected with the transmission nut 3, one end of the connecting screw rod 4 is connected with the transmission nut 3, and the other end of the connecting screw rod penetrates through the positive lens seat 9 and is connected with the side wall of the adjusting negative lens barrel 8. The driving motor 1 drives the transmission screw rod 2 to move clockwise or anticlockwise, and the transmission screw rod 2 drives the adjusting negative lens barrel 8 to move axially through the transmission nut 3 and the connecting screw rod 4.
The transmission screw rod 2 is in threaded connection with the transmission nut 3, and the transmission screw rod 2 rotates to drive the transmission nut 3 to move linearly. The transmission nut 3 is fixedly connected with the connecting screw rod 4, and the transmission nut 3 drives the connecting screw rod 4 to move synchronously.
The positive lens seat 9 is provided with an adjusting component mounting hole, each radial adjusting mechanism comprises four groups of adjusting components which are uniformly arranged at intervals along the radial direction, each group of adjusting components comprises a radial adjusting screw, a pressure spring and a directional steel ball which are arranged in the adjusting component mounting hole, the directional steel ball is contacted with the outer side wall of the adjusting negative lens barrel 8, the radial adjusting screw is in threaded connection with the opening of the adjusting component mounting hole, and the pressure spring is positioned between the directional steel ball and the radial adjusting screw. In the zooming process, the radial adjusting mechanism is adjusted, the emitting position of the laser optical axis is changed, and the stability of the emitting optical axis is ensured. In order to achieve adjustment of the change in the axial position of the negative lens-barrel 8, radial adjustment is performed by synchronously adjusting two sets of adjustment members that are diametrically opposed.
The axial adjusting mechanism comprises an axial adjusting spring 6 and an axial adjusting screw 7, one end of the axial adjusting spring 6 is in contact with the end face of the adjusting negative lens barrel 8, and the other end of the axial adjusting spring is pressed by the axial adjusting screw 7.
A dial indicator is arranged on one side of the connecting screw rod 4, and the head of the dial indicator is in contact with the side face of the connecting screw rod 4 and is used for measuring the movement quantity value of the connecting screw rod 4 in the movement process.
Facing the left end face of the adjustment negative lens barrel 8, it is preferable that four sets of adjustment members of each set of radial adjustment mechanisms are respectively arranged in the direction directly above, in the direction directly below, in the direction directly left, and in the direction directly right of the same circumferential circle of the adjustment negative lens barrel 8, that is, the direction directly below is defined as vertically downward, and then the other three directions are sequentially spaced by 90 °.
Referring to fig. 2 and 3, the adjustment assembly of the two sets of radial adjustment mechanisms comprises: 5-1.1 parts of a first radial adjusting screw, 5-2.1 parts of a second radial adjusting screw, 5-3.1 parts of a third radial adjusting screw, 5-4.1 parts of a fourth radial adjusting screw, 5-5.1 parts of a fifth radial adjusting screw, 5-6.1 parts of a sixth radial adjusting screw, 5-7.1 parts of a seventh radial adjusting screw, 5-8.1 parts of an eighth radial adjusting screw, 5-1.2 parts of a first pressure spring, 5-2.2 parts of a second pressure spring, 5-3.2 parts of a third pressure spring, 5-4.2 parts of a fourth pressure spring, 5-5.2 parts of a fifth pressure spring, 5-6.2 parts of a sixth pressure spring, 5-7.2 parts of a seventh pressure spring, 5-8.2 parts of an eighth pressure spring, 5-1.3 parts of a first orienting steel ball, 5-2.3 parts of a second orienting steel ball, 5-3 parts of a third orienting steel ball, 5-4.3 parts of a fourth orienting steel ball, 5-5.3 parts of a fifth orienting steel ball, 5-5.3 parts of a sixth orienting steel ball, 5-3 parts of a seventh orienting steel ball, 5-8.3 parts of orienting steel ball, 3 parts of an orienting steel ball, and an orienting steel ball.
Based on the structure of the focusing system, the focusing method for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder comprises the following steps:
s1: simultaneously starting the laser emission light source 10 and the driving motor 1, driving the transmission screw 2 to do two movements, one is clockwise movement, driving the adjusting negative lens barrel 8 to move 2mm in the direction of the positive lens C by the transmission nut 3 and the connecting screw 4, and the other is counterclockwise movement, driving the adjusting negative lens barrel 8 to move 2mm in the direction of the laser emission D by the transmission nut 3 and the connecting screw 4; and reading out the coordinate positions of the laser emission optical axes after the two movements respectively through a self-calibration instrument.
In this step, both movements are started and measured based on the initial state of the negative lens barrel 8.
S2: the radial runout of the negative lens barrel 8 is adjusted by adjusting the radial runout of the negative lens barrel 8 caused by the movement of the negative lens barrel 8 along the C direction 12 and the D direction 13 respectively, the central value of the radial runout of the negative lens barrel 8 is found out, and the deviation direction of the optical axis of the negative lens barrel 8 is judged according to the obtained central value. Such as: the end face of the negative lens barrel 8 is adjusted to be opposite to the end face of the negative lens barrel 8, when the negative lens barrel 8 is adjusted to move along the C direction 12, the negative lens barrel moves upwards in a radial jumping mode for 2mm, when the negative lens barrel moves along the D direction 13, the negative lens barrel moves downwards in a radial jumping mode for 1mm, the radial jumping center value is 1.5mm, and the optical axis deviation direction is on the upper side. By analogy, the deviation direction of the optical axis is deviated downwards, leftwards, rightwards and the like.
S3: and adjusting an adjusting component of the radial adjusting mechanism according to the deviation direction of the optical axis of the negative lens barrel 8 until the laser emitting optical axis is coaxial with the mounting base plane, wherein the coaxiality is less than 0.01mrad.
The specific adjustment is divided into the following four cases:
(1) the optical axis is deviated to the left, the second radial adjusting screw 5-2.1 and the sixth radial adjusting screw 5-6.1 are screwed clockwise, and the fourth radial adjusting screw 5-4.1 and the eighth radial adjusting screw 5-8.1 are screwed anticlockwise; (2) the optical axis is deviated to the right, the second radial adjusting screw 5-2.1 and the sixth radial adjusting screw 5-6.1 are screwed anticlockwise, and the fourth radial adjusting screw 5-4.1 and the eighth radial adjusting screw 5-8.1 are screwed clockwise; (3) when the optical axis is on the upper side, a first radial adjusting screw 5-1.1 and a seventh radial adjusting screw 5-7.1 are screwed clockwise, and a third radial adjusting screw 5-3.1 and a fifth radial adjusting screw 5-5.1 are screwed anticlockwise; (4) and (3) turning a first radial adjusting screw 5-1.1 and a seventh radial adjusting screw 5-7.1 counterclockwise, and turning a third radial adjusting screw 5-3.1 and a fifth radial adjusting screw 5-5.1 clockwise when the optical axis is deviated downwards.
S4: and repeating the steps S1 to S3 for multiple times, and adjusting the friction force between the radial adjusting mechanism and the negative lens barrel 8 to ensure that the mutual friction coefficient reaches the minimum value, so that the zooming system is flexible and stable in the zooming process.
S5: and simultaneously starting the laser emission light source 10 and the driving motor 1, driving the adjusting negative lens barrel 8 to do reciprocating motion towards the C direction 12 and the D direction 13 along the axial direction, measuring a dial indicator value when reaching a dial indicator head position E point 11, measuring the dial indicator value for three times in a reciprocating way, if the difference of three measurement values is more than 0.01mm, rotating the axial adjusting screw 7 anticlockwise to shorten the length of the axial adjusting spring 6, increasing the extension tension of the axial adjusting spring 6, eliminating the axial float gap of the driving motor 1, finally, reaching the dial indicator with the E point 11 with the three measurement values of less than 0.01mm, leading the beam divergence angle to be 1mrad +/-0.05mrad when going to the C direction 12, and leading the beam divergence angle to be 0.7mrad +/-0.05 mrad when going to the D direction 13.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides an improve focusing system of focusing formula laser range finder optical axis, beam divergence angle stability which characterized in that includes: the device comprises a driving motor (1), a driving transmission mechanism, a radial adjusting mechanism, an adjusting negative lens barrel (8), a positive lens seat (9), an axial adjusting mechanism, a laser emission light source (10) and an autocollimator; the driving motor (1) is connected with one end of the driving transmission mechanism, the other end of the driving transmission mechanism is connected with the side wall of the adjusting negative lens barrel (8), and the adjusting negative lens barrel (8) is driven to move axially through the driving motor (1); the positive lens seat (9) is arranged outside the adjusting negative lens barrel (8); the two groups of radial adjusting mechanisms are respectively arranged at two ends of the positive lens seat (9) and are arranged along the radial direction and used for adjusting the radial position of the negative lens barrel (8); the axial adjusting mechanism is arranged at the axial right end of the adjusting negative lens barrel (8), the laser emission light source (10) is arranged at the axial right end of the axial adjusting mechanism, the autocollimator is arranged at the axial left end of the adjusting negative lens barrel (8), and the axial position of the adjusting negative lens barrel (8) is adjusted through the axial adjusting mechanism; in the process of adjusting the axial movement of the negative lens barrel (8), the laser emission light source (10) emits laser, and the self-calibration instrument reads out the coordinate position of the laser emission optical axis.
2. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 1, wherein the driving transmission mechanism comprises a transmission screw (2), a transmission nut (3) and a connecting screw (4), the transmission screw (2) is arranged at the output end of the driving motor (1), the transmission screw (2) is connected with the transmission nut (3), one end of the connecting screw (4) is connected with the transmission nut (3), and the other end of the connecting screw passes through the positive lens seat (9) and is connected with the side wall of the adjusting negative lens barrel (8).
3. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 2, wherein the transmission screw (2) is in threaded connection with the transmission nut (3), and the transmission screw (2) rotates to drive the transmission nut (3) to move linearly.
4. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 3, wherein the transmission nut (3) is fixedly connected with the connecting screw rod (4), and the transmission nut (3) drives the connecting screw rod (4) to move synchronously.
5. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 4, wherein the positive lens holder (9) is provided with mounting holes for the adjusting components, each set of radial adjusting mechanism comprises four sets of adjusting components uniformly spaced in the radial direction, and one set of adjusting components is mounted in one mounting hole for the adjusting components.
6. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder as claimed in claim 5, wherein each set of said adjusting components comprises a radial adjusting screw, a pressure spring and a directional steel ball installed in the mounting hole of the adjusting component, the directional steel ball is in contact with the outer side wall of the adjusting negative lens barrel (8), the radial adjusting screw is installed at the opening of the mounting hole of the adjusting component in a threaded manner, and the pressure spring is located between the directional steel ball and the radial adjusting screw.
7. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 6, wherein the axial adjusting mechanism comprises an axial adjusting spring (6) and an axial adjusting screw (7), one end of the axial adjusting spring (6) is in contact with the end face of the adjusting negative lens barrel (8), and the other end of the axial adjusting spring is pressed by the axial adjusting screw (7).
8. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 7, wherein a dial indicator is installed on one side of the connecting screw rod (4), and a dial indicator head is in contact with the side surface of the connecting screw rod (4) to measure the movement amount value of the connecting screw rod (4) in the movement process.
9. The focusing system for improving the stability of the optical axis and the beam divergence angle of the focusing laser range finder according to claim 8, wherein the four sets of the adjusting components of each radial adjusting mechanism facing the left end face of the negative lens barrel (8) are respectively arranged in the positive up direction, the positive down direction, the positive left direction and the positive right direction of the same circumference circle of the negative lens barrel (8), the positive down direction is defined as vertical down, and the other three directions are sequentially spaced by 90 °.
10. The focusing system for improving the stability of the optical axis and beam divergence angle of the focusing laser range finder according to claim 9, further comprising an information processing circuit for detecting the beam divergence angle state of the laser range finder according to the received photo tube signal, and then the information processing circuit controls the driving motor (1) to move clockwise and counterclockwise according to the pulse number given by the beam divergence angle state in the corresponding direction.
CN202221442834.4U 2022-06-08 2022-06-08 Focusing system for improving stability of optical axis and beam divergence angle of focusing laser range finder Active CN218728015U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221442834.4U CN218728015U (en) 2022-06-08 2022-06-08 Focusing system for improving stability of optical axis and beam divergence angle of focusing laser range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221442834.4U CN218728015U (en) 2022-06-08 2022-06-08 Focusing system for improving stability of optical axis and beam divergence angle of focusing laser range finder

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CN218728015U true CN218728015U (en) 2023-03-24

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