CN112558315A

CN112558315A - Multi-path light splitting system

Info

Publication number: CN112558315A
Application number: CN202011324647.1A
Authority: CN
Inventors: 刘建涛; 侯峙云; 周桂耀; 夏长明
Original assignee: South China Normal University
Current assignee: South China Normal University
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-26
Anticipated expiration: 2040-11-23
Also published as: CN112558315B

Abstract

The invention discloses a multi-path light splitting system, which comprises: the laser comprises a laser (1), a servo motor (2), a motor controller (3), a laser controller (4), a rotary reflector (5), a driver (6), a first reflector group (7) and a second reflector group (8), wherein the laser emits laser pulses, and the frequency and the power of the laser pulses are controlled by the laser controller; a plurality of rotary reflectors are uniformly distributed and fixed on the rotary shaft of the servo motor, and a motor controller controls a driver to drive the servo motor and drive the rotary reflectors to rotate; after being reflected by the rotary reflector, the laser pulse sequentially passes through the first reflector group and the second reflector group to divide a beam of laser pulse into multiple paths of laser pulses which are output in the same direction. The invention has compact structure and convenient regulation and control, is applied to the CO2 laser fiber acupuncture instrument to rapidly and repeatedly act on a plurality of acupuncture points of a human body, and can keep the stability and the uniform control of the laser of each acupuncture point.

Description

Multi-path light splitting system

Technical Field

The invention relates to the field of laser optical systems, in particular to a laser beam splitting optical system.

Background

The laser has wide application, and in the fields of laser processing, laser medical treatment and laser detection, multiple paths of pulse lasers emitted by the same laser are often needed, some lasers are used for ensuring the consistency of laser parameters such as the pulse width of multiple paths, and other lasers are used for meeting the requirements of being convenient for periodic and repeated operation.

For example, in a CO2 laser fiber optic acupuncture apparatus, a laser is required to emit multiple beams, control the power and frequency of laser pulses, and rapidly and repeatedly act on multiple acupuncture points of a human body, including multiple acupuncture points near the same joint, even multiple acupuncture points near different joints. If a plurality of lasers are adopted, on one hand, the control is inconvenient, the stability and consistency of the laser pulse frequency and the power of each acupuncture point are difficult to ensure, and on the other hand, the cost is high, so that a multi-path light splitting system is needed to be matched with a single laser to solve the problem.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a multi-path light splitting system which can control lasers emitting in different light path directions respectively in a short time. The device provides a solution for realizing repeated and periodic action on a plurality of sets of optical path systems by the same laser light source in a short time, and is suitable for the CO2 laser fiber acupuncture instrument to quickly and repeatedly act on a plurality of acupuncture points of a human body.

The present invention provides a multi-path light splitting system, comprising: the laser device comprises a laser device 1, a servo motor 2, a motor controller 3, a laser controller 4, a rotary reflector 5, a driver 6, a first reflector group 7 and a second reflector group 8, wherein the laser device 1 emits laser pulses, and the frequency and the power of the laser pulses are controlled by the laser controller 4; a plurality of rotary reflectors 5 are uniformly distributed and fixed on a rotary shaft of the servo motor 2, the motor controller 3 controls the driver 6 to drive the servo motor 2 and drive the rotary reflectors 5 to rotate; after being reflected by the rotating reflector 5, the laser pulse sequentially passes through the first reflector group 7 and the second reflector group 8, and a beam of laser pulse is divided into multiple paths of laser pulses which are output in the same direction.

The reflectors of the first reflector group 7 are uniformly distributed on the arc-shaped track and are arranged in parallel with the rotating reflectors 5 of the corresponding light path.

The motor controller 3 controls the rotation angle and speed of the servo motor 2.

The laser controller 4 controls the laser pulse triggering time, frequency and power, controls the interaction between the laser pulse and the stay time of the rotation angle of the servo motor 2 through a clock synchronization signal, and only emits the laser pulse in the stay time of the rotary reflector 5.

And controlling the angle of each rotating reflector 5 to enable the laser passing through the rotating reflector 5 and the first reflector group 7 to emit in the same direction.

The final emitting direction of the laser pulses of the multi-path light splitting system is adjusted through the second reflecting mirror group 8, so that the multi-path laser pulses are emitted in the same direction.

The reflectivity of the first reflector group 7 and the second reflector group 8 is more than 95%.

The laser is a CO2 laser, and the laser wavelength is 10.6 mu m.

The multi-path light splitting system is a four-path or six-path or eight-path light splitting system.

Adopt the multichannel beam splitting system of this application, servo motor through high-speed rotation forms the speculum group on different angles, thereby the outgoing of different positions is realized to the laser of same incident position, and reserve out the regulation space in the outgoing direction, compact structure, convenient regulation and control, can satisfy the application scene that needs repeatability, periodic laser effect in the short time simultaneously, be applied to the quick repetitive action of CO2 laser optic fibre acupuncture appearance in a plurality of acupuncture points of human body, can keep the stability and the unified control of the laser at each acupuncture point.

The above and other objects, features and advantages of the present application will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a multi-path optical splitting system according to the present invention (taking four optical paths as an example).

Wherein, 1 is the laser instrument, 2 is servo motor, 3 is the machine controller, 4 is the laser controller, 5 is rotatory speculum, 6 is the driver, 7 is first speculum group, 8 is the second speculum group.

Detailed Description

Embodiments of the present application will be described in detail below. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the present application.

As shown in fig. 1, a demultiplexing system includes: the laser device comprises a laser device 1, a servo motor 2, a motor controller 3, a laser controller 4, a rotary reflector 5, a driver 6, a first reflector group 7 and a second reflector group 8, wherein the laser device 1 emits laser pulses, and the frequency and the power of the laser pulses are controlled by the laser controller 4; a plurality of rotary reflectors 5 are uniformly distributed and fixed on a rotary shaft of the servo motor 2, the motor controller 3 controls the driver 6 to drive the servo motor 2 and drive the rotary reflectors 5 to rotate; after being reflected by the rotating reflector 5, the laser pulse sequentially passes through the first reflector group 7 and the second reflector group 8, and a beam of laser pulse is divided into multiple paths of laser pulses which are output in multiple directions. Wherein the laser is preferred, can be CO2 laser, and laser wavelength 10.6 mu m, laser instrument emergent light power scope: 0.1-5W, 1-15W, 5-50W, 10-100W and the like. Of course other kinds of lasers and suitable transmission parameters may be selected as desired. This embodiment uses four ways beam splitting system as an example, and is corresponding, sets up 4 rotatory speculum 5, and first speculum group 7 also includes 4 speculums, and second speculum group 7 also includes 4 speculums, 4 speculums equipartition of first speculum group 7 are on the arc orbit, and place with 4 rotatory speculums 5 that correspond the light path are parallel.

The motor controller 3 controls and drives the rotation angle and the speed of the servo motor 2 to drive the rotary reflector 5 on the rotation shaft of the servo motor 2 to rotate, the laser controller 4 controls the laser pulse triggering time, the laser pulse triggering frequency and the laser pulse power to stay at a specific rotation angle, the interaction between the laser pulse and the rotation angle stay moment of the servo motor 2 is controlled through a clock synchronization signal, and the laser pulse is emitted only in the stay time of the rotary reflector 5. By controlling the angle of each rotating mirror 5, the laser beams passing through the rotating mirrors 5 and the first mirror group 7 are emitted in the same direction. The reflectivity of the first reflector group 7 and the second reflector group 8 is more than 95%. Preferably, after the laser pulse is horizontally emitted, the laser pulse is horizontally emitted after passing through the rotating reflecting mirror 5 and the corresponding light path reflecting mirror of the first reflecting mirror group 7, and the final emitting direction of the laser pulse of the multi-path light splitting system is adjusted by the second reflecting mirror group 8, so that the multi-path laser pulse is emitted in the same direction.

This application is not limited to the four ways beam split, as required, can realize six ways beam split, eight ways beam split etc. and each way laser derives from same laser source, and each way laser all controls through a laser controller, the fabulous energy uniformity and the stability of having guaranteed each way laser.

Finally, the description is as follows: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. The technical solutions described in the present invention can be modified or some technical features can be replaced with equivalents by those skilled in the art, and the modifications or the replacements do not make the corresponding technical solutions depart from the scope of the present invention.

Claims

1. A multiple-splitting system comprising: the laser comprises a laser (1), a servo motor (2), a motor controller (3), a laser controller (4), a rotary reflector (5), a driver (6), a first reflector group (7) and a second reflector group (8), wherein the laser (1) emits laser pulses, and the frequency and the power of the laser pulses are controlled by the laser controller (4); a plurality of rotary reflectors (5) are uniformly distributed and fixed on a rotary shaft of the servo motor (2), the motor controller (3) controls the driver (6) to drive the servo motor (2) and drive the rotary reflectors (5) to rotate; after being reflected by the rotary reflector (5), the laser pulse sequentially passes through the first reflector group (7) and the second reflector group (8), and a laser pulse is divided into multiple paths of laser pulses which are output in the same direction.

2. The demultiplexing system according to claim 1, wherein: and all the reflectors of the first reflector group (7) are uniformly distributed on an arc-shaped track and are arranged in parallel with all the rotating reflectors (5) of the corresponding light path.

3. The demultiplexing system according to claim 1, wherein: the motor controller (3) controls and drives the rotation angle and the speed of the servo motor (2).

4. The demultiplexing system according to claim 3, wherein: the laser controller (4) controls the triggering time, frequency and power of laser pulses, controls the interaction of the laser pulses and the stopping time of the rotating angle of the servo motor (2) through a clock synchronization signal, and only the laser pulses are emitted in the stopping time of the rotating reflector (5).

5. The demultiplexing system according to claim 1, wherein: and controlling the angle of each rotating reflector (5) to enable the laser passing through the rotating reflector (5) and the first reflector group (7) to emit in the same direction.

6. The demultiplexing system according to claim 1, wherein: the final emitting direction of the laser pulses of the multi-path light splitting system is adjusted through a second reflecting mirror group (8), so that the multi-path laser pulses are emitted in the same direction.

7. The demultiplexing system according to claim 1, wherein: the reflectivity of the lenses of the first reflector group (7) and the second reflector group (8) is more than 95%.

8. The demultiplexing system according to claim 1, wherein: the multi-path light splitting system is a four-path or six-path or eight-path light splitting system.

9. The demultiplexing system according to claim 1, wherein: the laser is CO₂Laser, laser wavelength 10.6 μm.