KR100489306B1 - Laser articulated arm system - Google Patents

Abstract

The present invention relates to a laser articulated arm system.

The present invention is a laser artificial arm system including an artificial arm for transmitting a laser beam through the interior to a long distance to irradiate the object to work, comprising: an agent for focusing the laser beam is installed inside the front end of the artificial arm transmitted; A convex lens and a second convex lens installed inside the rear end side of the artificial arm and focused by the first convex lens to focus and then diverge the laser beam transmitted while being divergently diverged; It is characterized by.

Therefore, by adjusting the position and the number of apertures of the convex lens, it is possible to effectively adjust the energy level of the laser beam to be irradiated, and to transmit the energy profile of the initial laser beam to the workpiece without any damage to its shape. There is a significant improvement in usability and efficiency.

Description

Laser artificial arm system {LASER ARTICULATED ARM SYSTEM}

The present invention relates to a laser articulated arm system, and more particularly, it is possible to precisely and easily adjust the energy size of the laser beam to be irradiated in real time precisely and to adjust the initial laser beam energy profile of good quality. The present invention relates to a laser prosthetic arm system which transmits without damaging the form so that the final irradiation is possible.

In general, the laser is amplified electromagnetic waves in the infrared or visible light region induced by the quantum oscillator, and has the characteristics of straightness, light condensing, monochromaticity and high energy density. BACKGROUND OF THE INVENTION The field of application is widespread, such as being used for medical applications such as surgery and industrial applications of various surface treatments such as cleaning.

In the application, an artificial arm is assembled to a laser beam emitting device that generates and emits a laser beam, transmits the laser beam to a far distance through the artificial arm, and finally irradiates the object to a work object. An artificial arm system is schematically shown in FIG.

The laser beam emitting device 10 generates and emits a laser beam 30 in the laser oscillator 12 by a power applied from the laser power supply 11, and on the optical path in front of the laser oscillator 12. A reflector or prism 13 may be provided to redirect the direction of the emitted laser beam 30 to the inside of the artificial arm 20 by using the principle of straightness and reflection, which is a characteristic of the laser beam 30. .

The artificial arm 20 transmits the laser beam 30 emitted from the laser beam emitting device 10 to the work object (not shown) side of the irradiation target, and is composed of multiple joints to enable multi-degree of freedom movement.

Its configuration is the socket (21) to be fastened and mounted by fastening means such as fastening bolts on the side of the laser beam emitting device (10), extending the length and enabling rotation, and is transmitted to form an L-shaped optical path The waveguide formed in the form of a hollow tube from the joint 22 to redirect the direction of the laser beam 30 and the laser beam emitter 10 to the irradiation unit 24 described later to transmit the laser beam 30 therein. The unit 23 and the irradiation unit 24 provided at the uppermost end of the waveguide unit 23 and irradiated with the laser beam 30 transmitted through a window (not shown) built in the final object to the workpiece.

Here, the joint portion 22 includes a reflector or prism 22a (hereinafter referred to as a “reflective mirror”) that redirects the direction of the transmitted laser beam 30, and a rotational hole (not shown) to enable rotation. The rotating ball is mainly implemented by a rotating means such as a bearing.

Then, the reflecting mirror 22a is mounted inside the cut-out surface formed by the inclined intersection of the optical paths, and is mounted so that the incident angle becomes 45 ° in order to redirect the direction of the laser beam 30 by 90 °.

As the number of the joints 22 increases, the user's convenience increases due to the multiple degree of freedom of movement, but the manufacturing cost is increased by the number of joints.

When performing various operations using the laser artificial arm system having the above configuration, the necessity of changing the energy size per unit area of the laser beam 30 irradiated inevitably arises.

Therefore, in the related art, an energy delay of the laser beam 30 is controlled by using an electrical delay that adjusts the timing between the lamp inside the laser oscillator 12 and the input signal of the Q switch crystal. Turn off the irradiation of the laser beam 30, modify the energy parameter using the button or the dial in the menu mode of the control panel, turn on the laser power again, and turn on the laser irradiation button (trigger ( The adjustment was made by pressing the trigger button.

Accordingly, the adjustment work is very cumbersome, the workability is greatly degraded, fine and precise energy adjustment is not easy, and there is a disadvantage in that a large difference between the program value and the actual value occurs.

On the other hand, in the case of the laser beam 30, the shape of the energy profile at a position away from the energy profile (that is, near field profile) of the initial laser beam coming directly from the laser oscillator 12 is large. This is because diffraction and interference occur during transmission.

In other words, the near field profile has a spatially uniform “Top Hat” profile, which is very useful for medical treatment and surface treatment. However, as the distance from the laser oscillator 12 increases, the optical characteristic of the laser beam 30 is increased. The Top Hat "profile is broken and transferred to a Gaussian profile with an uneven energy distribution, greatly reducing its usefulness.

However, in the conventional laser artificial arm system, since the laser beam 30 is transmitted as it is to a long distance, the laser beam 30 having an uneven energy distribution is finally irradiated, and thus, there is also a problem in that its usefulness and efficiency are low.

The present invention has been devised to solve the above problems, and by installing a plurality of convex lenses inside the artificial arm, and changing the position and the number of apertures of the convex lens to determine the energy level of the laser beam finally irradiated It can be precisely and easily adjusted in real time, and transmits a high quality laser beam energy profile emitted from the initial laser oscillator without damage by the relay imaging effect of a plurality of convex lenses for final irradiation. Its purpose is to provide a laser artificial arm system.

The present invention for achieving the above object is a laser artificial arm system including an artificial arm for transmitting a laser beam through the interior to a long distance to irradiate the workpiece, which is installed and transmitted inside the front side of the artificial arm Installed in the rear end side of the first convex lens and the artificial arm focusing the laser beam and focused by the first convex lens to focus and parallelly diverge the laser beam transmitted while being divergently diverged so that the final irradiation It provides a laser artificial arm system comprising a second convex lens.

Preferably, the apparatus may further include a third convex lens which is installed behind the second convex lens in the artificial arm, and focuses the laser beam transmitted in parallel by the second convex lens to be finally irradiated. have.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, the same reference numerals are given to the same components as in the related art, and detailed description thereof will be omitted.

Figure 2 is a schematic diagram showing a laser artificial arm system according to a first embodiment of the present invention.

According to the first embodiment, the energy level per unit area of the laser beam 30 irradiated to the workpiece is precisely and easily adjusted in real time, and furthermore, the laser beam energy of excellent quality emitted from the initial laser oscillator 12 Two convex lenses 25 and 26 are installed to be spaced inside the prosthetic arm 20 so that the profile can be transmitted without damage and finally irradiated.

That is, the first convex lens 25 provided at the front side focuses the laser beam 30 transmitted after being introduced into the artificial arm 20, and the second convex lens 26 provided at the rear end side is made of the first convex lens 26. 1 is focused through the convex lens 25 to create a focus 30a, and then collimates the laser beam 30 transmitted while being divergently spread so that the final irradiation is performed in a parallelized state.

Therefore, by moving the first and second convex lenses 25 and 26 back and forth and changing their positions, the energy level of the laser beam 30 to be finally irradiated can be precisely and easily adjusted in real time.

Here, although the positions of the first and second convex lenses 25 and 26 may be changed manually, the automatic transfer means 25a, which automatically changes the positions of the respective convex lenses 25 and 26 for adjustment accuracy and convenience, 26a) may be provided on each side of the convex lenses 25 and 26, and the automatic transfer means 25a and 26a may be simply implemented by an electric motor or the like in a conventional technical level by those skilled in the art.

Further, the laser beam finally irradiated by changing the numerical aperture of the first convex lens 25 to change the distance between the first convex lens 25 and the position of the focus 30a of the laser beam 30. It is also possible to adjust the energy size of (30).

On the other hand, when using a short pulse laser of nano-seconds (typically 10 nsec or less) widely used for medical treatment, when using a spherical convex lens as the first convex lens 25, the focal point 30a is used. In this case, the energy density becomes very high so that an air breakdown, which decomposes the air particles, occurs, so that the effective transmission of the laser beam 30 is impossible. In this case, the first convex lens 25 is a cylindrical convex lens. When using a cylindrical convex lens, a line-shaped focus 30a is formed to smoothly transmit the laser beam 30 without the occurrence of air breakdown.

Furthermore, according to the present invention, since the laser beam 30 is focused and transmitted, the diffraction effect of the laser beam 30 is minimized as the focal point 30a is formed, so that the laser beam energy profile of excellent quality in the initial state is extended to a long distance. It can be kept intact and allowed for final investigation.

In addition, the focus 30a of the laser beam 30 should be positioned so as to be spaced away from the reflecting mirror 22a installed in the articulating part 22 at the rear thereof as much as possible by the high energy density at the focus 30a. You can prevent this from being damaged.

3 is a schematic diagram showing a laser artificial arm system according to a second embodiment of the present invention.

In the second embodiment, as in the above-described first embodiment, the first convex lens 25 on the front side for focusing the laser beam 30 inside the artificial arm 20 and the laser beam that is enlarged and diverged after being focused. In addition to providing the second convex lens 26 on the rear end side for parallelizing the 30, the laser beam transmitted in parallel through the second convex lens 26 on the rear side of the second convex lens 26 on the rear end side ( The third convex lens 27 for converging 30) to be finally irradiated is installed.

As a result, the laser beam energy profile of high quality emitted from the initial laser oscillator 12 by the relay imaging effect by the plurality of convex lenses 25, 26, and 27 to the workpiece without damage of its shape It can be maintained, improving the usefulness and efficiency of medical treatment and surface treatment.

Here, the relay imaging effect means that when the laser beam 30 is focused while being transmitted, the diffraction effect is minimized to maintain and transmit the initial laser beam energy profile to a long distance. In order to obtain the maximum, the separation distance between the convex lenses 25, 26, 27 should be as short as possible.

In the second embodiment, the energy level of the laser beam 30 to be finally irradiated can be adjusted by changing the following conditions.

First, the positions of the first, second and third convex lenses 25, 26 and 27 are changed. To this end, it is also possible to change the position manually as described above, but preferably the automatic transfer means 25a, 26a, 27a for automatically changing the positions of the respective convex lenses 25, 26a, 27a each convex lens 25 , 26, 27 may be provided on the side.

Second, the number of apertures of the first and third convex lenses 25 and 27 is changed.

Finally, the laser artificial arm system according to the present invention can be specifically applied to the following fields.

1. Various treatment areas such as tattoo removal, hair removal, birthmark removal, and surgical surgery

2. Precision surface treatment such as precision mold, PCB, semiconductor package, flat panel display.

In the foregoing description, it should be understood that those skilled in the art can make modifications and changes to the present invention without changing the gist of the present invention as merely illustrative of a preferred embodiment of the present invention.

According to the present invention, by adjusting the position and the number of apertures of the convex lens, it is possible to effectively adjust the energy of the laser beam irradiated finally, and to transmit the energy profile of the initial laser beam to the workpiece without damage to the shape, The effect of significantly improving workability, usability and efficiency can be achieved.

1 is a schematic diagram of a conventional laser artificial arm system,

2 is a schematic diagram of a laser artificial arm system according to a first embodiment of the present invention;

3 is a schematic diagram of a laser artificial arm system according to a second embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10 laser beam emitting device 11 laser power supply

12 laser oscillator 13 reflector or prism

20: artificial arm 21: socket portion

22: joint 22a: reflector or prism

23: waveguide part 24: irradiation part

25: first convex lens 25a, 26a, 27a: automatic transfer means

26: second convex lens 27: third convex lens

30: laser beam 30a: laser beam focus

Claims (5)

A laser artificial arm system including an artificial arm that transmits a laser beam through an interior to a long distance and irradiates a work object, A first convex lens for focusing the laser beam installed and transmitted inside the front end side of the artificial arm; And a second convex lens installed inside the rear end side of the artificial arm so as to be focused by the first convex lens to form a focal point and to parallelly radiate the laser beam transmitted while being divergently diverged. Laser prosthetic system. The method of claim 1, And further comprising a third convex lens which is continuously installed behind the second convex lens in the artificial arm and focuses the laser beam transmitted in parallel by the second convex lens to be finally irradiated. Laser prosthetic system. The method of claim 2, And a position of the first convex lens, the second convex lens and the third convex lens individually to adjust the energy level of the laser beam finally irradiated. The method of claim 2, A laser artificial arm system, characterized in that to change the number of aperture of the first convex lens and the third convex lens individually to adjust the energy level of the laser beam to be irradiated last. The method according to claim 1 or 2, As the first convex lens, Laser artificial arm system, characterized in that using a cylindrical convex lens.