WO2014142558A1

WO2014142558A1 - Long-distance optical axis alignment apparatus and long-distance optical axis alignment method using same

Info

Publication number: WO2014142558A1
Application number: PCT/KR2014/002085
Authority: WO
Inventors: 최원석; 이영호; 신욱현
Original assignee: 국방과학연구소
Priority date: 2013-03-13
Filing date: 2014-03-13
Publication date: 2014-09-18
Also published as: KR101415144B1

Abstract

The long-distance optical axis alignment apparatus according to the present invention comprises: a light source (112) which is stored in a housing (111) and radiates a beam; a target plate (113) having the rear thereof coupled to the end of the housing (111) and having, formed therein, a light transmission hole (113a) through which the beam radiated from the light source (112) passes; and a reflector (120) which is spaced apart from the target plate (113) and reflects the beam radiated from the light source to the target plate (113). This long-distance optical axis alignment method using the apparatus comprises: a beam radiation step (S110) for radiating a beam such that the beam radiated from the light source (112) is directed toward the reflector (120) after passing through the light transmission hole (113a) of the target plate (113); an optical axis alignment determination step (S120) for comparing the light reception position (P) of the beam, which has reached the target plate (113) after being reflected by the reflector (120), with the position of the light transmission hole (113a) so as to check the status of optical axis alignment; an optical axis position adjustment step (S130) for parallelly moving the light source (112) and the target plate (113) in case the light reception position (P) does not match with the position of the light transmission hole (113a); and an optical axis angle adjustment step (S140) for rotating the target plate (113) relative to the light source (112).

Description

Far optical axis alignment device Far optical axis alignment method using this

The present invention relates to an optical axis alignment device and a method for aligning a remote optical axis using the same. More particularly, the optical axis alignment device compares the irradiation position and the light receiving position of the light beam, and adjusts the position of the light source so that the optical axis can be easily aligned at a far distance. An apparatus and a method for aligning a far optical axis using the same.

As a method for determining whether the equipment is correctly mounted in the correct position, it is possible to determine the mounting state of the equipment by checking the alignment of the optical axis using the optical axis alignment device. That is, the alignment state of the optical axis is determined according to whether the optical axis and the reference axis coincide, and it may be determined whether the equipment is correctly mounted according to the alignment state of the optical axis.

When the optical axis is not aligned, the optical axis is out of the intended position, and the optical axis is used to align the optical axis.

However, although optical axis alignment is possible with the naked eye at a short distance, for example, a laboratory scale, it is difficult to visually recognize it at a long distance.

In particular, when the optical axis and the reference axis are not aligned within about 1 degree, it is more difficult to grasp the alignment of the optical axis with respect to the reference axis.

The present invention has been invented to solve the above problems, an object of the present invention is to provide a remote optical axis alignment method using a remote optical axis alignment device that can easily align the optical axis by checking the alignment state of the optical axis even at a distance.

In the remote optical axis alignment device according to the present invention for achieving the above object, a light source accommodated in the housing and irradiating light rays, and a rear surface is coupled to the end of the housing to be integrated with the light source, the light source A light transmission hole through which the light beams radiated from the light source pass is formed to be spaced apart from the light source, and when the optical axis is aligned, a reflection plate of the light beams irradiated from the light source is incident on the light transmission hole, and a target plate perpendicular to the light beams, It is disposed to be spaced apart from the plate, and includes a reflector reflecting the light emitted from the light source to the target plate.

When the light beam irradiated from the light source is reflected by the reflector to compare the position of the light receiving hole with the position received by the target plate, and if the light reflected by the reflector is not reflected into the light hole, the light source and the target plate are moved. And align the optical axis by adjusting the angle of the light source and the target plate.

If the light reflected by the reflector and received by the target plate does not coincide with the light transmitting hole, the light source and the target plate move in a direction from the light transmitting hole toward the light receiving position, and the front end of the housing and the target plate. Is rotated in the direction from the light receiving position toward the light transmitting hole.

It is preferable that the said light source is a laser generator.

In the far optical axis alignment device according to the present invention, an optical axis alignment determination step of checking whether the optical axis is aligned by comparing the light receiving position of the reflected light reflected by the reflector to the target plate with the position of the light transmitting hole, and the reflected light is not incident to the light transmitting hole. If the light receiving position and the position of the light-transmitting hole does not match, the optical axis position adjusting step of moving the light source and the target plate formed integrally with each other in parallel from the light-transmitting hole to the light-receiving position, and the target plate with respect to the light source And an optical axis angle adjusting step of rotating in the direction toward the light transmitting hole at the light receiving position.

After the optical axis angle adjustment step is performed, the optical axis alignment determination step is performed again.

When the light receiving position and the position of the light emitting hole do not coincide, the optical axis position adjusting step and the optical axis angle adjusting step are performed again.

In the optical axis alignment determination step, when the light receiving position of the reflected light beam and the position of the light emitting hole coincide, the optical axis alignment is terminated.

The optical axis position adjusting step is performed after the optical axis angle adjusting step is performed.

Remote optical axis alignment device according to the present invention having the configuration as described above According to the remote optical axis alignment method using the same, it is possible to identify the fine alignment error even at a long distance, it becomes easy to align the optical axis.

In addition, since the position of the laser beam, which is the reflected light on the target plate, is displayed, the optical axis may be adjusted using the displayed position of the laser to match the reference axis.

1 is a schematic view showing a far optical axis alignment device according to the present invention.

Figure 2 is a side view showing a state in which the optical axis and the reference axis in the far optical axis alignment device according to the present invention.

Figure 3 is a side view showing a state in which the optical axis is located below the reference axis in the far optical axis alignment device according to the present invention.

4 is a side view illustrating a state in which the light source and the target plate are moved upward in the state of FIG. 3.

FIG. 5 is a side view illustrating a state in which an optical axis and a reference axis coincide by rotating the target plate downward with respect to the light source in the state of FIG. 4. FIG.

Figure 6 is a side view showing a state in which the optical axis is positioned on the reference axis in the far optical axis alignment device according to the present invention.

7 is a flowchart illustrating a method of aligning a far optical axis according to the present invention.

Hereinafter, a long distance optical axis alignment device according to the present invention with reference to the accompanying drawings will be described in detail.

In the far optical axis alignment device according to the present invention, in order to check whether the reference axis (S) and the optical axis (O) coincide, the light source irradiation unit 110 is irradiated with light rays and the reflected light is received, and the light source irradiation unit 110 It includes a reflector 120 for reflecting the light beam irradiated from).

The light irradiation unit 110 includes a light source 112 for irradiating light rays and a target plate 113 provided adjacent to the light source 112 to receive the reflected light rays.

The light source 112 is accommodated in the housing 111. The light source 112 is accommodated in the housing 111, and when power is applied from the outside, light is emitted from the light source. Light rays emitted from the light source 112 are irradiated to the outside through one side of the housing 111. In this case, the light beam is a laser beam excellent in the straightness, the light source 112 is preferably a laser generator.

The target plate 113 is coupled to the rear surface of the target plate 113 at an end of the housing 111 to be integrated with the light source 112. When the target plate 113 is reflected by the reflector 120, which will be described later, by the light beam emitted from the light source 112, the beam reflected by the reflector 120 is received by the target plate 113. The target plate 113 has a light transmitting hole 113a is formed in the center so that the light beam emitted from the light source can pass. The target plate 113 is installed to be substantially perpendicular to the optical axis O of the light beam, and whether the optical axis is aligned through the light receiving position P, which is a position where the light beam passing through the light transmission hole 113a is reflected. To judge. The light transmitting hole 113a is a path through which the light beam is irradiated, and when the optical axis O and the reference axis S are aligned to coincide with each other, the reflected light beam is a path through which the reflected light beam is incident to the housing 111 again. The target plate 113 is formed in the shape of a disc having a constant diameter as a center, and by identifying the light receiving position (P), it is possible to easily determine the degree of separation between the optical axis (O) and the reference axis (S).

The reflector 120 is disposed to be spaced apart from the target plate 113. The reflector 120 reflects light emitted from an image and a light source to the target plate 113. The reflector 120 is spaced apart from the housing 111 and the target plate 113 which are assembled and integrated with each other in practical application. The reflector 120 is not mechanically coupled to the housing 111 and the target plate 113, is disposed to be spaced apart from the housing 111 and the target plate 113, and has a superior laser beam. Using the light beam, since the reflector 120 can be located at a distance from the housing 111 and the target plate 113, it is possible to easily align the optical axis (O) even at a distance larger than the laboratory size.

Hereinafter, a method of aligning a far optical axis using the far optical axis alignment device will be described.

In the far optical axis alignment method according to the present invention, the light irradiation step (S110) is irradiated so that the light beam irradiated from the light source 112 toward the reflector 120 through the light transmission hole 113a of the target plate 113. And an optical axis alignment to determine whether the optical axis O is aligned by comparing the light receiving position P of the light beam reflected by the reflector 120 to the target plate 113 and the position of the light transmitting hole 113a. Determination step (S120) and. If the positions of the light receiving position P and the light transmitting hole 113a do not coincide, the light source 112 and the target plate 113 are directed toward the light receiving position P from the light transmitting hole 113a. Optical axis position adjusting step (S130) to move, and by rotating the target plate 113 with respect to the light source 112 toward the reference axis (S) with respect to the light source 112, the optical axis (O) The optical axis angle adjusting step S140 coincident with the reference axis S is included.

In the light irradiation step (S110), light rays are irradiated to the outside from the light source 112. When power is applied to the light source 112 which is a laser generator, a laser beam is irradiated. When the laser beam is irradiated from the light source 112, since the laser beam has a straightness, the optical axis O is formed by the laser beam.

In the optical axis alignment determination step (S120), the optical axis O is aligned with the reference axis S to determine whether the optical axis O is aligned.

When the optical axis O and the reference axis S coincide with each other, as shown in FIG. 2, the reference axis S and the optical axis O overlap, and at this time, the laser beam irradiated from the light source 112 is The light is irradiated to the reflector 120 through the light-transmitting hole 113a, and then is incident on the light-transmitting hole 113a after being reflected by the reflector 120. Therefore, when the laser beam reflected from the reflector 120 is incident to the light transmission hole 113a, it is determined that the optical axis O is aligned.

However, due to various factors, the optical axis O and the reference axis S do not coincide. In this case, after the laser beam irradiated through the light-transmitting hole 113a is reflected by the reflector 120, the The light is received at an arbitrary position of the target plate 113. When the laser beam reflected by the light transmission hole 113a does not enter and is received at an arbitrary position of the target plate 113, it is determined that the optical axis is not aligned.

As described above, when the optical axis O and the reference axis S do not coincide with each other, the positions of the light source 112 and the target plate 113 so that the optical axis O and the reference axis S coincide. By moving and adjusting the angle, the optical axis O and the reference axis S are coincident with each other.

First, in the optical axis position adjusting step (S130), the light source irradiation unit 110, that is, the light source 112 and the target plate 113 together with the light transmitting hole 113a so as to move the position of the optical axis O in parallel. In the direction toward the light receiving position (P). The optical axis O is primarily adjusted by moving the light source irradiator 110 in the direction in which the light receiving position P is located in the light transmitting hole 113a.

The optical axis angle adjusting step S140 is secondarily adjusted to match the reference axis S by adjusting the angle of the optical axis O primarily adjusted in the optical axis position adjusting step S130. In the optical axis angle adjustment step (S140), by rotating the target plate 113 with respect to the light source 112 in the direction toward the light-transmitting hole (113a) from the light receiving position (P), the angle of the optical axis (O) Adjust

For example, as shown in FIG. 3, the light transmission hole 113a is positioned below the reference axis S, and the light receiving position P is the reference axis S with respect to the reference axis S. 4, the light source 112 and the target plate 113 are moved upwards as indicated by arrow A, and then the light source is shown as shown in FIG. The target plate 113 is rotated clockwise (arrow B direction) with respect to 112.

As described above, if the optical axis O due to the light beam radiated from the light source 112 does not coincide with the reference axis S, by moving the optical axis O in parallel, by adjusting the angle of the optical axis O, The optical axis O is made to coincide with the reference axis S.

6, with the reference axis S as the center, the light transmitting hole 113a is positioned above the reference axis S, and the light receiving position P is the reference axis S. 6, the light source 112 and the target plate 113 are moved downward, and then the target plate 113 is rotated counterclockwise (arrow B 'direction) as shown by arrow A' of FIG. 6. The optical axis O and the reference axis S are made to coincide.

In the same principle, the optical axis O and the reference axis S do not coincide, so that the light-transmitting hole 113a is located on the left side of the reference axis S, and the light receiving position P is located on the right side of the reference axis S. In this case, the light source 112 and the target plate 113 is moved to the right, and then rotates the target plate 113 to the left, the light-transmitting hole 113a is the right side of the reference axis (S), the light receiving position (P) ) Is located at the left side of the reference axis S, the light source 112 and the target plate 113 is moved to the left, and then rotates the target plate 113 to the right to align the optical axis.

In addition, even when the optical axis (O) is located in the middle of the reference axis (S), rather than up, down, left, right, by adjusting the position and angle of the optical axis (O), The reference axis S is made to coincide.

As described above, after the optical axis position adjusting step S130 and the optical axis angle adjusting step S140 are performed, the optical axis alignment determining step S120 is performed again to adjust the optical axis O to the reference axis S. Check again for a match. If the optical axis O does not coincide with the reference axis S, the optical axis position adjusting step S130 and the optical axis angle adjusting step S140 are repeatedly performed.

The optical axis position adjusting step (S130), the optical axis position adjusting step (S130) and the optical axis angle adjusting step (S140) are repeatedly performed, so that the optical axis (O) and the reference axis (S) coincide, and finally the optical axis If (O) and the reference axis S coincide, the operation of aligning the optical axis is finished.

On the other hand, the optical axis position adjusting step (S130) and the optical axis angle adjusting step (S140) may be performed in a reversed order, the optical axis position adjusting step (S140) after the optical axis angle adjusting step (S140) is performed ( S130) may be performed.

Claims

A light source housed in the housing to irradiate light rays;

A rear surface is coupled to an end of the housing to be integral with the light source, and a light transmitting hole through which light emitted from the light source passes is formed to be spaced apart from the light source, and when the optical axis is aligned, the reflected light of the light emitted from the light source is A target plate incident to the light transmission hole and installed perpendicular to the light beam,

And a reflector disposed to be spaced apart from the target plate and reflecting the light emitted from the light source to the target plate.
The method of claim 1,

When the light beam irradiated from the light source is reflected by the reflector to compare the position of the light receiving hole with the position received by the target plate, and if the light reflected by the reflector is not reflected into the light hole, the light source and the target plate are moved. And aligning an optical axis by adjusting an angle of the light source and the target plate.
The method of claim 2,

If the light reflected by the reflector and received by the target plate does not coincide with the floodlight hole,

The light source and the target plate is moved in the direction toward the light receiving position from the light transmitting hole,

And a front end of the housing and the target plate to rotate in a direction from the light receiving position toward the light transmitting hole.
The method according to any one of claims 1 to 3,

And the light source is a laser generator.
An optical axis alignment determination step of confirming whether the optical axis is aligned by comparing the light receiving position of the reflected light reflected by the reflector to the target plate with the position of the light transmitting hole;

An optical axis position adjusting step of moving the light source and the target plate formed integrally with each other in parallel to the light receiving position when the reflected light is not incident to the light transmitting hole so that the positions of the light receiving position and the light transmitting hole do not coincide;

And an optical axis angle adjusting step of rotating the target plate in the direction from the light receiving position toward the light transmitting hole with respect to the light source.
The method of claim 5,

After the optical axis angle adjustment step is performed, the optical axis alignment determination step is performed again.
The method of claim 6,

And the optical axis position adjusting step and the optical axis angle adjusting step are performed again when the light receiving position and the position of the light transmitting hole do not coincide with each other.
The method according to claim 5 or 6,

In the optical axis alignment determination step,

And the optical axis alignment is terminated when the position of the reflected light beam and the position of the light-transmitting hole coincide with each other.
The method according to claim 5 or 7,

And the optical axis position adjusting step is performed after the optical axis angle adjusting step is performed.