KR20190089508A - A light emitting module and a scanning LiDAR having the same - Google Patents

Abstract

The present invention relates to a light transmitting module and a scanning LiDAR having the same. An object of the present invention is to reduce a length of the light transmitting module through change of design thereof and to easily control a direction of an optical output of a laser source. The light transmitting module for a scanning LiDAR comprises: a housing having an installation surface formed on a front side and including a reflection mirror obliquely installed thereon and a laser installation hole formed at an opposite side of the installation surface, into which the laser source is inserted to be installed; a pipe-shaped laser source inserted into the laser installation hole and configured to output a pulse laser to the installation surface formed on a front side; the reflection mirror installed on the installation surface of the housing and configured to reflect the pulse laser incident from the laser source to a light transmitting rotation mirror located downward; and an output direction control member connected to the laser source inserted into the laser installation hole and configured to control an output direction of the pulse laser by controlling a location of the laser source in the laser installation hole.

Description

A light emitting module and a scanning laser diode having the same.

The present invention relates to a scanning laser module, and more particularly, to a light source module applicable to a bi-axial type in which transmission and reception of light are separated and a scanning laser module having the same.

Scanning LiDAR is used to measure objects (targets) such as nearby terrain, objects, obstacles, and the like. Such a scanning laser acquires information about an object by measuring the time of returning from the object using a pulsed laser. The information about the object acquired through the scanning line may include information on the existence of the object, the type of the object, and the distance to the object.

Scanning Lidar is used in various fields such as automobile, mobile robot, ship, security system, assembly line, unmanned airplane, drone, etc., and its application field is expanding to various fields.

Scanning Lida collects the diffuse beam output from the high power laser diode as collimated light through a collimation lens (transmission lens) and transmits the light reflected by the object to the photodetector through a large diameter condenser lens (light receiving lens) Optical system structure.

The scanning lidar can be classified into an axial type and a biaxial type according to the transmission and reception method.

Since the scanning and receiving light of the axial type is performed on the same axis, there is no need to separately perform the operation of aligning the light emitting axis and the light receiving axis, and the light emitting module and the light receiving module are disposed on one side of the mirror portion There is an advantage in miniaturization. However, since the light-emitting axis and the light-receiving axis are located on the same axis, the light output from the laser diode is directly reflected by the cover in which light is received and received.

The bi-axial type scanning lidar is the opposite of the advantages and disadvantages of the axial scanning type lidar. That is, since the light emission and the light reception are performed on different axes, there is no problem that the light output from the laser diode is reflected on the cover and is immediately received. However, since the light-emitting axis and the light-receiving axis are implemented on different axes, the work of aligning the light-emitting axis and the light-receiving axis must be separately performed.

Patent Registration No. 10-1707033 (registered on Feb. 28, 2017)

 In addition, since the scanning lidar of the bi-axial type has a structure in which the light-emitting module and the light-receiving module are arranged in a line on both sides of the mirror, there is a problem that the length is designed to be long. For this reason, in order to apply a bi-axial type scanning laser to a platform screen door with a limited length, it is necessary to reduce the length. In other words, since the scanning lidar installed on the platform screen door is installed on the rail passing the train, it is necessary to design the platform screen door shorter than the clearance between the door and the train. It should also be designed to scan through objects on platform screen doors or objects inside platform screen doors through bi-axial type scanning lines.

Assuming that the light-emitting axis and the light-receiving axis are located in the vertical direction in the alignment between the light-emitting axis and the light-receiving axis, a problem may arise in that a scanning image can not be obtained when lateral deviation occurs. That is, the reason why the scanned image can not be obtained is that the reflected light with respect to the light output from the light emitting module is not received by the light receiving module when a right / left deviation occurs.

Accordingly, it is an object of the present invention to provide a light emitting module capable of reducing the length through design modification of a light emitting module and a scanning laser having the light emitting module.

It is another object of the present invention to provide a light emitting module and a scanning laser having the light emitting module, which can easily adjust the left and right direction of the light transmission so as to output light on the light emitting axis.

In order to achieve the above object, according to the present invention, there is provided a laser processing apparatus comprising: a housing having a mounting surface on which a reflective mirror is inclined forwardly and formed on a side opposite to the mounting surface, A tubular laser source inserted into the laser mounting hole and outputting a pulsed laser to a front mounting surface; A reflecting mirror installed on a mounting surface of the housing and reflecting a pulse laser incident from the laser source to a light-transmitting rotating mirror positioned below; And an output direction adjusting member installed to be connected to the laser source inserted in the laser mounting hole and adjusting an output direction of the pulse laser by adjusting a position of the laser source in the laser mounting hole Emitting module.

The housing includes a mounting plate; And a light emitting housing connected to the stationary plate and protruding to the upper portion of the light emitting and rotating mirror and having the mounting surface and the laser mounting hole formed therein.

The light emitting housing may be formed to be larger than the laser source so that the laser mounting hole can adjust the position of the laser source, and may be wider than the upper and lower sides.

In the light-transmitting housing, an engagement groove is formed on the upper and lower sides of the entrance of the laser mounting hole into which the laser source is inserted. The laser source is provided with a latching jaw which is inserted into the latching groove on the outer circumferential surface on the side opposite to the output side of the pulse laser, so that the latching jaw can be rotated right and left in the laser mounting hole with the latching jaw as an axis.

The light emitting housing has an output direction adjusting hole formed therein to communicate with the laser mounting hole. The output direction adjusting member may be connected to the laser source through the output direction adjusting hole to adjust the left / right output direction of the pulse laser by adjusting the left / right position of the laser source.

The output direction adjusting member may include a pin or a bolt.

The reflective mirror may be installed on the mounting surface of the housing at an angle of 45 degrees with respect to the angle at which the pulse laser is incident.

The present invention also provides a rotating mirror unit provided at both ends of a rotating shaft and provided with a light-emitting rotating mirror and a light receiving rotating mirror which are installed to be inclined with respect to the rotating shaft and transmit and receive light in the same direction; A light emitting module disposed adjacent to the light emitting and rotating mirror for outputting a pulse laser in a direction perpendicular to the rotating axis and reflecting the light through a reflecting mirror disposed to face the light emitting rotating mirror and entering the light emitting rotating mirror; And a light receiving module disposed below the rotating shaft so as to face the light receiving rotating mirror and receiving reflected light reflected from the light receiving rotating mirror.

Wherein the rotating mirror portion includes: a motor having both ends of the rotating shaft projected on both sides; The light-emitting rotary mirror coupled to one end of the rotation shaft facing the reflection mirror; And the light receiving rotary mirror coupled to the other end of the rotary shaft toward the light receiving module.

The present invention also provides a body of bi-axial type for irradiating pulsed laser to an object and receiving reflected light reflected from the object; And a case into which the main body is inserted and which protects the main body from the external environment.

The main body includes: a base substrate on which the light receiving module is mounted; A connection substrate electrically connected to one side of the base substrate in a vertical direction; And a mirror substrate on an upper end of the connection substrate, the mirror substrate being coupled to the base substrate and electrically connected to the base substrate, wherein the light emission module and the rotation mirror are provided.

The base substrate and the mirror substrate may be slidably coupled to the inside of the case.

According to the present invention, since the laser source is disposed on the side of the light-emitting rotating mirror to output a pulsed laser to the side of the light-emitting rotating mirror, and the outputted pulse laser is incident on the light-emitting rotating mirror by the reflecting mirror, In order to direct the pulsed laser to the mirror, the distance between the light-emitting mirror and the light-emitting module can be reduced rather than the laser source being arranged in line with the light-emitting mirror.

The light emitting module according to the present invention can easily adjust the right and left output directions of the pulse laser by adjusting the right and left positions of the laser source by using the output direction adjusting member connected to the right and left of the laser source.

1 is a schematic diagram showing a scanning laser according to an embodiment of the present invention.
2 is an exploded perspective view illustrating a scanning line according to an exemplary embodiment of the present invention.
FIG. 3 is a perspective view showing the scanning line of FIG. 2; FIG.
4 is an exploded perspective view of the light emitting module of Fig.
5 is a cross-sectional view of the light-emitting module of Fig.
6 is a front view of the light emitting module of Fig.
Fig. 7 is a plan view of the light-transmitting module of Fig. 4;
8 and 9 are views showing an example in which a scanning lid according to an embodiment of the present invention is installed on a platform screen door.

In the following description, only parts necessary for understanding embodiments of the present invention will be described, and descriptions of other parts will be omitted to the extent that they do not disturb the gist of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

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

1 is a schematic diagram showing a scanning laser according to an embodiment of the present invention.

Referring to FIG. 1, a scanning line 100 according to the present embodiment is a bi-axial type scanning line, and includes a main body 10 and a case 90. The main body 10 performs transmission and reception in a bi-axial type, and irradiates a pulsed laser to the object to receive reflected light reflected from the object. The case 90 is inserted into the body 10 to protect the body 10 from the external environment.

The main body 10 includes a rotating mirror portion 20, a light emitting module 30, and a light receiving module 70. The rotary mirror unit 20 is provided at both ends of the rotary shaft 25 and includes a light emitting rotary mirror 27 and a light receiving rotary mirror 29 which are provided to be inclined with respect to the rotary shaft 25 to transmit and receive light in the same direction . The light emitting module 30 is disposed adjacent to the light emitting rotary mirror 27 and outputs a pulse laser in a direction perpendicular to the rotary shaft 25 and then through a reflecting mirror 60 disposed opposite to the light emitting rotary mirror 27 And is incident on the light-emitting rotary mirror 27. The light receiving module 70 is disposed below the rotary shaft 25 so as to face the light receiving rotary mirror 29 and receives the reflected light reflected by the light receiving rotary mirror 29.

Here, the rotary mirror portion 20 includes a motor 21 having a rotary shaft 25, a light-emitting rotary mirror 27, and a light-receiving rotary mirror 29. Both ends of the rotary shaft 25 protrude from both sides of the motor body 23 with respect to the motor 21. The light emitting rotator 27 is coupled to one end of a rotating shaft 25 which faces the reflecting mirror 60. The light receiving rotary mirror 29 is coupled to the other end of the rotary shaft 25 facing the light receiving module 70.

For example, as shown in Fig. 1, when the rotary shaft 25 of the motor 21 is positioned in the Z-axis direction, the light-emitting rotary mirror 27 and the light-receiving rotary mirror 29 can transmit and receive light in the XY plane And is installed at an angle of 45 degrees with respect to the Z-axis direction. The reflecting surfaces of the light-emitting rotary mirror 27 and the light-receiving rotary mirror 29 are arranged to face in the same direction so that the light-emitting axis and the light-receiving axis are aligned. The light-receiving rotary mirror 27 is provided at one end of the rotary shaft 25 at +45 degrees with respect to the Z-axis direction and the light-receiving rotary mirror 29 is provided at the other end of the rotary shaft 29 \ Respectively. At this time, the reflecting mirror 60 is fixed at +45 degrees with respect to the Z-axis direction so as to face the reflecting surface of the light-emitting rotary mirror 27.

The light emitting module 30 includes a housing 40, a tubular laser source 50, a reflecting mirror 60 and an output direction adjusting member 59. The housing 40 provides a space in which the laser source 50, the reflective mirror 60 and the output direction adjusting member 59 can be installed. The laser source 50 outputs a pulsed laser to the reflective mirror 60. The reflective mirror 60 reflects the pulsed laser incident from the laser source 50 to the underlying light-emitting rotary mirror 27. The output direction adjusting member 59 is provided to be connected to the laser source 50 to adjust the position of the laser source 50 to adjust the output direction of the pulse laser.

For example, when the rotary shaft 25 of the motor 21 is positioned in the Z-axis direction, the laser source 50 irradiates the pulse laser in the Y-axis direction. As described above, the reflecting mirror 60 is fixed at +45 degrees with respect to the Z-axis direction so as to face the reflecting surface of the light-emitting rotary mirror 27, so that the pulse laser incident in the Y- do. The output direction adjusting member 59 is connected to the laser source 50 in the X-axis direction about the laser source 50 to adjust the position of the laser source 50 on the XY plane to adjust the output direction of the pulse laser do. In other words, the output direction adjusting member 59 is used to adjust the output direction of the pulsed laser by rotating the laser source 50 at a predetermined angle in the XY plane with respect to the side opposite to the output side of the pulse laser.

The pulse laser output from the laser source 50 is reflected by the reflecting mirror 60 at 90 degrees and is incident on the light emitting rotary mirror 27 so that the laser source 50 is arranged close to the light emitting rotary mirror 27 . That is, since the laser source 50 is disposed in the direction perpendicular to the rotation axis 25, the increase in length in the Z-axis direction can be reduced, rather than being arranged in the direction coinciding with the rotation axis 27. That is, the length of the scanning line 100 in the Z-axis direction can be reduced.

The light receiving module 70 includes a light receiving lens 71 and a light detector 73. The light receiving lens 71 and the photodetector 73 are sequentially arranged below the light receiving rotary mirror 29 to condense the reflected light reflected by the light receiving rotary mirror 29 and convert it into an electric signal for output.

The light receiving lens 71 is provided so as to face the light receiving rotary mirror 29 under the light receiving rotary mirror 29 and condenses the reflected light reflected by the light receiving rotary mirror 29 to the position where the light detector 73 is installed.

The photodetector 73 is disposed below the light receiving lens 71 so as to face the light receiving lens 71. The light detecting lens 73 is provided so as to be able to stably receive the light condensed by the light receiving lens 71, And receives the light condensed from the light receiving lens 71 and converts it into an electrical signal.

As described above, according to the present embodiment, the laser source 50 is disposed on the side surface of the light-emitting rotary mirror 27 and outputs a pulse laser to the side of the light-emitting rotary mirror 27, It is preferable that the laser source 50 is arranged in a line with the light-emitting rotary mirror 27 so as to irradiate the pulse laser directly to the light-emitting rotary mirror 27, The distance between the mirror 27 and the light-emitting module 30 can be reduced.

The light emission module 30 can adjust the left and right output directions of the pulse laser by adjusting the right and left positions of the laser source 50 using the output direction adjusting member 59 connected to the right and left of the laser source 50. [

The scanning line 100 according to the present embodiment may be implemented as shown in FIGS. 2 and 3. FIG. 2 is an exploded perspective view showing a scanning line 100 according to an embodiment of the present invention. 3 is a perspective view showing the scanning line 100 of FIG.

Referring to FIGS. 2 and 3, the scanning line 100 according to the present embodiment includes a main body 10 and a case 90 as described above.

The main body 10 includes a rotating mirror portion 20, a light emitting module 30 and a light receiving module 70 as described above. The main body 10 further includes a plurality of substrates 81, 83, 85 on which the rotary mirror unit 20, the light emitting module 30, and the light receiving module 70 are mounted. The outer shape of the main body 10 is formed by mutual coupling of the plurality of substrates 81, 83, and 85. The plurality of substrates 81, 83, and 85 include a base substrate 81, a connecting substrate 83, and a mirror substrate 85. Various components are mounted on the plurality of substrates 81, 83, and 85, including a microprocessor that controls the driving of the scanning LAG 100.

The light receiving module 70 is mounted on the upper surface of the base substrate 81. The light receiving lens 71 of the light receiving module 70 is mounted so as to face the upper surface of the base substrate 81.

The connection substrate 83 is vertically coupled to one side of the base substrate 81. One side of the base substrate 81 to which the connection substrate 83 is coupled is opposite to the side where light is received and received.

The mirror unit substrate 85 is coupled to the upper end of the connection substrate 83 so as to face the base substrate 81 and the light emitting module 30 and the rotary mirror unit 20 are installed. That is, the rotary mirror unit 20 is provided on both sides of the mirror substrate 85, and a motor 21 and a light-emitting rotary mirror 27 are provided on the upper surface of the mirror substrate 85, And a light receiving rotary mirror 29 is provided on the lower surface of the light receiving mirror 85. Of course, the other end of the rotation shaft of the motor 21 protrudes from the lower surface of the mirror substrate 85, and the light receiving rotary mirror 29 is provided at the other end of the rotation shaft.

In the present embodiment, the motor 21 is provided on the upper surface of the mirror substrate 85. However, it may be provided on the lower surface of the mirror substrate 85, As shown in FIG.

The light emitting module 30 is installed on the upper surface of the mirror portion substrate 85, and is installed close to the light emitting and rotating mirror 27. The light emitting module 30 is installed on the upper surface of the mirror substrate 85 near the connection substrate 83. The light emitting module 30 will be described later.

The case 90 protects the external environment by providing an internal space 93 in which the body 10 can be housed and positioned. The case 90 includes a case body 91 and a cover 97.

The case body 91 has a box-shaped internal space 93 formed with an opening at one side thereof, and the body 10 is inserted into the internal space 93 through the opening. The case body 91 receives and transmits light through a surface facing the opening, and an IR pass filter 96 may be installed in a region where light is received and received. The case body 91 has a slide groove 95 for guiding the stable engagement of the main body to the side surface adjacent to the opening. The main body 10 is inserted into the inner space 93 of the case body 91 along the slide groove 95 and is stably fixed. The base substrate 81 and the mirror substrate 85 can be slidably engaged along the slide groove 95 formed on the inside of the case body 91, for example. The edge portion of the light receiving module 70 mounted on the base substrate 18 can also be slidably engaged along the slide groove 95 formed in the inside of the case body 91.

The cover 97 covers the opening of the case body 91.

The light emitting module 30 according to this embodiment will be described with reference to FIGS. 4 to 7. FIG. 4 is an exploded perspective view of the light emitting module 30 of FIG. 5 is a cross-sectional view of the light-emitting module 30 of Fig. 6 is a front view of the light emitting module 30 of Fig. And Fig. 7 is a cross-sectional view of the light-emitting module 30 of Fig. 5 is a sectional view of the XZ plane, and FIG. 7 is a sectional view of the XY plane.

The light emitting module 30 includes a housing 40, a tubular laser source 50, a reflecting mirror 60 and an output direction adjusting member 59 as described above. The housing 40 is provided with a mounting surface 41 on which a reflecting mirror 60 is installed so as to be inclined forward and a laser mounting hole 43 in which a laser source 50 is inserted is provided on the side facing the mounting surface 41 Respectively. The laser source 50 is inserted into the laser mounting hole 43 and outputs a pulsed laser to the mounting surface 41 located forward. The reflecting mirror 60 is provided on the mounting surface 41 of the housing 40 and reflects the pulsed laser incident from the laser source 50 to the light-emitting rotating mirror located below. The output direction adjusting member 59 is provided so as to be connected to the laser source 50 inserted in the laser mounting hole 43 to adjust the position of the laser source 50 in the laser mounting hole 43, Adjust the output direction.

Here, the laser source 50 outputs a pulsed laser. The laser source 50 includes a light source that outputs a pulsed laser and a lens that converts the pulsed laser output from the light source into a collimated beam or a divergent beam.

The laser source 50 is installed on one surface of the laser source substrate 87 in a protruding manner. The laser source substrate 87 controls the driving of the laser source 50.

The laser source 50 includes a laser main body 53 and a laser housing 55 into which the laser main body 53 is inserted. The laser housing 55 serves to protect the laser main body 51. The laser housing 55 has a latching protrusion 53 protruding in the Z-axis direction.

The housing 40 includes a mounting plate 48 and a light-emitting housing 49. The mounting plate 48 supports the light-emitting housing 49. The light emitting housing 49 is connected to the stationary plate 48 and protruded upward by a light-emitting rotary mirror. The mounting surface 41 and the laser mounting hole 43 are formed.

At this time, the laser source substrate 87 is coupled to the mounting plate 48. The lower portion of the mounting plate 48 is fixed to the upper surface of the mirror portion substrate.

The light emitting housing 49 has a laser mounting hole 43 formed in front of the mounting plate 48 and a mounting surface 41 is formed on the side facing the laser mounting hole 43. [

The laser mounting hole 43 is formed larger than the laser source 50 so as to adjust the position of the laser source 50, That is, the laser mounting hole 43 is formed to be longer in the Y-axis direction than in the Z-axis direction. The length of the laser mounting hole 43 in the Z-axis direction may correspond to the length of the outer diameter of the laser source 50. For example, the cross-section of the laser mounting hole 43 may be formed in an oval shape having a longer length in the Y-axis direction than in the Z-axis direction.

The light emitting housing 49 is formed with latching grooves 45 corresponding to the latching jaws 51 on the upper and lower sides of the entrance of the laser mounting hole 43 into which the laser source 50 is inserted. That is, the engaging groove 45 is formed in the Z-axis direction.

The laser source 50 is formed with a latching protrusion 51 which is inserted into the latching groove 45 on the outer peripheral surface opposite to the side from which the pulse laser is output. Therefore, it is possible to rotate in the XY plane on the left and right in the laser mounting hole 43 with the stopping jaw 51 as an axis.

The light emitting housing 49 is formed with an output direction adjusting hole 47 so as to communicate with the laser mounting hole 43 in the right and left directions. That is, the output direction adjusting hole 47 is formed in the Y-axis direction.

The output direction adjusting member 59 is connected to the laser source 50 through the output direction adjusting hole 47 to adjust the left and right positions of the laser source 50 to adjust the left and right output directions of the pulse laser. At this time, a pin or a bolt may be used as the output direction adjusting member 59.

It is preferable that the light emission module 30 is assembled such that the pulse laser 50 is output in the X axis direction and can be reflected in the? Z axis direction by the reflection mirror 60. [ However, since the assembly tolerance is generated in the process of assembling the light emission module 30, the assembly tolerance is corrected through the output direction adjustment member 59, and the pulse laser is output in the X axis direction as described above, The output direction of the pulse laser is adjusted so as to be reflected in the Z-axis direction.

The reflecting mirror 60 is installed on the mounting surface 41 of the light-transmitting housing 49 at an angle of 45 degrees with respect to the angle at which the pulse laser is incident. For example, when a pulse laser is output in the X-axis direction, the reflection mirror 60 is installed on the mounting surface 41 at an angle of 45 degrees with respect to the X-axis direction.

An example in which the scanning lid 100 according to the present embodiment is installed in the platform screen door 110 will be described with reference to FIGS. 8 and 9. FIG. 8 and 9 are views showing an example where the scanning RL 100 according to the embodiment of the present invention is installed on the platform screen door 110. [

First, the platform screen door 110 has a structure in which the screen door 120 and the safety door 130 are alternately arranged. The screen door 120 is opened and closed in conjunction with the doorway of the train 150 arriving at the platform where the platform screen door 110 is installed so that the opened screen door 120 is positioned on the safety door 130 side. A problem may occur such that an object is caught in the screen door 120 or an object exists inside the screen door 120 in the process of opening and closing the screen door 120. [

The scanning line 100 scans whether an object is caught in the screen door 120 or an object exists inside the screen door 120 in the process of opening and closing the screen door 120. The scanning lid 100 may be installed above the safety door 130 near the screen door 120.

When the scanning lid 100 is installed on the safety door 130, the scanning lid 100 is positioned such that the light receiving module is located on the side closer to the platform screen door 110 and the light emitting module is located on the far side of the platform screen door 110 And is installed on the upper portion of the safety door 130 so as to be positioned. That is, the light emitting module is installed so as to face the rail on which the train 150 passes.

The scanning lidar 100 can scan an area of 180 degrees based on the installed position and sets the area where the screen door 120 is located as the sensing area 140 among the scanning areas. For example, when it is assumed that the scanning line 100 is installed in the X-axis direction, the scanning line 100 is scanned in the YZ plane.

In this embodiment, the scanning lid 100 is provided on the upper portion of the safety door 130, but the present invention is not limited thereto. Of course, if the scanning lidar can set the screen door as a detection area, it can be installed in another place. For example, if there is an exterior structure that supports the platform screen door 110, a scanning lid 110 may be installed on the exterior structure. Or a scanning lid 100 may be installed under the safety door 130.

It should be noted that the embodiments disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: main body 20: rotating mirror part
21: motor 23: motor body
25: rotating shaft 27: emitting rotating mirror
29: Receiver rotating mirror 30: Transmission module
40: housing 41: mounting surface
43: laser mounting hole 45: latching groove
47: output direction adjusting hole 48: mounting plate
49: light-emitting housing 50: laser source
51: latching jaw 53: laser main body
55: laser housing 59: output direction adjusting member
60: reflection mirror 70: light receiving module
71: receiving lens 73: photodetector
81: base substrate 83: connection substrate
85: mirror substrate 87: laser source substrate
90: Case 91: Case body
93: inner space 95: slide groove
96: IR pass filter 97: Cover
100: Scanning line 110: Platform screen door
120: Screen door 130: Safety door
140: detection area 150: train

Claims (14)

A housing having a mounting surface on which a reflecting mirror inclined forwardly is formed and a laser mounting hole into which a laser source is inserted, the housing facing the mounting surface;
A tubular laser source inserted into the laser mounting hole and outputting a pulsed laser to a front mounting surface;
A reflecting mirror installed on a mounting surface of the housing and reflecting a pulse laser incident from the laser source to a light-transmitting rotating mirror positioned below; And
An output direction adjusting member installed to be connected to the laser source inserted in the laser mounting hole and adjusting an output direction of the pulse laser by adjusting a position of the laser source in the laser mounting hole;
And a light emitting module for scanning light. The connector according to claim 1,
Mounting plate; And
A light-emitting housing connected to the stationary plate and protruding to the upper portion of the light-emitting rotary mirror and having the mounting surface and the laser mounting hole formed therein;
And a light source for emitting light. 3. The method of claim 2,
Wherein the light emitting housing is formed to be larger than the laser source so that the laser mounting hole can adjust the position of the laser source, and is formed to be wider than the upper and lower sides. The method of claim 3,
Wherein the light-transmitting housing has an engagement groove formed on the upper and lower sides of an entrance of the laser mounting hole into which the laser source is inserted,
Wherein the laser source is provided with a latching jaw which is inserted into the latching groove on the outer circumferential surface on the side opposite to the output side of the pulse laser so that the latching jaw can be rotated in the left- A light emitting module for a scanning laser. 5. The method of claim 4,
Wherein the light emitting housing has an output direction adjusting hole formed therein so as to communicate with the laser mounting hole,
Wherein the output direction adjusting member is connected to the laser source through the output direction adjusting hole to adjust a left / right output direction of the pulse laser by adjusting a left / right position of the laser source. 6. The method of claim 5,
Wherein the output direction adjusting member includes a pin or a bolt. The method according to claim 1,
Wherein the reflection mirror is installed on an installation surface of the housing at an angle of 45 degrees with respect to an angle at which the pulse laser is incident. A rotary mirror unit provided at both ends of the rotary shaft and rotating and provided with a light-emitting rotary mirror and a light-receiving rotary mirror which are inclined with respect to the rotary shaft to transmit and receive light in the same direction;
A light emitting module disposed adjacent to the light emitting and rotating mirror for outputting a pulse laser in a direction perpendicular to the rotating axis and reflecting the light through a reflecting mirror disposed to face the light emitting rotating mirror and entering the light emitting rotating mirror; And
A light receiving module disposed below the rotation shaft to face the light receiving rotary mirror and receiving reflected light reflected from the light receiving rotary mirror;
. ≪ / RTI > The light-emitting module according to claim 8,
A housing having a mounting surface on which the reflection mirror is inclined forwardly and which has a laser mounting hole in which a laser source is inserted;
A tubular laser source inserted into the laser mounting hole and outputting a pulsed laser to a front mounting surface;
A reflection mirror installed on a mounting surface of the housing and reflecting the pulse laser incident from the laser source to the light-transmitting rotating mirror located below; And
An output direction adjusting member connected to the laser source inserted in the laser mounting hole and adjusting an output direction of the pulse laser by adjusting a position of the laser source in the laser mounting hole;
Scanning direction. 9. The apparatus according to claim 8,
A motor in which both ends of the rotating shaft project on both sides;
The light-emitting rotary mirror coupled to one end of the rotation shaft facing the reflection mirror; And
A light receiving rotary mirror coupled to the other end of the rotary shaft toward the light receiving module;
Scanning direction. A bi-axial type main body for irradiating a pulsed laser to an object and receiving reflected light reflected from the object; And
And a case into which the body is inserted and which protects the body from the external environment,
The main body includes:
A rotary mirror unit provided at both ends of the rotary shaft and rotating, the rotary mirror unit including a light-emitting rotary mirror and a light-receiving rotary mirror which are inclined with respect to the rotary shaft and transmit and receive light in the same direction;
A light emitting module disposed adjacent to the light emitting and rotating mirror for outputting a pulse laser in a direction perpendicular to the rotating axis and reflecting the light through a reflecting mirror disposed to face the light emitting rotating mirror and entering the light emitting rotating mirror; And
A light receiving module disposed below the rotation shaft to face the light receiving rotary mirror and receiving reflected light reflected from the light receiving rotary mirror;
Scanning direction. 12. The apparatus according to claim 11,
A base substrate on which the light receiving module is mounted;
A connection substrate electrically connected to one side of the base substrate in a vertical direction; And
A mirror substrate mounted on an upper end of the connection substrate and electrically connected to the base substrate so as to be opposite to the base substrate, the light emission module and the rotation mirror portion being provided;
And a scanning unit that scans the scanned image. 13. The method of claim 12,
And the base substrate and the mirror substrate are slidably coupled to the inside of the case. 12. The method of claim 11,
Wherein the scanning lid is used for a platform screen door.

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