KR102421807B1 - LiDAR, Light Detection And Ranging - Google Patents

Abstract

The present invention relates to lidar. Lidar according to one aspect, the case; a light output module partially exposed from the outer surface of the case and irradiated with light to an area to be irradiated; and a light receiving module disposed to be spaced apart from the light output module on the outer surface of the case and configured to detect light reflected from the irradiated area, wherein the light output module includes a first lens unit and the first lens a lens unit including a second lens unit located below the negative unit and a third lens unit located below the second lens unit; an actuator for moving the second lens unit; and a light source disposed below the third lens unit.

Description

LiDAR (Light Detection And Ranging)

This embodiment relates to lidar.

LiDAR (Light Detection And Ranging) can irradiate light toward a target and detect the distance, direction, speed, temperature, material distribution and concentration characteristics to the object.

Lidar has been used for weather observation or distance measurement, but recently, it is being studied for autonomous driving and unmanned valet parking.

The lidar includes a light output module for irradiating light to an object, and a light receiving module for detecting the incident light reflected from the object. However, in the conventional optical output module, there is a problem in that the angle of view is fixed according to the shape of the lens. In addition, when a camera module having an auto focus (AF) function or a camera module having an optical image stabilization (OIS) function is applied to the optical output module, the amount of displacement of the angle of view is only a small amount, which is a problem. In addition, in this case, it is also weak to an impact, which causes a problem.

The present invention has been proposed to improve the above problems, and an object of the present invention is to provide a lidar capable of realizing a wide field of view (FOV) while reducing a lens size.

Lidar according to this embodiment, the case; a light output module partially exposed from the outer surface of the case and irradiated with light to an area to be irradiated; and a light receiving module disposed to be spaced apart from the light output module on the outer surface of the case and configured to detect light reflected from the irradiated area, wherein the light output module includes a first lens unit and the first lens a lens unit including a second lens unit located below the negative unit and a third lens unit located below the second lens unit; an actuator for moving the second lens unit; and a light source disposed below the third lens unit.

Lida according to another embodiment, the case; a light output module partially exposed from the outer surface of the case and irradiated with light to an area to be irradiated; and a light receiving module disposed to be spaced apart from the light output module on the outer surface of the case and configured to detect light reflected from the irradiated area, wherein the light output module includes a first lens unit and the first lens a lens unit including a second lens unit located below the negative unit and a third lens unit located below the second lens unit; an actuator for moving the second lens unit; and a light source disposed below the third lens unit, wherein the actuator includes: a substrate electrically connected to the first coil and the second coil; a first housing having a first magnet positioned between the pair of first coils disposed at both ends; and a third housing in which second magnets positioned between the paired second coils are disposed at both ends.

Lidar according to another embodiment, the case; a light output module partially exposed from the outer surface of the case and irradiated with light to an area to be irradiated; a light receiving module disposed to be spaced apart from the light output module on the outer surface of the case and sensing light reflected from the area to be irradiated; and a light guide protruding from a peripheral region where the light receiving module is exposed among the outer surface of the case, wherein the light output module includes a first lens unit and a second lens unit located below the first lens unit. and a lens unit including a third lens unit positioned below the second lens unit; an actuator for moving the second lens unit; and a light source disposed under the third lens unit, wherein a plurality of light guides are provided to face each other, and mutually facing surfaces of the plurality of light guides are formed vertically from the outer surface of the case; , including an inclined surface inclined outwardly from the end of the vertical surface.

There is an advantage that scanning of a light source can be implemented through this embodiment.

In addition, the overall length of the lens driving device can be reduced according to the reduction in the lens size, a wide angle of view can be realized, and the angle of view of the X-axis/Y-axis can be adjusted.

1 is a perspective view of a lidar according to an embodiment of the present invention.
2 is a cross-sectional view showing the configuration of a lidar according to an embodiment of the present invention.
3 is an exploded perspective view of a lidar according to an embodiment of the present invention.
4 is a perspective view illustrating an optical output module according to an embodiment of the present invention;
5 is a cross-sectional view illustrating an optical output module according to an embodiment of the present invention.
6 is a cross-sectional perspective view illustrating a part of an optical output module according to an embodiment of the present invention;
7 is a plan view (conceptual view) illustrating an actuator of an optical output module according to an embodiment of the present invention.
8 is a cross-sectional view taken from X1 - X2 of FIG.
9 is a reference diagram illustrating an operation of an optical output module according to an embodiment of the present invention.
10 is a perspective view illustrating an optical output module according to a second embodiment of the present invention;
11 is an exploded perspective view showing an optical output module according to a second embodiment of the present invention;
12 is a plan view showing an optical output module according to a second embodiment of the present invention;
13 is a cross-sectional view taken along X1 - X2 of FIG. 12;
14 is a cross-sectional view taken along Y1 - Y2 of FIG. 12;
15 is an exploded perspective view showing an actuator of an optical output module according to a second embodiment of the present invention.
16 is an exploded perspective view showing a part of an actuator of an optical output module according to a second embodiment of the present invention;
17 is a bottom perspective view showing a part of an actuator of an optical output module according to a second embodiment of the present invention;
18 and 19 are exploded perspective views showing a part of an actuator of an optical output module according to a second embodiment of the present invention;

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the reference numerals for the components in each drawing, the same components are denoted by the same reference numerals as much as possible even if they are shown in different drawings.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component may be directly connected, coupled, or connected to the other component, but the component and the other component It should be understood that another element may be 'connected', 'coupled' or 'connected' between elements.

Hereinafter, any one of the first magnet 313 , the first coil 314 , the second magnet 323 , and the second coil 324 will be referred to as a 'first driving unit' and the other one will be referred to as a 'second driving unit'. and another one may be referred to as a 'third driving unit' and the other one may be referred to as a 'fourth driving unit'. Meanwhile, the first magnet 313 may be located in the second housing 312 , and the first coil 314 may be located in the first housing 311 . In addition, the second magnet 323 may be located in the fourth housing 322 , and the second coil 324 may be located in the third housing 321 .

Hereinafter, the configuration of the lidar according to the present embodiment will be described.

LiDAR (Light Detection And Ranging) according to the present embodiment may irradiate light toward a target and detect a distance to an object, direction, speed, temperature, material distribution and concentration characteristics, and the like.

Lidar can be used for purposes such as weather observation or distance measurement. Lidar can also be used for autonomous driving and unmanned valet parking.

The lidar according to this embodiment may include a light output module and a light reception module. The lidar may include a light output module for irradiating light to the area to be irradiated. The lidar may include a light receiving module that detects light that is irradiated from the light output module and reflected from the area to be irradiated.

The light receiving module may detect light that is irradiated from the light output module and reflected from the area to be irradiated. The light receiving module may include a substrate 410 , a light receiving sensor (not shown), a heat dissipation member 430 , and a lens driving device. The light receiving module may be manufactured by replacing the light source 420 with a light receiving sensor (not shown) in the light output module. Also, in the light receiving module, the heat dissipation member 430 may be omitted. The description of the substrate 410, the heat dissipation member 430, and the lens driving device of the light receiving module is analogous to the description of the substrate 410, the heat dissipation member 430, and the lens driving device of the optical output module described below. can be applied. The light receiving sensor may detect light that is irradiated from the light output module and reflected from the area to be irradiated. The light receiving sensor may detect infrared light as an example. However, the present invention is not limited thereto.

The light output module may irradiate light to the area to be irradiated. The light output module may include a laser diode. The light output module may irradiate infrared light as an example. However, the present invention is not limited thereto.

Hereinafter, the configuration of the lidar including the optical output module according to the first embodiment of the present invention will be described.

1 is a perspective view of a lidar according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the configuration of a lidar according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the lidar according to an embodiment of the present invention to be.

1 to 3 , the lidar 10 according to an embodiment of the present invention is formed by the case 20 . The case 20 is formed in a substantially rectangular parallelepiped shape, and a space for accommodating electronic components for driving the lidar 10 is formed therein. A separate cover 29 may be coupled to the lower surface of the case 20 . Accordingly, the inner space of the case 20 may be shielded by the coupling of the cover 90 and the case 20 . On the other hand, it is natural that the case 20 and the cover 29 are integrally formed to form a space 25 therein.

A portion of the light output module 30 and the light reception module 50 are respectively exposed to the outside of the case 20 . In other words, a portion of the light output module 30 and the light reception module 50 may be partially exposed through a hole formed in the case 20 . The exposed area may be a lens through which the light irradiated from the light output module 30 is emitted or incident. Accordingly, the lenses may have a shape in which the surface protrudes from the outer surface of the case 20 .

In a region of the outer surface of the case 20 where the light receiving module 50 is exposed, a light guide 60 is formed to protrude adjacent to the light receiving module 50 . In detail, a hole for exposing the light receiving module 50 to the outside may be formed in the case 20 . In addition, the light guide 60 is disposed adjacent to the outer periphery of the hole, and disposed around the light receiving module 50 . For example, when the light receiving module 50 is exposed on the upper surface of the case 20 , the light guide 60 may be disposed to protrude upward from the upper surface of the case 20 . In this case, the upper surface of the case 20 means a surface on which the light receiving module 50 and the light output module 30 are disposed. That is, the light output module 30 and the light receiving module 50 may be disposed together on the upper surface of the case 20 , and may be disposed to protrude from the upper surface of the case 20 .

In addition, a step may be formed on the upper surface of the case 20 in which the light output module 30 and the light receiving module 50 are disposed. That is, as shown in FIG. 1 , the area in which the light receiving module 50 is formed among the upper surface of the case 20 may be stepped to protrude from the area in which the light output module 30 is formed. In addition, the exposed end of the light receiving module 50 , that is, the surface of the first light receiving lens 52 may be disposed to protrude from the end of the light receiving module 500 , that is, the first lens 111 . . However, the present invention is not limited thereto, and depending on the lens design of the optical output module 30 and the optical reception module 50 , the signal of the optical output module 30 may be changed within a range that does not affect the optical reception module 50 . can

The light guide 60 may be a plurality of guides facing each other. In this case, the mutually facing surfaces of the light guide 60 may be defined as the inner surface of the light guide 60 . And, on the inner surface of the light guide 60, a vertical surface 62 vertically formed from the upper surface of the case 20, and an inclined surface 61 formed to be inclined outwardly from the end of the vertical surface 62 to be formed. can Accordingly, the inner surfaces of the plurality of light guides 60 adjacent to each other may have a linear distance increasing upward. For example, the inclined surface 61 may be formed at 1 to 10 degrees based on an imaginary line perpendicular to the upper surface of the case 20 .

The light guide 60 allows the light irradiated from the light output module 30 to be reflected from the irradiated area and guided to the light receiving module 50 . This may guide the reflected light to be incident on the first light receiving lens 52 of the light receiving module 50 . In addition, the light guide 60 may block light incident from the outside, thereby reducing noise caused by external light incident to the light receiving sensor.

In this case, the light guide 60 is disposed so as to be in contact with two surfaces of the first light receiving lens 52 , but is not limited thereto and may be disposed to surround all of the first light receiving lens 52 . However, the light guide 60 may be disposed within a range in which the light irradiated from the light output module 30 does not block the reflected light from the area to be irradiated.

In addition, the light guide 60 is disposed between the light receiving module 50 and the light output module 30 so that the light irradiated from the light output module 30 is transmitted to the light receiving module 30 . Direct reception can be prevented.

In addition, the light guide 60 may be formed to be longer than the longitudinal direction of the first light receiving lens 52 , and may be formed to be higher than the height of the first light receiving lens 52 .

However, when disposed to surround all of the first light receiving lens 52 , it may be formed to be longer than the longitudinal direction of the first light receiving lens 52 and wider than the width direction of the first light receiving lens 52 .

Meanwhile, a substrate hole 22 for extending the flexible substrate 40 to the outside may be formed on a side surface of the case 20 . The substrate hole 22 is formed so that the inside and outside of the case 20 communicate with each other, so that the flexible substrate 40 can extend from the inside of the case 20 to the outside. One end of the flexible substrate 40 may be coupled to the actuator 300 disposed inside the case 20 , and the other end may be coupled to other components from the outside of the case 20 . Accordingly, power for driving the actuator 300 may be supplied or a control command required for driving may be transmitted through the flexible substrate 40 .

2 and 3 , the lidar 10 includes the light output module 30 and the light reception module 50 .

The light receiving module 50 may include light receiving lenses 52 and 54 . The light receiving lenses 52 and 54 include a first light receiving lens 52 at least partially exposed toward the image and a second light receiving lens 54 positioned below the first light receiving lens 52 . may include

At least a portion of the light receiving lenses 52 and 54 may be accommodated in the light guide 60 . The center of the light receiving lenses 52 and 54 may be exposed to the outside. A center portion of the light receiving lenses 52 and 54 may be exposed upward.

The light receiving lenses 52 and 54 may be disposed above the light receiving substrate 56 . The second light receiving lens 54 may be disposed without a space on the upper surface of the light receiving sensor 53 , and may be disposed between the first light receiving lens 52 and the light receiving sensor 53 . The first light receiving lens 52 is spaced apart from the light receiving sensor 53 , and may be coupled to the hole 53a of the light receiving substrate 56 .

Light reflected from the irradiated area and incident through the light receiving lenses 52 and 54 may be incident on the light receiving sensor 53 , and a signal may be input to the light receiving substrate 56 by the light receiving sensor 53 .

The first light receiving lens 52 may have a curved shape with a central portion protruding upward. Accordingly, the light reflected from the area to be irradiated may be easily incident on the first light receiving lens 52 . In addition, the second light receiving lens 54 may be a condensing lens. In addition, the light-receiving lenses 52 and 54 may be relatively more protruded to the outside than the first lens unit 110 to be described later. That is, the regions of the light receiving lenses 52 and 54 exposed to the outside are formed to have a vertical length higher than that of the first lens unit 110 .

A separate substrate 58 may be additionally disposed below the light receiving substrate 56 . The light receiving substrate 56 and the separate substrate 58 may be coupled to each other through fixing screws disposed on opposite sides facing each other. In addition, the light receiving substrate 56 and the separate substrate 58 may be electrically connected by having separate connecting substrates 57 disposed on both sides spaced apart from the fixing screw. A main board 90 is disposed below the separate board 58 to electrically connect the light receiving module 50 and the light output module 30 to each other. The main board 90 may transmit a control command necessary for driving the lidar 10 or provide power to each of the modules 30 and 50 .

Hereinafter, the configuration of the optical output module 30 will be described.

4 is a perspective view illustrating an optical output module according to an embodiment of the present invention, FIG. 5 is a cross-sectional view illustrating an optical output module according to an embodiment of the present invention, and FIG. 6 is an optical output module according to an embodiment of the present invention It is a cross-sectional perspective view showing a part of the module, FIG. 7 is a plan view (conceptual view) showing an actuator of an optical output module according to an embodiment of the present invention, and FIG. 8 is a cross-sectional view taken from X1 - X2 of FIG.

2 and 4 to 8 , the light output module 30 according to the present embodiment may include a substrate 410 , a light source 420 , a heat dissipation member 430 , and a lens driving device. However, in the light output module according to the present embodiment, any one or more of the substrate 410 , the light source 420 , the heat dissipation member 430 , and the lens driving device may be omitted or changed. In particular, the heat dissipation member 430 may be omitted or replaced with another member as a member for dissipating heat generated from the light source 420 .

The substrate 410 may be coupled to the light source 420 . The substrate 410 may be electrically connected to the light source 420 . In this case, the substrate 410 may supply a current necessary for driving the light source 420 . The light source 420 and the first heat sink 431 may be coupled to an upper surface of the substrate 410 . The second heat sink 432 may be coupled to a lower surface of the substrate 410 . The substrate 410 may be, for example, a printed circuit board (PCB). However, the present invention is not limited thereto. In addition, the substrate 410 may be electrically connected to the main substrate 90 disposed on the lower side.

The light source 420 may be located below the lens unit 100 . The light source 420 may be located below the third lens unit 130 . The light source 420 may be coupled to the substrate 410 . The light source 420 may be electrically connected to the substrate 410 . In this case, the light source 420 may receive power from the substrate 410 . The light source 420 may be a laser diode. The light source 420 may irradiate infrared light as an example. However, the present invention is not limited thereto.

The heat dissipation member 430 may contact the light source 420 and/or the substrate 410 . The heat dissipation member 430 may radiate heat generated from the light source 420 . That is, the heat dissipation member 430 may prevent the light source 420 and/or the substrate 410 from being damaged by heat generated by the operation of the light source 420 .

The heat dissipation member 430 may include the first heat dissipation plate 431 and the second heat dissipation plate 432 .

The first heat sink 431 may be coupled to the upper surface of the substrate 410 on which the light source 420 is disposed. The first heat dissipation plate 431 may be in contact with the upper surface of the substrate 410 . The light source 420 may be positioned between the first heat sink 431 and the substrate 410 . That is, the first heat dissipation plate 431 may accommodate at least a portion of the light source 420 . The first heat dissipation plate 431 may be formed in a shape corresponding to the light source 420 in some portions. The first heat dissipation plate 431 may include a disc-shaped body and a protrusion protruding upward from the body to accommodate the light source 420 therein. A thread may be formed on the outer circumferential surface of the protrusion. The third lens barrel 133 may be coupled to the screw thread of the protrusion.

The second heat sink 432 may be coupled to a lower surface of the substrate 410 . The second heat sink 432 may be spaced apart from the lower surface of the substrate 410 at least in part. The second heat sink 432 may be coupled to the first heat sink 431 by a coupling member penetrating the substrate 410 . In this case, the coupling member may be a bolt or screw. Alternatively, the second heat sink 432 may be coupled to the holder unit 200 by a coupling member penetrating the substrate 410 and the first heat sink 431 .

The lens driving device may include a lens unit 100 , a holder unit 200 , and an actuator 300 . However, in the lens driving device according to the present embodiment, any one or more of the lens unit 100 , the holder unit 200 , and the actuator 300 may be omitted or changed.

The lens unit 100 may be disposed to overlap the light source 420 mounted on the substrate 410 . Through this structure, the light emitted from the light source 420 may pass through the lens unit 100 and be emitted to the outside. The lens unit 100 may change the path of at least a portion of the light emitted from the light source 420 . The lens unit 100 may include a plurality of lenses and a barrel for fixing the plurality of lenses. The lens unit 100 may include a total of six lenses. The lens unit 100 may include first to sixth lenses 111 , 112 , 121 , 122 , 131 and 132 . In this case, at least one of the first to sixth lenses 111 , 112 , 121 , 122 , 131 , and 132 may be an aspherical lens. Alternatively, all of the first to sixth lenses 111 , 112 , 121 , 122 , 131 and 132 may be aspherical lenses.

A field of view (FOV) of the lens unit 100 may be 135 degrees to 145 degrees. The angle of view of the lens unit 100 may be formed by the actuator 300 . That is, the angle of view of the lens unit 100 may be secured as the actuator 300 moves at least a part of the lens unit 100 .

The lens unit 100 may include a first lens unit 110 , a second lens unit 120 , and a third lens unit 130 . However, in the lens unit 100 , at least one of the first lens unit 110 , the second lens unit 120 , and the third lens unit 130 may be omitted or changed.

The lens unit 100 may include the first lens unit 110 . At least a portion of the first lens unit 110 may be exposed toward the image. The lens unit 100 may include the second lens unit 120 positioned below the first lens unit 110 . The lens unit 100 may include the third lens unit 130 positioned below the second lens unit 120 .

The first lens unit 110 , the second lens unit 120 , and the third lens unit 130 may be sequentially disposed from the image side to the bottom side. In this case, the light source 420 may be positioned below the third lens unit 130 . However, the first lens unit 110 , the second lens unit 120 , and the third lens unit 130 may be positioned in a different order.

At least a portion of the first lens unit 110 may be accommodated in the holder unit 200 . A central portion of the first lens unit 110 may be exposed to the outside. A central portion of the first lens unit 110 may be exposed toward the image. A peripheral portion of the first lens unit 110 may be accommodated by the holder unit 200 . The peripheral portion of the upper surface of the first lens unit 110 may be fixed by being pressed downward by the cover 220 .

The first lens unit 110 may include a first lens 111 , a second lens 112 , and a first lens barrel 113 . However, in the first lens unit 110 , at least one of the first lens 111 , the second lens 112 , and the first lens barrel 113 may be omitted or changed.

The first lens unit 110 may include the first lens 111 at least partially exposed toward the image. The first lens unit 110 may include the second lens 112 positioned below the first lens 111 .

At least a portion of the first lens 111 may be accommodated in the holder unit 200 . At least a portion of the first lens 111 may be exposed toward the image. A central portion of the first lens 111 may be exposed to the outside. A central portion of the first lens 111 may be exposed toward the image. A peripheral portion of the first lens 111 may be accommodated by the holder unit 200 . The peripheral portion of the upper surface of the first lens 111 may be fixed by being pressed downward by the cover 220 . The first lens 111 may have the largest diameter compared to the second to sixth lenses 112 , 121 , 122 , 131 and 132 .

The second lens 112 may be positioned below the first lens 111 . The second lens 112 may be positioned on the image side of the third lens 121 . A diameter of the second lens 112 may be smaller than a diameter of the first lens 111 and larger than a diameter of the third lens 121 . The second lens 112 may be disposed so that the optical axis of the first lens 111 coincides with the optical axis.

The first lens barrel 113 may accommodate at least a portion of the first lens 111 . The first lens barrel 113 may accommodate at least a portion of the second lens 112 . The first lens barrel 113 may support an outer peripheral surface of the first lens 111 . The first lens barrel 113 may support an outer peripheral surface of the second lens 112 . The first lens barrel 113 may be accommodated in the holder unit 200 . The first lens barrel 113 may be accommodated inside the cover 220 . At least a portion of the first lens barrel 113 may be seated on the holder 210 . At least a portion of a lower surface of the first lens barrel 113 may be supported by the holder 210 . At least a portion of the first lens barrel 113 may have a shape corresponding to that of the holder 210 .

The second lens unit 120 may be coupled to the actuator 300 . The second lens unit 120 may be moved by the actuator 300 . The second lens unit 120 may move in a direction perpendicular to the optical axis of the lens unit 100 . In this case, the movement of the second lens unit 120 in the optical axis direction of the lens unit 100 may be limited. An upper end of the second lens unit 120 may directly contact the first lens unit 110 . The upper end of the second lens unit 120 may support the lower end of the first lens unit 110 . A lower end of the second lens unit 120 may directly contact the third lens unit 130 . A lower end of the second lens unit 120 may be supported by the third lens unit 130 .

The second lens unit 120 may move in a first axis direction perpendicular to the optical axis of the lens unit 100 . The second lens unit 120 may move in a second axis direction perpendicular to the optical axis of the lens unit 100 and different from the first axis direction. In this case, the first axis direction and the second axis direction may be orthogonal to each other. In this case, the first axis direction may be referred to as an 'X-axis direction', and the second axis direction may be referred to as a 'Y-axis direction'. The second lens unit 120 may be movable by 2.8 mm to 3.2 mm in the first axis direction. The second lens unit 120 may be movable by 88 μm to 92 μm in the second axis direction. In this case, the angle of view of the lens unit 100 may be secured at 135 degrees to 145 degrees.

Meanwhile, an adjustment hole 24 (refer to FIG. 1 ) for exposing the second lens unit 120 in a horizontal direction is formed on a side surface of the case 20 . The adjustment hole 24 is formed in a region overlapping the second lens unit 120 in the horizontal direction among the side surfaces of the case 20 to expose the second lens unit 120 to the outside. Accordingly, the operator can adjust the focusing by inserting a separate tool into the adjustment hole 24 to adjust the position of the second lens unit 120 .

The second lens unit 120 may include a third lens 121 , a fourth lens 122 , and a second lens barrel 123 . However, in the second lens unit 120 , at least one of the third lens 121 , the fourth lens 122 , and the second lens barrel 123 may be omitted or changed.

The second lens unit 120 may include the third lens 121 positioned below the second lens 112 . The second lens unit 120 may include the fourth lens 122 positioned below the third lens 121 . In this case, the third lens 121 and the fourth lens 122 may be referred to as a 'drive lens'.

The third lens 121 may be positioned below the second lens 112 . The third lens 121 may be positioned above the fourth lens 122 . The third lens 121 may be fixed to the second lens barrel 123 . The third lens 121 may be coupled to the actuator 300 . The third lens 121 may be moved by the actuator 300 . The third lens 121 may be disposed so that the optical axis coincides with the fourth lens 122 . A diameter of the third lens 121 may correspond to a diameter of the fourth lens 122 .

The fourth lens 122 may be positioned below the third lens 121 . The fourth lens 122 may be positioned above the fifth lens 131 . The fourth lens 122 may be fixed to the second lens barrel 123 . The fourth lens 122 may be coupled to the actuator 300 . The fourth lens 122 may be moved by the actuator 300 .

The second lens barrel 123 may accommodate at least a portion of the third lens 121 . The second lens barrel 123 may accommodate at least a portion of the fourth lens 122 . The second lens barrel 123 may support an outer peripheral surface of the third lens 121 . The second lens barrel 123 may support an outer peripheral surface of the fourth lens 122 . The second lens barrel 123 may be accommodated in the holder unit 200 . The second lens barrel 123 may be coupled to the actuator 300 . The second lens barrel 123 may be moved by the actuator 300 . At least a portion of a lower surface of the second lens barrel 123 may be supported by the third lens barrel 133 .

The third lens unit 130 may be accommodated in the holder 210 . The third lens unit 130 may be located below the second lens unit 120 . The third lens unit 130 may be positioned above the light source 420 . The outer peripheral surface of the third lens unit 130 may be in contact with the inner peripheral surface of the holder 210 . An outer circumferential surface of the third lens unit 130 may be screw-coupled to an inner circumferential surface of the holder 210 . An inner circumferential surface of the third lens unit 130 may be in contact with an outer circumferential surface of the first heat dissipation plate 431 . An inner circumferential surface of the third lens unit 130 may be screw-coupled to an outer circumferential surface of the first heat dissipation plate 431 .

The third lens unit 130 may include the fifth lens 131 , the sixth lens 132 , and the third lens barrel 133 . However, in the third lens unit 130 , at least one of the fifth lens 131 , the sixth lens 132 , and the third lens barrel 133 may be omitted or changed.

The third lens unit 130 may include the fifth lens 131 positioned below the fourth lens 122 . The third lens unit 130 may include the sixth lens 132 positioned below the fifth lens 131 . The third lens unit 130 may include the third lens barrel 133 that accommodates the fifth lens 131 and the sixth lens 132 and is screwed to the inner circumferential surface of the holder 210 . can

The fifth lens 131 may be positioned below the fourth lens 122 . The fifth lens 131 may be positioned above the sixth lens 132 . The fifth lens 131 may be supported by the third lens barrel 133 . The fifth lens 131 may be accommodated in the holder 210 . The fifth lens 131 may be disposed so that optical axes of the first lens 111 and the second lens 112 coincide with each other. The fifth lens 131 may be a lens for focusing. In this case, the fifth lens 131 may be referred to as a 'focusing lens'.

The sixth lens 132 may be positioned below the fifth lens 131 . The sixth lens 132 may be positioned above the light source 420 . The sixth lens 132 may be supported by the third lens barrel 133 . The sixth lens 132 may be accommodated in the holder 210 . The sixth lens 132 may be disposed such that the optical axis coincides with the fifth lens 131 . The sixth lens 132 may be a lens for the collimating. That is, the sixth lens 132 may generate parallel light through the light irradiated from the light source 420 . In this case, the sixth lens 132 may be referred to as a 'collimating lens'.

The third lens barrel 133 may accommodate the fifth lens 131 . The third lens barrel 133 may accommodate the sixth lens 132 . The third lens barrel 133 may support an outer peripheral surface of the fifth lens 131 . The third lens barrel 133 may support an outer peripheral surface of the sixth lens 132 . The third lens barrel 133 may be screw-coupled to the inner circumferential surface of the holder 210 . The third lens barrel 133 may be screw-coupled to the outer peripheral surface of the first heat dissipation plate 431 .

The holder unit 200 may accommodate at least a portion of the lens unit 100 . The holder unit 200 may fix the first lens unit 110 . The holder unit 200 may fix the third lens unit 130 . The holder unit 200 may movably accommodate the second lens unit 120 therein. That is, the holder unit 200 is positioned between the first lens unit 110 and the third lens unit 130 while fixing the first lens unit 110 and the third lens unit 130 . The second lens unit 120 may be movably accommodated. The holder unit 200 may accommodate the actuator 300 for moving the second lens unit 120 therein.

The holder unit 200 may include the holder 210 and the cover 220 . However, in the holder unit 200 , at least one of the holder 210 and the cover 220 may be omitted or changed. In addition, the holder 210 and the cover 220 may be integrally formed. In addition, the holder 210 and the cover 220 may be integrally injection-molded when the case 20 is manufactured to support the lens unit 100 .

The holder unit 200 may include at least a portion of the lens unit 100 and the holder 210 accommodating the actuator 300 therein. The holder unit 200 may include the cover 220 that is screwed to the outer peripheral surface of the holder 210 while pressing the peripheral portion of the upper surface of the first lens 111 downward. The cover 220 may be formed in which an outer peripheral region of the first lens 111 among the upper surface of the case 20 protrudes upward.

The holder 210 may accommodate at least a portion of the lens unit 100 therein. The holder 210 may accommodate the light source 420 therein. The holder 210 may be positioned above the substrate 410 . The holder 210 may be located on the upper surface of the first heat dissipation plate 431 . The holder 210 may be coupled to the heat dissipation member 430 by a coupling member. The holder 210 may be fixed to the substrate 410 . The upper end of the holder 210 may be circular. The lower end of the holder 210 may be circular. The holder 210 may accommodate the actuator 300 therein. The holder 210 may include an actuator accommodating groove having a shape corresponding to the shape of the actuator 300 of a rectangular parallelepiped. In this case, the actuator accommodating groove may be formed as an actuator accommodating hole. The holder 210 may include a lens barrel accommodating hole having a corresponding shape to accommodate the third lens barrel 133 having a cylindrical shape as an outermost shape. In this case, the lens barrel accommodating hole may be formed as a lens barrel accommodating groove. The holder 210 accommodates the lens unit 100 having a cylindrical outermost barrel and may accommodate the actuator 300 having a rectangular parallelepiped shape. The holder 210 may have a circular shape with a lower end and an upper end. The holder 210 may have a groove having a rectangular shape in a cross-section at an intermediate portion thereof.

The cover 220 may press the periphery of the upper surface of the first lens 111 downward. The cover 220 may be screwed to the outer peripheral surface of the holder 210 . The cover 220 may be coupled to the upper portion of the holder 210 . The holder 210 may accommodate the first lens unit 110 therein. The cover 220 may include a hollow hole exposing a portion of the upper surface of the first lens 111 . The cover 220 may be formed in a lower open type. A side surface of the cover 220 may be coupled to a side surface of the holder 210 . A space may be formed therein by the coupling of the cover 220 and the holder 210 . The lens unit 100 and the actuator 300 may be accommodated in the inner space formed by the cover 220 and the holder 210 .

The actuator 300 may be referred to as the 'Voice Coil Motor (VCM)'. The actuator 300 may move the lens unit 100 coupled to the actuator 300 through electromagnetic interaction.

The actuator 300 may move the second lens unit 120 . The actuator 300 may move the second lens unit 120 in a direction perpendicular to the optical axis of the lens unit 100 . In this case, the movement of the second lens unit 120 in the optical axis direction may be limited. Here, the 'optical axis' may be referred to as a 'vertical direction', a 'vertical direction', and a 'Z-axis direction'. Also, the 'direction perpendicular to the optical axis' may be referred to as 'front, rear, left, right,', 'horizontal direction', and 'X-axis/Y-axis direction'. The actuator 300 may move the second lens unit 120 in a first axial direction and a second axial direction. In this case, the first axis direction and the second axis direction may meet to form an inclination. Also, the first axial direction and the second axial direction may be orthogonal to each other. In this case, the first axis may be referred to as an 'X axis', and the second axis may be referred to as a 'Y axis'. That is, the actuator 300 may move the second lens unit 120 in at least one of the X-axis direction and the Y-axis direction.

The actuator 300 may include a first axis driving unit 310 and a second axis driving unit 320 . However, in the actuator 300 , at least one of the first axis driving unit 310 and the second axis driving unit 320 may be omitted or changed.

The actuator 300 may include the first axis driving unit 310 for moving the second lens unit 120 in the first axis direction. The actuator 300 is the second axis driving unit for moving at least a portion of the second lens unit 120 and the first axis driving unit 310 together in a second axis direction different from the first axis direction. 320 may be included.

The first axis driving unit 310 may move the second lens unit 120 in a first axis direction. The first axis driving unit 310 may move the second lens unit 120 in the X-axis direction. In this case, the first-axis driving unit 310 may be referred to as an 'X-axis driving unit'.

The first shaft driving unit 310 includes a first housing 311 , a second housing 312 , a first magnet 313 , a first coil 314 , a first guide part 315 and a first sensor. (316). However, in the first shaft driving unit 310 , the first housing 311 , the second housing 312 , the first magnet 313 , the first coil 314 , and the first guide part Any one or more of 315 and the first sensor 316 may be omitted or changed.

The first axis driving unit 310 may include the first housing 311 to which the second lens unit 120 is coupled. The first shaft driving unit 310 may include the second housing 312 spaced apart from the first housing 311 . The first shaft driving unit 310 may include the first magnet 313 positioned in the first housing 311 . The first shaft driving unit 310 may include the first coil 314 positioned in the second housing 312 and facing the first magnet 313 . The first shaft driving unit 310 may include the first guide part 315 for guiding the movement of the first housing 311 .

The first housing 311 may be coupled to the second lens unit 120 . The first housing 311 may be spaced apart from the second housing 312 . A first guide part 315 may be positioned between the first housing 311 and the second housing 312 . In this case, the movement of the first housing 311 may be guided by the first guide part 315 . The first magnet 313 may be located in the first housing 311 .

A portion of an outer peripheral surface of the first housing 311 may be spaced apart from the second housing 312 . The first housing 311 may be spaced apart from the second housing 312 in a first axial direction. The first housing 311 may be in surface contact with the second housing 312 in a second axial direction. Through this structure, the first housing 311 may move in the first axial direction while the second housing 312 is fixed. In addition, when the second housing 312 moves in the second axial direction, the first housing 311 may also move integrally with the second housing 312 .

The second housing 312 may be spaced apart from the first housing 311 . The second housing 312 may be spaced apart from the third housing 321 . A second guide part may be positioned between the second housing 312 and the third housing 321 . In this case, the movement of the second housing 312 may be guided by the second guide part. The first coil 314 may be positioned in the second housing 312 . However, the first coil 314 may be positioned in the first housing 311 and the first magnet 313 may be positioned in the second housing 312 .

The first magnet 313 may be located in the first housing 311 . The first magnet 313 may be disposed on an outer peripheral surface of the first housing 311 . The first magnet 313 may be disposed on one side surface of the first housing 311 . The first magnet 313 may be provided in plurality and may be arranged around a plurality of side surfaces of the first housing 311 . The first magnet 313 may face the first coil 314 . In this case, when power is supplied to the first coil 314 , the first magnet 313 may move by electromagnetic interaction. In this case, the first housing 311 to which the first magnet 313 is fixed may move integrally with the first magnet 313 . The first housing 311 may move in a first axial direction by electromagnetic interaction between the first magnet 313 and the first coil 314 . The first housing 311 may move in the X-axis direction by electromagnetic interaction between the first magnet 313 and the first coil 314 . In this case, the second lens unit 120 may move integrally with the first housing 311 .

The first coil 314 may be located in the second housing 312 . The first coil 314 may be disposed on an inner circumferential surface of the second housing 312 . The first coil 314 may be disposed on one side of the second housing 312 . The first coil 314 may be provided in plurality and may be arranged around a plurality of side surfaces of the second housing 312 . The first coil 314 may face the first magnet 313 . In this case, when power is supplied to the first coil 314 , the first coil 314 may move the first magnet 313 through electromagnetic interaction.

The first guide part 315 may be positioned between the first housing 311 and the second housing 312 . The first guide part 315 may guide the movement of the first housing 311 . The first guide part 315 may include a guide ball. In this case, the guide ball may be a ceramic ball. The guide ball may be provided in plurality. In this case, the plurality of guide balls may be disposed to be spaced apart from each other. The first guide part 315 may guide the movement of the first housing 311 in the first axial direction. The first guide part 315 may guide the movement of the first housing 311 in the X-axis direction.

The first sensor 316 may detect the position and/or movement of the first housing 311 . The first sensor 316 may be used for feedback of movement with respect to the first housing 311 . The first sensor 316 may be located in the second housing 312 . The first sensor 316 may sense the magnetic field of the first magnet 313 . The first sensor 316 may detect the position of the first housing 311 to which the first magnet 313 is fixed by sensing the magnetic field of the first magnet 313 . The first sensor 316 may be a Hall sensor. However, the present invention is not limited thereto. The first sensor 316 may face the first magnet 313 . The first sensor 316 may be positioned between the plurality of first coils 314 . As a modification, the first sensor 316 may sense a sensing magnet (not shown) that is separately disposed from the first magnet 313 .

The second axis driving unit 320 may move the second lens unit 120 in the second axis direction. The second axis driving unit 320 may move at least a portion of the first axis driving unit 310 in the second axis direction. The second axis driving unit 320 may integrally move at least a portion of the second lens unit 120 and the first axis driving unit 310 . The second axis driving unit 320 may integrally move the second lens unit 120 and the entire first axis driving unit 310 . The second-axis driving unit 320 may be referred to as a 'Y-axis driving unit'.

The second shaft driving unit 320 may include a third housing 321 , a second magnet 323 , a second coil 324 , a second guide unit, and a second sensor 326 . However, in the second shaft driving unit 320 , the third housing 321 , the second magnet 323 , the second coil 324 , the second guide part, and the second sensor 326 ) Any one or more of them may be omitted or changed.

The second shaft driving unit 320 includes the third housing 321 spaced apart from the second housing 312 , the second magnet 323 positioned in the second housing 312 , and the It may include the second coil 324 located in the third housing 321 and facing the second magnet 323 , and a second guide part for guiding the movement of the second housing 312 .

The third housing 321 may be spaced apart from the second housing 312 . Meanwhile, a fourth housing separate from the third housing 321 may be provided. In this case, one of the second magnet 323 and the second coil 324 may be located in the third housing 321 and the other one may be located in the fourth housing. The second coil 324 may be positioned in the third housing 321 . The third housing 321 may be fixed to the holder 210 . The third housing 321 may be coupled to the holder unit 200 . A second guide part may be positioned between the third housing 321 and the second housing 312 . In this case, the movement of the second housing 312 may be guided by the second guide part.

The second magnet 323 may be located in the second housing 312 . The second magnet 323 may be disposed on an outer peripheral surface of the second housing 312 . The second magnet 323 may be disposed on one side surface of the second housing 312 . The second magnet 323 may be provided in plurality and may be arranged around a plurality of side surfaces of the second housing 312 . The second magnet 323 may face the second coil 324 . In this case, when power is supplied to the second coil 324 , the second magnet 323 may move by electromagnetic interaction. In this case, the second housing 312 to which the second magnet 323 is fixed may move integrally with the second magnet 323 . The second housing 312 may move in the second axis direction by electromagnetic interaction between the second magnet 323 and the second coil 324 . In the second housing 312 , the second magnet 323 and the second coil 324 may move in the Y-axis direction by electromagnetic interaction. In this case, the second lens unit 120 and the first housing 311 may move integrally with the second housing 312 .

The second coil 324 may be located in the third housing 321 . The second coil 324 may be disposed on an inner circumferential surface of the third housing 321 . The second coil 324 may be disposed on one side of the third housing 321 . The second coil 324 may be provided in plurality and may be arranged around a plurality of side surfaces of the third housing 321 . The second coil 324 may face the second magnet 323 . In this case, when power is supplied to the second coil 324 , the second coil 324 may move the second magnet 323 through electromagnetic interaction. Meanwhile, a second coil 324 may be positioned in the second housing 312 , and the second magnet 323 may be positioned in the third housing 321 .

The second guide part may be positioned between the second housing 312 and the third housing 321 . The second guide part may guide the movement of the second housing 312 . The second guide part may have a shape corresponding to the first guide part. The second guide unit may include a guide ball. In this case, the guide ball may be a ceramic ball. The guide ball may be provided in plurality. In this case, the plurality of guide balls may be disposed to be spaced apart from each other. The second guide part may guide the movement of the second housing 312 in the second axis direction. The second guide part may guide the movement of the second housing 312 in the Y-axis direction.

The second sensor 326 may detect the position and/or movement of the second housing 312 . The second sensor 326 may be used for feedback of movement of the second housing 312 . The second sensor 326 may be located in the third housing 321 . The second sensor 326 may sense the magnetic field of the second magnet 323 . The second sensor 326 may detect the position of the second housing 312 to which the second magnet 323 is fixed by sensing the magnetic field of the second magnet 323 . The second sensor 326 may be the Hall sensor. However, the present invention is not limited thereto. The second sensor 326 may face the second magnet 323 . The second sensor 326 may be positioned between the plurality of second coils 324 . As a modification, the second sensor 326 may detect a sensing magnet (not shown) that is separately disposed from the second magnet 323 .

Hereinafter, the operation of the optical output module according to an embodiment of the present invention will be described with reference to the drawings.

9 is a reference diagram illustrating an operation of an optical output module according to an embodiment of the present invention.

In this embodiment, the first lens unit 110 , the third lens unit 130 , and the light source 420 are fixed to the substrate 410 . However, the second lens unit 120 may move in the X-axis direction and the Y-axis direction with respect to the substrate 410 . Here, although the movement of the second lens unit 120 is limited to the X-axis/Y-axis, the second lens unit 120 may move in three or more directions according to embodiments.

The light output module according to the present embodiment may irradiate light to a point indicated by start of FIG. 9 . Thereafter, the first axis driving unit 310 moves the second lens unit 120 in a first direction parallel to the X axis by a second distance L2 (see FIG. 9A ). In more detail, when power is supplied to the first coil 314 positioned in the second housing 312 , the first magnet 313 positioned in the first housing 311 moves to the first coil 314 . ) and the electromagnetic interaction to move the second lens unit 120, the first housing 311, and the first magnet 313 integrally in the first direction. At this time, the second housing 312 is maintained in a fixed state.

Thereafter, the second axis driving unit 320 moves the second lens unit 120 in a second direction parallel to the Y-axis direction by a first distance L1 (B). In more detail, when power is supplied to the second coil 324 located in the third housing 321 , the second magnet 323 located in the second housing 312 is moved to the second coil 324 . ) and the electromagnetic interaction to move the second lens unit 120, the first housing 311, the second housing 312, and the second magnet 323 integrally in the second direction. .

Thereafter, the first axis driving unit 310 moves the second lens unit 120 in a third direction opposite to the first direction by a second distance L2 (C). Even in this case, when power is supplied to the first coil 314 , the second housing 312 is fixed to the second lens unit 120 , the first housing 311 , and the first magnet. (313) moves together.

Thereafter, the second axis driving unit 320 moves the second lens unit 120 in the second direction by a first distance L1 (D). Even in this case, when power is supplied to the second coil 324 , the second lens unit 120 , the first housing 311 , the second housing 312 and the second magnet 323 are It moves integrally in the second direction.

Thereafter, as described above, the first axis driving unit 310 and the second axis driving unit 320 alternately operate to move the second lens unit 120 (E, F, G in FIG. 9 ). Reference).

Thereafter, the second shaft driving unit 320 moves in a fourth direction opposite to the second direction by three times the first distance L1 (H). Accordingly, the second lens unit 120 arrives at the point marked End/Start and completes one cycle. In this case, the driving cycle of the second lens unit 120 may be performed at a cycle of 20 Hz. Meanwhile, the first distance L1 illustrated in FIG. 9 may be 30 μm. That is, the Y-axis displacement amount of the optical output module according to the present embodiment may be 90um. Also, the second distance L2 may be 3 mm. That is, the X-axis movement displacement of the light output module according to the present embodiment may be 3 mm.

Hereinafter, the configuration of the optical output module according to the second embodiment of the present invention will be described with reference to the drawings.

10 is a perspective view showing an optical output module according to a second embodiment of the present invention, FIG. 11 is an exploded perspective view showing an optical output module according to a second embodiment of the present invention, and FIG. It is a plan view showing the light output module according to the second embodiment, FIG. 13 is a cross-sectional view viewed from X1 - X2 of FIG. 12, FIG. 14 is a cross-sectional view viewed from Y1 - Y2 of FIG. 12, and FIG. 15 is a second embodiment of the present invention It is an exploded perspective view showing the actuator of the optical output module according to the embodiment, Figure 16 is an exploded perspective view showing a part of the actuator of the optical output module according to the second embodiment of the present invention, Figure 17 is the second of the present invention It is a bottom perspective view showing a part of the actuator of the optical output module according to the embodiment, and FIGS. 18 and 19 are exploded perspective views showing a part of the actuator of the optical output module according to the second embodiment of the present invention.

The light output module according to the second embodiment of the present invention may include a substrate 410 , a light source 420 , a heat dissipation member 430 , and a lens driving device. However, in the optical output module according to the present embodiment, any one or more of the substrate 410 , the light source 420 , the heat dissipation member 430 , and the lens driving device may be omitted or changed. In particular, the heat dissipation member 430 is a member for dissipating heat generated from the light source 420 , and may be omitted or replaced with another member.

In the light output module according to the second embodiment of the present invention, the description of the substrate 410, the light source 420, and the heat dissipation member 430 is, the substrate 410 according to the first embodiment, the light source ( 420) and the description of the heat dissipation member 430 may be analogously applied.

The lens driving apparatus according to the second embodiment of the present invention may include a lens unit 100 , a holder unit 200 , and an actuator 300 . However, in the lens driving apparatus according to the second embodiment of the present invention, any one or more of the lens unit 100 , the holder unit 200 , and the actuator 300 may be omitted.

The description of the lens driving apparatus according to the second embodiment of the present invention may be analogously applied to the description of the lens driving apparatus according to the first embodiment. Accordingly, hereinafter, the lens driving apparatus according to the second embodiment will be mainly described with respect to the differences from the first embodiment.

The holder 210 may include an upper holder part 211 and a lower holder part 212 . However, in the holder 210 , at least one of the upper holder part 211 and the lower holder part 212 may be omitted or changed. In addition, the upper holder part 211 and the lower holder part 212 may be integrally formed.

The upper holder part 211 may be coupled to an upper portion of the lower holder part 212 . The upper holder part 211 may be of a lower open type. The upper holder part 211 may include a protrusion that protrudes upward so that the cover 220 is coupled thereto. The upper holder part 211 may include an opening through which the lens unit 100 passes. A side surface of the upper holder part 211 may be coupled to a side surface of the lower holder part 212 . A side surface of the upper holder part 211 may be coupled to an outer side of a side surface of the lower holder part 212 . The upper holder part 211 and the lower holder part 212 may be coupled by a separate coupling member. In this case, the coupling member may be a bolt or a screw.

The lower holder part 212 may be coupled to a lower portion of the upper holder part 211 . The lower holder part 212 may be of an upper open type. The lower holder part 212 may be screw-coupled to the first heat dissipation plate 431 . The lower holder part 212 may be coupled to the second heat sink 432 through a coupling member. The lens unit 100 and the actuator 300 may be accommodated in the inner space formed by the upper holder part 211 and the lower holder part 212 .

The actuator 300 may include a first axis driving unit 310 , a second axis driving unit 320 , and a substrate 330 . However, in the actuator 300 , at least one of the first axis driving unit 310 , the second axis driving unit 320 , and the substrate 330 may be omitted or modified.

The first shaft driving unit 310 includes a first housing 311 , a second housing 312 , a first magnet 313 , a first coil 314 , a first guide part 315 , and a first sensor. 316 and a first sensing magnet 317 may be included. However, in the first shaft driving unit 310 , the first housing 311 , the second housing 312 , the first magnet 313 , the first coil 314 , and the first guide part At least one of 315 , the first sensor 316 , and the first sensing magnet 317 may be omitted or changed.

The first coil 314 may be provided in two pairs by forming a pair of two coils. In this case, the first magnet 313 may be positioned between the two coils forming a pair. Two of the first magnets 313 may be provided, and one of the first magnets 313 may be located in each of the two pairs of coils. The first coil 314 may be electrically connected to the substrate 330 . The first coil 314 may be coupled to the second coil coupling part 332 and the third coil coupling part 333 of the substrate 330 .

Two of the first guide parts 315 may be provided, one on each of one side and the other side of the first housing 311 . The first guide part 315 may include two guide balls and a guide plate rotatably accommodating the two guide balls. Three holes having a shape corresponding to the diameter of the guide ball may be formed in the guide plate. A guide ball can be accommodated in two of the three holes.

The first sensor 316 may detect a first sensing magnet 317 . The first sensor 316 may be, for example, a Hall sensor. The first sensor 316 may detect a magnetic force of the first sensing magnet 317 . The first sensor 316 may detect the position and/or movement of the first housing 311 to which the first sensing magnet 317 is fixed by detecting the first sensing magnet 317 . The first sensor 316 may be located in the third housing 321 . The first sensor 316 may be disposed to face the first sensing magnet 317 . The first sensor 316 may be electrically connected to the substrate 330 . The first sensor 316 may be coupled to the second sensor coupling unit 336 .

The first sensing magnet 317 may be located in the first housing 311 . The first sensing magnet 317 may be fixed to the outer surface of the first housing 311 . The first sensing magnet 317 may be accommodated in a sensing magnet receiving groove formed on an outer surface of the first housing 311 . The first sensing magnet 317 may face the first sensor 316 . The first sensing magnet 317 may be disposed so as not to affect the electromagnetic interaction between the first magnet 313 and the first coil 314 . The first sensing magnet 317 may be disposed so as not to affect the electromagnetic interaction between the second magnet 323 and the second coil 324 .

The second shaft driving unit 320 includes a third housing 321 , a fourth housing 322 , a second magnet 323 , a second coil 324 , a second guide part 325 , and a second sensor. (326) It may include a second sensing magnet 327 and a sensor accommodating portion (328). However, in the second shaft driving unit 320 , the third housing 321 , the second magnet 323 , the second coil 324 , the second guide part 325 , and the second sensor At least one of 326 , the second sensing magnet 327 and the sensor accommodating part 328 may be omitted or changed.

The second shaft driving unit 320 may include a third housing 321 spaced apart from the second housing 312 . The second shaft driving unit 320 may include a fourth housing 322 spaced apart from the third housing 321 . The second shaft driving unit 320 may include the second magnet 323 positioned in the third housing 321 . Accordingly, the arrangement direction of the plurality of first magnets 313 and the arrangement direction of the plurality of second magnets 323 may be formed to be perpendicular to each other.

The second shaft driving unit 320 may include a second coil 324 positioned in the fourth housing 322 and facing the second magnet 323 . The second shaft driving unit 320 may include a second guide part 325 for guiding the movement of the second housing 312 . In this case, the second housing 312 and the fourth housing 322 may be integrally formed. Accordingly, it may be described that the fourth housing 322 is omitted and the second coil 324 is disposed in the second housing 312 . That is, the second coil 324 may be disposed in the second housing 312 .

The third housing 321 may include a main body 3211 and a guide part 3212 . However, in the third housing 321 , at least one of the main body 3211 and the guide part 3212 may be omitted or changed. In addition, the main body 3211 and the guide part 3212 may be integrally formed.

The main body 3211 may accommodate the first housing 311 inside. The main body 3211 may be spaced apart from the first housing 311 . That is, a clearance space of the first housing 311 may be provided between the main body 3211 and the first housing 311 . The second magnet 323 may be positioned on the main body 3211 . The main body 3211 may have two spaced apart configurations and may be integrally coupled by the guide part 3212 .

The guide part 3212 may be coupled to the main body 3211 . The guide part 3212 may include a rail part on which the guide ball can move. The guide part 3212 may support the first housing 311 through the first guide part 315 . That is, the first housing 311 cannot move toward the guide part 3212 . The first guide part 315 may move along the rail part of the guide part 3212 . That is, the movement of the first housing 311 may be guided by the guide part 3212 .

The fourth housing 322 may be positioned to be spaced apart from the third housing 321 . The second coil 324 may be positioned in the fourth housing 422 . The fourth housing 322 may be coupled to the second housing 312 . The fourth housing 322 may be integrally formed with the second housing 312 .

The fourth housing 322 may include a main body 3221 and a cover part 3222 . In the fourth housing 322 , at least one of the main body 3221 and the cover part 3222 may be omitted or modified. In addition, the main body 3221 and the cover part 3222 may be integrally formed.

The second coil 324 may be positioned on the main body 3221 . The main body 3221 may be integrally formed with the second housing 312 . The main body 3221 may be spaced apart from the third housing 321 .

The cover part 3222 may be coupled to the upper surface of the main body 3221 . The cover part 3222 may be coupled to the main body 3221 by a separate coupling member. The cover part 3222 may include a rail part on which the guide ball can move. The cover part 3222 may support the third housing 321 through the second guide part 325 . That is, the third housing 321 cannot move toward the cover part 3222 . The second guide part 325 may move along the rail part of the cover part 3222 . That is, the movement of the third housing 321 may be guided by the cover part 3222 .

The second coil 324 may be provided in two pairs by forming a pair of two coils. In this case, the second magnet 323 may be positioned between the two coils forming a pair. Two of the second magnets 323 may be provided, and one of the second magnets 323 may be located in each of the two pairs of coils. The second coil 324 may be electrically connected to the substrate 330 . The second coil 324 may be coupled to the first coil coupling part 331 and the fourth coil coupling part 334 of the substrate 330 .

Two of the second guide parts 325 may be provided, one on each of one side and the other side of the third housing 321 . The second guide part 325 may include two guide balls and a guide plate rotatably accommodating the two guide balls. Three holes having a shape corresponding to the diameter of the guide ball may be formed in the guide plate. A guide ball can be accommodated in two of the three holes.

The second sensor 326 may detect the second sensing magnet 327 . The second sensor 326 may be, for example, a Hall sensor. The second sensor 326 may detect a magnetic force of the second sensing magnet 327 . The second sensor 326 may detect the position and/or movement of the third housing 321 to which the second sensing magnet 327 is fixed by detecting the second sensing magnet 327 . The second sensor 326 may be located in the fourth housing 322 . The second sensor 326 may be disposed to face the second sensing magnet 327 . The second sensor 326 may be electrically connected to the substrate 330 . The second sensor 326 may be coupled to the first sensor coupling unit 335 .

The second sensing magnet 327 may be located in the third housing 321 . The second sensing magnet 327 may be fixed to a lower portion of the third housing 321 . The second sensing magnet 327 may be fixed to the inner surface of the third housing 321 as shown in FIG. 17 . The second sensing magnet 327 may face the second sensor 326 . The second sensing magnet 327 may be disposed so as not to affect the electromagnetic interaction between the first magnet 313 and the first coil 314 . The second sensing magnet 317 may be disposed so as not to affect the electromagnetic interaction between the second magnet 323 and the second coil 324 .

The sensor accommodating part 328 may be formed in the fourth housing 322 . Alternatively, the sensor accommodating part 328 may be formed in the second housing 312 . The sensor accommodating part 328 may accommodate the second sensor 326 . At least a portion of the sensor accommodating part 328 may have a shape corresponding to that of the second sensor 326 .

The substrate 330 may electrically connect the optical output module to an external component. The substrate 330 may be, for example, a flexible printed circuit board (FPCB). The substrate 330 may be electrically connected to the coils 314 and 324 and the sensors 316 and 326 of the light output module.

The substrate 330 includes a first coil coupling part 331 , a second coil coupling part 332 , a third coil coupling part 333 , a fourth coil coupling part 334 , and a first sensor coupling part 335 . ), a second sensor coupling part 336 and an extension part 337 may be included. However, in the substrate 330 , the first coil coupling part 331 , the second coil coupling part 332 , the third coil coupling part 333 , the fourth coil coupling part 334 , and the Any one or more of the first sensor coupling part 335 , the second sensor coupling part 336 , and the extension part 337 may be omitted or modified. The substrate 330 may be integrally formed. However, the present invention is not limited thereto.

The first and fourth coil coupling parts 331 and 334 may be located on a lower surface of the fourth housing 322 . The first and fourth coil coupling parts 331 and 334 may be coupled to the second coil 324 . The first and fourth coil coupling units 331 and 334 may supply power to the second coil 324 .

The second and third coil coupling portions 332 and 333 may be bent and extended from the first and fourth coil coupling portions 331 and 334 . The second and third coil coupling parts 332 and 333 may connect the first coil coupling part 331 and the fourth coil coupling part 334 spaced apart from each other. The second and third coil coupling parts 332 and 333 may be located on side surfaces of the fourth housing 322 . The second and third coil coupling parts 332 and 333 may be coupled to the first coil 314 . The second and third coil coupling units 332 and 333 may supply power to the first coil 314 .

The first sensor coupling part 335 may be bent upward from the fourth coil coupling part 334 to extend. The first sensor coupling part 335 may be located in the sensor receiving part 328 formed in the fourth housing 322 . The first sensor coupling unit 335 may be coupled to the second sensor 326 . The second sensor 326 may be mounted on the first sensor coupling unit 335 .

The second sensor coupling part 336 may be bent a plurality of times from the fourth coil coupling part 334 to extend. The second sensor coupling unit 335 may be coupled to the first sensor 326 . The first sensor 326 may be mounted on the second sensor coupling unit 335 .

In the above, even though it has been described that all components constituting the embodiment of the present invention are combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as 'include', 'comprise', or 'have' described above mean that the corresponding component may be inherent, unless otherwise stated, so that other components are excluded. Rather, it should be construed as being able to include other components further. All terms including technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (10)

case;
a light output module partially exposed from the outer surface of the case and irradiating light to an area to be irradiated; and
and a light receiving module disposed to be spaced apart from the light output module on the outer surface of the case and sensing light reflected from the irradiated area,
The optical output module,
a lens unit including a first lens unit, a second lens unit located below the first lens unit, and a third lens unit located below the second lens unit;
an actuator for moving the second lens unit; and
and a light source disposed below the third lens unit,
LiDAR (Light Detection And Ranging) in which an adjustment hole for focusing adjustment is formed by exposing the second lens unit to the outside in an area of the side surface of the case that overlaps the second lens unit in the horizontal direction.
The method of claim 1,
The actuator is
a first housing coupled to the second lens unit and having a first magnet disposed on an outer circumferential surface;
a second housing in which a first coil is disposed in a region facing the first magnet from the outside of the first housing, and a second magnet is disposed on an outer peripheral surface spaced apart from the first coil; and
A lidar spaced apart from the second housing and having a second coil disposed in an area facing the second magnet.
The method of claim 1,
The lidar further comprising a light guide protruding from the peripheral region where the light receiving module is exposed among the outer surface of the case.
4. The method of claim 3,
The light guide is provided in plurality to face each other,
The surfaces of the plurality of light guides facing each other are a line including a vertical surface vertically formed from the outer surface of the case, and an inclined surface formed to be inclined outwardly from an end of the vertical surface.
According to claim 1,
A diameter of the second lens part is smaller than a diameter of the first lens part and a diameter larger than a diameter of the third lens part.
The method of claim 1,
A protrusion height of a lens exposed to the outside of the light receiving module is higher than a protrusion height of a lens exposed to the outside of the light output module.
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