KR20180113755A - Lens driving unit, light emitting module, LiDAR and driving method of LiDAR - Google Patents

Abstract

The present invention relates to a lens driving device, a light emitting module, and a method of driving the light emitting diode and the light emitting diode. A lens driving apparatus according to one aspect includes a first lens unit and a second lens unit; A first holder coupled to the first lens unit; A second holder coupled to the second lens unit; A housing substrate disposed between the first holder portion and the second holder portion; A first magnet disposed in the first holder portion; And a second magnet disposed on the second holder, wherein the housing substrate includes an upper surface and a lower surface, a first coil disposed on the upper surface of the housing substrate, a first coil facing the first magnet, And a second coil facing the second magnet.

Description

[0001] The present invention relates to a lens driving unit, a light emitting module, a driving method of the same,

The present embodiment relates to a lens driving device, a light emitting module, and a driving method of the driver and the driver.

Light Detection And Ranging (LiDAR) can detect light toward a target and detect distances, directions, velocities, temperatures, material distributions and concentration characteristics to objects.

Lida has been used for weather observation and distance measurement, but recently it has been studied for autonomous driving and unmanned ballet parking.

Rida includes an optical output module for emitting light to an object and a light receiving module for sensing light reflected from the object. However, the conventional optical output module has a problem 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 an optical output module, the amount of displacement of the angle of view is small. Also, in this case, it is also vulnerable to impact, which is a problem.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a lens driving device, a light emitting module, and a lidar that can realize a wide field of view (FOV) while reducing a lens size.

The lens driving apparatus according to the present embodiment includes a first lens unit and a second lens unit; A first holder coupled to the first lens unit; A second holder coupled to the second lens unit; A housing substrate disposed between the first holder portion and the second holder portion; A first magnet disposed in the first holder portion; And a second magnet disposed on the second holder, wherein the housing substrate includes an upper surface and a lower surface, a first coil disposed on the upper surface of the housing substrate, a first coil facing the first magnet, And a second coil facing the second magnet.

The optical output module according to the present embodiment includes a first lens unit; A first holder coupled to the first lens unit; A second lens unit disposed above the first holder unit; A second holder coupled to the second lens unit; A housing substrate disposed between the first holder portion and the second holder portion; A first magnet disposed in the first holder portion; A second magnet disposed in the second holder portion; A third lens unit disposed above the second lens unit; And a substrate disposed on the lower side of the first lens unit and having a light source disposed on an upper surface thereof, wherein the housing substrate includes an upper surface and a lower surface, and is disposed on the upper surface of the housing substrate, And a second coil disposed on the lower surface of the housing substrate and facing the second magnet.

The light emitting module according to the present embodiment includes an optical output module for irradiating light to the irradiated region and a light receiving module for irradiating light from the optical output module and sensing light reflected from the irradiated region, A first lens unit; A first holder coupled to the first lens unit; A second lens unit disposed above the first holder unit; A second holder coupled to the second lens unit; A housing substrate disposed between the first holder portion and the second holder portion; A first magnet disposed in the first holder portion; A second magnet disposed in the second holder portion; A third lens unit disposed above the second lens unit; And a substrate disposed on the lower side of the first lens unit and having a light source disposed on an upper surface thereof, wherein the housing substrate includes an upper surface and a lower surface, and is disposed on the upper surface of the housing substrate, And a second coil disposed on the lower surface of the housing substrate, the second coil facing the second magnet.

The driving method of the present invention includes a first lens unit and a second lens unit disposed on an upper side of a light source, wherein the first holder, in which the first lens unit is disposed, ; Moving a second holder in which the second lens unit is disposed in a second direction; Moving the first holder in a third direction opposite to the first direction; And moving the second lens unit in a fourth direction opposite to the second direction.

There is an advantage that the scanning of the light source can be realized through the present embodiment.

Further, the overall length of the lens driving device can be reduced as the lens size is reduced, a wide angle of view can be realized, and an angle of view of the X axis / Y axis can be adjusted.

In addition, since the first holder portion and the second holder portion can be individually moved through separate driving units, there is an excellent effect in terms of stability.

1 is a perspective view of a ladder according to an embodiment of the present invention;
2 is an exploded perspective view of a ladder according to an embodiment of the present invention;
3 is a perspective view showing an optical output module according to an embodiment of the present invention;
4 is a cross-sectional view of an optical output module according to an embodiment of the present invention;
5 is a perspective view illustrating an actuator according to an embodiment of the present invention.
6 is a cross-sectional perspective view of an actuator according to an embodiment of the present invention.
7 is an exploded perspective view of an actuator according to an embodiment of the present invention.
8 is a cross-sectional view taken along line X1 - X2 of FIG. 6;
9 is a cross-sectional view taken along line Y1-Y2 in Fig.
10 is a reference diagram for explaining the operation of the lens driving apparatus according to the embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the components in the drawings, the same components are denoted by the same reference numerals whenever possible, even if they are displayed on other drawings.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected, coupled, or connected to 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 as a 'second driving unit' Another one may be referred to as a 'third driving part', and the other one may be referred to as a 'fourth driving part'. 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. 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 ladder according to the present embodiment will be described.

Light Detection And Ranging (LiDAR) according to the present embodiment can detect the distance, direction, velocity, temperature, material distribution and concentration characteristic to an object by irradiating light toward a target.

Lida can be used for weather observation and distance measurement. Also, Lida can be used for autonomous driving and unattended valet parking.

The ladder according to the present embodiment may include an optical output module and a light receiving module. Rida may include a light output module for irradiating light to the irradiated region. The light emitting module may include a light receiving module that is irradiated from the light output module and senses light reflected from the irradiated region.

The light receiving module can sense light irradiated from the optical output module and reflected at the irradiated area. The light receiving module may include a substrate 410, a light receiving sensor (not shown), a heat radiating member 430, and a lens driving device. The light receiving module may be manufactured by replacing the light source 420 in the light output module with a light receiving sensor (not shown). Further, in the light receiving module, the heat radiation member 430 may be omitted. Description of the substrate 410, the heat dissipating member 430 and the lens driving apparatus of the light receiving module will be given in the following description of the substrate 410, the heat dissipating member 430 and the lens driving apparatus of the optical output module Can be applied. The light receiving sensor can sense the light irradiated from the optical output module and reflected at the irradiated area. The light receiving sensor can detect infrared light as an example. However, it is not limited thereto.

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

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

FIG. 1 is a perspective view of a ladder according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a ladder according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a ladder 10 according to an embodiment of the present invention is formed in an outer shape by a case 20. The case 20 is formed in a substantially rectangular parallelepiped shape, and a space for accommodating electronic components is formed in the inside of the case 20 by driving the ladder 10. A separate cover (not shown) may be coupled to the lower surface of the case 20. Therefore, the inner space of the case 20 can be shielded by the coupling between the cover and the case 20. Alternatively, it is a matter of course that the case 20 and the cover are integrally formed so that the space 25 can be formed therein.

On the outer surface of the case 20, the optical output module 30 and a part of the optical receiving module 50 are respectively exposed to the outside. In other words, a part of the optical output module 30 and a part of the light receiving module 50 may be exposed to the outside through a hole formed in the case 20. The exposed region may be a lens through which light emitted from the optical output module 30 is emitted or incident. Therefore, the lenses may have a shape in which the surface thereof protrudes from the outer surface of the case 20.

A light guide (60) protrudes from the outer surface of the case (20) adjacent to the light receiving module (50) in a region where the light receiving module (50) is exposed. In detail, a hole for exposing the light receiving module 50 to the outside may be formed in the case 20. The light guide 60 is disposed adjacent to the outer peripheral side of the hole. For example, when the light receiving module 50 is exposed on the upper surface of the case 20, the light guide 60 may protrude upward from the upper surface of the case 20.

The light guide 60 may be a plurality of mutually opposed guides. At this time, mutually facing surfaces of the light guides 60 may be defined as inner surfaces of the light guides 60. A vertical surface 62 formed vertically from the upper surface of the case 20 and an inclined surface 61 formed to be inclined outward from the end of the vertical surface 62 are formed on the inner surface of the light guide 60 . Therefore, the inner surface of the plurality of light guides 60 adjacent to each other can be further distanced from the straight line. For example, the inclined surface 61 may form 1 to 10 degrees with respect to an imaginary line perpendicular to the upper surface of the case 20.

The light guide 60 reflects the light irradiated from the optical output module 30 in the irradiated area and is guided to the light receiving module 50. It can be understood that the reflected light is guided to be incident on the first light receiving lens 52 of the light receiving module 50. The light guide 60 is disposed between the light receiving module 50 and the light output module 30 so that the light emitted from the light output module 30 is transmitted to the light receiving module 30 And can be prevented from being directly received.

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

Referring to FIGS. 2 and 3, the Lada 10 includes the optical output module 30 and the optical receiving module 50.

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

At least a part of the light receiving lenses (52, 54) can be accommodated in the light guide (60). The center of the light receiving lenses 52 and 54 may be exposed to the outside. The center of the light receiving lenses 52 and 54 may be exposed upward.

The light receiving lenses 52 and 54 may be disposed on the light receiving substrate 56. The second light receiving lens 54 of the light receiving lenses 52 and 54 is electrically connected to the light receiving substrate 56 so that a signal through the light incident from the light receiving lenses 52 and 54 And can be input to the light receiving substrate 56.

The first light-receiving lens 52 may have a curved surface whose central portion protrudes upward. Therefore, the light reflected from the irradiated region can be easily incident on the first light receiving lens 52. The second light receiving lens 54 may be a condensing lens. Further, the light receiving lenses 52 and 54 may have a shape protruding to the outside relative to the first lens unit 110, which will be described later. That is, the regions of the light receiving lenses 52 and 54 exposed to the outside are formed such that the length in the vertical direction is higher than that of the first lens unit 130.

A separate substrate 58 may be further 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 of each other. The light receiving substrate 56 and the separate substrate 58 may be electrically connected to each other by disposing a separate connecting substrate 57 on both sides of the light receiving substrate 56 and the separate substrate 58. A main substrate 90 is disposed below the separate substrate 58 so that the light receiving module 50 and the optical output module 30 can be electrically connected. The main board 90 may transmit a control command required for driving the ladder 10 or provide power to the modules 30 and 50.

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

FIG. 3 is a perspective view illustrating an optical output module according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of an optical output module according to an embodiment of the present invention, FIG. 5 is a perspective view showing an actuator according to an embodiment of the present invention 6 is an exploded perspective view of an actuator according to an embodiment of the present invention, FIG. 8 is a cross-sectional view taken along line X1 - X2 in FIG. 6, and FIG. 9 is a cross- 6 is a cross-sectional view taken along line Y1-Y2 in Fig.

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

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 can supply a current necessary for driving the light source 420. The light source 420 and the first heat sink 431 may be coupled to the upper surface of the substrate 410. The second heat sink 432 may be coupled to the lower surface of the substrate 410. The substrate 410 may be, for example, a printed circuit board (PCB). However, it 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 positioned below the lens unit 100. The light source 420 may be positioned below the first lens unit 110. 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 can receive power from the substrate 410. The light source 420 may be a laser diode. The light source 420 can irradiate infrared light as an example. However, it is not limited thereto.

The radiation member 430 may be in contact with the light source 420 and / or the substrate 410. The heat dissipation member 430 may emit heat generated from the light source 420. That is, the heat dissipation member 430 can prevent the light source 420 and / or the substrate 410 from being damaged by the 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 sink 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 sink 431 may receive at least a part of the light source 420. The first heat sink 431 may have a shape corresponding to the light source 420 in a part thereof. The first heat radiating plate 431 may include a disc-shaped body, and protrusions protruding upward from the body and accommodating the light sources 420 inward. A thread may be formed on the outer peripheral surface of the projection. The third lens barrel 133 may be coupled to the thread of the projection.

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 partially. The second heat radiating plate 432 may be coupled to the first heat radiating plate 431 by a coupling member passing through the substrate 410. At this time, the coupling member may be a bolt or a screw. Alternatively, the second heat sink 432 may be coupled to the holder unit 200 by a coupling member passing through 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 apparatus according to the present embodiment, at least one 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 with the light source 420 mounted on the substrate 410. With this structure, the light emitted from the light source 420 can be emitted to the outside through the lens unit 100. The lens unit 100 may change the path of at least part 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 be composed of a total of six lenses. The lens unit 100 may include first to sixth lenses 111, 112, 121, 122, 131, and 132. At this time, at least one of the first to sixth lenses 111, 112, 121, 122, 131, and 132 may be an aspherical lens. Alternatively, the first to sixth lenses 111, 112, 121, 122, 131, and 132 may be aspherical lenses.

The 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 can be ensured as the actuator 300 moves at least a part of the lens unit 100.

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

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

 The third lens unit 130, the second lens unit 120, and the first lens unit 110 may be sequentially arranged from the upper side to the lower side. At this time, the light source 420 may be positioned below the first lens unit 110. However, the third lens unit 130, the second lens unit 120, and the first lens unit 110 may be arranged in a different order.

At least a part of the third lens unit 130 may be accommodated in the holder unit 200. The central portion of the third lens unit 130 may be exposed to the outside. The center of the third lens unit 130 may be exposed upward. The peripheral portion of the third lens unit 130 may be received by the holder unit 200. [ The peripheral portion of the upper surface of the third lens unit 130 may be pressed downward by the cover 220 and fixed.

The third lens unit 130 may include a fifth lens 131, a sixth lens 132, and a third lens barrel 133. 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 at least partially exposed upward. The third lens unit 130 may include the sixth lens 132 positioned below the fifth lens 131.

At least a part of the fifth lens 131 may be received in the holder unit 200. At least a part of the fifth lens 131 may be exposed upward. The center of the fifth lens 131 may be exposed to the outside. The center of the fifth lens 131 may be exposed upward. The peripheral portion of the fifth lens 131 can be received by the holder unit 200. [ The peripheral portion of the upper surface of the fifth lens 131 may be pressed downward by the cover 220 to be fixed. The fifth lens 131 may have the largest diameter as compared with the first through fourth lenses 111, 112, 121, and 122.

The sixth lens 132 may be positioned below the fifth lens 131. The sixth lens 132 may be positioned above the third lens 121. The diameter of the sixth lens 132 may be smaller than the diameter of the fifth lens 131 and larger than the diameter of the third lens 121. The sixth lens 132 may be disposed such that the optical axis of the fifth lens 131 is aligned with the optical axis of the fifth lens 131.

The third lens barrel 133 may receive at least a part of the fifth lens 131. The third lens barrel 133 may receive at least a part of the fifth lens 131. The third lens barrel 133 may support the outer circumferential surface of the fifth lens 131. The third lens barrel 133 may support the outer circumferential surface of the fifth lens 131. The third lens barrel 133 may be accommodated in the holder unit 200. The third lens barrel 133 may be received inside the cover 220. At least a part of the third lens barrel 133 may be seated in the holder 210. At least a part of the lower surface of the third lens barrel 133 may be supported by the holder 210. At least a part of the third lens barrel 133 may have a shape corresponding to the holder 210.

The second lens unit 120 may be coupled to the actuator 300. The second lens unit 120 can 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. At this time, the movement of the second lens unit 120 in the optical axis direction of the lens unit 100 may be restricted. The upper end of the second lens unit 120 may contact the third lens unit 130 directly. The upper end of the second lens unit 120 may support the lower end of the third lens unit 130. The lower end of the second lens unit 120 may be in direct contact with the first lens unit 110. The lower end of the second lens unit 120 may be supported by the first lens unit 110.

The second lens unit 120 can be moved in a first axis direction perpendicular to the optical axis of the lens unit 100. The second lens unit 120 can move in a second axis direction perpendicular to the optical axis of the lens unit 100 and different from the first axis direction. At this time, the first axis direction and the second axis direction may be orthogonal. 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 占 퐉 to 92 占 퐉 in the second axis direction. In this case, the angle of view of the lens unit 100 may be 135 to 145 degrees.

Meanwhile, an adjustment hole 24 (see 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 of the side surface of the case 20 which overlaps with the second lens unit 120 in the horizontal direction to expose the second lens unit 120 to the outside. Accordingly, the operator can adjust the position of the second lens unit 120 by inserting a separate tool into the adjustment hole 24. [

The second lens unit 120 may include a third lens 121, a fourth lens 122, and a second lens barrel 123. 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 located below the sixth lens 132. The second lens unit 120 may include the fourth lens 122 positioned below the third lens 121. Here, the third lens 121 and the fourth lens 122 may be referred to as a 'driving lens'.

The third lens 121 may be positioned below the sixth lens 132. 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 can be moved by the actuator 300. The third lens 121 may be disposed such that the optical axis thereof coincides with the fourth lens 122. The diameter of the third lens 121 may correspond to the 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 can be moved by the actuator 300.

The second lens barrel 123 may accommodate at least a part of the third lens 121. The second lens barrel 123 may accommodate at least a part of the fourth lens 122. The second lens barrel 123 may support the outer circumferential surface of the third lens 121. The second lens barrel 123 may support an outer circumferential 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 can be moved by the actuator 300. At least a part of the lower surface of the second lens barrel 123 may be supported by the third lens barrel 133. In detail, the second lens barrel 123 may be supported by the first holder 1010 of the actuator 300.

The first lens unit 110 may be coupled to the actuator 300. The first lens unit 110 may be moved by the actuator 300. The first lens unit 110 can move in a direction perpendicular to the optical axis of the lens unit 100. At this time, the movement of the first lens unit 110 in the direction of the optical axis of the lens unit 100 can be restricted. The first lens unit 110 may be positioned below the second lens unit 120. The first lens unit 110 may be positioned above the light source 420. The inner circumferential surface of the first lens unit 110 may contact the outer circumferential surface of the first heat sink 431. The inner circumferential surface of the first lens unit 110 may be screwed to the outer circumferential surface of the first heat sink 431.

The first lens unit 110 may include the first lens 111, the second lens 112, and the first lens barrel 113. 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 positioned below the fourth lens 122. The first lens unit 110 may include the second lens 112 positioned below the first lens 111. The first lens unit 110 includes the first lens barrel 113 that receives the first lens 111 and the second lens 112 and is screwed to the inner circumferential surface of the actuator 300 .

The first lens 111 may be positioned below the fourth lens 122. The first lens 111 may be positioned above the second lens 112. The first lens 111 may be supported by the first lens barrel 113. The first lens 111 may be accommodated in the actuator 300. The first lens 111 may be disposed such that the optical axis of the first lens 111 and that of the second lens 112 coincide with each other. The first lens 111 may be a lens for focusing. In this case, the first lens 111 may be referred to as a 'focusing lens'.

The second lens 112 may be positioned below the first lens 111. The second lens 112 may be positioned above the light source 420. The second lens 122 may be supported by the first lens barrel 113. The second lens 122 may be accommodated in the actuator 300. The second lens 112 may be arranged so that the optical axis of the first lens 111 coincides with that of the first lens 111. The second lens 112 may be a lens for the collimating. That is, the second lens 112 can generate parallel light through the light emitted from the light source 420. In this case, the second lens 112 may be referred to as a 'collimating lens'.

The first lens barrel 113 can receive the first lens 111. The first lens barrel 113 can receive the second lens 112. The first lens barrel 113 may support the outer circumferential 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 screwed to the inner circumferential surface of the actuator 300. The first lens barrel 113 may be screwed to the outer circumferential surface of the first heat sink 431. In detail, the first lens barrel 113 can be supported by a second holder 1030, which will be described later.

The holder unit 200 can accommodate at least a part of the lens unit 100. The holder unit 200 may fix the third lens unit 130. The holder unit 200 can accommodate the second lens unit 120 and the first lens unit 110 movably therein. That is, the holder unit 200 can hold the third lens unit 130 and move the second lens unit 120 and the first lens unit 110 movably. The holder unit 200 may internally accommodate the second lens unit 120 or the actuator 300 that moves the first lens unit 110.

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. Further, the holder 210 and the cover 220 may be integrally formed. The holder 210 and the cover 220 may be integrally injection-molded to support the lens unit 100 when the case 20 is manufactured.

The holder unit 200 may include at least a part of the lens unit 100 and the holder 210 for accommodating the actuator 300 therein. The holder unit 200 may include the cover 220 that presses the peripheral portion of the upper surface of the fifth lens 131 downward and is screwed to the outer circumferential surface of the holder 210. The cover 220 may be formed such that the outer circumferential side of the fifth lens 131 protrudes upward from the upper surface of the case 20.

The holder 210 can accommodate at least a part of the lens unit 100 therein. The holder 210 can accommodate the light source 420 therein. The holder 210 may be positioned above the substrate 410. The holder 210 may be positioned on the upper surface of the first heat sink 431. The holder 210 may be coupled to the heat dissipating 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 can accommodate the actuator 300 therein. The holder 210 may include an actuator receiving groove having a shape corresponding to the shape of the actuator 300 of a rectangular parallelepiped. At this time, the actuator receiving groove may be formed as an actuator receiving hole. The holder 210 may include a lens barrel receiving hole having a corresponding shape to receive the third lens barrel 133, which is a cylindrical shape having the outermost shape. At this time, the lens barrel receiving hole may be formed as a lens barrel receiving groove. The holder 210 can accommodate the actuator 300 having a rectangular parallelepiped shape and accommodating the lens unit 100 in which the outermost barrel is cylindrical. The holder 210 may have a circular shape at the lower end and the upper end. The holder 210 may have a rectangular-shaped groove in its cross-section.

The cover 220 may press the peripheral portion of the upper surface of the fifth lens 131 downward. The cover 220 may be screwed to the outer circumferential surface of the holder 210. The cover 220 may be coupled to an upper portion of the holder 210. The holder 210 can accommodate the third lens unit 130 therein. The cover 220 may include a hollow hole exposing a part of the upper surface of the fifth lens 131. The cover 220 may be formed as a lower opening. The side surface of the cover 220 may be coupled to the side surface of the holder 210. The cover 220 and the holder 210 may be coupled to each other to form a space therein. 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 a 'voice coil motor (VCM)'. The actuator 300 can move the lens unit 100 coupled to the actuator 300 through an electromagnetic interaction.

The actuator 300 may move the second lens unit 120 or the first lens unit 110. The actuator 300 may move the second lens unit 120 or the first lens unit 110 in a direction perpendicular to the optical axis of the lens unit 100. At this time, the movement of the second lens unit 120 and the first lens unit 110 in the direction of the optical axis can be restricted. Here, the 'optical axis' may be referred to as 'vertical direction', 'vertical direction', and 'Z-axis direction'. In addition, the 'direction perpendicular to the optical axis' may be referred to as 'front / back / left / right direction', 'horizontal direction' and 'X axis / Y axis direction'. The actuator 300 may move the second lens unit 120 in the first axial direction and the first lens unit 110 in the second axial direction. At this time, the first axis direction and the second axis direction may be inclined. Further, the first axis direction and the second axis direction may be orthogonal. At this time, the first axis may be referred to as an 'X axis' and the second axis as a 'Y axis'. That is, the actuator 300 can move the second lens unit 120 in the X-axis direction and the first lens unit 110 in the Y-axis direction or more. At this time, the second lens unit 120 and the first lens unit 110 may be changed in direction. That is, the first lens unit 110 may be moved in the X-axis direction, and the second lens unit 120 may be moved in the Y-axis direction.

The outer shape of the actuator 300 is formed by the housing 1100. The actuator 300 may include a first driving unit 1001 and a second driving unit 1002 coupled to the housing 1100 and substrates 331 and 333. However, in the actuator 300, at least one of the first driving unit 1001, the second driving unit 1002, and the substrate 330 may be omitted or changed.

A cover 390 may be coupled to the upper and lower sides of the housing 1100. At this time, the cover 390 may be divided into a first cover coupled to the upper side of the housing 1100 and a second cover coupled to the lower side of the housing 1100. The first cover may have a hole for exposing the second lens unit 120 upward.

The first driving unit 1001 may include a first holder 1010, a first magnet 1012, a first coil 1014, and a first guide unit 1015. In the first drive unit 1001, at least one of the first holder 1010, the first magnet 1012, the first coil 1014, and the first guide unit 1015 May be omitted or changed.

7, the actuator 300 can be partitioned upward and downward by the housing substrate 350. [ The first driving unit 1001 may be disposed on the upper surface of the housing substrate 350 and the second driving unit 1002 may be disposed on the lower surface of the housing substrate 350. A hole 351 for exposing the first lens unit 1100 through the upper and lower surfaces may be formed in a region of the housing substrate 350 corresponding to the optical axis direction.

A plurality of electronic components for driving the actuators 300 are mounted on the housing substrate 350. The housing substrate 350 is disposed inside the housing 1100. The housing substrate 350 may be formed integrally with the housing 1100.

The housing substrate 350 is electrically coupled to the first coil 1014, the second coil 1034, the first holder unit 1010, and the second holder unit 1030. The first coil 1014, the second coil 1034, the first holder 1010, and the second holder 1030 are coupled to the upper and lower surfaces of the housing substrate 350, The seat portion can be formed. The seating part has a first coil 1014, a second coil 1034, a first holder part 1010, a second holder part 1030 As shown in Fig. For example, a coil seating part 353 for seating the first coil 1014 may be formed on the upper surface of the housing substrate 350 in correspondence with the position and the cross-sectional shape of the first coil 1014 .

Two of the first coils 1014 may be disposed on the upper surface of the housing substrate 350. In the present embodiment, two of the first coils 1014 are disposed, but only one can be disposed according to the design. More specifically, the first coil 1014 is disposed on the upper surface of the housing substrate 350, and the first holder 1010 is disposed on the housing substrate 350 on which the first coil 1014 is disposed Can be combined. To this end, a first coil coupling portion 1111 for disposing the first coil 1014 may be formed on the housing substrate 350. The plurality of first coils 1014 may be disposed to face each other on the upper surface of the housing substrate 350. The first coil 1040 may be disposed on both sides of the second lens unit 120. The first coil 1014 may be electrically connected to the substrate 330.

The first guide part 1015 is formed between the first holder part 1010 and the upper surface of the housing substrate 350. The first guide portion 1015 may include a first guide ball 1016 and a first guide groove 1017 through which the first guide ball 1016 slides. The first guide ball 1016 may be coupled to the lower surface of the first holder unit 1010 and the first guide ball 1016 may be coupled to the first guide ball 1016 on the upper surface of the housing substrate 350, A guide groove 1017 can be formed. The first guide part 1015 may be disposed between the first holder part 1010 and the housing substrate 350 in plural.

The first guide part 1015 may be formed adjacent to the center of the first holder part 1010. At this time, the first guide part 1015 may be positioned between the area of the first magnet 1012 and the center of the first guide part 1015 in the lower surface of the first holder part 1010 have. The first guide portions 1015 may be disposed on both sides of the center of the first holder portion 1010. The first guide portion 1015 may be disposed on the lower surface of the first holder 1010 and may be disposed on the end of the housing substrate 350 so as to be adjacent to the housing 1100. That is, the first guide part 1015 may be disposed between the first coil 1014 and the housing 1100.

The first holder 1010 has a first coupling hole 1011 for receiving the second lens unit 120. The first coupling hole 1011 may be formed at the center of the first holder 1010 so as to surround the outer circumferential surface of the second lens barrel 123 of the second lens unit 120. The second lens unit 120 and the first holder unit 1010 may be screwed together and may be further combined with an epoxy or a thermosetting adhesive after screwing. Accordingly, it can be understood that the second lens unit 120 is disposed at the center of the first holder unit 1010, and the first magnet 1012 is coupled to both ends of the first lens unit 1010.

More specifically, the first holder 1010 includes a holder body 1010a on which the second lens unit 120 is fitted, and a second magnet 1010b disposed on both sides of the holder body 1010a, And a magnet coupling portion 1010b.

The second drive unit 1002 may include a second holder 1030, a second magnet 1032, a second coil 1034, and a second guide unit 1035. In the second drive unit 1002, at least one of the second holder 1030, the second magnet 1032, the second coil 1034, and the second guide unit 1035 May be omitted or changed.

Two of the second coils 1034 may be disposed on the lower surface of the housing substrate 350. More specifically, the second coil 1034 is disposed on the lower surface of the housing substrate 350, and the second holder 1030 is disposed on the housing substrate 350 on which the second coil 1034 is disposed Can be combined. To this end, a second coil coupling portion 1112 for the second coil 1034 may be formed on the housing substrate 350. The plurality of second coils 1034 may be disposed to face each other on a lower surface of the housing substrate 350. The second coil 1034 may be disposed on both sides of the first lens unit 110. At this time, the arranging direction of the plurality of second coils 1034 can be opposite to the arranging direction of the plurality of first coils 1014. The second coil 1034 may be electrically connected to the substrate 330.

The second guide part 1035 is formed between the second holder part 1030 and the lower surface of the housing substrate 350. The second guide portion 1035 may include a second guide ball 1036 and a second guide groove 1037 through which the second guide ball 1036 slides. The second guide ball 1036 may be coupled to the upper surface of the second holder 1030 and the second guide ball 1036 may be coupled to the second guide ball 1036, A groove 1037 can be formed. The second guide portion 1035 may be disposed in plurality between the second holder portion 1030 and the housing substrate 350.

The second guide part 1035 may be formed adjacent to the center of the second holder part 1030. The second guide portion 1035 may be positioned between the center of the second guide portion 1035 and the second magnet 1032 in the lower surface of the second holder portion 1030, have. The second guide portions 1035 may be disposed on both sides of the center of the second holder portion 1030. The second guide portion 1035 may be disposed on the lower surface of the second holder 1030 and may be disposed at the end of the housing substrate 350 so as to be adjacent to the housing 1100. That is, the second guide portion 1035 may be disposed between the second coil 1034 and the housing 1100.

The second holder portion 1030 is formed with a second coupling hole 1031 for receiving the first lens portion 110 therein. The second coupling hole 1031 may be formed at the center of the second holder 1030 and may be coupled to surround the outer peripheral surface of the third lens barrel 133 of the first lens unit 110. Accordingly, it can be understood that the first lens unit 110 is disposed at the center of the second holder 1030, and the second magnet 1032 is coupled to both ends of the second holder 1030.

More specifically, the second holder 1030 includes a holder body 1030a on which the first lens unit 110 is inserted, and a second magnet 1030a on both sides of the holder body 1030a, And a magnet coupling portion 1030b.

Meanwhile, the first holder 1010 and the second holder 1030 may be disposed so as to intersect each other, more specifically, be orthogonal to each other. That is, the first holder 1010 at which the first magnet 1012 is disposed at both ends and the second holder 1030 at which the second magnet 1032 is disposed at both ends, Can form mutual verticals. Therefore, the arrangement of the first coil 1014 and the second coil 1034 can also be perpendicular to each other. This is because the first driving unit 1001 moves the second lens unit 120 in the X axis direction and the second driving unit 1002 moves the first lens unit 110 in the Y axis direction . In other words, the first holder 1010 may be disposed in a first direction, and the second holder 1030 may be disposed in a second direction that intersects the first direction.

At this time, the first guide part 1015 is arranged in the second direction, and the first holder part 1010 can be driven in the second direction. In addition, the second guide portion 1035 is disposed in the first direction, and the second holder portion 1030 can be driven in the first direction.

In the present embodiment, the first holder 1010 is arranged long in the first direction and the first guide 1015 is arranged in the second direction. However, the present invention is not limited to this, 1010 and the first guide portion 1015 may be arranged in the same direction.

In addition, the second holder 1030 is arranged long in the second direction and the second guide 1035 is arranged in the first direction. However, the present invention is not limited to this, and the second holder 1030 And the second guide portion 1035 can be arranged in the same direction.

However, since the first holder 1010 and the second holder 1030 are driven in different directions, the first guide part 1015 and the second guide part 1035 are arranged in different directions . That is, the first guide part 1015 and the second guide part 1035 may be arranged in directions intersecting with each other.

A first substrate 331 is disposed between the first holder 1010 and the housing substrate 350. The first substrate 331 includes an upper surface and a lower surface, and may be electrically connected to the first coil 1014. That is, it can be understood that the first coil 1014 is electrically connected to the first coil 1014 on the top surface of the first substrate 331. The second coil 1034 may be disposed on the lower surface of the first substrate 332 and may be electrically connected to the first substrate 331. Meanwhile, the first substrate 331 may be formed integrally with the housing 1100.

On the other hand, a hole 332 is formed in the first substrate 331. The holes 332 are formed through upper and lower surfaces of the first substrate 332. The first guide part 1015 may be disposed between the hole 332 and the first coil 1014. The second guide portion 1035 may be disposed between the hole 332 and the second coil 1034. [

A second substrate 333 is disposed between the second holder 1030 and the housing substrate 350. The second substrate 333 may be electrically connected to the second coil 1034.

The operation of the lens driving apparatus according to the embodiment of the present invention will be described. First, the second lens unit 120 is driven by the electromagnetic interaction between the first magnet 1012 and the first coil 1014, Direction. The first lens unit 110 can be moved in the Y axis direction by an electromagnetic interaction between the second magnet 1032 and the second coil 1034. [ Accordingly, since the second lens unit 120 and the first lens unit 110 can be operated by individual driving, the overall length of the lens driving apparatus can be reduced as the lens size is reduced, and a wide angle of view can be realized And the angle of view of the X axis / Y axis can be adjusted.

In addition, since the second lens unit 120 and the first lens unit 110 are operated by separate driving, it is possible to drive the X-axis / Y-axis more stably.

10 is a reference diagram for explaining the operation of the lens driving apparatus according to the embodiment of the present invention.

Referring to FIG. 10, in this embodiment, the third lens unit 130 and the light source 420 are fixed to the substrate 410. However, the first lens unit 110 and the second lens unit 120 can move in the X-axis direction or the Y-axis direction with respect to the substrate 410, respectively.

Here, the movement of the second lens unit 120 is limited to the X-axis direction and the movement of the first lens unit 110 is limited to the Y-axis direction. However, the second lens unit 120 may be moved in the X- The first lens unit may move in the Y axis direction. Further, each of the lens units 110 and 120 may be movable in three or more axes directions.

The optical output module according to the present embodiment can irradiate light at a point indicated by start in Fig. Thereafter, the first driving unit 1001 moves the second lens unit 120 by a second distance L2 in a first direction parallel to the X axis (see A in Fig. 10). More specifically, when power is supplied to the first coil 1014, the first magnet 313 of the first holder unit 1010 performs an electromagnetic interaction with the first coil 1014, and the second lens unit The first holder unit 1010 in which the first holder unit 120 is disposed moves integrally in the first direction. The second holder 1030 is fixed.

Then, the second driving unit 1002 moves the first lens unit 110 by a first distance L1 in a second direction parallel to the Y-axis direction (B). More specifically, when power is supplied to the second coil 1034, the second magnet 1032 located in the second holder 1030 performs electromagnetic interaction with the second coil 1034, The second holder part 1030 in which the first holder part 110 is disposed moves integrally in the second direction.

Then, the first driving unit 1001 moves the second lens unit 120 by a second distance L2 in a third direction opposite to the first direction (C). In this case also, when power is supplied to the first coil 1014, the first holder portion 1010 in which the second lens portion 120 is disposed moves integrally.

Then, the second driving unit 1002 moves the first lens unit 110 by the first distance L1 in the second direction (D). Also in this case, when power is supplied to the second coil 1034, the second holder portion 1030 including the first lens portion 120 moves integrally in the second direction.

The first driving unit 1001 and the second driving unit 1002 alternately operate to move the second lens unit 120 or the first lens unit 110 as described above (see E, F, G).

Thereafter, the second driving unit 1002 is moved by three times the first distance L1 in the fourth direction opposite to the second direction (H). Thus, the first lens unit 110 arrives at the position indicated by End / Start and completes one cycle. At this time, the driving cycle of the first lens unit 110 may be performed at a cycle of 20 Hz. On the other hand, the first distance L1 shown in Fig. 7 may be 0.6 mm. That is, the Y axis displacement amount of the optical output module according to the present embodiment may be 0.6 mm. Also, the second distance L2 may be 4 mm. That is, the X axis shift amount of the optical output module according to the present embodiment may be 4 mm.

However, the movement of the first lens unit 110 and the second lens unit 120 described above is illustrative and can be variously modified. In addition, movement of any one of the first lens unit 110 and the second lens unit 120 does not affect the other lens unit, so that each lens unit can be individually and independently driven.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. It is to be understood that the terms such as 'include', 'comprising', or 'having', as used herein, mean that a component can be implied unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (12)

A first lens unit and a second lens unit;
A first holder coupled to the first lens unit;
A second holder coupled to the second lens unit;
A housing substrate disposed between the first holder portion and the second holder portion;
A first magnet disposed in the first holder portion; And
And a second magnet disposed in the second holder portion,
Wherein the housing substrate includes an upper surface and a lower surface,
A first coil disposed on the upper surface of the housing substrate and facing the first magnet,
And a second coil disposed on the lower surface and facing the second magnet.
The method according to claim 1,
Wherein the first holder portion is disposed in a first direction,
And the second holder is disposed in a second direction that intersects the first direction.
The method according to claim 1,
Wherein the housing substrate comprises a hole,
And a first guide portion is disposed between the hole and the first coil.
The method of claim 3,
And a second guide portion is disposed between the hole and the second coil.
The method according to claim 1,
A first guide ball is provided on a lower surface of the first holder,
And a first guide groove for sliding the first guide ball is disposed on an upper surface of the housing substrate.
The method according to claim 1,
A second guide ball is provided on an upper surface of the second holder,
And a second guide groove for sliding the second guide ball is disposed on a lower surface of the housing substrate.
The method according to claim 1,
Further comprising a housing surrounding the first holder portion, the second holder portion, and the first substrate,
Wherein a first cover is coupled to an upper side of the housing and a second cover is coupled to a lower side of the housing.
8. The method of claim 7,
Wherein the housing is formed integrally with the first substrate.
The method according to claim 1,
Wherein the first holder portion is driven in the second direction,
And the second holder is driven in the first direction.
A first lens unit;
A first holder coupled to the first lens unit;
A second lens unit disposed above the first holder unit;
A second holder coupled to the second lens unit;
A housing substrate disposed between the first holder portion and the second holder portion;
A first magnet disposed in the first holder portion;
A second magnet disposed in the second holder portion;
A third lens unit disposed above the second lens unit; And
And a substrate disposed below the first lens unit and having a light source disposed on an upper surface thereof,
Wherein the housing substrate includes an upper surface and a lower surface,
A first coil disposed on the upper surface of the housing substrate and facing the first magnet,
And a second coil disposed on the lower surface of the housing substrate, the second coil facing the second magnet.
A light output module for emitting light to the irradiated region and a light receiving module for irradiating light from the light output module and sensing light reflected from the irradiated region,
The optical output module includes:
A first lens unit;
A first holder coupled to the first lens unit;
A second lens unit disposed above the first holder unit;
A second holder coupled to the second lens unit;
A housing substrate disposed between the first holder portion and the second holder portion;
A first magnet disposed in the first holder portion;
A second magnet disposed in the second holder portion;
A third lens unit disposed above the second lens unit; And
And a substrate disposed below the first lens unit and having a light source disposed on an upper surface thereof,
Wherein the housing substrate includes an upper surface and a lower surface,
A first coil disposed on the upper surface of the housing substrate and facing the first magnet,
And a second coil disposed on the lower surface of the housing substrate, the second coil facing the second magnet (LiDAR, Light Detection And Ranging).
A method of driving a ladder including a first lens unit and a second lens unit disposed on an upper side of a light source,
Moving the first holder in which the first lens unit is disposed in a first direction;
Moving a second holder in which the second lens unit is disposed in a second direction;
Moving the first holder in a third direction opposite to the first direction; And
And moving the second lens unit in a fourth direction opposite to the second direction.

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