KR20180026143A - light emitting module and LiDAR - Google Patents

Abstract

The present invention relates to a light output module and light detection and ranging (LIDAR). According to one embodiment of the present invention, the light output module comprises: a first lens portion including at least one lens; a second lens portion including at least one lens and disposed on the lower side of the first lens portion; an actuator moving the second lens portion; a third lens portion disposed on the lower side of the second lens portion; and a light source disposed on the lower end of the third lens portion. The actuator includes: a first housing accommodating the second lens portion and having at least one first magnet; a second housing accommodating the first housing and having at least one second magnet; and a third housing including a first coil facing the first magnet and a second coil facing the second magnet. The first housing is driven in the first direction. The first housing and the second housing are driven in the second direction.

Description

A light emitting module and a light emitting diode (LiDAR)

This embodiment relates to an optical output module and a laser diode.

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.

Lada includes an optical output module for irradiating light onto 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.

The present embodiment provides an optical output module capable of realizing a wide field of view (FOV) while reducing the lens size.

Also, an optical output module with improved rigidity is provided.

Further, it is desirable to provide a light source module including the light output module.

The optical output module according to the present embodiment includes a first lens unit including at least one lens; A second lens unit including at least one lens and disposed below the first lens unit; An actuator for moving the second lens unit; A third lens unit disposed below the second lens unit; And a light source disposed below the third lens unit, wherein the actuator includes: a first housing accommodating the second lens unit and having at least one first magnet disposed therein; A second housing receiving the first housing and having at least one second magnet disposed therein; And a third housing including a first coil facing the first magnet and a second coil facing the second magnet, wherein the first housing is driven in a first direction, The second housing can be driven in the second direction.

The second lens unit, and the first housing move in the first direction by the interaction of the first magnet and the first coil, and the second lens unit, the first housing, And can move in the second direction by the interaction of the second magnet and the second coil.

When the second lens unit moves in the first direction, the second lens unit and the first housing move integrally with the second housing in a fixed state, and the second lens unit moves in the second direction The second lens unit, the first housing, and the second housing can move integrally.

Wherein the first lens unit includes a first lens at least partially exposed upward and a second lens positioned below the first lens, the second lens unit includes a third lens positioned below the second lens, And a fourth lens positioned below the third lens, and the third lens unit may include a fifth lens positioned below the fourth lens and a sixth lens positioned below the fifth lens.

The optical output module may further include a holder unit that receives the first and third lens units and the actuator, and fixes the first lens unit and the third lens unit.

Wherein the holder unit includes a holder for accommodating the first and third lens portions and the actuator therein, and a cover which presses the peripheral portion of the upper surface of the first lens downward and is screwed to the outer peripheral surface of the holder, The third lens unit may further include a lens barrel which receives the fifth lens and the sixth lens and is screwed to the inner circumferential surface of the holder.

The second lens unit may be movable by 2.4 to 3.6 mm in the first direction and may be movable by 60 to 120 μm in the second direction.

The field of view (FOV) of the lens unit including the first through third lens units may be 100 ° to 160 °.

The first direction and the second direction may be orthogonal.

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 including at least one lens; A second lens unit including at least one lens and disposed below the first lens unit; An actuator for moving the second lens unit; A third lens unit disposed below the second lens unit; And a light source disposed below the third lens unit, wherein the actuator includes: a first housing accommodating the second lens unit and having at least one first magnet disposed therein; A second housing receiving the first housing and having at least one second magnet disposed therein; And a third housing including a first coil facing the first magnet and a second coil facing the second magnet, wherein the first housing is driven in a first direction, The second housing can be driven in the second direction.

The optical output module according to the present embodiment includes a second lens unit including at least one lens; An actuator for moving the second lens unit in a first direction perpendicular to an optical axis; And a light source disposed below the second lens unit, wherein the actuator includes: a first housing accommodating the second lens unit and having at least one first magnet disposed therein; And a third housing in which a first coil facing the first magnet is disposed.

Through this embodiment, scanning of the light source can be realized.

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

In addition, durability is improved by reinforcing rigidity.

1 is a perspective view showing an optical output module according to a first embodiment of the present invention.
2 is a cross-sectional view illustrating an optical output module according to a first embodiment of the present invention.
3 is a cross-sectional perspective view showing a part of the optical output module according to the first embodiment of the present invention.
4 is a perspective view showing an actuator of the optical output module according to the first embodiment of the present invention.
5 is a cross-sectional view taken along line X1-X2 of FIG.
FIG. 6 is a perspective view of the optical output module according to the first embodiment of the present invention, showing the steps (a) to (f).
7 is a reference diagram for explaining the operation of the optical output module according to the first embodiment of the present invention.
8 is a perspective view showing an optical output module according to a second embodiment of the present invention.
9 is an exploded perspective view showing an optical output module according to a second embodiment of the present invention.
10 is a side view showing an optical output module according to a second embodiment of the present invention.
11 is a perspective view showing the second lens unit of the second embodiment of the present invention.
12 is a perspective view showing a state in which the upper part of the second lens part is coupled to the upper part of the first housing so as to protrude upward in the second embodiment of the present invention.
FIG. 13 is a perspective view showing a state in which the second lens unit is coupled to be positioned below the upper end of the first housing in the second embodiment of the present invention. FIG.
14 is a plan view showing an optical output module according to a second embodiment of the present invention.
15 is a sectional view taken along line X1 - X2 in FIG.
16 is a sectional view taken along the line Y1-Y2 in Fig.
17 is an exploded perspective view showing an actuator of an optical output module according to a second embodiment of the present invention.
18 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.
19 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.
20 and 21 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 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 the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

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'. On the other hand, the magnets 313 and 323 and the coils 314 and 324 can be arranged with their positions reversed.

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. Lidar may include an optical output module for irradiating light to the irradiated area. Lidar may include a light receiving module that is irradiated from the light output module and senses light reflected from the irradiated area.

The light receiving module can sense the light irradiated from the optical output module and reflected at the irradiated area. The light receiving module can be manufactured by replacing the light source 420 in the light output module with a light receiving sensor (not shown).

The light receiving module may include a substrate 410, a light receiving sensor, and a lens, and may further include a heat radiating member 430 or a lens driving device. In the light receiving module, at least one of the substrate 410, the light receiving sensor, the heat radiating member 430, and the lens driving device may be omitted or changed. In particular, in the light receiving module, the heat radiation member 430 or the lens driving device 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 described with reference to a description of the substrate 410, the heat dissipating member 430, and the lens driving apparatus of the optical output module .

The light receiving sensor may be disposed on the substrate 410. [ The light receiving sensor may be electrically connected to the substrate 410. In one example, the light receiving sensor may be coupled to the substrate 410 by Surface Mounting Technology (SMT). As another example, the image sensor may be coupled to the substrate 410 by a flip chip technique. The light receiving sensor can detect infrared light. However, the present invention 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. However, the present invention is not limited thereto.

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

FIG. 1 is a perspective view showing an optical output module according to a first embodiment of the present invention, FIG. 2 is a sectional view showing an optical output module according to a first embodiment of the present invention, and FIG. 3 is a cross- 4 is a perspective view showing an actuator of an optical output module according to a first embodiment of the present invention, and FIG. 5 is a perspective view showing an actuator of the optical output module according to a first embodiment of the present invention, Sectional view.

The optical output module 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 required for driving the light source 420. A light source 420 and a first heat sink 431 may be coupled to the substrate 410. A light source 420 and a first heat sink 431 may be coupled to the upper surface of the substrate 410. A second heat sink 432 may be coupled to the substrate 410. A second heat sink 432 may be coupled to a lower surface of the substrate 410. The substrate 410 may be a printed circuit board (PCB). However, it is not limited thereto.

The light source 420 may be positioned below the lens unit 100. The light source 420 may be positioned 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 can receive power from the substrate 410. The light source 420 may be a laser diode or a VCSEL. The light source 420 can emit infrared light. However, the present invention is not limited thereto.

The radiation member 430 may be in contact with at least one of the light source 420 and the substrate 410. The radiation member 430 may be coupled to the light source 420. The radiation member 430 may be coupled to the substrate 410. The radiation member 430 may emit heat generated in the light source 420. That is, the heat dissipating 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 a first heat dissipation plate 431 and a second heat dissipation plate 432. However, at least one of the first heat radiating plate 431 and the second heat radiating plate 432 in the heat radiating member 430 may be omitted or changed.

The first heat sink 431 may be disposed above the substrate 410. In this case, the first heat sink 431 may be referred to as an 'upper heat sink'. 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. A light source 420 may be positioned between the first heat sink 431 and the substrate 410. That is, the first heat sink 431 can receive at least a part of the light source 420. The first heat radiating plate 431 may be formed in 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 disposed below the substrate 410. In this case, the second heat sink 432 may be referred to as a 'lower heat sink'. The second heat sink 432 may be coupled to the lower surface of the substrate 410. The second heat sink 432 may be spaced at least partially from the underside of the substrate 410. 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 be coupled to the substrate 410. The lens driving device may be disposed on the upper side of the substrate 410. The lens driving device may be disposed on the upper surface of the substrate 410. The light emitted from the light source 420 may be emitted to the outside of the optical output module through the lens driving device.

The lens driving device may include a lens unit 100, a holder unit 200, and an actuator 300. However, at least one of the lens unit 100, the holder unit 200, and the actuator 300 in the lens driving apparatus may be omitted or changed.

The lens unit 100 may be disposed on the upper side of the light source mounted on the substrate 410. The lens unit 100 may be arranged to overlap with the light source 420 mounted on the substrate 410. Through such a structure, the light emitted from the light source 420 can be emitted to the outside through the lens unit 100. The lens unit 100 can change the path of at least part of the light emitted from the light source 420. [ The lens unit 100 can change the outgoing direction of light finally emitted from the optical output module. 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 plurality of lens groups. The lens unit 100 may include, for example, three lens groups including a focusing lens portion, a steering lens portion, and an enlarged lens portion. The lens unit 100 may include one or a combination of three or more lens groups. The lens unit 100 may include only one or more steering lens parts including at least one lens. 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 100 ° to 160 °. The angle of view of the lens unit 100 may be formed by driving 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 first lens unit 110, a second lens unit 120, and a third lens unit 130. However, any one or more of the first lens unit 110, the second lens unit 120, and the third lens unit 130 in the lens unit 100 may be omitted or changed. The lens unit 100 may include a focusing lens unit, a steering lens unit, and an enlarged lens unit. The first lens unit 110, the second lens unit 120, and the third lens unit 130 may be any one of a focusing lens unit, a steering lens unit, and an enlargement lens unit. Here, the first lens unit 110 may be referred to as an 'enlarged lens unit', the second lens unit 120 may be referred to as a 'steering lens unit', and the third lens unit 130 may be referred to as a 'focusing lens unit'. The focusing lens unit can collect light. The steering lens unit may be driven to change the optical path finally outputted from the optical output module. The enlarged lens portion can serve to make the outgoing angle of the light incident on the enlarged lens portion larger.

The lens unit 100 may include a first lens unit 110. At least a part of the first lens unit 110 may be exposed upward. The lens unit 100 may include a second lens unit 120 positioned below the first lens unit 110. The lens unit 100 may include a 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 arranged from the upper side to the lower side. At this time, 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 arranged in a different order.

At least a part of the first lens unit 110 can be received in the holder unit 200. The center portion of the first lens unit 110 may be exposed to the outside. The central portion of the first lens unit 110 may be exposed upward. The side surface, the peripheral portion, or the lower portion of the first lens portion 110 can be received by the holder unit 200. The outer or peripheral portion of the upper surface of the first lens unit 110 may be pressed down by the cover 220 and fixed.

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

At least a part of the first lens 111 can be accommodated in the holder unit 200. The first lens 111 may be exposed at least partly upward. The central portion of the first lens 111 can be exposed to the outside. The central portion of the first lens 111 can be exposed upward. The peripheral portion of the first lens 111 can be received by the holder unit 200. [ The peripheral portion of the upper surface of the first lens 111 can be pressed down by the cover 220 and fixed. The first lens 111 may have the largest diameter as compared with the second through 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 located above the third lens 121. [ The diameter of the second lens 112 may be smaller than the diameter of the first lens 111 and larger than the diameter of the third lens 121. The second lens 112 may be disposed such that the optical axis thereof coincides with the first lens 111.

The first lens barrel 113 can accommodate at least a part of the first lens 111. The first lens barrel 113 can receive at least a part of the second lens 112. The first lens barrel 113 can support the outer circumferential surface of the first lens 111. The first lens barrel 113 can support the outer peripheral surface of the second lens 112. The first lens barrel 113 can be accommodated in the holder unit 200. The first lens barrel 113 can be received inside the cover 220. At least a portion of the first lens barrel 113 may be seated in the holder 210. At least a part of the lower surface of the first lens barrel 113 can be supported by the holder 210. At least a part of the first lens barrel 113 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 can move in a direction perpendicular to the optical axis of the lens unit 100. [ The movement of the second lens unit 120 in the direction of the optical axis of the lens unit 100 can be restricted. The upper end of the second lens unit 120 may be in direct contact with 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. The lower end of the second lens unit 120 can directly contact the third lens unit 130. [ The lower end of the second lens unit 120 may be supported by the third lens unit 130.

The second lens unit 120 can move in a first direction or a first direction perpendicular to the optical axis of the lens unit 100. The second lens unit 120 can move in a second direction or a second direction that is perpendicular to the optical axis of the lens unit 100 and different from the first axis direction. At this time, the first direction and the second direction may be orthogonal to each other. Further, 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 2.4 mm to 3.6 mm in the first axis direction. The second lens unit 120 may be movable by 60 to 120 占 퐉 in the second axis direction. In this case, the angle of view of the lens unit 100 can be secured to 120 to 160 degrees.

The second lens unit 120 may include a third lens 121, a fourth lens 122, and a second lens barrel 123. However, any one or more of the third lens 121, the fourth lens 122, and the second lens barrel 123 in the second lens unit 120 may be omitted or changed. The second lens unit 120 may include a third lens 121 located below the second lens 112. The second lens unit 120 may include a fourth lens 122 positioned below the third lens 121. The third lens 121 and the fourth lens 122 can be moved by the actuator 300. In this case, the third lens 121 and the fourth lens 122 may be referred to as a 'movable 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 can be moved by the actuator 300. The third lens 121 may be disposed so that its optical axis coincides with the fourth lens 122. The diameter of the third lens 121 may correspond to the diameter of the fourth lens 122.

And 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.

And the second lens barrel 123 can accommodate at least a part of the third lens 121. [ And the second lens barrel 123 can receive at least a part of the fourth lens 122. [ The second lens barrel 123 can support the outer circumferential surface of the third lens 121. The second lens barrel 123 can support the outer circumferential surface of the fourth lens 122. The second lens barrel 123 can be accommodated in the holder unit 200. And 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 can 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 positioned below the second lens unit 120. The third lens unit 130 may be positioned above the light source 420. The outer circumferential surface of the third lens unit 130 can contact the inner circumferential surface of the holder 210. [ The outer circumferential surface of the third lens unit 130 can be screwed to the inner circumferential surface of the holder 210. [ The inner circumferential surface of the third lens unit 130 can be in contact with the outer circumferential surface of the first heat sink 431. The inner circumferential surface of the third lens unit 130 may be screwed to the outer circumferential surface of the first heat sink 431.

The third lens unit 130 may include a fifth lens 131, a sixth lens 132, and a third lens barrel 133. However, any one or more of the fifth lens 131, the sixth lens 132, and the third lens barrel 133 in the third lens unit 130 may be omitted or changed. The third lens unit 130 may include a fifth lens 131 located below the fourth lens 122. The third lens unit 130 may include a sixth lens 132 positioned below the fifth lens 131. The third lens unit 130 may include a third lens barrel 133 receiving the fifth lens 131 and the sixth lens 132 and screwed to the inner circumferential surface of the holder 210.

And the fifth lens 131 may be positioned below the fourth lens 122. [ The fifth lens 131 may be positioned above the sixth lens 132. And the fifth lens 131 may be supported by the third lens barrel 133. [ The fifth lens 131 can be accommodated in the holder 210. The fifth lens 131 may be disposed such that the optical axis thereof coincides with the first lens 111 and the second lens 112. 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'.

And the sixth lens 132 may be positioned below the fifth lens 131. [ The sixth lens 132 may be positioned above the light source 420. And the sixth lens 132 may be supported by the third lens barrel 133. [ The sixth lens 132 may be received in the holder 210. The sixth lens 132 may be disposed such that the optical axis thereof coincides with the fifth lens 131. The sixth lens 132 may be a lens for collimating. That is, the sixth lens 132 can generate parallel light through the light emitted 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 can receive the fifth lens 131. And the third lens barrel 133 can receive the sixth lens 132. [ The third lens barrel 133 can support the outer circumferential surface of the fifth lens 131. The third lens barrel 133 can support the outer circumferential surface of the sixth lens 132. The third lens barrel 133 can be screwed onto the inner circumferential surface of the holder 210. The third lens barrel 133 may be screwed to the outer circumferential surface of the first heat sink 431.

The holder unit 200 can accommodate at least a part of the lens unit 100. The holder unit 200 can fix the first lens unit 110. The holder unit 200 can fix the third lens unit 130. [ The holder unit 200 can movably receive the second lens unit 120 therein. The holder unit 200 includes a first lens unit 110 and a third lens unit 130 and a second lens unit 130 disposed between the first lens unit 110 and the third lens unit 130, 120 may be movably received. The holder unit 200 can house the actuator 300 for moving the second lens unit 120 therein.

The holder unit 200 may include a holder 210 and a cover 220. However, any one or more of the holder 210 and the cover 220 in the holder unit 200 may be omitted or changed. Further, the holder 210 and the cover 220 may be integrally formed. The holder unit 200 may include at least a portion of the lens unit 100 and a holder 210 for accommodating the actuator 300 therein. The holder unit 200 may include a cover 220 that presses the peripheral portion of the upper surface of the first lens 111 downward and is screwed to the outer peripheral surface of the holder 210.

The holder 210 can accommodate at least a part of the lens unit 100 therein. The holder 210 can receive 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 can be coupled with the heat radiation 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 house the actuator 300 therein. The holder 210 may include an actuator receiving groove having a shape corresponding to the shape of the actuator 300. The holder 210 may include an actuator receiving groove having a shape corresponding to the shape of the rectangular parallelepiped actuator 300. 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 the rectangular parallelepiped shape by housing the lens unit 100 whose 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 at an intermediate portion thereof.

The cover 220 can press the peripheral portion of the upper surface of the first lens 111 downward. The cover 220 can be screwed to the outer circumferential surface of the holder 210. The cover 220 may be coupled to the upper portion of the holder 210. The holder 210 can receive the first lens unit 110 therein. The cover 220 may include a hollow hole that exposes a part of the upper surface of the first lens 111. The cover 220 may be formed as a lower opening type. The side surface of the cover 220 can be coupled to the side surface of the holder 210. A space may be formed in the interior by the engagement of the cover 220 and the holder 210. The lens unit 100 and the actuator 300 can 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 the electromagnetic interaction.

The actuator 300 can move the second lens unit 120. [ The actuator 300 can move the second lens unit 120 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 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 can move the second lens unit 120 in the first axis direction and the second axis 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 at least one of the X-axis direction and the Y-axis direction.

The actuator 300 may include a first axis drive unit 310 and a second axis drive unit 320. [ However, any one or more of the first axis drive unit 310 and the second axis drive unit 320 in the actuator 300 may be omitted or changed.

The actuator 300 may include a first axis driving unit 310 that moves the second lens unit 120 in a first axis direction. The actuator 300 includes a second axis driving unit 320 for moving at least a part 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 .

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

The first shaft driving unit 310 includes a first housing 311a, a second housing 312a, a first magnet 313, a first coil 314, a first guide portion 315, and a first sensor 316 ). The first housing 311a, the second housing 312a, the first magnet 313, the first coil 314, the first guide portion 315, and the first sensor 315. [ (316) may be omitted or changed. The first axis driving unit 310 may include a first housing 311a to which the second lens unit 120 is coupled. The first axis driving unit 310 may include a second housing 312a that is spaced apart from the first housing 311a. The first axis driving unit 310 may include a first magnet 313 located in the first housing 311a. The first axis driving unit 310 may include a first coil 314 located in the second housing 312a and facing the first magnet 313. [ The first axis driving unit 310 may include a first guide unit 315 for guiding the movement of the first housing 311a.

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

A part of the outer circumferential surface of the first housing 311a may be separated from the second housing 312a. The first housing 311a may be spaced apart from the second housing 312a in the first axial direction. The first housing 311a can be in surface contact with the second housing 312a in the second axial direction. With this structure, the first housing 311a can move in the first axial direction while the second housing 312a is fixed. In addition, when the second housing 312a moves in the second axial direction, the first housing 311a can move integrally with the second housing 312a.

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

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

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

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

The first sensor 316 may sense the position and / or movement of the first housing 311a. The first sensor 316 may be used for feedback of movement to the first housing 311a. The first sensor 316 may be located in the second housing 312a. The first sensor 316 can sense the magnetic field of the first magnet 313. The first sensor 316 can detect the position of the first housing 311a 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 be opposed to the first magnet 313. The first sensor 316 may be located between the plurality of first coils 314. As an alternative, the first sensor 316 may sense a sensing magnet (not shown) disposed separately from the first magnet 313.

The second axis driving unit 320 can move the second lens unit 120 in the second axial direction. The second shaft driving unit 320 can move at least a part of the first shaft driving unit 310 in the second axial direction. The second axis driving unit 320 can move at least a part of the second lens unit 120 and the first axis driving unit 310 integrally. The second axis driving unit 320 can move the entire second lens unit 120 and the first axis driving unit 310 integrally. 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 321a, a second magnet 323, a second coil 324, a second guide unit, and a second sensor 326. In the second axis drive unit 320, at least one of the third housing 321a, the second magnet 323, the second coil 324, the second guide portion, and the second sensor 326 is omitted or omitted. can be changed. On the other hand, the second housing 312a can also be understood as a constitution of the second shaft driving unit 320. [ The second shaft driving unit 320 includes a third housing 321a spaced apart from the second housing 312a, a second magnet 323 located in the second housing 312a, A second coil 324 opposed to the second magnet 323 and a second guide part guiding movement of the second housing 312a.

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

And the second magnet 323 may be located in the second housing 312a. And the second magnet 323 may be disposed on the outer circumferential surface of the second housing 312a. The second magnet 323 may be disposed on one side of the second housing 312a. The plurality of second magnets 323 may be disposed on the plurality of side surfaces of the second housing 312a. And the second magnet 323 can be opposed to the second coil 324. In this case, when power is supplied to the second coil 324, the second magnet 323 can move by electromagnetic interaction. At this time, the second housing 312a to which the second magnet 323 is fixed can move integrally with the second magnet 323. The second housing 312a can move in the second axial direction by the electromagnetic interaction between the second magnet 323 and the second coil 324. [ The second housing 312a can move in the Y axis direction by the electromagnetic interaction between the second magnet 323 and the second coil 324. [ At this time, the second lens unit 120 and the first housing 311a can move integrally with the second housing 312a.

And the second coil 324 may be located in the third housing 321a. And the second coil 324 may be disposed on the inner peripheral surface of the third housing 321a. The second coil 324 may be disposed on one side of the third housing 321a. The plurality of second coils 324 may be disposed on the plurality of side surfaces of the third housing 321a. And the second coil 324 can be opposed to the second magnet 323. In this case, when power is supplied to the second coil 324, the second coil 324 can move the second magnet 323 through the electromagnetic interaction. Meanwhile, the second coil 324 may be positioned in the second housing 312a, and the second magnet 323 may be positioned in the third housing 321a.

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

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

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

FIG. 6 is a perspective view of the optical output module according to the first embodiment of the present invention, showing the steps (a) to (f).

First, a substrate 410 on which a light source 420 is mounted is prepared as shown in FIG. 6 (a). 6B, a first heat radiating plate 431 is disposed on the upper surface of the substrate 410 and a second heat radiating plate 432 is disposed on the lower side of the substrate 410. As shown in FIG. 6 (c), the third lens unit 130 is coupled to the protrusion, which receives the light source 420, from the first heat radiating plate 431. As shown in FIG. At this time, a thread is formed on the outer circumferential surface of the protruding portion and a part of the inner circumferential surface of the third lens barrel 133 to be screwed. 6 (d), the holder 210 is coupled to the upper surface of the first heat radiating plate 431 to receive the third lens unit 130 inside. At this time, the holder 210 can be coupled with the second heat sink 432 by a coupling member. 6 (e), the actuator 300 coupled with the second lens unit 120 is accommodated in the holder 210. As shown in FIG. Then, as shown in FIG. 6F, the first lens unit 110 and the cover 220 are coupled to complete the manufacture of the optical output module according to the present embodiment. At this time, the inner circumferential surface of the cover 220 and the outer circumferential surface of the holder 210 may be threaded and threaded.

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

7 is a reference diagram for explaining the operation of the optical output module according to the first 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 can move in the X-axis direction and the Y-axis direction with respect to the substrate 410. Here, the movement of the second lens unit 120 is limited to the X axis / Y axis. However, according to the embodiment, the second lens unit 120 may move in three or more directions.

The optical output module according to this embodiment can irradiate light at the point indicated by start in Fig. Then, the first axis driving unit 310 moves the second lens unit 120 by a second distance L2 in a first direction parallel to the X axis (see A in Fig. 7). More specifically, when power is supplied to the first coil 314 located in the second housing 312a, the first magnet 313 located in the first housing 311a contacts the first coil 314 and the electromagnetic inter- So that the second lens unit 120, the first housing 311a, and the first magnet 313 move integrally in the first direction. At this time, the second housing 312a is kept in a fixed state.

Then, the second axis driving unit 320 moves the second lens unit 120 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 324 located in the third housing 321a, the second magnet 323 located in the second housing 312a is electrically coupled to the second coil 324, The second lens unit 120, the first housing 311a, the second housing 312a, and the second magnet 323 move integrally in the second direction.

Thereafter, the first axis driving unit 310 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 314, the second housing part 312a is fixed to the second lens part 120, the first housing 311a, and the first magnet 313, .

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

Thereafter, as described above, the first axis drive unit 310 and the second axis drive unit 320 alternately operate to move the second lens unit 120 (see E, F, and G in FIG. 7).

Then, the second axis driving unit 320 is moved by three times the first distance L1 in the fourth direction opposite to the second direction (H). Thus, the second lens unit 120 arrives at a position indicated by End / Start and completes one cycle. At this time, the driving cycle of the second lens unit 120 may be performed at a cycle of 20 Hz. On the other hand, the first distance L1 shown in Fig. 7 may be 30 mu m. That is, the Y axis displacement amount of the optical output module according to the present embodiment may be 90 [mu] m. Also, the second distance L2 may be 3 mm. That is, the X axis shift amount of the optical output module according to the present embodiment may be 3 mm.

Hereinafter, a configuration of an optical output module according to a second embodiment of the present invention will be described with reference to the drawings. Hereinafter, the first housing 311, the second housing 321 and the third housing 312 will be described. However, the first, second, and third used in this case are intended to distinguish the constituent elements from other constituent elements, and the nature, order, order, etc. of the constituent elements are not limited by the terms.

9 is an exploded perspective view illustrating an optical output module according to a second embodiment of the present invention. FIG. 10 is a cross-sectional view of the optical output module according to the second embodiment of the present invention. 11 is a perspective view showing a second lens unit according to a second embodiment of the present invention, and Fig. 12 is a plan view of the second lens unit according to the second embodiment of the present invention. FIG. 13 is a perspective view illustrating a state in which the second lens unit is coupled to be positioned below the upper end of the first housing in the second embodiment of the present invention. FIG. 14 is a plan view showing an optical output module according to a second embodiment of the present invention, Fig. 15 is a sectional view taken along line X1 - X2 in Fig. 10, and Fig. 16 is a sectional view taken along line Y1 - FIG. 17 is a view showing a second embodiment of the present invention 18 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, and Fig. 19 is an exploded perspective view showing an actuator of the optical output module according to the second embodiment of the present invention FIGS. 20 and 21 are exploded perspective views showing a part of an actuator of the optical output module according to the second embodiment of the present invention. FIGS. 20 and 21 are exploded perspective views showing a part of the actuator of the optical output module.

The optical output module according to the second embodiment of the present invention 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 description of the substrate 410, the light source 420, and the heat radiation member 430 in the optical output module according to the second embodiment of the present invention is the same as the description of the substrate 410, the light source 420, (430) may be applied analogously.

The explanation of the lens driving apparatus according to the second embodiment of the present invention can be applied to the explanation of the lens driving apparatus according to the first embodiment. Therefore, the lens driving apparatus according to the second embodiment will be described below focusing on the differences from the first embodiment.

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, at least one of the lens unit 100, the holder unit 200, and the actuator 300 in the lens driving apparatus according to the second embodiment of the present invention may be omitted.

The second lens unit 120 may be disposed movably within the holder unit 200. [ The second lens unit 120 may be disposed below the first lens unit 110 so as to be movable within the holder unit 200.

The second lens unit 120 may include a gripper 124 formed on the second lens barrel 123. The grip portion 124 may be exposed outward in the horizontal direction through the through hole 230. [ The grip portion 124 may protrude radially from the outer peripheral surface of the second lens barrel 123. The grip portion 124 may be formed at the lower end of the second lens barrel 123. The grip portion 124 may include a plurality of protrusions 124a that are spaced apart from each other. The projections 124a may become narrower toward the outer side from the outer peripheral surface of the second lens barrel 123 at least in part. The length of the projection 124a in the optical axis direction may be shorter than the length of the through hole 230 in the optical axis direction. Thus, even if the projection 124a moves in the optical axis direction, the projection 124a can be exposed to the outside in the horizontal direction through the through hole 230. The plurality of protrusions 124a may be composed of eight protrusions 124a. The eight protrusions 124a may be disposed on the outer peripheral surface of the second lens barrel 123 at regular intervals. When the second lens barrel 123 rotates by the distance between the adjacent projections 124a of the eight projections 124a, the second lens unit 120 can move by 30 to 50 占 퐉 in the optical axis direction. In other words, when the second lens barrel 123 rotates by 45 占 (= 360 占 / 8), the second lens unit 120 can move by 30 to 50 占 퐉 in the optical axis direction. At this time, the second lens unit 120 can move by 40 mu m in the optical axis direction. The active alignment of the second lens barrel 123 can be adjusted to the shape of the protruding portion of the screw-shaped processing foot. Adjustment of the protruding part 1 can make 40μm adjustment.

The protrusion 124a of the grip 124 of the second lens barrel 123 is rotated through the through hole 230 of the holder unit 200 so that the second lens barrel 123 is rotated in the first housing 311, the alignment of the second lens unit 120 can be adjusted. The protrusion 124a of the grip 124 is rotated from the outside through the through hole 230 so that the upper end of the second lens barrel 123 protrudes from the upper end of the first housing 311 as shown in FIG. The second lens barrel 123 can be positioned. At this time, the projection 124a may be rotated clockwise. Alternatively, the projection 124a may be rotated counterclockwise. The projection 124a of the grip 124 is rotated from the outside through the through hole 230 so that the upper end of the second lens barrel 123 is positioned below the upper end of the first housing 311 The second lens barrel 123 can be positioned. At this time, the projection 124a may be rotated clockwise or counterclockwise, but may be opposite to the direction rotated to raise the second lens barrel 123.

The second lens unit 120 may include a first screw thread 125 formed on an outer circumferential surface of the second lens barrel 123. The first screw thread 125 may be formed on the outer circumferential surface of the second lens barrel 123. A second thread may be formed on the inner circumferential surface of the first housing 311. The second thread may be formed on the inner circumferential surface of the first housing 311. The first screw thread 125 may correspond to a second screw thread formed on the inner circumferential surface of the first housing 311. That is, the first screw thread 125 of the second lens barrel 123 can be screwed into the second screw thread of the first housing 311. [ In other words, the second lens barrel 123 can move upward or downward relative to the first housing 311 when rotated. In the present embodiment, since the upper and lower sides are parallel to the optical axis, active alignment can be performed only by rotating the second lens barrel 123 in this embodiment. The first screw thread 125 can be micro-machined on the outer periphery of the second lens barrel 123. [ The pitch of the first threads 125 may be 0.2 to 0.4 mm. The pitch of the first threads 125 may be 0.3 mm as an example. The pitch of the first threads 125 can be adjusted.

The holder 210 may include an upper holder 211 and a lower holder 212. However, any one or more of the upper holder 211 and the lower holder 212 in the holder 210 may be omitted or changed. Further, the upper holder 211 and the lower holder 212 may be integrally formed.

The upper holder 211 may be coupled to the upper portion of the lower holder 212. The upper holder 211 may be a lower open type. The upper holder 211 may include a protrusion protruding upward to engage with the cover 220. The upper holder 211 may include an opening through which the lens unit 100 passes. The side surface of the upper holder portion 211 can be engaged with the side surface of the lower holder portion 212. The side surface of the upper holder part 211 can be coupled to the outside of the side surface of the lower holder part 212. The upper holder 211 and the lower holder 212 can be coupled to each other by a separate coupling member. At this time, the coupling member may be a bolt or a screw.

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

A through hole 230 may be formed in the side surface of the holder unit 200. The through hole 230 may be formed through the side surface of the holder unit 200. The grip portion 124 formed on the second lens barrel 123 through the through hole 230 can be exposed outward in the horizontal direction. In this case, the operator can advance the active alignment of the second lens 120 by rotating the gripper 124 through the through hole 230 in the manufacturing process. More specifically, when the worker presses the projection 124a of the gripper 124 and rotates the second lens barrel 123 by passing the through hole 230 through a member such as a rod, the second lens barrel 123 may move upward or downward with respect to the first housing 311 which is screwed to perform active alignment. The length of the through hole 230 in the optical axis direction may be longer than the optical axis length of the projection 124a. The through hole 230 may have a rectangular shape when viewed in the horizontal direction. However, the present invention is not limited thereto.

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

The first shaft driving unit 310 includes a first housing 311, a third housing 312, a first magnet 313, a first coil 314, a first guide portion 315, a first sensor 316 And a first sensing magnet 317. In the first axis drive unit 310, the first housing 311, the third housing 312, the first magnet 313, the first coil 314, the first guide portion 315, One or more of the first sensing magnet 316 and the first sensing magnet 317 may be omitted or changed.

The first housing 311 may include a body portion 311a coupled to the second lens portion 120. [ The first housing 311 may include a wing portion 311b extending outward from the body portion 311a. The body portion 311a can be engaged with the movable lens. The second lens unit 120 may be coupled to the inner circumferential surface of the body 311a. The wing portion 311b may extend outward from the body portion 311a. The first magnet 313 may be disposed on the lower surface of the wing portion 311b so as to face the lower side.

The first coil 314 may have two pairs of two coils. At this time, the first magnet 313 may be positioned between the pair of coils. Two first magnets 313 may be provided, one for 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 portion 332 and the third coil coupling portion 333 of the substrate 330.

The first guide portion 315 may be disposed between the first housing 311 and the third housing 312. The first guide part 315 can guide the first housing 311 to slide relative to the third housing 312. The first guide portion 315 may be disposed between the first housing 311 and the second housing 321. The first guide portion 315 can guide the first housing 311 to slide relative to the second housing 321. The first guide portion 315 may include a guide plate 315a including a plurality of through holes. The first guide portion 315 may include a plurality of guide balls 315b disposed in through holes of the guide plate 315a. The first guide part 315 may be provided on one side of the first housing 311 and two on the other side of the first housing 311. The first guide portion 315 may include two guide balls 315b and a guide plate 315a for rotatably receiving the two guide balls. Three holes having a shape corresponding to the diameter of the guide ball 315a may be formed in the guide plate 315a. The guide ball 315a can be accommodated in two of three holes.

The sensors 316 and 326 can sense movement of the movable lens. At this time, the movable lens may include the third lens 121 and the fourth lens 122 of the second lens unit 120. The sensors 316 and 326 can sense the movement of the second lens unit 120. [ The sensors 316 and 326 may include a first sensor 316 that senses movement of the movable lens in a first axial direction. In this case, the 'first axis direction' may be a direction in which the movable lens and the first housing 311 move due to the interaction between the first magnet 313 and the first coil 314. The sensors 316 and 216 may include a second sensor 326 that senses movement of the movable lens in a second axial direction. The second axis direction may be a direction in which the movable lens, the first housing 311, and the second housing 321 move together by the interaction of the second magnet 323 and the second coil 324 have.

The first sensor 316 may be disposed in the third housing 312. Alternatively, the first sensor 316 may be disposed in the second housing 321. The first sensor 316 can sense the first sensing magnet 317. The first sensor 316 may be a hall sensor as an example. The first sensor 316 can sense the magnetic force of the first sensing magnet 317. The first sensor 316 can detect the position and / or movement of the first housing 311 to which the first sensing magnet 317 is fixed by sensing the first sensing magnet 317. The first sensor 316 may be located in the second housing 321. The first sensor 316 may be arranged 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 portion 336.

The first sensing magnet 317 may be disposed 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 received in the sensing magnet receiving groove formed on the 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 arranged so as not to affect the electromagnetic interaction between the second magnet 323 and the second coil 324. [ The first sensing magnet 317 may be disposed above the wing portion 311b on the outer circumferential surface of the body portion 311a. The first sensing magnet 317 may be disposed on the outer circumferential surface of the body portion 311a. The first sensing magnet 317 may be disposed above the wing 311b. With this structure, magnetic interference between the first sensing magnet 317 and the first magnet 313 arranged to face the lower side of the lower surface of the wing portion 311b can be minimized. In an alternative embodiment, the first sensor 316 and the first sensing magnet 317 may be arranged in a different position.

The second shaft driving unit 320 includes a second housing 321, a third housing 312, a second magnet 323, a second coil 324, a second guide portion 325, a second sensor 326 A second sensing magnet 327, and a sensor receiving portion 328. In the second shaft driving unit 320, the second housing 321, the third housing 312, the second magnet 323, the second coil 324, the second guide portion 325, The second sensing magnet 327, and the sensor receiving portion 328 may be omitted or changed. The third housing 312 can be understood as a common constitution of the first shaft driving unit 310 and the second shaft driving unit 320. A third housing 312 may be provided in the first shaft drive unit 310 and a fourth housing may be provided in the second shaft drive unit 310 in addition to the third housing 312. At this time, the third housing 312 and the fourth housing may be integrally formed. Therefore, it can be explained that the fourth housing is omitted and the second coil 324 is disposed in the third housing 312. [

The second shaft driving unit 320 may include a second housing 321 spaced apart from the third housing 312. The second shaft driving unit 320 may include a second magnet 323 located in the second housing 321. [ The second shaft driving unit 320 may include a second coil 324 located in the third housing 312 and facing the second magnet 323. [ The second axis driving unit 320 may include a second guide unit 325 for guiding the movement of the second housing 321.

The second housing 321 may include a main body 3211 and a guide portion 3212. However, at least one of the main body 3211 and the guide portion 3212 in the second housing 321 may be omitted or changed. Further, the main body 3211 and the guide portion 3212 may be integrally formed.

The main body 3211 can receive the first housing 311 on the inner side. 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. And the second magnet 323 may be positioned on the main body 3211. The main body 3211 may be of two spaced apart configurations and may be integrally joined by the guide portion 3212. [

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

The second housing 321 may include a wing portion 321b. The wing portion 321b may extend outwardly. And the second magnet 323 may be disposed on the upper surface of the wing portion 321b so as to face the upper side.

The third housing 312 may be spaced apart from the second housing 321. A second coil 324 may be positioned in the third housing 312.

The third housing 312 may include a main body 3221 and a cover portion 3222. At least one of the main body 3221 and the cover portion 3222 in the third housing 312 may be omitted or modified. Further, the main body 3221 and the cover portion 3222 may be integrally formed.

And the second coil 324 may be positioned in the main body 3221. The main body 3221 may be spaced apart from the second housing 321.

The cover portion 3222 may be coupled to the upper surface of the main body 3221. The cover portion 3222 can be coupled to the main body 3221 by a separate engaging member. The cover portion 3222 may include a rail portion to which the guide ball can be moved. The cover portion 3222 can support the second housing 321 through the second guide portion 325. That is, the second housing 321 can not move toward the cover portion 3222 side. The second guide portion 325 can move along the rail portion of the cover portion 3222. That is, the movement of the second housing 321 can be guided by the cover portion 3222.

The second coil 324 may include two pairs of two coils. At this time, the second magnet 323 may be positioned between the pair of coils. Two second magnets 323 are provided and may be positioned one by one 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 portion 331 and the fourth coil coupling portion 334 of the substrate 330.

The second guide portion 325 may be disposed between the second housing 321 and the third housing 312. The second guide portion 315 can guide the second housing 321 to slide relative to the third housing 312. The second guide portion 325 may be provided on one side and the other side of the second housing 321, respectively. The second guide portion 325 may include two guide balls 325b and a guide plate 325a for rotatably receiving the two guide balls 325b. Three holes having a shape corresponding to the diameter of the guide ball 325b may be formed on the guide plate 325a. Two of the three holes may receive the guide ball 325b. The second guide portion 325 may include a guide plate 325a including a plurality of through holes. The second guide portion 325 may include a plurality of guide balls 325b disposed in through holes of the guide plate 325a.

The second sensor 326 may be disposed in the third housing 312. And the second sensor 326 can sense the second sensing magnet 327. The second sensor 326 may be a hall sensor. And the second sensor 326 can sense the magnetic force of the second sensing magnet 327. The second sensor 326 can detect the position and / or the movement of the second housing 321 to which the second sensing magnet 327 is fixed by sensing the second sensing magnet 327. The second sensor 326 may be arranged 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 portion 335.

The second sensing magnet 327 may be disposed in the second housing 321. The second sensing magnet 327 may be fixed to the lower portion of the second housing 321. The second sensing magnet 327 may be fixed to the inner surface of the second housing 321 as shown in FIG. And the second sensing magnet 327 can be opposed to 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 arranged so as not to affect the electromagnetic interaction between the second magnet 323 and the second coil 324. The second sensing magnet 327 may be disposed below the wing portion 321b of the second housing 321. With this structure, magnetic interference between the second sensing magnet 327 and the second magnet 323 disposed on the upper surface of the wing portion 321b so as to face the upper side can be minimized.

Alternatively, the second sensor 326 and the second sensing magnet 327 may be arranged in a different position.

The sensor receiving portion 328 may be formed in the third housing 312. The sensor receiving portion 328 can receive the second sensor 326. At least a portion of the sensor receiving portion 328 may have a shape corresponding to the second sensor 326.

The substrate 330 may electrically couple the light output module to an external configuration. The substrate 330 may be, for example, a flexible printed circuit board (FPCB). The substrate 330 may be electrically coupled to the coils 314 and 324 and the sensors 316 and 326 of the optical output module. The substrate 330 may be electrically connected to the first coil 314, the second coil 324, the first sensor 316 and the second sensor 326. The substrate 330 may have ductility. The substrate 330 may be formed by bending a plurality of times.

The substrate 330 includes a first coil coupling portion 331, a second coil coupling portion 332, a third coil coupling portion 333, a fourth coil coupling portion 334, a first sensor coupling portion 335, The second sensor coupling portion 336 and the extension portion 337. [ In the substrate 330, the first coil coupling portion 331, the second coil coupling portion 332, the third coil coupling portion 333, the fourth coil coupling portion 334, the first sensor coupling portion 335 ), The second sensor coupling portion 336, and the extension portion 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 engaging portions 331 and 334 may be located on the lower surface of the third housing 312. The first and fourth coil engaging portions 331 and 334 can be engaged with the second coil 324. The first and fourth coil coupling portions 331 and 334 can supply power to the second coil 324.

The second and third coil engaging portions 332 and 333 may be bent and extended from the first and fourth coil engaging portions 331 and 334. The second and third coil coupling portions 332 and 333 can connect the first coil coupling portion 331 and the fourth coil coupling portion 334 which are spaced apart from each other. The second and third coil engaging portions 332 and 333 may be located on the side surfaces of the third housing 312. The second and third coil engaging portions 332 and 333 may be engaged with the first coil 314. The second and third coil coupling portions 332 and 333 can supply power to the first coil 314.

The first sensor coupling portion 335 may be bent upward from the fourth coil coupling portion 334. The first sensor coupling portion 335 may be located in the sensor receiving portion 328 formed in the third housing 312. The first sensor coupling portion 335 may be coupled to the second sensor 326. The second sensor 326 may be mounted on the first sensor coupling portion 335.

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

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. Further, the coils and the magnets operate through mutual action, so that they face each other or the positions of the corresponding coils and magnets can be mutually changed.

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.

100: lens unit 200: holder unit
300: Actuator

Claims (11)

A first lens unit including at least one lens;
A second lens unit including at least one lens and disposed below the first lens unit;
An actuator for moving the second lens unit;
A third lens unit disposed below the second lens unit; And
And a light source disposed below the third lens unit,
The actuator includes:
A first housing accommodating the second lens unit and having at least one first magnet disposed therein;
A second housing receiving the first housing and having at least one second magnet disposed therein; And
And a third housing including a first coil facing the first magnet and a second coil facing the second magnet,
The first housing is driven in a first direction,
Wherein the first housing and the second housing are driven in a second direction.
The method according to claim 1,
The second lens unit and the first housing move in the first direction by an interaction between the first magnet and the first coil,
And the second lens unit, the first housing, and the second housing move in the second direction by an interaction between the second magnet and the second coil.
The method according to claim 1,
Wherein when the second lens unit moves in the first direction, the second lens unit and the first housing move integrally with the second housing in a fixed state,
And the second lens unit, the first housing, and the second housing move integrally when the second lens unit moves in the second direction.
The method according to claim 1,
Wherein the first lens unit includes a first lens that is at least partially exposed upward, and a second lens that is positioned below the first lens,
Wherein the second lens unit includes a third lens positioned below the second lens and a fourth lens positioned below the third lens,
The third lens unit includes a fifth lens positioned below the fourth lens, and a sixth lens positioned below the fifth lens.
5. The method of claim 4,
Further comprising: a holder unit that receives the first and third lens units and the actuator, and fixes the first lens unit and the third lens unit.
6. The method of claim 5,
Wherein the holder unit includes a holder that houses the first and third lens portions and the actuator therein and a cover that presses the peripheral portion of the upper surface of the first lens downward and is screwed to the outer peripheral surface of the holder,
And the third lens unit further includes a lens barrel receiving the fifth lens and the sixth lens and being screwed to the inner peripheral surface of the holder.
The method according to claim 1,
Wherein the second lens unit is movable by 2.4 to 3.6 mm in the first direction and movable by 60 to 120 占 퐉 in the second direction.
The method according to claim 1,
Wherein a field of view (FOV) of the lens unit including the first through third lens units is 100 DEG to 160 DEG.
The method according to claim 1,
Wherein the first direction and the second direction are orthogonal.
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 including at least one lens;
A second lens unit including at least one lens and disposed below the first lens unit;
An actuator for moving the second lens unit;
A third lens unit disposed below the second lens unit; And
And a light source disposed below the third lens unit,
The actuator includes:
A first housing accommodating the second lens unit and having at least one first magnet disposed therein;
A second housing receiving the first housing and having at least one second magnet disposed therein; And
And a third housing including a first coil facing the first magnet and a second coil facing the second magnet,
The first housing is driven in a first direction,
The first housing and the second housing are driven in a second direction (LiDAR, Light Detection And Ranging).
A second lens unit including at least one lens;
An actuator for moving the second lens unit in a first direction perpendicular to an optical axis; And
And a light source disposed below the second lens unit,
The actuator includes:
A first housing accommodating the second lens unit and having at least one first magnet disposed therein; And
And a third housing in which a first coil facing the first magnet is disposed.

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