WO2022039548A1 - 카메라 액추에이터 - Google Patents
카메라 액추에이터 Download PDFInfo
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- WO2022039548A1 WO2022039548A1 PCT/KR2021/011108 KR2021011108W WO2022039548A1 WO 2022039548 A1 WO2022039548 A1 WO 2022039548A1 KR 2021011108 W KR2021011108 W KR 2021011108W WO 2022039548 A1 WO2022039548 A1 WO 2022039548A1
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- piezoelectric element
- disposed
- prism
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- region
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Classifications
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- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
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- G—PHYSICS
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- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- G—PHYSICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
- G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
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- G—PHYSICS
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- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- G—PHYSICS
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- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
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- G—PHYSICS
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- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
- G03B2205/0061—Driving means for the movement of one or more optical element using piezoelectric actuators
Definitions
- This embodiment relates to a camera actuator and a camera module.
- the camera module captures a subject and stores it as an image or video, and is installed in various devices such as mobile terminals such as cell phones, laptops, drones, and vehicles.
- the device described above is equipped with a miniature camera module, and the camera module can perform an autofocus (AF) function of automatically adjusting the distance between the image sensor and the lens to align the focal lengths of the lenses.
- the camera module may perform a zooming function of zooming up or zooming out by increasing or decreasing the magnification of a distant subject through a zoom lens. .
- a zoom actuator is used for a zooming function in the camera module.
- friction torque is generated when the lens is moved due to the mechanical movement of the actuator, and problems such as a decrease in driving force, an increase in power consumption, and a decrease in control characteristics occur due to the friction torque.
- recent camera modules employ image stabilization (IS) technology to correct or prevent image stabilization due to camera movement caused by an unstable fixing device or a user's movement.
- IS image stabilization
- Such image stabilization (IS) technology includes an optical image stabilizer (OIS) technology and an image stabilization prevention technology using an image sensor.
- OIS technology is a technology that corrects motion by changing the path of light
- image shake prevention technology using an image sensor is a technology that compensates movement in a mechanical and electronic way
- OIS technology is being adopted more recently.
- the camera module may include a reflective member, a driving unit, etc. that can change the path of light to implement the OIS function.
- the reflective member may be tilted by a driving force applied from the driving unit, and a path of light may be changed during this process.
- the camera module detects a hand-shake vibration waveform generated by a user
- the reflective member may tilt to compensate for the hand-shake vibration waveform.
- problems such as noise and sync of components and a waveform compensating for the vibration waveform.
- the optical characteristics of the camera module may be deteriorated, and there is a problem that the effect of the OIS function is insignificant.
- An embodiment is to provide a camera actuator and a camera module capable of having improved optical properties.
- the embodiment is to provide a camera actuator and a camera module that can effectively control the vibration generated by hand shake.
- an embodiment is to provide a camera actuator and a camera module having improved autofocus and high magnification zoom functions.
- the embodiment intends to provide a camera actuator and a camera module capable of preventing problems such as de-centering, tilting, and friction occurring when a lens group is moved.
- a camera actuator includes a housing; a prism part disposed in the housing; and a driving unit disposed in the housing and tilting the prism unit, wherein the driving unit includes: a first piezoelectric element disposed in an overlapping region in a first direction with respect to the center of the prism unit; and a second piezoelectric element disposed in a region overlapping in a second direction different from the first direction with respect to the center of the prism portion, wherein the prism portion is tiltable in the second direction by the first piezoelectric element and provided to be tiltable in the first direction by the second piezoelectric element.
- the prism unit a prism; and a prism mover disposed to surround the prism, wherein the prism mover includes a first side facing the driving unit, the first side having a first protrusion corresponding to the first piezoelectric element, and the second and a second protrusion corresponding to the piezoelectric element.
- first piezoelectric element is in contact with the first protrusion
- second piezoelectric element is in contact with the second protrusion
- a holder to which the prism part is coupled includes a second side part corresponding to the first side part of the prism mover, the second side part corresponding to the first piezoelectric element and the first protrusion part and a first holder hole, and a second holder hole corresponding to the second piezoelectric element and the second protrusion.
- the holder includes a rotation guide part to which the recess of the prism mover is fitted, and the recess of the prism mover and the rotation guide part include an inclined surface.
- the prism part includes an elastic part coupled to the holder and the prism part, and pressing and supporting the prism part in the direction of the second side part.
- the driving unit the reinforcing plate; and a substrate portion disposed on the reinforcing plate, wherein the first piezoelectric element and the second piezoelectric element are electrically connected to the substrate portion while attached to the reinforcing plate.
- the substrate part includes an open hole exposing a region in which the first piezoelectric element and the second piezoelectric element are to be disposed on one surface of the reinforcing plate.
- an adhesive portion is provided on one surface of the reinforcing plate exposed through the open hole, and the first piezoelectric element and the second piezoelectric element are attached to the reinforcing plate through the bonding portion.
- the driving unit includes a solder unit electrically connecting the first and second piezoelectric elements and the substrate unit.
- the substrate part may include a first area disposed in the accommodation space of the housing, and a second area extending from the first area and exposed to the outside of the base.
- the housing includes a housing hole corresponding to the second region of the substrate part and a protrusion to which the second region of the substrate part is coupled.
- the second region of the substrate part is coupled to the housing to support the driving part and the prism part to be floated in the accommodation space of the housing.
- the camera actuator and the camera module according to the embodiment may effectively control vibration caused by hand shake.
- the embodiment may include a driving unit capable of tilting the prism unit to the first axis or the second axis.
- the driving unit may control the tilting of the prism unit along the first axis or the second axis.
- the driving unit may include a piezoelectric element.
- the driving unit including the piezoelectric element may be driven by the driving displacement generated by the hand-shake vibration.
- the driving unit including the piezoelectric element may tilt the prism unit in units of 1 micron when current is supplied, and thus minute hand shake may be effectively corrected. Due to this, it is possible to effectively control vibrations caused by hand shake, and thus have improved optical properties.
- the camera actuator and the camera module according to the embodiment may have improved optical properties.
- the driving unit for moving the lens group includes a piezoelectric element, and the driving unit can more precisely control the lens group.
- the camera actuator and the camera module according to the embodiment may minimize friction generated when the lens group is moved. Accordingly, the embodiment may provide more improved auto focus and zoom functions.
- FIG. 1 is a perspective view of a first camera actuator according to an embodiment.
- FIG. 2 is an exploded perspective view of the first camera actuator shown in FIG. 1 .
- FIG. 3 is an exploded perspective view of the driving module shown in FIG. 2 .
- FIG. 4 is a perspective view of a housing of a camera actuator according to an embodiment.
- 5 and 6 are perspective views of a prism part of the first camera actuator.
- FIG. 7 to 9B are perspective views of a holder of a first camera actuator.
- FIG. 10 is a perspective view of an elastic part of a first camera actuator
- FIG. 11 is a view illustrating a coupling of an elastic part, a prism part, and a holder of the first camera actuator.
- FIG. 12 is an exploded perspective view of a driving unit of a first camera actuator
- FIG. 13 is a perspective view of a substrate part constituting the driving part
- FIG. 14 is a perspective view of a driving unit of a first camera actuator.
- 15 is a view illustrating a coupling between a driving unit and a base.
- 16A to 16F are views illustrating a manufacturing method of a driving unit in order of process.
- 16G is a diagram illustrating a coupling relationship between a prism unit and a driving unit according to an embodiment.
- 17 is an exemplary diagram illustrating an operation of a driving unit of a first camera actuator according to an embodiment.
- FIG. 18 is a diagram illustrating a coupling between a first camera actuator and a second camera actuator according to an embodiment.
- FIG. 19 is an exploded perspective view of a first camera actuator and a second camera actuator according to an embodiment.
- FIG. 20 is an exploded perspective view of a second camera actuator according to an embodiment.
- 21 is a cross-sectional view of a second camera actuator according to an embodiment.
- FIG. 22 is a front view of a second camera actuator according to an embodiment.
- FIG. 23 is a perspective view illustrating third and fourth driving units disposed in a housing in the second camera actuator according to the embodiment.
- first and second driving units 24 and 25 are exploded perspective views of first and second driving units according to an embodiment.
- 26 is a perspective view of a partial configuration of the second camera actuator according to the embodiment.
- FIG. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.
- FIG. 28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.
- the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the present invention.
- the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or one or more) of A and (and) B, C", it is combined with A, B, C It may include one or more of all possible combinations.
- first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term.
- a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements.
- An optical axis direction used below may be defined as an optical axis direction of a lens coupled to a camera actuator and a camera module, and a vertical direction may be defined as a direction perpendicular to the optical axis.
- the autofocus function used below is a function to automatically focus on the subject by adjusting the distance from the image sensor by moving the lens in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor.
- auto focus may correspond to AF (Auto Focus).
- closed-loop auto focus (CLAF) control is defined as real-time feedback control of the lens position by sensing the distance between the image sensor and the lens to improve focus adjustment accuracy. can do.
- the first direction may mean the x-axis direction shown in the drawings
- the second direction may be a different direction from the first direction.
- the second direction may mean a y-axis direction shown in the drawing in a direction perpendicular to the first direction.
- the third direction may be different from the first and second directions.
- the third direction may mean a z-axis direction shown in the drawing in a direction perpendicular to the first and second directions.
- the third direction may mean an optical axis direction.
- FIG. 1 is a perspective view of a first camera actuator according to an embodiment
- FIG. 2 is an exploded perspective view of the first camera actuator shown in FIG. 1
- FIG. 3 is an exploded perspective view of the driving module shown in FIG. 2 .
- the first camera actuator 1000 may be an optical image stabilizer (OIS) actuator.
- OIS optical image stabilizer
- the first camera actuator 1000 may change the path of the light incident on the camera module 10 .
- the first camera actuator 1000 may include a housing 100 and a driving module 200 disposed on the housing 100 .
- the driving module 200 may include a prism part 300 , a driving holder 400 , an elastic part 500 , and a driving part 600 .
- the first camera actuator 1000 includes the driving unit 600 .
- the driving unit 600 includes a plurality of piezoelectric elements (to be described later) respectively disposed in a first axial direction and a second axial direction perpendicular to the first axis.
- the piezoelectric element of the driving unit 600 is in contact with the prism unit 300 .
- the piezoelectric element may be mechanically deformed by an applied power. Specifically, the piezoelectric element may expand toward one side of the prism part 300 or contract in the opposite direction by the applied power. For example, the piezoelectric element may expand or contract in an optical axis direction.
- the prism part 300 may be tilted in the first axis or the second axis direction by the expansion and contraction operations of the piezoelectric element.
- the first camera actuator 1000 may further include a cover member (not shown).
- the cover member (not shown) may include an accommodating space therein, and at least one side surface may be open.
- the cover member may be disposed to surround the outer surface of the housing.
- a portion of the driving unit 600 may be disposed on the outer surface of the housing 100 .
- a portion of the driving unit 600 may be coupled to the housing 100 .
- the substrate part 630 of the driving part 600 may be disposed on the outer surface of the housing 100 .
- the driving module 200 may be accommodated in an internal accommodating space of the housing 100 .
- the driving module 200 may be formed to float in the inner accommodation space of the housing 100 .
- floating means that, in a state in which the driving module 200 is supported by the housing 100 by some components of the driving module 200 , other components except for the partial components float in the internal accommodation space. It may mean to be placed in an existing state.
- only the substrate 630 of the driving unit 600 may be coupled to the housing 100 .
- other components of the driving module 200 except for the substrate unit 630 may be supported by the substrate unit 630 and disposed in a floating state in the inner accommodation space of the housing 100 .
- the cover member may be disposed to surround a portion of the driving unit 600 disposed on the outer surface of the housing 100 . Accordingly, the cover member may protect a portion of the driving unit 600 , the housing 100 , and the prism unit 300 .
- the cover member may have a structure in which a plurality of side surfaces connected to each other are opened.
- the cover member may have a structure in which a front surface to which light is incident from the outside, a lower surface corresponding to the first camera actuator 1000, and a rear surface opposite to the front surface are open, and the prism part 300 to be described later.
- a light movement path may be provided.
- the cover member may include a rigid material.
- the cover member may include a material such as resin or metal, and may support the housing 100 disposed in the accommodation space.
- the cover member is disposed to surround the housing 100 , the driving unit 600 , the prism unit 300 , and the like, and may support the components.
- 4 to 17 are perspective views of each configuration of the first camera actuator according to the embodiment.
- the first camera actuator 1000 may include the housing 100 and the driving module 200 .
- the driving module 200 may include a prism part 300 , a holder 400 , an elastic part 500 , and a driving part 600 .
- the prism unit 300 may include a prism 300b and a prism mover 300a.
- the driving unit 600 may include a reinforcing plate 610 , a first bonding unit 620 , a substrate unit 630 , a second bonding unit 640 , and a piezoelectric element 650 .
- the driving unit 600 may be disposed in an accommodation space within the housing 100 . According to the embodiment, by providing the driving unit 600 disposed on the housing 100, there is a technical effect that can provide an ultra-slim and ultra-small camera actuator and a camera module including the same.
- the prism part 300 can be tilted finely by using the piezoelectric element 650, and accordingly, fine hand shake correction is possible, thereby improving the OIS operation reliability.
- the OIS implementation by providing the driving unit 600 stably disposed on the housing 100 to control the tilting of the prism unit 300 to the first axis or the second axis, the OIS implementation There is a technical effect of minimizing the occurrence of a tilt phenomenon to produce the best optical properties.
- the OIS implementation with low power consumption is achieved by controlling the tilting of the prism unit 300 to the first axis or the second axis by providing the driving unit 600, unlike moving the existing plurality of solid lenses.
- FIG. 4 is a perspective view of a housing of a camera actuator according to an embodiment.
- the housing 100 may include an accommodation space for accommodating the driving module 200 including the prism part 300 , the holder 400 , the elastic part 500 and the driving part 600 . .
- the housing 100 may include a plurality of side portions surrounding the accommodation space and surrounding the accommodation space.
- the housing 100 may include a first side portion 110 , a second side portion 120 , a third side portion 130 , a fourth side portion 140 , and a fifth side portion 150 disposed to surround the accommodation space.
- the first side part 110 may correspond to the left side of the accommodation space.
- the second side part 120 may correspond to the right side of the accommodation space.
- the third side portion 130 may correspond to the rear side of the accommodation space.
- the fourth side portion 140 may correspond to the upper side of the accommodation space.
- the fifth side portion 150 may correspond to the lower side of the accommodation space.
- the housing 100 may be formed to surround a plurality of sides of the accommodation space. In this case, the housing 100 may expose at least one side of the accommodation space. In the drawing, the housing 100 may expose a front side of the accommodation space.
- the front side of the housing 100 may be a space in which the driving module 200 is inserted into the accommodation space of the housing 100 .
- the driving module 200 may be inserted through a front side of the housing 100 .
- the front side of the housing 100 may be an output unit for light emitted through the prism unit 300 .
- the front side of the housing 100 is opened to facilitate the insertion of the driving module 200 into the accommodation space of the housing 100 , and the reflection through the prism part 300 is performed. so that the emitted light can be provided to a second actuator (described later).
- the housing 100 as described above may have a hexahedral shape, but is not limited thereto.
- a first open region 141 may be formed in the fourth side portion 140 of the housing 100 .
- the first open area 141 may be an area corresponding to the prism part 300 among the driving modules 200 disposed in the accommodation space of the housing 100 .
- the first open region 141 may be a light inlet for providing light to the prism part 300 .
- a second open region 151 may be formed in the fifth side portion 150 of the housing 100 .
- the second open area 151 may be an open area for exposing some components of the driving module 200 disposed in the accommodation space of the housing 100 to the outside of the housing 100 .
- the second open region 151 may expose a portion of the substrate 630 of the driving unit 600 to the outside of the housing 100 .
- the substrate part 630 includes a first area (to be described later) disposed in the receiving space of the housing 100 and the housing ( 100) may include a second region disposed outside the.
- the driving module 200 may be supported by the housing 100 by the second region of the substrate unit 630 .
- components other than the second area of the substrate part 630 of the driving module 200 may be arranged to float in the accommodation space of the housing 100 .
- the components of the driving module 200 only the second region of the substrate part 630 may contact the housing 100 , and other components may not contact the housing 100 .
- the housing 100 may include a plurality of housing holes (not shown).
- the housing hole may be a through hole penetrating the inner surface and the outer surface of each side of the housing 100 .
- the housing 100 may include a protrusion (not shown) formed on at least one side of the plurality of sides.
- the protrusion (not shown) may include a coupling protrusion coupled to the second region of the substrate unit 630 .
- the housing 100 may include a coupling protrusion 152 that is formed on the lower surface of the fifth side part 150 and into which the substrate part 630 of the driving part 600 is fitted.
- 5 and 6 are perspective views of a prism part of the first camera actuator.
- FIG. 5 is an exploded perspective view of the prism part 300 of the first camera actuator according to the embodiment
- FIG. 6 is a perspective view of the prism mover 300a of the prism part 300 of FIG. 5 .
- the prism part 300 may be disposed in the housing 100 .
- the prism part 300 may be disposed in the accommodation space of the housing 100 .
- the prism part 300 may include a prism 300b and a prism mover 300a disposed on the prism 300b.
- the prism 300b may be a right-angle prism.
- the prism 300b may reflect the direction of light incident from the outside. That is, the prism 300b may change the path of the light incident on the first camera actuator 1000 from the outside toward the second camera actuator 2000 .
- the prism mover 300a may be disposed under the prism 300b.
- the prism mover 300a may be disposed to surround the prism 300b. At least one side of the prism mover 300a may be opened and may include an accommodating space therein.
- the prism mover 300a may have a structure in which a plurality of side portions connected to each other are opened.
- the prism mover 300a may have a structure in which a side corresponding to the prism 300b is open, and may include an accommodation space defined as the first space 340 therein.
- the prism mover 300a may have a structure in which an upper side and a front side are open.
- the open upper side of the prism mover 300a may function as a light inlet for providing light from the outside to the prism 300b.
- the open front side of the prism mover 300a may function as a light output unit that provides the light reflected through the prism 300b to the second camera actuator.
- the prism mover 300a may include an inner surface 341 .
- the inner surface 341 may be an inner surface constituting the first space 340 .
- the first space 340 may have a shape corresponding to the prism 300b.
- the inner surface 341 of the first space 340 may directly contact the prism 300b. That is, the inner surface 341 of the first space 340 may be inclined to correspond to the inclination angle of the prism 300b.
- the prism mover 300a may include a step (not shown).
- the step may cover a portion of a front side of the prism mover 300a.
- the step may cover a front side of the prism mover 300a within a range that does not block the light emitting area of the prism 300b.
- the prism 300b may be in contact with the step while it is disposed in the first space 340 of the prism mover 300a. Accordingly, it is possible to prevent the prism 300b from being separated from the prism mover 300a.
- an adhesive member such as epoxy may be applied to the inner surface 341 of the first space 340 .
- the prism 300b may be firmly fixed to the prism mover 300a by an adhesive force provided from the adhesive member (not shown).
- the step may serve as a guide and/or a seating part for the prism 300b.
- a protrusion corresponding to the step may be formed on the outside of the prism 300b, but is not limited thereto.
- a protrusion or one end of the prism 300b may be guided to the step of the prism mover 300a to be disposed in the first space 340 . Accordingly, the prism mover 300a may effectively support the prism 300b. In addition, the prism 300b may be seated at a set position, and may have improved alignment characteristics within the prism mover 300a.
- the prism part 300 may include a plurality of side parts.
- the prism mover 300a of the prism part 300 may include a plurality of side parts.
- the prism mover 300a may include a first side portion 310 corresponding to the first side portion 110 of the housing 100 .
- the prism mover 300a may include a second side portion 320 corresponding to the second side portion 120 of the housing 100 .
- the prism mover 300a may include a third side portion 330 corresponding to the third side portion 130 of the housing 100 .
- the prism mover 300a may include a recess 370 .
- the recess 370 may be formed in a lower portion of the prism mover 300a.
- the recess 370 may have a concave shape in a direction from a lower portion to an upper portion of the prism mover 300a.
- the recess 370 may function as a coupling part for coupling the prism mover 300a to the holder 400 to be described later.
- the recess 370 may include an inclined surface 371 .
- the inclined surface 371 may guide the rotational movement in the second axis when the prism mover 300a rotates about the second axis.
- the recess 370 is inserted into the rotation guide part 440 of the holder 400 which will be described later, whereby the recess 370 is inserted into the holder 400 .
- the prism mover 300a may be rotated by a driving force provided from the driving unit 600 while the rotation guide unit 440 is inserted into the recess 370 .
- the prism mover 300a may rotate about a second axis corresponding to the direction in which the rotation guide part 440 is disposed.
- the recess 370 includes the inclined surface 371 as described above.
- the inclined surface 371 may guide the rotation of the prism mover 300a more easily.
- the prism mover 300a rotates, it can rotate by sliding the rotation guide part 440 to correspond to the inclination angle of the inclined surface 371, so that the rotational operation is easier.
- the prism mover 300a may be rotated by an angle corresponding to even a slight change in the driving force provided by the driving unit 600 .
- the width of the recess 370 in the optical axis direction may be smaller than the width of the rotation guide part 440 in the optical axis direction.
- a predetermined spacing part G may be formed between the rotation guide part 440 and the recess 370 .
- the prism mover 300a may rotate about the first axis to correspond to the width of the spacer G.
- the recess 370 of the prism mover 300a has a function of a coupling part for coupling the prism mover 300a to the holder 400, a rotation guide function of guiding the rotation about the second axis, and When rotating on the first axis, it may serve as a stopper to limit the rotation range.
- a plurality of protrusions may be formed on the outer surface of the third side portion 330 of the prism mover 300a.
- the plurality of protrusions, a first protrusion 331 and the center point may include a second protrusion 332 formed in the left and right direction (x-axis direction) with respect to C).
- the first protrusion 331 and the second protrusion 332 may have a semicircular shape with rounded ends, but is not limited thereto.
- the first protrusion 331 and the second protrusion 332 may contact the piezoelectric element 650 of the driving unit 600 .
- the first protrusion 331 and the second protrusion 332 come into contact with the piezoelectric element 650 of the driving unit 600, and by the driving force provided from the piezoelectric element 650, the prism mover 300a ) can function as a rotation axis to rotate.
- the first protrusion 331 and the second protrusion 332 may be formed on an outer surface of the third side portion 330 facing the driving unit 600 .
- first protrusion 331 may contact the first piezoelectric element 651 of the driving unit 600 .
- second protrusion 332 may contact the second piezoelectric element 652 of the driving unit 600 .
- the first protrusion 331 has a center point C of the outer surface of the third side part 330, and the first 1-1 protrusions 331a and the first and second protrusions 331a and 1-2 protrusions 331b may be included.
- the 1-1 protrusion 331a and the 1-2 protrusion 331b may contact the first piezoelectric element 651 of the driving unit 600 .
- the prism mover 300a may be rotated using an imaginary line connecting the 1-1 protrusion 331a and the 1-2 protrusion 331b as a rotation axis.
- the prism mover 300a moves from the second piezoelectric element 652 to the imaginary line connecting the 1-1 protrusion 331a and the 1-2 protrusion 331b as a rotation axis. It can rotate by the driving force provided.
- the second protrusion 332 includes the 2-1 protrusion 332a and the second-th protrusion 332a and the second 2 - 2 protrusions 332b may be included.
- the 2-1 protrusion 332a and the 2-2 protrusion 332b may contact the second piezoelectric element 652 of the driving unit 600 .
- the prism mover 300a may be rotated using an imaginary line connecting the 2-1 protrusion 332a and the 2-2 protrusion 332b as a rotation axis.
- the prism mover 300a moves from the first piezoelectric element 651 to the imaginary line connecting the 2-1 protrusion 332a and the 2-2 protrusion 332b as a rotation axis. It can rotate by the driving force provided.
- the prism mover 300a may include a plurality of protrusions for coupling the elastic part 500 .
- a plurality of third protrusions 350 may be formed on one side 311 of the first side portion 310 of the prism mover 300a.
- the third protrusion 350 is spaced apart from the 3-1 protrusion 351 and the 3-1 protrusion 351 formed on the upper side of the one side 311 of the first side part 310 and the one side surface. It may include a 3-2 protrusion 352 formed on the lower side of the 311 .
- a fourth protrusion 360 may be formed on one side 321 of the second side portion 320 of the prism mover 300a.
- the fourth protrusion 360 is spaced apart from the 4-1 protrusion 361 and the 4-1 protrusion 361 formed on the upper side of the one side 321 of the second side part 320 and the one side surface.
- a 4-2th protrusion 362 formed on the lower side of the 321 may be included.
- An elastic part 500 may be fitted to the third protrusion 350 and the fourth protrusion 360 .
- the elastic part 500 may be fixed by an adhesive member (not shown) such as epoxy while being fitted to the third protrusion 350 and the fourth protrusion 360 .
- FIG. 7 to 9B are perspective views of a holder of a first camera actuator.
- the holder 400 may be disposed between the driving unit 600 and the prism unit 300 according to the embodiment.
- the holder 400 may include a first side portion 110 of the housing 100 and a first side portion 310 corresponding to the first side portion 310 of the prism mover 300a.
- the holder 400 may include the second side portion 120 of the housing 100 and the second side portion 420 corresponding to the second side portion 320 of the prism mover 300a.
- the holder 400 may include a third side portion 130 of the housing 100 and a third side portion 430 corresponding to the third side portion 330 of the prism mover 300a.
- the third side portion 430 of the holder 400 may connect one end of the first side portion 410 of the holder 400 and one end of the second side portion 420 of the holder 400 .
- the holder 400 may include a rotation guide part 440 .
- the rotation guide part 440 may connect between the inner surface of the first side part 410 of the holder 400 and the inner surface of the second side part 420 of the holder 400 .
- the rotation guide part 440 may be spaced apart from the third side part 430 of the holder 400 .
- the rotation guide part 440 may be fitted into the recess 370 of the prism mover 300a.
- the rotation guide part 440 may guide the rotation of the prism mover 300a.
- the rotation guide part 440 may limit the rotation of the prism mover 300a.
- the rotation guide part 440 may include a plane 441 and an inclined surface 442 extending from the plane 441 .
- the inclined surface 442 may correspond to the inclined surface 371 of the recess 370 of the prism mover 300a.
- the inclined surface 442 of the rotation guide part 440 may guide the rotational movement along the second axis.
- the prism mover 300a may be coupled to the holder 400 by inserting the rotation guide 440 of the holder 400 into the recess 370 .
- the prism mover 300a may be rotated by a driving force provided from the driving unit 600 while the rotation guide unit 440 is inserted into the recess 370 .
- the prism mover 300a may rotate about a second axis corresponding to the direction in which the rotation guide part 440 is disposed.
- the inclined surface 442 of the holder 400 may guide the rotation of the prism mover 300a more easily.
- the rotation guide part corresponds to the inclination angle of the inclined surface 371 of the recess 370 and the inclined surface 442 of the rotation guide part 440 . It is possible to rotate the 440 in a sliding manner, and thus an easier rotation operation can be made.
- the prism mover 300a may be rotated by an angle corresponding to even a slight change in the driving force provided by the driving unit 600 .
- the width of the recess 370 in the optical axis direction may be smaller than the width of the rotation guide part 440 in the optical axis direction. Accordingly, in a state in which the recess 370 is inserted into the rotation guide part 440 , a predetermined spacing part G may be formed between the rotation guide part 440 and the recess 370 . In addition, the prism mover 300a may rotate about the first axis to correspond to the width of the spacer G.
- the recess 370 of the prism mover 300a has a function of a coupling part for coupling the prism mover 300a to the holder 400, a rotation guide function of guiding the rotation about the second axis, and When rotating on the first axis, it may serve as a stopper to limit the rotation range.
- a plurality of holder holes may be formed in the third side portion 430 of the holder 400 .
- the holder hole of the holder 400 may be a through hole penetrating the outer and inner surfaces of the third side part 430 .
- the holder hole of the holder 400 may be formed in a region corresponding to the piezoelectric element 650 of the driving unit 600 .
- the holder hole of the holder 400 may have a size and shape corresponding to that of the piezoelectric element 650 of the driving unit 600 .
- a part or all of the piezoelectric element 650 of the driving unit 600 may be inserted into the holder hole of the holder 400 and disposed.
- the holder hole of the holder 400 may include a first holder hole 431 and a second holder hole 432 .
- the first holder hole 431 may include a 1-1 holder hole 431a and a 1-2 holder hole 431b that are spaced apart from each other in the y-axis direction, the second direction, or the vertical direction.
- the first holder hole 431 may correspond to the first protrusion 331 of the prism mover 300a and the first piezoelectric element 651 of the piezoelectric element 650 of the driving unit 600 .
- the second holder hole 432 may correspond to the second protrusion 332 of the prism mover 300a and the second piezoelectric element 652 of the piezoelectric element 650 of the driving unit 600 .
- the 1-1 holder hole 431a may be formed in a region corresponding to the 1-1 protrusion 331a of the prism mover 300a.
- the 1-1 holder hole 431a may be formed in a region corresponding to the 1-1 piezoelectric element 651a among the piezoelectric elements 650 of the driving unit 600 .
- the 1-1 holder hole 431a may correspond to a first solder part S1 for fixing the 1-1 piezoelectric element 651a to the substrate part 630 of the driving part 600 .
- the 1-2-th holder hole 431b may be formed in an area corresponding to the 1-2-th protrusion 331b of the prism mover 300a.
- the 1-2-th holder hole 431b may be formed in a region corresponding to the 1-2-th piezoelectric element 651b among the piezoelectric elements 650 of the driving unit 600 .
- the 1-2 holders hole 431b may correspond to a second solder part S2 that fixes the 1-2 th piezoelectric element 651b to the substrate part 630 of the driving part 600 .
- the second holder hole 432 may include a 2-1 th holder hole 432a and a 2-2 th holder hole 432b that are spaced apart from each other in the x-axis direction, the first direction, or the left-right direction.
- the second holder hole 432 may correspond to the second protrusion 332 of the prism mover 300a and the second piezoelectric element 652 of the piezoelectric element 650 of the driving unit 600 .
- the 2-1 th holder hole 432a may be formed in a region corresponding to the 2-1 th projection 332a of the prism mover 300a.
- the 2-1 th holder hole 432a may be formed in a region corresponding to the 2-1 th piezoelectric element 652a among the piezoelectric elements 650 of the driving unit 600 .
- the 2-1 th holder hole 432a may correspond to a third solder part S3 for fixing the 2-1 th piezoelectric element 652a to the substrate part 630 of the driving part 600 .
- the 2-2nd holder hole 432b may be formed in a region corresponding to the 2-2nd protrusion 332b of the prism mover 300a.
- the 2-2nd holder hole 432b may be formed in a region corresponding to the 2-2nd piezoelectric element 652b among the piezoelectric elements 650 of the driving unit 600 .
- the 2-2nd holder hole 432b may correspond to a fourth solder part S4 for fixing the 2-2nd piezoelectric element 652b to the substrate part 630 of the driving part 600 .
- the piezoelectric element 650 of the driving unit 600 and the first and second protrusions 331 and 332 of the prism mover 300a form the first holder hole 431 and the second holder of the holder 400 .
- the holes 432 may be disposed to directly face each other.
- the piezoelectric element 650 of the driving unit 600 is disposed in the first holder hole 431 and the second holder hole 432 of the holder 400, and accordingly, the prism mover 300a
- the first and second protrusions 331 and 332 may be disposed in direct contact with each other.
- the holder 400 may include a plurality of protrusions for coupling the elastic part 500 .
- a plurality of fifth protrusions 450 may be formed on one side of the first side portion 410 of the holder 400 .
- the fifth protrusion 450 is spaced apart from the 5-1 th protrusion 451 and the 5-1 th protrusion 451 formed on the upper side of one side of the first side part 410, and is formed on the lower side of the one side. It may include a 5-2th protrusion 452 formed.
- a sixth protrusion 460 may be formed on one side of the second side portion 420 of the holder 400 .
- the sixth protrusion 460 is spaced apart from the 6-1 th protrusion 461 and the 6-1 th protrusion 461 formed on the upper side of one side of the second side part 420, and is formed on the lower side of the one side.
- a 6-2th protrusion 362 formed may be included.
- An elastic part 500 may be fitted to the fifth protrusion 450 and the sixth protrusion 460 .
- the elastic part 500 may be fixed by an adhesive member (not shown) such as epoxy while being fitted to the fifth protrusion 450 and the fourth protrusion 460 .
- FIG. 10 is a perspective view of an elastic part of the first camera actuator
- FIG. 11 is a view showing a combination of the elastic part, the prism part, and the holder.
- the elastic part 500 may include a first elastic member 510 and a second elastic member 520 .
- the first elastic member 510 may be coupled to the prism mover 300a and the holder 400 at one side of the driving module 200 .
- the second elastic member 520 may be coupled to the prism mover 300a and the holder 400 from the other side of the driving module 200 .
- the first elastic member 510 and the second elastic member 520 may press and support the prism mover 300a and further the prism part 300 to the holder 400 .
- the first elastic member 510 and the second elastic member 520 have the third side part 430 of the holder 400 in a state in which the prism part 300 is disposed on the holder 400 . ) may be pressed and supported by the prism part 300 in a direction toward.
- the first elastic member 510 may include a 1-1 elastic region 511 .
- the first elastic member 510 may include a 1-2 th elastic region 512 spaced apart from the 1-1 elastic region 511 .
- the first elastic member 510 may include a 1-3 th elastic region 513 connecting the 1-1 elastic region 511 and the 1-2 th elastic region 512 .
- the first elastic member 510 connects the 1-1 elastic region 511 and the 1-2 th elastic region 512, and is a third elastic region spaced apart from the 1-3 elastic region 513. 1-4 elastic regions 514 .
- the 1-1 elastic region 511 may be coupled to one side of the first side portion 410 of the holder 400 . To this end, the 1-1 elastic region 511 may have a shape corresponding to one side of the first side portion 410 of the holder 400 .
- a 1-1 fastening hole 515 corresponding to a 5-1 protrusion 451 formed on one side of the first side portion 410 of the holder 400 is provided. can be formed.
- a 1-2 fastening hole 516 corresponding to a 5-2 protrusion 452 formed on one side of the first side portion 410 of the holder 400 . can be formed.
- the 1-2 elastic region 512 may be coupled to one side 311 of the first side portion 310 of the prism mover 300a.
- the 1-2 first elastic region 512 may have a shape corresponding to one side 311 of the first side portion 310 of the prism mover 300a.
- the 1-3 fastening corresponding to the 3-1 protrusion 351 formed on one side 311 of the first side part 310 of the prism mover 300a A hole 517 may be formed.
- the 1-4th protrusion 352 corresponding to the 3-2 protrusion 352 formed on one side 311 of the first side part 310 of the prism mover 300a A fastening hole 518 may be included.
- the 1-3 th elastic region 513 may connect the 1-1 th elastic region 511 and the 1-2 th elastic region 512 .
- the 1-3 elastic region 513 may include at least one bending region.
- the 1-4 th elastic region 514 may connect the 1-1 th elastic region 511 and the 1-2 th elastic region 512 .
- the 1-4th elastic region 514 may include at least one bending region.
- the first elastic member 510 is fastened to the first side portion 410 of the holder 400 and the first side portion 310 of the prism mover 300a to press and support the prism mover 300a. can do.
- the second elastic member 520 may have a shape corresponding to the first elastic member 510 .
- the second elastic member 520 may have the same shape as the first elastic member 510 .
- the second elastic member 520 may include a 2-1 elastic region 521 . Also, the second elastic member 520 may include a 2-2nd elastic region 522 that is spaced apart from the 2-1th elastic region 521 . In addition, the second elastic member 520 may include a 2-3rd elastic region 523 connecting the 2-1th elastic region 521 and the 2-2nd elastic region 522 . In addition, the second elastic member 520 connects the 2-1 th elastic region 521 and the 2-2 th elastic region 522 , and is a third elastic region spaced apart from the 2-3 th elastic region 523 . 2-4 elastic regions 524 .
- the 2-1 elastic region 521 may be coupled to one side of the second side portion 420 of the holder 400 .
- the second-first elastic region 521 may have a shape corresponding to one side of the second side portion 420 of the holder 400 .
- a 2-1 fastening hole 525 corresponding to a 6-1 th protrusion 461 formed on one side of the second side portion 420 of the holder 400 is provided. can be formed.
- a 2-2 fastening hole 526 corresponding to the 6-2 protrusion 462 formed on one side of the second side portion 420 of the holder 400 is provided. can be formed.
- the 2-2 elastic region 522 may be coupled to one side 321 of the second side portion 320 of the prism mover 300a. To this end, the 2-2 elastic region 522 may have a shape corresponding to one side 321 of the second side portion 320 of the prism mover 300a. In addition, in the 2-2 elastic region 522 , a 2-3 fastening corresponding to a 4-1 protrusion 361 formed on one side 311 of the second side part 320 of the prism mover 300a is provided. A hole 527 may be formed. In addition, in the 2-2 elastic region 522 , the 2-4th protrusion 362 is formed on one side 321 of the second side part 320 of the prism mover 300a. A fastening hole 528 may be included.
- the 2-3 th elastic region 523 may connect the 2-1 th elastic region 521 and the 2-2 th elastic region 522 to each other.
- the 2-3rd elastic region 523 may include at least one bending region.
- the 2-4 th elastic region 524 may connect the 2-1 th elastic region 521 and the 2-2 th elastic region 522 .
- the 2-4th elastic region 524 may include at least one bending region.
- the second elastic member 520 is fastened to the second side portion 420 of the holder 400 and the second side portion 320 of the prism mover 300a to press and support the prism mover 300a. can do.
- FIGS. 12 to 16 are perspective views of a driving unit of a first camera actuator according to an embodiment.
- FIG. 12 is an exploded perspective view of the driving unit of the first camera actuator
- FIG. 13 is a perspective view of the substrate constituting the driving unit
- FIG. 14 is a perspective view of the driving unit of the first camera actuator
- FIG. 15 is the combination of the driving unit and the base 16A to 16F are views showing a manufacturing method of the driving unit in process order
- FIG. 16G is a view showing a coupling relationship between the prism unit and the driving unit according to the embodiment.
- the driving unit 600 may include a reinforcing plate 610 , a first bonding unit 620 , a substrate unit 630 , a second bonding unit 640 , and a piezoelectric element 650 . .
- the reinforcing plate 610 may be anodized aluminum, but is not limited thereto.
- the reinforcing plate 610 may serve to support the piezoelectric element 650 in order to mount the piezoelectric element 650 on the substrate unit 630 .
- the reinforcing plate 610 may be in contact with the piezoelectric element 650 and thus may function to radiate heat generated from the piezoelectric element 650 to the outside.
- the reinforcing plate 610 may function to impart rigidity to the substrate 630 on which the piezoelectric element 650 is mounted.
- the reinforcing plate 610 may be oxidized to insulate the substrate part 630 and the solder parts S1 , S2 , S3 , and S4 electrically connecting the piezoelectric element 650 to each other. Accordingly, the reinforcing plate 610 may be insulated from the solder portions S1 , S2 , S3 , and S4 to prevent a short circuit due to the mutual electrical connection.
- a first adhesive portion 620 may be formed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may be an adhesive tape, but is not limited thereto.
- the first adhesive part 620 may be formed to attach the substrate part 630 to the reinforcing plate 610 .
- the first adhesive part 620 may include a plurality of open holes.
- the first adhesive part 620 may include a first open hole exposing a region to which the piezoelectric element 650 is to be attached among one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include a 1-1 open hole 621 exposing a region in which the 1-1 piezoelectric element 651a is to be disposed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include a 1-2 open hole 622 exposing a region in which the 1-2 piezoelectric element 651b is to be disposed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include a 1-3 open hole 623 exposing a region in which the 2-1 piezoelectric element 652a is to be disposed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include 1-4 th open holes 624 exposing a region where the 2-2 nd piezoelectric element 652b is to be disposed on one surface of the reinforcing plate 610 .
- the substrate part 630 may be attached on one surface of the reinforcing plate 610 through the first adhesive part 620 .
- the substrate part 630 may be electrically connected to the piezoelectric element 650 through solder parts S1 , S2 , S3 , and S4 .
- the substrate unit 630 may supply power to the piezoelectric element 650 connected through the solder units S1 , S2 , S3 , and S4 .
- the piezoelectric element 650 may undergo mechanical deformation such as expansion or contraction by the supplied power.
- the board unit 630 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), and a rigid flexible printed circuit board (Rigid Flexible PCB).
- a rigid printed circuit board Rigid PCB
- a flexible printed circuit board Flexible PCB
- Rigid Flexible PCB rigid flexible printed circuit board
- the substrate part 630 may be divided into a plurality of regions.
- the substrate 630 may include a first region 631 , a second region 632 , and a third region 633 .
- the first region 631 of the substrate part 630 may be a region facing the third side part 430 of the holder 400 .
- the first region 631 of the substrate part 630 may be a region disposed in the housing 100 .
- solder parts S1, S2, S3, and S4 are formed, and thus the piezoelectric element 650 is formed through the solder parts S1, S2, S3, and S4.
- a plurality of second open holes may be formed in the first region 631 of the substrate part 630 .
- the plurality of second open holes may correspond to the plurality of first open holes formed in the first adhesive part 620 .
- the plurality of second open holes may correspond to regions in which the piezoelectric element 650 is to be disposed.
- the first region 631 of the substrate part 630 corresponds to the 1-1 open hole 621 , and the 1-1 piezoelectric element 651a is disposed on one surface of the reinforcing plate 610 . It may include a 2-1 th open hole 631-1 exposing the to-be-prepared area.
- a first region 631 of the substrate part 630 corresponds to the 1-2 open hole 622 , and a region in which a 1-2 th piezoelectric element 651b is disposed among one surface of the reinforcing plate 610 . It may include a 2-2nd open hole 631 - 2 exposing the .
- the first region 631 of the substrate part 630 corresponds to the 1-3 th open hole 623 , and a region where the 2-1 th piezoelectric element 652a is disposed on one surface of the reinforcing plate 610 . It may include a 2-3-th open hole 631-3 exposing the .
- the first region 631 of the substrate part 630 corresponds to the 1-4th open hole 624 , and the 2-2nd piezoelectric element 652b is disposed on one surface of the reinforcing plate 610 .
- a 2-4th open hole 631-4 exposing the area may be included.
- the second region 632 of the substrate part 630 may be a region coupled to the housing 100 .
- the second region 632 of the substrate part 630 may be exposed to the outside of the housing 100 through the second open region 151 formed on the fifth side part 150 of the housing 100 .
- the housing 100 has a coupling protrusion 152 formed on the lower surface of the fifth side part 150 . It may include a coupling hole (632-1) fitted to the coupling.
- the substrate part 630 is disposed on the lower surface of the fifth side part 150 of the housing 100 in a state bent at 90 degrees with respect to the first region 631 , and accordingly the coupling protrusion 152 .
- the coupling hole 632-1 may be inserted into the to be coupled to the housing 100 .
- the third region 633 of the substrate part may connect the first region 631 and the second region 632 of the substrate part 630 .
- the third region 633 may be a bendable flexible region.
- the second adhesive part 640 may be formed on one surface of the reinforcing plate 610 in a region where the piezoelectric element 650 is to be disposed.
- the second adhesive part 640 may be formed on one surface of the reinforcing plate 610 exposed through the first open hole of the first adhesive part 620 and the second open hole of the substrate part 630 . can be formed in
- the second adhesive part 640 is formed on one surface of the reinforcing plate 610 exposed through the 1-1 open hole 621 and the 2-1 open hole 631-1.
- One adhesive member 641 may be included.
- the second adhesive part 640 is a second adhesive member formed on one surface of the reinforcing plate 610 exposed through the 1-2 open hole 622 and the 2-2 open hole 631-2. (642).
- the second adhesive part 640 is a third adhesive member formed on one surface of the reinforcing plate 610 exposed through the 1-3 open hole 623 and the 2-3rd open hole 631-3. (643).
- the second adhesive part 640 is a fourth adhesive member formed on one surface of the reinforcing plate 610 exposed through the 1-4th open hole 624 and the 2-4th open hole 631-4. (644).
- the piezoelectric element 650 may be attached to one surface of the reinforcing plate 610 through the second adhesive part 640 . Also, the piezoelectric element 650 may be electrically connected to the substrate unit 630 through the solder units S1 , S2 , S3 , and S4 .
- the piezoelectric element 650 may be disposed in direct or indirect contact with the prism mover 300a.
- the piezoelectric element 650 may be disposed in direct contact with the first and second protrusions 331 and 332 formed on the outer surface of the third side portion 330 of the prism mover 300a.
- the piezoelectric element 650 may include a material that causes mechanical deformation by the applied power.
- the piezoelectric element 650 may include a piezo-electric device.
- the piezoelectric element 650 may include a ceramic material.
- the piezoelectric element 650 may include ZnO, AlN, LiNbO 4 , lead antimony stannate, lead magnesium tantalate, lead nickel tantalate, or titanate ( titanates), tungstates, zirconates, or lead zirconate titanate [Pb(Zr x Ti 1-x )O 3 (PZT)], lead lanthanum zirconate titanate (PLZT), lead niobium Niobium of lead, barium, bismuth, or strontium, including zirconate titanate (PNZT), BaTiO 3 , SrTiO 3 , lead magnesium niobate, lead nickel niobate, lead manganese niobate, lead zinc ni
- the driving unit 600 may include a plurality of piezoelectric elements 650 .
- the plurality of piezoelectric elements 650 may include a first piezoelectric element 651 and a second piezoelectric element 652 .
- the first piezoelectric element 651 and the second piezoelectric element 652 may be respectively disposed in the open holes of the substrate part 630 and the first adhesive part 620 .
- the first piezoelectric element 651 and the second piezoelectric element 652 may be attached to one surface of the reinforcing plate 610 through a second adhesive part 640 .
- the first piezoelectric element 651 may include a 1-1 piezoelectric element 651a and a 1-2 th piezoelectric element 651b that are spaced apart from each other in the vertical direction, the y-axis direction, or the second direction.
- the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b may be disposed to be spaced apart from each other in the second direction.
- the first piezoelectric element 651 may be disposed in one direction with respect to the center of the prism part 300 .
- the second piezoelectric element 652 may include a 2-1 th piezoelectric element 652a and a 2-2 th piezoelectric element 652b spaced apart from each other in the left-right direction, the x-axis direction, or the first direction.
- the second piezoelectric element 652 may be disposed in a direction different from the one direction with respect to the center of the prism part 300 .
- the one direction and the other direction may be perpendicular to the center of the prism part 300 .
- the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b may have the same shape and height.
- the second-first piezoelectric element 652a and the second-second piezoelectric element 652b may have the same shape and height.
- the 1-1 piezoelectric element 651a, the 1-2 piezoelectric element 651b, the 2-1 piezoelectric element 652a, and the 2-2 piezoelectric element 652b may have the same height. .
- the 1-1 piezoelectric element 651a may be electrically connected to the substrate unit 630 through the first solder unit S1 .
- the 1-2-th piezoelectric element 651b may be electrically connected to the substrate part 630 through the second solder part S2 .
- the 2-1 piezoelectric element 652a may be electrically connected to the substrate unit 630 through the third solder unit S3 .
- the 2-2nd piezoelectric element 652b may be electrically connected to the substrate part 630 through the fourth solder part S4 .
- a part or all of the piezoelectric element 650 may be disposed in a holder hole formed in the holder 400 .
- At least a part of the 1-1 piezoelectric element 651a is inserted into the 1-1 holder hole 431a of the holder 400 to make contact with the 1-1 protrusion 331a of the prism mover 300a.
- At least a part of the 1-2 th piezoelectric element 651b is inserted into the 1-2 th holder hole 431b of the holder 400 to be in contact with the 1-2 th protrusion 331b of the prism mover 300a. there is.
- At least a part of the 2-1 piezoelectric element 652a may be inserted into the 2-1 holder hole 432a of the holder 400 to contact the 2-1 protrusion 332a of the prism mover 300a. there is.
- At least a portion of the 2-2 piezoelectric element 652b is inserted into the 2-2 holder hole 432b of the holder 400 to contact the 2-2 protrusion 332b of the prism mover 300a. there is.
- a method of manufacturing the driving unit 600 will be described as follows.
- a reinforcement plate 610 which is a basic material of the driving unit 600, is prepared.
- the prepared reinforcing plate 610 may be anodized aluminum, but is not limited thereto.
- the reinforcing plate 610 may serve to support the piezoelectric element 650 in order to mount the piezoelectric element 650 on the substrate unit 630 .
- the first adhesive part 620 may be formed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may be an adhesive tape, but is not limited thereto.
- the first adhesive part 620 is preferably formed of a thermosetting tape.
- the first adhesive part 620 may include a first open hole exposing a region to which the piezoelectric element 650 is to be attached among one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include a 1-1 open hole 621 exposing a region in which the 1-1 piezoelectric element 651a is to be disposed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include a 1-2 open hole 622 exposing a region in which the 1-2 piezoelectric element 651b is to be disposed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include a 1-3 open hole 623 exposing a region in which the 2-1 piezoelectric element 652a is to be disposed on one surface of the reinforcing plate 610 .
- the first adhesive part 620 may include 1-4 th open holes 624 exposing a region where the 2-2 nd piezoelectric element 652b is to be disposed on one surface of the reinforcing plate 610 .
- the substrate part 630 may be attached to one surface of the reinforcing plate 610 through the first adhesive part 620 .
- the substrate part 630 may be divided into a plurality of regions. Specifically, the substrate 630 may include a first region 631 , a second region 632 , and a third region 633 .
- a plurality of second open holes may be formed in the first region 631 of the substrate part 630 .
- the first region 631 of the substrate part 630 corresponds to the 1-1 open hole 621 , and a 1-1 piezoelectric element 651a of one surface of the reinforcing plate 610 . It may include a 2-1 th open hole 631-1 exposing an area to be disposed.
- a first region 631 of the substrate part 630 corresponds to the 1-2 open hole 622 , and a region in which a 1-2 th piezoelectric element 651b is disposed among one surface of the reinforcing plate 610 . It may include a 2-2nd open hole 631 - 2 exposing the .
- the first region 631 of the substrate part 630 corresponds to the 1-3 th open hole 623 , and a region where the 2-1 th piezoelectric element 652a is disposed on one surface of the reinforcing plate 610 . It may include a 2-3-th open hole 631-3 exposing the .
- the first region 631 of the substrate part 630 corresponds to the 1-4th open hole 624 , and the 2-2nd piezoelectric element 652b is disposed on one surface of the reinforcing plate 610 .
- a 2-4th open hole 631-4 exposing the area may be included.
- the second adhesive part 640 may be formed in a region where the piezoelectric element 650 is to be disposed on one surface of the reinforcing plate 610 .
- the second adhesive part 640 may be formed on one surface of the reinforcing plate 610 exposed through the first open hole of the first adhesive part 620 and the second open hole of the substrate part 630 . can be formed in
- the second adhesive part 640 is formed on one surface of the reinforcing plate 610 exposed through the 1-1 open hole 621 and the 2-1 open hole 631-1.
- One adhesive member 641 may be included.
- the second adhesive part 640 is a second adhesive member formed on one surface of the reinforcing plate 610 exposed through the 1-2 open hole 622 and the 2-2 open hole 631-2. (642).
- the second adhesive part 640 is a third adhesive member formed on one surface of the reinforcing plate 610 exposed through the 1-3 open hole 623 and the 2-3rd open hole 631-3. (643).
- the second adhesive part 640 is a fourth adhesive member formed on one surface of the reinforcing plate 610 exposed through the 1-4th open hole 624 and the 2-4th open hole 631-4. (644).
- the embodiment may proceed with a process of attaching the piezoelectric element 650 on the second adhesive portion 640 . Thereafter, the embodiment may perform a soldering process for electrically connecting the piezoelectric element 650 and the substrate unit 630 through the solder units S1 , S2 , S3 , and S4 .
- 17 is an exemplary diagram illustrating an operation of a driving unit of a first camera actuator according to an embodiment.
- the piezoelectric element 650 may be mechanically deformed by applied power.
- the piezoelectric element 650 may expand or contract when a set power is applied.
- the piezoelectric element 650 may expand toward one side of the prism part 300 or contract in the opposite direction.
- the piezoelectric element 650 may expand or contract in an optical axis direction.
- the piezoelectric element 650 may tilt the prism part 300 .
- the piezoelectric element 650 may control the tilting of the prism unit 300 along a first axis or a second axis by applied power.
- the prism 300b may be tilted along the first axis on the prism mover 300a.
- the prism part 300 may be rotated and moved in the left-right direction (refer to FIG. 17 ) with the first line L1 as an axis by the piezoelectric element 650 .
- the prism part 300 may be rotated in the vertical direction (y-axis direction) by the second piezoelectric element 652 .
- the 2-1 piezoelectric element 652a may expand by applied power.
- the 2-2 piezoelectric element 652b may be contracted by the applied power or maintain a set shape because no power is applied. Accordingly, the prism part 300 may be tilted in the right direction (refer to FIG. 17 ) with respect to the first line L1 as an axis by the mechanical deformation of the 2-1 piezoelectric element 652a.
- the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b constituting the first piezoelectric element 651 deformation may not occur.
- the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b may be deformed by a predetermined power applied to provide a driving force for tilting the prism part 300 in the right direction. there is.
- the second-second piezoelectric element 652b may expand by applied power.
- the 2-1 piezoelectric element 652a may be contracted by an applied power or maintain a set shape because no power is applied.
- the prism part 300 may be tilted in a left direction (refer to FIG. 17 ) about the first line L1 as an axis by mechanical deformation of the piezoelectric element 650 .
- the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b constituting the first piezoelectric element 651 since power is not applied to the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b constituting the first piezoelectric element 651, deformation may not occur.
- the 1-1 piezoelectric element 651a and the 1-2 th piezoelectric element 651b may be deformed by a predetermined power applied to provide a driving force for tilting the prism part 300 in the left direction. there is.
- the prism part 300 may be tilted along the second axis.
- the prism part 300 may be rotated in the vertical direction (refer to FIG. 17 ) with the second line L2 as an axis by the piezoelectric element 650 .
- the prism 410 may be rotated in a left-right direction (x-axis direction) by at least one of the third piezoelectric element 533 and the fourth piezoelectric element 534 .
- the 1-1 piezoelectric element 651a may expand by applied power.
- the 1-2 first piezoelectric element 651b may be contracted by an applied power or maintain a set shape because no power is applied.
- the prism part 300 may be tilted in a downward direction (refer to FIG. 17 ) about the second line L2 as an axis by mechanical deformation of the piezoelectric element 650 .
- the 2-1 piezoelectric element 652a and the 2-2 piezoelectric element 652b are deformed by a predetermined power applied to provide a driving force for tilting the prism part 300 in the downward direction.
- the first-second piezoelectric element 651b may expand by applied power.
- the 1-1 piezoelectric element 651a may be contracted by an applied power or maintain a set shape because no power is applied.
- the prism part 300 may be tilted in an upward direction (refer to FIG. 17 ) about the second line L2 by mechanical deformation of the piezoelectric element 650 .
- the 2-1 piezoelectric element 652a and the 2-2 piezoelectric element 652b are deformed by a predetermined power applied to provide a driving force for tilting the prism part 300 upward.
- the camera module 10 may include one or a plurality of camera actuators.
- the camera module 10 may include the first camera actuator 1000 and the second camera actuator 2000 described above, and the first camera actuator 1000 and the second camera actuator 2000 . ) may include a cover case 15 to protect it.
- the first camera actuator 1000 may be an optical image stabilizer (OIS) actuator.
- OIS optical image stabilizer
- the light incident on the camera module 10 from the outside may be incident on the first camera actuator 1000 first.
- a path of the light incident on the first camera actuator 1000 may be changed to be incident on the second camera actuator 2000 .
- the light passing through the second camera actuator 2000 may be incident on the image sensor 2900 .
- the second camera actuator 2000 may be a zoom and/or auto focus actuator.
- the second camera actuator 2000 may include a plurality of lenses.
- the second camera actuator 2000 may perform a zoom or autofocus function by moving at least one lens in the optical axis direction according to a control signal from the controller.
- the second camera actuator 2000 will be described in more detail with reference to the drawings to be described later.
- FIG. 18 is a coupling diagram of a first camera actuator and a second camera actuator according to an embodiment
- FIG. 19 is an exploded perspective view of a first camera actuator and a second camera actuator according to an embodiment
- FIG. 20 is a second camera actuator according to the embodiment 2 is an exploded perspective view of the camera actuator
- FIG. 21 is a cross-sectional view of the second camera actuator according to the embodiment.
- FIG. 22 is a front view of the second camera actuator according to the embodiment
- FIG. 23 is a perspective view illustrating third and fourth driving units disposed in the housing in the second camera actuator according to the embodiment.
- FIG. 24 and 25 are exploded perspective views of the first and second driving units according to the embodiment
- FIG. 26 is a perspective view of a partial configuration of the second camera actuator according to the embodiment.
- the second camera actuator 2000 includes a second housing 2100 , a first lens unit 2105 , a first lens barrel 2200 , and a third driving unit 2300 .
- a second lens barrel 2400 , and a fourth driving unit 2500 may be included.
- the second housing 2100 may form an exterior of the second camera actuator 2000 .
- the second housing 2100 may have upper and lower partial regions open and may have a hexahedral shape.
- the second housing 2100 may include an accommodating space therein.
- the first lens barrel 2200 , the third driving unit 2300 , the second lens barrel 2400 , and the fourth driving unit 2500 may be accommodated in the accommodating space of the second housing 2100 .
- the second housing 2100 may include a first sub-housing 2110 and a second sub-housing 2120 .
- the first sub-housing 2110 may include a first hole 2111 .
- the first hole 2111 may be formed on one side of the first sub-housing 2110 .
- the first hole 2111 is a hollow hole and may be a hole passing through the outside and the inside of the first sub-housing 2110 .
- the first sub-housing 2110 may further include a second hole 2112 and a third hole 2113 .
- the second hole 2112 and the third hole 2113 may be disposed on one side of the first sub-housing 2110 .
- the second hole 2112 and the third hole 2113 may be hollow holes passing through the outside and the inside of the first sub-housing 2110 .
- the second hole 2112 and the third hole 2113 may be spaced apart from the first hole 2111 .
- the first hole 2111 may be disposed between the second hole 2112 and the third hole 2113 .
- the first hole 2111 may be disposed at equal intervals to the second hole 2112 and the third hole 2113 .
- the second hole 2112 may include a plurality of protrusions protruding from the inner circumferential surface of the second hole 2112 toward the center of the second hole 2112 .
- the plurality of protrusions may include a first protrusion 2112a disposed at an upper end of the second hole 2112 and a second protrusion 2112b disposed at a lower end of the second hole 2112 in the optical axis direction. ) may be included.
- the first protrusion 2112a may include a plurality of first sub-protrusions (not shown) spaced apart from each other.
- the plurality of first sub-protrusions may be arranged at equal intervals from the center of the second hole 2112 along a circumference of a concentric circle shape.
- the second protrusion 2112b may be spaced apart from the first protrusion 2112a in the optical axis direction.
- the second protrusion 2112b may be disposed below the first protrusion 2112a.
- the second protrusion 2112b may include a plurality of second sub-protrusions (not shown) spaced apart from each other.
- the plurality of second sub-protrusions may be arranged at equal intervals from the center of the second hole 2112 along a circumference of a concentric circle shape.
- the first protrusion 2112a and the second protrusion 2112b may provide a space in which a portion of the third driving unit 2300 to be described later, for example, the first buffer member 2321 is disposed.
- the third hole 2113 may include a plurality of protrusions protruding from the inner circumferential surface of the third hole 2113 toward the center of the third hole 2113 .
- the plurality of protrusions may include a third protrusion 2113a disposed at an upper end of the third hole 2113 and a fourth protrusion 2113b disposed at a lower end of the second hole 2112 with respect to the optical axis direction.
- the third protrusion 2113a may include a plurality of third sub-protrusions (not shown) spaced apart from each other.
- the plurality of third sub-protrusions may be disposed at equal intervals from the center of the third hole 2113 along a circumference of a concentric circle shape.
- the fourth protrusion 2113b may be spaced apart from the third protrusion 2113a in the optical axis direction.
- the fourth protrusion 2113b may include a plurality of fourth sub-protrusions (not shown) spaced apart from each other.
- the plurality of fourth sub-protrusions may be arranged at equal intervals from the center of the third hole 2113 along a circumference of a concentric circle shape.
- the third protrusion 2113a and the fourth protrusion 2113b may provide a space in which a portion of the fourth driving unit 2500 to be described later, for example, a third buffer member 2521 is disposed.
- the second sub-housing 2120 may be disposed under the first sub-housing 2110 .
- the second sub-housing 2120 may be disposed under the first sub-housing 2110 in a third direction (z-axis, optical-axis direction).
- the second sub-housing 2120 may be disposed closer to an image sensor 2900 to be described later than the first sub-housing 2110 .
- the first lens barrel 2200 , the third driving unit 2300 , the second lens barrel 2400 , and the fourth driving unit 2500 may be disposed in the second sub-housing 2120 .
- the second sub-housing 2120 may be coupled to the first sub-housing 2110 .
- the first sub-housing 2110 and the second sub-housing 2120 may be coupled by a separate fastening member (not shown) such as a screw.
- the first sub-housing 2110 and the second sub-housing 2120 may be coupled to each other by physical coupling of the formed coupling jaws and coupling grooves, respectively.
- the first lens unit 2105 is disposed in the second housing 2100 and may include at least one lens.
- the first lens unit 2105 may be disposed in the first sub-housing 2110 .
- the first lens unit 2105 may be disposed in the first hole 2111 of the first sub-housing 2110 .
- the first lens unit 2105 may be coupled to the first sub-housing 2110 by a thread formed on an inner circumferential surface of the first hole 2111 .
- the first lens barrel 2200 may be disposed in the second housing 2100 .
- the first lens barrel 2200 may be disposed in the second sub-housing 2120 .
- the first lens barrel 2200 may be disposed under the first lens unit 2105 .
- the first lens barrel 2200 may be disposed below the first lens unit 2105 in the optical axis direction, and is closer to the image sensor 2900 than the first lens unit 2105 . can do.
- the first lens barrel 2200 may be coupled to the third driving unit 2300 .
- the first lens barrel 2200 may move in the second housing 2100 by the third driving unit 2300 .
- the first lens barrel 2200 may be moved in the optical axis direction by the third driving unit 2300 .
- the first lens barrel 2200 may include a first barrel part 2210 , a second lens part 2205 , a first guide part 2220 , and a first elastic part 2230 .
- the first barrel part 2210 may be disposed in a region overlapping the optical axis and may have an open shape on one surface and the other surface.
- the first barrel part 2210 may have a cylindrical shape with one surface and the other surface open.
- the first barrel part 2210 may include the first through hole 2211 .
- the first through hole 2211 may be a through hole penetrating through one surface and the other surface of the first barrel part 2210 .
- one surface of the first barrel part 2210 may be a surface facing the first lens unit 2105
- the other surface may be a surface opposite to the one surface and facing the image sensor 2900 .
- the second lens unit 2205 may be disposed on the first barrel unit 2210 .
- the second lens unit 2205 may be disposed in the first through hole 2211 .
- a screw line may be formed on an inner circumferential surface of the first through hole 2211 , and the second lens unit 2205 may be coupled to the first barrel unit 2210 by the screw line.
- the second lens unit 2205 may include at least one lens.
- the second lens unit 2205 may perform a zoom function.
- the second lens unit 2205 may move in the optical axis direction.
- the second lens unit 2205 may move in the optical axis direction with respect to the first lens unit 2105 .
- the first guide part 2220 may extend outwardly from the first barrel part 2210 .
- the first guide part 2220 may extend from the first barrel part 2210 in a direction perpendicular to the optical axis, for example, in a first direction (x-axis direction).
- the first guide part 2220 may include a first upper surface 2221 , a first side surface 2222 , and a first lower surface 2223 .
- the first upper surface 2221 may face an inner upper surface of the second housing 2100 .
- the first upper surface 2221 may face the inner upper surface of the second housing 2100 in the second direction (y-axis direction).
- the first upper surface 2221 may include a plurality of sub upper surfaces.
- the first upper surface 2221 is the first sub upper surface 2221a and a second sub upper surface 2221b that is disposed lower in the second direction (y-axis direction) than the first sub upper surface 2221a.
- At least one first fastening protrusion (not shown) may be disposed on the second sub upper surface 2221b.
- the first fastening protrusion may have a shape protruding upward on the second sub upper surface 2221b.
- the first fastening protrusion may be inserted into a first fixing groove (not shown) formed in a first elastic part 2230 to be described later.
- the first upper surface 2221 may include a first stepped surface 2225 disposed between the first sub upper surface 2221a and the second sub upper surface 2221b.
- the first stepped surface 2225 may be connected to the ends of the first sub upper surface 2221a and the second sub upper surface 2221b.
- the first stepped surface 2225 may be defined as the first stepped portion 2225 . That is, the first upper surface 2221 may include the first sub upper surface 2221a, the second sub upper surface 2221b, and the first stepped portion 2225, and may have a stepped structure.
- the first lower surface 2223 may face an inner lower surface of the second housing 2100 to be described later.
- a first groove 223h1 may be disposed on the first lower surface 2223 .
- the first groove 223h1 may have a concave shape in a direction from the first lower surface 2223 to the first upper surface 2221 .
- a first magnetic scaler 2610 which will be described later, may be disposed in the first groove 223h1.
- a second groove 2223h2 may be disposed on the first lower surface 2223 .
- the second groove 2223h2 may be spaced apart from the first groove 223h1 .
- the second groove 2223h2 may be disposed in an edge region of the first lower surface 2223 .
- the second groove 2223h2 may provide a region in which a portion of the first elastic part 2230, which will be described later, is disposed.
- the second groove 2223h2 may provide a region in which the first elastic part 2230 is mounted and fixed.
- the first side surface 2222 may be disposed between the first upper surface 2221 and the first lower surface 2223 .
- the first side surface 2222 may be a surface connecting the first upper surface 2221 and the first lower surface 2223 .
- the first side surface 2222 may be a surface connecting the second sub upper surface 2221b and the first lower surface 2223 .
- the first side surface 2222 may face a second inner surface of the second sub-housing 2120 to be described later.
- a first recess 2222h may be disposed on the first side surface 2222 .
- the first recess 2222h may have a concave shape in a direction from the first side surface 2222 to the first barrel part 2210 .
- the first recess 2222h may have a groove shape extending in the optical axis direction (z-axis direction).
- the first recess 2222h may have a V-shape when viewed from the front.
- the first guide part 2220 may include a first insertion hole 2220h1.
- the first insertion hole 2220h1 may be a hole passing through one surface and the other surface of the first guide part 2220 .
- one surface of the first guide part 2220 may be a surface facing the first lens unit 2105
- the other surface may be a surface opposite to the one surface and facing the image sensor 2900 .
- a first pin 2250 may be disposed in the first insertion hole 2220h1 .
- the first pin 2250 may be disposed to pass through the first insertion hole 2220h1.
- the first fin 2250 may have a shape extending in the optical axis direction (z-axis direction), and may have a longer optical axis direction than the first lens barrel 2200 .
- the first pin 2250 may be coupled to at least one of the first sub-housing 2110 and the second sub-housing 2120 .
- the first lens barrel 2200 may move the first pin 2250 as a movement axis in the optical axis direction. Through this, the second lens unit 2205 disposed in the first lens barrel 2200 may perform a zoom function and/or an autofocus function.
- the first elastic part 2230 may be disposed on the first guide part 2220 .
- the first elastic part 2230 may be disposed on the first upper surface 2221 , the first lower surface 2223 , and the first side surface 2222 of the first guide part 2220 .
- the first elastic part 2230 may be coupled to the first guide part 2220 .
- the first elastic part 2230 may include a first elastic member 2231 and a second elastic member 2232 .
- the first elastic member 2231 may be coupled to the first guide part 2220 .
- the first elastic member 2231 may be disposed at a set position on the first side surface 2222 .
- the first elastic member 2231 may have a shape corresponding to the first side surface 2222 .
- the first elastic member 2231 may include a first area 2231a, a second area 2231b, and a third area 2231c.
- the first area 2231a and the second area 2231b may be disposed on the first side surface 2222 of the first guide part 2220 and may be spaced apart from each other.
- the first area 2231a and the second area 2231b may be disposed on an area of the first side surface 2222 in which the first recess 2222h is not disposed.
- the third area 2231c may be disposed between the first area 2231a and the second area 2231b to connect the two areas 2231a and 2231b.
- the third region 2231c may be disposed in a region corresponding to the first recess 2222h.
- the third region 2231c may have a V-shape corresponding to the first recess 2222h.
- the second elastic member 2232 may be disposed on the first guide part 2220 .
- the second elastic member 2232 may be coupled to the first guide part 2220 .
- the second elastic member 2232 may include a fourth region 2232a, a fifth region 2232b, and a sixth region 2232c.
- the fourth region 2232a may be disposed on the first upper surface 2221 of the first guide part 2220 .
- the fourth region 2232a may be disposed on the second sub upper surface 2221b of the first guide part 2220 .
- the fourth region may include a first fixing groove (not shown).
- the first fixing groove may be disposed in a region corresponding to the first fastening protrusion, and may have a shape corresponding to the first fastening protrusion.
- the fifth region 2232b may be connected to the fourth region 2232a.
- the fifth region 2232b may be bent at one end of the fourth region 2232a and disposed on the first side surface 2222 of the first guide part 2220 .
- the fifth region 2232b may be disposed on the first elastic member 2231 .
- the fifth area 2232b may be parallel to the first area 2231a and the second area 2231b.
- the fifth region 2232b may be disposed to cover the first elastic member 2231 .
- the sixth region 2232c may be connected to the fifth region 2232b.
- the sixth region 2232c may be bent at one end of the fifth region 2232b and disposed on the first lower surface 2223 of the first guide part 2220 .
- a portion of the sixth region 2232c may be inserted into the second groove 2223h2 disposed on the first lower surface 2223 .
- a first fixing groove formed in the fourth region 2232a is coupled to the first fastening protrusion, and the sixth region 2232c is inserted into the second groove 2223h2 . to be physically coupled to the first guide part 2220 . Accordingly, the first elastic part 2230 may maintain a state firmly coupled to the first guide part 2220 .
- the first lens barrel 2200 may further include a first guide groove 2210h1.
- the first guide groove 2210h1 may be disposed in an area extending outwardly from the first barrel part 2210 .
- the first guide groove 2210h1 may be disposed in a region corresponding to a second pin 2450 to be described later.
- the first guide groove 2210h1 may provide a space into which the second pin 2450 is inserted.
- the first lens barrel 2200 may move in the optical axis direction by the first fin 2250 and the second fin 2450 .
- the first guide groove 2210h1 may have an open shape at one side.
- the first guide groove 2210h1 may have an open shape at one side facing the first inner surface of the second housing 2100 . Accordingly, friction and vibration generated when the first lens barrel 2200 is moved by the third driving unit 2300 may be minimized.
- the second camera actuator 2000 may include a third driving unit 2300 .
- the third driving unit 2300 may be disposed in the second housing 2100 .
- the third driving unit 2300 may be coupled to the first lens barrel 2200 .
- the third driving unit 2300 may move the first lens barrel 2200 in the optical axis direction (z-axis direction).
- the third driving unit 2300 may include a first piezoelectric element 2310 , a first extension bar 2320 , a first buffer member 2321 , and a second buffer member 2322 .
- the first piezoelectric element 2310 may include a piezo-electric device.
- the first piezoelectric element 2310 may include a material that causes mechanical deformation by applied power.
- the first piezoelectric element 2310 may contract or expand by applied power and may cause mechanical deformation in a set direction.
- the first piezoelectric element 2310 may generate vibration while causing mechanical deformation in the optical axis direction (z-axis direction) by the applied power.
- the first piezoelectric element 2310 may include a first disk part 2311 and a first protrusion part 2512 .
- the first disk part 2311 may have a plate shape and may be disposed on the second hole 2112 .
- the first disk part 2311 may be disposed on the first protrusion 2112a of the second hole 2112 .
- the first disk part 2311 may be disposed on the plurality of first sub-protrusions.
- the first protrusion 2112a may support the first disk part 2311 .
- the first protrusion 2512 may be disposed under the first disk part 2311 .
- the first protrusion 2512 may be disposed below the first circular plate 2311 in the third direction (z-axis direction) and be connected to the first circular plate 2311 .
- a partial region of the first protrusion 2512 may be disposed in the second hole 2112 .
- the first protrusion 2512 may have a shape protruding toward the image sensor 2900 .
- the width (x-axis, y-axis direction) of the first protrusion 2512 may change toward the optical axis direction. For example, the width of the first protrusion 2512 may decrease as it approaches the image sensor 2900 .
- the first extension bar 2320 may extend in the optical axis direction.
- the first extension bar 2320 may be disposed parallel to the optical axis and may be connected to the first piezoelectric element 2310 .
- an upper end of the first extension bar 2320 may be connected to the first protrusion 2512 .
- the lower end of the first extension bar 2320 may be inserted into the lower end of the second housing 2100 , for example, a fourth hole (not shown) formed at the lower end of the second sub-housing 2120 .
- first extension bar 2320 may be connected to the first lens barrel 2200 .
- the first extension bar 2320 may be connected to the first lens barrel 2200 by the first elastic part 2230 .
- the first extension bar 2320 may be disposed between the first elastic member 2231 and the second elastic member 2232 .
- the first extension bar 2320 may be disposed between the third region 2231c of the first elastic member 2231 and the fifth region 2232b of the second elastic member 2232 .
- the first extension bar 2320 may be fixed by the elastic force of the first elastic member 2231 and the second elastic member 2232 .
- the first extension bar 2320 may transmit the vibration generated by the first piezoelectric element 2310 to the first lens barrel 2200 .
- the first lens barrel 2200 may move upward or downward (z-axis direction, optical-axis direction) according to the vibration direction of the first extension bar 2320 .
- the second lens unit 2205 in the first lens barrel 2200 may move to perform a zooming function of zooming up or out.
- the first buffer member 2321 may be disposed on the first extension bar 2320 .
- the first buffer member 2321 may be disposed on an upper region of the first extension bar 2320 .
- the first buffer member 2321 may be disposed in the second hole 2112 of the second housing 2100 .
- the first buffer member 2321 may be disposed between the first protrusion 2112a and the second protrusion 2112b of the second hole 2112 .
- the first buffer member 2321 may be fixed to a position set by the first protrusion 2112a and the second protrusion 2112b.
- the first buffer member 2321 may include a through hole into which the first extension bar 2320 is inserted.
- the second buffer member 2322 may be disposed on the first extension bar 2320 .
- the second buffer member 2322 may be disposed on a lower region of the first extension bar 2320 .
- the second buffer member 2322 may be spaced apart from the first buffer member 2321 in the optical axis direction.
- the second buffer member 2322 may be disposed in a fourth hole (not shown) of the second housing 2100 .
- the second buffer member 2322 may be disposed to be inserted into the fourth hole.
- the second buffer member 2322 may include a through hole into which the first extension bar 2320 is inserted.
- the first buffer member 2321 and the second buffer member 2322 may prevent noise caused by the vibration of the first extension bar 2320 .
- the first buffer member 2321 and the second buffer member 2322 may prevent the first extension bar 2320 from being deformed or damaged by an external impact.
- the second lens barrel 2400 may be disposed in the second housing 2100 .
- the second lens barrel 2400 may be disposed in the second sub-housing 2120 .
- the second lens barrel 2400 may be disposed under the first lens barrel 2200 .
- the second lens barrel 2400 may be disposed below the first lens barrel 2200 in the optical axis direction, and is closer to the image sensor 2900 than the first lens barrel 2200 . can do.
- the second lens barrel 2400 may be coupled to the fourth driving unit 2500 .
- the second lens barrel 2400 may move in the second housing 2100 by the fourth driving unit 2500 .
- the second lens barrel 2400 may be moved in the optical axis direction by the fourth driving unit 2500 .
- the second lens barrel 2400 may include a second barrel part 2410 , a third lens part 2405 , a second guide part 2420 , and a second elastic part 2430 .
- the second barrel part 2410 may be disposed in a region overlapping the optical axis and may have an open shape on one surface and the other surface.
- the second barrel part 2410 may have a cylindrical shape in which one surface and the other surface are open.
- the second barrel part 2410 may include the second through hole 2411 .
- the second through hole 2411 may be a through hole passing through one surface and the other surface of the second barrel part 2410 .
- one surface of the second barrel part 2410 may be a surface facing the first lens barrel 2200
- the other surface may be a surface opposite to the one surface and facing the image sensor 2900 .
- the third lens unit 2405 may be disposed on the second barrel unit 2410 .
- the third lens unit 2405 may be disposed in the second through hole 2411 .
- a screw line may be formed on the inner circumferential surface of the second through hole 2411 , and the third lens unit 2405 may be coupled to the second barrel unit 2410 by the screw line.
- the third lens unit 2405 may include at least one lens.
- the third lens unit 2405 may perform an auto focus function.
- the third lens unit 2405 may move in the optical axis direction.
- the third lens unit 2405 may move in the optical axis direction with respect to the first lens unit 2105 .
- the third lens unit 2405 may move separately from the second lens unit 2205 .
- the distance at which the third lens unit 2405 can move in the optical axis direction may be the same as or different from that of the second lens unit 2205 .
- the second guide part 2420 may extend outwardly from the second barrel part 2410 .
- the second guide part 2420 may extend from the second barrel part 2410 in a direction perpendicular to the optical axis, for example, in a first direction (x-axis direction).
- the second guide part 2420 may extend in a direction opposite to the first guide part 2220 .
- the first guide part 2220 may extend from the first barrel part 2210 in the +x-axis direction
- the second guide part 2420 may extend from the second barrel part 2410 . It can extend in the -x-axis direction.
- the second guide part 2420 may include a second lower surface 2421 , a second side surface 2422 , and a second upper surface 2423 .
- the second upper surface 2423 may face an inner upper surface of the second housing 2100 .
- the second upper surface 2423 may face the inner upper surface of the second housing 2100 in the second direction (y-axis direction).
- a third groove 2423h1 may be disposed on the second upper surface 2423 .
- the third groove 2423h1 may have a concave shape in a direction from the second upper surface 2423 to the second lower surface 2421 .
- a second magnetic scaler 2620 which will be described later, may be disposed in the third groove 2423h1.
- a fourth groove 2423h2 may be disposed on the second upper surface 2423 .
- the fourth groove 2423h2 may be spaced apart from the third groove 2423h1 .
- the fourth groove 2423h2 may be disposed in an edge region of the second upper surface 2423 .
- the fourth groove 2423h2 may provide a region in which a portion of the second elastic part 2430, which will be described later, is disposed.
- the fourth groove 2423h2 may provide a region in which the second elastic part 2430 is mounted and fixed.
- the second lower surface 2421 may face an inner lower surface of the second housing 2100 .
- the second lower surface 2421 may face the inner lower surface of the second housing 2100 in the second direction (y-axis direction).
- the second lower surface 2421 may include a plurality of sub lower surfaces.
- the second lower surface 2421 is a second sub lower surface 2421b disposed above the first sub lower surface 2421a and the first sub lower surface 2421a in the second direction (y-axis direction) than the second sub lower surface 2421b.
- At least one second fastening protrusion (not shown) may be disposed on the second sub lower surface 2421b.
- the second fastening protrusion may have a shape protruding downward from the second sub-lower surface 2421b.
- the second fastening protrusion may be inserted into a second fixing groove (not shown) formed in a second elastic part 2430 to be described later.
- the second lower surface 2421 may include a second stepped surface 2425 disposed between the first sub lower surface 2421a and the second sub lower surface 2421b.
- the second stepped surface 2425 may be connected to ends of the first sub lower surface 2421a and the second sub lower surface 2421b.
- the second stepped surface 2425 may be defined as the second stepped portion 2425 . That is, the second lower surface 2421 may include the first sub lower surface 2421a, the second sub lower surface 2421b, and the second stepped portion 2425 and may have a stepped structure.
- the second side surface 2422 may be disposed between the second upper surface 2423 and the second lower surface 2421 .
- the second side surface 2422 may be a surface connecting the second upper surface 2423 and the second lower surface 2421 .
- the second side surface 2422 may be a surface connecting the second sub lower surface 2421b and the second upper surface 2423 .
- the second side surface 2422 may face a first inner surface of the second sub-housing 2120 to be described later.
- a second recess 2422h may be disposed on the second side surface 2422 .
- the second recess 2422h may have a concave shape from the second side surface 2422 toward the second barrel part 2410 .
- the second recess 2422h may have a groove shape extending in the optical axis direction (z-axis direction).
- the second recess 2422h may have a V-shape when viewed from the front.
- the second guide part 2420 may include a second insertion hole 2420h1 .
- the second insertion hole 2420h1 may be a hole passing through one surface and the other surface of the second guide part 2420 .
- one surface of the second guide part 2420 may be a surface facing the first lens barrel 2200
- the other surface may be a surface opposite to the one surface and facing the image sensor 2900 .
- a second pin 2450 may be disposed in the second insertion hole 2420h1 .
- the second pin 2450 may be disposed to pass through the second insertion hole 2420h1.
- the second fin 2450 may have a shape extending in the optical axis direction (z-axis direction).
- the second fin 2450 may be spaced apart from the first fin 2250 and may be parallel to the first fin 2250 .
- the second fin 2450 may have a length in the optical axis direction longer than that of the second lens barrel 2400 .
- the second pin 2450 may be coupled to at least one of the first sub-housing 2110 and the second sub-housing 2120 .
- the second lens barrel 2400 may move the second pin 2450 as a movement axis in the optical axis direction.
- the third lens unit 2405 disposed in the second lens barrel 2400 may perform a zoom function and/or an autofocus function.
- the second elastic part 2430 may be disposed on the second guide part 2420 .
- the second elastic part 2430 may be disposed on the second upper surface 2423 , the second lower surface 2421 , and the second side surface 2422 of the second guide part 2420 .
- the second elastic part 2430 may be coupled to the second guide part 2420 .
- the second elastic part 2430 may include a third elastic member 2431 and a fourth elastic member 2432 .
- the third elastic member 2431 may be coupled to the second guide part 2420 .
- the third elastic member 2431 may be disposed at a set position on the second side surface 2422 .
- the third elastic member 2431 may have a shape corresponding to the second side surface 2422 .
- the third elastic member 2431 may include a seventh area 2431a, an eighth area 2431b, and a ninth area 2431c.
- the seventh area 2431a and the eighth area 2431b may be disposed on the second side surface 2422 of the second guide part 2420 and may be spaced apart from each other.
- the seventh area 2431a and the eighth area 2431b may be disposed on an area of the second side surface 2422 in which the second recess 2422h is not disposed.
- the ninth area 2431c may be disposed between the first area 2231a and the second area 2231b to connect the two areas 2431a and 2431b.
- the ninth area 2431c may be disposed in an area corresponding to the second recess 2422h.
- the ninth region 2431c may have a V-shape corresponding to the second recess 2422h.
- the fourth elastic member 2432 may be disposed on the second guide part 2420 .
- the fourth elastic member 2432 may be coupled to the second guide part 2420 .
- the fourth elastic member 2432 may include a tenth region 2432a, an eleventh region 2432b, and a twelfth region 2432c.
- the tenth area 2432a may be disposed on the second lower surface 2421 of the second guide part 2420 .
- the tenth area 2432a may be disposed on the second sub lower surface 2421b of the second guide part 2420 .
- the tenth region 2431a may include a second fixing groove (not shown).
- the second fixing groove may be disposed in a region corresponding to the second fastening protrusion, and may have a shape corresponding to the second fastening protrusion.
- the eleventh region 2432b may be connected to the tenth region 2432a.
- the eleventh region 2432b may be bent at one end of the tenth region 2432a and disposed on the second side surface 2422 of the second guide part 2420 .
- the eleventh region 2432b may be disposed on the third elastic member 2431 .
- the eleventh area 2432b may be parallel to the seventh area 2431a and the eighth area 2431b.
- the eleventh region 2432b may be disposed to cover the third elastic member 2431 .
- the twelfth region 2432c may be connected to the eleventh region 2432b.
- the twelfth region 2432c may be bent at one end of the eleventh region 2432b and disposed on the second upper surface 2423 of the second guide part 2420 .
- a portion of the twelfth region 2432c may be inserted into the fourth groove 2423h2 disposed on the second upper surface 2423 .
- a second fixing groove formed in the seventh region 2431a is coupled to the second fastening protrusion, and the twelfth region 2432c is inserted into the fourth groove 2423h2 . to be physically coupled to the second guide part 2420 . Accordingly, the second elastic part 2430 may maintain a state firmly coupled to the second guide part 2420 .
- the second lens barrel 2400 may further include a second guide groove 2410h1.
- the second guide groove 2410h1 may be disposed in an area extending outwardly from the second barrel part 2410 .
- the second guide groove 2410h1 may be disposed in a region corresponding to the first pin 2250 .
- the second guide groove 2410h1 may provide a space into which the first pin 2250 is inserted.
- the second lens barrel 2400 may move in the optical axis direction by the first fin 2250 and the second fin 2450 .
- the second guide groove 2410h1 may have an open shape at one side.
- the second guide groove 2410h1 may have an open shape at one side facing the second inner surface of the second housing 2100 . Accordingly, friction and vibration generated when the second lens barrel 2400 is moved by the fourth driving unit 2500 can be minimized.
- the second camera actuator 2000 may include a fourth driving unit 2500 .
- the fourth driving unit 2500 may be disposed in the second housing 2100 .
- the fourth driving unit 2500 may be coupled to the second lens barrel 2400 .
- the fourth driving unit 2500 may move the second lens barrel 2400 in the optical axis direction (z-axis direction).
- the fourth driving unit 2500 may include a second piezoelectric element 2510 , a second extension part 2520 , a third buffer member 2521 , and a fourth buffer member 2522 .
- the second piezoelectric element 2510 may include a piezo-electric device.
- the second piezoelectric element 2510 may include a material that causes mechanical deformation by applied power.
- the second piezoelectric element 2510 may contract or expand by applied power and may cause mechanical deformation in a set direction.
- the second piezoelectric element 2510 may generate vibration while causing mechanical deformation in the optical axis direction (z-axis direction) by the applied power.
- the second piezoelectric element 2510 may include a second disk part 2511 and a second protrusion part 2512 .
- the second disk part 2511 has a plate shape and may be disposed on the third hole 2113 .
- the second disk part 2511 may be disposed on the third protrusion 2113a of the third hole 2113 .
- the second disk portion 2511 may be disposed on the plurality of third sub-protrusions.
- the third protrusion 2113a may support the second disc part 2511 .
- the second protrusion 2512 may be disposed under the second disk portion 2511 .
- the second protrusion 2512 may be disposed under the second disk portion 2511 in the third direction (z-axis direction) and be connected to the second disk portion 2511 .
- a partial region of the first protrusion 2512 may be disposed in the third hole 2113 .
- the second protrusion 2512 may have a shape protruding toward the image sensor 2900 .
- the width (x-axis, y-axis direction) of the second protrusion 2512 may change toward the optical axis direction. For example, the width of the second protrusion 2512 may decrease as it approaches the image sensor 2900 .
- the second extension 2520 may extend in the optical axis direction.
- the second extension 2520 may be disposed parallel to the optical axis and may be connected to the second piezoelectric element 2510 .
- an upper end of the second extension 2520 may be connected to the second protrusion 2512 .
- the lower end of the second extension 2520 may be inserted into the lower end of the second housing 2100 , for example, a fifth hole (not shown) formed at the lower end of the second sub-housing 2120 .
- one area of the second extension part 2520 may be connected to the second lens barrel 2400 .
- the second extension part 2520 may be connected to the second lens barrel 2400 by the second elastic part 2430 .
- the second extension part 2520 may be disposed between the third elastic member 2431 and the fourth elastic member 2432 .
- the second extension 2520 may be disposed between the ninth region 2431c of the third elastic member 2431 and the eleventh region 2432b of the fourth elastic member 2432 .
- the second extension 2520 may be fixed by the elastic force of the third elastic member 2431 and the fourth elastic member 2432 .
- the second extension 2520 may transmit the vibration generated by the second piezoelectric element 2510 to the second lens barrel 2400 .
- the second lens barrel 2400 may move upward or downward (z-axis direction, optical-axis direction) according to the vibration direction of the second extension part 2520 .
- the third lens unit 2405 in the second lens barrel 2400 may move to perform a zooming function of zooming up or zooming out.
- the third buffer member 2521 may be disposed on the second extension part 2520 .
- the third buffer member 2521 may be disposed on an upper region of the second extension part 2520 .
- the third buffer member 2521 may be disposed in the third hole 2113 of the second housing 2100 .
- the third buffer member 2521 may be disposed between the third protrusion 2113a and the fourth protrusion 2113b of the third hole 2113 .
- the third buffer member 2521 may be fixed to a position set by the third protrusion 2113a and the fourth protrusion 2113b.
- the third buffer member 2521 may include a through hole into which the second extension part 2520 is inserted.
- the fourth buffer member 2522 may be disposed on the second extension part 2520 .
- the fourth buffer member 2522 may be disposed on a lower region of the second extension part 2520 .
- the fourth buffer member 2522 may be spaced apart from the third buffer member 2521 in the optical axis direction.
- the fourth buffer member 2522 may be disposed in a fifth hole (not shown) of the second housing 2100 .
- the fourth buffer member 2522 may be disposed to be inserted into the fifth hole.
- the second buffer member 2322 may include a through hole into which the second extension part 2520 is inserted.
- the third buffer member 2521 and the fourth buffer member 2522 may prevent noise caused by vibration of the second extension part 2520 .
- the third buffer member 2521 and the fourth buffer member 2522 may prevent the second extension part 2520 from being deformed or damaged by an external impact.
- the second camera actuator 2000 may include a first magnetic scaler 2610 , a first sensing unit (not shown), a second magnetic scaler 2620 , and a second sensing unit (not shown).
- the first magnetic scaler 2610 may be disposed on the first lens barrel 2200 .
- the first magnetic scaler 2610 may be disposed on the first lower surface 2223 .
- the first magnetic scaler 2610 may be disposed in the first groove 223h1 of the first lens barrel 2200 .
- the first magnetic scaler 2610 may move along the optical axis direction together with the first lens barrel 2200 .
- the first magnetic scaler 2610 may include a plurality of magnets.
- the first magnetic scaler 2610 may have an N pole and an S pole alternately disposed in the optical axis direction.
- the first sensing unit may be disposed adjacent to the first magnetic scaler 2610 .
- the first sensing unit may be disposed to face the first magnetic scaler 2610 in a first direction (x-axis direction) or a second direction (y-axis direction).
- the first sensing unit may detect a position of the first magnetic scaler 2610 . Through this, the first sensing unit may detect the position and movement of the first lens barrel 2200 moving together with the first magnetic scaler 2610 .
- the second magnetic scaler 2620 may be disposed on the second lens barrel 2400 .
- the second magnetic scaler 2620 may be disposed on the second upper surface 2423 .
- the second magnetic scaler 2620 may be disposed in the third groove 2423h1 of the second lens barrel 2400 .
- the second magnetic scaler 2620 may move along the optical axis direction together with the second lens barrel 2400 .
- the second magnetic scaler 2620 may include a plurality of magnets.
- the second magnetic scaler 2620 may have an N pole and an S pole alternately disposed in the optical axis direction.
- the second sensing unit may be disposed adjacent to the second magnetic scaler 2620 .
- the second sensing unit may be disposed to face the second magnetic scaler 2620 in a first direction (x-axis direction) or a second direction (y-axis direction).
- the second sensing unit may detect a position of the second magnetic scaler 2620 . Through this, the second sensing unit may detect the position and movement of the second lens barrel 2400 moving together with the second magnetic scaler 2620 .
- the second camera actuator 2000 may further include a gyro sensor (not shown).
- the gyro sensor may be disposed in the second housing 2100 .
- the gyro sensor may detect a movement of a user using the camera actuator.
- the second camera actuator 2000 may include a second substrate 2800 .
- the second substrate 2800 may be disposed on the second housing 2100 .
- the second substrate 2800 may be disposed to surround a partial area of the second housing 2100 .
- the second substrate 2800 may be disposed to surround a portion of the outer side of the second sub-housing 2120 .
- the second substrate 2800 may provide power or current to components disposed in the second housing 2100 .
- the second board 2800 may be a circuit board, and may be electrically connected to a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), a rigid flexible printed circuit board (Rigid Flexible PCB), etc. It may include a circuit board having a wiring pattern.
- the second substrate 2800 may be electrically connected to the above-described first circuit board 310 .
- the second substrate 2800 may include a first end 2810 .
- the first end 2810 may be disposed on the first piezoelectric element 2310 of the third driving unit 2300 .
- the first end 2810 may be disposed on the first disk portion 2311 of the first piezoelectric element 2310 .
- the first end 2810 may be disposed on one surface of the first disk unit 2311 .
- the first end 2810 may be disposed on the second piezoelectric element 2510 of the fourth driving unit 2500 .
- the second end 2820 may be disposed on the second disk portion 2511 of the second piezoelectric element 2510 .
- the first end 2810 may be disposed on one surface of the second disk unit 2511 .
- the second substrate 2800 may include a second end 2820 .
- the first end 2810 may be spaced apart from the first end 2810 .
- the second end 2820 may be disposed in a region that does not overlap the first end 2810 in the optical axis direction.
- the second end 2820 may be disposed on the first piezoelectric element 2310 of the third driving unit 2300 .
- the second end 2820 may be disposed on the first disk portion 2311 of the first piezoelectric element 2310 .
- the first end 2810 may be disposed on the other surface opposite to one surface of the first disk part 2311 .
- the second end 2820 may be disposed on the second piezoelectric element 2510 of the fourth driving unit 2500 .
- the second end 2820 may be disposed on the second disk portion 2511 of the second piezoelectric element 2510 .
- the second end 2820 may be disposed on the other surface opposite to one surface of the second disk portion 2511 .
- the second substrate 2800 may supply power to the first piezoelectric element 2310 and the second piezoelectric element 2510 .
- the third driving unit 2300 and the fourth driving unit 2500 may drive the first lens barrel 2200 and the second lens barrel 2400 by the applied power, respectively.
- the second camera actuator 2000 includes a third driving unit 2300 and a fourth driving unit 2500 including a piezoelectric element, and the first and second lens barrels 2200 and 2400 .
- a third driving unit 2300 and a fourth driving unit 2500 including a piezoelectric element, and the first and second lens barrels 2200 and 2400 .
- the embodiment is not limited thereto, and the third and fourth driving units 2300 and 2500 may include a voice coli motor (VCM) or a shape memory alloy.
- VCM voice coli motor
- the third and fourth driving units 2300 and 2500 may move the first and second lens barrels 2200 and 2400 by using the electromagnetic force of the VCM or a physical change of the shape memory alloy.
- the second camera actuator 2000 may include an image sensor 2900 .
- the image sensor 2900 may collect light passing in the order of the first lens unit 2105 , the second lens unit 2205 , and the third lens unit 2405 and convert it into an image.
- the image sensor 2900 may be disposed so that the lenses of the lens units 105 , 205 , and 405 coincide with an optical axis.
- the optical axis of the image sensor 2900 and the optical axis of the lens may be aligned.
- FIG. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.
- the mobile terminal 3 may include a camera module 10 , an autofocus device 31 , and a flash module 33 provided on the rear side.
- the camera module 10 may include an image capturing function and an auto focus function.
- the camera module 10 may include an auto-focus function using an image.
- the camera module 10 processes an image frame of a still image or a moving image obtained by an image sensor in a shooting mode or a video call mode.
- the processed image frame may be displayed on a predetermined display unit and stored in a memory.
- a camera (not shown) may also be disposed on the front of the mobile terminal body.
- the camera module 10 may include a first camera module 10A and a second camera module 10B.
- the first camera module 10A and the second camera module 10B may include the aforementioned camera module, for example, the camera module 10 according to FIGS. 1 to 37 .
- the camera module 10 may implement an OIS function together with a zoom function and an autofocus function.
- the auto focus device 31 may include an auto focus function using a laser.
- the auto focus device 31 may be mainly used in a condition in which the auto focus function using the image of the camera module 10 is deteriorated, for example, in proximity of 10 m or less or in a dark environment.
- the autofocus device 31 may include a light emitting unit including a vertical cavity surface emission laser (VCSEL) semiconductor device and a light receiving unit that converts light energy such as a photodiode into electrical energy.
- VCSEL vertical cavity surface emission laser
- the flash module 33 may include a light emitting device emitting light therein.
- the flash module 33 may be operated by a camera operation of a mobile terminal or a user's control.
- FIG. 28 is a perspective view of the vehicle 5 to which the camera module according to the embodiment is applied.
- FIG. 28 is an external view of a vehicle including a vehicle driving assistance device to which the camera module 10 according to the embodiment is applied.
- the vehicle 5 of the embodiment may include wheels 53FL and 53RL that rotate by a power source, and a predetermined sensor.
- the sensor may be the camera sensor 51, but is not limited thereto.
- the camera 51 may be a camera module according to an embodiment, for example, a camera sensor to which the camera module 10 according to FIGS. 1 to 37 is applied.
- the vehicle 5 of the embodiment may acquire image information through a camera sensor 51 that captures a front image or a surrounding image, and determines a lane unidentified situation using the image information and generates a virtual lane when unidentified can do.
- the camera sensor 51 may acquire a front image by photographing the front of the vehicle 5 , and a processor (not shown) may obtain image information by analyzing an object included in the front image.
- the processor detects the object thus, it can be included in the image information.
- the processor may further supplement the image information by acquiring distance information from the object detected through the camera sensor 51 .
- the image information may be information about an object photographed in an image.
- the camera sensor 51 may include an image sensor and an image processing module.
- the camera sensor 51 may process a still image or a moving image obtained by an image sensor (eg, CMOS or CCD).
- the image processing module may process a still image or a moving image obtained through the image sensor, extract necessary information, and transmit the extracted information to the processor.
- the camera sensor 51 may include a stereo camera to improve the measurement accuracy of the object and further secure information such as the distance between the vehicle 5 and the object, but is not limited thereto.
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Abstract
Description
Claims (10)
- 하우징;상기 하우징 내에 배치되는 프리즘부; 및상기 하우징 내에 배치되며 상기 프리즘부를 틸팅하는 구동부;를 포함하고,상기 구동부는,상기 프리즘부의 중심을 기준으로 제1 방향으로 중첩되는 영역에 배치되는 제1 압전소자; 및상기 프리즘부의 중심을 기준으로 상기 제1 방향과 다른 제2 방향으로 중첩되는 영역에 배치되는 제2 압전소자를 포함하고,상기 프리즘부는 상기 제1 압전소자에 의해 상기 제2 방향으로 틸트 가능하게 제공되고, 상기 제2 압전소자에 의해 상기 제1 방향으로 틸트 가능하게 제공되는카메라 액추에이터.
- 제1항에 있어서,상기 프리즘부는,프리즘; 및상기 프리즘을 감싸며 배치되는 프리즘 무버를 포함하고,상기 프리즘 무버는 상기 구동부와 마주보는 제1측부를 포함하고,상기 제1측부에는 상기 제1 압전소자에 대응하는 제1 돌기부와, 상기 제2 압전소자에 대응하는 제2 돌기부를 포함하는,카메라 액추에이터.
- 제2항에 있어서,상기 제1 압전소자는 상기 제1 돌기부와 접촉하고,상기 제2 압전소자는 상기 제2 돌기부와 접촉하는,카메라 액추에이터.
- 제2항에 있어서,상기 프리즘부가 결합되는 홀더를 포함하고,상기 홀더는,상기 프리즘 무버의 제1측부에 대응하는 제2측부를 포함하고,상기 제2측부는 상기 제1 압전 소자 및 상기 제1 돌기부에 대응하는 제1 홀더 홀과, 상기 제2 압전 소자 및 상기 제2 돌기부에 대응하는 제2 홀더 홀을 포함하는,카메라 액추에이터.
- 제4항에 있어서,상기 홀더는 상기 프리즘 무버의 리세스가 끼움 결합되는 회전 가이드부를 포함하고,상기 프리즘 무버의 리세스 및 상기 회전 가이드부는 경사면을 포함하는,카메라 액추에이터.
- 제4항에 있어서,상기 홀더 및 상기 프리즘부에 결합되고, 상기 프리즘부를 상기 제2측부 방향으로 가압지지하는 탄성부를 포함하는,카메라 액추에이터.
- 제1항에 있어서,상기 구동부는,보강 플레이트; 및상기 보강 플레이트 상에 배치되는 기판부를 포함하고,상기 제1 압전 소자 및 상기 제2 압전 소자는 상기 보강 플레이트에 부착된 상태에서 상기 기판부에 전기적으로 연결되는,카메라 액추에이터.
- 제7항에 있어서,상기 기판부는 상기 보강 플레이트의 일면 중 상기 제1 압전소자 및 상기 제2 압전소자가 배치될 영역을 노출하는 오픈 홀을 포함하는,카메라 액추에이터.
- 제8항에 있어서,상기 오픈 홀을 통해 노출된 보강 플레이트의 일면에 배치되는 접착부를 포함하고,상기 제1 압전 소자 및 상기 제2 압전 소자는 상기 접착부를 통해 상기 보강 플레이트 상에 부착되는,카메라 액추에이터.
- 제9항에 있어서,상기 구동부는 상기 제1 압전 소자 및 상기 제2 압전 소자와 상기 기판부를 전기적으로 연결하는 솔더부를 포함하는,카메라 액추에이터.
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CN202180071833.5A CN116507971A (zh) | 2020-08-20 | 2021-08-20 | 相机致动器 |
US18/022,310 US20240036436A1 (en) | 2020-08-20 | 2021-08-20 | Camera actuator |
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KR1020200104707A KR20220023152A (ko) | 2020-08-20 | 2020-08-20 | 카메라 액추에이터 및 이를 포함하는 카메라 모듈 |
KR10-2020-0104707 | 2020-08-20 |
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Citations (5)
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KR20100030393A (ko) * | 2008-09-10 | 2010-03-18 | 삼성전자주식회사 | 압전 소자를 이용한 액츄에이터 및 액츄에이터 구동 방법 |
KR101051074B1 (ko) * | 2009-11-13 | 2011-07-21 | 주식회사 하이소닉 | 압전소자를 이용한 소형카메라 구동장치 |
WO2015163571A1 (ko) * | 2014-04-24 | 2015-10-29 | (주)하이소닉 | 렌즈 구동을 위한 피에조 액추에이터 및 피에조 액추에이터를 이용한 휴대단말기용 카메라 모듈 |
KR20170060413A (ko) * | 2015-11-24 | 2017-06-01 | 삼성전자주식회사 | 촬상 장치 모듈, 이를 포함하는 사용자 단말 장치 |
KR20180097228A (ko) * | 2017-02-23 | 2018-08-31 | 삼성전기주식회사 | 손떨림 보정 반사모듈 및 이를 포함하는 카메라 모듈 |
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2021
- 2021-08-20 WO PCT/KR2021/011108 patent/WO2022039548A1/ko active Application Filing
- 2021-08-20 CN CN202180071833.5A patent/CN116507971A/zh active Pending
- 2021-08-20 US US18/022,310 patent/US20240036436A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20100030393A (ko) * | 2008-09-10 | 2010-03-18 | 삼성전자주식회사 | 압전 소자를 이용한 액츄에이터 및 액츄에이터 구동 방법 |
KR101051074B1 (ko) * | 2009-11-13 | 2011-07-21 | 주식회사 하이소닉 | 압전소자를 이용한 소형카메라 구동장치 |
WO2015163571A1 (ko) * | 2014-04-24 | 2015-10-29 | (주)하이소닉 | 렌즈 구동을 위한 피에조 액추에이터 및 피에조 액추에이터를 이용한 휴대단말기용 카메라 모듈 |
KR20170060413A (ko) * | 2015-11-24 | 2017-06-01 | 삼성전자주식회사 | 촬상 장치 모듈, 이를 포함하는 사용자 단말 장치 |
KR20180097228A (ko) * | 2017-02-23 | 2018-08-31 | 삼성전기주식회사 | 손떨림 보정 반사모듈 및 이를 포함하는 카메라 모듈 |
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US20240036436A1 (en) | 2024-02-01 |
CN116507971A (zh) | 2023-07-28 |
KR20220023152A (ko) | 2022-03-02 |
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