Camera actuator and camera device comprising the same

Abstract

A camera actuator according to an embodiment of the present invention comprises: a housing; a first holder disposed within the housing and including an optical member; a second holder disposed within the housing and including an optical path changing member disposed within the first holder and changing the optical path of light incident through the optical member; a case disposed within the housing and accommodating the first holder; and a driving unit providing driving force to the first holder and the second holder; wherein the first holder and the second holder can rotate with respect to a first rotation axis and a second rotation axis perpendicular to the first rotation axis.

Description

Technology Field

[0001] The present invention relates to a camera actuator and a camera device including the same. Background Technology

[0002] A camera is a device that captures subjects in photos or videos, and it is mounted on portable devices, drones, vehicles, and the like. To enhance image quality, camera devices may feature Image Stabilization (IS) to correct or prevent image shake caused by user movement, Auto Focusing (AF) to automatically adjust the distance between the image sensor and the lens to align the lens's focal length, and Zooming to increase or decrease the magnification of distant subjects using a zoom lens.

[0003] Meanwhile, as image sensors increase in pixel count, the resolution rises and the size of the pixels decreases; consequently, as pixels become smaller, the amount of light received over the same period of time decreases. Therefore, in high-pixel cameras, image blur caused by hand shake resulting from slow shutter speeds in dark environments can appear more severe. A representative example of image stabilization (IS) technology is optical image stabilization (OIS), which corrects motion by changing the path of light.

[0004] According to general OIS technology, camera movement is detected through a gyro sensor, etc., and based on the detected movement, the lens can be tilted or moved, or the camera module including the lens and image sensor can be tilted or moved. When the lens or the camera module including the lens and image sensor is tilted or moved for OIS, additional space for tilting or moving needs to be secured around the lens or camera module.

[0005] Meanwhile, actuators for OIS may be placed around the lens. In this case, the actuators for OIS may include two axes perpendicular to the optical axis Z, namely, an actuator responsible for X-axis tilting and an actuator responsible for Y-axis tilting.

[0006] However, due to the needs of ultra-slim and ultra-compact camera devices, there are significant spatial constraints for arranging actuators for OIS, and it may be difficult to ensure sufficient space for the lens or the camera module itself, including the lens and image sensor, to tilt or move for OIS. Additionally, as the resolution of the camera increases, it is desirable to increase the size of the lens to increase the amount of light received, but there may be a limit to increasing the size of the lens due to the space occupied by the actuator for OIS.

[0007] In addition, as camera devices become smaller, problems such as degraded image quality may occur due to the inability to secure sufficient light. The problem to be solved

[0008] The embodiment is intended to provide a camera actuator capable of implementing an OIS function that can secure sufficient light.

[0009] The embodiment is intended to provide a camera device including a camera actuator capable of implementing an OIS function that can secure sufficient light.

[0010] The problem to be solved in the embodiments is not limited thereto, and may also include objectives or effects that can be identified from the means of solving the problem or the forms of implementation described below. means of solving the problem

[0011] A camera actuator according to an embodiment of the present invention comprises: a housing; a first holder disposed within the housing and including an optical member; a second holder disposed within the housing and including an optical path changing member disposed within the first holder and changing the optical path of light incident through the optical member; a case disposed within the housing and accommodating the first holder; and a driving unit providing driving force to the first holder and the second holder; wherein the first holder and the second holder can rotate with respect to a first rotation axis and a second rotation axis perpendicular to the first rotation axis.

[0012] The first rotation axis and the second rotation axis may intersect each other to form an intersection point.

[0013] The above intersection point may be formed on the reflective surface of the optical path changing member.

[0014] The second holder may include a first convex portion having a predetermined radius of curvature centered on the intersection point on a first opposing surface facing a first mounting surface on which the optical path changing member is mounted.

[0015] The first holder may include a second mounting surface on which a first opposing surface of the second holder is mounted, and a first receiving portion that accommodates the first convex portion on the second mounting surface.

[0016] The first receiving portion includes first to fourth support surfaces that contact the first convex portion, and the first support surface may face the third support surface in the direction of the first rotation axis, and the second support surface may face the fourth support surface in the direction of the second rotation axis.

[0017] The first holder may include a second convex portion having a predetermined radius of curvature centered on the intersection point on a second opposing surface facing the second seating surface.

[0018] The above case may include a third mounting surface on which the second opposing surface of the first holder is mounted, and a second receiving portion that accommodates the second convex portion on the third mounting surface.

[0019] The second receiving portion includes fifth to eighth supporting surfaces in contact with the second convex portion, the fifth supporting surface may face the seventh supporting surface in the direction of the first rotation axis, and the sixth supporting surface may face the eighth supporting surface in the direction of the second rotation axis.

[0020] The above driving unit may include: a first driving unit that provides a driving force to cause the first holder to rotate about the first rotation axis; a second driving unit that provides a driving force to cause the first holder to rotate about the second rotation axis; a third driving unit that provides a driving force to cause the second holder to rotate about the first rotation axis; and a fourth driving unit that provides a driving force to cause the second holder to rotate about the second rotation axis.

[0021] The first driving unit and the third driving unit are arranged facing each other, and the second driving unit and the fourth driving unit may be arranged in the same direction.

[0022] A camera device according to an embodiment of the present invention comprises: a first camera actuator; a second camera actuator disposed above the first camera actuator; and an image sensor; wherein the first camera actuator comprises: a housing; a first holder disposed within the housing and including an optical member; a second holder disposed within the housing and disposed within the first holder and including an optical path changing member that changes the optical path of light incident through the optical member; a case disposed within the housing and accommodating the first holder; and a driving unit that provides driving force to the first holder and the second holder; wherein the first holder and the second holder can rotate with respect to a first rotation axis and a second rotation axis perpendicular to the first rotation axis.

[0023] A camera actuator according to an embodiment of the present invention may include: an optical member; a first holder that is independently rotatable about a plurality of rotation axes and accommodates the optical member; a light path changing member disposed above the optical member and changing the light path of light incident through the optical member; a second holder that is independently rotatable about the plurality of rotation axes and accommodates the light path changing member; and a driving unit that provides a driving force to each of the first holder and the second holder to rotate independently about the plurality of rotation axes. Effects of the invention

[0024] According to the embodiment, sufficient light can be secured even if the camera device is miniaturized.

[0025] Optical performance can be improved by independently rotating the optical member and the optical path changing member positioned to secure light intensity.

[0026] The various and beneficial advantages and effects of the present invention are not limited to those described above and may be more easily understood in the process of explaining specific embodiments of the present invention. Brief explanation of the drawing

[0027] FIG. 1 is a perspective view of a camera device according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a camera device according to an embodiment of the present invention. Figure 3 is a cross-sectional view cut along AA' in Figure 1. FIG. 4 is a perspective view of a first camera actuator according to an embodiment of the present invention. FIG. 5 is an exploded perspective view of a first camera actuator according to an embodiment of the present invention. FIG. 6 is a plan view of a first camera actuator according to an embodiment of the present invention. FIG. 7 shows a cross-sectional perspective view of a first camera actuator according to an embodiment of the present invention. FIG. 8 is a perspective view of a second holder according to an embodiment of the present invention. FIG. 9 is a cross-sectional view of a second holder according to an embodiment of the present invention. FIG. 10 is a perspective view of a first holder according to an embodiment of the present invention. FIG. 11 is a cross-sectional view of a first holder according to an embodiment of the present invention. FIG. 12 is a perspective view of a case according to an embodiment of the present invention. FIG. 13 is a cross-sectional view of a case according to an embodiment of the present invention. FIGS. 14 and 15 are exploded perspective views of a part of a first camera actuator according to an embodiment of the present invention, and FIG. 16 is a cross-sectional view of a part of the configuration of the first camera actuator. FIG. 17 is a drawing for explaining a first driving unit and a second driving unit according to an embodiment of the present invention. FIG. 18 is a drawing for explaining the third driving unit and the fourth driving unit according to an embodiment of the present invention. FIG. 19 is a perspective view of a camera actuator for explaining a driving unit according to an embodiment of the present invention. FIG. 20 is a perspective view of a mobile terminal to which a camera device according to an embodiment of the present invention is applied. FIG. 21 is a perspective view of a vehicle to which a camera device according to an embodiment of the present invention is applied. Specific details for implementing the invention

[0028] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0029] However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted.

[0030] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0031] Furthermore, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0032] In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as "at least one of A and B and C (or more than one)," it may include one or more of all combinations that can be formed from A, B, and C.

[0033] In addition, terms such as first, second, A, B, (a), (b), etc. may be used to describe the components of the embodiments of the present invention.

[0034] These terms are intended merely to distinguish a component from other components and are not limited by the nature, order, sequence, etc., of the said component.

[0035] And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component.

[0036] Furthermore, when described as being formed or placed "above or below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above or below," it may include the meaning of a downward direction as well as an upward direction relative to a single component.

[0037] FIG. 1 is a perspective view of a camera device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a camera device according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view cut along AA' in FIG. 1.

[0038] Referring to FIGS. 1 and 2, a camera device (1000) according to an embodiment of the present invention may comprise a cover (CV), a first camera actuator (1100), a second camera actuator (1200), and a circuit board (1300). Here, the first camera actuator (1100) may be interchangeably referred to as the 'first actuator' and the second camera actuator (1200) as the 'second actuator'.

[0039] The cover (CV) can cover the first camera actuator (1100) and / or the second camera actuator (1200). The coupling force between the first camera actuator (1100) and the second camera actuator (1200) can be improved by the cover (CV).

[0040] Furthermore, the cover (CV) may be made of a material that performs electromagnetic shielding. Accordingly, the first camera actuator (1100) and the second camera actuator (1200) inside the cover (CV) can be easily protected.

[0041] And, the first camera actuator (1100) may be an OIS (Optical Image Stabilizer) actuator.

[0042] According to an embodiment, the first camera actuator (1100) can change the path of light. According to an embodiment, the first camera actuator (1100) can change the path of light vertically through an internal light path changing member (e.g., a mirror or a prism). With this configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be placed within the mobile terminal through the change of the light path, so that magnification, autofocus (AF), and OIS functions can be performed.

[0043] The first camera actuator (1100) can change the light path from a first direction to a third direction. Here, the first direction is the Z-axis direction, which means the direction in which light is incident on the first camera actuator (1100), and the third direction can correspond to the direction of propagation of light provided to the image sensor in the X-axis direction.

[0044] Additionally, the first camera actuator (1100) may include a fixed focal length lens (fixed focal length les) disposed in a predetermined lens barrel (not shown). The fixed focal length lens (fixed focal length les) may also be referred to as a “single focal length lens” or a “single lens.”

[0045] The second camera actuator (1200) may be positioned at the rear end of the first camera actuator (1100). The second camera actuator (1200) may be positioned on the upper side (image side) of the first camera actuator (1100). The second camera actuator (1200) may be coupled with the first camera actuator (1100). And the coupling between them may be achieved in various ways.

[0046] Additionally, the second camera actuator (1200) may be a zoom actuator or an AF (Auto Focus) actuator. For example, the second camera actuator (1200) may support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an auto-focusing function or a zoom function.

[0047] A circuit board (1300) may be positioned at the rear end of a second camera actuator (1200). The circuit board (1300) may be electrically connected to the second camera actuator (1200) and the first camera actuator (1100). Additionally, there may be multiple circuit boards (1300).

[0048] This circuit board (1300) is connected to the housing of the second camera actuator (1200), and an image sensor may be provided thereon. Furthermore, a base portion including a filter may be mounted on the circuit board (1300).

[0049] The camera device according to the embodiment may consist of a single or multiple camera devices. For example, the multiple camera devices may include a first camera device and a second camera device. Additionally, as described above, the camera device may be used interchangeably with terms such as 'camera module', 'camera device', 'imaging device', 'imaging module', 'imaging apparatus', etc.

[0050] Additionally, the first camera device may include a single or multiple actuators. For example, the first camera device may include a first camera actuator (1100) and a second camera actuator (1200).

[0051] Additionally, the second camera device may be disposed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving a lens portion. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, etc., and may be applied in various ways such as electrostatic, thermal, bimorphic, and electrostatic force methods, but is not limited thereto. Furthermore, in this specification, the camera actuator may be referred to as an actuator, etc. Additionally, a camera device composed of a plurality of camera devices may be mounted within various electronic devices, such as mobile terminals.

[0052] Referring to FIG. 3, a camera device according to an embodiment of the present invention may include a first camera actuator (1100) that performs an OIS function and a second camera actuator (1200) that performs a zooming function and an AF function.

[0053] Light can be incident into the camera device through the upper surface of the first camera actuator (1100). That is, light is incident into the interior of the first camera actuator (1100) along the optical axis direction (e.g., X-axis direction), and the light path can be changed in a vertical direction (e.g., Z-axis direction) through an optical member. Then, light passes through the second camera actuator (1200) and can be incident on an image sensor (IS) located at one end of the second camera actuator (1200) (PATH).

[0054] Furthermore, through this configuration, the camera device according to the embodiment can improve the spatial limitations of the first camera actuator and the second camera actuator by changing the light path. That is, the camera device according to the embodiment can expand the light path while minimizing the thickness of the camera device in response to the change in the light path. Furthermore, it should be understood that the second camera actuator may provide a high range of magnification by controlling focus, etc., in the expanded light path.

[0055] In addition, the camera device according to the embodiment can implement OIS by controlling the optical path through the first camera actuator, thereby minimizing the occurrence of decent or tilt phenomena and producing optimal optical characteristics.

[0056] Furthermore, the second camera actuator (1200) may include an optical system and a lens driving unit. For example, at least one of a first lens assembly, a second lens assembly, a third lens assembly, and a guide pin may be disposed in the second camera actuator (1200).

[0057] Additionally, the second camera actuator (1200) is equipped with a coil and a magnet to perform a high-magnification zooming function.

[0058] For example, the first lens assembly and the second lens assembly may be moving lenses that move via coils, magnets, and guide pins, and the third lens assembly may be a fixed lens, but is not limited thereto. For example, the third lens assembly may perform the function of a focuser that forms an image of light at a specific location, and the first lens assembly may perform the function of a variationator that re-forms the image formed by the third lens assembly (focuser) at a different location. Meanwhile, the first lens assembly may be in a state where the magnification changes significantly due to a large change in the distance to the subject or the image distance, and the first lens assembly (variator) may play an important role in the change of focal length or magnification of the optical system. On the other hand, the image formed by the first lens assembly (variator) may differ slightly depending on the location. Accordingly, the second lens assembly may perform a position compensation function for the image formed by the variationator. For example, the second lens assembly can perform the function of a compensator that accurately forms the image formed by the first lens assembly (which acts as a transducer) at the actual image sensor location. For example, the first lens assembly and the second lens assembly can be driven by electromagnetic force resulting from the interaction between a coil and a magnet. The above description may be applied to the lens assembly described below.

[0059] Meanwhile, according to an embodiment of the present invention, when an actuator for OIS and an actuator for AF or Zoom are arranged, magnetic field interference with the magnet for AF or Zoom during OIS operation can be prevented. Since the first driving magnet of the first camera actuator (1100) is arranged separately from the second camera actuator (1200), magnetic field interference between the first camera actuator (1100) and the second camera actuator (1200) can be prevented. In this specification, OIS may be used interchangeably with terms such as hand shake correction, optical image stabilization, optical image correction, and shake correction.

[0060] FIG. 4 is a perspective view of a first camera actuator according to an embodiment of the present invention, and FIG. 5 is an exploded perspective view of a first camera actuator according to an embodiment of the present invention.

[0061] Referring to FIGS. 4 and 5, a first camera actuator (2000) according to an embodiment of the present invention may include a housing (2100), an optical member (2200), a first holder (2300), an optical path changing member (2400), a second holder (2500), a case (2600), a driving unit (2800), and a substrate (2700).

[0062] The housing (2100) may be located at the outermost side of the first camera actuator (2000). The housing (2100) may accommodate an optical member (2200), a first holder (2300), an optical path changing member (2400), a second holder (2500), a case (2600), a driving unit (2800), and a substrate (2700). To this end, the housing (2100) may form an internal receiving space. In the receiving space of the housing (2100), a member on which the substrate (2700), case (2600), etc. can be seated may be disposed.

[0063] The housing (2100) can be coupled with the second camera actuator (2000). The housing (2100) may include a coupling portion for coupling with the housing (2100) of the second camera actuator.

[0064] According to one embodiment, the housing (2100) may be implemented in a cuboid shape. The housing (2100) implemented in a cuboid shape may have an open top surface and one side surface. The open top surface may be the direction in which light is incident, and the open side surface may be the direction in which light is emitted. The open side surface may be the direction in which it is coupled with the second camera actuator (2000).

[0065] The optical member (2200) may be located on the upper side of the first camera actuator (2000). The optical member (2200) may include at least one lens. According to one embodiment, the optical member (2200) may be composed of a single lens. In another embodiment, the optical member (2200) may be composed of a plurality of lenses. The number of lenses in the optical member (2200) may vary depending on the application to which the camera module is applied.

[0066] The optical member (2200) can receive light. The optical member (2200) can receive light incident from a subject. The optical member (2200) may include at least one light-receiving lens. The optical member (2200) can concentrate light. The optical member (2200) can concentrate light incident from a subject. The optical member (2200) may include at least one light-concentrating lens.

[0067] The optical member (2200) may have positive (+) power. If the optical member (2200) is composed of a lens group including multiple lenses, the entire lens group may have positive (+) power. If the optical member (2200) is composed of a single lens, the single lens may have positive (+) power.

[0068] The optical member (2200) may include at least one lens in which the thickness of the edge portion of the effective diameter is thinner than the thickness of the center portion of the effective diameter. If the optical member (2200) is composed of a lens group comprising a plurality of lenses, at least one of the plurality of lenses may have the thickness of the edge portion of the effective diameter thinner than the thickness of the center portion of the effective diameter. If the optical member (2200) is composed of a single lens, the thickness of the edge portion of the effective diameter of the single lens may be thinner than the thickness of the center portion of the effective diameter.

[0069] The optical member (2200) may include at least one convex lens. If the optical member (2200) is composed of a lens group comprising a plurality of lenses, at least one of the plurality of lenses may be a convex lens. If the optical member (2200) is composed of a single lens, the single lens may be a convex lens.

[0070] By configuring the optical member (2200) as described above, the camera module according to the embodiment of the present invention can increase the amount of light received by improving the F number (Fno).

[0071] The optical member (2200) can move to implement the OIS function of the camera module. According to one embodiment, the optical member (2200) can rotate at any angle around any axis of rotation. By rotating the optical member (2200) at any angle, the path of the incident light can be changed.

[0072] The first holder (2300) can be accommodated in the housing (2100). The first holder (2300) can be seated in the case (2600). The first holder (2300) can be seated in the case (2600) and accommodated in the housing (2100).

[0073] The first holder (2300) may include an optical member (2200). An optical member (2200) may be disposed on one side of the first holder (2300). According to an embodiment, an opening may be formed on the upper surface of the first holder (2300), and an optical member (2200) may be coupled to the opening formed on the upper surface.

[0074] The first holder (2300) can rotate about a first rotation axis (RX1) and / or a second rotation axis (RX2). The first holder (2300) can rotate independently about a plurality of rotation axes. As the first holder (2300) rotates about the first rotation axis (RX1) and / or the second rotation axis (RX2), the coupled optical member (2200) can also rotate about the first rotation axis (RX1) and / or the second rotation axis (RX2). Accordingly, as the first holder (2300) rotates about the first rotation axis (RX1) and / or the second rotation axis (RX2), the optical path of light passing through the optical member (2200) can be changed.

[0075] A driving unit (2800) may be coupled to at least one side of the first holder (2300) to provide a driving force for rotation about a first rotation axis (RX1) and / or a second rotation axis (RX2). A driving unit (2800) providing a driving force for rotation about the first rotation axis (RX1) may be coupled to one side of the first holder (2300). A driving unit (2800) providing a driving force for rotation about the second rotation axis (RX2) may be coupled to the other side of the first holder (2300).

[0076] The optical path changing member (2400) may be positioned inside the first camera actuator (2000). The optical path changing member (2400) may be positioned on the upper side (image side) of the optical member (2200). The optical path changing member (2400) is positioned on the upper side of the optical member (2200) and can change the path of light received through the optical member (2200) to output it. The optical path changing member (2400) can reflect light incident from the optical member (2200) and output it to the second camera actuator (2000).

[0077] According to one embodiment, the optical path changing member (2400) may be composed of a prism. The prism may include a first surface (incident surface) into which light is incident from the optical member (2200), a second surface (reflection surface) into which light incident through the first surface (incident surface) is reflected, and a third surface (output surface) into which light reflected through the second surface (reflection surface) is output. According to one embodiment, the optical path changing member (2400) may be composed of a mirror. The mirror may include a reflection surface that reflects light input from the optical member (2200). In this way, the optical path changing member (2400) may reflect light incident from the outside (e.g., an object) into the camera module. For example, the optical path changing member (2400) may reflect the incident light in the direction of the image sensor. Thus, it should be understood that the camera module may provide a high range of magnification by extending the light path while minimizing thickness.

[0078] The second holder (2500) can be accommodated in the housing (2100). The second holder (2500) can be accommodated in the first holder (2300). The second holder (2500) can be seated on the first holder (2300). The second holder (2500) can be seated on the first holder (2300) and accommodated in the housing (2100).

[0079] The second holder (2500) may include an optical path changing member (2400). The second holder (2500) may have a receiving space formed to accommodate the optical path changing member (2400). A seating surface may be formed in the receiving space of the second holder (2500) to allow the reflective surface of the optical path changing member (2400) to be seated. The upper surface and one side of the receiving space of the second holder (2500) are open, and the direction of the open upper surface may be the direction in which light is incident from the optical member (2200), and the direction of the open one side may be the direction in which light is emitted to the second camera actuator (2000).

[0080] The second holder (2500) can rotate about the first rotation axis (RX1) and / or the second rotation axis (RX2). The second holder (2500) can rotate independently about a plurality of rotation axes. As the second holder (2500) rotates about the first rotation axis (RX1) and / or the second rotation axis (RX2), the mounted optical path changing member (2400) can also rotate about the first rotation axis (RX1) and / or the second rotation axis (RX2). Accordingly, as the second holder (2500) rotates about the first rotation axis (RX1) and / or the second rotation axis (RX2), the optical path of the light reflected by the optical path changing member (2400) can be changed.

[0081] A driving unit (2800) may be coupled to at least one side of the second holder (2500) to provide a driving force for rotation about a first rotation axis (RX1) and / or a second rotation axis (RX2). A driving unit (2800) providing a driving force for rotation about the first rotation axis (RX1) may be coupled to one side of the second holder (2500). A driving unit (2800) providing a driving force for rotation about the second rotation axis (RX2) may be coupled to the other side of the second holder (2500).

[0082] The case (2600) may be placed within the housing (2100). The case (2600) may accommodate a first holder (2300). The case (2600) may accommodate a first holder (2300) that accommodates a second holder (2500). That is, the case (2600) may accommodate a first holder (2300) and a second holder (2500), and a receiving space may be formed for this purpose. The case (2600) may include a seating surface on which the first holder (2300) can be seated.

[0083] A substrate (2700) may be placed within a housing (2100). A substrate (2700) may be placed in a receiving space within the housing (2100). A driving unit (2800) may be placed on the substrate (2700) and may be electrically connected to the outside to supply power to the driving unit (2800). To this end, a circuit capable of supplying power to the driving unit (2800) or controlling the power supply may be placed on the substrate (2700). The substrate (2700) may be a PCB, but is not limited thereto.

[0084] The driving unit (2800) can provide driving force to the first holder (2300) and the second holder (2500). The driving unit (2800) may be composed of multiple units, and each of the multiple driving units (2800) can provide driving force to the first holder (2300) and the second holder (2500). According to one embodiment, the driving unit (2800) may include first to fourth driving units. The first driving unit (2800) can provide driving force to cause the first holder (2300) to rotate about the first rotation axis (RX1). The second driving unit (2800) can provide driving force to cause the first holder (2300) to rotate about the second rotation axis (RX2). The third driving unit (2800) can provide driving force to cause the second holder (2500) to rotate about the first rotation axis (RX1). The fourth drive unit (2800) can provide a driving force to cause the second holder (2500) to rotate about the second rotation axis (RX2). The drive unit (2800) can provide a driving force to each of the first holder and the second holder to rotate independently about a plurality of rotation axes.

[0085] The driving unit (2800) may be implemented as various devices capable of providing driving force. According to one embodiment, the driving unit (2800) may be a voice coil motor (VCM) comprising at least one magnet and at least one coil facing it. In this case, the coil or magnet may be coupled to a first holder (2300) or a second holder (2500), and the facing magnet or coil may be coupled to a substrate (2700). According to another embodiment, the driving unit (2800) may be implemented as a device capable of providing driving force, such as an encoder device or a piezo device.

[0086] FIG. 6 is a plan view of a first camera actuator according to an embodiment of the present invention.

[0087] Referring to FIG. 6, an optical member (2200) may be disposed on the upper surface of the first camera actuator (2000), and an optical path changing member (2400) may be disposed on the upper side (image side) of the optical member (2200). The optical member (2200) may be implemented as a circular lens having a predetermined radius (dr). And, the optical path changing member (2400) may be implemented as a prism having a predetermined area on the first incident surface (incident surface).

[0088] The optical member (2200) and the optical path changing member (2400) may be arranged such that, when viewed from the upper surface of the first camera actuator (2000), some areas overlap each other but some areas do not overlap each other.

[0089] According to one embodiment, the optical member (2200) may be a circular lens having a predetermined radius (dr), and the first surface (incident surface) of the optical path changing member (2400) may have a predetermined length (l1) of a perpendicular line from the center of the surface to one side perpendicular to it. Here, the radius (dr) of the optical member (2200) may be greater than the length (l1) of the perpendicular line of the optical path changing member (2400) (dr > l1). Accordingly, when viewed from the upper surface of the first camera actuator (2000), the outer regions of the optical member (2200) corresponding to each side of the first surface of the optical path changing member (2400) may not overlap with the first surface of the optical path changing member (2400).

[0090] According to one embodiment, the optical member (2200) may be a circular lens having a predetermined radius (dr), and the first surface (i.e., incident surface) of the optical path changing member (2400) may have a predetermined length (l2) from the center of the first surface to the edge. Here, the radius (dr) of the optical member (2200) may be smaller than the length (l2) from the center of the first surface of the optical path changing member (2400) to the edge (l2 > dr). Accordingly, when viewed from the upper surface of the first camera actuator (2000), the edge area of ​​the first surface of the optical path changing member (2400) may not overlap with the optical member (2200).

[0091] If the radius of the optical member (2200) is implemented to be smaller than the length of the perpendicular line of the optical path changing member (2400), the amount of light incident on the optical path changing member (2400) is reduced, which may result in a decrease in image quality. Additionally, if the radius of the optical member (2200) is implemented to be larger than the length from the center of the first surface of the optical path changing member (2400) to the corner, the weight and volume of the first camera actuator (2000) increase, it becomes difficult to control the rotation of the first holder by the driving unit, the manufacturing cost increases, and the control power increases significantly. It is preferable that the radius of the optical member (2200) be maintained within a range that is larger than the length of the perpendicular line of the optical path changing member (2400) and smaller than the length from the center of the first surface of the optical path changing member (2400) to the corner.

[0092] FIG. 7 shows a cross-sectional perspective view of a first camera actuator according to an embodiment of the present invention.

[0093] Referring to FIG. 7, the first holder (2300) can rotate about a predetermined axis of rotation. As the first holder (2300) rotates about the predetermined axis of rotation, the optical member (2200) coupled to the first holder (2300) can also rotate about the predetermined axis of rotation. For example, the first holder (2300) can rotate clockwise about the first axis of rotation (RX1). Accordingly, the optical member (2200) can rotate clockwise about the first axis of rotation (RX1). The first holder (2300) can rotate counterclockwise about the first axis of rotation (RX1). Accordingly, the optical member (2200) can rotate counterclockwise about the first axis of rotation (RX1). The first holder (2300) can rotate clockwise about the second axis of rotation (RX2). Accordingly, the optical member (2200) can rotate clockwise with respect to the second rotation axis (RX2). The first holder (2300) can rotate counterclockwise with respect to the second rotation axis (RX2). Accordingly, the optical member (2200) can rotate counterclockwise with respect to the second rotation axis (RX2).

[0094] Additionally, the second holder (2500) can rotate about a predetermined rotation axis. As the second holder (2500) rotates about a predetermined rotation axis, the optical path changing member (2400) coupled to the second holder (2500) can also rotate about a predetermined rotation axis. For example, the second holder (2500) can rotate clockwise about the first rotation axis (RX1). Accordingly, the optical path changing member (2400) can rotate clockwise about the first rotation axis (RX1). The second holder (2500) can rotate counterclockwise about the first rotation axis (RX1). Accordingly, the optical path changing member (2400) can rotate counterclockwise about the first rotation axis (RX1). The second holder (2500) can rotate clockwise about the second rotation axis (RX2). Accordingly, the optical path changing member (2400) can rotate clockwise with respect to the second rotation axis (RX2). The second holder (2500) can rotate counterclockwise with respect to the second rotation axis (RX2). Accordingly, the optical path changing member (2400) can rotate counterclockwise with respect to the second rotation axis (RX2).

[0095] Here, the first rotation axis (RX1) may be formed in the x-axis direction of the camera device (module). The first rotation axis (RX1) may be formed parallel to the optical axis of the second camera actuator. When the first camera actuator (2000) is in a reference position where OIS is not driven, the first rotation axis (RX1) may be the same as the optical axis of the second camera actuator. And, the second rotation axis (RX2) may be formed in the y-axis direction of the camera device (module). The second rotation axis (RX2) may be formed parallel to the optical axis of the optical member (2200).

[0096] The first rotation axis (RX1) and the second rotation axis (RX2) may intersect each other. The first rotation axis (RX1) and the second rotation axis (RX2) may intersect each other to form an intersection point (P). The intersection point (P) where the first rotation axis (RX1) and the second rotation axis (RX2) intersect may be formed on the reflective surface of the optical path changing member (2400).

[0097] As the first rotation axis (RX1) and the second rotation axis (RX2) intersect each other to form an intersection point (P), the first holder (2300) and the second holder (2500) can rotate through the first rotation axis (RX1) and / or the second rotation axis (RX2) with the intersection point (P) as the origin. Even if the first holder (2300) and the second holder (2500) rotate with respect to the first rotation axis (RX1) and the second rotation axis (RX2), the intersection point (P) may not change. Accordingly, even if the first holder (2300) and the second holder (2500) are each driven to rotate independently by different driving units (2800), optical performance may not be degraded.

[0098] Meanwhile, the first rotation axis (RX1) and the second rotation axis (RX2) may intersect each other to form a predetermined angle. According to one embodiment, the first rotation axis (RX1) and the second rotation axis (RX2) may intersect perpendicularly to each other. The first rotation axis (RX1) and the second rotation axis (RX2) may intersect to form an angle of 90 degrees to each other centered on the intersection point (P).

[0099] FIG. 8 is a perspective view of a second holder according to an embodiment of the present invention. FIG. 9 is a cross-sectional view of a second holder according to an embodiment of the present invention.

[0100] Referring to FIGS. 8 and 9, the second holder (2500) may include a receiving space (S1). An optical path changing member may be disposed in the receiving space (S1) of the second holder (2500). An optical path changing member may be seated in the receiving space (S1) of the second holder (2500).

[0101] The second holder (2500) may have one side in the z-axis direction and one side in the x-axis direction open. An optical member may be disposed on the side of the second holder (2500) that is open in the z-axis direction. Since the side of the second holder (2500) in the z-axis direction is open, the optical path changing member disposed in the receiving space (S1) of the second holder (2500) can receive light incident through the optical member. A second camera actuator may be disposed on the side of the second holder (2500) in the x-axis direction. Since the side of the second holder (2500) in the x-axis direction is open, light whose optical path has been changed by the optical path changing member can be output to the second camera actuator.

[0102] The receiving space (S1) of the second holder (2500) may be enclosed by at least three members. The receiving space (S1) of the second holder (2500) may be enclosed by a first side wall (2520), a second side wall (2530), and a lower member (2510). The first side wall (2520) and the second side wall (2530) may correspond to the sides of the optical path changing member placed in the receiving space (S1). The first side wall (2520) and the second side wall (2530) may serve to fix the optical path changing member so that it does not move in the left-right direction (i.e., the y direction). The lower member (2510) may support and seat the optical path changing member in the z-axis direction when the optical path changing member is placed in the receiving space (S1). The lower member (2510) may be placed with an incline. The first member may be placed to have a predetermined angle with respect to the xy plane. At this time, a predetermined angle may be the same as the angle of inclination of the reflective surface of the optical path changing member.

[0103] The lower member (2510) may include a first mounting surface (2511) on which the optical path changing member is mounted. The lower member (2510) may include a first opposing surface (2512) facing the first mounting surface (2511). The first opposing surface (2512) may be positioned facing the mounting surface of the first holder. The first opposing surface (2512) may be mounted on the mounting surface of the first holder.

[0104] The second holder (2500) may include a first convex portion (2540) formed on the first opposing surface (2512) of the lower member (2510). The first convex portion may be a hemispherical shape having a predetermined radius of curvature centered on the intersection point (P) of the first rotation axis and the second rotation axis formed on the reflective surface of the optical path changing member. That is, the first convex portion (2540) may be a hemispherical shape having a constant distance from the outer surface to the intersection point (P).

[0105] FIG. 10 is a perspective view of a first holder according to an embodiment of the present invention. FIG. 11 is a cross-sectional view of a first holder according to an embodiment of the present invention.

[0106] Referring to FIGS. 10 and 11, the first holder (2300) may include a receiving space (S2). A second holder may be placed in the receiving space (S2) of the first holder (2300). A second holder may be seated in the receiving space (S2) of the first holder (2300).

[0107] The first holder (2300) may have surfaces in the z-axis direction and the x-axis direction open. An optical member may be disposed on the open surface in the z-axis direction of the first holder (2300). Since the optical member is disposed on the open surface in the z-axis direction of the first holder (2300), light from the outside can be input into the first camera actuator through the optical member. A second camera actuator may be disposed in the x-axis direction of the receiving space (S2) of the first holder (2300). Since the surfaces in the x-axis direction of the first holder (2300) and the second holder are open, light whose optical path has been changed by an optical path changing member can be output to the second camera actuator.

[0108] The receiving space (S2) of the first holder (2300) may be enclosed by at least three members. The receiving space (S2) of the first holder (2300) may be enclosed by a first side wall (2320), a second side wall (2330), and a lower member (2310).

[0109] The first side wall (2320) and the second side wall (2330) of the first holder (2300) may be positioned opposite the side wall of the second holder placed in the receiving space (S2). The first side wall (2320) and the second side wall (2330) of the first holder (2300) may be positioned spaced apart from the side wall of the second holder by a predetermined distance. As they are spaced apart by a predetermined distance, a space may be formed in which the second holder placed within the receiving space (S2) can rotate about a first rotation axis. An opening may be formed in a portion of the second side wall (2330) of the first holder (2300). A driving unit for providing driving force to the second holder may be positioned in the opening formed in the second side wall (2330).

[0110] The lower member (2310) of the first holder (2300) can support and seat the second holder in the z-axis direction when the second holder is placed in the receiving space (S2). The lower member (2310) of the first holder (2300) can be positioned with an incline. The lower member (2310) of the first holder (2300) can be positioned to have a predetermined angle with respect to the xy plane.

[0111] The lower member (2310) of the first holder (2300) may include a second seating surface (2311) on which the second holder is seated. The second seating surface (2311) of the lower member (2310) of the first holder (2300) may be positioned opposite to the first opposing surface (2312) of the lower member (2310) of the second holder. The second seating surface (2311) and the first opposing surface (2312) may be spaced apart by a predetermined distance.

[0112] A first receiving portion (2350) may be disposed on the second seating surface (2311) of the lower member (2310). When the second holder is received in the first holder (2300) and coupled, a first convex portion may be disposed on the first receiving portion (2350). The first receiving portion (2350) may be a groove including at least four support surfaces. The first receiving portion (2350) may include first to fourth support surfaces (2351 to 2354). The first to fourth support surfaces (2351 to 2354) may be disposed at a predetermined angle with respect to the second seating surface (2311). The predetermined angle may be 0 to 90 degrees. The first support surface (2351) and the third support surface (2353) may face each other in the direction of the first rotation axis. That is, the first support surface (2351) and the third support surface (2353) may be arranged facing each other in the x-axis direction. The second support surface (2352) and the fourth support surface (2354) may be arranged facing each other in the direction of the second rotation axis. That is, the second support surface (2352) and the fourth support surface (2354) may be arranged facing each other in the y-axis direction. The first to fourth support surfaces (2351 to 2354) may come into contact with the first convex portion. By the first to fourth support surfaces (2351 to 2354) coming into contact with the first convex portion, the first holder (2300) can support the second holder. Since each of the first to fourth support surfaces (2351 to 2354) makes point contact with the first convex portion, the frictional force during rotation of the second holder can be significantly reduced. In addition, since two contact points are formed in the direction of the first rotation axis and the direction of the second rotation axis, respectively, it has the advantage of improving the supporting force of the second holder. Meanwhile, in another embodiment, the first receiving portion may be implemented as a spherical groove that can make surface contact with the first convex portion.

[0113] The lower member (2310) of the first holder (2300) may include a second opposing surface (2312) facing the second seating surface (2311). The second opposing surface (2312) may be positioned facing the seating surface (2311) of the case. The second opposing surface (2312) may be seated on the seating surface (2311) of the case.

[0114] The first holder (2300) may include a second convex portion (2340) formed on the second opposing surface (2312) of the lower member (2310). The second convex portion (2340) may be a hemispherical shape having a predetermined radius of curvature centered on the intersection point (P) of the first rotation axis and the second rotation axis formed on the reflective surface of the optical path changing member. That is, the second convex portion (2340) may be a hemispherical shape having a constant distance from the outer surface to the intersection point (P). At this time, the radius of curvature of the second convex portion (2340) may be larger than the radius of curvature of the first convex portion.

[0115] FIG. 12 is a perspective view of a case according to an embodiment of the present invention. FIG. 13 is a cross-sectional view of a case according to an embodiment of the present invention.

[0116] Referring to FIGS. 12 and 13, the case (2600) may include a receiving space (S3). A first holder may be placed in the receiving space (S3) of the case (2600). A first holder may be seated in the receiving space (S3) of the case (2600).

[0117] The case (2600) may have surfaces in the z-axis direction and the x-axis direction open. An optical member may be disposed on the open surface side in the z-axis direction of the case (2600). Since the optical member is disposed on the open surface side in the z-axis direction of the case (2600), light from the outside can be input into the first camera actuator through the optical member. A second camera actuator may be disposed on the open surface side in the x-axis direction of the receiving space (S3) of the case (2600). Since the open surface side in the x-axis direction of the case (2600), the first holder, and the second holder is open, light whose optical path has been changed by the optical path changing member can be output to the second camera actuator.

[0118] The receiving space (S3) of the case (2600) can be enclosed by at least three members. The receiving space (S3) of the case (2600) can be enclosed by a first side wall (2620), a second side wall (2630), and a lower member (2610).

[0119] The first side wall (2620) and the second side wall (2630) may be positioned opposite the side wall of the first holder placed in the receiving space (S3). The first side wall (2620) and the second side wall (2630) may be positioned spaced apart from the first side wall and the second side wall of the first holder by a predetermined distance. As the first side wall (2620) and the second side wall (2630) are spaced apart from the first side wall and the second side wall of the first holder by a predetermined distance, a space may be formed in which the first holder placed within the receiving space (S3) can rotate about a first rotation axis. An opening may be formed in a portion of the first side wall (2620) and the second side wall (2630) of the case (2600). A driving unit for providing driving force to the first holder and the second holder may be disposed in the opening formed in the first side wall (2620) and the second side wall (2630).

[0120] The lower member (2610) can support and seat the first holder in the z-axis direction when the first holder is placed in the receiving space (S3). The lower member (2610) can be positioned with an incline. The lower member (2610) can be positioned to have a predetermined angle with respect to the xy plane.

[0121] The lower member (2610) may include a third seating surface (2611) on which the first holder is seated. The third seating surface (2611) of the lower member (2610) of the case (2600) may be positioned opposite to the second opposing surface of the lower member of the first holder. The third seating surface (2611) and the second opposing surface may be spaced apart by a predetermined distance.

[0122] A second receiving portion (2640) may be disposed on the third seating surface (2611) of the lower member (2610). When the first holder is received in the case (2600) and coupled, a second convex portion may be disposed on the second receiving portion (2640). The second receiving portion (2640) may be a groove including at least four support surfaces. The second receiving portion (2640) may include fifth to eighth support surfaces (2641 to 2644). The fifth to eighth support surfaces (2641 to 2644) may be disposed at a predetermined angle with respect to the third seating surface (2611). The predetermined angle may be 0 to 90 degrees. The fifth support surface (2641) and the seventh support surface (2643) may face each other in the direction of the first rotation axis. That is, the fifth support surface (2641) and the seventh support surface (2643) may be arranged facing each other in the x-axis direction. The sixth support surface (2642) and the eighth support surface (2644) may be arranged facing each other in the direction of the second rotation axis. That is, the sixth support surface (2642) and the eighth support surface (2644) may be arranged facing each other in the y-axis direction. The fifth to eighth support surfaces (2641 to 2644) may come into contact with the second convex portion. By the fifth to eighth support surfaces (2641 to 2644) coming into contact with the second convex portion, the case (2600) can support the first holder. Since each of the fifth to eighth support surfaces (2641 to 2644) makes point contact with the first convex portion, the frictional force during rotation of the second holder can be significantly reduced. In addition, since two contact points are formed in the direction of the first rotation axis and the direction of the second rotation axis, respectively, it has the advantage of improving the supporting force of the second holder. Meanwhile, in another embodiment, the second receiving portion may be implemented as a spherical groove that can make surface contact with the second convex portion.

[0123] Meanwhile, a through hole may be formed on the lower side of the case (2600). A hole penetrating in the x-axis direction may be formed on the lower side of the case (2600). A portion of the substrate may be inserted through the through hole formed on the lower side. A driving unit may be disposed on one side of the substrate inserted through the through hole.

[0124] FIGS. 14 and 15 are exploded perspective views of a part of a first camera actuator according to an embodiment of the present invention, and FIG. 16 is a cross-sectional view of a part of a first camera actuator.

[0125] FIGS. 14 to 16 illustrate only the first holder (2300), the second holder (2500), and the case (2600) of the first camera actuator.

[0126] Referring to FIGS. 14 to 16, the second holder (2500) may be placed in the receiving space of the first holder (2300), and the first holder (2300) may be placed in the receiving space of the case (2600). Accordingly, the lower member (2610) of the case (2600), the lower member (2310) of the first holder (2300), and the lower member (2510) of the second holder (2500) may be sequentially arranged from the lower side to the upper side.

[0127] When the second holder (2500) is placed in the receiving space of the first holder (2300), the first convex portion (2540) formed on the first opposing surface of the lower member (2510) of the second holder (2500) may be placed in the first receiving portion (2350) formed on the seating surface of the lower member (2310) of the first holder (2300). The first convex portion (2540) may be inserted into the first receiving portion (2350). Furthermore, when the first holder (2300) is placed in the receiving space of the case (2600), the second convex portion (2340) formed on the second opposing surface of the lower member (2310) of the first holder (2300) may be placed in the second receiving portion (2640) formed on the seating surface of the lower member (2610) of the case (2600). The second convex portion (2340) can be inserted into the second receiving portion (2640).

[0128] As previously described, the first convex portion (2540) of the second holder (2500) can be implemented in a hemispherical shape having a predetermined radius of curvature from the intersection point (P) formed on the reflective surface of the optical path changing member to the outer surface. Additionally, the second convex portion (2340) of the first holder (2300) can be implemented in a hemispherical shape having a predetermined radius of curvature from the intersection point (P) formed on the reflective surface of the optical path changing member to the outer surface.

[0129] When the second holder (2500) is placed in the receiving space of the first holder (2300), a predetermined separation distance (d1) may be formed between the opposing surface of the lower member (2510) of the second holder (2500) and the seating surface of the lower member (2310) of the first holder (2300). Through this separation distance (d1), the second holder (2500) can secure a space in which it can rotate around a second rotation axis. When the first holder (2300) is placed in the receiving space of the case (2600), a predetermined separation distance (d2) may be formed between the opposing surface of the lower member (2310) of the first holder (2300) and the seating surface of the lower member (2610) of the case (2600). Through this separation distance (d2), the first holder (2300) can secure a space in which it can rotate around a second rotation axis.

[0130] When the first convex portion (2540) is placed in the first receiving portion (2350), the supporting surfaces of the first convex portion (2540) and the first receiving portion (2350) may make point contact. Accordingly, a gap may be formed between the first convex portion (2540) and the first receiving portion (2350). When the second convex portion (2340) is placed in the second receiving portion (2640), the supporting surfaces of the second convex portion (2340) and the second receiving portion (2640) may make point contact. Accordingly, a gap may be formed between the second convex portion (2340) and the second receiving portion (2640). Such a gap has the advantage of reducing frictional force during rotation of the first holder (2300) and the second holder (2500), thereby improving ease of control.

[0131] Meanwhile, in an embodiment of the present invention, a structure is disclosed in which the first holder (2300) and the second holder (2500) can rotate with respect to the first rotation axis and / or the second rotation axis through the first convex portion (2540) and the first receiving portion (2350), and the second convex portion (2340) and the second receiving portion (2640), but various other embodiments may exist. For example, the function described above may be implemented by forming guide grooves in the second holder (2500), the first holder (2300), and the case (2600), and by placing a ball in the guide groove instead of the first convex portion (2540) and the second convex portion (2340).

[0132] FIG. 17 is a drawing for explaining a first driving unit and a second driving unit according to an embodiment of the present invention, FIG. 18 is a drawing for explaining a third driving unit and a fourth driving unit according to an embodiment of the present invention, and FIG. 19 is a perspective view of a camera actuator for explaining a driving unit according to an embodiment of the present invention.

[0133] Referring to FIGS. 17 to 19, the driving unit may be multiple. The driving unit may include first to fourth driving units (2810 to 2840).

[0134] First, referring to FIG. 17, the first driving unit (2810) can provide driving force to the first holder (2300). The first driving unit (2810) can provide driving force so that the first holder (2300) rotates about a first rotation axis. To this end, the first driving unit (2810) may include a first magnet (2811) and a first coil (2812).

[0135] The first magnet (2811) may include at least one N-pole region and at least one S-pole region. For example, as shown in the drawing, the first magnet (2811) may be composed of one S-pole region and one N-pole region. As another example, the first magnet (2811) may be configured such that two S-pole regions and two N-pole regions are arranged alternately. The first coil (2812) may be composed of a metallic material through which current flows. The coil may be composed of a closed-loop metallic material.

[0136] The first driving unit (2810) may be disposed on the first holder (2300) and the substrate. The first coil (2812) and the first magnet (2811) may be disposed on the first holder (2300) and the substrate facing each other. According to one embodiment, the first magnet (2811) may be disposed on the side wall of the first holder (2300). The first magnet (2811) may be disposed on any one of the side walls of the first holder (2300) parallel to the first rotation axis. And, the first coil (2812) may be coupled to the substrate and disposed to face the first magnet (2811). According to another embodiment, the first coil (2812) may be disposed on the side wall of the first holder (2300). The first coil (2812) may be placed on any one of the side walls of the first holder (2300) parallel to the first rotation axis. And, the first magnet (2811) may be coupled to a substrate and positioned to face the first coil (2812).

[0137] The first coil (2812) may be spaced apart from the first magnet (2811). A predetermined spacing may be formed between the first coil (2812) and the first magnet (2811), thereby securing a space for the first holder (2300) to rotate around the first rotation axis.

[0138] The first coil (2812) can receive current. The first coil (2812) can receive a driving current having a predetermined current direction. When current is supplied to the first coil (2812), an electromagnetic force can be formed between the first coil (2812) and the first magnet (2811). According to one embodiment, the first driving unit (2810) can provide driving force to the first holder (2300) in the z-axis direction by the electromagnetic force between the first coil (2812) and the first magnet (2811). Since the first holder (2300) can convert vertical force on the second convex portion and the second receiving portion into rotational force by the first rotation axis, the first holder (2300) can rotate with respect to the first rotation axis by the first driving unit (2810).

[0139] Referring to FIG. 17, the second driving unit (2820) can provide driving force to the first holder (2300). The second driving unit (2820) can provide driving force so that the first holder (2300) rotates about a second rotation axis. To this end, the second driving unit (2820) may include a second magnet (2821) and a second coil (2822).

[0140] The second magnet (2821) may include at least one N-pole region and at least one S-pole region. For example, as shown in the drawing, the second magnet (2821) may be composed of one S-pole region and one N-pole region. As another example, the second magnet (2821) may be configured such that two S-pole regions and two N-pole regions are arranged alternately. The second coil (2822) may be composed of a metallic material through which current flows. The coil may be composed of a metallic material in the shape of a closed ring.

[0141] The second driving unit (2820) may be disposed on the first holder (2300) and the substrate. The second coil (2822) and the second magnet (2821) may be disposed on the first holder (2300) and the substrate facing each other. According to one embodiment, the second magnet (2821) may be disposed on the side wall of the first holder (2300). The second magnet (2821) may be disposed on any one of the side walls of the first holder (2300) parallel to the second rotation axis. And, the second coil (2822) may be coupled to the substrate and disposed to face the second magnet (2821). According to another embodiment, the second coil (2822) may be disposed on the side wall of the first holder (2300). The second coil (2822) may be placed on any one of the side walls of the first holder (2300) parallel to the second rotation axis. And, the second magnet (2821) may be coupled to the substrate and positioned to face the second coil (2822).

[0142] The second coil (2822) may be spaced apart from the second magnet (2821). A predetermined spacing may be formed between the second coil (2822) and the second magnet (2821), thereby securing a space for the first holder (2300) to rotate around the second rotation axis.

[0143] The second coil (2822) can receive current. The second coil (2822) can receive a driving current having a predetermined current direction. When current is supplied to the second coil (2822), an electromagnetic force can be formed between the second coil (2822) and the second magnet (2821). According to one embodiment, the second driving unit (2820) can provide driving force to the first holder (2300) in the z-axis direction by the electromagnetic force between the second coil (2822) and the second magnet (2821). Since the first holder (2300) can convert vertical force on the second convex portion and the second receiving portion into rotational force by the second rotation axis, the first holder (2300) can rotate around the second rotation axis by the second driving unit (2820).

[0144] Referring to FIG. 18, the third driving unit (2830) can provide driving force to the second holder (2500). The third driving unit (2830) can provide driving force so that the second holder (2500) rotates about the first rotation axis. To this end, the third driving unit (2830) may include a third magnet (2831) and a third coil (2832).

[0145] The third magnet (2831) may include at least one N-pole region and at least one S-pole region. For example, as shown in the drawing, the third magnet (2831) may be composed of one S-pole region and one N-pole region. As another example, the third magnet (2831) may be configured such that two S-pole regions and two N-pole regions are arranged alternately. The third coil (2832) may be composed of a metallic material through which current flows. The coil may be composed of a metallic material in the shape of a closed loop.

[0146] The third driving unit (2830) may be disposed on the second holder (2500) and the substrate. The third coil (2832) and the third magnet (2831) may be disposed on the second holder (2500) and the substrate facing each other. According to one embodiment, the third magnet (2831) may be disposed on the side wall of the second holder (2500). The third magnet (2831) may be disposed on any one of the side walls of the second holder (2500) parallel to the first rotation axis. And, the third coil (2832) may be coupled to the substrate and disposed to face the third magnet (2831). According to another embodiment, the third coil (2832) may be disposed on the side wall of the second holder (2500). The third coil (2832) may be placed on any one of the side walls of the second holder (2500) parallel to the first rotation axis. And, the third magnet (2831) may be coupled to the substrate and positioned to face the third coil (2832).

[0147] The third coil (2832) may be spaced apart from the third magnet (2831). A predetermined spacing may be formed between the third coil (2832) and the third magnet (2831), thereby securing a space for the second holder (2500) to rotate around the first rotation axis.

[0148] The third coil (2832) can receive current. The third coil (2832) can receive a driving current having a predetermined current direction. When current is supplied to the third coil (2832), an electromagnetic force can be formed between the third coil (2832) and the third magnet (2831). According to one embodiment, the third driving unit (2830) can provide driving force to the second holder (2500) in the z-axis direction by the electromagnetic force between the third coil (2832) and the third magnet (2831). Since the second holder (2500) can convert vertical force on the second convex portion and the second receiving portion into rotational force by the first rotation axis, the second holder (2500) can rotate with respect to the first rotation axis by the third driving unit (2830).

[0149] Referring to FIG. 18, the fourth driving unit (2840) can provide driving force to the second holder (2500). The fourth driving unit (2840) can provide driving force so that the second holder (2500) rotates about a second rotation axis. To this end, the fourth driving unit (2840) may include a fourth magnet (2841) and a fourth coil (2842).

[0150] The fourth magnet (2841) may include at least one N-pole region and at least one S-pole region. For example, as shown in the drawing, the fourth magnet (2841) may be composed of one S-pole region and one N-pole region. As another example, the fourth magnet (2841) may be configured such that two S-pole regions and two N-pole regions are arranged alternately. The fourth coil (2842) may be composed of a metallic material through which current flows. The coil may be composed of a closed-loop metallic material.

[0151] The fourth driving unit (2840) may be disposed on the second holder (2500) and the substrate. The fourth coil (2842) and the fourth magnet (2841) may be disposed on the second holder (2500) and the substrate facing each other. According to one embodiment, the fourth magnet (2841) may be disposed on the side wall of the second holder (2500). The fourth magnet (2841) may be disposed on any one of the side walls of the second holder (2500) parallel to the second rotation axis. And, the fourth coil (2842) may be coupled to the substrate and disposed to face the fourth magnet (2841). According to another embodiment, the fourth coil (2842) may be disposed on the side wall of the second holder (2500). The fourth coil (2842) may be placed on one of the side walls of the second holder (2500) parallel to the second rotation axis. And, the fourth magnet (2841) may be coupled to the substrate and positioned to face the fourth coil (2842).

[0152] The fourth coil (2842) may be spaced apart from the fourth magnet (2841). A predetermined spacing may be formed between the fourth coil (2842) and the fourth magnet (2841), thereby securing a space for the second holder (2500) to rotate around the second rotation axis.

[0153] The fourth coil (2842) can receive current. The fourth coil (2842) can receive a driving current having a predetermined current direction. When current is supplied to the fourth coil (2842), an electromagnetic force can be formed between the fourth coil (2842) and the fourth magnet (2841). According to one embodiment, the fourth driving unit (2840) can provide driving force to the second holder (2500) in the z-axis direction by the electromagnetic force between the fourth coil (2842) and the fourth magnet (2841). Since the second holder (2500) can convert vertical force on the second convex portion and the second receiving portion into rotational force by the second rotation axis, the second holder (2500) can rotate around the second rotation axis by the fourth driving unit (2840).

[0154] Referring to FIG. 19, the first drive unit (2810) and the third drive unit (2830) may be positioned facing each other. The second drive unit (2820) and the fourth drive unit (2840) may be positioned in the same direction. As the first drive unit (2810) and the third drive unit (2830) are positioned symmetrically relative to each other, there is an advantage in that the weight balance of the first camera actuator can be maintained. Also, as the second drive unit (2820) and the fourth drive unit (2840) are positioned in the same direction relative to each other, there is an advantage in that the weight balance with the optical member and the optical path changing member can be maintained, and the volume of the camera actuator can be reduced.

[0155] FIG. 20 is a perspective view of a mobile terminal to which a camera device according to an embodiment of the present invention is applied.

[0156] Referring to FIG. 20, the mobile terminal (1500) of the embodiment may include a camera device (1000), a flash module (1530), and an autofocus device (1510) provided on the rear.

[0157] The camera device (1000) may include an image capturing function and an autofocus function. For example, the camera device (1000) may include an autofocus function using an image.

[0158] The camera device (1000) processes still image or video frame obtained by an image sensor in shooting mode or video call mode.

[0159] The processed image frame may be displayed on a designated display unit and stored in memory. A camera (not shown) may also be placed on the front of the mobile terminal body.

[0160] For example, the camera device (1000) may include a first camera device (1000A) and a second camera device (1000B), and the first camera device (1000A) may enable the implementation of AF or zoom functions along with OIS. Additionally, AF, zoom, and OIS functions may be performed by the second camera device (1000B). In this case, since the first camera device (1000A) includes both the first camera actuator and the second camera actuator described above, the miniaturization of the camera device can be easily achieved through a change in the light path.

[0161] The flash module (1530) may include a light-emitting element that emits light internally. The flash module (1530) may be operated by the operation of the camera of the mobile terminal or by the control of the user.

[0162] The autofocus device (1510) may include one of the packages of surface light-emitting laser elements as a light-emitting part.

[0163] The autofocus device (1510) may include an autofocus function using a laser. The autofocus device (1510) may be mainly used in conditions where the autofocus function using the image of the camera device (1000) is degraded, such as in a close distance of 10m or less or in a dark environment.

[0164] The autofocus device (1510) may include a light-emitting part comprising a vertical cavity surface-emitting laser (VCSEL) semiconductor device and a light-receiving part that converts light energy into electrical energy, such as a photodiode.

[0165] FIG. 21 is a perspective view of a vehicle to which a camera device according to an embodiment of the present invention is applied.

[0166] For example, FIG. 21 is an exterior view of a vehicle equipped with a vehicle driving assistance device to which a camera device (1000) according to an embodiment of the present invention is applied.

[0167] Referring to FIG. 21, the vehicle (700) of the embodiment may be equipped with wheels (13FL, 13FR) that rotate by a power source and a predetermined sensor. The sensor may be a camera sensor (3000), but is not limited thereto.

[0168] The camera (3000) may be a camera sensor to which the camera device (1000) according to the embodiment is applied. The vehicle (700) of the embodiment may acquire image information through a camera sensor (3000) that captures a front image or a surrounding image, and may determine a situation where a lane is not identified using the image information and generate a virtual lane when it is not identified.

[0169] For example, a camera sensor (3000) captures the front of a vehicle (700) to obtain a front image, and a processor (not shown) can obtain image information by analyzing objects included in the front image.

[0170] For example, if objects such as a median strip, curb, or roadside tree corresponding to a lane, adjacent vehicle, driving obstruction, and indirect road marking are captured in an image captured by the camera sensor (3000), the processor can detect these objects and include them in the image information. At this time, the processor can obtain distance information with respect to the objects detected through the camera sensor (3000) to further supplement the image information.

[0171] The image information may be information about an object captured in the image. Such a camera sensor (3000) may include an image sensor and an image processing module.

[0172] The camera sensor (3000) can process still images or videos obtained by an image sensor (e.g., CMOS or CCD).

[0173] The image processing module can process still images or videos acquired through an image sensor to extract necessary information and transmit the extracted information to a processor.

[0174] At this time, the camera sensor (3000) may include a stereo camera to improve the measurement accuracy of the object and to obtain more information such as the distance between the vehicle (700) and the object, but is not limited thereto.

[0175] Although the invention has been described above with reference to embodiments, this is merely illustrative and does not limit the invention. Those skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments may be modified and implemented. Furthermore, differences related to such modifications and applications should be interpreted as being included within the scope of the invention as defined in the appended claims. Explanation of the symbols

[0176] 2000: 1st camera actuator 2100 : Housing 2200 : Optical component 2300: 1st holder 2400 : Optical path change component 2500 : 2nd holder 2600 : Case 2700 : Substrate 2800 : Drive unit

Claims

Claim 1 A camera actuator comprising: a housing; a first holder disposed within the housing and including an optical member; a second holder disposed within the housing and including an optical path changing member disposed within the first holder and changing the optical path of light incident through the optical member; a case disposed within the housing and accommodating the first holder; and a driving unit providing driving force to the first holder and the second holder; wherein the first holder and the second holder rotate with respect to a first rotation axis and a second rotation axis perpendicular to the first rotation axis, and the second holder includes a first convex portion protruding toward the first holder side having a predetermined radius of curvature. Claim 2 In claim 1, the first rotation axis and the second rotation axis intersect each other to form an intersection point in a camera actuator. Claim 3 In paragraph 2, the above intersection is a camera actuator formed on the reflective surface of the optical path changing member. Claim 4 In paragraph 3, the first convex portion is disposed on a first opposing surface opposite to a first seating surface on which the optical path changing member is seated, and is a camera actuator having a predetermined radius of curvature centered on the intersection point. Claim 5 In paragraph 4, the camera actuator comprises a first holder having a second mounting surface on which a first opposing surface of the second holder is mounted, and a first receiving portion that accommodates the first convex portion on the second mounting surface. Claim 6 In claim 5, the first receiving portion includes first to fourth supporting surfaces in contact with the first convex portion, the first supporting surface is opposite to the third supporting surface in the direction of the first rotation axis, and the second supporting surface is opposite to the fourth supporting surface in the direction of the second rotation axis, forming a camera actuator. Claim 7 In claim 5, the first holder is a camera actuator comprising a second convex portion having a predetermined radius of curvature centered on the intersection point on a second opposing surface facing the second seating surface. Claim 8 In claim 7, the case comprises a third mounting surface on which the second opposing surface of the first holder is mounted, and a second receiving portion that accommodates the second convex portion on the third mounting surface, forming a camera actuator. Claim 9 In claim 8, the second receiving portion includes fifth to eighth supporting surfaces in contact with the second convex portion, the fifth supporting surface is opposite to the seventh supporting surface in the direction of the first rotation axis, and the sixth supporting surface is opposite to the eighth supporting surface in the direction of the second rotation axis, forming a camera actuator. Claim 10 A camera actuator according to claim 1, wherein the driving unit comprises: a first driving unit that provides a driving force to cause the first holder to rotate about the first rotation axis; a second driving unit that provides a driving force to cause the first holder to rotate about the second rotation axis; a third driving unit that provides a driving force to cause the second holder to rotate about the first rotation axis; and a fourth driving unit that provides a driving force to cause the second holder to rotate about the second rotation axis. Claim 11 In claim 10, the first driving unit and the third driving unit are arranged facing each other, and the second driving unit and the fourth driving unit are arranged in the same direction, forming a camera actuator. Claim 12 A camera device comprising: a first camera actuator; a second camera actuator disposed above the first camera actuator; and an image sensor; wherein the first camera actuator comprises: a housing; a first holder disposed within the housing and including an optical member; a second holder disposed within the housing and disposed within the first holder and including an optical path changing member that changes the optical path of light incident through the optical member; a case disposed within the housing and accommodating the first holder; and a driving unit that provides driving force to the first holder and the second holder; wherein the first holder and the second holder rotate with respect to a first rotation axis and a second rotation axis perpendicular to the first rotation axis, and the second holder includes a first convex portion protruding toward the first holder side having a predetermined radius of curvature. Claim 13 A camera actuator comprising: an optical member; a first holder that is rotatable independently about a plurality of rotation axes and accommodates the optical member; a light path changing member disposed above the optical member and changing the light path of light incident through the optical member; a second holder that is rotatable independently about the plurality of rotation axes and accommodates the light path changing member; and a driving unit that provides a driving force to each of the first holder and the second holder to rotate independently about the plurality of rotation axes; wherein the second holder includes a first convex portion protruding toward the first holder side having a predetermined radius of curvature.

Images