Camera actuator and camera module comprising same

Abstract

Disclosed in an embodiment is a camera module comprising: a first camera actuator on which light is incident; a second camera actuator disposed at the rear end of the first camera actuator; and an image sensor for receiving the light having passed through the second camera actuator, wherein the first camera actuator comprises: a first lens assembly on which the light is incident; a first prism for reflecting light having passed through the first lens assembly and changing a path of the light; and a second lens assembly through which the light reflected by the first prism passes.

Description

Camera actuator and camera module including the same

[0001] The embodiment relates to a camera actuator and a camera module including the same.

[0002] A camera is a device that captures images or videos of a subject, and is installed in portable devices, drones, vehicles, etc. Camera modules may have an image stabilization (IS) function that compensates for or prevents image shaking caused by the user's movements to improve image quality, an auto focusing (AF) function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens, and a zooming function that increases or decreases the magnification of a distant subject and captures it using a zoom lens.

[0003] The embodiment provides a camera actuator capable of improving the driving stability of a lens and a camera module including the same.

[0004] In addition, a camera actuator capable of increasing the driving range of a lens and a camera module including the same are provided.

[0005] In addition, a camera actuator with increased lens driving efficiency and a camera module including the same are provided.

[0006] Additionally, a camera actuator capable of reducing size and a camera module including the same are provided.

[0007] The problem to be solved in the embodiment is not limited to this, and it can be said that the purpose or effect that can be understood from the solution or embodiment of the problem described below is also included.

[0008] A camera module according to an embodiment includes a first camera actuator through which light is incident; a second camera actuator disposed at a rear end of the first camera actuator; and an image sensor that receives light passing through the second camera actuator. The first camera actuator may include a first lens assembly through which the light is incident, a first prism that reflects the light passing through the first lens assembly to change its path, and a second lens assembly through which the light reflected by the first prism passes.

[0009] The first lens assembly includes a plurality of lenses whose optical axis direction is a first direction, the image sensor is arranged perpendicular to the first direction, and the first camera actuator and the second camera actuator can be arranged in a second direction perpendicular to the first direction.

[0010] The second camera actuator includes a second prism, and the second prism can rotate in the first direction or in a third direction perpendicular to the first direction and the second direction.

[0011] The light incident surface of the first prism may be parallel to the light exit surface of the second prism.

[0012] The first camera actuator may include a first housing, the first lens assembly may be disposed on the outside of the first housing, and the first prism and the second lens assembly may be disposed on the inside of the first housing.

[0013] The first housing may include a prism mounting surface for fixing the first prism and a first rail along which the second lens assembly moves.

[0014] The second lens assembly may be positioned between the first prism and the second prism.

[0015] The second prism may overlap the image sensor in the first direction.

[0016] The first housing includes a first opening adjacent to the first lens assembly, and the first opening can overlap the prism mounting surface in the first direction.

[0017] The second lens assembly includes a first drive rail, and the first drive rail can face the first rail.

[0018] The second lens assembly may include a second drive rail spaced apart from the first drive rail.

[0019] The second drive rail may be spaced apart from the first drive rail in the third direction.

[0020] The second drive rail may be spaced apart from the plurality of lenses of the second lens assembly in the first direction.

[0021] The first drive rail may include a plurality of rails spaced apart from each other in the optical axis direction of the plurality of lenses of the second lens assembly.

[0022] The second camera actuator includes a moving plate and a mover rigid for rotation of the second prism, and the moving plate and the mover rigid may not overlap with the first lens assembly in the first direction or the second direction.

[0023] A camera actuator according to an embodiment includes a first housing; a first lens assembly through which light is incident; a first prism for reflecting light passing through the first lens assembly; and a second lens assembly for passing light reflected by the first prism, wherein the optical axis direction of a plurality of lenses of the first lens assembly is a first direction, and the optical axis direction of a plurality of lenses of the second lens assembly can form a first angle with a second direction perpendicular to the first direction.

[0024] The first prism includes a first reflective surface that reflects the light, and the first reflective surface can reflect light incident in the first direction in the optical axis direction of a plurality of lenses of the second lens assembly.

[0025] The first prism includes a first exit surface through which the light is emitted, and the first exit surface can be perpendicular to the optical axis direction of the plurality of lenses of the second lens assembly.

[0026] The second lens assembly is disposed inside the first housing, and the first housing includes a first side surface through which light is incident and on which the first lens assembly is disposed, and the optical axis direction of the plurality of lenses of the second lens assembly may not be parallel to the first side surface of the first housing.

[0027] The first prism may include a first incident surface onto which the light is incident and a first cutting surface parallel to the first incident surface and spaced apart from the first incident surface in the first direction.

[0028] The area of ​​the first cut surface is smaller than the area of ​​the first incident surface, and the first cut surface may include an area that does not overlap with the first incident surface in the first direction.

[0029] The first incident surface and the first cutting surface of the first prism may be perpendicular to the first direction.

[0030] The first angle may be 4˚ to 6˚.

[0031] A camera module according to an embodiment may include the camera actuator; a second camera actuator coupled to the camera actuator; and an image sensor receiving light emitted from the second camera actuator.

[0032] The second camera actuator includes a second prism that reflects light passing through the second lens assembly, and the image sensor can receive light reflected by the second prism.

[0033] The second prism includes a second incident surface onto which light passing through the second lens assembly is incident, and the second incident surface is parallel to the first exit surface of the first prism and can form the first direction and the first angle.

[0034] The second prism includes a second reflective surface that reflects the light, and the second reflective surface can be parallel to the first reflective surface of the first prism.

[0035] The second prism includes a second exit surface through which the light is emitted, and the second exit surface can be perpendicular to the first direction.

[0036] The second camera actuator includes a mover that fixes the second prism, the mover includes an inclined surface that contacts the second reflective surface of the second prism, and the inclined surface of the mover can be parallel to the first reflective surface of the first prism.

[0037] The image sensor may be overlapped with the second prism and the mover in the first direction.

[0038] According to an embodiment, a camera actuator capable of improving the driving stability of a lens and a camera module including the same can be provided.

[0039] In addition, a camera actuator capable of increasing the driving range of a lens and a camera module including the same can be provided.

[0040] In addition, a camera actuator with increased lens driving efficiency and a camera module including the same can be provided.

[0041] Additionally, a camera actuator capable of reducing size and a camera module including the same can be provided.

[0042] The various advantageous and beneficial effects of the present invention are not limited to the above-described contents, and will be more easily understood in the course of explaining specific embodiments of the present invention.

[0043] Fig. 1 is a perspective view of a camera module according to an embodiment;

[0044] Figure 2 is an exploded perspective view of a camera module according to an embodiment;

[0045] Fig. 3 is a cross-sectional view of the camera module cut along line AA' in Fig. 1.

[0046] Figure 4 is an exploded perspective view of a first camera actuator according to an embodiment;

[0047] Fig. 5 is a bottom view of a first camera actuator according to an embodiment;

[0048] Fig. 6 is a cross-sectional view of the first camera actuator taken along line BB' in Fig. 5.

[0049] Fig. 7 is a front view of the first housing of the first camera actuator according to the embodiment;

[0050] FIG. 8 is a side view of a first housing of a first camera actuator according to an embodiment;

[0051] FIG. 9 is a bottom view of a first housing of a first camera actuator according to an embodiment;

[0052] FIG. 10 is a perspective view showing a portion of a first housing of a first camera actuator according to an embodiment;

[0053] FIG. 11 is a perspective view showing a cutaway view of a first housing and a part of a first prism of a first camera actuator according to an embodiment;

[0054] FIG. 12 is a perspective view of a second lens assembly of a first camera actuator according to an embodiment;

[0055] FIGS. 13 and 14 are side views of a second lens assembly of a first camera actuator according to an embodiment;

[0056] FIGS. 15 and 16 are perspective views of a second lens assembly of a first camera actuator according to another embodiment;

[0057] Fig. 17 is a perspective view of a second camera actuator according to an embodiment;

[0058] Fig. 18 is an exploded perspective view of a second camera actuator according to an embodiment;

[0059] Fig. 19 is a cross-sectional view of the second camera actuator cut along CC' in Fig. 17,

[0060] Fig. 20 is a cross-sectional view of the second camera actuator and circuit board cut along line DD' in Fig. 17.

[0061] Fig. 21 is a perspective view of a second housing of a second camera actuator according to an embodiment;

[0062] Fig. 22 is a reference drawing for explaining a camera module according to an embodiment;

[0063] Figures 23 to 25 are drawings showing the light path of a camera module according to another embodiment.

[0064] Fig. 26 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0065] Fig. 27 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0066] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0067] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0068] In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0069] Additionally, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention.

[0070] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0071] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

[0072] These terms are intended only to distinguish one component from another, and are not intended to limit the nature, order, or sequence of the component.

[0073] And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, it may include not only cases where the component is directly connected, coupled or connected to the other component, but also cases where the component is 'connected', 'coupled' or 'connected' by another component between the component and the other component.

[0074] Additionally, when described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below", it can include the meaning of a downward direction as well as an upward direction based on one component.

[0075] FIG. 1 is a perspective view of a camera module according to an embodiment, FIG. 2 is an exploded perspective view of a camera module according to an embodiment, and FIG. 3 is a cross-sectional view of a camera module according to an embodiment.

[0076] Referring to FIGS. 1 and 2, a camera module (1000) according to an embodiment may be composed of a cover (not shown), a first camera actuator (1100), a second camera actuator (1200), and a circuit board (1300). Here, the first camera actuator (1100) may be used interchangeably as a first actuator, and the second camera actuator (1200) may be used interchangeably as a second actuator.

[0077] A cover (not shown) can cover the first camera actuator (1100) and the second camera actuator (1200). The cover can improve the bonding strength between the first camera actuator (1100) and the second camera actuator (1200). Furthermore, the cover can be made of a material that blocks electromagnetic waves. Accordingly, the first camera actuator (1100) and the second camera actuator (1200) within the cover can be easily protected.

[0078] The first camera actuator (1100) may be a zoom actuator or an auto focus (AF) actuator. For example, the first camera actuator (1100) may support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an auto focus function or a zoom function. For example, one or more lenses may move independently or individually along the optical axis direction. Thus, zoom or auto focus may be implemented.

[0079] The second camera actuator (1200) may be an OIS (Optical Image Stabilizer) actuator. For example, the second camera actuator (1200) may rotate an optical element in a direction perpendicular to the optical axis (axis of incident light).

[0080] The second camera actuator (1200) may include a fixed focal length lens arranged in a predetermined barrel (not shown). The fixed focal length lens may also be referred to as a “single focal length lens” or “single lens.”

[0081] The second camera actuator (1200) can change the path of light. In an embodiment, the second camera actuator (1200) can change the path of light through an internal optical member (e.g., a prism or a mirror). The optical member can change the path of light by a predetermined angle. For example, the optical member can change the path of light in a first direction. Or, the optical member can change the light from a first axis to a second axis. By 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 inside the mobile terminal through the change of the path of light, thereby performing magnification, auto-focusing (AF), zoom, and OIS functions.

[0082] The second camera actuator (1200) may be positioned behind the first camera actuator (1100). The second camera actuator (1200) may be coupled to the first camera actuator (1100). The coupling between the two may be achieved in various ways.

[0083] The circuit board (1300) may be coupled to the second camera actuator (1200). The circuit board (1300) may be electrically connected to the second camera actuator (1200) and the first camera actuator (1100). In addition, there may be a plurality of circuit boards (1300). An image sensor (IS) that receives light may be arranged on the circuit board (1300).

[0084] A camera module according to an embodiment may be comprised of a single or multiple camera modules. For example, the multiple camera modules may include a first camera module and a second camera module.

[0085] And the first camera module may include a single or multiple actuators. For example, the first camera module may include a first camera actuator (1100) and a second camera actuator (1200).

[0086] And the second camera module may be placed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving a lens unit. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, etc., and may be applied in various ways such as an electrostatic method, a thermal method, a bimorph method, an electrostatic force method, etc., but is not limited thereto. In addition, the camera actuator in this specification may be referred to as an actuator, etc. In addition, a camera module composed of a plurality of camera modules may be mounted in various electronic devices such as a mobile terminal. Furthermore, the actuator may be a device that moves or tilts a lens or an optical member. However, below, the actuator is described as a concept including a lens or an optical member. Furthermore, the actuator may be called a 'lens transport device', 'lens transport device', 'optical member transport device', 'optical member moving device', etc.

[0087] Referring to FIG. 3, a camera module according to an embodiment may include a first camera actuator (1100) having a zooming function and an AF (Auto-Focusing) function, and a second camera actuator (1200) having an OIS function.

[0088] Light can be incident into the camera module or the first camera actuator through an opening area located on the upper surface of the first camera actuator (1100). That is, the light is initially incident into the interior of the first camera actuator (1100) along a vertical direction (e.g., X-axis direction, based on incident light), and the light path can be changed through an optical member. Then, the light can pass through the second camera actuator (1200) and be incident onto an image sensor (IS) located at one end of the second camera actuator (1200).

[0089] In this specification, the first direction may refer to the optical axis direction of the lens of the first lens assembly of the first camera actuator (1100). In addition, the first direction may be the direction of the first rotation axis of the prism of the second camera actuator (1200). The second direction is a direction perpendicular to the first direction and may be the direction of the long axis of the camera module (1000). That is, the second direction may be a direction from the first camera actuator (1100) toward the second camera actuator (1200). The third direction is a direction perpendicular to the first direction and the second direction and may be the direction of the second rotation axis of the prism of the second camera actuator (1200).

[0090] In this specification, the bottom side means one side in the second direction. And the first direction is the X-axis direction in the drawing and can be used interchangeably with the second axis direction, etc. The second direction is the Z-axis direction in the drawing and can be used interchangeably with the first axis direction, etc. The second direction is a direction perpendicular to the first direction. In addition, the third direction is the Y-axis direction in the drawing and can be used interchangeably with the third axis direction, etc. And the third direction is a direction perpendicular to both the first direction and the second direction.

[0091] And by this configuration, the camera module 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 module according to the embodiment can expand the light path while minimizing the thickness of the camera module in response to the change in the light path. Furthermore, it should be understood that the first camera actuator can also provide a high range of magnification by controlling the focus, etc. in the expanded light path.

[0092] The first camera actuator (1100) may include an optical system and a lens driving unit. For example, the first camera actuator (1100) may include at least one of a first lens assembly, a second lens assembly, and a third lens assembly. In addition, the first camera actuator (1100) may include a coil and a magnet to perform a high-magnification zooming function and an autofocus function. For example, the first lens assembly may be a fixed lens, and the second lens assembly may be a moving lens that moves by means of a coil, a magnet, and a guide pin, but is not limited thereto.

[0093] In addition, the camera module according to the embodiment can implement OIS by controlling the optical path through the second camera actuator, thereby minimizing the occurrence of decent or tilt phenomena and producing the best optical characteristics.

[0094] Meanwhile, when an actuator for OIS and an actuator for AF / Zoom are arranged according to an embodiment of the present invention, magnetic interference with the magnet for AF / Zoom can be prevented when the OIS is driven. Since the driving magnet of the second camera actuator (1200) is arranged separately from the first camera actuator (1100), magnetic interference between the second camera actuator (1200) and the first camera actuator (1100) can be prevented. In this specification, OIS can be used interchangeably with terms such as shake correction, optical image stabilization, optical image correction, and shake correction.

[0095] In particular, the optical member in the second camera actuator (1200) can be tilted in the X-axis or Y-axis. Accordingly, the optical path can be easily changed according to the X-axis tilt or Y-axis tilt.

[0096] The optical member may be mounted on a holder of the second camera actuator, etc. In an embodiment, the optical member may be formed of a mirror or a prism. In the following description, a prism is illustrated as a reference, but it may also be formed of a plurality of lenses as in the above-described embodiment. Alternatively, the optical member may be formed of a plurality of lenses and a prism or mirror. In addition, the optical member may include a reflector disposed therein. However, the present invention is not limited thereto.

[0097] By driving a VCM or the like in the second camera actuator (1200), the optical member can be tilted in the X-axis or Y-axis. That is, OIS can be implemented while the optical member is tilted or rotated based on the Y-axis direction or the X-axis direction.

[0098] FIG. 4 is an exploded perspective view of a first camera actuator according to an embodiment, FIG. 5 is a bottom view of a first camera actuator according to an embodiment, and FIG. 6 is a cross-sectional view of a first camera actuator according to an embodiment.

[0099] Referring to FIGS. 1 to 6, the first camera actuator (1100) may include a first housing (1110), a first lens assembly (1120), a second lens assembly (1130), a first prism (1140), and a first driving unit (1150).

[0100] The first housing (1110) may constitute an outer wall of the first camera actuator (1100). A second lens assembly (1130), a first prism (1140), and a first driving unit (1150) may be disposed on the inside of the first housing (1110). A first lens assembly (1120) may be disposed on the outside of the first housing (1110). The first housing (1110) may include an opening for light to enter or exit. The first housing (1110) may include a first side (S1), a second side (S2), and a third side (S3). The first side (S1) of the first housing (1110) may be a surface through which light enters the first housing (1110).

[0101] FIG. 7 is a front view of a first housing of a first camera actuator according to an embodiment, FIG. 8 is a side view of a first housing of a first camera actuator according to an embodiment, FIG. 9 is a bottom view of a first housing of a first camera actuator according to an embodiment, FIG. 10 is a cutaway perspective view of a portion of a first housing of a first camera actuator according to an embodiment, and FIG. 11 is a cutaway perspective view of a portion of a first housing and a first prism of a first camera actuator according to an embodiment.

[0102] Referring to FIGS. 4 to 11, the first housing (1110) may include a first opening (1111), a prism mounting surface (1112), a first rail (R1), a second rail (R2), a first driving groove (1113), a first side groove (1114), a second side groove (1115), and a prism fixing portion (1116, 1117).

[0103] The first opening (1111) may be arranged on a first side (S1) of the first housing (1110). The first side (S1) of the first housing (1110) may be a surface arranged in a direction in which light is incident. The first side (S1) of the first housing (1110) may be a surface on which the first lens assembly (1120) is arranged. Light may enter the interior of the first camera actuator (1100) through the first opening (1111). The first opening (1111) may overlap with a plurality of lenses of the first lens assembly (1120) in a first direction. The light may pass through the plurality of lenses of the first lens assembly (1120) and pass through the first opening (1111). The first opening (1111) may include, but is not limited to, a rectangular opening. For example, the first opening (1111) may include a circular opening. The first opening (1111) may overlap the prism mounting surface (1112) in a first direction. A width of the first opening (1111) in a second direction perpendicular to the first direction may be greater than a width of the prism mounting surface (1112) in the second direction. The width of the first opening (1111) in the second direction may be less than a maximum width of the first barrel (1124) of the first lens assembly (1120) in the second direction.

[0104] The prism mounting surface (1112) may be disposed on the inside of the first housing (1110). The prism mounting surface (1112) may be a surface on which the first prism (1140) is disposed within the first housing (1110). The prism mounting surface (1112) may form a predetermined angle with respect to the first direction. For example, the prism mounting surface (1112) may form an angle of 49° to 51° with respect to the first direction. The prism (1140) may be disposed and fixed on the prism mounting surface (1112). The prism mounting surface (1112) may be disposed at a position overlapping the first opening (1111) in the first direction. The prism mounting surface (1112) may come into contact with a reflective surface on which light of the first prism (1140) is reflected. The prism mounting surface (1112) may overlap with the second lens assembly (1130) in the second direction. The width of the prism mounting surface (1112) in the first direction or the second direction may be smaller than the width of the light-reflecting surface of the first prism (1140) in the first direction or the second direction.

[0105] The first rail (R1) and the second rail (R2) may be a path along which the second lens assembly (1130) moves. The first rail (R1) and the second rail (R2) may include a shape in which a portion of the inner surface of the first housing (1110) is sunken in a direction perpendicular to the inner surface. The first rail (R1) and the second rail (R2) may extend along the moving direction of the second lens assembly (1130). The moving direction of the second lens assembly (1130) may be a fourth direction. Here, the fourth direction may refer to the optical axis direction of the plurality of lenses of the second lens assembly (1130). The first rail (R1) and the second rail (R2) may be arranged on different sides of the first housing (1110). The first rail (R1) may be arranged on the inner side of the second side (S2) of the first housing (1110), and the second rail (R2) may be arranged on the inner side of the second side (S2) of the first housing (1110). A second lens assembly (1130) may be arranged between the first rail (R1) and the second rail (R2). The first rail (R1) and the second rail (R2) may face the first driving rail portion (1134a) and the second driving rail portion (1134b) of the second lens assembly (1130), respectively. A plurality of balls (not shown) for driving the second lens assembly (1130) may be arranged between the first rail (R1) and the second rail (R2) and the first driving rail portion (1134a) and the second driving rail portion (1134b). The first rail (R1) and the second rail (R2) may have a shape including a plurality of inclined surfaces, but are not limited thereto.

[0106] The first driving groove (1113), the first side groove (1114), and the second side groove (1115) may be grooves arranged on the side of the first housing (1110). The first driving groove (1113) and the first side groove (1114) may be arranged on the second side (S2) of the first housing (1110). The second side groove (1115) may be arranged on the third side (S3) of the first housing (1110). The first driving groove (1113) may be a groove for smoothly driving the second lens assembly (1130). The first driving groove (1113) may be arranged between the first coil (1151) of the first driving unit (1150) and the second lens assembly (1130). The first side groove (1114) and the second side groove (1115) may each include a recessed shape with a predetermined width from the outermost side to the inner side of the second side (S2) and the third side (S3) of the first housing (1110), respectively. A first coil (1151) of the first driving unit (1150) may be placed in the first side groove (1114).

[0107] The prism fixing portions (1116, 1117) may be arranged at both ends of the prism mounting surface (1112). The prism mounting surface (1112) may be arranged between the two prism fixing portions (1116, 1117). The two prism fixing portions (1116, 1117) may be arranged to be spaced apart from each other in a third direction. The prism fixing portions (1116, 1117) may have a constant width in the first direction and the third direction. The prism fixing portions (1116, 1117) may protrude inwardly from the inner surface of the first housing (1110). The prism fixing portions (1116, 1117) may not overlap the first opening (1111) in the first direction. The prism fixing part (1116, 1117) can stably fix the first prism (1140) together with the prism mounting surface (11120).

[0108] The first lens assembly (1120) may be disposed on the outside of the first housing (1110). Light may enter the interior of the first camera actuator (1100) through the first lens assembly (1120). The first lens assembly (1120) may be disposed on one surface of the first housing (1110). The first lens assembly (1120) may include a plurality of lenses and a barrel for fixing the plurality of lenses. The plurality of lenses of the first lens assembly (1120) may include a first lens (1121), a second lens (1122), and a third lens (1123). The first lens (1121), the second lens (1122), and the third lens (1123) may include the same optical axis. The optical axes of the plurality of lenses of the first lens assembly (1120) may be formed in the first direction. In addition, the first lens assembly (1120) may include a first barrel (1124) for fixing a plurality of lenses. The plurality of lenses may be fixed to the inside of the first barrel (1124). The first barrel (1124) may be coupled to a first side (S1) of the first housing (1110). The first barrel (1124) may include a first barrel support (1124a). The first barrel (1124) may be fixed on an outer surface of the first housing (1110) through the first barrel support (1124a). The first barrel support (1124a) may protrude in a direction perpendicular to the first direction from the outside of the first barrel (1124). Accordingly, the contact surface with the first housing (1110) may be expanded, and light may be prevented from leaking through the first opening (1111) of the first housing (1110). Additionally, the first lens assembly (1120) may include a plurality of cover films, spacers, and retainers for fixing the lens and preventing light leakage.

[0109] FIG. 12 is a perspective view of a second lens assembly of a first camera actuator according to an embodiment, and FIGS. 13 and 14 are side views of a second lens assembly of a first camera actuator according to an embodiment.

[0110] Referring to FIGS. 4 to 6 and 12 to 14, the second lens assembly (1130) may be arranged inside the first housing (1110) to perform AF. The second lens assembly (1130) may include a plurality of lenses. The second lens assembly (1130) may move along the optical axis direction of the plurality of lenses. The second lens assembly (1130) may move inside the first housing (1110) by the first driving unit (1150). The plurality of lenses of the second lens assembly (1130) may include a fourth lens (1131), a fifth lens (1132), and a sixth lens (1133). The fourth lens (1131), the fifth lens (1132), and the sixth lens (1133) may include the same optical axis. The second lens assembly (1130) can move along the optical axis direction of the fourth lens (1131), the fifth lens (1132), and the sixth lens (1133). The second lens assembly (1130) can include a second barrel (1134) that fixes a plurality of lenses. The plurality of lenses can be fixed to the inside of the second barrel (1134). The second barrel (1134) can include a first drive rail portion (1134a) and a second drive rail portion (1134b). The first drive rail portion (1134a) and the second drive rail portion (1134b) can be arranged on the side of the second barrel (1134). In addition, the first drive rail portion (1134a) can extend along the optical axis direction of the plurality of lenses. That is, the first drive rail portion (1134a) can extend along the fourth direction. The width in the fourth direction of the first drive rail portion (1134a) may be greater than the width in the fourth direction of the second drive rail portion (1134b). The first drive rail portion (1134a) and the second drive rail portion (1134b) may face the first rail (R1) and the second rail (R2) of the first housing (1110), respectively. The first drive rail portion (1134a) or the second drive rail portion (1134b) may include a plurality of drive rails for driving the second lens assembly (1130).

[0111] Referring to FIG. 13, the first drive rail portion (1134a) may include first to fifth drive rails (r1, r2, r3, r4, r5). The first to fifth drive rails (r1, r2, r3, r4, r5) may be arranged to be spaced apart from each other by a predetermined distance. The first to third drive rails (r1, r2, r3) may be spaced apart in a fourth direction. The second drive rail (r2) may be arranged between the first drive rail (r1) and the third drive rail (r3). The fourth and fifth drive rails (r4, r5) may be spaced apart in the fourth direction. The first drive rail (r1) and the fourth drive rail (r4) may be spaced apart in a direction perpendicular to the fourth direction. The third drive rail (r3) and the fifth drive rail (r5) may be spaced apart in a direction perpendicular to the fourth direction. The first to fifth drive rails (r1, r2, r3, r4, r5) may include a shape that is sunken in a direction perpendicular to the first drive rail portion (1134a) from the surface of the first drive rail portion (1134a). For example, the first to fifth drive rails (r1, r2, r3, r4, r5) may include a plurality of inclined surfaces. However, the shapes of the first to fifth drive rails (r1, r2, r3, r4, r5) are not limited.

[0112] FIGS. 15 and 16 are perspective views of a second lens assembly of a first camera actuator according to another embodiment.

[0113] Referring to FIG. 15, the second lens assembly may include a driving rail portion. Referring to FIG. 15a, the second lens assembly according to an embodiment may include one driving rail portion. One driving rail portion may be disposed on one side of the second lens assembly, so that the lens assembly may be driven on one side rail. Referring to FIG. 15b, the second lens assembly according to an embodiment may include two driving rail portions. The two driving rail portions may be disposed spaced apart from each other in opposite directions of the second lens assembly. The two driving rail portions may be disposed parallel to each other. The two driving rail portions may be disposed on both sides of the second lens assembly, so that the lens assembly may be driven on both sides rail. When two driving rail portions are disposed, the direction of the driving rail portions may vary. For example, a second lens assembly according to an embodiment may include two drive rail portions, and the two drive rail portions may be arranged in a vertical direction (not shown). In this case, one drive rail portion may have a drive rail arrangement surface arranged perpendicular to a third direction, and the other drive rail portion may have a drive rail arrangement surface arranged perpendicular to a first direction. The two drive rail portions may support the second lens assembly in a mutually perpendicular direction. The two drive rail portions may be arranged perpendicular to the second lens assembly, so that the lens assembly may be rail-driven on one side or both sides. The number or position of the drive rail portions of the second lens assembly may be adjusted depending on the configuration and shape of the camera actuator according to the embodiment.

[0114] Referring to FIG. 16, the drive rail unit of the second lens assembly may include a plurality of drive rails. Referring to FIG. 16a, the drive rail unit may include four drive rails. The four drive rails may be arranged to be spaced apart from each other in the optical axis direction of the plurality of lenses of the second lens assembly or in a direction perpendicular to the optical axis direction. The shapes of the four drive rails may be the same or different from each other. The widths of the drive rails in the optical axis direction may be different from each other. When the drive rail unit includes four drive rails, the lens assembly may be supported at four points to reduce the frictional force of the ball arranged between the rails of the lens assembly and the housing. Referring to FIGS. 16b and 16c, the drive rail unit may include three drive rails. The three drive rails may be arranged to be spaced apart from each other. In this case, one drive rail may be arranged adjacent to one side of the drive rail unit, and two drive rails may be arranged adjacent to the other side of the drive rail unit. Additionally, one drive rail may be positioned adjacent to the upper portion of the drive rail section, and two drive rails may be positioned adjacent to the lower portion of the drive rail section. However, the positions of the drive rails are not limited thereto. When the drive rail section includes three drive rails, the structural balance of the lens assembly can be improved during drive, and the stability and reproducibility of the drive can be ensured.

[0115] The first prism (1140) can reflect light passing through the first lens assembly (1120). The first prism (1140) can reflect the light passing through the first lens assembly (1120) to reach the second lens assembly (1130). The first prism (1140) can be disposed inside the first housing (1110). The first prism (1140) can be disposed on the prism mounting surface (1112) of the first housing (1110). The first prism (1140) can include a reflective surface that reflects light. The reflective surface of the first prism (1140) can be disposed on the prism mounting surface (1112). The reflective surface of the first prism (1140) can form a certain angle with the first direction. Therefore, the first prism (1140) can change the path of light to reflect the light toward the second lens assembly (1130). The first prism (1140) can overlap the first lens assembly (1120) in the first direction and can overlap the second lens assembly (1130) in the second direction. In addition, the first prism (1140) can overlap the first opening (1111) of the first housing (1110) in the first direction. The first prism (1140) can improve the spatial limitation of the camera actuator by changing the path of light. Accordingly, the optical path can be expanded while minimizing the thickness of the camera module, thereby providing a high range of magnification.

[0116] The first driving unit (1150) can drive the second lens assembly (1130). The first driving unit (1150) can include a driving coil and a driving magnet (not shown). The first driving unit (1150) can move the second lens assembly (1130) in a fourth direction. The first driving unit (1150) can drive the second lens assembly (1130) in the fourth direction through the electromagnetic force of the driving coil and the driving magnet. The driving coil can be arranged in the first side groove (1114) of the first housing (1110). The driving coil can be arranged adjacent to the first driving groove (1113). The driving magnet can be arranged in the first driving rail portion (1134a) of the second lens assembly (1130). The driving coil can be arranged adjacent to the driving magnet. A first drive groove (1113) may be arranged between the drive coil and the drive magnet.

[0117] Fig. 17 is a perspective view of a second camera actuator and a circuit board according to an embodiment, and Fig. 18 is an exploded perspective view of the second camera actuator and the circuit board according to an embodiment. Fig. 19 is a cross-sectional view of the second camera actuator taken along line BB' in Fig. 17, and Fig. 20 is a cross-sectional view of the second camera actuator and the circuit board taken along line CC' in Fig. 17.

[0118] Referring to FIGS. 17 to 20, the second camera actuator (1200) may include a second housing (1210), a mover (1220), a second prism (1230), a housing rigid (1240), a mover rigid (1250), a rotation unit (1260), and a second driving unit (1270).

[0119] The second housing (1210) may constitute the outer wall of the second camera actuator (1200). A mover (1220), a second prism (1230), a housing rigid (1240), a mover rigid (1250), and a rotation unit (1260) may be arranged on the inside of the second housing (1210). A second substrate unit (1271) of a second driving unit (1270) may be arranged on the outside of the second housing (1210). The second housing (1210) may include a form in which the outside is partially open for light to enter or exit.

[0120] Figure 21 is a perspective view of the second housing of the second camera actuator.

[0121] Referring to FIGS. 17 to 21, the second housing (1210) may include a fourth side (S4), a fifth side (S5), and a sixth side (S6). The fourth side (S4), the fifth side (S5), and the sixth side (S6) of the second housing (1210) may include holes for arranging a second driving unit (1270). A driving coil or a hall sensor of the second driving unit (1270) may be arranged in the holes of the fourth side (S4), the fifth side (S5), and the sixth side (S6) of the second housing (1210). In addition, a second substrate (1271) of the second driving unit (1270) may be arranged on the outer side of the fourth side (S4), the fifth side (S5), and the sixth side (S6) of the second housing (1210). The second housing (1210) may include a seventh side (S7), an eighth side (S8), and a ninth side (S9). The seventh side (S7) of the second housing (1210) may include an open structure for placing a circuit board (1300). In addition, the eighth side (S8) of the second housing (1210) may include an open structure for allowing light emitted from the first camera actuator (1100) to enter. In addition, the ninth side (S9) of the second housing (1210) may include an open structure for placing a housing rigid (1240).

[0122] The mover (1220) may be disposed inside the second housing (1210). The mover (1220) may fix the second prism (1230). The mover (1220) may fix the second prism (1230) and rotate the second prism (1230) to perform OIS. A plurality of driving magnets of a second driving unit (1270) may be disposed on the outside of the mover (1220). The mover (1220) may be rotated in a first direction or a third direction by the second driving unit (1270). In addition, the mover (1220) may be supported by a rotating unit (1260). The mover (1220) may include an inclined surface on which the second prism (1230) is disposed. In addition, the mover (1220) may include a plurality of grooves on which the driving magnets are disposed. Additionally, the mover (1220) may include a plurality of grooves for arranging a plurality of protrusions of the moving plate (1261). The plurality of grooves for arranging a plurality of protrusions of the moving plate (1261) of the mover (1220) may include a plurality of inclined surfaces that come into contact with the plurality of protrusions. The mover (1220) may be coupled with a mover rigid (1250).

[0123] The second prism (1230) may be fixed to the mover (1220). The second prism (1230) may be disposed on the mover (1220) and may rotate with the mover (1220) in a first direction or a third direction. The second prism (1230) may reflect light passing through the first camera actuator (1100) to reach the image sensor (IS) of the circuit board (1300). The second prism (1230) may be disposed inside the second housing (1210). The second prism (1230) may overlap with the image sensor (IS) in the first direction. In addition, the second prism (1230) may overlap with the first prism (1140) and the second lens assembly (1130) in the second direction. The second prism (1230) may include a reflective surface that reflects light. The reflective surface of the second prism (1230) may be arranged on the inclined surface of the mover (1220). The inclined surface of the mover (1220) may be arranged parallel to the reflective surface of the first prism (1140) and the reflective surface of the second prism (1230).

[0124] The housing rigid (1240) may be disposed in the second housing (1210). A portion of the housing rigid (1240) may be disposed between the mover rigid (1250) and the moving plate (1261) of the rotating portion (1260). The housing rigid (1240) may be coupled to the second housing (1210) and may be a component included in the second housing (1210). A portion of the housing rigid (1240) may be disposed on the inside of the second housing (1210), and a portion of the housing rigid (1240) may protrude outwardly of the ninth side surface (S9) of the second housing (1210). A first fixed magnet (1262) of the rotating portion (1260) may be disposed on the housing rigid (1240). The housing rigid (1240) may include a groove for arranging the first fixed magnet (1261). In addition, the housing rigid (1240) may include a plurality of grooves for arranging the plurality of protrusions of the moving plate (1261). Each of the plurality of grooves for arranging the plurality of protrusions of the moving plate (1261) may include a plurality of inclined surfaces that come into contact with the plurality of protrusions.

[0125] The mover rigid (1250) can be coupled with the mover (1220). The mover rigid (1250) can be disposed on the outside of the mover (1220) and the inside of the housing (1210). A second fixed magnet (1263) of the rotating part (1260) can be disposed on the mover rigid (1250). The mover rigid (1250) can include a groove for disposing the second fixed magnet (1263). A moving plate (1261) and a portion of the housing rigid (1240) can be disposed between the mover rigid (1250) and the mover (1220). The mover rigid (1250) may not overlap with the first lens assembly (1120) in the first direction or the second direction.

[0126] The rotating part (1260) can support the mover (1220) by applying force to the mover (1220) when the mover (1220) and the second prism (1230) rotate. The rotating part (1260) can form a rotational axis of the mover (1220). The rotating part (1260) can include a moving plate (1261), a first fixed magnet (1262), and a second fixed magnet (1263). The moving plate (1261) can be in contact with the mover (1220) and the housing rigid (1240). The moving plate (1261) can be arranged between the mover (1220) and the housing rigid (1240). The moving plate (1261) can include a plurality of protrusions that are in contact with the mover (1220) and the housing rigid (1240). A plurality of protrusions of the moving plate (1261) can be respectively arranged in the grooves of the mover (1220) and the housing rigid (1240). The moving plate (1261) may not overlap with the first lens assembly (11200) in the first direction or the second direction. The first fixed magnet (1262) and the second fixed magnet (1263) may fix the mover (1220) by applying a repulsive force or an attractive force according to an electromagnetic force to each other. The first fixed magnet (1252) may be placed in the housing rigid (1240). The first fixed magnet (1252) may be placed in a groove for fixing the magnet of the housing rigid (1240). The second fixed magnet (1253) may be placed in the mover rigid (1250). The second fixed magnet (1253) may be placed in a groove for fixing the magnet of the mover rigid (1250). The first fixed magnet (1262) and the second fixed The magnets (1263) can be arranged to face each other. The first fixed magnet (1262) and the second fixed magnet (1263) can be arranged between the housing rigid (1240) and the mover rigid (1250).

[0127] The second driving unit (1270) can perform OIS driving of the second camera actuator (1200). The second driving unit (1270) can apply driving force to the mover (1220) to cause the mover (1220) and the second prism (1230) to rotate. The second driving unit (1270) can include first to third driving magnets (1271a, 1271b, 1271c), first to third driving coils (1272a, 1272b, 1272c), a second substrate (1273), a plurality of magnet yokes (1274), and a plurality of Hall sensors (1275). The first to third driving magnets (1271a, 1271b, 1271c) can rotate the mover (1220) by receiving electromagnetic force through interaction with the driving coil. The first to third driving magnets (1271a, 1271b, 1271c) can be arranged on the mover (1220). The first to third driving magnets (1271a, 1271b, 1271c) can be arranged to face the first to third driving coils (1272a, 1272b, 1272c), respectively.

[0128] The first to third drive coils (1272a, 1272b, 1272c) can apply an electromagnetic force to the drive magnet to rotate the mover (1220). The first to third drive coils (1272a, 1272b, 1272c) can be disposed on the second substrate portion (1273). The first to third drive coils (1272a, 1272b, 1272c) can be disposed on the inner side of the second substrate portion (1273). In addition, the first to third drive coils (1272a, 1272b, 1272c) can be disposed on the fourth side (S4), the fifth side (S5), and the sixth side (S6) of the second housing (1210), respectively. The first to third drive coils (1272a, 1272b, 1272c) may be placed inside the holes for arranging the coils of the fourth side (S4), fifth side (S5), and sixth side (S6) of the second housing (1210), respectively.

[0129] The second substrate portion (1273) may be disposed on the outside of the second housing (1210). The second substrate portion (1273) may be disposed on the outside of the fourth side (S4), the fifth side (S5), and the sixth side (S6) of the second housing (1210). The first to third drive coils (1272a, 1272b, 1272c) and a plurality of Hall sensors (1275) may be disposed on the second substrate portion (1273). The second substrate portion (1273) may supply power for driving the first to third drive coils (1272a, 1272b, 1272c) and the plurality of Hall sensors (1275). A plurality of magnet yokes (1274) are arranged between the mover (1220) and the first to third driving magnets (1271a, 1271b, 1271c) to fix the first to third driving magnets (1271a, 1271b, 1271c) on the mover (1220). A plurality of hall sensors (1275) are arranged inside the first to third driving coils (1272a, 1272b, 1272c) to sense the OIS operation of the mover (1220) and the second prism (1230).

[0130] A circuit board (1300) can be coupled with a second camera actuator (1200) to sense light. The circuit board (1300) can be coupled with a second housing (1210) of the second camera actuator (1200). The circuit board (1300) can be placed on a seventh side (S7) of the second housing (1210). The circuit board (1300) can include an image sensor (IS), a sensor base (1310), a PCB substrate (1320), and a filter (1330). The image sensor (IS) of the circuit board (1300) can sense light reflected by a second prism (1230). The image sensor (IS) can overlap the second prism (1230) in a first direction.

[0131] Figure 22 is a reference drawing for explaining a camera module according to an embodiment.

[0132] Referring to FIG. 22, light passing through the first lens assembly (1120) is reflected by the first prism (1140), and the light reflected by the first prism (1140) can pass through the second lens assembly (1130). In addition, light passing through the second lens assembly (1130) can be reflected by the second prism (1230) and enter the image sensor (IS). The first prism (1140) can be placed between the first lens assembly (1120) and the second lens assembly (1130) along the path of the light. In addition, the second lens assembly (1130) can be placed between the first prism (1140) and the second prism (1230). At this time, the second prism (1230) of the second camera actuator (1200) performing OIS may be arranged at the rear end of the second lens assembly (1130) performing AF. Since the second prism (1230) is arranged at the rear end of the second lens assembly (1130), the light reflected by the second prism (1230) can be directly incident on the image sensor (IS). Therefore, the second prism (1230) and the mover (1220) may overlap with the image sensor (IS) of the circuit board (1300) in the first direction, which is the direction in which the light is incident. In addition, the second camera actuator (1200) may not overlap with the first lens assembly (1120) in the first direction or the second direction. Accordingly, the second prism (1230), the mover (1220), the moving plate (1261), and the mover rigid (1250) of the second camera actuator (1200) may not overlap with the first lens assembly (1120) in the first direction or the second direction. The first camera actuator of the camera module according to the embodiment can reduce the number of parts by integrating the housing of the prism and the AF housing, and can be implemented as an optical system with a short AF section in the prism.

[0133] The first prism (1140) may include a first incident surface (1140a), a first reflective surface (1140b), and a first exit surface (1140c). The first incident surface (1140a) may be a surface on which light is incident on the first prism (1140). The first incident surface (1140a) may be arranged adjacent to the first opening (1111) of the first housing (1110). The first incident surface (1140a) may overlap the first opening (1111) in a first direction. Light passing through the first lens assembly (1120) may be incident on the first incident surface (1140a) through the first opening (1111). The first incident surface (1140a) may be arranged perpendicular to the first direction. The first reflective surface (1140b) may be a surface on which light is reflected. Light passing through the first incident surface (1140a) may be reflected on the first reflective surface (1140b). The first reflective surface (1140b) may be disposed on the prism mounting surface (1112) of the first housing (1110). The area of ​​the first reflective surface (1140b) may be larger than the area of ​​the prism mounting surface (1112). The first reflective surface (1140b) may form a certain angle with the first incident surface (1140a). The angle formed by the first reflective surface (1140b) and the first incident surface (1140a) may be less than 45°. The first reflective surface (1140b) may be disposed parallel to the prism mounting surface (1112). That is, the angle formed by the first reflective surface (1140b) and the first direction may be the same as the angle formed by the prism mounting surface (1112) and the first direction. In addition, the angle formed by the first reflective surface (1140b) and the first direction may be greater than 45°. Accordingly, the path of the light reflected on the first reflective surface (1140b) may be changed to a greater extent than that in the second direction. The first exit surface (1140c) may be a surface from which light is emitted. The light reflected on the first reflective surface (1140b) may be emitted through the first exit surface (1140c). The light emitted through the first exit surface (1140c) may be directed toward the second lens assembly (1130). The first exit surface (1140c) may be arranged perpendicular to the fourth direction.That is, the first exit surface (1140c) can form a first angle (θ) with the first direction. The first angle (θ) can be 4° to 6°. Depending on the arrangement angle of the first reflection surface (1140b) and the first exit surface (1140c) of the first prism (1140), the path of the light reflected by the first prism (1140) can be changed to an angle that is a certain angle larger than the second direction. Accordingly, the size of the prism can be reduced while reflecting all the light to reach the image sensor (IS), thereby reducing the width of the camera actuator in the first direction.

[0134] The first prism (1140) may include a first cutting plane (1140d). The first cutting plane (1140d) is disposed between the first reflective surface (1140b) and the first exit surface (1140c), and may be disposed parallel to the first incident surface (1140a). The area of ​​the first cutting plane (1140d) may be smaller than the area of ​​the first incident surface (1140a). The first cutting plane (1140d) may include an area that overlaps with the first incident surface (1140a) in the first direction and an area that does not overlap. The first prism (1140) may include the first cutting plane (1140d) to reduce the width and size in the first direction, thereby achieving miniaturization of the camera actuator.

[0135] The optical axis directions of the plurality of lenses of the second lens assembly (1130) can form a first angle (θ) with a second direction that is perpendicular to the first direction. That is, the fourth direction, which is the optical axis direction of the plurality of lenses of the second lens assembly (1130), can form a first angle (θ) with the second direction. The first camera actuator (1100) can have its major axis arranged in the second direction. A first side surface (S1) of the first camera actuator (1100) can be perpendicular to the first direction and arranged along the second direction. The second lens assembly (1130) can form a first angle (θ) with the first side surface (S1) of the first camera actuator (1100). The second lens assembly (1130) can perform AF by moving along a rail arranged in the fourth direction. The optical axis direction of the plurality of lenses of the second lens assembly (1130) may be perpendicular to the first exit surface (1140c) of the first prism (1140) and the second incident surface (1230a) of the second prism (1230). The second lens assembly (1130) may move along the fourth direction to perform AF, and light passing through the second lens assembly (1130) may be incident on the second camera actuator (1200). By arranging the optical axis direction of the second lens assembly (1130) to form a constant angle with the second direction, the light reflected by the first prism (1140) may be transmitted to the second camera actuator (1200) while simultaneously performing AF. Consequently, by reducing the size of the first prism (1140), the width of the camera module in the first direction may be reduced while maintaining the AF performance of the camera module.

[0136] The second prism (1230) of the second camera actuator (1200) may include a second incident surface (1230a), a second reflective surface (1230b), and a second exit surface (1230c). The second incident surface (1230a) may be a surface on which light is incident on the second prism (1230). The second incident surface (1230a) may be arranged perpendicular to the fourth direction. The second incident surface (1230a) may be arranged parallel to the first exit surface (1140c). That is, the second incident surface (1230a) may form a first angle (θ) with the first direction. The second incident surface (1230a) forms a first angle (θ) with the first direction, thereby preventing light passing through the second lens assembly (1130) from being refracted and preventing unnecessary changes in the path of light, thereby enabling accurate performance of OIS and AF. Accordingly, deterioration of optical performance due to OIS operation can be prevented. The second reflective surface (1230b) may be a surface on which light is reflected. Light passing through the second incident surface (1230a) may be reflected on the second reflective surface (1230b). The second reflective surface (1230b) may be arranged on an inclined surface of the mover (1220). The second reflective surface (1230b) may form a predetermined angle with the second incident surface (1230a). The angle formed by the second reflective surface (1230b) and the second incident surface (1230a) may be less than 45°. The angle formed by the second reflective surface (1230b) with the first direction may be greater than 45 degrees. The arrangement direction of the second reflective surface (1230b) and the arrangement direction of the first reflective surface (1140b) may be parallel to each other. The second exit surface (1230c) may be a surface through which light is emitted. Light emitted through the second exit surface (1230c) may be incident on the image sensor (IS) of the circuit board (1300). The second exit surface (1230c) may be arranged perpendicular to the first direction. The second exit surface (1230c) may be arranged parallel to the first incident surface (1140a). The second exit surface (1230c) may overlap with the image sensor (IS) in the first direction.The image sensor (IS) can be overlapped with the second prism (1230) and the mover (1220) in the first direction.

[0137] The second prism (1230) may include a second cutting plane (1230d). The second cutting plane (1230d) is disposed between the second incident surface (1230a) and the second reflective surface (1230b), and may be disposed parallel to the second exit surface (1230c). The area of ​​the second cutting plane (1230d) may be smaller than the area of ​​the second exit surface (1230c). The second cutting plane (1230d) may include an area that overlaps with the second exit surface (1230c) in the first direction and an area that does not overlap. The second prism (1230) may include the second cutting plane (1230d) to reduce the width and size in the first direction, thereby achieving miniaturization of the camera actuator.

[0138] FIGS. 23 to 25 are drawings showing the light path of a camera module according to another embodiment.

[0139] FIG. 23 and FIG. 24 illustrate optical paths when the optical axis directions of the plurality of lenses (1131, 1132, 1133) of the second lens assembly are arranged in a second direction perpendicular to the first direction. In addition, FIG. 23 illustrates a case where the image sensor (IS) is arranged in the opposite direction to the first lens assembly with respect to the housing of the camera module, and FIG. 24 illustrates a case where the image sensor (IS) is arranged in the same direction as the first lens assembly with respect to the housing of the camera module. In this case, the image sensor (IS) and the first lens assembly are arranged in the same direction with respect to the housing of the camera actuator, so that the maximum width of the camera module can be reduced in the first direction. FIG. 25 illustrates a case where the optical axis directions of the plurality of lenses (1131, 1132, 1133) of the second lens assembly form a first angle with respect to the first direction, as in FIG. 22. In this case, the AF driving unit is tilted in a direction away from the image sensor (IS), so that the second reflective surface (1230b) of the second prism (1230) is arranged at an angle, and the width of the second prism (1230) in the first direction can be reduced. Accordingly, the size of the outer portion of the camera actuator adjacent to the image sensor (IS) can be reduced, and the overall size of the camera module can also be reduced.

[0140] Fig. 26 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0141] As illustrated in FIG. 26, the mobile terminal (1500) of the embodiment may include a camera module (1000), a flash module (1530), and an autofocus device (1510) provided on the rear.

[0142] The camera module (1000) may include an image capturing function and an autofocus function. For example, the camera module (1000) may include an autofocus function using an image.

[0143] The camera module (1000) processes still or moving image frames obtained by the image sensor in shooting mode or video call mode.

[0144] The processed image frame can be displayed on a predetermined display unit and stored in memory. A camera (not shown) may also be placed on the front of the mobile terminal body.

[0145] For example, the camera module (1000) may include a first camera module (1000) and a second camera module (1000), and OIS may be implemented together with AF or zoom functions by the first camera module (1000A).

[0146] The flash module (1530) may include a light-emitting element that emits light internally. The flash module (1530) may be operated by the camera operation of the mobile terminal or by the user's control.

[0147] The autofocus device (1510) may include one of the packages of surface-emitting laser devices as the light-emitting unit.

[0148] The autofocus device (1510) may include an autofocus function using a laser. The autofocus device (1510) may be primarily used in conditions where the autofocus function using the image of the camera module (1000) is degraded, such as at a close range of 10 m or less or in a dark environment.

[0149] The autofocus device (1510) may include a light emitting unit including a vertical cavity surface emitting laser (VCSEL) semiconductor device and a light receiving unit that converts light energy into electrical energy, such as a photodiode.

[0150] Fig. 27 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0151] For example, FIG. 27 is an exterior view of a vehicle equipped with a vehicle driving assistance device to which a camera module according to an embodiment is applied.

[0152] Referring to FIG. 27, 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.

[0153] The camera sensor (3000) may be a camera sensor to which a camera module according to an embodiment is applied. The vehicle (700) of the embodiment can obtain image information through the camera sensor (3000) that captures a forward image or a surrounding image, and can use the image information to determine a lane non-identification situation and create a virtual lane when the lane is not identified.

[0154] For example, a camera sensor (3000) can capture a front image of a vehicle (700) and a processor (not shown) can analyze an object included in the front image to obtain image information.

[0155] For example, if objects such as a center divider, curb, or street tree, which correspond to a lane, adjacent vehicle, traffic obstruction, or indirect road marking, are captured in an image captured by a 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 from the object detected through the camera sensor (3000) to further supplement the image information.

[0156] The image information may be information about an object captured in the image. The camera sensor (3000) may include an image sensor and an image processing module.

[0157] The camera sensor (3000) can process still images or moving images obtained by an image sensor (e.g., CMOS or CCD).

[0158] The image processing module can process still images or videos acquired through an image sensor, extract necessary information, and transmit the extracted information to the processor.

[0159] At this time, the camera sensor (3000) may include a stereo camera to improve the measurement accuracy of the object and to secure more information such as the distance between the vehicle (700) and the object, but is not limited thereto.

[0160] Although the above description focuses on examples, these are merely examples and do not limit the present invention. Those skilled in the art will appreciate that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the present invention. For example, each component specifically shown in the examples can be modified and implemented. In addition, differences related to such modifications and applications should be construed as being included within the scope of the present invention defined in the appended claims.

Claims

1. The first camera actuator into which light enters; a second camera actuator arranged at the rear end of the first camera actuator; and It includes an image sensor that receives light passing through the second camera actuator, The above first camera actuator, A camera module comprising a first lens assembly through which light is incident, a first prism that reflects the light passing through the first lens assembly to change its path, and a second lens assembly through which the light reflected by the first prism passes.

2. In paragraph 1, The first lens assembly includes a plurality of lenses whose optical axis direction is in the first direction, The image sensor is arranged perpendicular to the first direction, A camera module in which the first camera actuator and the second camera actuator are arranged in a second direction perpendicular to the first direction.

3. In paragraph 2, The second camera actuator includes a second prism, The second prism is a camera module that rotates based on the first direction or a third direction perpendicular to the first direction and the second direction.

4. In paragraph 3, A camera module in which the light incident surface of the first prism is parallel to the light exit surface of the second prism.

5. In paragraph 3, The above first camera actuator includes a first housing, The first lens assembly is disposed on the outside of the first housing, A camera module wherein the first prism and the second lens assembly are disposed inside the first housing.

6. In paragraph 5, A camera module in which the first housing includes a prism mounting surface for fixing the first prism and a first rail along which the second lens assembly moves.

7. In paragraph 3, A camera module wherein the second lens assembly is positioned between the first prism and the second prism.

8. In paragraph 7, The second prism is a camera module that overlaps the image sensor in the first direction.

9. In paragraph 6, The first housing includes a first opening adjacent to the first lens assembly, A camera module in which the first opening overlaps the prism mounting surface in the first direction.

10. In paragraph 6, The second lens assembly includes a first drive rail, The above first drive rail is a camera module facing the above first rail.

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