Camera actuator and camera module comprising same

Abstract

An embodiment provides a camera actuator comprising: a first housing; a mover disposed in the first housing; a prism disposed on the mover; a first driving unit for driving the mover; and a first lens module disposed on the mover and including a lens that transmits light in a first direction corresponding to an optical axis along which light is incident, wherein the first lens module includes a lens barrel surrounding the lens, a first protrusion protruding from the lens barrel in a second direction perpendicular to the first direction, and a second protrusion protruding in a third direction opposite to the second direction, and the first and second protrusions of the first lens module are fixed to the mover.

Description

Camera actuator and camera module including the same

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

[0002] A camera is a device that captures subjects in photos or videos, and it is mounted on portable devices, drones, vehicles, etc. To improve image quality, camera modules 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 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] At this time, there is a problem where the optical axis is not aligned because the prism and lens module of the OIS actuator are driven separately. In this case, there may be a problem where the OIS is not driven stably. In addition, there is a problem where flare occurs due to light entering through the air gap in the outer cover of the camera actuator, or light leakage occurs due to light leakage. Furthermore, since tilt occurs during the active alignment (AA) of the sensor, space is required at the bottom of the sensor, and there is a problem where a structure is required to dissipate the heat generated by the sensor.

[0005] An embodiment provides a camera actuator with improved optical performance and a camera module including the same.

[0006] In addition, a camera actuator with increased driving efficiency and driving stability and a camera module including the same are provided.

[0007] In addition, a camera actuator capable of achieving miniaturization and a camera module including the same are provided.

[0008] In addition, a camera actuator capable of preventing flare and light leakage and a camera module including the same are provided.

[0009] In addition, a camera actuator capable of preventing the ingress of foreign substances from the outside and a camera module including the same are provided.

[0010] In addition, a camera actuator that facilitates the dissipation of heat generated internally and a camera module including the same are provided.

[0011] The problem to be solved in the embodiments is not limited thereto, and may also include the purpose or effect that can be identified from the means of solving the problem or the form of implementation described below.

[0012] A camera actuator according to an embodiment comprises: a first housing; a mover disposed within the first housing; a prism disposed on the mover; a first driving unit for driving the mover; and a first lens module disposed on the mover and transmitting light in a first direction which is the optical axis direction in which light is incident, wherein the first lens module comprises a lens barrel surrounding the lens, a first protrusion protruding from the lens barrel in a second direction perpendicular to the first direction, and a second protrusion protruding in a third direction opposite to the second direction, and the first and second protrusions of the first lens module may be fixed to the mover.

[0013] The above mover includes an epoxy coating portion formed on the upper surface, and the first protrusion and the second protrusion may be disposed on the epoxy coating portion.

[0014] The mover can be tilted with respect to a first axis parallel to the first direction and a second axis parallel to the second direction.

[0015] A portion of the lens barrel may include a first portion that does not overlap with the mover in the first direction.

[0016] A camera actuator according to an embodiment may include a zoom module that transmits light reflected from the prism to an image sensor by passing it through; and a cover member disposed between the zoom module and the first housing.

[0017] The above cover member may include a recess that escapes from the lens barrel of the first lens module.

[0018] The width of the recess in the second direction of the above cover member may be smaller than the maximum width in the second direction of the lens barrel.

[0019] The above-mentioned camera actuator includes a bracket disposed on the outside, and the bracket may include a first bracket adjacent to the first lens module with respect to the first direction and a second bracket spaced apart from the first lens module.

[0020] The first bracket includes a baffle protruding in the first direction, and the baffle may overlap with the first lens module in the first direction or the second direction.

[0021] The above baffle includes an opening into which light is incident and a blocking member disposed around the opening, and the blocking member may have a certain width in a direction perpendicular to the first direction.

[0022] The above blocking portion may partially overlap with the first lens module in the first direction, and the blocking portion may be spaced a certain distance from the top of the lens barrel in the first direction.

[0023] The first bracket includes a coating portion disposed on the inner side, and the coating portion may partially overlap with the cover member in the first direction.

[0024] The above bracket includes a heat transfer member disposed between the first bracket and the second bracket, and the heat transfer member may overlap the first bracket and the second bracket in a direction perpendicular to the first direction.

[0025] The heat transfer member is overlapped with the first bracket and the second bracket in the first direction, and the heat transfer member may include a thermally conductive epoxy.

[0026] A camera actuator according to an embodiment includes an image sensor that receives light, and the first bracket includes an etching area recessed by a certain width in the first direction on the inside, and the etching area may overlap with the image sensor in the first direction.

[0027] According to an embodiment, a camera actuator with improved optical performance and a camera module including the same can be provided.

[0028] In addition, a camera actuator with increased driving efficiency and driving stability and a camera module including the same can be provided.

[0029] In addition, a camera actuator capable of achieving miniaturization and a camera module including the same can be provided.

[0030] In addition, a camera actuator capable of preventing flare and light leakage and a camera module including the same can be provided.

[0031] In addition, a camera actuator capable of preventing the ingress of foreign substances from the outside and a camera module including the same can be provided.

[0032] In addition, a camera actuator that facilitates the dissipation of heat generated internally and a camera module including the same can be provided.

[0033] 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.

[0034] FIG. 1 is a perspective view of a camera module according to an embodiment, and

[0035] FIG. 2 is an exploded perspective view of a camera module according to an embodiment, and

[0036] FIG. 3 is a cross-sectional view of a camera module cut along AA' in FIG. 1, and

[0037] FIG. 4 is a perspective view of a camera module according to an embodiment, and

[0038] FIG. 5 is an exploded perspective view of a camera module according to an embodiment, and

[0039] FIG. 6 is a perspective view of a camera module according to an embodiment excluding the bracket, and

[0040] FIG. 7 is a top view of a camera module according to an embodiment, excluding the bracket, and

[0041] FIG. 8 is a cross-sectional view of the cross section cut at BB' in FIG. 4, and

[0042] FIG. 9 is a cross-sectional view of the cross section cut at CC' in FIG. 4, and

[0043] FIG. 10 is a perspective view of a camera actuator according to an embodiment, and

[0044] FIG. 11 is a perspective view of a camera actuator according to an embodiment excluding the first lens module, and

[0045] FIG. 12 is a perspective view of a first lens module of a camera actuator according to an embodiment, and

[0046] FIG. 13 is another perspective view of a first lens module of a camera actuator according to an embodiment, and

[0047] FIG. 14 is a perspective view of a first bracket of a camera module according to an embodiment, and

[0048] FIG. 15 is another perspective view of the first bracket of the camera module according to an embodiment, and

[0049] FIG. 16 is a magnified view of section A in FIG. 8, and

[0050] FIG. 17 is a perspective view of a second bracket of a camera module according to an embodiment, and

[0051] FIG. 18 is a magnified view of section B in FIG. 8, and

[0052] FIG. 19 is a perspective view of a mobile terminal with a camera module applied according to an embodiment, and

[0053] FIG. 20 is a perspective view of a vehicle with a camera module applied according to an embodiment.

[0054] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] In addition, terms such as first, second, A, B, (a), (b), etc. may be used when describing the components of the embodiments of the present invention.

[0060] These terms are intended merely to distinguish a component from other components and are not limited by the essence, order, sequence, etc. of the component.

[0061] 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.

[0062] 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.

[0063] 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 cut at AA' in FIG. 1.

[0064] Referring to FIGS. 1 and 2, a camera module (1000) according to an embodiment may consist of 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 used as the first actuator, and the second camera actuator (1200) may be used as the second actuator.

[0065] The cover (CV) can cover the first camera actuator (1100) and 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).

[0066] 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.

[0067] And the first camera actuator (1100) may be an OIS (Optical Image Stabilizer) actuator. For example, the first camera actuator (1100) may move an optical member in a direction perpendicular to the optical axis.

[0068] The first camera actuator (1100) may include a fixed focal length lens disposed in a predetermined barrel (not shown). The fixed focal length lens may also be referred to as a “single focal length lens” or a “single lens.”

[0069] The first camera actuator (1100) can change the path of light. In an embodiment, the first camera actuator (1100) can change the path of light vertically through an internal optical element (e.g., a prism or a mirror). 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 path of light so that magnification, autofocus (AF), and OIS functions can be performed.

[0070] However, it is not limited to this, and the first camera actuator (1100) can change the light path multiple times vertically or at a predetermined angle.

[0071] 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 coupled with the first camera actuator (1100). And the coupling between them may be achieved in various ways.

[0072] 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. Also, one or more lenses may move independently or individually along the optical axis direction to perform AF.

[0073] 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). The circuit board (1300) may include an image sensor (IS) and may be fixed inside a camera module (1000). Additionally, the circuit board (1300) may be electrically connected to another sensor module within the terminal or to a processor of the terminal. Through this, the aforementioned camera actuator and the camera module including it can transmit and receive various signals within the terminal. The circuit board (1300) may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), or a rigid-flexible printed circuit board (Rigid Flexible PCB). However, it is not limited to these types.

[0074] The camera module according to the embodiment may consist of a single or multiple camera modules. For example, the multiple camera modules may include a first camera module and a second camera module.

[0075] 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).

[0076] The second camera module 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. In addition, in this specification, the camera actuator may be referred to as an actuator, etc. Furthermore, a camera module composed of a plurality of camera modules may be mounted in various electronic devices such as mobile terminals.

[0077] Referring to FIG. 3, the camera module according to the embodiment 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.

[0078] Light can be incident into a camera module or the first camera actuator through an opening region located on 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., Z-axis direction), and the optical path can be changed in a vertical direction (e.g., Y-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).

[0079] In this specification, the bottom surface refers to one side in the first direction. The first direction is the Z-axis direction in the drawing and may be used interchangeably with the first axis direction, etc. The second direction is the X-axis direction in the drawing and may be used interchangeably with the second axis direction, etc. The second direction is a direction perpendicular to the first direction. Additionally, the third direction may be a direction opposite to the second direction. The third direction is the X-axis direction in the drawing and may be perpendicular to the first direction. The fourth direction is the Y-axis direction in the drawing and may be a direction perpendicular to the first direction and the second direction. Here, the first direction (Z-axis direction) corresponds to the optical axis direction, and the second direction (X-axis direction) and the fourth direction (Y-axis direction) are directions perpendicular to the optical axis and may be tilted by the first camera actuator. The first direction is a direction perpendicular to the surface of the prism where light is incident, and the second direction may be a direction parallel to the surface of the prism where light is emitted. The fourth direction may be a direction perpendicular to the surface of the prism from which light is emitted. Additionally, in the description of the first camera actuator (1100) below, the optical axis direction is the first direction (Z-axis direction), and the description below is based on this.

[0080] Additionally, in this specification, the inner side may be the direction toward the first camera actuator from the cover (CV), and the outer side may be the opposite direction of the inner side. That is, the first camera actuator and the second camera actuator may be located on the inner side of the cover (CV), and the cover (CV) may be located on the outer side of the first camera actuator or the second camera actuator. Additionally, in this specification, the inner side may be the direction toward the first or second camera actuator from the bracket or shield can to be described later, and the outer side may be the opposite direction of the inner side.

[0081] 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 second camera actuator can provide a high range of magnification by controlling focus, etc., in the expanded light path.

[0082] In addition, the camera module 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.

[0083] Furthermore, the second camera actuator (1200) may include an optical system and a lens driving unit. For example, at least one of the first lens assembly, the second lens assembly, the third lens assembly, and the guide pin may be disposed in the second camera actuator (1200). Additionally, the second camera actuator (1200) may be equipped with a coil and a magnet to perform a high-magnification zooming function.

[0084] 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. Furthermore, the first to third lens assemblies can move along the optical axis direction, that is, the third direction. Additionally, the first to third lens assemblies can move in the third direction independently or dependently of each other.

[0085] 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 can be prevented during OIS operation. 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.

[0086] In the following description of FIGS. 4 to 17, the camera actuator may correspond to the first camera actuator in the camera module of FIGS. 1 to 3. That is, in the following description of FIGS. 4 to 18, the camera actuator may correspond to the OIS actuator. Also, in the description of FIGS. 4 to 17, the zoom module may correspond to the second camera actuator in the camera module of FIGS. 1 to 3.

[0087] FIG. 4 is a perspective view of a camera module according to an embodiment, FIG. 5 is an exploded perspective view of a camera module according to an embodiment, FIG. 6 is a perspective view of a camera module according to an embodiment excluding a bracket, FIG. 7 is a top view of a camera module according to an embodiment excluding a bracket, FIG. 8 is a cross-sectional view of the cross section cut at BB' in FIG. 4, and FIG. 9 is a cross-sectional view of the cross section cut at CC' in FIG. 4.

[0088] Referring to FIGS. 4 to 9, a camera module (1000) according to an embodiment may include a camera actuator (1100), a zoom module (1200), a circuit board (1300), and a bracket (1400).

[0089] The camera actuator (1100) may include a first housing (1110), a sub-housing (1120), a first lens module (1130), a mover (1140), a substrate part (1150), and a magnet part (1160).

[0090] The camera actuator (1100) may include a first housing (1110). The first housing (1110) may form the outer wall of the camera actuator (1100). A sub-housing (1120), a mover (1140), and a magnet part (1160) may be disposed inside the first housing (1110). A substrate part (1150) may be disposed outside the first housing (1110). The first housing (1110) may include a shape in which the outer side is partially open to allow light to be incident or emitted.

[0091] The camera actuator (1100) may include a sub-housing (1120). The sub-housing (1120) may be placed in the first housing (1110). The sub-housing (1120) may be coupled with the first housing (1110). The sub-housing (1120) may be placed on the side of the first housing (1110). The sub-housing (1120) may come into contact with a mover (1140). A fourth magnet (1164) may be placed in the sub-housing (1120). The fourth magnet (1164) may secure the mover (1140) through interaction with a fifth magnet (1165). The sub-housing (1120) may include a ball seating portion (1121) on which a projection (1141) of the mover (1140) is placed. The ball seating portion (1121) may include at least one inclined surface. The inclined surface of the ball seating portion (1121) may come into contact with the projection (1141).

[0092] The first lens module (1130) may be placed on the outside of the first housing (1110). The first lens module (1130) may be placed on the mover (1140). Light may enter the interior of the camera actuator (1100) through the first lens module (1130). The first lens module (1130) may include at least one lens. The optical axis direction of the lens of the first lens module (1130) may be formed in a first direction. Light may pass through the first lens module (1130) and enter the first prism (1142). The first lens module (1130) may overlap with the first prism (1142) in a first direction. The first lens module (1130) may be placed on the inside of the baffle (1411) of the bracket (1400).

[0093] The camera actuator (1100) may include a mover (1140). A first prism (1142) may be disposed in the mover (1140). The mover (1140) may rotate about a first axis, a second axis, or a third axis in contact with the sub-housing (1120). The mover (1140) may perform tilting of the first prism (1142) by rotating about the first axis, the second axis, or the third axis. The mover (1140) may be disposed inside the first housing (1110). The mover (1140) may be coupled with the first lens module (1130). The mover (1140) may include a receiving space in which the first prism (1142) is disposed. Additionally, the mover (1140) may include an inclined surface on which the reflective surface (1142b) of the first prism (1142) is placed. The first to third magnets (1161, 1162, 1163) may be placed in the mover (1140). The mover (1140) may include a magnet groove on which the first to third magnets (1161, 1162, 1163) are placed. The mover (1140) may include a projection (1141). The projection (1141) may be placed on the ball seating portion (1121) of the sub-housing (1120). The projection (1141) may include a hemispherical shape. The projection (1141) may form the center of the rotation axis of the mover (1140). The center of the hemisphere of the projection (1141) may overlap with the intersection of the first axis, the second axis, and the third axis.

[0094] The mover (1140) may include a first member (1140a). The first member (1140a) may be coupled to the mover (1140). A fifth magnet (1165) may be disposed on the first member (1140a). The first member (1140a) may be disposed to overlap with the sub-housing (1120) in a fourth direction. The first member (1140a) may be disposed to partially intersect with the sub-housing (1120). Accordingly, the mover (1140) can be fixed to the sub-housing (1120) through the fifth magnet (1165) disposed on the first member (1140a) and the fourth magnet (1164) disposed on the sub-housing (1120).

[0095] The mover (1140) may include a first prism (1142). The first prism (1142) may reflect light. The first prism (1142) may be placed on an inclined surface of the mover (1140). The first prism (1142) may reflect light incident from the outside and emit it. The first prism (1142) may include an incident surface (1142a) where light is incident, a reflective surface (1142b) that reflects light, and an emission surface (1142c) where light is emitted. The reflective surface (1142b) of the first prism (1142) may be placed on an inclined surface of the mover (1140). The incident surface (1142a) of the first prism (1142) may be placed perpendicular to the first direction. The emission surface (1142c) of the first prism (1142) may be positioned perpendicular to the fourth direction. The center of the reflection surface (1142b) of the first prism (1142) may overlap with the optical axis of the first prism (1142) and the optical axis of the reflected light of the first prism (1142). Additionally, the center of the reflection surface (1142b) of the first prism (1142) may overlap with the intersection of the first axis (l1), the second axis (l2), and the third axis (l3).

[0096] The camera actuator (1100) may include a substrate portion (1150). The substrate portion (1150) may supply power required for driving the camera actuator (1100). The substrate portion (1150) may be disposed on the outside of the first housing (1110). The substrate portion (1150) may include a plurality of sub-substrates, first to third coils (C1, C2, C3), a sensor portion (1151), and a driver IC (1152). The first coil (C1) and the second coil (C2) may be disposed perpendicular to the second direction. The third coil (C3) may be disposed perpendicular to the first direction. The third coils (C1, C2, C3) may each be disposed adjacent to the first to third magnets (1161, 1162, 1163). The first to third coils (C1, C2, C3) can each perform OIS driving by applying electromagnetic force to the first to third magnets (1161, 1162, 1163). The first to third coils (C1, C2, C3) may include a hole on the inside. The sensor unit (1151) can sense the OIS driving of the camera actuator (1100). The sensor unit (1151) may be placed on the inside of the substrate unit (1150). The sensor unit (1151) may include a plurality of sensors. The sensor unit (1151) may be placed in the inner hole of the first to third coils (C1, C2, C3). The driver IC (1152) may be placed on the inside of the substrate unit (1150). The driver IC (1152) can control the driving of the camera actuator (1100).

[0097] The camera actuator (1100) may include a magnet portion (1160). The magnet portion (1160) can tilt the mover (1140) through interaction with the first to third coils (C1, C2, C3). Additionally, the magnet portion (1160) can fix the mover (1140). The magnet portion (1160) may include at least one magnet and at least one magnet yoke. The magnet portion (1160) may include the first to fifth magnets (1161, 1162, 1163, 1164, 1165). Additionally, the magnet portion (1160) may include at least one magnet yoke that fixes the magnets. The substrate part (1150) and the magnet part (1160) may correspond to a first driving part that drives the first camera actuator.

[0098] The first to third magnets (1161, 1162, 1163) may be driving magnets. The first to third magnets (1161, 1162, 1163) may each tilt the mover (1140) through interaction with the first to third coils (C1, C2, C3). The first to third magnets (1161, 1162, 1163) may be placed on the mover (1140). The first magnet (1161) and the second magnet (1162) may be placed perpendicular to the second direction. The third magnet (1163) may be placed perpendicular to the first direction. The fourth magnet (1164) and the fifth magnet (1165) may be fixed magnets. The fourth magnet (1164) and the fifth magnet (1165) can fix the mover (1140) through interaction with each other. The fourth magnet (1164) and the fifth magnet (1165) can face each other. The fourth magnet (1164) and the fifth magnet (1165) can overlap in a fourth direction. The fourth magnet (1164) and the fifth magnet (1165) can exert a repulsive force. Accordingly, the mover (1140) can be pulled toward the sub-housing (1120) and fixed on the sub-housing (1120).

[0099] FIG. 10 is a perspective view of a camera actuator according to an embodiment, FIG. 11 is a perspective view of the camera actuator according to an embodiment excluding the first lens module, FIG. 12 is a perspective view of the first lens module of the camera actuator according to an embodiment, and FIG. 13 is another perspective view of the first lens module of the camera actuator according to an embodiment.

[0100] Referring to FIGS. 4 to 13, the first lens module (1130) may include a lens barrel (1131), a first protrusion (1132), a second protrusion (1133), and a lens (1134).

[0101] The lens barrel (1131) may surround the lens (1134) on the outside of the lens (1134). The lens barrel (1131) may secure the lens (1134). The lens barrel (1131) may include a receiving space on the inside in which the lens (1134) is placed. The lens (1134) may include at least one lens. The optical axis direction of the lens (1134) may be formed in a first direction. Light may pass through the lens (1134). The lens barrel (1131) may be placed on the first prism (1142). The lens barrel (1131) may be placed on the inside of the baffle (1411) of the bracket (1410). The lens barrel (1131) may overlap the baffle (1411) in a direction perpendicular to the first direction. A portion of the lens barrel (1131) may include a first portion (1131a) that does not overlap with the mover (1140) in a first direction. The first portion (1131a) of the lens barrel (1131) may not overlap with the mover (1140) in a first direction. The first portion (1131a) of the lens barrel (1131) may overlap with a portion of the cover member (1230) in a first direction. By ensuring that the first portion (1131a) of the lens barrel (1131) does not overlap with the mover (1140) in a first direction, miniaturization of the camera module (1000) and stable prism tilting may be possible.

[0102] The first protrusion (1132) and the second protrusion (1133) may be positioned on the outside of the lens barrel (1131). The first protrusion (1132) and the second protrusion (1133) may protrude from the outside of the lens barrel (1131) in a direction perpendicular to the first direction. The first protrusion (1132) and the second protrusion (1133) may protrude in opposite directions. The first protrusion (1132) may protrude in the second direction, and the second protrusion (1133) may protrude in the third direction. The first protrusion (1132) and the second protrusion (1133) may be positioned spaced apart in the second direction. The first protrusion (1132) and the second protrusion (1133) may be fixed to the mover (1140). The first protrusion (1132) and the second protrusion (1133) may be positioned at the end closest to the mover (1140) of the lens barrel (1131). The width of the first protrusion (1132) and the second protrusion (1133) in the fourth direction may be smaller than the maximum width of the lens barrel (1131) in the fourth direction.

[0103] The mover (1140) may include a first epoxy coating portion (1143). The first epoxy coating portion (1143) may be a surface on which the first lens module (1130) is placed. The first epoxy coating portion (1143) may be positioned perpendicular to the first direction. The first epoxy coating portion (1143) may be parallel to the incident surface (1142a) of the first prism (1142). The first protrusion (1132) and the second protrusion (1133) may be placed on the first epoxy coating portion (1143) of the mover (1140). Epoxy may be applied to the first epoxy coating portion (1143) so that the first protrusion (1132) and the second protrusion (1133) can be fixed on the mover (1140). Additionally, the first lens module (1130) may include a second epoxy coating portion (1130a). The second epoxy coating portion (1130a) may be a surface that is coupled to the mover (1140). The second epoxy coating portion (1130a) may be positioned perpendicular to the first direction. The second epoxy coating portion (1130a) may be the lower surface of the lens barrel (1131), the first protrusion (1132), and the second protrusion (1133). Epoxy is applied to the second epoxy coating portion (1130a) so that the first protrusion (1132) and the second protrusion (1133) can be fixed on the mover (1140). By fixing the protrusions of the lens barrel on the mover (1140) through the epoxy coating portion, stable OIS operation is possible and the image can be formed stably.

[0104] The zoom module (1200) may include a second housing (1210), a first lens assembly (1220), a cover member (1230), a second driving unit (1240), a stopper (S), and a second prism (1250).

[0105] The second housing (1210) may form the outer wall of the zoom module (1200). A cover member (1230) may be disposed on one side of the second housing (1210). A first lens assembly (1220), a second driving unit (1240), a stopper (S), and a second prism (1250) may be disposed inside the second housing (1210). The second driving unit (1240) may be disposed on the side parallel to the fourth direction of the second housing (1210). The side perpendicular to the fourth direction of the second housing (1210) may include an opening. A substrate may be disposed on the outside of the second housing (1210).

[0106] The first lens assembly (1220) may be placed inside the second housing (1210). Light reflected by the first prism (1142) may pass through the first lens assembly (1220). The first lens assembly (1220) may move inside the second housing (1210) along a fourth direction by means of a second driving unit (1240). The first lens assembly (1220) may partially overlap with the cover member (1230) in the fourth direction. A sixth magnet (1243) may be placed in the first lens assembly (1220). The first lens assembly (1220) may include at least one lens and a lens barrel.

[0107] The cover member (1230) can be expanded to increase the adhesive surface area between the camera actuator (1100) and the zoom module (1200) to improve adhesion. The cover member (1230) can be placed on one side of the second housing (1210). The cover member (1230) can be placed on the light-incident surface of the second housing (1210). The cover member (1230) can be placed perpendicular to the fourth direction. The cover member (1230) can be placed between the camera actuator (1100) and the zoom module (1200). The cover member (1230) can be placed between the zoom module (1200) and the first housing (1110) of the camera actuator (1100). The cover member (1230) can be overlapped with the first prism (1142) in the fourth direction. Light reflected by the first prism (1142) can pass through the cover member (1230).

[0108] The cover member (1230) may include a recess (1230a). The recess (1230a) may be elongated from the lens barrel (1131) of the first lens module (1130). The recess (1230a) may be positioned adjacent to the lens barrel (1131). The recess (1230a) may have a certain width in the fourth direction. The recess (1230a) may partially overlap with the lens barrel (1131) in the first direction. The width of the recess (1230a) in the second direction may be smaller than the maximum width of the lens barrel (1131) in the second direction. By positioning the recess (1230a) to overlap with the lens barrel (1131), miniaturization of the camera module (1000) can be achieved.

[0109] The second driving unit (1240) can drive the zoom module (1200). The second driving unit (1240) may include a substrate (1241), a fourth coil (1242), a sixth magnet (1243), and a sensor unit. The substrate (1241) may be placed on the outside of the second housing (1210). The substrate (1241) may supply the current required for the orientation of the zoom module (1200). The substrate (1241) may be placed on the side of the second housing (1210). The substrate (1241) may be placed perpendicular to the second direction. The fourth coil (1242) and the sensor unit may be placed on the substrate (1241). The fourth coil (1242) may move the first lens assembly (1220) in the fourth direction through interaction with the sixth magnet (1243). The sixth magnet (1243) may be placed on the first lens assembly (1220). The sixth magnet (1243) may move the first lens assembly (1220) in a fourth direction through interaction with the fourth coil (1242). The sixth magnet (1243) may be placed on the side of the first lens assembly (1220). The sixth magnet (1243) may be opposite to the fourth coil (1242). The sixth magnet (1243) may extend in the fourth direction. The sixth magnet (1243) may be fixed to the first lens assembly (1220) through a magnet yoke.

[0110] The stopper (S) can prevent the first lens assembly (1220) from colliding with the housing while moving. The stopper (S) may be placed on the second housing (1210) and the cover member (1230). The stopper (S) may overlap with the first lens assembly (1220) in a fourth direction. The stopper (S) may include at least one stopper. The stopper (S) may be located at the end of the movement stroke of the first lens assembly (1220).

[0111] The second prism (1250) can reflect light that has passed through the first lens assembly (1220). The second prism (1250) can overlap with the first lens assembly (1220) in a fourth direction. The second prism (1250) can reflect light that has passed through the first lens assembly (1220) to reach the image sensor (IS). The second prism (1250) can overlap with the image sensor (IS) in a first direction. By including the second prism (1250) in the zoom module (1200), the image sensor (IS) can be positioned perpendicular to the first direction and can be positioned on the side of the housing. Accordingly, miniaturization of the camera module can be achieved.

[0112] A circuit board (1300) may be placed at the rear end of a zoom module (1200). The circuit board (1300) may be electrically connected to a camera actuator (1100) and a zoom module (1200). Additionally, there may be multiple circuit boards (1300). The circuit board (1300) may include an image sensor (IS). The image sensor (IS) may receive light.

[0113] FIG. 14 is a perspective view of a first bracket of a camera module according to an embodiment, FIG. 15 is another perspective view of a first bracket of a camera module according to an embodiment, FIG. 16 is a partial enlarged view of part A in FIG. 8, FIG. 17 is a perspective view of a second bracket of a camera module according to an embodiment, and FIG. 18 is a partial enlarged view of part B in FIG. 8.

[0114] Referring to FIGS. 4 through 18, the camera module (1000) may include a bracket (1400). The bracket (1400) may be placed on the outside of the camera actuator (1100). The bracket (1400) may be placed on the outside of the camera actuator (1100) to protect the camera actuator (1100). Additionally, the bracket (1400) may be placed on the outside of the zoom module (1200).

[0115] The bracket (1400) may include a first bracket (1410) and a second bracket (1420). The bracket (1400) may include a combined form of the first bracket (1410) and the second bracket (1420). The first bracket (1410) may be a portion adjacent to the first lens module (1130) with respect to a first direction. Additionally, the second bracket (1420) may be a portion spaced apart from the first lens module (1130) with respect to a first direction. That is, the first bracket (1410) and the second bracket (1420) may be arranged relative to each other in a first direction.

[0116] The first bracket (1410) may include a baffle (1411). The baffle (1411) may be a portion protruding in a first direction. The baffle (1411) may have a certain width in the first direction. The baffle (1411) may include a cylindrical shape. A first lens module (1130) may be disposed inside the baffle (1411). The baffle (1411) may include a receiving space in which the first lens module (1130) is disposed inside. The baffle (1411) may overlap with the first lens module (1130) in the first direction or the second direction.

[0117] The baffle (1411) may include an opening (1411a) into which light is incident. Light may be incident on the first lens module (1130) through the opening (1411a) of the baffle (1411). The opening (1411a) may be positioned on the inner side of the light-incident surface of the baffle (1411). The maximum width of the opening (1411a) in the second direction may be smaller than the maximum width of the baffle (1411) in the second direction. The opening (1411a) may overlap with the lens (1134) of the first lens module (1130) in the first direction. The maximum width of the opening (1411a) in the second direction may be larger than the maximum width of the lens (1134) in the second direction.

[0118] The baffle (1411) may include a blocking portion (1411b). The blocking portion (1411b) may be positioned around the opening (1411a). The blocking portion (1411b) may be positioned on the surface where light is incident to block light. The blocking portion (1411b) may have a certain width in a direction perpendicular to the first direction. The blocking portion (1411b) may partially overlap with the first lens module (1130) in the first direction. The blocking portion (1411b) may overlap with the lens barrel (1131) of the first lens module (1130) in the first direction. The blocking portion (1411b) may be spaced a certain distance in the first direction from the top of the lens barrel (1131). Accordingly, the lens (1134) may not protrude outside the bracket (1400), and the bracket (1400) may protect the lens (1134).

[0119] The first bracket (1410) may include a stepped portion (1412) and a cover portion (1413). The stepped portion (1412) may be positioned adjacent to the zoom module (1200). The stepped portion (1412) may have a certain width in the first direction. The stepped portion (1412) may overlap with the second prism (1250) in the first direction. The first bracket (1410) may include the stepped portion (1412) to reduce unnecessary space on the inner side of the first bracket (1410) and reduce the width in the first direction. The cover portion (1413) may cover the bracket groove (1423) of the second bracket (1420). The cover portion (1413) may protrude in the first direction. The cover portion (1413) may have a certain width in the first direction and the fourth direction. The cover portion (1413) can be overlapped with the circuit board (1300) in a first direction.

[0120] The first bracket (1410) may include a coating portion (1414). The coating portion (1414) may be placed on the inner surface of the first bracket (1410). The coating portion (1414) may be placed in a position adjacent to the baffle (1411). The coating portion (1414) may overlap with the cover member (1230) in a first direction. The width of the coating portion (1414) in a second direction may be greater than the width of the baffle (1411) in a second direction. The coating portion (1414) may include a black coating. The coating portion (1414) can prevent flare phenomena that occur as light enters the space between the zoom module (1200) and the camera actuator (1100).

[0121] The bracket (1400) may include a heat transfer member (1430). The heat transfer member (1430) may be arranged along the perimeter of the bracket (1400). The heat transfer member (1430) may be arranged between the first bracket (1410) and the second bracket (1420). The heat transfer member (1430) may be arranged between the first bracket (1410) and the second bracket (1420) to transfer heat to the outside. Additionally, the heat transfer member (1430) may connect the first bracket (1410) and the second bracket (1420). The heat transfer member (1430) may be arranged in an area where the first bracket (1410) and the second bracket (1420) overlap in a direction perpendicular to the first direction. The heat transfer member (1430) may be positioned on the outer side or bottom of the first bracket (1410). The heat transfer member (1430) may be positioned on the inner side of the second bracket (1420). The heat transfer member (1430) may be positioned on the inner side of the corner portion (1421) of the second bracket (1420). The heat transfer member (1430) may overlap with the corner portion (1421) in a direction perpendicular to the first direction. Additionally, the heat transfer member (1430) may overlap with the first bracket (1410) in the first direction or in a direction perpendicular to the first direction. Additionally, the heat transfer member (1430) may partially overlap with the second bracket (1420) in the first direction. The heat transfer member (1430) may include a thermally conductive epoxy. The bracket (1400) can secure a heat dissipation area by including a heat transfer member (1430), thereby preventing performance degradation of the camera module due to heat from the image sensor and improving low-light performance.

[0122] The second bracket (1420) may include a corner portion (1421), an etching area (1422), and a bracket groove (1423). The corner portion (1421) may be positioned at the end of the second bracket (1420). The corner portion (1421) may be a portion adjacent to the first bracket (1410). The corner portion (1421) may overlap the first bracket (1410) in a direction perpendicular to the first direction. The corner portion (1421) may include a shape protruding outward by a certain width from the outer surface of the second bracket (1420). The corner portion (1421) may have a certain width in the first direction and in a direction perpendicular to the first direction. The corner portion (1421) may be coupled with a heat transfer member (1430).

[0123] The etching area (1422) may be placed on the inner surface of the second bracket (1420). The etching area (1422) may include a shape that is recessed by a certain width in the first direction on the inner surface of the second bracket (1420). The etching area (1422) may have a certain width in the second direction and the fourth direction. The etching area (1422) may overlap with the image sensor (IS) in the first direction. The image sensor (IS) may be placed in the etching area (1422) of the second bracket (1420). Accordingly, a space for placing the image sensor (IS) can be secured, and the width of the camera module (1000) in the first direction can be reduced. The bracket groove (1423) may be placed on the side of the second bracket (1420). A circuit board (1300) may be placed in the bracket groove (1423). The bracket groove (1423) may have a certain width in the fourth direction. The circuit board (1300) may allow the image sensor (IS) to be placed inside the bracket (1400) through the bracket groove (1423). The bracket groove (1423) may overlap with the cover portion (1413) of the first bracket (1410).

[0124] FIG. 19 is a perspective view of a mobile terminal with a camera module applied according to an embodiment.

[0125] Referring to FIG. 19, the mobile terminal of the embodiment may include a camera module (1000), a flash module (1510), and an autofocus device (1530) provided on the rear.

[0126] 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.

[0127] The camera module (1000) processes still image or video frame obtained by the image sensor in shooting mode or video call mode.

[0128] 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.

[0129] For example, the camera module (1000) may include a first camera module and a second camera module, and the first camera module 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 module. In this case, since the first camera module includes both the OIS actuator and the camera actuator described above, the camera module can be easily miniaturized by changing the light path.

[0130] The flash module (1510) may include a light-emitting element that emits light inside. The flash module (1510) may be operated by the operation of the camera of the mobile terminal or by the control of the user.

[0131] The autofocus device (1530) may include one of the packages of surface light-emitting laser elements as a light-emitting part.

[0132] The autofocus device (1530) may include an autofocus function using a laser. The autofocus device (1530) may be mainly used in conditions where the autofocus function using the image of the camera module (1000) is degraded, such as in a close distance of 10m or less or in a dark environment.

[0133] The autofocus device (1530) 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.

[0134] FIG. 20 is a perspective view of a vehicle with a camera module applied according to an embodiment.

[0135] For example, FIG. 20 is an exterior view of a vehicle equipped with a vehicle driving assistance device having a camera module applied according to an embodiment.

[0136] Referring to FIG. 20, 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.

[0137] The camera sensor (3000) may be a camera sensor to which a camera module according to the embodiment is applied. The vehicle (700) of the embodiment can acquire image information through the camera sensor (3000) that captures a front image or a surrounding image, and can determine a situation where a lane is not identified using the image information and generate a virtual lane when it is not identified.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] The camera sensor (3000) can process still images or videos obtained by an image sensor (e.g., CMOS or CCD).

[0142] 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.

[0143] 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.

[0144] 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.

Claims

1. First housing; A mover disposed within the first housing above; A prism placed on the above mover; A first driving unit for driving the above-mentioned mover; and It includes a first lens module comprising a lens disposed on the above-mentioned mover and transmitting light in a first direction which is the optical axis direction in which light is incident, and The first lens module comprises a lens barrel surrounding the lens, a first protrusion protruding in a second direction perpendicular to the first direction from the lens barrel, and a second protrusion protruding in a third direction opposite to the second direction. The first and second protrusions of the first lens module are a camera actuator fixed to the mover.

2. In Paragraph 1, The above-mentioned mover includes an epoxy coating portion formed on the upper surface, and The first protrusion and the second protrusion are camera actuators disposed on the epoxy coating portion.

3. In Paragraph 1, The above mover is a camera actuator that tilts with respect to a first axis parallel to the first direction and a second axis parallel to the second direction.

4. In Paragraph 1, A camera actuator in which a portion of the lens barrel includes a first portion that does not overlap with the mover in the first direction.

5. In Paragraph 1, A zoom module that transmits light reflected from the above prism to an image sensor; A camera actuator comprising a cover member disposed between the zoom module and the first housing.

6. In Paragraph 5, The above cover member is a camera actuator comprising a recess that escapes from the lens barrel of the first lens module.

7. In Paragraph 6, A camera actuator in which the width of the recess of the cover member in the second direction is smaller than the maximum width of the lens barrel in the second direction.

8. In Paragraph 5, It includes a bracket disposed on the outer side of the above-mentioned camera actuator, and The above bracket is a camera actuator comprising a first bracket adjacent to the first lens module with respect to the first direction and a second bracket spaced apart from the first lens module.

9. In Paragraph 8, The first bracket above includes a baffle protruding in the first direction, and The above baffle is a camera actuator that overlaps with the first lens module in the first direction or the second direction.

10. In Paragraph 9, The above baffle includes an opening into which light is incident and a blocking portion disposed around the opening, and The above blocking part is a camera actuator having a certain width in a direction perpendicular to the first direction.

Images