Camera module and camera comprising the same

Abstract

A camera module is provided. The camera module includes a circuit board on which an image sensor is arranged, a lens unit arranged in front of a sensor surface of the image sensor, a housing for accommodating the lens unit and the image sensor, and a gyro sensor arranged on the circuit board to detect motion. The circuit board includes a first circuit board on which the image sensor is arranged and a second circuit board on which the gyro sensor is arranged, wherein the first circuit board can be arranged to extend in a first axis direction and the second circuit board can be arranged to extend in a direction perpendicular to the first axis.

Description

[0001] This application is a divisional application of the invention patent application filed on May 14, 2019, with application number 201980032908.1 and invention title "Camera Module and Camera Including the Camera Module". Technical Field

[0002] This embodiment relates to a camera module and a camera containing the camera module. Background Technology

[0003] The camera module performs the function of taking a picture of an object and storing it as an image or video, and the camera module is installed on a mobile terminal, such as a mobile phone, laptop, drone or vehicle.

[0004] On the other hand, portable devices such as smartphones, tablets, and laptops have built-in miniature camera modules, and these camera modules can use autofocus to automatically adjust the distance between the image sensor and the lens so that the lens's focal length is aligned.

[0005] Recently, camera modules have been able to increase or decrease the magnification of distant subjects using zoom lenses to perform zoom functions, such as enlarging or reducing photos.

[0006] In addition, recently, camera modules have adopted image stabilization (IS) technology to correct or prevent image shake caused by unstable fixing equipment or camera movement due to user motion. These IS technologies include optical image stabilization (OIS) technology and image stabilization technology using the image sensor.

[0007] OIS technology corrects motion by changing the path of light, while image stabilization technology using image sensors corrects motion mechanically and electronically, and OIS technology is more widely used.

[0008] On the other hand, image sensors achieve higher resolution with higher pixel counts, thus reducing pixel size. However, as pixels become smaller, the amount of light received also decreases. Therefore, in dark environments, as shutter speeds decrease, higher camera pixel counts result in more severe image blur due to camera shake.

[0009] Therefore, in order to capture images without distortion using high-resolution cameras in the dark or in video, OIS functionality has recently been largely adopted.

[0010] On the other hand, OIS technology corrects image quality by adjusting the optical path of the camera's lens or image sensor. Specifically, OIS technology uses a gyroscope sensor to detect camera movement and can calculate the distance the image sensor needs to move.

[0011] For example, OIS correction methods include lens shifting and module tilting. Lens shifting involves moving only the lenses within the camera module to rearrange the center of the image sensor and optical axis. Module tilting, on the other hand, moves the entire module, including both the lenses and the image sensor.

[0012] In particular, the module tilting method has a wider correction range than the lens shifting method, and since the focal length between the lens and the image sensor is fixed, it has the advantage of minimizing image distortion.

[0013] Meanwhile, in the lens motion method, a Hall sensor is used to detect the position and movement of the lens. On the other hand, in the module tilt method, a light reflector is used to detect the movement of the module. However, both methods use a gyroscope sensor to detect the movement of the camera user.

[0014] The OIS controller uses data identified by the gyroscope sensor to predict where the lens or module should move to compensate for the user's movements.

[0015] On the other hand, traditional OIS technology has a complex structure because it requires mechanical drive devices to move the lens or tilt the module, and it must install drive devices or gyroscope sensors, which limits its ability to realize miniature camera modules. Summary of the Invention

[0016] Technical issues

[0017] This embodiment aims to provide a miniature camera module.

[0018] In addition, this embodiment aims to provide a camera module that can provide a miniature camera module while ensuring the high accuracy of the gyroscope sensor by ensuring the high flatness of the gyroscope sensor.

[0019] Furthermore, regarding the arrangement of the gyroscope sensor in the camera module, the gyroscope sensor 260 is positioned close to the camera module to improve the accuracy of angular acceleration, while simultaneously reducing the error rate caused by temperature drift. This invention aims to provide a camera module with sophisticated technical effects that significantly improve the performance of miniature camera modules.

[0020] In addition, according to this embodiment, besides the shielding effect of the shield can 210, it is also intended to provide a camera module with complex technical effects such as shielding against EMI, EMC, etc. through the support frame 262.

[0021] The technical problems of this embodiment are not limited to those described herein, but also include those understood from the specification of this invention.

[0022] Technical solution

[0023] The camera module according to this embodiment includes: a circuit board 230 on which an image sensor 240 is arranged; a lens unit 220 arranged in front of the sensor surface of the image sensor 240; a housing 225 for accommodating the image sensor 240; and a gyroscope sensor 260 arranged on the circuit board 230 to detect motion.

[0024] The circuit board 230 includes a first circuit board 231 and a second circuit board 232. The image sensor 240 is arranged on the first circuit board, and the gyroscope sensor 260 is arranged on the second circuit board. The first circuit board 231 can extend and be arranged in a first axial direction, and the second circuit board 232 can be arranged to extend in a direction parallel to the optical axis and perpendicular to the first axis.

[0025] The central axis of the gyroscope sensor 260 can be parallel to the first axis direction and perpendicular to the optical axis direction.

[0026] This embodiment may also include a shield 210, which is located on the outer surface of the housing 225.

[0027] The shield 210 may include a predetermined support frame 262 and may include a guide groove 262R in which the second circuit board 232 is arranged in the support frame 262.

[0028] Since the second circuit board 232 is securely arranged in the guide groove 262R of the support frame 262, the flatness of the gyroscope sensor 260 can be ensured to be within 1°.

[0029] In another embodiment, the shield 210 may include one or more guide protrusions 210P.

[0030] The guide protrusion 210P can be arranged to be parallel to the direction of the second axis and extend in a direction perpendicular to the direction of the first axis.

[0031] The second circuit board 232 can be securely mounted on the guide protrusion 210P.

[0032] Since the second circuit board 232 is securely mounted on the guide protrusion 210P, the flatness of the gyroscope sensor 260 is ensured to be within 1°.

[0033] Beneficial effects

[0034] This embodiment provides a miniature camera module. For example, according to this embodiment, a gyroscope sensor 260 is arranged on a second circuit board 232, which is arranged to extend in a direction perpendicular to the horizontal coordinate axis (x-axis) and parallel to the optical axis (z-axis). Therefore, by controlling the size of the camera module to be horizontal with respect to the parallel width of the housing 225, the technical effect of realizing a miniature camera module is achieved.

[0035] For example, in this embodiment, in conventional internal technology, the area of ​​the circuit board where the gyroscope sensor is arranged can be reduced by about 3 to 4 mm or more (about 25% or more) by extending in the direction of the horizontal coordinate axis (x-axis). Therefore, it has the technical effect of providing a miniature camera module.

[0036] Furthermore, according to this embodiment, since the second circuit board 232 is securely fixed and arranged in the guide groove 262R of the support frame 262, the flatness of the gyroscope sensor 260 is ensured, thereby improving the precision of the gyroscope sensor. This achieves the sophisticated technical effect of ensuring such high precision while providing a miniature camera module.

[0037] For example, in the camera module of this embodiment, a support frame 262 is arranged in the shielding cover 210, and the support frame 262 includes a guide groove 262R (in which the second circuit board 232 is arranged). Since the second circuit board 232 is firmly fixed and arranged in the guide groove 262R of the support frame 262, a miniature camera module with special technical effect can be provided, namely, the miniature camera module can ensure a high degree of flatness of the gyroscope sensor 260.

[0038] Furthermore, regarding the arrangement of the gyroscope sensor in the camera module, the gyroscope sensor 260 is positioned close to the camera module to improve the accuracy of angular acceleration, and simultaneously, the accuracy of the gyroscope sensor is significantly improved by reducing the error rate caused by temperature drift. In addition, it possesses sophisticated technical effects that enable the provision of a miniature camera module.

[0039] For example, in this embodiment, a support frame 262 is disposed on the shielding portion 210, and the support frame 262 includes a guide groove 262R in which the second circuit board 232 is disposed. Because the second circuit board 232 is securely fixed and disposed in the guide groove 262R of the support frame 262, the gyroscope sensor 260 is placed close to the camera module to improve the accuracy of angular acceleration, while generating a large amount of heat. By positioning it away from the image sensor 240, the following complex technical effects are achieved: significantly improved accuracy of the gyroscope sensor by reducing the error rate caused by temperature drift, while providing a very compact camera module.

[0040] In addition, according to this embodiment, besides the shielding effect of the shielding cover 210, it also has the complex technical effect of shielding EMI, EMC, etc. through the support frame 262.

[0041] Next, according to another embodiment, in the camera module of this embodiment, the shield 210 includes a guide protrusion 210P, and the second circuit board 232 is rigidly fixed to the guide protrusion 210P. In addition to the special technical effect of ensuring the high flatness of the sensor 260, it also has the special technical effect of providing a miniature camera module.

[0042] Furthermore, according to another embodiment, the shield 210 may include a guide protrusion 210P. The second circuit board 232 may be securely disposed on the guide protrusion 210P. Therefore, the gyroscope sensor 260 is positioned close to the camera module to improve the accuracy of angular acceleration, while simultaneously being positioned away from the image sensor 240, which generates a large amount of heat, thereby reducing the error rate due to temperature drift. Thus, this embodiment possesses the sophisticated technical effect of providing a miniature camera module while significantly improving the precision of the gyroscope sensor.

[0043] The technical effects of this embodiment are not limited to those described herein, but also include those understood from the specification of this invention. Attached Figure Description

[0044] Figure 1 This is a perspective view showing the camera module of the first embodiment.

[0045] Figure 2 It is based on Figure 1 A partial side view of the camera module of the first embodiment shown.

[0046] Figure 3 It is along according to Figure 1 A partial cross-sectional view of the camera module of the first embodiment shown, taken along line A1-A1'.

[0047] Figure 4 It is based on Figure 1 A partial perspective view of the camera module of the first embodiment shown.

[0048] Figure 5 This is a perspective view showing a camera module according to a second embodiment.

[0049] Figure 6 It is based on Figure 5 A partial perspective view of the shielding cover of the camera module in the second embodiment shown.

[0050] Figure 7 It is based on Figure 5 A partial perspective view of the camera module of the second embodiment shown.

[0051] Figure 8 It is based on Figure 6 The rear-view perspective view of the camera module of the second embodiment is shown. Detailed Implementation

[0052] The embodiments will now be described in detail with reference to the accompanying drawings. Since these embodiments can be modified in various ways and have various forms, several specific embodiments will be shown in the drawings and described in detail. However, this is not intended to limit these embodiments to a particular type of disclosure, and it should be understood that all changes, equivalents, and substitutions included in the spirit and scope of these embodiments are included.

[0053] Various elements may be described using terms such as "first" and "second," but these elements should not be limited by these terms. These terms are used to distinguish one component from another. Furthermore, terms specifically defined in consideration of the configuration and operation of the embodiments are for describing the embodiments only and do not limit the scope of the embodiments.

[0054] In the description of this embodiment, when described as being formed on the "upper" or "lower" of each element, it includes cases where two elements are in direct contact with each other, or cases where one or more other elements are indirectly formed between two elements. Furthermore, when expressed as "upward" or "downward," it means not only the upward direction based on an element, but also the downward direction.

[0055] Furthermore, relational terms such as “upward / upper / top” and “downward / lower / bottom” used below do not necessarily require or imply any physical or logical relationship or order between these entities or elements; they may be used to distinguish one entity or element from another.

[0056] (First Embodiment)

[0057] Figure 1 This is a perspective view showing the camera module 201 according to the first embodiment. Additionally, Figure 2 It is based on Figure 1 A partial side view of the camera module 201 of the first embodiment shown. Figure 3 It is along according to Figure 1 A partial cross-sectional view of the camera module 201 of the first embodiment shown, taken along line A1-A1′. Figure 4 It is based on Figure 1 A partial perspective view of the camera module 201 of the first embodiment shown.

[0058] In one embodiment, the direction parallel to the optical axis may be referred to as the z-axis, and the plane perpendicular to the optical axis may be the xy-plane. In this xy-plane, the x-axis and y-axis may be defined as mutually perpendicular directions, but are not limited thereto. In this case, the x-axis may be defined as a horizontal coordinate axis, and the y-axis may be defined as a vertical coordinate axis, but the present invention is not limited thereto.

[0059] First, refer to Figure 1 The camera module 201 of this embodiment includes: a circuit board 230 on which an image sensor 240 is disposed; a lens unit 220 disposed in front of the sensor surface of the image sensor 240; and a housing 225 for accommodating the lens unit 220 and the image sensor 240.

[0060] Furthermore, the camera module 201 according to this embodiment includes: a gyroscope sensor 260 arranged on a circuit board 230 to detect motion; and a drive circuit element 250 for controlling an actuator (not shown) that drives a lens unit 220 according to an input / output signal from the gyroscope sensor 260.

[0061] The circuit board 230 includes: a first circuit board 231 on which an image sensor 240 is disposed; a second circuit board 232 on which a gyroscope sensor 260 and a drive circuit element 250 are disposed; and a connecting board 233 connecting the first circuit board 231 and the second circuit board 232.

[0062] In addition, refer to Figure 1 In the camera module 201 of this embodiment, a shielding cover 210 may be additionally installed on the outer surface of the housing 225. This shielding cover 210 may also be referred to as a housing. The shielding cover 210 may be formed of a metal material such as steel (SUS) and can shield electromagnetic waves flowing into and out of the camera module, and can also prevent foreign matter from flowing into the camera module.

[0063] Next, in the camera module 201 of this embodiment, the image sensor 240 receives a solid-state image sensor such as a CMOS (Complementary Metal-Oxide-Semiconductor Image Sensor) or a CCD (Charge-Coupled Device) and analog electrical signals output from the solid-state image sensor. It may include an analog-to-digital converter that converts and outputs digital values.

[0064] Figure 2 It is based on Figure 1 A partial side view of the camera module 201 of the first embodiment shown. Figure 3 It is along according to Figure 1 A partial cross-sectional view of the camera module 201 of the first embodiment shown, taken along line A1-A1'. Referring now... Figure 2 and Figure 3 This embodiment is described.

[0065] Reference Figure 3 In this embodiment, the lens unit 220 may be equipped with a predetermined barrel 222 and a lens 224. The lens 224 may include a single lens or multiple lenses.

[0066] In one embodiment, an actuator (not shown) capable of driving the lens unit 220 may be arranged on the housing 225. 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 methods, thermal methods, dual piezoelectric wafer methods, and electrostatic force methods, but is not limited thereto.

[0067] For example, the actuator in this embodiment can support one or more lenses 224 and, in response to a control signal from a predetermined controller, perform an autofocus function by moving the lenses 224 up and down. Additionally, the lenses 224 can be moved left or right to perform a camera shake correction function. Furthermore, the lenses 224 can be moved up, down, left, and right to perform both the autofocus function and the camera shake correction function.

[0068] Return to reference Figure 1 According to this embodiment, by employing a gyroscope sensor 260, OIS technology for correcting image quality can be implemented by detecting the movement of the camera module and correcting the optical path by moving the lens.

[0069] The motion of the camera module can mainly include linear motion along the axis and rotational motion about the axis.

[0070] First, such as Figure 1 As shown, linear motion refers to the motion along the horizontal coordinate axis (x-axis) of the camera module, the motion along the vertical coordinate axis (y-axis) of the camera module, and the motion along the optical axis (z-axis) along the front-back direction of the camera module.

[0071] Next, as Figure 1 As shown, the rotational motion includes pitch, which is a vertical rotational motion using the horizontal coordinate axis (x-axis) of the camera module as the axis of rotation. Additionally, the rotational motion includes yaw, which is a left-right rotational motion using the vertical coordinate axis (y-axis) of the camera module as the axis of rotation. Furthermore, the rotational motion may include roll, which is a rotational motion using the optical axis (z-axis) passing through the camera module in the forward-backward direction as the axis of rotation.

[0072] In one embodiment, the gyroscope sensor 260 may be a dual-axis gyroscope sensor, which detects two rotational quantities representing large motions—pan and yaw—in a two-dimensional image frame, as well as more precise hand shake. Furthermore, for accurate detection and correction, a three-axis gyroscope sensor that detects all motion quantities of pan, yaw, and roll can be employed. The motions corresponding to the pan, yaw, and roll detected by the gyroscope sensor 260 can be converted into appropriate physical quantities according to the camera shake correction method and correction direction.

[0073] Next, Figure 4 It is based on Figure 1 A partial perspective view of the camera module 201 of the first embodiment is shown.

[0074] In one embodiment, the circuit board 230 may include a first circuit board 231 on which an image sensor 240 is disposed and a second circuit board 232 on which a gyroscope sensor 260 is disposed. The circuit board 230 may include a connecting plate 233 connecting the first circuit board 231 and the second circuit board 232, and the second circuit board 232 includes driving circuit elements 250 disposed thereon, but is not limited thereto.

[0075] In this embodiment, the circuit board 230 is any board with wiring patterns that can be electrically connected, such as a rigid printed circuit board (rigid PCB), a flexible printed circuit board (flexible PCB), and a rigid-flexible (combined) printed circuit board (rigid-flexible PCB).

[0076] For example, the first circuit board 231 and the second circuit board 232 can be rigid printed circuit boards (Rigid PCBs), and the connecting board 233 can be a flexible printed circuit board (Flexible PCB) or a rigid-flexible printed circuit board, but is not limited thereto.

[0077] In one embodiment, the first circuit board 231 can extend and be arranged in the direction of the horizontal coordinate axis (x-axis) of the camera module, while the second circuit board 232 is perpendicular to the direction of the horizontal coordinate axis (x-axis) and can be arranged to extend in a direction parallel to the optical axis (z-axis).

[0078] Therefore, according to this embodiment, since the gyroscope sensor 260 is arranged on the second circuit board 232, it has the technical effect of realizing a miniature camera module.

[0079] For example, in undisclosed internal technology, the length of the circuit board 230 in the horizontal coordinate axis (x-axis) direction of the camera module is about 15mm, which poses a problem for realizing a miniature camera module.

[0080] Incidentally, such as Figure 2As shown, the gyroscope sensor 260 is arranged on a second circuit board 232, which is perpendicular to the horizontal coordinate axis (x-axis) and extends in a direction parallel to the optical axis (z-axis). By controlling the size of the module to be the same as the horizontal parallel width L1 of the housing 225, a miniature camera module is achieved.

[0081] For example, this embodiment can reduce the area of ​​the circuit board extending in the horizontal coordinate axis (x-axis) direction by about 3 to 4 mm or more (about 25% or more) to accommodate the gyroscope sensor in conventional internal technology. Therefore, this embodiment has the technical effect of realizing a miniature camera module.

[0082] According to one embodiment, a gyroscope sensor 260 is arranged on a second circuit board 232, which is arranged perpendicular to the horizontal coordinate axis (x-axis) and extends in a direction parallel to the optical axis (z-axis). With this arrangement, the central axis of the gyroscope sensor 260 can be parallel to the horizontal coordinate axis (x-axis) but perpendicular to the optical axis (z-axis).

[0083] Therefore, in this embodiment, in the measurement data of the gyroscope sensor 260, the pitch motion can be replaced by roll, and the roll motion can be controlled by pitch.

[0084] Return to reference Figure 4 In the camera module of this embodiment, a support frame 262 is provided in the shielding cover 210, and a guide groove 262R is formed in the support frame 262 (the second circuit board 232 is arranged in the guide groove).

[0085] Therefore, since the second circuit board 232 is securely arranged in the guide groove 262R of the support frame 262, the flatness of the gyroscope sensor 260 can be ensured to be high. For example, in this embodiment, since the second circuit board 232 is securely fixed and arranged in the guide groove 262R of the support frame 262, the flatness of the gyroscope sensor 260 is very accurate and can be ensured to be within about 1°.

[0086] In the existing technology, there has been no attempt to arrange the center of a gyroscope sensor in a direction perpendicular to the optical axis. In particular, since flatness is important for the accuracy of data in gyroscope sensors, there has been no attempt to arrange the center of a gyroscope sensor in a vertical direction that is not parallel to the optical axis.

[0087] However, in the camera module of this embodiment, the support frame 262 is disposed within the shielding cover 210, and the support frame 262 includes a guide groove 262R (in which the second circuit board 232 is disposed). Since the second circuit board 232 is securely fixed and disposed within the guide groove 262R of the support frame 262, it provides a unique technical effect: ensuring high flatness for the miniature camera module. The guide groove 262R may be referred to as a recess, but is not limited thereto.

[0088] In addition, there are the following problems regarding the arrangement of the gyroscope sensor in the camera module: the farther the gyroscope sensor is from the camera module, the greater the probability of angular acceleration error, and there is also a technical contradiction: the closer the gyroscope sensor is to the camera module, the greater the error rate caused by temperature drift.

[0089] However, as in this embodiment, the support frame 262 is disposed within the shield 210, and the support frame 262 includes a guide groove 262R in which the second circuit board 232 is arranged. Because the second circuit board 232 is securely arranged in the guide groove 262R, the gyroscope sensor 260 is positioned close to the camera module to improve the precision of angular acceleration, while simultaneously generating a significant amount of heat. By disengaging the gyroscope sensor from (away from) the image sensor 240, a sophisticated technical effect is achieved by significantly improving the accuracy of the gyroscope sensor by minimizing the error rate due to temperature drift, while simultaneously providing a very compact camera module.

[0090] In addition, according to this embodiment, besides the shielding effect of the shielding cover 210, it also has the complex technical effect of shielding EMI, EMC, etc. through the support frame 262.

[0091] (Second Embodiment)

[0092] Figure 5 This is a perspective view showing the camera module 202 of the second embodiment. Figure 6 yes Figure 5 A partial perspective view of the shielding cover 210 of the camera module 202 in the second embodiment shown. Figure 7 yes Figure 5 A partial perspective view of the camera module 202 of the second embodiment shown. Figure 8 yes Figure 6 The rear-view perspective view of the camera module 202 of the second embodiment is shown.

[0093] The second embodiment may employ several technical features of the first embodiment. The main features of the second embodiment will be described below.

[0094] Reference Figure 5The camera module 202 of the second embodiment includes: a circuit board 230 on which an image sensor 240 is disposed; a lens unit 220 disposed in front of the sensor surface of the image sensor 240; and a housing 225 for accommodating the lens unit 220 and the image sensor 240.

[0095] Additionally, the camera module 202 according to the second embodiment may include a drive circuit element 250 for controlling an actuator (not shown) that controls the lens unit 220 based on the input / output signal of a gyroscope sensor 260, which is arranged on a circuit board 230 to detect motion.

[0096] The circuit board 230 includes: a first circuit board 231 on which an image sensor 240 is disposed; a second circuit board 232 on which a gyroscope sensor 260 and a drive circuit element 250 are disposed; and a connecting board 233 connecting the first circuit board 231 and the second circuit board 232.

[0097] In this case, refer to Figure 5 In the camera module 202 of the second embodiment, a shield 210 can be mounted on the outer surface of the housing 225. The shield 210 can also be referred to as a cover. The shield 210 can be formed of a metal material such as steel (SUS) and can shield electromagnetic waves flowing into and out of the camera module, and can also prevent foreign matter from flowing into the camera module.

[0098] Figure 6 yes Figure 5 A partial perspective view of the shielding cover 210 of the camera module 202 in the second embodiment shown.

[0099] Reference Figure 6 The shield 210 of the camera module 202 in the second embodiment may include one or more guide protrusions 210P.

[0100] The guide protrusion 210P can be arranged to extend parallel to the vertical coordinate axis (y-axis) and perpendicular to the horizontal coordinate axis (x-axis).

[0101] The guide protrusion 210P may be formed of the same or similar material as the shield 210, but is not limited thereto.

[0102] Next, Figure 7 yes Figure 5 A partial perspective view of the camera module 202 of the second embodiment shown. Figure 8 yes Figure 6 The rear-view perspective view of the camera module 202 of the second embodiment is shown.

[0103] For now, refer to Figure 5In the second embodiment, the circuit board 230 includes a first circuit board 231 (on which an image sensor 240 is disposed) and a second circuit board 232 (on which a gyroscope sensor 260 is disposed). The circuit board 230 may include a connecting plate 233 connecting the first circuit board 231 and the second circuit board 232, and the second circuit board 232 includes driving circuit elements (not shown) that may be disposed thereon, but is not limited thereto.

[0104] In one embodiment, the first circuit board 231 may extend and be arranged in the direction of the horizontal coordinate axis (x-axis) of the camera module, while the second circuit board 232 is perpendicular to the direction of the horizontal coordinate axis (x-axis) and may be arranged to extend in a direction parallel to the optical axis (z-axis).

[0105] With this setup, according to this embodiment, since the gyroscope sensor 260 is arranged on the second circuit board 232, it achieves the technical effect of realizing a miniature camera module.

[0106] For example, as mentioned above, in undisclosed internal technology, the length of the circuit board 230 in the horizontal coordinate axis (x-axis) direction of the camera module is about 15mm, which poses a problem in the implementation of the miniature camera module.

[0107] However, as Figure 5 As shown, the gyroscope sensor 260 is arranged on a second circuit board 232, which is perpendicular to the horizontal coordinate axis (x-axis) and extends in a direction parallel to the optical axis (z-axis). By controlling the size of this module to be horizontal with the parallel width of the housing 225, a miniature camera module is achieved.

[0108] For example, this embodiment can reduce the area of ​​the circuit board extending in the horizontal coordinate axis (x-axis) direction by about 3 to 4 mm or more (about 25% or more) to accommodate the gyroscope sensor in conventional internal technology. Therefore, this embodiment has the technical effect of realizing a miniature camera module.

[0109] Return to reference Figure 7 and Figure 8 In the camera module according to the second embodiment, the shield 210 may include one or more guide protrusions 210P. The guide protrusions 210P may be arranged to extend in a direction parallel to the vertical coordinate axis (y-axis) and perpendicular to the horizontal coordinate axis (x-axis).

[0110] Therefore, since the second circuit board 232 is securely mounted on the guide protrusion 210P, the gyroscope sensor 260 can be ensured to have high flatness. For example, since the second circuit board 232 is securely fixed to the guide protrusion 210P (as in this embodiment), the flatness of the gyroscope sensor 260 can be ensured to be very precisely within about 1°.

[0111] On the other hand, in gyroscope sensors, since flatness is important for data accuracy, there has been no attempt in the current technology to arrange the center of the gyroscope sensor in a direction perpendicular to rather than parallel to the optical axis.

[0112] However, in the camera module of this embodiment, the shield 210 may have a guide protrusion 210P, and the second circuit board 232 may be rigidly and securely disposed on the guide protrusion 210P. This arrangement provides a unique technical effect that ensures the high flatness of the gyroscope sensor 260, and also provides a unique technical effect that allows for the provision of a miniature camera module.

[0113] Furthermore, as mentioned above, regarding the arrangement of the gyroscope sensor in the camera module, the following problems exist: the farther the gyroscope sensor is from the camera module, the greater the probability of angular acceleration error (error). On the other hand, there is a technical contradiction: the closer the gyroscope sensor is to the camera module, the greater the error rate due to temperature drift.

[0114] Incidentally, since the shield 210 of the second embodiment has a guide protrusion 210P, and the second circuit board 232 is rigidly fixed to the guide protrusion 210P, the second circuit board 232 can be rigidly fixed and arranged in the guide protrusion 210P. Therefore, the gyroscope sensor 260 is arranged close to the camera module to improve the accuracy of angular acceleration, while at the same time, the gyroscope sensor 260 is arranged away from the image sensor 240, which generates a large amount of heat, thereby preventing error rates due to temperature drift. Therefore, this embodiment has the sophisticated technical effect of providing a very compact camera module while significantly improving the precision of the gyroscope sensor.

[0115] The features, structures, effects, etc., described in the above embodiments are included in at least one embodiment, but are not necessarily limited to one embodiment. Furthermore, the features, structures, effects, etc., described in each embodiment can be implemented by combining or modifying other embodiments by those skilled in the art to which that embodiment pertains. Therefore, content related to such combinations and modifications should be interpreted as being included within the scope of these embodiments.

[0116] Although these embodiments have been described above, they are merely examples and are not intended to limit the scope of the embodiments, and those skilled in the art will not depart from the essential characteristics of the embodiments. Further variations and applications will be seen. For example, each component specifically illustrated in the embodiments can be modified and implemented. And the differences associated with these modifications and applications should be understood to be included within the scope of the embodiments defined in the appended claims.

[0117] Industrial applicability

[0118] The camera module according to this embodiment can be used in a mobile terminal, such as a mobile phone, laptop, drone, or vehicle.

Claims

1. A camera module comprising: a circuit board on which an image sensor is disposed; a lens unit disposed in front of a sensor surface of the image sensor; a housing accommodating the lens unit and the image sensor; a shield can located on an outer surface of the housing such that the housing is positioned between the shield can and the image sensor, and a gyro sensor disposed on the circuit board to detect motion, wherein the circuit board comprises a first circuit board on which the image sensor is disposed and a second circuit board on which the gyro sensor is disposed, wherein the shield can comprises a support frame extending from an inner surface of the shield can and the support frame comprises a guide groove, wherein the first circuit board is disposed to extend in a direction of a first axis and the second circuit board is disposed to extend in a direction perpendicular to the first axis, and wherein the gyro sensor is configured to overlap the guide groove in the direction of the first axis.

2. The camera module of claim 1, wherein, The shield can comprises at least one guide protrusion extending inward from a side wall of the shield can.

3. The camera module of claim 2, wherein, The guide protrusion is arranged in parallel with a direction of a second axis and extends in a direction perpendicular to the direction of the first axis.

4. The camera module of claim 2, wherein, The second circuit board is arranged on the guide protrusion.

5. The camera module of claim 1, wherein, At least a portion of the second circuit board is arranged in the guide groove.

6. The camera module of claim 5, wherein, The second circuit board is fixedly arranged in the guide groove of the support frame.

7. The camera module of claim 1, wherein, The gyro sensor is arranged between the circuit board and the housing, and wherein the gyro sensor and the second circuit board are arranged between the support frame and the housing.

8. The camera module of claim 1, wherein, The gyro sensor is arranged between the second circuit board and the housing.

9. The camera module of claim 2, wherein, At least two guide protrusions are arranged under the second circuit board.

10. The camera module of claim 2, wherein, A width of the guide protrusion is smaller than a width of the second circuit board. 11.A camera comprising the camera module according to any one of claims 1 to 10. 12.A camera module comprising: a circuit board on which an image sensor is disposed; a lens unit disposed in front of a sensor surface of the image sensor; a housing accommodating the lens unit and the image sensor; a shield can located on an outer surface of the housing, and a gyro sensor disposed on the circuit board to detect motion, wherein the circuit board comprises a first circuit board disposed to extend in a direction of a first axis and a second circuit board disposed to extend in a direction transverse to an optical axis direction and at the same time perpendicular to the first axis, and wherein the shield can comprises a support frame extending from an inner surface of the shield can and the support frame comprises a guide groove, the gyro sensor being configured to overlap the guide groove in the direction of the first axis.

Images