Camera module and electronic device including the same

Abstract

To provide a camera module and an electronic device including the same.SOLUTION: A camera module and an electronic device including the same are provided. The camera module includes: a first lens group including at least one or more lenses; a reflection member for reflecting light incident from a first direction of the first lens group to a second direction intersecting with the first direction; a second lens group located on the second direction and including at least three or more lenses; and an image sensor for receiving an optical signal having transmitted through the second lens group and generating an electric signal related to an image on the basis of the optical signal. When a focal distance of the first lens group is f1 and the total focal distance including the first lens group and the second lens group is f, 1.2<f1 / f<3 can be satisfied.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to electronic devices, and more particularly to a foldable camera module and an electronic device including the same. [Background technology]

[0002] In a miniaturized electronic device including multiple camera modules, a folded optics camera can be useful for extending or expanding the focal length. For example, in a folded camera, a reflective member such as a prism is arranged, so that the design or arrangement of the lens arrangement direction can be freely performed regardless of the direction of incident external light, and therefore the focal length can be easily extended. As the design freedom of the lens arrangement direction in a folded camera is improved, a miniaturized telephoto camera can be realized and combined with a wide-angle camera and mounted on an electronic device. In general, a camera includes an optical image stabilizer to improve the quality of an acquired image, and the performance of a telephoto camera for photographing a long-distance subject can be greatly improved when an optical image stabilizer is combined.

[0003] In a camera of a compact and / or lightweight electronic device, by implementing an image stabilization function, it is possible to save installation space and ensure good power efficiency. However, in a compact electronic device, it is difficult to secure installation space for a camera that combines a telephoto function and an image stabilization function. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a camera module that can ensure sufficient brightness and provide functions of focus adjustment and anti-shake, and an electronic device including the same. [Means for solving the problem]

[0005] The camera module according to the technical idea of the present disclosure includes a first lens group including at least one or more lenses, a reflecting member that reflects light incident from a first direction of the first lens group in a second direction intersecting the first direction, a second lens group located on the second direction and including at least three or more lenses, and an image sensor that receives an optical signal that has passed through the second lens group and generates an electrical signal related to an image based on the optical signal. When the focal length of the first lens group is f1 and the overall focal length including the first lens group and the second lens group is f, 1.2 < f1 / f < 3 may be satisfied.

[0006] The electronic device according to the technical idea of the present disclosure includes a first lens group including a first lens and a second lens located in a first direction parallel to the object side, a reflecting member that reflects light incident from the first direction in a second direction intersecting the first direction, a second lens group located on the second direction and including a third lens, a fourth lens, and a fifth lens, and an image sensor that detects light that has passed through the second lens group. When the focal length of the second lens group is f2 and the overall focal length including the first lens group and the second lens group is f, 1 < f2 / f < 2 may be satisfied.

[0007] An electronic device including a plurality of camera modules according to the technical idea of the present disclosure includes a first camera module having a first field of view and a second camera module having a second field of view different from the first field of view. The first camera module is located in a first direction and includes a first lens group including at least two or more lenses, a reflecting member that reflects light incident from the first direction in a second direction intersecting the first direction, a second lens group located in the second direction and including at least three or more lenses, and an image sensor that receives an optical signal that has passed through the second lens group and generates an electrical signal related to an image based on the optical signal. When the focal length of the first lens group is f1 and the overall focal length including the first lens group and the second lens group is f, 1.2 < f1 / f < 3 may be satisfied.

Effects of the Invention

[0008] According to an embodiment of the present disclosure, the camera module includes a folded optical system, and by rotating or tilting the first lens group and the reflecting member to implement a shake correction function, a high-quality telephoto image can be obtained.

[0009] Also, according to an embodiment of the present disclosure, since the second lens group can be implemented parallel to the longitudinal direction or the width direction of the electronic device for focus adjustment, the telephoto function, the macro function, and the brightness of the lens can be easily adjusted without substantially affecting the thickness of the electronic device.

[0010] That is, as it becomes easier to secure an installation space for the electronic device, it becomes easier to increase the size and performance of the image sensor, and the performance of the camera can be improved in terms of image quality.

Brief Description of the Drawings

[0011] [Figure 1] It is a block diagram showing an electronic device according to an embodiment of the present disclosure. [Diagram 2] It is a block diagram showing a camera module according to an embodiment of the present disclosure. [Diagram 3] FIG. 2 is a layout diagram of an optical structure of a camera module according to an embodiment of the present disclosure. [Figure 4] 1A-1C are diagrams illustrating the movement of a first lens group and a reflective member of a camera module according to an embodiment of the present disclosure. [Diagram 5] 13A-13D are diagrams illustrating the movement of the second lens group of the camera module according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a diagram illustrating an optical system of a camera module according to a first embodiment of the present disclosure. [Figure 7] FIG. 13 illustrates an optical system of a camera module according to a second embodiment of the present disclosure. [Figure 8] FIG. 13 is a diagram illustrating an optical system of a camera module according to a third embodiment of the present disclosure. [Figure 9] FIG. 13 is a diagram illustrating an optical system of a camera module according to a fourth embodiment of the present disclosure. [Figure 10] FIG. 13 is a diagram illustrating an optical system of a camera module according to a fifth embodiment of the present disclosure. [Figure 11] FIG. 1 is a front perspective view of an electronic device according to an embodiment of the present disclosure. [Figure 12] FIG. 2 is a rear perspective view of an electronic device according to an embodiment of the present disclosure. [Figure 13] 1 is a block diagram illustrating a portable terminal according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0013] FIG. 1 is a block diagram illustrating an electronic device 1 according to an embodiment of the present disclosure.

[0014] 1, an electronic device 1 may include a display 11, a processor 12, a memory 13, and a camera module 14. The camera of the camera module 14 may be any camera included in the electronic device 1.

[0015] The display 11, the processor 12, the memory 13, and the camera module 14 are electrically coupled to each other and may exchange signals (e.g., instructions or data) between each other. The electronic device 1 may take various forms. For example, the electronic device 1 may include a portable communication device (e.g., a smartphone), a portable multimedia device, a portable medical device, a wearable device, etc. The electronic device 1 according to the embodiments of the present disclosure is not limited to the aforementioned devices.

[0016] The processor 12 may include at least one processor. For example, the processor 12 may include an AP (application processor), an ISP (image signal processor), The processor may include at least one of a processor (CPU) and a communication processor (CP).

[0017] The processor 12 may control the camera module 14. The processor 12 may support various functions using the camera module 14. The processor 12 may control the camera module 14 and acquire photographed content from the camera module 14. The processor 12 may store the photographed content acquired via the camera module 14 in the memory 13 or process it in real time. The processor 12 may control the display 11. The processor 12 may display the photographed content via the display 11. For example, the photographed content may be displayed within an application execution screen while an application (e.g., a camera application or a photographing application) is being executed. According to one example, the processor 12 may control an OIS (optical image stabilizer) driver, a lens driver actuator, a lens controller, and an aperture driver module of the camera module 14.

[0018] The processor 12 may execute applications and control various hardware by executing code written in a programming language stored in the memory 13 of the electronic device 1. For example, the processor 12 may execute an application (e.g., a camera application or a photography application) and display photographed content or a user interface (UI) related to the photographed content on an application execution screen. The operations of the processor 12 may be performed by executing instructions stored in the memory 13.

[0019] According to an embodiment, the electronic device 1 may include a plurality of camera modules 14 each having different attributes or functions. For example, at least one of the plurality of camera modules 14 may be a wide-angle camera, and at least one of the plurality of camera modules 14 may be a telephoto camera. Similarly, at least one of the plurality of camera modules 14 may be a front camera, and at least one of the plurality of camera modules 14 may be a rear camera. For example, the plurality of camera modules 14 may have different angles of view. The first camera module may have the narrowest angle of view, and the second camera module may have the widest angle of view. In this manner, the plurality of camera modules 14 may be designed to have different angles of view, thereby capturing an image of an object (subject) at various depths and implementing a zoom function. In addition, the thickness of the electronic device 1 may not increase while implementing a high zoom ratio. In addition, since a high-resolution image or a bright image may be generated by using (e.g., combining) a plurality of images for one object, an image of the object may be captured clearly even in a low-light environment. Furthermore, the camera module 14 according to the embodiment can be miniaturized because the overall length does not affect the thickness of the electronic device 1. The camera modules 14 are not limited to this embodiment and may be configured in various embodiments.

[0020] FIG. 2 is a block diagram illustrating a camera module according to an embodiment of the present disclosure.

[0021] Referring to FIG. 2, the camera module 14 may include a lens assembly 210, a flash 220, an image sensor 230, an image stabilizer 240, a memory 250 (eg, a buffer memory), or an image signal processor 260.

[0022] The lens assembly 210 may collect light emitted from a subject to be imaged. The lens assembly 210 may include one or more lenses. According to an embodiment, the camera module 14 may include a plurality of lens assemblies 210. The lens assembly 210 may include a first lens group and a second lens group. The camera module 14 may form, for example, a dual camera, a 360° camera, or a spherical camera. Some of the plurality of lens assemblies 210 may have the same lens attributes (e.g., angle of view, focal length, auto focus, f number, or optical zoom), or at least one lens assembly may have one or more lens attributes different from the lens attributes of the other lens assemblies. The lens assembly 210 may include, for example, a wide-angle lens or a telephoto lens. For example, the lens assembly 210 may include a zoom lens, an OIS driver, a focus lens that changes the focus position, a lens drive actuator, etc. The zoom lens and the focus lens may be formed by a lens group combining a plurality of lenses. The lens drive actuator can adjust the focus by moving the focus lens in the optical axis direction.

[0023] The lens assembly 210 also includes a folded optical system, and a second lens group included in the lens assembly 210 may be embodied parallel to the length or width of the electronic device for focus adjustment, so that the telephoto function, close-up function, and lens brightness can be easily adjusted without substantially affecting the thickness of the electronic device.

[0024] The image stabilizer 240 may include an AF (autofocus), a gyro sensor, an OIS driver, etc. The AF and the gyro sensor may collect information related to autofocus and camera shake (hand tremors). The OIS driver may drive the lens assembly 210 for AF / OIS based on the information collected by the AF and the gyro sensor.

[0025] The image stabilizer 240 may respond to a movement of the camera module 14 or the electronic device 1 including the same by moving at least one lens included in the lens assembly 210 or the image sensor 230 in a particular direction or by controlling an operational characteristic of the image sensor 230 (e.g., adjusting a read-out timing, etc.) to at least partially compensate for the negative effects of the movement on the captured image. According to one embodiment, the image stabilizer 240 may sense such a movement of the camera module 14 or the electronic device 1 using a gyro sensor or an acceleration sensor disposed inside or outside the camera module 14. According to one embodiment, the image stabilizer 240 may be embodied, for example, by an optical image stabilizer.

[0026] The image stabilizer 240 may obtain a high-quality telephoto image by rotating or tilting the first lens group and a reflecting member included in the lens assembly 210 to realize a camera shake correction function.

[0027] The memory 250 may at least temporarily store at least a portion of an image acquired via the image sensor 230 for a subsequent image processing operation. For example, when image acquisition by a shutter is delayed or multiple images are acquired at high speed, the acquired original image (e.g., a Bayer-patterned image or a high-resolution image) may be stored in the memory 250, and a corresponding copy image (e.g., a low-resolution image) may be previewed via the display 11 (FIG. 1). Thereafter, if a specified condition is satisfied (e.g., a user input or a system command), at least a portion of the original image stored in the memory 250 may be acquired and processed, for example, by the image signal processor 260. According to an embodiment, the memory 250 may be configured as at least a part of the memory 13 (FIG. 1) or by a separate memory operated independently therefrom.

[0028] The image signal processor 260 may perform one or more image processing operations on the images acquired via the image sensor 230 or stored in the memory 250. The one or more image processing operations may include, for example, depth map generation, three-dimensional modeling, panorama generation, feature point extraction, image synthesis, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or alternatively, the image signal processor 260 may perform control (e.g., exposure time control or read-out timing control, etc.) on at least one of the components included in the camera module 14 (e.g., the image sensor 230). The images processed by the image signal processor 260 may be further stored in the memory 250 for further processing, or may be transferred to the camera module 14 for further processing. The image signal processor 260 may be provided to an external component of the processor 14 (e.g., memory 13 (FIG. 1), display 11 (FIG. 1), electronic device 1 or a server). According to one embodiment, the image signal processor 260 may be configured as at least a part of the processor 12 (FIG. 1) or may be configured as a separate processor operating independently of the processor 12 (FIG. 1). When the image signal processor 260 is configured as a separate processor from the processor 12 (FIG. 1), at least one image processed by the image signal processor 260 may be displayed via the display 11 (FIG. 1) either directly or after additional image processing by the processor 12 (FIG. 1).

[0029] FIG. 3 is a schematic diagram of an optical structure of a camera module 400 according to an embodiment of the present disclosure.

[0030] 3, the camera module 400 (e.g., a folding camera) may include a first lens group 410, a reflecting member 420, a second lens group 430, and an image sensor 450. The camera module 400 may further include an infrared blocking filter 440 disposed between the second lens group 430 and the image sensor 450.

[0031] The first lens group 410 may include at least one lens. For example, the first lens group 410 may include a plurality of lenses. The first lens group 410 may include a first lens 411 and a second lens 412. For example, the first lens 411 may have a positive refractive power, and the second lens 412 may have a negative refractive power. The first lens 411 may be disposed adjacent to an object to be imaged, and the second lens 412 may be disposed adjacent to a reflecting member 420. In one embodiment, the first lens group 410 may be located on the object side and aligned with the reflecting member 420 in a first direction (D1). The first lens group 410 may also be configured to move to correct image shaking due to disturbance acting on the camera module 400, which will be described later with reference to FIG. 6.

[0032] The reflecting member 420 may be provided to reflect light incident on the first lens group 410 at a predetermined angle. For example, the predetermined angle may be 90°. The reflecting member 420 may reflect the incident light toward the second lens group 430 and the image sensor 450. For example, the reflecting member 420 may include a prism or a mirror, and the reflecting member 420 may reflect or refract the light incident from a first direction (D1) to a second direction (D2) intersecting the first direction.

[0033] Here, the first direction (D1) may refer to, for example, a direction in which light is incident from the outside on the electronic device 1 (FIG. 1) or the camera module 400 when photographing an object (subject). In one embodiment, the first direction (D1) may refer to the photographing direction, the subject direction, the orientation direction of the camera module 400, or a direction parallel thereto. The second direction (D2) may be parallel to the longitudinal direction or width direction of the electronic device 1 (FIG. 1). When the second direction (D2) is perpendicular to the first direction (D1), it may be easier to design the camera module 400 or the optical path.

[0034] In one embodiment, the reflective member 420 may be arranged to be aligned with the first lens group 410 in a first direction (D1) and aligned with the second lens group 430 in a second direction (D2). The reflective surface of the reflective member 420 may include a point where light incident from the first direction (D1) is refracted or a point where the first direction (D1) and the second direction (D2) intersect. The incident surface of the reflective member 420 may face the first lens group 410 when viewed in the first direction (D1), and the exit surface of the reflective member 420 may face the second lens group 430 when viewed in the second direction (D2). In one embodiment, the incident surface and the exit surface may be formed at substantially 90°. In one embodiment, the reflective member 420 may be configured to move to correct image shaking due to disturbance acting on the camera module 400, which will be described later with reference to FIG. 4.

[0035] The second lens group 430 may include at least three or more lenses. For example, the second lens group 430 may include a third lens 431, a fourth lens 432, and a fifth lens 433. The second lens group 430 may further include a sixth lens 434 that is closer to the image sensor than the fifth lens 433. For example, the third lens 431 may have a negative refractive power, the fourth lens 432 may have a positive refractive power, the fifth lens 433 may have a positive refractive power, and the sixth lens 434 may have a positive refractive power. The third lens 431 may be disposed adjacent to the reflecting member 420, and the sixth lens 434 may be disposed adjacent to the image sensor 450.

[0036] In one embodiment, the second lens group 430 may be arranged such that the reflecting member 420, the infrared blocking filter 440, and the image sensor 450 are located in the second direction (D2). The second lens group 430 may be located between the reflecting member 420 and the image sensor 450 (or the infrared blocking filter 440) when viewed in the second direction (D2). For example, the reflecting member 420, the second lens group 430, the infrared blocking filter 440, and the image sensor 450 may be sequentially aligned in the second direction (D2). In one embodiment, the second lens group 430 may be configured to move to adjust the focal length for AF or close-up photography, which will be described later with reference to FIG. 5.

[0037] The image sensor 450 may be arranged to be aligned in the second direction (D2). The image sensor 450 may generate an electrical signal based on the received optical signal. For example, the image sensor 450 may detect light transmitted through the infrared blocking filter 440 and generate an electrical signal from the optical signal. In one embodiment, when the image stabilization function of the camera module 400 is performed, the first lens group 410 and the reflective member 420 move, and the position of the image focused on the image sensor 450 may vary due to the moving first lens group 410 and the reflective member 420.

[0038] The infrared blocking filter 440 blocks light in the infrared wavelength band or the near-infrared wavelength band from being incident on the image sensor 450, and may be disposed at any position in the optical path between the second lens group 430 and the image sensor 450. In one embodiment, the infrared blocking filter 440 is disposed close to the image sensor 450, thereby suppressing or preventing the infrared blocking filter 440 from being visually exposed to the outside.

[0039] In one embodiment, the camera module 400 may be configured to satisfy Equation 1 below:

[0040]

number

[0041] Here, f may also be the focal length (e.g., a composite focal length) of the entire optical system including the first lens group 410 and the second lens group 430, and f1 may be the focal length of the first lens group 410. Equation 1 may reduce the size of the second lens group 430 disposed in the second direction by limiting the refractive power of the first lens group 410 relative to the refractive power of the entire optical system.

[0042] Moreover, in one embodiment, the camera module 400 may be configured to satisfy the following Equation 2:

[0043]

number

[0044] Here, f may also be the focal length (e.g., a composite focal length) of the entire optical system including the first lens group 410 and the second lens group 430, and f2 may be the focal length of the second lens group 430. Equation 2 limits the refractive power of the second lens group 430 relative to the refractive power of the entire optical system, and the movement distance of the second lens group 430 for changing the focal length may be limited within a specified range.

[0045] In an embodiment, the first lens 411, the second lens 412, the third lens 431, the fourth lens 432, the fifth lens 433, and the sixth lens 434 included in the first lens group 410 and the second lens group 430 may include aspheric lens surfaces. The aspheric lens surface is also represented by the following Equation 3. The first lens 411, the second lens 412, the third lens 431, the fourth lens 432, the fifth lens 433, and the sixth lens 434 may be made of a glass material or a plastic material.

[0046]

number

[0047] In Equation 3, c is the inverse of the radius of curvature of the lens, k is a conic constant, r is the distance from an arbitrary point on the aspheric surface to the optical axis, A to J are aspheric constants, and z may represent the height in the optical axis direction from an arbitrary point on the aspheric surface to the vertex of the aspheric surface.

[0048] FIG. 4 is a diagram illustrating the movement of a first lens group 410 and a reflecting member 420 of a camera module 400 according to an embodiment of the present disclosure.

[0049] 4, the camera module 400 may be configured to adjust the first lens group 410 and the reflective member 420 to compensate for degradation of image quality due to disturbances (e.g., mechanical vibrations). Rotation of the first lens group 410 and the reflective member 420 may change the position of the image focused on the image sensor 450.

[0050] For example, the first lens group 410 and the reflective member 420 may rotate about a rotation axis parallel to the first direction (X). The action of the first lens group 410 and the reflective member 420 rotating or tilting about the first direction (X) may be referred to as pitch.

[0051] Furthermore, the first lens group 410 and the reflective member 420 may rotate about a rotation axis parallel to the second direction (Y). The action of rotating or tilting the first lens group 410 and the reflective member 420 about the second direction (Y) may be referred to as a roll. The first lens group 410 and the reflective member 420 may rotate or tilt about the first direction (X) and / or the second direction (Y) to provide optical image stabilization (OIS). It can improve image stabilizer and minimize image resolution loss.

[0052] FIG. 5 is a diagram illustrating the movement of the second lens group of a camera module according to an embodiment of the present disclosure.

[0053] 5, the camera module 400 may be configured to adjust the focal position by moving the second lens group 430 or at least some of the third lens 431 through sixth lens 434 included in the second lens group 430 in the second direction (D2). For example, the second lens group 430 may move as a whole, or each of the third lens 431 through sixth lens 434 included in the second lens group 430 may move.

[0054] According to an embodiment, in performing the image stabilization (OIS) operation, the image sensor 450 may be shifted in the length direction or width direction of the electronic device 1 (FIG. 1). In a thin electronic device, it may be easy to expand the size of the image sensor and / or to secure space for the image stabilization operation. In an embodiment, if the camera module 400 is used as a telephoto camera, the quality of the captured image may be improved by installing an image stabilization function. If the size of the image sensor 450 is increased, the performance of the camera module 400 may be improved. The second lens group 430 may also be linearly moved (or shifted) along the second direction (D2), so that the focal length corresponding to the position of the object may be adjusted. A miniaturized electronic device such as a smartphone has a thickness of approximately 10 mm, and in that case, the range in which the lens can be linearly moved in the thickness direction may be limited.

[0055] FIG. 6 is a diagram illustrating an optical system of a camera module 500 according to the first embodiment of the present disclosure.

[0056] Referring to FIG. 6, the image sensor 550 may have an image surface or a diagonal length of an active area (hereinafter, referred to as the size of the image sensor) of 1 / 2″ (8 mm), a zoom ratio of 3×, and an f-number of 1.8. The distance may be 200 mm. When the camera module 500 performs a focus adjustment function (e.g., autofocus), the second lens group 530 may move along the second direction (D2), thereby changing the focus position of the optical system of the camera module 500. The camera module 500 may also perform an image stabilization function by rotating the first lens group 510 and the reflective member 520 in response to disturbances (e.g., camera shake, mechanical vibration).

[0057] Table 1 shows data of the optical system of the camera module 500 according to the first embodiment of the present disclosure.

[0058] [Table 1]

[0059] In Table 1, thickness 1 and thickness 2 are indicated as positive numbers, which may mean that they are located in the first direction (D1), and thickness 1 and thickness 2 are indicated as negative numbers, which may mean that they are located in the second direction (D2).

[0060] In Table 1, S1 means the object side surface of the first lens 511 included in the first lens group 510, and S2 means the upper surface of the first lens 511. S3 means the object side surface of the second lens 512 included in the first lens group 510, and S4 means the upper surface of the second lens 512. S5 and S6 mean the entrance surface and exit surface of the reflecting member 520, respectively. S7 means the object side surface of the third lens 531 included in the second lens group 530, and S8 means the upper surface of the third lens 531. S9 means the object side surface of the fourth lens 532 included in the second lens group 530, and S10 means the upper surface of the fourth lens 532. S11 means the object side surface of the fifth lens 533 included in the second lens group 530, and S12 means the upper surface of the fifth lens 533. S13 denotes an object side surface of the sixth lens 534 included in the second lens group 530, and S14 denotes an upper surface of the sixth lens 534. Si denotes one surface of the image sensor 550.

[0061] The aspheric coefficients of the lens according to the first embodiment of the present disclosure may be shown as in the following Table 2. The aspheric coefficients may be calculated based on Equation 3 above.

[0062] [Table 2]

[0063] In Table 2, K is a conic constant, and A to J may represent aspheric constants.

[0064] The optical system of the camera module 500 according to the first embodiment of the present disclosure may satisfy Tables 3 and 4 below.

[0065] [Table 3]

[0066] [Table 4]

[0067] In Table 3, EFL may also mean effective focal length, and Fno may mean aperture value. In Table 4, f may mean focal length of the entire optical system including the first lens group 510 and the second lens group 530, f1 may mean focal length of the first lens 511 of the first lens group 510, f2 may mean focal length of the second lens 512 of the first lens group 510, f3 may mean focal length of the third lens 531 of the second lens group 530, f4 may mean focal length of the fourth lens 532 of the second lens group 530, f5 may mean focal length of the fifth lens 533 of the second lens group 530, f6 may mean focal length of the sixth lens 534 of the second lens group 530, g1 may mean focal length of the first lens group 510, and g2 may mean focal length of the second lens group 530.

[0068] FIG. 7 is a diagram illustrating an optical system of a camera module 600 according to a second embodiment of the present disclosure.

[0069] Referring to FIG. 7, the imaging surface or diagonal length of the active area of ​​the image sensor 650 (hereinafter, the size of the image sensor) may be ½″ (8 mm), the zoom magnification may be 4×, and the fno may be 2.4. The close-up distance may be 150 mm.

[0070] The camera module 600 may move along a second direction (D2) when a focus adjustment function of the second lens group 630 is performed, thereby changing the optical focus position of the camera module 600. The camera module 600 may also perform an image stabilization function by rotating the first lens group 610 and the reflective member 620 in response to disturbances (e.g., camera shake, mechanical vibration).

[0071] Table 5 shows data of the optical system of the camera module 600 according to the second embodiment of the present disclosure.

[0072] [Table 5]

[0073] In Table 5, S1 refers to the object side surface of the first lens 611 included in the first lens group 610, and S2 refers to the upper surface of the first lens 611. S3 refers to the object side surface of the second lens 612 included in the first lens group 610, and S4 refers to the upper surface of the second lens 612. S5 and S6 refer to the entrance surface and exit surface of the reflecting member 620, respectively. S7 refers to the object side surface of the third lens 631 included in the second lens group 630, and S8 refers to the upper surface of the third lens 631. S9 refers to the object side surface of the fourth lens 632 included in the second lens group 630, and S10 refers to the upper surface of the fourth lens 632. S11 refers to the object side surface of the fifth lens 633 included in the second lens group 630, and S12 refers to the upper surface of the fifth lens 633. S13 denotes an object side surface of the sixth lens 634 included in the second lens group 630, and S14 denotes an upper surface of the sixth lens 634. Si denotes one surface of the image sensor 650.

[0074] The aspheric coefficients of the lens according to the second embodiment of the present disclosure may be shown as in the following Table 6. The aspheric coefficients may be calculated based on Equation 3 above.

[0075] [Table 6]

[0076] In Table 6, K is a conic constant, and A to J may represent aspheric constants.

[0077] The optical system of the camera module 600 according to the second embodiment of the present disclosure may satisfy Tables 7 and 8 below.

[0078] [Table 7]

[0079] [Table 8]

[0080] In Table 8, f may represent the focal length of the entire optical system including the first lens group 610 and the second lens group 630, f1 may represent the focal length of the first lens 611 of the first lens group 610, f2 may represent the focal length of the second lens 612 of the first lens group 610, f3 may represent the focal length of the third lens 631 of the second lens group 630, f4 may represent the focal length of the fourth lens 632 of the second lens group 630, f5 may represent the focal length of the fifth lens 633 of the second lens group 630, f6 may represent the focal length of the sixth lens 634 of the second lens group 630, g1 may represent the focal length of the first lens group 610, and g2 may represent the focal length of the second lens group 630.

[0081] FIG. 8 is a diagram illustrating an optical system of a camera module 700 according to a third embodiment of the present disclosure.

[0082] Referring to FIG. 8, the diagonal length of the imaging surface or active area of ​​image sensor 750 (hereinafter, image sensor size) may be ½″ (8 mm), the zoom magnification may be 5×, and the fno may be 2.6. The close-up distance may be 200 mm.

[0083] The camera module 700 may move along a second direction (D2) when a focus adjustment function of the second lens group 730 is performed, thereby changing the focus position of the optical system of the camera module 700. The camera module 700 may also perform an image stabilization function by rotating the first lens group 710 and the reflective member 720 in response to disturbances (e.g., camera shake, mechanical vibration).

[0084] Table 9 shows data of the optical system of the camera module 700 according to the third embodiment of the present disclosure.

[0085] [Table 9]

[0086] In Table 9, S1 means the object side surface of the first lens 711 included in the first lens group 710, and S2 means the upper surface of the first lens 711. S3 means the object side surface of the second lens 712 included in the first lens group 710, and S4 means the upper surface of the second lens 712. S5 and S6 mean the entrance surface and exit surface of the reflecting member 720, respectively. S7 means the object side surface of the third lens 731 included in the second lens group 730, and S8 means the upper surface of the third lens 731. S9 means the object side surface of the fourth lens 732 included in the second lens group 730, and S10 means the upper surface of the fourth lens 732. S11 means the object side surface of the fifth lens 733 included in the second lens group 730, and S12 means the upper surface of the fifth lens 733. S13 denotes an object side surface of the sixth lens 734 included in the second lens group 730, and S14 denotes an upper surface of the sixth lens 734. Si denotes one surface of the image sensor 750.

[0087] The aspheric coefficients of the lens according to the third embodiment of the present disclosure may be shown as in Table 10 below. The aspheric coefficients may be calculated based on Equation 3 above.

[0088] [Table 10]

[0089] In Table 10, K is a conic constant, and A to J may represent aspheric constants.

[0090] The optical system of the camera module 700 according to the third embodiment of the present disclosure may satisfy Tables 11 and 12 below.

[0091] [Table 11]

[0092] [Table 12]

[0093] In Table 12, f may represent the focal length of the entire optical system including the first lens group 710 and the second lens group 730, f1 may represent the focal length of the first lens 711 of the first lens group 710, f2 may represent the focal length of the second lens 712 of the first lens group 710, f3 may represent the focal length of the third lens 731 of the second lens group 730, f4 may represent the focal length of the fourth lens 732 of the second lens group 730, f5 may represent the focal length of the fifth lens 733 of the second lens group 730, f6 may represent the focal length of the sixth lens 734 of the second lens group 730, g1 may represent the focal length of the first lens group 710, and g2 may represent the focal length of the second lens group 730.

[0094] FIG. 9 is a diagram illustrating an optical system of a camera module 800 according to a fourth embodiment of the present disclosure.

[0095] Referring to FIG. 9, the diagonal length of the imaging surface or active area of ​​the image sensor 850 (hereinafter, the size of the image sensor) may be 1 / 1.57″ (10 mm), the zoom magnification may be 2.9×, and the fno may be 1.9. The close-up distance may be 500 mm.

[0096] The camera module 800 may move along a second direction (D2) when a focus adjustment function of the second lens group 830 is performed, thereby changing the optical focus position of the camera module 800. The camera module 800 may also perform an image stabilization function by rotating the first lens group 810 and the reflective member 820 in response to disturbances (e.g., camera shake, mechanical vibration).

[0097] Table 13 shows data of the optical system of the camera module 800 according to the fourth embodiment of the present disclosure.

[0098] [Table 13]

[0099] In Table 13, S1 means the object side surface of the first lens 811 included in the first lens group 810, and S2 means the upper surface of the first lens 811. S3 means the object side surface of the second lens 812 included in the first lens group 810, and S4 means the upper surface of the second lens 812. S5 and S6 mean the entrance surface and exit surface of the reflecting member 820, respectively. S7 means the object side surface of the third lens 831 included in the second lens group 830, and S8 means the upper surface of the third lens 831. S9 means the object side surface of the fourth lens 832 included in the second lens group 830, and S10 means the upper surface of the fourth lens 832. S11 means the object side surface of the fifth lens 833 included in the second lens group 830, and S12 means the upper surface of the fifth lens 833. S13 denotes an object side surface of the sixth lens 834 included in the second lens group 830, and S14 denotes an upper surface of the sixth lens 834. Si denotes one surface of the image sensor 850.

[0100] The aspheric coefficients of the lens according to the fourth embodiment of the present disclosure may be shown as in Table 14 below. The aspheric coefficients may be calculated based on Equation 3 above.

[0101] [Table 14]

[0102] In Table 14, K is a conic constant, and A to J may represent aspheric constants.

[0103] The optical system of the camera module 800 according to the fourth embodiment of the present disclosure may satisfy Tables 15 and 16 below.

[0104] [Table 15]

[0105] [Table 16]

[0106] In Table 16, f may represent the focal length of the entire optical system including the first lens group 810 and the second lens group 830, f1 may represent the focal length of the first lens 811 of the first lens group 810, f2 may represent the focal length of the second lens 812 of the first lens group 810, f3 may represent the focal length of the third lens 831 of the second lens group 830, f4 may represent the focal length of the fourth lens 832 of the second lens group 830, f5 may represent the focal length of the fifth lens 833 of the second lens group 830, f6 may represent the focal length of the sixth lens 834 of the second lens group 830, g1 may represent the focal length of the first lens group 810, and g2 may represent the focal length of the second lens group 830.

[0107] FIG. 10 is a diagram illustrating an optical system of a camera module 900 according to a fifth embodiment of the present disclosure.

[0108] Referring to FIG. 10, the diagonal length of the imaging surface or active area of ​​the image sensor 950 (hereinafter, the size of the image sensor) may be 1 / 2″ (8 mm) and the fno may be 2.4. The close-up distance may be 300 mm.

[0109] The camera module 900 may move along a second direction (D2) when a focus adjustment function of the second lens group 930 is performed, thereby changing the optical focus position of the camera module 900. The camera module 900 may also perform an image stabilization function by rotating the first lens group 910 and the reflective member 920 in response to disturbances (e.g., camera shake, mechanical vibration).

[0110] Table 17 shows data of the optical system of the camera module 900 according to the fifth embodiment of the present disclosure.

[0111] [Table 17]

[0112] In Table 17, S1 means the object side surface of the first lens included in the first lens group 910, and S2 means the upper surface of the first lens. S3 and S4 mean the entrance surface and exit surface of the reflecting member 920, respectively. S5 means the object side surface of the second lens 931 included in the second lens group 930, and S6 means the upper surface of the second lens 931. S7 means the object side surface of the third lens 932 included in the second lens group 930, and S8 means the upper surface of the third lens 932. S9 means the object side surface of the fourth lens 933 included in the second lens group 930, and S10 means the upper surface of the fourth lens 933. S11 means the object side surface of the fifth lens 934 included in the second lens group 930, and S12 means the upper surface of the fifth lens 934. Si means one surface of the image sensor 950.

[0113] The aspheric coefficients of the lens according to the fifth embodiment of the present disclosure may be shown as in Table 18 below. The aspheric coefficients may be calculated based on Equation 3 above.

[0114] [Table 18]

[0115] In Table 18, K is a conic constant, and A to J may represent aspheric constants.

[0116] The optical system of the camera module 900 according to the fifth embodiment of the present disclosure may satisfy Tables 19 and 20 below.

[0117] [Table 19]

[0118] [Table 20]

[0119] In Table 20, f may represent the focal length of the entire optical system including the first lens group 910 and the second lens group 930, f1 may represent the focal length of the first lens of the first lens group 910, f2 may represent the focal length of the second lens 931 of the second lens group 930, f3 may represent the focal length of the third lens 932 of the second lens group 930, f4 may represent the focal length of the fourth lens 933 of the second lens group 930, f5 may represent the focal length of the fifth lens 934 of the second lens group 930, g1 may represent the focal length of the first lens group 910, and g2 may represent the focal length of the second lens group 930.

[0120] 11 and 12 are front and rear perspective views of an electronic device according to an embodiment of the present disclosure.

[0121] 11 and 12, an electronic device 300 (e.g., electronic device 1 (FIG. 1)) according to an embodiment may include a housing 310 including a first side (or front side) 310A, a second side (or back side) 310B, and a third side (or side) 310C surrounding a space between the first side 310A and the second side 310B. The housing 310 may also be referred to as a structure forming a part of the first side 310A, the second side 310B, and the third side 310C.

[0122] The first side 310A may be formed, at least in part, by a substantially transparent front plate 302 (e.g., a glass or polymer plate including various coating layers). The second side 310B may be formed by a substantially opaque back plate 311. The back plate 311 may be formed, for example, of coated or colored glass, ceramics, polymers, metals (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing materials. The third side 310C may be formed by a side bezel structure (or side member) 318 coupled to the front plate 302 and the back plate 311 and including a metal and / or a polymer.

[0123] The back plate 311 and the side bezel structure 318 may be integrally formed and comprise the same material (eg, a metallic material such as aluminum).

[0124] The rear plate 311 may include two second regions 310E extending seamlessly from a partial region of the second surface 310B toward the front plate 302. The second regions 310E may be included at both ends of the long edge of the rear plate 311.

[0125] The front plate 302 (or the back plate 311) may include only one of the first regions 310D (or the second regions 310E). In other embodiments, the front plate 302 (or the back plate 311) does not include any part of the first region 310D (or the second region 310E).

[0126] When viewed from the side of the electronic device 300, the side bezel structure 318 may have a first thickness (or width) in a side direction (e.g., a short side) that does not include the first region 310D or the second region 310E as described above, and may have a second thickness thinner than the first thickness in a side direction (e.g., a long side) that includes the first region 310D or the second region 310E as described above.

[0127] The display 301 may be visually exposed through a substantial portion of the front plate 302. For example, at least a portion of the display 301 may be visually exposed through the front plate 302 including the first side 310A and the first region 310D of the third side 310C. The display 301 may be disposed behind the front plate 302.

[0128] The audio modules 303 , 304 , and 307 may include microphone holes 303 , 304 and a speaker hole 307 .

[0129] The camera modules 305, 312, 313 may include a first camera module 305 (e.g., a punch-hole camera) exposed on a first surface 310A of the electronic device 300, a second camera module 312 exposed on a second surface 310B, and / or a flash 313.

[0130] The first camera module 305 may be visually exposed through a portion of the screen display area 310A, 310D of the display 301. For example, the first camera module 305 may be visually exposed to a portion of the screen display area 310A, 310D through an opening formed in a portion of the display 301. As another example, the first camera module 305 (e.g., an under-display camera) is disposed on the back of the display 301 and is not visually exposed to the screen display area 310A, 310D.

[0131] The second camera module 312 may include multiple cameras (e.g., dual cameras, triple cameras, or quad cameras), but is not limited to including multiple cameras and may include one camera.

[0132] The first camera module 305 and the second camera module 312 may include one or more lenses, an image sensor, and / or an image signal processor. In one embodiment, two or more lenses (an infrared camera, a wide-angle lens, and a telephoto lens) and an image sensor may be arranged on one side of the electronic device 300. The first camera module 305 and the second camera module 312 may be configured to have different angles of view. For example, the first camera module 305 may be configured to have the narrowest angle of view, and the second camera module 312 may be configured to have the widest angle of view. By designing the camera modules to have different angles of view, it is possible to capture images of an object (subject) at various depths and implement a zoom function. In addition, it is possible to prevent the thickness of the electronic device 300 from increasing while implementing a high zoom ratio.

[0133] In one embodiment, the first camera module 305 may include a folded optical system as shown in FIG. 3. The first camera module 305 may obtain a high-quality telephoto image by rotating or tilting the first lens group and the reflective member to implement an image stabilization function. In addition, the first camera module 305 may easily adjust the telephoto function, close-up function, and lens brightness without substantially affecting the thickness of the electronic device 300 because the second lens group may be implemented parallel to the length or width of the electronic device for focus adjustment.

[0134] The key input device 317 may be disposed on the third surface 310C (e.g., the first region 310D and / or the second region 310E) of the housing 310. The connector hole 308 may accommodate a connector. The connector hole 308 may be disposed on the third surface 310C of the housing 310.

[0135] FIG. 13 is a block diagram illustrating a portable terminal 2000 according to an embodiment of the present disclosure.

[0136] 13, a portable terminal 2000 according to an embodiment of the present disclosure may include an application processor 2100, an image sensor 2200, a display device 2400, a working memory 2500, a storage 2600, a user interface 2700, and a wireless transceiver 2800, and the application processor 2100 may include an image signal processor 2300. The processor 12 of FIG. 1 may be applied as the image signal processor 2300. The image sensor 230 of FIG. 2 or the image sensor 450 of FIG. 3 may be applied as the image sensor 2200. In one embodiment, the image signal processor 2300 may be implemented as an integrated circuit separate from the application processor 2100.

[0137] The portable terminal 2000 may include a plurality of camera modules, each of which is designed to have a different angle of view, and may capture an image of an object at various depths and implement a zoom function, thereby preventing the thickness of the portable terminal 2000 from increasing while implementing a high zoom ratio.

[0138] At least one camera module included in the portable terminal 2000 may include a folding optical system as shown in Fig. 3. The camera module may obtain a high-quality telephoto image by rotating or tilting the first lens group and the reflecting member to implement an image stabilization function. In addition, the camera module 305 may be implemented with the second lens group parallel to the length or width of the portable terminal 2000 for focus adjustment, so that the telephoto function, close-up function, and lens brightness may be easily adjusted without substantially affecting the thickness of the portable terminal 2000.

[0139] The application processor 2100 may be provided as a system-on-chip (SoC) that controls the overall operation of the image processing device 2000 and runs application programs, an operating system (OS), etc. The application processor 2100 may control the operation of the image signal processor 2300 and provide converted image data generated by the image signal processor 2300 to the display device 2400 or store it in the storage 2600.

[0140] The image sensor 2200 may generate image data, for example, far-eye image data, based on the received optical signals and provide the image data to an image signal processor 2300 .

[0141] The image signal processor 2300 may perform image data processing.

[0142] The working memory 2500 is composed of DRAM (dynamic random access memory), SRAM (static Volatile memory such as random access memory (RAM) or ferroelectric random access memory), RRAM (resistive random access memory), RRAM (resistive random access The working memory 2500 may be implemented by a non-volatile resistive memory such as a phase-change random access memory (PRAM) or a phase-change random access memory (PRAM). The working memory 2500 may store programs and / or data to be processed or executed by the application processor 2100.

[0143] The storage 2600 may be implemented with a non-volatile memory device such as a NVRAM flash or a resistive memory. For example, the storage 2600 may be implemented with a memory card (MMC (multimedia card), eMMC (embedded multimedia card), SD (secure digital) card, micro The storage 2600 may be provided as a memory card (e.g., a USB flash drive, a USB flash drive, a USB flash drive), a USB flash drive (e.g. ...

[0144] The user interface 2700 may be embodied by a variety of devices that may receive user input, such as a keyboard, a curtain key panel, a touch panel, a fingerprint sensor, a microphone, etc. The user interface 2700 may receive the user input and provide a signal corresponding to the received user input to the application processor 2100.

[0145] The wireless transceiver unit 2800 may include a transceiver 2810, a modem 2820, and an antenna 2830.

[0146] As above, the exemplary embodiment has been disclosed with the drawings and the specification. In this specification, the present embodiment has been described using specific terms, but these terms are merely used for the purpose of describing the technical idea of ​​the present disclosure, and are not used to limit the meaning or the scope of the present disclosure described in the claims. Therefore, a person having ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical scope of protection of the present disclosure is defined by the technical idea of ​​the claims. [Explanation of symbols]

[0147] 1 Electronic equipment 11 Display 12 processors 13,250 Memory 14,400 Camera Module 210 Lens Assembly 220 Flash 230 Image Sensor 240 Image Stabilizer 260,2300 Image Signal Processor 410 First Lens Group 420 Reflective material 430 2nd Lens Group 440 UV Filter 450,2200 Image Sensor 2000 Portable terminals 2100 Application Processor 2400 display device 2500 Working Memory 2600 Storage 2700 User Interface 2800 Radio Transmitter / Receiver

Claims

1. a first lens group including at least one lens; a reflecting member that reflects light incident on the first lens group from a first direction in a second direction intersecting the first direction; a second lens group located in the second direction and including at least three lenses; an image sensor configured to receive the optical signal that has passed through the second lens group and generate an image-related electrical signal based on the optical signal; A camera module, wherein, when a focal length of the first lens group is f1 and a total focal length including the first lens group and the second lens group is f, 1.2<f1 / f<3 is satisfied.

2. the first lens group is located on the object side; a first lens having a positive refractive power; 2. The camera module of claim 1, further comprising: a second lens having a negative refractive power.

3. The second lens group is a third lens located adjacent to the reflecting member and having a negative refractive power; a fourth lens having a positive refractive power; and a fifth lens having negative refractive power.

4. The second lens group is Further comprising a sixth lens closer to the image sensor than the fifth lens, The camera module according to claim 3 , wherein the sixth lens has a positive refractive power.

5. 4. The camera module of claim 3, wherein when a focal length of the second lens group is f2 and a total focal length including the first lens group and the second lens group is f, 1<f2 / f<2 is satisfied.

6. an infrared blocking filter disposed between the second lens group and the image sensor; The camera module according to claim 1 , wherein the image sensor detects light transmitted through the infrared blocking filter and generates the optical signal as the electrical signal.

7. The camera module according to claim 1 , wherein the first lens group and the reflecting member tilt about the first direction in response to an external disturbance.

8. The camera module of claim 1 , wherein the second lens group moves linearly along the second direction between the reflecting member and the image sensor in response to a position of an object.

9. The camera module of claim 8 , wherein the second lens group is positioned closer to the reflecting member during close-up photography than during long-distance photography.

10. The camera module of claim 8 , wherein the second lens group is positioned closer to the image sensor during long distance photography than during close distance photography.

11. a first lens group located in a first direction parallel to an object side and including a first lens and a second lens; a reflecting member that reflects light incident from the first direction in a second direction intersecting the first direction; a second lens group located in the second direction and including a third lens, a fourth lens, and a fifth lens; an image sensor that detects light that has passed through the second lens group; an electronic device, wherein, when a focal length of the second lens group is f2 and a total focal length including the first lens group and the second lens group is f, 1<f2 / f<2 is satisfied.

12. the first lens has a positive refractive power; The electronic device according to claim 11 , wherein the second lens has a negative refractive power.

13. an infrared blocking filter disposed between the second lens group and the image sensor; the second lens group further includes a sixth lens disposed between the fifth lens and the image sensor, The electronic device according to claim 11, wherein the image sensor detects light transmitted through the infrared blocking filter and generates an optical signal as an electrical signal.

14. the third lens has a negative refractive power; the fourth lens has a positive refractive power, the fifth lens has a negative refractive power, The electronic device according to claim 13 , wherein the sixth lens has a positive refractive power.

15. 12. The electronic device of claim 11, wherein, when a focal length of the first lens group is f1 and a total focal length including the first lens group and the second lens group is f, 1.2<f1 / f<3 is satisfied.

16. the first lens group and the reflecting member tilt around the first direction in response to a disturbance; The electronic device of claim 11 , wherein the second lens group moves linearly along the second direction between the reflecting member and the image sensor in response to a position of the object.

17. 1. An electronic device including a plurality of camera modules, a first camera module having a first angle of view; a second camera module having a second angle of view different from the first angle of view; The first camera module is a first lens group located in a first direction and including at least two lenses; a reflecting member that reflects light incident from the first direction in a second direction intersecting the first direction; a second lens group located in the second direction and including at least three lenses; an image sensor configured to receive the optical signal that has passed through the second lens group and generate an image-related electrical signal based on the optical signal; An electronic device, wherein, when a focal length of the first lens group is f1 and a total focal length including the first lens group and the second lens group is f, 1.2<f1 / f<3 is satisfied.

18. the first lens group includes a first lens and a second lens, the second lens group includes a third lens, a fourth lens, a fifth lens, and a sixth lens, the first lens has a positive refractive power; the second lens has a negative refractive power; the third lens has a negative refractive power; the fourth lens has a positive refractive power, the fifth lens has a negative refractive power, The electronic device according to claim 17 , wherein the sixth lens has a positive refractive power.

19. 18. The electronic device of claim 17, wherein, when a focal length of the second lens group is f2 and a total focal length including the first lens group and the second lens group is f, 1<f2 / f<2 is satisfied.

20. the first lens group and the reflecting member tilt around the first direction in response to a disturbance; 20. The electronic device of claim 17, wherein the second lens group moves linearly along the second direction between the reflecting member and the image sensor in response to a position of an object.

Images