Camera module and mobile terminal

Abstract

A camera module embodying the present invention includes a first holder having a plurality of first lens groups arranged in a first direction, a second holder having a plurality of second lens groups arranged in the first direction, a first driving means for moving the first holder having the plurality of first lens groups in the optical axis direction, each of the plurality of first lens groups having a plurality of lenses, and each of the plurality of second lens groups having a plurality of lenses.

Description

[Technical Field]

[0001] An embodiment of the invention relates to a camera module and a mobile terminal having the same. [Background technology]

[0002] As smartphones and tablet PCs have become more popular, camera modules mounted on mobile terminals such as smartphones and tablet PCs have replaced portable cameras (digital cameras, etc.). As the development of camera modules using high-resolution sensors has rapidly increased and multi-functional smartphones such as high-magnification phones and foldable phones have been developed, there is a demand for reducing the height or thickness of high-magnification camera modules, as some of the camera modules protrude. Summary of the Invention [Problem to be solved by the invention]

[0003] An embodiment of the present invention may provide a camera module in which a first lens group having multiple lens modules moves in the optical axis direction or vertical direction, and a second lens group having multiple lens modules moves in the horizontal direction. An embodiment of the present invention may provide a camera module in which a first lens group having multiple lens modules moves in the optical axis direction or vertical direction as a whole, and a second lens group having multiple lens modules moves in the horizontal direction as a whole. An embodiment of the present invention may provide a camera module in which multiple first lens groups of multiple camera modules move in the optical axis direction or vertical direction and protrude or retract into a terminal case, and a mobile terminal having the same. An embodiment of the present invention may provide a camera module in which multiple first lens groups and multiple second lens groups overlap in the optical axis direction or horizontally depending on the driving mode, and a mobile terminal having the same. An embodiment of the present invention may provide a camera module that protrudes outside the terminal when the camera is driven and retracts inside the terminal when it is not driven, and a mobile terminal having the same.

[0004] An embodiment of the present invention may provide a camera module in which multiple lenses are stacked in a direction perpendicular to the thickness of a terminal. An embodiment of the present invention may provide a camera module in which optical axes passing through the centers of the multiple lenses are aligned in a driving mode and the centers of the multiple lenses are offset from each other in a non-driving mode. An embodiment of the present invention may provide a camera module in which a lens unit having multiple lenses can slide down or up in the optical axis direction. An embodiment of the present invention may provide a camera module and a mobile terminal having the same in which a module having multiple lenses protrudes above a terminal case when driven and does not protrude from the terminal case when not driven. An embodiment of the present invention may provide a camera module and a mobile terminal having the same in which the camera can be raised or lowered toward the terminal case depending on whether or not it is in operation. [Means for solving the problem]

[0005] A camera module according to an embodiment of the invention includes a first holder having a plurality of first lens groups arranged in a first direction, a second holder having a plurality of second lens groups arranged in the first direction, and a first driving means for moving the first holder having the plurality of first lens groups in an optical axis direction, and each of the plurality of first lens groups and each of the plurality of second lens groups can have a plurality of lenses aligned on different optical axes.

[0006] According to an embodiment of the invention, the optical system may include a second driving means for moving a second holder having the plurality of second lens groups in a direction perpendicular to the optical axis, and the first holder may overlap the second holder in a vertical or horizontal direction. The optical system may include a plurality of image sensors disposed below each of the plurality of second lens groups, and a printed circuit board on which the plurality of image sensors are disposed. The plurality of second lens groups may move in a second direction perpendicular to the first direction. The first and second driving means simultaneously move the first and second holders to overlap vertically in a driving mode, and simultaneously drive the first holder to move downward and the second holder to move horizontally based on a lower portion of the first holder when a transition signal from the driving mode to a non-driving mode is applied. The optical system may include three lens modules each having the first and second lens groups, one of which is a wide-angle lens module and the other is a telephoto lens module. The first holder having the plurality of first lens groups may have a length in a first direction that is equal to or greater than a length in a second direction, and the second holder having the plurality of second lens groups may have a length in the first direction that is equal to or smaller than a length in the second direction. Each of the first and second driving means may include at least one of a piezoelectric member, an actuator, or a stepping motor.

[0007] According to an embodiment of the invention, the plurality of first lens groups may include a first-1st lens group and a first-2nd lens group arranged in a first direction, and the plurality of second lens groups may include a second-1st lens group and a second-2nd lens group arranged in the first direction, the first-1st lens group and the second-1st lens group being a first lens module, the first-2nd lens group and the second-2nd lens group being a second lens module, and the lenses closest to the object side of the first-1st lens group and the second-1st lens group have positive refractive power, and the lenses closest to the object side of the first-2nd lens group and the second-2nd lens group have negative refractive power. The thickness of the first holder may be in the range of 30% to 40% of the TTL of the entire optical system, and the thickness of the second holder may be in the range of 50% to 60% of the TTL of the entire optical system.

[0008] A camera module according to an embodiment of the invention includes a first holder having a plurality of first lens groups, a second holder having a plurality of second lens groups, and a driving means for moving the first holder having the plurality of first lens groups in the optical axis direction, wherein the first holder overlaps the second holder in a vertical direction, the plurality of first lens groups are arranged in one direction, each of the plurality of first lens groups has a plurality of lenses, and each of the plurality of second lens groups has a plurality of lenses and can overlap each of the plurality of first lens groups in a vertical direction.

[0009] A camera module according to an embodiment of the invention includes a housing having a plurality of lens modules, each having a first lens group and a second lens group in a vertical direction, and a driving unit for moving the first lens group from the housing in an optical axis direction, the housing including a first holder supporting the first lens group of each of the plurality of lens modules and a second holder supporting the second lens group of each of the plurality of lens modules, the first holder and the first lens group being moved to simultaneously pop up or down by the driving unit. A minimum distance between the lenses of the first lens group and the lenses of the second lens group facing each other may be 0.5 mm or less, and a maximum distance between the lenses of the first lens group and the lenses of the second lens group facing each other may be 4 mm or more.

[0010] A camera module according to an embodiment of the invention may include a first reflecting mirror that reflects incident light, a second reflecting mirror that reflects light reflected through the first reflecting mirror, a lens module disposed between the first and second reflecting mirrors and having a plurality of lenses, a holder that supports the first reflecting mirror, the second reflecting mirror, and each lens of the lens module, a first guide shaft that is connected to one side of the holder and slides the first reflecting mirror, the second reflecting mirror, and each lens of the lens module up or down, and a driving means that drives the first guide shaft.

[0011] According to an embodiment of the invention, the lens module may include at least one second guide shaft connected to the other side of the holder and supporting movement of the first reflecting mirror, the second reflecting mirror, and the lens module. The driving means may include a mover connected to the first guide shaft and a stator facing the mover. The driving means may include at least one of a piezoelectric element, an actuator, or a stepping motor. The first reflecting mirror, the lenses, and the second reflecting mirror move toward the second reflecting mirror as the first guide shaft slides up, and the first reflecting mirror, the lenses, and the second reflecting mirror move toward the first reflecting mirror as the first guide shaft slides down. The lens module may include holders supporting the outer sides of the first reflecting mirror, the lenses, and the second reflecting mirror, respectively, and a movement guide through which the first guide shaft passes. The first reflecting mirror has a transparent window on the top and slides together with a protective cover that protects the top of the lens module. The height difference of the upper ends of the sliding lens modules may be in the range of 25% to 35% of the height or diameter of the lens modules. The camera module may include an image sensor that collects light reflected by the second reflecting mirror, and a printed circuit board on which the image sensor is disposed. A mobile terminal according to an embodiment of the invention may include the camera module. [Effects of the Invention]

[0012] The camera module according to the embodiments of the present invention pops up or protrudes from a terminal only when driven, and conversely, pops down or retracts when not driven, improving the appearance and preventing deterioration of lens performance. It can provide a long TTL when the camera module is driven and protect the lens when not driven. By moving each of the multiple first lens groups and / or multiple second lens groups together as a unit, it is possible to simultaneously align the optical axes of multiple lens modules without increasing the number of lens drivers.

[0013] The camera module according to the embodiment of the present invention has an advantage that even if the thickness of the lens module increases according to the performance, a part of the camera module does not protrude when the camera is not in use or is not driven. In addition, the appearance design of a high-magnification mobile terminal can be improved, and the reliability of a mobile terminal such as a multi-function phone can be improved.

[0014] The camera module according to the embodiments of the present invention slides up or protrudes from the terminal only when driven, and conversely, pops down or retracts when not driven, improving the appearance and preventing degradation of lens performance. By arranging the lenses perpendicular to the thickness direction of the mobile terminal, the TTL of the optical system can be extended and the lenses can be protected when not driven. By tilting and accommodating multiple lenses, the present invention can reduce the height or thickness of the lens module, providing functions such as autofocus, zoom, and image stabilization while simplifying the structure, reducing module size, and minimizing power consumption. Even if the number of lenses in the lens module increases depending on performance, there is an advantage in that no part of the camera module protrudes when the camera is not in use or is not driven. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is an exploded perspective view of a camera module according to a first embodiment of the invention. [Figure 2] 2 is an example of a cross-sectional side view of the camera module of FIG. 1 in which the first and second lens groups are joined together. [Figure 3] 3 is an example of a side cross-sectional view showing an example of driving the first lens group and the second lens group in the camera module of FIG. 2. [Figure 4] This is an example driven by the driving means of the camera module in FIG. [Figure 5] 5 is a driving example using another example of the driving means in FIG. 4. [Figure 6] 5 is a driving example using another example of the driving means in FIG. 4. [Figure 7]5 is a driving example using another example of the driving means in FIG. 4. [Figure 8] 10 is an example of a side cross section showing a driving state of a camera module according to a second embodiment. [Figure 9] 9 is a diagram illustrating an example of driving the lens group of the camera module of FIG. 8. [Figure 10] 9 is a diagram illustrating an example of driving the lens group of the camera module of FIG. 8. [Figure 11] 9 is a diagram illustrating an example of driving the lens group of the camera module of FIG. 8. [Figure 12] 10 is another example of driving the lens group of the camera module of FIG. 8. [Figure 13] 10 is another example of driving the lens group of the camera module of FIG. 8. [Figure 14] 10A and 10B are diagrams comparing states before and after driving of the first and second lens groups in the camera module according to the first embodiment. [Figure 15] FIG. 10 is an exploded perspective view of a camera module according to a third embodiment of the invention. [Figure 16] FIG. 16 is a perspective view showing an example of a driving unit of the camera module in FIG. 15. [Figure 17] 16 is an example of a plan view showing a first lens group in the camera module of FIG. 15. [Figure 18] 10A and 10B are side cross-sectional views showing examples of a camera module according to a third embodiment before and during driving. [Figure 19] Another example of FIG. 15 is a plan view of a camera module having three first lens groups. [Figure 20] As side cross-sectional views of the camera module in FIG. 19, (A) and (B) are cross-sectional views showing the camera module before driving and in the driving state. [Figure 21] 10A and 10B are examples of side cross-sectional views showing a camera module according to a fourth embodiment before it is driven or in a driven state. [Figure 22] 1 is an example of a mobile terminal having a camera module according to an embodiment of the invention. [Figure 23] 1 is an example of a mobile terminal having a camera module according to an embodiment of the invention. [Figure 24] 1 is an example of a mobile terminal having a camera module according to an embodiment of the invention. [Figure 25] 10A and 10B are perspective views of a mobile terminal to which a camera module according to a fifth embodiment of the present invention is coupled, in which (A) shows the state before the camera is used, and (B) shows the state when the camera is used. [Figure 26] FIG. 26 is a first example of a side cross-sectional view of the camera module of FIG. 25. [Figure 27] 27 is a driving example of the camera module of FIG. 26. [Figure 28] 26 is a second example of a side cross-sectional view of the camera module of FIG. 25. [Figure 29] 29 is a driving example of the camera module of FIG. 28. [Figure 30] 26 is a third example of a side cross-sectional view of the camera module of FIG. 25. [Figure 31] 31 shows an example of driving the camera module of FIG. 30. [Figure 32] 10 is a view showing a holder and a guide shaft for supporting a lens of a camera module according to a fifth embodiment of the present invention. [Figure 33] 33 is another example of a cross-sectional side view of FIG. 32. [Figure 34] 33 is another example of the holder and guide shaft of FIG. 32. [Figure 35] 29 is a diagram illustrating an example of coupling a transparent cover onto the camera module of FIG. 28. [Figure 36] (A) is a diagram showing the relationship between the sensor-side lens and the image sensor, (B) is a diagram explaining the relationship between the sensor-side lens and the second reflecting mirror due to incident light, and (C) is a diagram explaining the image sensor. DETAILED DESCRIPTION OF THE INVENTION

[0016] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The technical concept of the present invention is not limited to the described embodiments and may be embodied in various different forms. One or more of the components of the embodiments may be selectively combined or substituted within the scope of the technical concept of the present invention. Furthermore, terms (including technical and scientific terms) used in the embodiments of the present invention shall be interpreted as having meanings commonly understood by those skilled in the art to which the present invention pertains, unless expressly specified otherwise. Commonly used terms, such as dictionary-defined terms, shall be interpreted in light of the context of the relevant technology. Furthermore, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention. In this specification, the singular form "a," "an," or "an" may also include the plural form unless otherwise specified. For example, "at least one (or more) of A and B and C" refers to one or more of all possible combinations of A, B, and C. Furthermore, terms such as "first," "second," "A," "B," "(A)," and "(B)" may be used in describing components of the embodiments of the present invention. Such terms are used to distinguish a component from other components and do not limit the nature or order of the components. When a component is described as being "coupled," "coupled," or "connected" to another component, this includes both cases where the component is directly coupled or connected to the other component and cases where another component is "coupled," "coupled," or "connected" between the two components. When a component is described as being formed or located "above or below" another component, "above or below" does not only include cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or located between the two components. Furthermore, when the term "above or below" is used, it can mean not only an upper direction but also a lower direction relative to one component.

[0017] The "optical axis direction" used below is defined as the optical axis direction of the lens in a camera device. The optical axis of the lens can correspond to the optical axis of the image sensor. The "optical axis direction" can also correspond to the "up / down direction" or "z-axis direction." The "autofocus function" is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens along the optical axis according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. The term "autofocus" can be used interchangeably with "AF (Auto Focus)." The term "image stabilization function" is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis direction to offset vibrations (movements) that occur in the image sensor due to external forces. The term "image stabilization" can be used interchangeably with "OIS (Optical Image Stabilization)." The terms "dual or triple camera" and "camera device" can be used interchangeably. In other words, a camera device can be described as including two or three lens modules.

[0018] The optical device may be any one of a cell phone, a mobile phone, a smartphone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and a navigation system. However, the type of optical device is not limited thereto, and any device for taking videos or photos may be included in the optical device. The optical device may include a main body. The main body may form the exterior of the optical device. The main body may house a camera device. A display unit may be arranged on one side of the main body. For example, a display unit and a camera device may be arranged on one side of the main body, and an additional camera device may be arranged on the other side of the main body (the side opposite the one side). The optical device may include a display unit. The display unit may be arranged on one side of the main body. The display unit may output an image captured by the camera device. The optical device may include a camera device. The camera device may be arranged on the main body. At least a portion of the camera device is housed inside the main body. A plurality of camera devices may be provided. The camera devices may be disposed on one side of the main body and on the other side of the main body. The camera devices may capture an image of a subject. The camera devices may include a lens driving device. The lens driving device may be a lens driving motor or a voice coil motor. The camera devices may include at least one or both of an AF actuator and an OIS actuator.

[0019] <First Example> FIG. 1 is an exploded perspective view of a camera module according to a first embodiment of the invention, FIG. 2 is an example of a side cross-sectional view of the camera module of FIG. 1 with the first and second lens groups joined together, FIG. 3 is an example of a side cross-sectional view showing an example of driving the first lens group and the second lens group in the camera module of FIG. 2, FIG. 4 is a drawing showing an example of driving by a driving means of the camera module of FIG. 2, and FIGS. 5 to 7 are drawings showing examples of driving by another example of the driving means of FIG. 4.

[0020] 1 to 4, the camera module may include a first holder 11 having a plurality of first lens groups 212, 232, a second holder 21 having a plurality of second lens groups 214, 234, and an image sensor module 30 that converts light incident through the first lens groups 212, 232 and the second lens groups 214, 234 into an electrical signal. The camera module may include a module having a plurality of lens modules 210, 230 and a plurality of image sensors 35, 35A. The image sensor module 30 may include a printed circuit board 31 on which the plurality of image sensors 35, 35A are arranged.

[0021] A housing (not shown) is further disposed outside the first holder 11 and the second holder 21. The housing may include a space for accommodating the movement of the first holder 11 in the optical axis direction and a space for accommodating the movement of the second holder 21 in the horizontal direction. The first holder 11 may be a first lens barrel that supports and accommodates a plurality of first lens groups 212 and 232. The second holder 21 may be a second lens barrel that supports and accommodates a plurality of second lens groups 214 and 234. In a driving or photographing mode, as shown in FIG. 2, the first holder 11 is disposed above the second holder 21, allowing the first holder 11 and the second holder 21 to overlap vertically. In a non-driving or non-photographing mode, as shown in FIG. 3, the first holder 11 is disposed on the side of the second holder 21, allowing the first holder 11 and the second holder 21 to overlap horizontally.

[0022] The lens modules 210 and 230 may include a first lens module 210 and a second lens module 230 aligned on different optical axes and spaced apart in a first direction X. The first lens module 210 may include a first-1 lens group 212 and a second-1 lens group 214 aligned on a first optical axis in a driving mode. The second lens module 230 may include a first-2 lens group 232 and a second-2 lens group 234 aligned on a second optical axis in a driving mode. The first lens groups 212 and 232 arranged on the first holder 11 may be spaced apart at a first interval. The second lens groups 214 and 234 arranged on the second holder 21 may be spaced apart at a first interval. The first lens groups 212 and 232 may include a first-1 lens group 212 and a second lens group 232 spaced apart in the first direction X. The plurality of second lens groups 214 and 234 may include a 2-1 lens group 232 and a 2-2 lens group 234 spaced apart in the first direction X. The first and second holders 11 and 21 may be made of a non-magnetic material. The first and second holders 11 and 21 may be made of a metal or plastic material. If they are made of a metal material, they can block EMI (Electro Magnetic Interference), and if they are made of a plastic material, they can reduce weight and facilitate coupling with the lenses.

[0023] The length of the first holder 11 in the first direction X may be the same as or different from the length of the second holder 21 in the first direction X. The length of the first holder 11 in the second direction Y may be the same as or different from the length of the second holder 21 in the second direction Y. Each of the first and second holders 11 and 21 may have a length in the first direction X greater than a length in the second direction Y. Here, the first direction X may be a direction in which the lens modules 210 and 230 are arranged, and the second direction Y may be a direction perpendicular to the first direction X. For example, when the camera is disposed in a case 501 of a terminal as shown in FIG. 22, the length in the first direction X is longer than the length in the second direction Y. When the camera is disposed in a terminal as shown in FIG. 23, the length in the first direction X is longer than the length in the second direction Y. When the camera is disposed in a terminal as shown in FIG. 24, the lengths in the first direction X and the second direction Y may be the same as or different from each other.

[0024] 1, the first holder 11 and the second holder 21 may not be physically connected. The first holder 11 and the second holder 21 may not be electrically connected. In a driving mode, the first holder 11 may protrude 4 mm or more from the outside of the terminal case. The image sensor module 30 is disposed below the first and / or second lens groups 11 and 21. The image sensors 35 and 35A may include, for example, a first image sensor 35 and a second image sensor 35A spaced apart in a first direction X.

[0025] In the first lens module 210, the first-first lens group 212 has three or four lenses stacked from the object side toward the sensor, and the second-first lens group 214 has three to five lenses stacked from the object side toward the sensor. The first lens module 210 may include six to nine lenses, and may be composed of solid lenses or may include at least one liquid lens between the solid lenses. The liquid lens is disposed in at least one or all of the plurality of second lens groups. Such a liquid lens has a cavity containing a conductive liquid and a non-conductive liquid therein, and the interface between the two liquids is controlled to be concave, flat, or convex depending on the applied power control.

[0026] In the second lens module 230, the first-second lens group 232 has three or four lenses stacked from the object side toward the sensor, and the second-second lens group 234 has three to five lenses stacked from the object side toward the sensor. The second lens module 230 may include six to nine lenses, and may be composed of solid lenses or at least one liquid lens disposed between the solid lenses. Here, in the driving mode, the maximum distance between the two most distant lenses of the first holder 11 and the second holder 21 facing each other may be 4 mm or more, for example, in the range of 4 mm to 9 mm. Here, this maximum distance is a mode in which the first lens groups 212 and 232 of the first and second lens modules 210 and 230 are moved (popped up) from the second lens groups 214 and 234 in the optical axis direction, and the distance between the first holder 11 and the second holder 21 is the maximum distance.

[0027] 2 and 3, the first holder 11 and the second holder 21 of the lens modules 210, 230 are separated vertically in the driving mode, and the first holder 11 and the second holder 21 are separated horizontally in the non-driving mode. Therefore, in the driving mode, the distance between two adjacent lenses is optimized, and the first holder 11 having the first lens groups 212, 232 is moved, and the first lens groups 212, 232 are aligned with the optical axes of the second lens groups 214, 234 in a pop-up state.

[0028] In the driving mode, the 1-1st lens group 212 and the 2-1st lens group 214 of the first lens module 210 may vertically overlap the first image sensor 35. The 1-2nd lens group and the 2-2nd lens group 234 of the second lens module 230 may vertically overlap the second image sensor 35A. In the non-driving mode, the first holder 11 may vertically overlap the first and second image sensors 35 and 35A, and the second holder 21 may not vertically overlap the first and second image sensors 35 and 35A. Here, in the first example, the printed circuit board 30 is separated from the second holder 21, and only the second holder 21 can move horizontally. The first and second image sensors 35 and 35A are aligned with the optical axes of the first lens groups 212 and 232 before and after movement. In the first example, the fixed printed circuit board 30 is advantageous in terms of structure and space. In another second example, the printed circuit board 30 is connected to the second holder 21, and the printed circuit board 30 and the second holder 21 can move together, and the first and second image sensors 35 and 35A are positioned in a state aligned with the optical axes of the second lens groups 214 and 234 before or after movement. When the printed circuit board 30 and the second holder 21 move together as in the second example, the number of cases where the optical axes need to be considered is reduced, improving optical performance.

[0029] The first image sensor 35 may convert light incident through the first lens module 210 into an electrical signal. The second image sensor 35A may convert light incident through the second lens module 230 into an electrical signal. The image sensors 35 and 35A may be any one of a charge coupled device (CCD), a complementary metal oxide semiconductor (CMOS), a CPD, and a CID. One of the image sensors 35 and 35A may be a color (RGB) sensor, and the other may be a monochrome sensor.

[0030] The first and second image sensors 35 and 35A may be disposed on a single printed circuit board 31. The ratio of the long side length to the short side length of the first and second image sensors 35 and 35A may be 4:3 or 16:9. The printed circuit board 31 may include an FPCB. An optical filter is disposed on the image sensors 35 and 35A. A first optical filter (not shown) is disposed on the first image sensor 35 and is disposed inside the second holder 21. The first optical filter is disposed between the first lens group 214 of the second holder 21 and the first image sensor 35. The first optical filter may be an infrared filter and may block light in the infrared region from entering the first image sensor 35. A second optical filter (not shown) is disposed on the second image sensor 35A and is disposed inside the second holder 21. The second optical filter is disposed between the second-second lens group 234 of the second holder 21 and the second image sensor 35A. The second optical filter may be an infrared filter and may block light in the infrared region from entering the second image sensor 35A. The first and second optical filters may be formed by coating an infrared blocking coating material on a flat optical filter, such as a cover glass for protecting the imaging surface. The first and second optical filters may be infrared absorbing filters or infrared reflective filters.

[0031] The lenses of the first lens module 210 and the second lens module 230 may have different F numbers. The first and second lens modules 210 and 230 may generate images with different brightness levels or image quality. For example, one of the first and second lens modules 210 and 230 may be a wide-angle or telephoto lens module, and the other may be a main or general lens module. The wide-angle lens module can capture a wider range of subjects than the main lens module. The telephoto lens module can capture subjects at a longer distance than the standard lens module. One of the first and second lens modules 210 and 230 may be an ultra-wide-angle lens module. The ultra-wide-angle lens module has a wider angle of view than the wide-angle lens module. For example, the wide-angle lens module may have an angle of view of 45 degrees or more or between 45 degrees and 90 degrees, and the ultra-wide-angle lens module may have an angle of view of 120 degrees or more. By incorporating lens modules with various functions, user convenience and the quality of captured images can be improved. The first lens module 210 may have a focal length of 3 mm or more, for example, in the range of 3 mm to 10 mm. The second lens module 230 may have a focal length greater than that of the first lens module 210, for example, in the range of 10 mm to 14 mm, and may have a focal length of 10 mm or more. As another example, the first image sensor 35 and the second image sensor 35A may have different sizes.

[0032] As shown in Fig. 2, in the driving mode, the first holder 11 and the second holder 21 may overlap the image sensors 35 and 35A in the vertical direction. As shown in Fig. 3, when switching to the non-driving mode, the second holder 21 moves in the horizontal direction M1, and the first holder 11 moves in the sensor direction M2. Here, when switching from the driving mode to the non-driving mode, the first holder 11 moves from a first region R1 exposed to the outside of the terminal case to a third region R3, and the second holder 21 moves to a second region R2 horizontally spaced apart from the third region R3. As a result, the first and second holders 11 and 21 overlap vertically in the driving mode and horizontally in the non-driving mode, thereby reducing the height of the camera module. The thickness of the first and second holders 11 and 21 on the printed circuit board 31 may be 5 mm or less before popping up, and the overall thickness of the first holder 11 after popping up may be in the range of 10 mm ± 1 mm. The difference in height of the first holder 11 before and after driving may be approximately half the thickness of the first holder 11. This pop-up thickness increases the overall length (TTL) of the camera module, thereby improving optical performance. The lenses of the first and second lens groups may be distinguished based on the optical system having the longest length among the lens modules, for example, the telephoto lens module. Alternatively, the lenses of the first and second lens groups may be distinguished based on the TTL of the optical system with the largest image sensor. The camera device may include a plurality of driving units and a control unit for driving the first and second holders 11 and 21, respectively. The plurality of driving means may include a first driving means (not shown) for driving the first holder 11 in a vertical direction and a second driving means (not shown) for driving the second holder 21 in a horizontal direction. Each of the first and second driving means may include at least one of a piezoelectric member, an actuator, or a stepping motor.As another example, the driving means may include a plurality of leaf springs, and vertical elasticity may be provided through the leaf springs. As another example, a Hall sensor may be disposed in at least one of the first and second holders 11 and 21, and the Hall sensor may detect vertical movement.

[0033] 4A and 4B, the first driving means may include a first guide shaft 41, a first movable part 43 connected to the first guide shaft 41 and the first holder 11, and a first driving part (not shown) that moves the first movable part 43 through the first guide shaft 41. The second driving means may include a first guide shaft 51, a second movable part 53 connected to the second guide shaft 51 and the second holder 21, and a second driving part (not shown) that moves the second movable part 53 through the second guide shaft 51. The first and second driving parts may be piezoelectric elements or stators such as coils. The piezoelectric elements are stretched or contracted when a voltage is applied, transmitting movement to the first and second guide shafts 41 and 51. The first guide shaft 41 extends vertically along the first and third regions R1 and R3, is connected to the outside of the first holder 11, and may be arranged in one or more units. The second guide shaft 51 may extend horizontally along the second and third regions R2 and R3, be connected to the outside of the second holder 21, and may be arranged in one or more. The first guide shaft 41 and the second guide shaft 51 are arranged in directions perpendicular to each other. The first movable part 43 may move vertically along the first guide shaft 41 together with the first holder 11. The second connecting part 53 may move horizontally along the second guide shaft 51 together with the second holder 21. The first holder 11 and the second holder 21 move simultaneously. The moving distance of the first holder 11 may be shorter than the moving distance of the second holder 21.

[0034] 5 to 7 show another example of the first driving means. The first driving means may include a first guide shaft 41, an intermediate guide shaft 42, a first movable portion 43A, and an intermediate connecting portion 43B. The first guide shaft 41 and the intermediate guide shaft 42 can move the first holder 11 up or down in multiple stages. By moving the first holder 11 in multiple stages in this manner, the fixed first guide shaft 41 does not need to be high. Specifically, as shown in FIGS. 5 to 7, the intermediate guide shaft 42 is disposed inside the first guide shaft 41, i.e., in an area adjacent to the first holder 11. The height of the upper end of the intermediate guide shaft 42 can be moved from a position higher than the upper end of the first guide shaft 41 to a position lower than the upper end of the first guide shaft 41.

[0035] As shown in Fig. 5, when the intermediate guide shaft 42 is driven by the third driving unit, the first connecting part 43A and the first holder 11 are moved downward. Then, when the first holder 11 is placed above the third region R3 as shown in Fig. 6, the first guide shaft 41 is driven by the first driving unit, and the intermediate connecting part 43B connected to the first guide shaft 41 moves the first holder 11 toward the bottom of the third region R3 or toward the sensor. As a result, the first guide shaft 41 and the intermediate connecting part 43B can position the first holder 11 closest to the image sensors 35, 35A as shown in Fig. 7. The third driving unit may include a piezoelectric element.

[0036] 8 to 13 are diagrams showing a camera module according to a second embodiment, and detailed descriptions of the same components as those in the first embodiment will be omitted.

[0037] 8 to 11, the camera module may include a triple lens module. The camera module may include first to third lens modules 210, 230, and 250 aligned with first and second holders 11 and 21 on different optical axes. The camera module may include first to third image sensors 36, 37, and 38 arranged on a single printed circuit board 450. The first holder 11 may include three or more first lens groups 212, 232, and 252. The second holder 21 may include three or more second lens groups 214, 234, and 254. The first holder 11 may include a first-first lens group 212, a second-second lens group 232, and a third lens group 252, and the second holder 21 may include a second-first lens group 214, a second-second lens group 234, and a third lens group 254. The first lens module 210 may be vertically overlapped with the first image sensor 36, the second lens module 230 may be vertically overlapped with the second image sensor 37, and the third lens module 250 may be vertically overlapped with the third image sensor 38. A filter (not shown) may be disposed on each of the first, second, and third image sensors 36, 37, and 38. The first, second, and third image sensors 36, 37, and 38 may be disposed spaced apart from each other on a single printed circuit board 31. The first lens module 210 may be a wide-angle lens module, the second lens module 230 may be a main or general lens module, and the third lens module 250 may be a telephoto lens module. Here, the Fno of the telephoto lens module may be 1.8 or less. Any one of the first, second, and third lens modules 210, 230, and 250 may be implemented as an ultra-wide-angle lens module. The ultra-wide-angle lens module is provided with a wider angle of view than the wide-angle lens module, for example, the angle of view of the wide-angle lens module may be 45 degrees or more or in the range of 45 degrees to 90 degrees, and the angle of view of the ultra-wide-angle lens module may be 120 degrees or more.The housing 100 is equipped with lens modules with various functions, thereby improving user convenience and the quality of captured images.

[0038] The first lens module 210 may have a focal length of 3 mm or more, for example, in the range of 3 mm to 10 mm. The second lens module 230 may have a focal length greater than that of the first lens module 210, for example, in the range of 10 mm to 14 mm. The third lens module 250 may have a focal length of 10 mm or more, for example, in the range of 10 mm to 14 mm. The first to third lens modules 210, 230, and 250 may have different focal lengths or the sizes of the first to third image sensors 36, 37, and 38 may be adjusted to improve image quality in a desired shooting mode. In this case, the spacing between the lens groups of the telephoto lens module having the longest focal length among the lens modules may be used as a reference, and then the spacing between the lens groups of the other lens modules may be set. The first and second holders 11 and 21 may have a length in one direction X that is greater than or equal to the length in the other direction. For example, as shown in FIGS. 22 to 24, a camera module is disposed at the bottom of a case 501 of a terminal, and a first holder having a first lens group is protruded in a driving mode.

[0039] The first lens groups 212, 232, and 252 arranged on the first holder 11 are spaced apart at a first interval. The second lens groups 214, 234, and 254 arranged on the second holder 21 are spaced apart at a first interval. The first lens groups 212, 232, and 252 may include a 1-1 lens group 212, a 1-2 lens group 232, and a 1-3 lens group 252 spaced apart in a first direction. The second lens groups 214, 234, and 254 may include a 2-1 lens group 214, a 2-2 lens group 234, and a 2-3 lens group 254 spaced apart in the first direction. Here, the first lens module 210 may include the 1-1 lens group 212 and the 2-1 lens group 214 aligned along a first optical axis. The second lens module 230 may include a first-second lens group 232 and a second-second lens group 234 aligned on a second optical axis, and the third lens module 250 may include a first-third lens group 252 and a second-third lens group 254 aligned on a third optical axis.

[0040] In the first lens module 210, the first-first lens group 212 has three or four lenses stacked from the object side toward the sensor, and the second-first lens group 214 has three to five lenses stacked from the object side toward the sensor. The first lens module 210 may include six to nine lenses and may be made of solid lenses or may include at least one liquid lens between the solid lenses, and the liquid lens is disposed in a second holder in consideration of power supply. In the second lens module 230, the first-second lens group 232 has three or four lenses stacked from the object side toward the sensor, and the second-second lens group 234 has three to five lenses stacked from the object side toward the sensor. The second lens module 230 may include six to nine lenses and may be made of solid lenses or may include at least one liquid lens between the solid lenses. In the third lens module 250, the first to third lens group 252 has two or three lenses stacked from the object side toward the sensor, and the second to third lens group 254 has three to five lenses stacked from the object side toward the sensor. The third lens module 250 may include five to eight lenses, and may be made of solid lenses or at least one liquid lens may be disposed between the solid lenses.

[0041] 9 to 11, the first holder 11 is driven by a first driving means, which may include a first guide shaft 121 disposed outside the first holder 11, a first connector 123 connecting the first guide shaft 121 and the first holder 11, and a first driving unit 125 for driving the first guide shaft 121. The second holder 21 is driven by a second driving means, which may include a second guide shaft 151 disposed outside the moving distance of the second holder 21, a second connector 153 connecting the second holder 21 and the second guide shaft 151, and a first driving unit 155 for driving the second guide shaft 151. The first and second driving units 125 and 155 may be piezoelectric elements or, as another example, may be embodied as an actuator or a stepping motor. One or more first driving means may be disposed to stably move the first holder 11 up or down vertically. One or more second driving means are provided, and can move the second holder 21 up or down in the horizontal direction.

[0042] When the state shown in FIG. 10 is switched to the state shown in FIG. 9, the driving mode is reached. The first holder 11 is moved up in the vertical direction M2 by the first driving means 121, 123, and 125, and the second holder 21 is moved above the sensor in the horizontal direction M1 by the second driving means 151, 153, and 155. When the state shown in FIG. 9 is switched to the state shown in FIG. 10, the non-driving mode is reached. The first holder 11 is moved down in the vertical direction M2 by the first driving means 121, 123, and 125, and the second holder 21 is moved away from the sensor in the horizontal direction M1 by the second driving means 151, 153, and 155. As a result, the moving distance G1 of the first holder 11 is 4 mm or more. Here, in the driving mode, the maximum distance between the two lenses furthest apart between the lenses of the first holder 11 and the lenses of the second holder 21 may be 4 mm or more, for example, in the range of 4 mm to 9 mm. Here, the maximum distance is a mode in which the first lens groups 212, 232, and 252 of the first to third lens modules 210, 230, and 250 are moved (popped up) higher than the surface of the case 501 in the optical axis direction from the second lens groups 214, 234, and 254, and the distance between the first holder 11 and the second holder 21 is the maximum distance. Here, the movement distance G1 of the first holder 11 may be approximately half the thickness of the first holder 11. The interval between two adjacent optical axes among the first to third optical axes of the first to third lens modules 210, 230, and 250 may be constant or one of them may increase, but is not limited thereto. As another example, four lens modules may be included inside the first and second holders 11 and 21. The four lens modules may be first to fourth lens modules, and may include the first to third lens modules 210, 230, and 250 disclosed above and a ToF (Time of Flight) lens module (e.g., 272 in FIGS. 22 to 24). Such a TOF lens module and image sensor can provide depth data along with two-dimensional data. Alternatively, a TOF lens module can be applied as the third lens module 250.When such a TOF lens module is applied, the camera device may include an infrared element.

[0043] 8 to 11, an example has been described in which the second holder 21 is moved in a direction perpendicular to the direction in which the plurality of lens modules 210, 230, and 250 are arranged, i.e., in the direction of the short side of the second holder 21. As shown in Figures 12 and 13, an example has been described in which the second holder 21 is moved in the same direction as the direction in which the plurality of lens modules 210, 230, and 250 are arranged, i.e., in the direction of the long side of the second holder 21. Such movement of the second holder 21 can be used in a camera structure of a terminal as shown in Figures 23 and 24.

[0044] 14A and 14B, the thickness T2 of the camera module, i.e., the height from the printed circuit board to the top of the first holder 11 (i.e., T2), may be greater than the height T1 of the mobile terminal's storage space. Thus, the first holder 11 can move up or down a distance G1, which is calculated by the difference between the two heights, T2 - T1. Here, in the driving mode, the first holder 11 protrudes the distance G1 outside the case 501, and in the non-driving mode, the first holder 11 can be lowered by the distance G1. The first-1st lens group 213 of the first holder 11 and the second-1st lens group 215 of the second holder 21 are aligned with the first optical axis P1 and operated in the photographing mode. The first-2nd lens group 233 of the first holder 11 and the second-2nd lens group 235 of the second holder 21 are aligned with the second optical axis P2 and operated in the photographing mode. Here, filters F1 and F2 are disposed between the second holder 21 and the image sensors 36 and 37, respectively. In this camera module, the lenses of the 1-1st lens group 213 of the first lens module of the first holder 11 and the lenses of the 1-2nd lens group 215 of the first lens module of the second holder 21 are aligned from the object side toward the sensor. The diaphragm may be located on the object-side edge of the first or second lens of each of the first lens groups, and may be disposed on the object-side edge of the first or second lens depending on the lens module. Here, as shown in FIGS. 1 and 14, when the first lens module 210 is a main lens module, the 1-1st lens groups 212 and 213 may be stacked with two or three lenses and may have positive refractive power as a whole. For example, in the first lens module 210, the object-side lens (the lens closest to the object) and the last sensor-side lens (the lens closest to the sensor) of the 1-1st lens groups 212 and 213 may have positive refractive power. When the 1-1st lens group 212, 213 consists of two lenses, the focal length of the object-side lens may be 0.7 times or more, for example, between 0.7 and 1.5 times, the overall focal length of the first lens group.When the first-first lens group 212, 213 is composed of three stacked lenses, the refractive power of the lenses in the first-first lens group 212, 213 up to the sensor side (the sensor side of the last lens) separated from the second-first lens group 214, 215 may have positive refractive power, and the focal length of the object-side sensor-side lens may be 1.5 times or more, for example, in the range of 1.5 to 3 times, the overall focal length of the first-first lens group 212, 213.

[0045] The second-first lens group 214, 215 of the first lens module 210 may be composed of three or four lenses and may have a negative overall refractive power, with the object-side lens and the final sensor-side lens of the second-first lens group 215 having negative refractive power. The focal length from the second lens group 214, 215 to the sensor-side lens may be 0.15 times or more, for example, between 0.15 and 1.5 times, the focal length of the entire second-first lens group. The object-side lens in the second-first lens group 214, 215 of the first lens module 210 may have a sag (sagittal height) value of 0.01 mm or less up to a height of 25% of the effective diameter of the lens to reduce sensitivity to decentering in the horizontal axis direction. The total TTL (distance from the object-side lens to the sensor) of the first lens module 210 having the first-first lens groups 212 and 213 and the second-first lens groups 214 and 215 may be in the range of 90% to 100% of the thickness of the terminal to which the optical system is attached. The thickness of the first-first lens groups 212 and 213 or the first holder 11 disclosed above may be 40% or less of the total optical system TTL, for example, in the range of 30% to 40%. The thickness of the first-first lens groups 212 and 213 or the first holder 11 is determined taking into consideration the thickness of the mobile terminal or the camera storage space. The thickness or height of the second-first lens groups 214 and 215 or the second holder 21 is provided to be 30% or more of the total optical system TTL, for example, in the range of 30% to 60%. In the driving mode, the distance between the first-first lens group 212, 213 or the first holder 11 and the second-first lens group 214, 215 or the second holder 21 may be 20% or less of the entire optical system, for example, in the range of 10% to 20%.

[0046] When the second lens module 230 is a telephoto lens module, the first-second lens groups 232 and 233 may be composed of three lenses, have a total positive refractive power, and the object-side lens and the sensor-side lens may have a positive refractive power. The focal length of the object-side lens of the first-second lens groups 232 and 233 may be 0.6 times or more, for example, between 0.6 and 1.5 times, the total focal length of the first-second lens groups 232 and 233. Here, apertures are disposed at the object-side edges of the first and second object-side lenses of the first-second lens groups 232 and 233. The second-second lens groups 234 and 235 of the second lens module 230 may be composed of two lenses, have a total negative refractive power, and the object-side lens and the sensor-side lens may have a negative refractive power. The focal length of the sensor-side lens in the second-second lens group 234, 235 may be 1.5 times or more, for example, in the range of 1.5 to 2.5 times, the overall focal length of the second-second lens group 234, 235. The object-side lens in the second-second lens group 234, 235 may be configured to have a sag (sagittal height) value of 0.01 mm or less up to 25% of the effective diameter of the lens to reduce sensitivity due to decentering in the horizontal axis direction.

[0047] The total TTL (length from the first lens surface to the sensor) of the second lens module 230 may be approximately 90 to 100% of the thickness of the terminal to which the optical system is attached, and the thickness of the holder having the first and second lens groups 232 and 233 may be divided by a ratio to the total optical system length (TTL). For example, the thickness of the first holder 11 having the first and second lens groups 232 and 233 may be 40% or less of the total optical system TTL, for example, in the range of 30 to 40%. The thickness of the second holder 21 having the second and second lens groups 234 and 235 may be 60% or less of the total optical system TTL, for example, in the range of 50 to 60%. The thickness of the first and second lens groups 232 and 233 or the first holder 11 is determined taking into account the thickness of the mobile terminal or the space required to accommodate the camera. The distance between the first-second lens group 232, 233 or the first holder 11 and the second-second lens group 234, 235 or the second holder 21 may be 20% or less of the entire optical system, for example, in the range of 10% to 20%. As shown in Figures 22 to 24, the first lens groups 212, 232, 252 of the multiple lens modules arranged in the first holder 11 are shown in a vertically raised state, and when not driven, are lowered to the same position as the surface of the case.

[0048] Fig. 15 is an exploded perspective view of a camera module according to a third embodiment of the invention, Fig. 16 is a perspective view showing an example of a drive unit of the camera module in Fig. 15, Fig. 17 is an example of a plan view showing the first lens group in the camera module of Fig. 15, Fig. 18(A) and (B) are example side cross-sectional views showing the camera module according to the third embodiment before driving or in a driven state, Fig. 19 is an example of a plan view of a camera module having three first lens groups as another example of Fig. 15, Fig. 20 is a side cross-sectional view of the camera module of Fig. 19, with (A) and (B) being cross-sectional views showing the camera module before driving or in a driven state. In the description of the third embodiment, configurations identical to those of the first and second embodiments can be selectively included in the description of the first and second embodiments.

[0049] 15 to 18, the camera module may include a housing 100 containing a first holder 110 having a plurality of first lens groups 212, 232 and a second holder 120 having a plurality of second lens groups 214, 234, and an image sensor module 400 that converts light incident through the first lens groups 212, 232 and the second lens groups 214, 234 into an electrical signal. The camera module may include a module having a plurality of lens modules 210, 230 and a plurality of image sensors 410, 430. The first holder 110 may be coupled to the inside or top of the second holder 120. The first holder 110 and the second holder 120 are arranged to be stacked vertically.

[0050] As shown in FIG. 16 , the second holder 120 has an accommodating space 115, and the first holder 110 is inserted into the accommodating space 115 of the second holder 120. The second holder 120 does not need to be physically connected to the first holder 110. The inner lens groups 214 and 234 in the accommodating space 115 are connected by a support 122. The vertical thickness of the first holder 110 may be the same as the depth of the accommodating space 115 of the second holder 120, for example, 4 mm or less. Here, the accommodating space 115 may include a structure having a sidewall facing at least one or a portion of both sides of the first holder 110. That is, the sidewall of the accommodating space 115 may have a minimum height that can guide the first holder 110 when it is moved in the optical axis direction from the second holder 120. As another example, the second holder 120 may have a flat top surface without the accommodating space 115.

[0051] 17, the length D3 of the first holder 110 in the first direction X may be equal to or smaller than the length D0 of the second holder 120 in the first direction X. The length D4 of the first holder 110 in the second direction Y may be equal to or smaller than the length D2 of the second holder 120 in the second direction Y. The length D3 of the first holder 110 in the first direction X may be greater than the length D4 of the second direction Y. The length D0 of the second holder 120 in the first direction X may be greater than the length D2 of the second direction Y. Here, the first direction X may be a direction in which the lens modules 210 and 230 are arranged, and the second direction Y may be a direction perpendicular to the first direction X. The housing 100 may have a rectangular or square shape in top view. For example, as shown in FIG. 22, when the housing 100 is placed in a terminal case 501, the length in the first direction X is longer than the length in the second direction Y. When the housing is disposed in a terminal as shown in Fig. 23, the length in the second direction Y is longer than the length in the first direction X. When the housing is disposed in a terminal as shown in Fig. 24, the lengths in the first direction X and the second direction Y may be the same or different.

[0052] 16 and 17, the housing 100 may include a plurality of lens modules 210 and 230. The plurality of lens modules 210 and 230 may include a first lens module 210 and a second lens module 230 spaced apart in a first direction X. The first lens module 210 may include a first-1 lens group 212 and a second-1 lens group 214 aligned along a first optical axis. The second lens module 230 may include a first-2 lens group 232 and a second-2 lens group 234 aligned along a second optical axis. The first lens groups 212 and 232 arranged in the first holder 110 may be spaced apart by a first distance D1. The second lens groups 214 and 234 arranged in the second holder 120 may be spaced apart by a first distance D1. The plurality of first lens groups 212, 232 may include a 1-1 lens group 212 and a 1-2 lens group 232 spaced apart in a first direction X. The plurality of second lens groups 214, 234 may include a 2-1 lens group 232 and a 2-2 lens group 234 spaced apart in the first direction X. The first and second holders 110, 120 may be made of a non-magnetic material. The first and second holders 110, 120 may be made of a metal or plastic material. If the holder is made of a metal material, it can block EMI (Electro Magnetic Interference), and if the holder is made of a plastic material, it can reduce weight and facilitate coupling with the lenses.

[0053] As shown in FIG. 16 , the image sensor module 240 may include a plurality of image sensors 410 and 430 and a printed circuit board 450 on which the plurality of image sensors 410 and 430 are arranged. The image sensors 410 and 430 may include, for example, a first image sensor 410 and a second image sensor 430 spaced apart in a first direction X. In the first lens module 210, the first-first lens group 212 may have three to four lenses, and the second-first lens group 214 may have three to five lenses. The first lens module 210 may include six to nine lenses, and may be composed of solid lenses or may include at least one liquid lens between the solid lenses. The liquid lens may be arranged in at least one or all of the second lens groups. In the second lens module 230, the first-second lens group 232 may have three or four lenses, and the second-second lens group 234 may have three to five lenses. The second lens module 230 may include six to nine lenses, and may be composed of solid lenses or at least one liquid lens disposed between the solid lenses. In the non-driven mode, the minimum distance between the two closest lenses of the first and second holders 110 and 120 facing each other may be 0.5 mm or less, for example, in the range of 0.1 mm to 0.5 mm. The minimum distance occurs when the first and second lens modules 210 and 230 are not driven or in use, and the distance between the first and second holders 110 and 120 is at its minimum. The maximum distance between the two most distant lenses of the first and second holders 110 and 120 facing each other may be 4 mm or more, for example, in the range of 4 mm to 9 mm. Here, the maximum distance is a mode in which the first lens group 212, 232 of the first and second lens modules 210, 230 is moved (popped up) in the optical axis direction from the second lens group 214, 234, and the distance between the first holder 110 and the second holder 120 is the maximum distance.In this way, the multiple lens modules 210, 230 are separated vertically into the first holder 110 and the second holder 120, and the spacing between two adjacent lenses can be optimized by moving the first holder 110 having the multiple first lens groups 212, 232, and aligning the multiple first lens groups 212, 232 with the first lens groups 214, 234 on the optical axis when the multiple first lens groups 212, 232 are popped up.

[0054] The 1-1st lens group 212 and the 2-1st lens group 214 of the first lens module 210 may overlap the first image sensor 410 in the vertical direction. The 1-2nd lens group and the 2-2nd lens group 234 of the second lens module 230 may overlap the second image sensor 430 in the vertical direction. The first image sensor 410 may convert light incident through the first lens module 210 into an electrical signal. The second image sensor 430 may convert light incident through the second lens module 230 into an electrical signal. One of the image sensors 410 and 430 may be a color (RGB) sensor, and the other may be a monochrome sensor. An optical filter is disposed on the image sensors 410 and 430.

[0055] The first and second lens modules 210 and 230 may generate images having differences in brightness or image quality. For example, one of the first and second lens modules 210 and 230 may be a wide-angle or telephoto lens module, and the other may be a main or general lens module. One of the first and second lens modules 210 and 230 may be a super wide-angle lens module. The housing 100 may be equipped with lens modules with various functions to improve user convenience and the quality of captured images.

[0056] The first lens module 210 may have a focal length of 3 mm or more, for example, in the range of 3 mm to 10 mm. The second lens module 230 may have a focal length greater than that of the first lens module 210, for example, in the range of 10 mm to 14 mm. As another example, the first image sensor 410 and the second image sensor 430 may have different sizes. The second holder 120 may have an accommodating space 115 at its top or inside, into which the first holder 110 is inserted or coupled. The first holder 110 is disposed within the accommodating space 115 of the second holder 120, and the first holder 110 is moved up or down vertically relative to the second holder 120 to its original position by a driving unit.

[0057] 15 and 16, a stator 363 is disposed on at least one or both sides of the outer surface of the first holder 110. The stator 363 is disposed with a long length in the direction in which the lens modules 210 and 230 are arranged. The stator 363 is disposed with a long length in the first direction X. The stator 363 extends to the outside of the first-first lens group 212 and the first-second lens group 232. A mover 361 is disposed on the inner or outer surface of the second holder 120 facing the stator 363. The mover 361 is disposed at a position where it can face one or more stators 363. The mover 361 may be a magnet, and the stator 363 may include a coil. The driving unit 360 may include the mover 361 and the stator 363. Here, the second holder 120 may have a receiving groove for mounting the mover 361 or a plurality of holes 352 for transmitting a magnetic field.

[0058] The first and second image sensors 410 and 430 are electrically connected to a printed circuit board 450. The printed circuit board 450 can supply power to the stator 363. The printed circuit board 450 can include a control unit (not shown) for controlling the driving of the first holder 110. The stator 363 or a coil can move the first holder 110 vertically up or down through electromagnetic interaction with the magnet. The magnet and / or coil can be used for AF driving and / or OIS driving. As another example, the driving unit can include a piezoelectric element and a shaft. The piezoelectric element is disposed in the second holder 120, and the shaft is an axis that guides the movement of the first holder 110 and can guide the vertical up or down movement by the piezoelectric element. Accordingly, the driving member can include at least one of a piezoelectric element, an actuator, or a stepping motor, but is not limited thereto. As another example, the driving unit can include a plurality of leaf springs, and vertical elasticity can be provided through the leaf springs. As another example, a hall sensor may be disposed in at least one of the first and second holders 110 and 120, and the hall sensor may detect vertical movement.

[0059] As shown in FIG. 18A, before the camera module is driven or when the camera device is not in use, the first holder 110 is disposed on the second holder 120. The first holder 110 may be closely attached to the top surface of the second holder 120 or may be attached with a gap of 1 mm or less. The top surface of the first holder 110 is disposed on the same horizontal plane as the top surface of the second holder 120. As shown in FIG. 18B, when the camera module is driven or the camera device is in use mode, if positive polarity power is supplied to the stator 363 of the driving unit, the mover 361 of the first holder 110 protrudes upward by a predetermined distance G1 from the surface of the case 501. At this time, the first holder 110 protrudes a distance G1 of 1 mm or more, for example, in the range of 3 mm to 4 mm, from the top surface of the second holder 120. For example, the first holder 110 protrudes 3 mm or more, for example, in the range of 3 mm to 7 mm, from the surface of the mobile terminal case. In this case, the separation distance G2 between the first holder 110 and the second holder 120 may be 3 mm or more, for example, in the range of 3 mm to 7 mm. The thickness of the first and second holders 110 and 120 on the printed circuit board 450 before popping up may be 7 mm or less, and the thickness of the first holder 110 after popping up may be in the range of 10 mm ± 1 mm. This thickness in the popped-up state increases the total length (TTL) of the camera module, thereby improving optical performance. Furthermore, by separating the adjacent upper and lower lens groups by the distance G2, a long flange back length (FBL) can be provided. Thereafter, when the power supplied to the stator 363 is cut off or when power of the opposite polarity is supplied to the stator 363, the first holder 110 returns to its original position. The driver for controlling the movement of the first holder 110 is controlled by the controller.

[0060] 19 and 20 are views showing a camera module as another example of Fig. 17 and Fig. 18. In the description of Fig. 19 and Fig. 20, the same configuration as that disclosed above will refer to the embodiment disclosed above.

[0061] 19 and 20, the camera module may include a triple lens module. The housing 100 includes first and second holders 110A and 120 and may include first, second, and third lens modules 210, 230, and 250 aligned on different optical axes. The camera module may include first, second, and third image sensors 410, 430, and 440 arranged on a single printed circuit board 450. The first holder 110A may include three or more first lens groups 212, 232, and 252. The second holder 120 may include three or more second lens groups 214, 234, and 254. The first holder 110A includes the first-1st lens group 212, the second-2nd lens group 232, and the third lens group 252, and the second holder 120 includes the second-1st lens group 214, the second-2nd lens group 234, and the third lens group 254. The first lens module 210 may be vertically overlapped with the first image sensor 410, the second lens module 230 may be vertically overlapped with the second image sensor 430, and the third lens module 250 may be vertically overlapped with the third image sensor 440. A filter may be disposed on each of the first, second, and third image sensors 410, 430, and 440. The first lens module 210 may be a wide-angle lens module, the second lens module 230 may be a main or general lens module, and the third lens module 250 may be a telephoto lens module. Here, the Fno of the telephoto lens module may be 1.8 or less. Any one of the first, second, and third lens modules 210, 230, and 250 may be implemented as an ultra-wide-angle lens module. The ultra-wide-angle lens module is provided with a wider angle of view than the wide-angle lens module, and for example, the wide-angle lens module may have an angle of view of 45 degrees or more or in the range of 45 degrees to 90 degrees, while the ultra-wide-angle lens module may have an angle of view of 120 degrees or more. Lens modules with various functions can be mounted in the housing 100 to improve user convenience and the quality of captured images.The first lens module 210 may have a focal length of 3 mm or more, for example, in the range of 3 mm to 10 mm. The second lens module 230 may have a focal length greater than that of the first lens module 210, for example, in the range of 10 mm to 14 mm. The third lens module 250 may have a focal length of 10 mm or more, for example, in the range of 10 mm to 14 mm. The first to third lens modules 210, 230, and 250 may have different focal lengths or the sizes of the first to third image sensors 410, 430, and 440 may be adjusted to improve image quality in a desired shooting mode. In this case, the telephoto lens module with the longest focal length among the lens modules may be used as a reference, and then the other lens modules may be set.

[0062] The length D3 of the first holder 110A in the first direction X may be equal to or smaller than the length D2 of the second holder 120 in the first direction. The length D4 of the first holder 110A in the second direction Y may be equal to or smaller than the length D2 of the second holder 120 in the second direction Y. The length D3 of the first holder 110A in the first direction X may be greater than the length D2 of the second direction Y. The length D2 of the second holder 120 in the first direction X may be greater than the length D2 of the second direction Y. Here, the first direction may be a direction in which the lens modules are arranged, and the second direction may be a direction perpendicular to the first direction. The housing 100 may have a rectangular or square shape in top view. If the housing 100 is square, the shape of the straight line connecting the first to third lens modules 210, 230, and 250 may be triangular. For example, the lens modules may be arranged as shown in FIGS. 22 to 24.

[0063] 19 and 20, the first lens groups 212, 232, and 252 arranged in the first holder 110A are spaced apart by a first distance D1. The second lens groups 214, 234, and 254 arranged in the second holder 120 are spaced apart by a first distance D1. The first lens groups 212, 232, and 252 may include a first lens group 212, a second lens group 232, and a third lens group 252 spaced apart in a first direction. The second lens groups 214, 234, and 254 may include a second lens group 214, a second lens group 234, and a third lens group 254 spaced apart in the first direction. Here, the housing 100 may include first to third lens modules 210, 230, and 250 arranged in one direction. The first to third lens modules 210, 230, and 250 are spaced apart in a first direction X or a second direction Y. The first lens module 210 may include a first-1 lens group 212 and a second-1 lens group 214 aligned along a first optical axis. The second lens module 230 may include a first-2 lens group 232 and a second-2 lens group 234 aligned along a second optical axis. The third lens module 250 may include a first-3 lens group 252 and a second-3 lens group 254 aligned along a third optical axis. In the first lens module 210, the first-1 lens group 212 may have three or four lenses, and the second-1 lens group 214 may have three to five lenses. The first lens module 210 may include six to nine lenses and may be made of solid lenses or may include at least one liquid lens between the solid lenses. In the second lens module 230, the first-second lens group 232 may have three or four lenses, and the second-second lens group 234 may have three to five lenses. The second lens module 230 may include six to nine lenses, and may be made of solid lenses or may have at least one liquid lens disposed between the solid lenses.

[0064] In the third lens module 250, the first-third lens group 252 may have two or three lenses, and the second-third lens group 254 may have three to five lenses. The third lens module 250 may include five to eight lenses, which may be solid lenses or at least one liquid lens disposed between the solid lenses. The first holder 110A is driven by a driving unit, and the first-first lens group 212, the first-second lens group 232, and the first-third lens group of the first holder 110A may move from above the second holder 120 in the optical axis direction by driving the driving unit. Here, in the non-driving mode, the minimum distance between the two most adjacent lenses between the lenses of the first holder 110A and the lenses of the second holder 120 may be 0.5 mm or less, for example, in the range of 0.1 mm to 0.5 mm. Here, the minimum distance refers to a state in which the first to third lens modules 210, 230, and 250 are not driven or are not in use, and the distance between the first holder 110A and the second holder 120 is at its minimum. Here, the maximum distance between the two most distant lenses between the lenses of the first holder 110A and the lenses of the second holder 120 may be 4 mm or more, for example, in the range of 4 mm to 9 mm. Here, the maximum distance refers to a state in which the first lens groups 212, 232, and 252 of the first to third lens modules 210, 230, and 250 are moved (popped up) higher than the surface of the case 501 in the optical axis direction from the second lens groups 214, 234, and 254, and the distance between the first holder 110A and the second holder 120 is at its maximum.

[0065] The interval between two adjacent optical axes among the first to third optical axes of the first to third lens modules 210, 230, and 250 may be constant or one of them may be increased, but is not limited thereto. As another example, the housing 100 may include four lens modules inside the first and second holders 110A and 120. The four lens modules may be first to fourth lens modules and may include the first to third lens modules 210, 230, and 250 disclosed above and a ToF (Time of Flight) lens module (e.g., 272 in FIG. 8). Such a TOF lens module and an image sensor can provide depth data along with two-dimensional data. Alternatively, a TOF lens module may be used as the third lens module 250. When such a TOF lens module is used, the camera device may include an infrared element.

[0066] 21A and 21B are side cross-sectional views illustrating an example of a camera module according to a fourth embodiment. While FIG. 21 illustrates two lens modules, the camera module may include, but is not limited to, three or four lens modules. As shown in FIGS. 21A and 21B, the housing may include first and second holders 110 and 120 stacked vertically. The housing may include a plurality of lens modules 210 and 230, for example, at least two lens modules. Image sensors 410 and 430 and filters (not shown) disposed on a printed circuit board 450 are disposed below each of the lens modules 210 and 230.

[0067] The first lens module 210 may include a first lens group 212 disposed in the first holder 11 and a second lens group 232 disposed in the second holder 21. The second lens module 230 may include a second lens group 232 disposed in the first holder 11 and a second lens group 234 disposed in the second holder 21. Each of the first lens group 212 and the second lens group 214 of the first lens module 230 may include two or more lenses. Each of the first lens group 232 and the second lens group 234 of the second lens module 230 may include two or more lenses. The first holder 110 may be moved in the vertical direction or the optical axis direction by a driving unit, and at this time, the first lens group 212 and the first lens group 232 of the first and second lens modules 210 and 230 are moved. The first holder 110 is driven by a driving unit. The driving means may include a guide shaft 41, a movable part 43 connected to the guide shaft 41 and the first holder 11, and a driving part 40 for moving the movable part 43 through the guide shaft 41. The guide shaft 41 guides the first holder 11 to move in the vertical direction or the optical axis direction, and one or more guide shafts 41 may be disposed outside the first holder 11. The driving part 40 may include a piezoelectric element and expands or contracts when a voltage is applied. When the driving part 40 expands, the guide shaft 41 and the movable part 43 move the first holder 11 up in the vertical direction, and when the driving part 40 contracts, the guide shaft 41 and the movable part 43 move the first holder 11 down in the vertical direction. Here, the guide shaft 41 is provided so as not to be exposed to the outside of the terminal case.

[0068] The camera modules according to the first to fourth embodiments are coupled to the front or rear of a mobile terminal. As shown in FIG. 22, a plurality of first lens groups 212, 232, and 252 are arranged in a first direction and simultaneously move up or down vertically. As shown in FIG. 23, a plurality of first lens groups 212, 232, and 252 are arranged in a second direction and simultaneously move up or down vertically. As shown in FIG. 24, a plurality of first lens groups 212, 232, and 252 are arranged in both the first and second directions and simultaneously move up or down vertically. In FIGS. 22 to 24, a TOF lens module 272 or a camera flash module may be further disposed in the first holder 11, but this is not limited thereto. The case 501 of such a mobile terminal may have an opening through which the first holder 11 can protrude. In addition, the second holder disposed below the first holder 11 may be moved horizontally, thereby reducing the overall thickness of the camera module and making it applicable to smartphones with a thickness of 11 mm or less. Therefore, a portion of the first holder 11 protrudes from the outside of the case of a mobile terminal such as a smartphone only when the mobile terminal is in use and does not protrude when the mobile terminal is not in use. This solves the problem of a portion of the lens module of the camera device protruding outside the smartphone when the camera is not in use, making the smartphone more convenient to carry and improving the appearance design. It also protects the surface of the camera module from damage.

[0069] Fig. 25 is an example of a perspective view of a mobile terminal to which a camera module according to a fifth embodiment of the invention is coupled, where (A) shows the camera before use and (B) shows the camera in use. Fig. 26 is a first example of a side cross-sectional view of the camera module of Fig. 25, Fig. 27 is an example of driving the camera module of Fig. 26, Fig. 28 is a second example of a side cross-sectional view of the camera module of Fig. 1, Fig. 29 is an example of driving the camera module of Fig. 28, Fig. 30 is a third example of a side cross-sectional view of the camera module of Fig. 25, Fig. 31 is an example of driving the camera module of Fig. 30, Fig. 32 is a view showing a holder and guide shaft supporting a lens of a camera module according to an embodiment of the invention, and Fig. 33 is another example of a side cross-sectional view of Fig. 32. In the description of the fifth embodiment, the same configuration as that of the first embodiment will be included in the description of the first embodiment.

[0070] 25, a mobile terminal 500 according to an embodiment of the present invention may be a portable electronic device, such as a mobile communication terminal, a smartphone, or a tablet PC, equipped with a camera module 1000. As shown in FIG. 1, the camera module 1000 is equipped in the mobile terminal 500 to capture an image of a subject. The camera module 1000 includes a plurality of lenses, and the optical axes (Z-axes) of the lenses may be perpendicular to the thickness direction (Z-axis direction) of the mobile terminal 500. The thickness direction of the mobile terminal 500 may be from the front surface to the rear surface of the mobile terminal 500, or the opposite direction. For example, the optical axes (Z-axes) of the lenses included in the camera module 1000 may be formed in the width direction or length direction of the mobile terminal 500 (X-axis direction or Y-axis direction). Therefore, even if the camera module 1000 has functions such as auto focusing (hereinafter referred to as AF), zoom, and optical image stabilizing (hereinafter referred to as OIS), the thickness of the mobile terminal 500 does not increase, which allows the mobile terminal 500 to be miniaturized and thinner.

[0071] The camera module 1000 according to an embodiment of the present invention may have at least one of AF, Zoom, and OIS functions. The camera module 1000 having the AF, Zoom, and OIS functions is equipped with various components, which increases the size of the camera module compared to a general camera module. The increased size of the camera module 1000 poses a problem in miniaturizing the mobile terminal 500 to which the camera module 1000 is attached.

[0072] For example, a camera module may have a large number of stacked lenses for a zoom function. If the multiple stacked lenses are arranged in the thickness direction of the device, the thickness of the device increases depending on the number of stacked lenses. Therefore, if the thickness of the device is not increased, the number of stacked lenses cannot be sufficiently secured, resulting in weak zoom performance. Furthermore, to implement AF and OIS functions, an actuator must be installed to move the lens group along the optical axis or in a direction perpendicular to the optical axis. However, if the optical axis of the lens group is arranged in the thickness direction of the device, the actuator for moving the lens group must also be installed in the thickness direction of the portable electronic device. This increases the thickness of the device. However, in the camera module 1000 according to an embodiment of the present invention, the optical axes (Y axes) of the multiple lenses are arranged perpendicular to the thickness direction of the mobile device 500 (i.e., arranged in a direction parallel to the wide surface of the mobile device 500). This allows the mobile device 500 to be compact even when equipped with a camera module 1000 having AF, zoom, and OIS functions. Furthermore, the camera module 1000 slides down along the optical axis Y and slides up in the opposite direction. As a result, the vertical thickness of the sliding-down camera module 1000 can be made thinner, allowing the mobile terminal 1 to be further miniaturized. When using the camera function, the camera module 1000 slides up and protrudes outside the case 501 of the mobile terminal 500, and the centers of the lenses (i.e., the optical axes) are aligned on the same straight line. Here, sliding-down refers to a state in which a portion of the edge of the lens in the camera module 1000 supports sliding in a fixed position, and the other portion of the edge is tilted toward the light incident side in the optical axis direction. The sliding-up refers to a state in which the lens is moved in the opposite direction to sliding-down, and is aligned so that the optical axis is aligned with the center of the lens. The sliding movement may be a sliding movement in one direction M5 or the opposite direction M6, or a multiple-lens tilt.In FIG. 25, in addition to the camera module 1000 according to the embodiment of the invention, a camera module with other performance may be further arranged inside the case 501 of the mobile terminal, but is not limited thereto.

[0073] 26 and 27, a camera module 1000 may include a first reflecting mirror 515, a lens module 510 having a plurality of lenses, and a second reflecting mirror 517. The camera module 1000 may include a printed circuit board 551 and an image sensor 553 disposed on the printed circuit board 551. The camera module 1000 may include a driving unit 530 for sliding or tilting the lens module 510, the first reflecting mirror 515, and the second reflecting mirror 517.

[0074] As shown in FIG. 27, the first reflecting mirror 515 is disposed at a 45-degree angle to change the optical path of incident light L0 irradiated from above at a right angle. The first reflecting mirror 515 is the mirror closest to the object side and can reflect the incident light toward the plurality of lenses. The second reflecting mirror 517 is disposed at a 45-degree angle to change the optical path of the light incident through the plurality of lenses at a right angle. The second reflecting mirror 517 is the mirror closest to the sensor side and can reflect the incident light toward the image sensor 553 and focus the light on the image sensor 553. The lens module 510 having the plurality of lenses is disposed between the first reflecting mirror 515 and the second reflecting mirror 517. A first line passing through the centers of the plurality of lenses may be an optical axis, and refracts the light incident through the first reflecting mirror 515 and outputs it to the second reflecting mirror 517. An aperture is disposed on the edge side of the incident surface (object side) of one of the two lenses closest to the first reflecting mirror 515 among the plurality of lenses. The lens module 510 may include three or more lenses, for example, three to seven lenses. Among the lenses, the lens closest to the first reflecting mirror 515 may have positive refractive power, and the lens L1 closest to the second reflecting mirror 517 may have negative refractive power. The lenses may include at least one or both of a lens with positive refractive power and a lens with negative refractive power. At least one or two of the lenses may have a convex or aspherical surface on at least one or both sides of the entrance or exit surface. At least one or two of the lenses may have a concave or flat surface on at least one of the entrance or exit surface. The lenses may include lenses made of a solid material or a liquid. The lens module 510 may include at least one liquid lens. The liquid lens has a cavity containing a conductive liquid and a non-conductive liquid, and the curvature of the interface between the conductive liquid and the non-conductive liquid can be adjusted by an external power source. The liquid lens is positioned closer to the first reflecting mirror 515 than to the second reflecting mirror 517 .As another example, the liquid lens may be positioned closer to the second reflecting mirror 517 than to the first reflecting mirror 515. The cavity of the liquid lens may be wider in a direction adjacent to the first reflecting mirror 515 than in a direction adjacent to the second reflecting mirror 517.

[0075] In the case where a second line extends perpendicular to a first line passing through the centers of the lenses, the second lines passing through the central surfaces or tangents of the lenses are arranged parallel to each other. The second line may extend in the thickness direction of the mobile terminal. The upper portions of at least one or all of the lenses protrude from the upper portion of the case 501 of the mobile terminal, as shown in FIGS. 25 and 27. The upper portions of the first and second reflecting mirrors 515 and 517 protrude from the upper portion of the case 501 of the mobile terminal, as shown in FIGS. 25 and 27. The image sensor 553 converts light reflected by the second reflecting mirror 517 into an electrical signal. The image sensor 553 is mounted on a printed circuit board 551. The direction of light incident on the image sensor 553 may be perpendicular to the optical axis. The direction parallel to the upper surfaces of the printed circuit board 551 and the image sensor 553 may be perpendicular to the optical axis.

[0076] The camera module 1000 according to an embodiment of the invention may include at least one of a wide-angle lens module, an ultra-wide-angle lens module, and a telephoto lens module. The ultra-wide-angle lens module has a wider angle of view than the wide-angle lens module. For example, the wide-angle lens module may have an angle of view of 45 degrees or more or a range of 45 to 90 degrees, and the ultra-wide-angle lens module may have an angle of view of 120 degrees or more. By incorporating lens modules with various functions, user convenience and the quality of captured images can be improved. An optical filter (not shown) is disposed between the image sensor 553 and the second reflecting mirror 517. The camera device according to an embodiment of the invention is provided in a state as shown in FIG. 27 when the camera is in a non-driving mode or a non-use mode, and in a state as shown in FIG. 26 when the camera is in a driving mode or a use mode.

[0077] 32 to 34, the camera module may include a holder 512 and guide shafts 521 and 523 formed around each of the lenses. The holder 512 can support and protect the periphery of each of the lenses. One or more guide shafts 521 and 523 may be arranged on the outside of the lens module 510, for example, two or three guide shafts may be arranged. The two guide shafts 521 and 523 may be positioned opposite each other around the center of the lens as shown in FIG. 32, or may be spaced apart by an angle ranging from 120 degrees to 240 degrees. The guide shafts 521 and 523 can guide the movement of the lenses along the outside of the lenses.

[0078] The camera module may include movement guide units 1512A and 512B protruding from the outside of the holder 512. The movement guide units 512A and 512B are coupled to the guide shafts 521 and 523, respectively. One or more, for example, two or three, of the movement guide units 512A and 512B may be disposed on the outside of the holder 512. The movement guide units 512A and 512B have through holes therein, into which the guide shafts 521 and 523 are inserted. The movement guide units 512A and 512B have through holes and can guide at least one of the guide shafts 521 and 523 when it moves in the optical axis direction. For example, the first guide shaft 521 disposed above the center of the lens module 510 moves in the optical axis direction, and the second guide shaft 523 disposed below the center of the lens module 510 is a fixed shaft that supports the movement of the first guide shaft 521 and can support the lens module 510 when it slides down or up. Here, the connection portion between the first moving guide unit 512A that supports the first guide shaft 521 and the holder 512 has a width (e.g., line width) smaller than the width or diameter of the first moving guide unit 512A and is connected by a flexible material. This allows the connection portion between the first moving guide unit 512A and the holder 512 to provide flexibility when the first guide shaft 521 reciprocates. As another example, the connection portion may be in the form of a ball that comes into contact between the first moving guide unit 512A and the holder 512 and can be connected to each other by ball friction.

[0079] In addition, a connecting portion between the second movable guide unit 512B supporting the second guide shaft 523 and the holder 512 has a width (e.g., a line width) smaller than the width or diameter of the second movable guide unit 512B and is connected using a flexible material. As a result, the connecting portion between the second movable guide unit 512B and the holder 512 can provide flexibility when the second guide shaft 523 reciprocates. As another example, the connecting portion may be in a ball shape and contact the first movable guide unit 512A and the holder 512, allowing them to be connected to each other by ball friction. As another example, the first and second movable guide units 512A and 512B may have an open groove or an open recess formed on the outside, exposing portions of the guide shafts 521 and 523 to allow movement. The guide shafts 521 and 523 are disposed outside the area where light is incident. That is, the guide shafts 521 and 523 are disposed in an area that is not exposed to the opening of the case 501. Furthermore, the guide shafts 521 and 523 are arranged in a range where they do not affect the light incident on the image sensor 553 .

[0080] The holder 512 and the movement guide units 512A and 512B are disposed outside the first reflection mirror 515 and the second reflection mirror 517. As a result, the guide shafts 521 and 523 are individually connected to the first reflection mirror 515, each lens, and the second reflection mirror 517. As a result, when converting from the structure shown in FIG. 26 to the structure shown in FIG. 27, the first guide shaft 521 can move in a direction from the first reflection mirror 515 to the second reflection mirror 517. At this time, the second guide shaft 523 supports the movement of the first and second reflection mirrors 515 and 517 and the plurality of lenses. As a result, the upper portions of the lens module 510 and the first and second reflection mirrors 515 and 517 protrude outside the case 501 of the mobile terminal, and the centers of the plurality of lenses are aligned with the same optical axis.

[0081] Conversely, when converting from the structure shown in FIG. 27 to the structure shown in FIG. 26, the first guide shaft 521 can move in a direction from the second reflecting mirror 517 to the first reflecting mirror 515. At this time, the second guide shaft 523 supports the movement of the first and second reflecting mirrors 515 and 517 and the lenses. As a result, the upper parts of the lens module 510 and the first and second reflecting mirrors 515 and 517 are housed inside the case 501 of the mobile terminal, and the centers of the lenses are aligned on different axes. At this time, the camera module does not protrude from the surface of the mobile terminal, thereby protecting the lenses and improving the appearance design when in the non-use mode. Here, the height difference G5 between the upper ends of the lens module 510 and the first and second reflecting mirrors 515 and 517 in the drive mode and the non-drive mode may be 2 mm or more, for example, in the range of 4 mm to 10 mm. As a result, the upper part of the camera module can be exposed during use and hidden when not in use.

[0082] The camera module may include a driving unit 130 that transmits a driving force to at least one of the guide shafts 521 and 523. The driving unit 530 may include at least one of a piezoelectric element, an actuator, or a stepping motor. The driving unit 530 may move at least one guide shaft 521 in the optical axis direction. For example, a piezoelectric element may control the guide shaft 521, which moves linearly in response to a physical displacement caused by an applied electric field.

[0083] The driving unit 530 according to the embodiment of the invention may include an actuator including a mover 531 disposed outside the first reflecting mirror 515 and a stator 533 facing the mover 531. The mover 531 is connected to the first guide shaft 521. The mover 531 is disposed in a direction perpendicular to the extension direction of the first guide shaft 521 and can move up or down relative to the first guide shaft 521 in the direction perpendicular to the extension direction of the first guide shaft 521. When the mover 531 is a magnet, the stator 533 may be a coil. As another example, when the mover 531 is a coil, the stator 533 may be a magnet. When an external power source is applied to the driving unit 530, a magnetic field is formed between the mover 531 and the stator 533 according to the polarity of the power source applied to the stator 533. At this time, the movable element 531 is connected to the first guide shaft 521, and a force pushing the first guide shaft 521 outward from the optical axis is applied by a magnetic field generated by a power supply of a first polarity. At this time, the first guide shaft 521 is moved in a direction from the first reflecting mirror 515 toward the second reflecting mirror 517 (driving mode). In this case, the upper part of the camera module protrudes from the opening 1D of the terminal case 501. As a result, the first reflecting mirror 515 reflects light incident from the object side, and the lens module 510 having a plurality of lenses aligned on the optical axis refracts the light incident through the first reflecting mirror 515 toward the second reflecting mirror 517, which then focuses the incident light on the image sensor 553. Conversely, a force pulling the first guide shaft 521 in the optical axis direction is applied by a magnetic field generated by a power supply of a second polarity. As a result, the first guide shaft 521 is moved in a direction from the second reflecting mirror 517 to the first reflecting mirror 515 (non-driving mode). In this case, the upper part of the camera module is housed inside the case 501 of the terminal and is disposed below a line 1B that is horizontal to the surface of the case 501. At this time, the tilt angles of the first reflecting mirror 515, the lenses, and the second reflecting mirror 517 may be the same.32, the movable element 531 is connected to the first guide shaft 521 in the central region of the lens module 510 and can push and pull the first guide shaft 521 by a magnetic field. As shown in FIGS. 26 and 27, the stator 533 is fixed to one surface of a support body 541. The support body 541 is disposed so that the stator 533 faces the movable element 531.

[0084] As shown in FIGS. 28 and 29, a protective cover 501A having a transparent window 501B may be provided on the top of the camera module. The transparent window 501B is disposed on top of a first reflecting mirror 515 and allows incident light to pass through to the first reflecting mirror 515. The protective cover 501A supports the transparent window 501B and protects the top of the camera module. The protective cover 501A protrudes together with the camera module when the camera is in a driving mode, and is disposed on the same horizontal plane as the top of the case 501 when the camera is in a non-driving mode. For example, as shown in FIG. 35, the protective cover 501A may be disposed on top of a holder 512 for multiple lenses or supported by a first guide shaft 521. As a result, the protective cover 501A slides up or down in response to movements M5 and M6 of the first guide shaft 521.

[0085] 30 and 31, in the camera module, at least one or both of the first reflecting mirror 515A and the second reflecting mirror 517 may have a triangular prism shape. However, the prism-shaped structure may be arranged taking into consideration the height of the reflecting mirror and interference with the movement of the protective cover 501A and other lenses. For example, when the first reflecting mirror 515A is arranged in a prism shape, a mover 531 is arranged on the rear surface or a plane perpendicular to the first reflecting mirror 515A. The mover 531 moves M5 and M6 to slide up and down together with the first reflecting mirror 515A and the first guide shaft 521.

[0086] 32 and 33, two guide shafts 521 and 523 are disposed opposite each other, and movable guide units 512A and 512B may be disposed integrally with the outer holder 512 of the lens or may be connected separately. As shown in FIG. 34, three guide shafts 521, 523, and 525 and outer guide units 512A, 512B, and 512C of the holder 512 are disposed at different positions, and one guide shaft 523 disposed on one side of the lens may be spaced apart from the other two 52, 525, and 525 by 120 degrees or more. These three guide shafts 521, 523, and 525 are disposed in an area that does not interfere with the efficiency of incidence on the first reflecting mirror 515 and the efficiency of light collection on the image sensor 553. Here, the field of view (FOV) of the camera module is a first angle, and the angle at which the chief ray is incident is a second angle with respect to the optical axis. The first angle may be, for example, in the range of 20 degrees to 50 degrees, and the second angle may be approximately half the first angle. The second angle may be a chief ray angle (CRA). Using the angle of view and CRA, the height of the camera module (i.e., the height in the thickness direction of the device) can be set through the relationship between the image sensor 553 and the first lens L1 closest to it.

[0087] As shown in Figure 36(A), when the image sensor 553 and the first lens L1 closest to it face each other, Sa can be calculated by S x tan(Sb), where S is the distance between the first lens L1 and the image sensor 553, and Sb may be the CRA (CRA1.0F) incident on the image sensor 553. As shown in Figure 36(C), the diagonal length (SL = 1.0F) of the image sensor 553, i.e., the size, is provided in the range of 8mm to 16mm.

[0088] 36A and 36C, the second reflecting mirror 517 is provided with a height H1 that can cover the size of the image sensor 553, and the back focal length (BFL) may be the sum of the distance Da between the first lens L1 and the second reflecting mirror 517 on the path of the incident light L0 and the distance Db between the second reflecting mirror 517 and the image sensor 553. The sum of distances (Da + Db) may be equal to or greater than the height H1 of the second reflecting mirror 517. If the diagonal length of the first lens L1 is Ll, ​​the thickness is Lt, and the diagonal angle of the first lens is Lq, the height Ld of the first lens L1 can be calculated as S - 2Sa, where S can be calculated as the back focal length (Da + Db).

[0089] The length of the diagonal line Ll is

number

[0090] For this reason, when the telephoto lens module is at standard (x2.5x) and the FOV is 30 degrees, the CRA is set to 15 degrees. Since S is approximately 9.4 mm when the image sensor 553 is 1 / 1.7 inch, H1 is 9.4 mm. When the effective focal length EFL of such a camera device is 17.54, Sa is required to be 2.5 mm and Ld is required to be 6.88. In this case, the height of the lens module can be 3 mm or 5 mm larger than Ld, with a maximum range of 10 mm.

[0091] The length Ll of the diagonal line can be calculated using Equation 2.

[0092]

number

[0093]

number

[0094] The final required Aθ is calculated by Lq+Pq, where Aθ is the angle at which the lens module can be tilted.

[0095] Therefore,

number

[0096] If Lt is 2.8 mm in Equations 3 and 4 and the lens module height H is 7 mm, then Lq = 15.6 degrees, Pq = 47.6 degrees, and Aθ = 63.2 degrees. Therefore, the overall effective height is reduced to 7 mm, less than 10 mm. This allows the lens height or diameter to be reduced by 35% or less, for example, between 25% and 35%, based on the overall height. That is, the height of the lens module can be reduced by 30% by tilting forward or backward. A portion of the camera module protrudes from the outside of the case 501 of a mobile terminal such as a smartphone only when in use and does not protrude when not in use. This solves the problem of a portion of the lens module of the camera device protruding outside the smartphone when the camera is in non-use mode, improving portability and appearance design. It also protects the surface of the camera module from damage.

[0097] The features, structures, and effects described in the above embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Furthermore, the features, structures, and effects illustrated in each embodiment may be combined or modified with other embodiments by a person skilled in the art to which the embodiment belongs. Therefore, such combinations and modifications are to be construed as falling within the scope of the present invention. Furthermore, while the above description focuses on the embodiments, these are merely examples and do not limit the present invention. A person skilled in the art to which the present invention belongs may make various modifications and applications not exemplified above within the scope of the present embodiments, provided that such modifications and applications do not deviate from the essential characteristics of the present embodiments. For example, each component specifically presented in the embodiments may be modified. Differences in such modifications and applications are to be construed as falling within the scope of the present invention, as defined by the appended claims.

Claims

1. a first holder having a plurality of first lens groups arranged in a first direction; a second holder having a plurality of second lens groups arranged in the first direction; a printed circuit board; a plurality of image sensors arranged on the printed circuit board in the first direction; a first driving means for moving the first holder in the optical axis direction; a second driving means for moving the second holder in a second direction perpendicular to both the optical axis direction and the first direction, each of the plurality of first lens groups includes a plurality of lenses; each of the first lens groups is aligned with a different optical axis from each of the image sensors; each of the second lens groups includes a plurality of lenses aligned on different optical axes; the second holder is caused to overlap the first holder in the optical axis direction or the second direction by the second driving means, The second holder has an accommodating space for accommodating the first holder.

2. 2. The camera module according to claim 1, wherein when the first holder and the second holder overlap in the optical axis direction, a minimum distance between the lenses of the first lens group and the lenses of the second lens group that face each other is 0.5 mm or less, and a maximum distance between the lenses of the first lens group and the lenses of the second lens group that face each other is 4 mm or more.

3. when the second holder and the first holder overlap in the optical axis direction, each of the second lens groups overlaps with each of the first lens groups in the optical axis direction; The camera module of claim 1 or 2, wherein the plurality of image sensors are aligned with the optical axes of the plurality of second lens groups, respectively.

4. The camera module according to claim 3 , wherein the first holder and the first lens group are moved up or down to the outside of the case by the first driving means.

5. The camera module according to claim 1 , wherein each of the second lens groups or each of the first lens groups is disposed above each of the image sensors.

6. the first driving means and the second driving means move the first holder and the second holder so that they overlap in the optical axis direction in a driving mode, and move the first holder toward the image sensor in the optical axis direction and move the second holder in the second direction in a non-driving mode; The camera module according to claim 1 , wherein the first holder and the second holder are moved simultaneously by the first driving means and the second driving means.

7. The thickness of the first holder is in the range of 30% to 40% of the TTL of the entire optical system, The camera module according to claim 1 , wherein the thickness of the second holder is in the range of 50% to 60% of the TTL of the entire optical system.

8. the plurality of first lens groups includes two or three lens modules; the second lens groups have lens modules identical to the lens modules of the first lens groups; The camera module according to claim 1 , wherein one of the lens modules in the first lens group is a wide-angle lens module and the other is a telephoto lens module.

9. a printed circuit board; a plurality of image sensors arranged in a first direction on the printed circuit board; a plurality of optical filters spaced apart from the image sensor; a first holder having a plurality of first lens groups arranged in the first direction; a second holder having a plurality of second lens groups arranged in the first direction; a first driving means for moving the first holder in the optical axis direction; a second driving means for moving the second holder in a second direction perpendicular to both the optical axis direction and the first direction, each of the plurality of first lens groups includes a plurality of lenses; each of the first lens groups is aligned with a different optical axis from each of the image sensors; each of the second lens groups includes a plurality of lenses; the second holder is caused to overlap the first holder in the optical axis direction or the second direction by the second driving means, the first driving unit includes a first guide shaft extending in the optical axis direction outside the first holder, a first movable part connecting the first guide shaft and the first holder, and a first driving part moving the first movable part through the first guide shaft, The second driving means includes a second guide shaft extending in the second direction outside the second holder, a second movable part connecting the second guide shaft and the second holder, and a second driving part moving the second movable part through the second guide shaft.

10. The camera module of claim 9 , wherein the plurality of optical filters are disposed inside the second holder.

11. The camera module according to claim 1 , wherein the length of the first holder in the first direction is equal to or longer than the length of the first holder in the second direction.

12. the first driving means and the second driving means position each of the second lens groups between each of the first lens groups and each of the image sensors; The camera module of claim 9 , wherein the plurality of optical filters are moved in the second direction together with the second holder.

13. the plurality of first lens groups include a 1-1 lens group and a 1-2 lens group arranged in the first direction, the plurality of second lens groups include a 2-1 lens group and a 2-2 lens group arranged in the first direction, the first-1st lens group and the second-1st lens group are a first lens module; the first-second lens group and the second-second lens group are a second lens module; the lens closest to the object side of the first-first lens group and the second-first lens group has positive refractive power; 12. The camera module according to claim 1, wherein the lens of the 1-2nd lens group and the 2-2nd lens group that is closest to the image sensor has negative refractive power.

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