KR20180029662A - Dual camera module and optical device - Google Patents

Abstract

An embodiment of the present invention relates to a dual camera module which comprises: a first camera module including a first liquid lens, and photographing a first image; and a second camera module including a second liquid lens, and photographing a second image. A viewing angle of the first camera module is smaller than that of the second camera module. At least a part of the viewing angle of the first camera module is included in the viewing angle of the second camera module, thereby having an overlap area between the first and second images in order to generate a synthesis image synthesizing the first and second images. When the first camera module is focused, the focal distance of the first liquid lens is varied by a distance with a subject. When the second camera module is focused, the focal distance of the second liquid lens is varied by a distance with a subject.

Description

[0001] DUAL CAMERA MODULE AND OPTICAL DEVICE [0002]

This embodiment relates to a dual camera module and an optical device.

The following description provides background information for the present embodiment and does not describe the prior art.

As the spread of various portable terminals is widely popularized and the wireless Internet service is commercialized, the demands of consumers related to portable terminals are diversified, and various kinds of additional devices are installed in portable terminals.

Among them, there is a camera module for taking images or images. The camera module can perform auto focus (AF) function that automatically adjusts the focus according to the distance from the subject and OIS (Optical Image Stabilization) function that corrects the user's camera shake during shooting.

The general camera module performs the autofocus function and the camera shake correction function by the lens driving device. The lens driving device is a device that activates the lens module by electromagnetic interaction between a coil and a magnet, and may be referred to as a voice coil motor (VCM).

On the other hand, the dual camera module includes two single camera modules, each of which combines two or more images taken by the single camera module to generate a composite image having a high resolution or a high resolution and a high modulation transfer function (MTF) Camera module.

However, in the conventional dual camera module, electromagnetic interference occurs between lens driving devices.

In addition, the lens driving apparatus occupies a large space for installation with an assembly of a plurality of parts. Therefore, it is difficult to design a single camera module in close proximity.

Furthermore, in the case where only one of the single camera modules is used to drive the lens driving device, the other single camera module can not perform the autofocus function and the quality of the composite image is lowered.

The present embodiment includes a single camera module capable of independently performing an autofocus function and a camera-shake correction function independently of electromagnetic interference even when placed close to each other, and has a compact structure, Module.

The dual camera module of the present embodiment includes: a first camera module including a first liquid lens, the first camera module capturing a first image; Wherein the angle of view of the first camera module is smaller than the angle of view of the second camera module and the angle of view of the first camera module is at least a portion of the angle of view of the first camera module, An overlap region exists between the first image and the second image so that the first image and the second image can be synthesized by combining the first image and the second image, When the module is focused, the focal length of the first liquid lens varies according to the distance from the subject. When the second camera module is focused, the focal length of the second liquid lens can be varied according to the distance from the subject .

Wherein the first camera lens is focused by changing the first interface of the first liquid lens and the focal length of the first liquid lens becomes shorter the closer the subject is to the first liquid lens, The camera module is focused by changing the second interface of the second liquid lens and the focal distance of the second liquid lens may be shorter as the object is closer to the second liquid lens.

Wherein the first liquid lens includes a first cavity in which two different liquids are disposed, the upper diameter of the first cavity is larger than the lower diameter, the diameter of the first cavity is smaller toward the lower portion from the upper portion, The second liquid lens includes a second cavity in which two different liquids are disposed, the upper diameter of the second cavity is larger than the lower diameter, and the diameter of the second cavity may be smaller from the upper portion to the lower portion.

Wherein the first liquid lens includes a first cavity in which two different liquids are disposed, the lower diameter of the first cavity is larger than the upper diameter, the diameter of the first cavity is smaller toward the upper portion from the lower portion, The second liquid lens includes a second cavity in which two different liquids are disposed, the lower diameter of the second cavity is larger than the upper diameter, and the diameter of the second cavity may be smaller from the lower portion toward the upper portion.

When the subject is focused at a position 10 cm away from the first camera module, the shape of the first interface of the first liquid lens is convex toward the upper side of the first cavity, When focusing is performed at a distance of 10 cm, the shape of the second interface of the second liquid lens may be convex toward the upper side of the second cavity.

When the subject is focused at a distance of 10 cm from the first camera module, the shape of the first interface of the first liquid lens is convex downward in the first cavity, When focusing is performed at a distance of 10 cm, the shape of the second interface of the second liquid lens may be convex downward of the second cavity.

When the subject is focused at a position 10 cm away from the first camera module, the curvature of the first interface is less than the curvature of the second interface when the subject is at a distance of 10 cm from the second camera module It can be big.

The first camera module may further include a first lens holder, wherein the first lens holder includes a first lens disposed at the uppermost portion of the first lens holder, and the second camera module includes a second lens holder And the second lens holder includes a second lens disposed at the top of the second lens holder, and the diameter of the first lens may be smaller than the diameter of the second lens.

Wherein the first camera module includes a first cover member that receives the first liquid lens and the second camera module includes a second cover member that accommodates the second liquid lens, And a first side plate that forms a side surface, the second cover member includes a second top plate that forms an upper portion of the second cover member, and a second top plate that forms an upper side of the first cover member, And the widths of the first upper surface plate and the second upper surface plate may be equal to each other.

The width of the first top plate may be narrower than the width of the second top plate.

The maximum diameter of the cavity formed in the first liquid lens may be smaller than the maximum diameter of the cavity formed in the second liquid lens.

The minimum diameter of the cavity formed in the first liquid lens may be smaller than the minimum diameter of the cavity formed in the second liquid lens.

The focal length of the second camera module may be smaller than the focal length of the first camera module.

The first interface may be changed to adjust the MTF value of the first image, and the second interface may be changed to adjust the MTF value of the second image.

The first interface may be changed to adjust the MTF value of the first image, and the second interface may be changed to adjust the MTF value of the second image.

The first and second camera modules may simultaneously perform autofocusing.

The camera shake correction can be further performed by changing the first interface of the first liquid lens.

And the second interface of the second liquid lens is changed, so that the camera shake correction can be performed.

The optical apparatus of this embodiment includes: a first camera module including a first liquid lens and for photographing a first image; A second camera module including a second liquid lens and capturing a second image; Wherein the angle of view of the first camera module is smaller than the angle of view of the second camera module and the angle of view of at least a portion of the angle of view of the first camera module is smaller than the angle of view of the second camera module. An overlap region exists between the first image and the second image so that the first image and the second image can be synthesized by combining the first image and the second image, When the module is focused, the focal length of the first liquid lens varies according to the distance to the subject. When the second camera module is focused, the focal length of the second liquid lens varies according to the distance to the subject. When the composite image is digitally zoomed around the overlap region to enlarge the magnification, the resolution of the composite image may decrease and then rise.

The dual camera module of this embodiment includes a first camera module that includes a first lens module that is operated by a first lens driving device and that photographs a first image; Wherein the angle of view of the first camera module is smaller than the angle of view of the second camera module and at least a part of the angle of view of the first camera module is smaller than the angle of view of the second camera module. Wherein an overlap region exists between the first image and the second image so as to generate a composite image that is included in the angle of view of the second camera module and is a composite of the first image and the second image, In the module, the first lens module moves in the direction of the optical axis to perform an autofocus function, and the second camera module can change the focal length according to the distance between the second liquid lens and the subject when the second camera module is focused.

The focal length of the second liquid lens can be shortened as the subject approaches the second liquid lens.

The first and second camera modules may simultaneously perform an autofocus function.

A first camera module for photographing a first image, the first camera module including a first lens module that is operated by a first lens driving device; A second camera module including a second liquid lens and capturing a second image; Wherein the angle of view of the first camera module is smaller than the angle of view of the second camera module and the angle of view of at least a portion of the angle of view of the first camera module is smaller than the angle of view of the second camera module. Is present in an overlapping area between the first image and the second image so as to generate a composite image that is included in the angle of view of the second camera module and is a composite of the first image and the second image, When the camera module is focused, the first lens module moves in the direction of the optical axis to perform focusing, and when the second camera module is focused, the focal length of the second liquid lens changes according to the distance to the subject, When the composite image is digitally zoomed around the overlap region to enlarge the magnification, the resolution of the composite image may decrease and then rise.

A first camera module for photographing a first image, the first camera module including a first lens module that is operated by a first lens driving device; Wherein the angle of view of the second camera module is smaller than the angle of view of the first camera module and the angle of view of the second camera module is at least a portion of the angle of view of the second camera module, An overlap region between the second image and the first image exists so as to generate a composite image that is included in the angle of view of the first camera module and is a composite of the second image and the first image, The module may be configured such that the first lens module is movable in the direction of the optical axis to perform an autofocus function and the focal length of the second camera module may be varied according to the distance between the second liquid lens and the subject when the second camera module is focused.

Wherein the first camera module includes a first cover member that receives the first lens module and the second camera module includes a second cover member that accommodates the second liquid lens, And a first side plate that forms a side surface and a second top plate that forms an upper portion of the second cover member, And the widths of the first upper surface plate and the second upper surface plate may be different from each other.

The width of the first top plate may be narrower than the width of the second top plate.

Wherein the first camera module includes a first cover member that receives the first lens module and the second camera module includes a second cover member that accommodates the second liquid lens, And a first side plate that forms a side surface and a second top plate that forms an upper portion of the second cover member, And the widths of the first upper surface plate and the second upper surface plate may be different from each other.

The width of the first top plate may be wider than the width of the second top plate.

The dual camera module of the present embodiment is a camera module that includes two single camera modules and combines two or more images taken by each single camera module to generate a composite image having high resolution, high resolution or high MTF. Therefore, it is required that each single camera module be arranged close to each other. As the single camera module is separated, the parallax becomes larger and the image matching is not performed smoothly.

Since the liquid lens camera module is used in at least one of the first camera module and the second camera module in the dual camera module of this embodiment, it is possible to perform the autofocus function and the camera shake correction function without mutual electromagnetic interference, . Furthermore, the components constituting the dual camera module are minimized to have a compact structure.

1 is a perspective view showing a liquid lens camera module.
2 is an exploded perspective view showing a liquid lens camera module.
3 is an exploded perspective view showing a liquid lens.
4 is a cross-sectional view showing a liquid lens.
5 is a perspective view showing the driving camera module.
6 is an exploded perspective view showing the drive camera module.
7 is a conceptual view showing an autofocus function of the drive camera module.
8 is a conceptual diagram showing a camera-shake compensation function of the drive camera module.
9 is a perspective view illustrating a dual camera module according to the first, second, and third embodiments.
10 is a conceptual diagram showing a dual camera module according to the first embodiment.
11 is a conceptual diagram showing a dual camera module according to the first modification of the first embodiment.
12 is a conceptual diagram showing a dual camera module according to a second modification of the first embodiment.
13 is a conceptual diagram showing a dual camera module according to a third modification of the first embodiment.
14 is a conceptual diagram showing a dual camera module according to a fourth modification of the first embodiment.
15 is a conceptual diagram showing a dual camera module according to a fifth modification of the first embodiment.
16 is a conceptual view showing a cover member, a lens holder and a liquid lens according to a fifth modification of the first embodiment.
17 is a conceptual diagram showing a dual camera module according to the second embodiment.
18 is a conceptual diagram showing a dual camera module according to the first modification of the second embodiment.
19 is a conceptual diagram showing a dual camera module according to a second modification of the second embodiment.
20 is a conceptual diagram showing a dual camera module according to a third modification of the second embodiment.
Fig. 21 is a conceptual diagram showing a dual camera module according to the third embodiment.
22 is a conceptual diagram showing a dual camera module according to the first modification of the third embodiment.
23 is a conceptual diagram showing a dual camera module according to a second modification of the third embodiment.
24 is a conceptual diagram showing a dual camera module according to a third modification of the third embodiment.
Fig. 25 is a conceptual diagram showing photographing with the dual camera module of the first, second, and third embodiments.
26 is a conceptual diagram showing a change in resolution when a composite image is digitally zoomed.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the components in the drawings, the same components are denoted by the same reference numerals whenever possible, even if they are displayed on other drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected, coupled, or connected to the other component, It is to be understood that another element may be "connected "," coupled ", or "connected" between elements.

The MTF (Modulation Transfer Function), which is used below, is an index for evaluating the quality of an image, and it is important to determine whether the image has a high spatial frequency or a strong contrast. The higher the MTF of the image, the better the resolution of the spatial frequency and the better the transmission of contrast.

The autofocus (AF) function used below is defined as a function of changing the interface of the liquid lens according to the distance of the subject or focusing the lens module by moving the lens module in the optical axis direction by the lens driving device.

The optical image stabilization (OIS) function used below is used to change the interface of the liquid lens so as to cancel the vibration (motion) caused by the external force, or to change the interface of the lens module in the direction perpendicular to the optical axis It is defined as a function of moving or tilting.

Hereinafter, the x-axis direction shown in the figure is defined as the forward and backward directions. In this case, the direction of the arrow in the x-axis is rearward. The y-axis direction shown in the figure is defined as a left-right direction. In this case, the arrow direction of the y-axis is the right side. The z-axis direction shown in the drawing is defined as a vertical direction. In this case, the arrow direction of the z axis is the lower side. The z-axis direction can be mixed with the optical axis direction.

Hereinafter, the liquid lens camera module 100 will be described with reference to the drawings. The liquid lens camera module 100 can be used as the first and second camera modules 1 and 2 of the dual camera module 1000 of the first embodiment and can be used as the second and third camera modules 1 and 2 of the dual camera module 2000 of the second embodiment. It can be used as the camera module 2 and can be used as the first camera module 1 of the dual camera module 3000 of the third embodiment. FIG. 1 is a perspective view showing a liquid lens camera module, FIG. 2 is an exploded perspective view showing a liquid lens camera module, FIG. 3 is an exploded perspective view showing a liquid lens, and FIG.

Hereinafter, the structure of the liquid lens camera module 100 will be described.

The liquid lens camera module 100 may include a cover member 110, a lens holder 120, a lens 130, a liquid lens 140, an image sensor 150, and a substrate 160.

The cover member 110 may be an exterior member. The cover member 110 may be made of a metal. In this case, the cover member 110 may block EMI (Electro Magnetic Interference). That is, the cover member 110 can prevent the external electromagnetic wave from flowing inward. Further, the electromagnetic wave generated inside the cover member 110 can be prevented from being emitted to the outside.

The cover member 110 may be in the form of a hollow block. The cover member 110 may include a rear side 112. The rear side surface 112 may be a side surface disposed behind the cover member 110. The cover member 110 may include a front side 113. The front side surface 113 may be a side surface disposed in front of the cover member 110. However, the shape of the cover member 110 is not limited thereto, and any shape can be applied as long as the lens holder 120 can be covered.

The cover member 110 may include a top plate on which the transmission window 111 is formed and a side plate extending downward from the top plate. The side plates may include a front side 113 or a rear side 112. The front side surface 113 and the rear side surface 112 may be formed to be opposed to or parallel to each other. The top plate or the side plate may be engageable with the lens holder 120 or the substrate 170.

A transmission window 111 may be formed on the upper surface of the cover member 110. The transmission window 111 can be aligned with the optical axis of a liquid lens 140 described later with a circular opening. As a result, the light reflected by the subject can move through the transmission window 111 to the lens 130 and the liquid lens 140. The lower surface of the cover member 110 may be opened to form an opening. The lens holder 120 may be positioned inside the cover member 110. The lens holder 120 can be received in the cover member 110. The cover member 110 may be supported by a substrate 170 described later. The cover member 110 may be fixedly coupled with the substrate 170. In this case, the substrate 170 can close the opening of the lower surface of the cover member 110.

The lens holder 120 may be located inside the cover member 110. [ The lens holder 120 may be in the form of a block having a lens hole 121 at the center thereof. The lens holder 120 may include at least one lens. The lens hole 121 may be formed through the lens holder 120 in the direction of the optical axis. The lens hole 121 may receive the lens module 130 and / or the liquid lens 140. The lens module 130 may include at least one lens. However, the shape of the first lens holder 120 is not limited thereto, and any shape can be applied as long as the lens 130 and / or the liquid lens 140 can be received. In one embodiment, the lens module 130 may receive a lens barrel comprising at least one lens. Also, the lens module 130 and the lens barrel are integrally formed so that at least one lens can be arranged or coupled to the lens module 130 without a lens barrel.

The liquid lens 140 is a variable focus lens in which the shape of an interface between a liquid or two kinds of liquid is changed by electrowetting phenomenon. The liquid lens 140 may be accommodated in the lens hole 121 in the lens holder 120 or disposed on the upper or lower portion of the lens holder 120. The liquid lens 140 can be coupled to and accommodated in the lens holder 120. The liquid lens 140 may be disposed in the middle of the lens hole 120. That is, the liquid lens 140 may be inserted between the plurality of lenses of the lens module 130. The liquid lens 140 may be disposed on the upper portion of the lens holder 120. That is, the liquid lens 140 may be disposed on the plurality of lenses of the lens module 130. The liquid lens 140 may be connected to the substrate 160. Accordingly, the liquid lens 140 can be supplied with electric current from the substrate 160. The liquid lens 140 may include an upper cover 141, a core plate 142, a cavity 143, an electrode portion 144, an insulating layer 148 and a lower cover 149.

The upper cover 141 may be disposed on the upper portion of the core plate 142. The upper cover 141 can engage with the core plate 142. The lower surface of the upper cover 141 and the upper surface of the core plate 142 can be in contact with each other. Therefore, the upper cover 141 can close the upper portion of the cavity 143. Also, the electrode part 144 and / or the insulating layer 148 may be disposed between the upper cover 141 and the core plate 142. The material of the upper cover 141 may be non-conductive. The material of the upper cover 141 may be glass. The upper cover 141 may be in the form of a plate. A groove may be formed at the center of the lower surface of the upper cover 141. The groove of the upper cover 141 can communicate with the cavity 143. As a result, the first liquid L 1 disposed on the upper portion of the cavity 143 can be filled in the groove of the upper cover 141.

The core plate 142 may be a plate having a thickness and a cavity 143 formed at the center thereof. In the core plate 142, a cavity 143 may be formed on the optical axis. The cavity 143 may be located on the optical path of the liquid lens camera module 100. The cavity 143 can penetrate the core plate 142 up and down. The horizontal cross-sectional area of the cavity 143 may be circular. The horizontal cross-sectional area of the cavity 143 may become narrower toward the bottom. That is, the cavity 143 may be inclined. In addition, the cavity 143 may be formed in an opposite manner, so that the horizontal cross-sectional area of the cavity 143 may become narrower toward the upper portion. The first liquid L1 and the second liquid L2 may be accommodated in the cavity 143. [ The first liquid L1 and the second liquid L2 may not be mixed with each other. The first liquid L1 may be a conductive liquid. The first liquid L1 may be water. The second liquid L2 may be a nonconductive liquid. The second liquid L2 may be an oil. The second liquid L2 may be silicon. The specific gravity of the first liquid L1 and the second liquid L2 may be the same or similar. Therefore, the influence of gravity on the first liquid L1 and the second liquid L2 in the cavity 143 may be insignificant. Further, in the cavity 143, the surface tension of the first liquid L1 and the second liquid L2 can control gravity. The first liquid L1 and the second liquid L2 can be in contact with each other to form the first interface A. The first liquid L1 may be located above the second liquid L2. In other words, the first liquid L1 and the second liquid L2 can be separated from each other to form the first interface 156.

The electrode portion 144 may be disposed on the core plate 142. At least a portion of the electrode portion 144 may be disposed in the core plate 142. The electrode portion 144 may be an electrode material coated on the core plate 142. The electrode portion 144 may include a first electrode 145 and a second electrode 146. The first electrode 145 may be disposed on the upper surface of the core plate 142. The second electrode 146 may be disposed on the inner wall of the cavity 143 of the core plate 142. The second electrode 146 may be disposed on the lower surface of the core plate 142, the inner surface of the cavity 143, and the upper surface of the core plate 142. The second electrode 146 may be connected to the lower surface of the core plate 142, the inner surface of the cavity 143, and the upper surface of the core plate 142 to the periphery of the cavity 143. The first electrode 145 and the second electrode 146 may not be in contact with each other. As a result, the gap 147 may exist on the upper surface of the core plate 142. An insulating material may be disposed in the gap 147. The first electrode 145 may be formed of one electrically connected sector. The first electrode 145 may be divided into a plurality of sectors. The first electrode 145 and the second electrode 146 are spaced apart from each other and an insulating layer 148 may be disposed between the first electrode 145 and the second electrode 146.

The first electrode 145 may be divided into two or four sectors. The first electrode 145 may be divided into four sectors that are symmetrical about the center of the core plate 142. The second electrode 146 may be divided into one or more than two or more sectors. The second electrode 146 may be divided into four sectors. The second electrode 146 may be divided into four sectors that are symmetrical about the center of the core plate 142. The first and second electrodes 145 and 146 may be electrically connected to the substrate 160. The power may be supplied such that the polarities of the first and second electrodes 145 and 146 are opposite to each other. Also, power can be supplied to only some of the first and second electrodes 145 and 146. [ In addition, the intensity of the supplied power can be adjusted.

The insulating layer 148 may be disposed on the electrode portion 144. The insulating layer 148 may be deposited on the electrode portion 144. The insulating layer 148 may be deposited on at least a portion of the electrode portion 144. The insulating layer 148 may be disposed on a portion of the lower cover 149. The insulating layer 148 may extend radially around the cavity 143 on the top surface of the core plate 142 and be disposed on the first electrode 145 and the second electrode 146. The insulating layer 148 may extend radially around the cavity 143 on the top surface of the core plate 142 and may be laminated to the first electrode 145 and the second electrode 146. The insulating layer 148 may be disposed on the second electrode 146 along the inner surface of the cavity 143. The insulating layer 148 may be deposited on the second electrode 146 along the inner surface of the cavity 143. The insulating layer 148 may be disposed at a position opposite to the cavity 143 on the upper surface of the lower cover 149. The insulating layer 148 may be a coating insulating material. The insulating layer 148 may be integrally stacked on the first and second electrodes 146 and disposed on the lower cover 149. Accordingly, the insulating layer 148 may have the same shape as a basket to accommodate the first liquid L1 and the second liquid L2. Further, the insulating layer 148 may be interposed between the second electrode 146 and the first and second liquids L1 and L2. However, since the insulating layer 148 stacked on the upper surface of the core plate 142 does not extend radially outward beyond the grooves formed in the upper cover 141, the first liquid L1 filled in the grooves of the upper cover 141 And can contact the first electrode 145. As a result, when power is applied to the electrode unit 144, electrowetting may occur in the first liquid L1. Therefore, the shape of the interface (A) between the first liquid (L1) and the second liquid (L2) in the meniscus state can be changed.

The lower cover 149 may be disposed under the core plate 142. The lower cover 149 can engage with the core plate 142. The upper surface of the lower cover 149 and the lower surface of the core plate 142 can contact or engage with each other. The upper surface of the lower cover 149 and the lower surface of the core plate 142 can be joined by fusion, bonding, and contact. Therefore, the lower cover 149 can close the lower portion of the cavity 143. The material of the lower cover 149 may be non-conductive. The material of the lower cover 149 may be glass. The lower cover 149 may be in the form of a plate.

The image sensor 150 may be disposed on the upper surface of the substrate 160. The image sensor 150 may be mounted on the substrate 160. The image sensor 150 may be disposed on the optical axis of the liquid lens 140. Therefore, the image sensor 150 can acquire the light transmitted through the liquid lens 140. [ The image sensor 160 may convert the irradiated light into an image. The image may be a concept of optical not only including the digital signal into which the optical signal has been converted, but also the result of outputting such digital signal as light visualized through the display device. The image sensor 150 may be a CCD (charge coupled device), a metal oxide semiconductor (MOS), a CPD, and a CID. However, the type of the image sensor 150 is not limited thereto.

The substrate 160 may be a printed circuit board (PCB). The substrate 160 may be disposed under the cover member 110. In this case, the substrate 160 can close the bottom opening of the cover member 110. In addition, the substrate 160 can support the cover member 100. The substrate 160 may be electrically connected to the liquid lens 140. The substrate 160 may be electrically connected to the liquid lens 140 by the connecting substrate 170. In this case, the connection board 170 may be a flexible printed circuit board (FPCB). In this case, the substrate 160 can apply power to the electrode portion 144. The image sensor 150 may be mounted on the substrate 160. In this case, the substrate 160 can receive the image generated from the image sensor 150.

Hereinafter, the operation and effects of the liquid lens camera module 100 will be described.

The liquid lens camera module 100 can perform the autofocus function and / or the camera shake correction function.

The liquid lens camera module 100 can change the shape of the interface A and perform the autofocus function. The substrate 160 can change the shape of the interface A by applying power to the electrode portion 144. [ When the power is applied so that the first electrode 145 and the second electrode 146 have different polarities, the shape of the interface A may change due to the electro-wetting phenomenon. In this case, the curvature of the interface (A) may change. Further, the curvature of the interface (A) can be adjusted by controlling the intensity of the applied electric power. When the curvature of the interface (A) of the liquid lens 140 changes, the focal length of the liquid lens 140 may change. As a result, the liquid lens camera module 100 can perform the autofocus function by changing the focal length of the liquid lens 140 according to the distance between the liquid lens 140 and the subject. The focal length may be defined as an Effective Focal Length which is the distance from the optical center of the liquid lens 140 to the focal point (image sensor 150). The focal length of the liquid lens 140 can be shortened as the subject approaches the liquid lens 140. With the autofocus function, the liquid lens camera module 100 can shoot an image having a high MTF value by focusing regardless of the distance of the subject.

The liquid lens camera module 100 can change the shape of the interface A and perform the camera shake correction function. The substrate 160 can change the shape of the interface A by applying power to the electrode portion 144. [ When the power is applied to the first electrode 145 by applying different voltage to each sector and the power is applied to the second electrode 146 at an equal voltage to all the sectors, the interface A may change due to the electric wetting phenomenon have. In this case, the center of the interface A can be deflected perpendicular to the optical axis direction. That is, the interface A may exhibit an effect of tilting. Furthermore, it is possible to control the degree of the bias of the center of the interface (A) by adjusting the intensity of the applied voltage. As a result, the shake of the liquid lens camera module 100 can be corrected. The liquid lens camera module 100 can correct an image blur due to an external force and photograph an image having a high MTF value through the camera shake correction function.

When the liquid lens camera module 100 is used as the first camera module 1 of the dual camera modules 1000 and 3000 of the first and third embodiments, the cover member 110 is a "first cover member" The transmission window 111 is a first transmission window, the rear side 112 is a first side, the front side 113 is a front side and the lens holder 120 is a first lens holder First lens module ", the liquid lens 140 is a "first liquid lens ", the lens module 130 is a " first lens module &Quot; first core plate ", the cavity 143 is a "first cavity ", the electrode section 144 is a" first electrode section ", the core plate 142 is a " 1 and the second electrodes 145 and 146 are formed so that the gap 147 serves as the first gap and the insulating layer 148 serves as the first insulating layer and the first and second liquids L1 and L2, The image sensor 150 is a "first image sensor ", the substrate 160 is a" first image sensor ", the interface A is a "first interface ", the lower cover 149 is a & 1 substrate ".

When the liquid lens camera module 100 is used as the second camera module 2 of the dual camera modules 1000 and 2000 of the first and second embodiments, the cover member 110 is a "second cover member" The transmission window 111 is a "second transmission window", the rear side 112 is a rear side, the front side 113 is a second front side, and the lens holder 120 is a " Quot ;, " holder ", the lens hole 121 is referred to as a "second lens hole ", the lens module 130 is referred to as a" second lens module ", the liquid lens 140 is referred to as a & The core 143 is referred to as a " second core plate ", the cavity 143 is referred to as a "second cavity ", the electrode portion 144 is referred to as a" The first electrode 145 is referred to as a "third electrode ", the second electrode 146 is referred to as a" fourth electrode ", the gap 147 is referred to as a "second gap" The first liquid L1 is the third liquid, the second liquid L2 is the fourth liquid, the interface A is the second interface and the lower cover 149 is the second layer, Second bottom cover ", the image sensor 150 is " Unknown sensor ", and the substrate 160 is referred to as a "second substrate ".

Hereinafter, the driving camera module 100 will be described with reference to the drawings. The driving camera module 100 can be used as the first camera module 1 of the dual camera module 2000 of the second embodiment and can be used as the second camera module 2 of the dual camera module 3000 of the third embodiment ). FIG. 5 is a perspective view illustrating a driving camera module, FIG. 6 is an exploded perspective view illustrating a driving camera module, FIG. 7 is a conceptual view illustrating an autofocus function of the driving camera module, And FIG. 9 is a perspective view showing the dual camera module of the first, second, and third embodiments.

Hereinafter, the structure of the drive camera module 200 will be described.

The driving camera module 200 may include a cover member 210, a lens module 220, a lens driving device 230, an image sensor 240, and a substrate 250.

The cover member 210 may be an exterior member. The cover member 210 may be made of a metal. In this case, the cover member 210 may block EMI (Electro Magnetic Interference). In other words, the cover member 210 can prevent electromagnetic waves from entering the inside. Furthermore, the electromagnetic wave generated inside the cover member 210 can be prevented from being emitted to the outside.

However, when the cover member 210 is made of a metal, it may interfere with the operation of the housing 232 by reacting with the magnet 233 of the housing 232 described later. Therefore, the cover member 210 may be made of a non-metallic material. In this case, the cover member 210 may not function to block EMI (Electro Magnetic Interference).

The cover member 210 may be in the form of a hollow block. The cover member 210 may include a rear side 212. The rear side surface 212 may be a side surface disposed behind the cover member 210. The cover member 210 may include a front side 213. The front side surface 213 may be a side surface disposed in front of the cover member 210. However, the shape of the cover member 210 is not limited thereto, and any form can be applied as long as it can cover the lens driving unit 230.

A transmission window 211 may be formed on the upper surface of the cover member 210. The transmission window 211 can be aligned with the optical axis of the lens module 220, which will be described later, with a circular opening. As a result, the light reflected by the subject can move through the transmission window 211 to the lens module 220. The lower surface of the cover member 210 may be opened to form an opening. The lens driving unit 230 may be positioned inside the cover member 210. The lens driving unit 230 may be accommodated in the cover member 210. The cover member 210 can be supported by a substrate 250 described later. The cover member 210 may be fixedly coupled with the substrate 250. In this case, the substrate 250 can close the opening of the lower surface of the cover member 210.

The lens module 220 may be a concept including at least one lens. The lens module 220 may be accommodated in the lens driving device 230. The lens module 200 may be coupled to the bobbin 231. In this case, a bonding method such as bonding or screw bonding may be used. The lens module 220 can be operated by the lens driving device 230. In this case, the lens module 220 may move in the direction of the optical axis, move in the direction perpendicular to the optical axis, or tilt.

The lens driving device 230 can be housed inside the cover member 210. The lens driving device 230 can be supported by the substrate 250. The lens module 220 can be accommodated in the lens driving unit 230. The lens driving unit 230 can operate the lens module 220 by electromagnetic interaction between the magnet 233 and the coil part 234. [ The lens driving device 230 may include a bobbin 231, a housing 232, a magnet 233, a coil portion 234, a connecting member 235, a supporting member 236, and a base 237.

The bobbin 231 can be housed inside the housing 232. The bobbin 231 may be connected to the housing 232 by a connecting member 235. In this case, the bobbin 231 can be elastically supported. The lens module 220 can be accommodated in the bobbin 231. The bobbin 231 may be hollow. The bobbin 231 may be hollow cylindrical. A winding coil of the coil portion 234 may be disposed at the side of the side of the bobbin 231. A connecting member 235 may be disposed at the upper or lower end of the bobbin 231. In this case, the bobbin 231 can be elastically supported so as to be movable in the optical axis direction.

The housing 232 can be received in the interior of the cover member 210. The housing 232 can receive the bobbin 231. The housing 232 and the bobbin 231 may be connected by a connecting member 235. The housing 232 may be connected to the support member 236 and supported by the base 237. In this case, the housing 232 can be elastically supported. The housing 232 may be hollow. The housing 232 may be in the form of a hollow block having a hole in the direction of the optical axis. A magnet 233 may be disposed along the inner surface of the hole of the housing 232. In this case, the magnet 233 may be horizontally disposed (facing) the winding coil of the coil portion 234 disposed on the bobbin 231. A connecting member 235 may be disposed at the upper or lower end of the housing 232. A wire-shaped support member 236 may be disposed at the corner of the housing 232. In this case, the housing 232 may be elastically supported so as to be movable or tilted in the vertical direction with respect to the optical axis.

The coil portion 234 may include two coils. The coil portion 234 may include a winding coil disposed on the side of the bobbin 231. The coil portion 234 may include a pattern coil disposed on the base 237. [ The winding coil of the coil portion 234 may be wound along the side surface of the bobbin 231. The pattern coil of the coil portion 234 may be formed at the corner of the upper surface of the base 237. [ The pattern coil of the coil portion 234 may be arranged so as to be vertically opposed (opposed) to the magnet 233. [ The coil portion 234 may be electrically connected to the substrate 250. The coil portion 234 can be electromagnetically interacted with the magnet 233.

The connecting member 235 can connect the bobbin 231 and the housing 232. The connecting member 235 may be an elastic member. One end of the connecting member 235 may be connected to the bobbin 231 and the other end of the connecting member 235 may be connected to the housing 232. The connecting member 235 may be a leaf spring. In this case, the connecting members 235 exist in pairs, one of which connects the upper ends of the bobbin 231 and the housing 232, and the other connects the lower ends of the bobbin 231 and the housing 232. The bobbin 231 can be resiliently moved by the connecting member 235.

The support member 236 can connect the base 237 and the housing 232. In this case, the housing 232 can be supported from the base 237 with a vertical gap. The support member 236 may be an elastic member. The support member 236 may be a wire. In this case, the lower end of the support member 236 may be fixed to the corner end of the base 237. [ Further, the support member 236 may be disposed and fixed along the vertical edge of the housing 232 in the longitudinal direction. As a result, the housing 232 can be elastically movable.

The base 237 can form the bottom surface of the lens driving device 230. The base 237 may be in the form of a square plate. The base 237 can engage with the lower end of the cover member 210. In this case, the base 237 can cover the lower end opening of the cover member 210. However, the base 237 may be provided with holes aligned with the optical axis. As a result, the light transmitted through the lens module 220 can be irradiated to the image sensor 240, which will be described later. A support member 236 may be fixed to a corner end of the base 237. A pattern coil of the coil portion 234 may be formed at the corner of the base 237. The base 237 may be fixedly supported on the substrate 250.

The image sensor 240 may be disposed on the upper surface of the substrate 250. The image sensor 240 may be mounted on the substrate 250. The image sensor 240 may be disposed on the optical axis of the lens module 220. Accordingly, the image sensor 240 can acquire the light transmitted through the lens module 220. The image sensor 240 may convert the irradiated light into an image. The image may be a concept of optical not only including the digital signal into which the optical signal has been converted, but also the result of outputting such digital signal as light visualized through the display device. The image sensor 240 may be a CCD (charge coupled device), a metal oxide semi-conductor (MOS), a CPD, and a CID. However, the type of the image sensor 160 is not limited thereto.

The substrate 250 may be a printed circuit board (PCB). The substrate 250 may be disposed under the cover member 210. In this case, the substrate 250 can close the bottom opening of the cover member 210. Further, the substrate 250 can support the cover member 210. The upper surface of the substrate 250 may be in contact with the lower surface of the base 237. In this case, the substrate 250 can support the base 237. The substrate 250 may be electrically connected to the coil portion 234. [ In this case, the substrate 250 is capable of applying power to the coil portion 234. In this case, the substrate 250 can control the direction, the wavelength, and the intensity of the current flowing in the coil portion 234. The image sensor 240 may be mounted on the substrate 250. In this case, the substrate 250 can receive the image generated from the image sensor 240.

Hereinafter, the operation and effects of the drive camera module 200 will be described.

The driving camera module 200 can perform the autofocus function and the camera shake correction function.

The driving camera module 200 can operate the lens module 220 to perform an autofocus function. The driving camera module 200 can operate the lens module 220 by the lens driving device 230 to perform an autofocus function. The substrate 250 can be powered by applying power to the winding coil of the coil part 234 disposed on the bobbin 231 to actuate the lens module 220. In this case, the winding coil of the coil portion 234 can move the bobbin 231 in the optical axis direction by electromagnetic interaction with the magnet 233. Therefore, the lens module 220 housed in the bobbin 231 can also move integrally in the optical axis direction. In this case, the substrate 250 can control the moving speed, the moving amount, and the like of the lens module 220 by controlling the intensity of the current flowing through the coil of the coil portion 234 and the like. The driving camera module 200 can move the lens module 220 in the optical axis direction according to the distance between the lens module 220 and the subject to perform the autofocus function. With the autofocus function, the driving camera module 200 can shoot an image having a high MTF value by focusing on the subject regardless of the distance of the subject.

The driving camera module 200 can operate the lens module 220 to perform an image stabilization function. The driving camera module 200 can operate the lens module 220 by the lens driving device 230 to perform the camera shake correction function. The substrate 250 can power the lens module 220 by applying power to the pattern coil of the coil part 234 disposed on the base 237. [ The pattern coil of the coil portion 234 may be electromagnetically interacted with the magnet 233 disposed on the housing 232 to move or tilt the housing 232 in the direction perpendicular to the optical axis . Accordingly, the lens module 220 housed in the bobbin 231 supported by the housing 232 can also move integrally or tilt in a direction perpendicular to the optical axis. In this case, the substrate 250 can control the moving speed, the movement amount, and the like of the lens module 220 by controlling the intensity of the current flowing through the pattern coil of the coil portion 234, and the like. The driving camera module 200 can perform the camera shake correction function by moving or tilting the lens module 220 perpendicular to the optical axis direction correspondingly to the shake of the lens module 220. [ The driving camera module 200 can correct an image blur due to an external force and photograph an image having a high MTF value through the camera shake correction function.

When the driving camera module 200 is used as the first camera module 1 in the dual camera module 2000 of the second embodiment, the cover member 210 is a "first cover member" The front side surface 113 is referred to as the "front side surface ", the lens module 220 is referred to as the" first lens module & The apparatus 230 is a "first lens driving device", the bobbin 231 is a "first bobbin", the housing 232 is a "first housing", the magnet 233 is a "first magnet" The connecting member 235 is the "first connecting member ", the supporting member 236 is the" first supporting member ", the base 237 is the " Base ", the image sensor 150 is referred to as a" first image sensor ", and the substrate 160 is referred to as a" first substrate ".

When the driving camera module 200 is used as the second camera module 2 in the dual camera module 3000 of the third embodiment, the cover member 210 is a "second cover member" The rear side surface 212 is referred to as the "rear side surface", the front side surface 113 is referred to as the "second side", the lens module 220 is referred to as the "second lens module" The device 230 is a second lens driving device, the bobbin 231 is a second bobbin, the housing 232 is a second housing, the magnet 233 is a second magnet, The connecting member 235 is referred to as a "second connecting member ", the supporting member 236 is referred to as a" second supporting member ", the base 237 is referred to as a & Base ", the image sensor 150 is referred to as a" second image sensor ", and the substrate 160 is referred to as a" second substrate ".

Hereinafter, the dual camera module 1000 of the first embodiment will be described with reference to the drawings. FIG. 9 is a perspective view showing the dual camera module according to the first embodiment, FIG. 10 is a conceptual view showing the dual camera module according to the first embodiment, and FIG. 11 is a view showing a dual camera module according to the first modification of the first embodiment. Fig. 12 is a conceptual diagram showing a dual camera module according to a second modification of the first embodiment. Fig. 13 is a conceptual diagram showing a dual camera module according to a third modification of the first embodiment. Fig. FIG. 15 is a conceptual diagram showing a dual camera module according to a fifth modification of the first embodiment, and FIG. 16 is a conceptual view showing a dual camera module according to the fifth modification example of the first embodiment. A cover member, a lens holder, and a liquid lens.

Hereinafter, the structure of the dual camera module 1000 of the first embodiment will be described. The dual camera module 1000 may include a first camera module 1, a second camera module 2, and a controller (not shown). The liquid lens camera module 100 may be used for the first and second camera modules 1 and 2. The first camera module 1 and the second camera module 2 may be disposed adjacent to each other. The first camera module 1 and the second camera module 2 may be spaced apart from each other in the forward and backward directions. In this case, the first camera module 1 may be disposed at the front side, and the second camera module 2 may be disposed at the rear side. The first camera module 1 and the second camera module 2 may be disposed opposite to each other. The first camera module 1 may be a tele camera module. The second camera module 2 may be a wide camera module. That is, the angle of view of the first camera module 1 is smaller than the angle of view of the second camera module 2. At least a part of the angle of view of the first camera module 1 may be included in the angle of view of the second camera module 2. Furthermore, the angle of view of the first camera module 1 may be entirely included in the angle of view of the second camera module 2. The first camera module 1 can photograph the first image I1. And the second camera module 2 can photograph the second image I2. At least a part of the area of the first image I1 may be included in the area of the second image I2. All of the area of the first image I1 may be included in the area of the second image I2. That is, there may be an overlap area O where the area of the first image I1 overlaps with the area of the second image I2. Since the telephoto of the first camera module 1 is smaller than the wide angle of view of the second camera module 2 in the overlap area O which is the same subject area, Resolution or resolution or MTF for the same subject area including more pixels may be high. The first image I1 and the second image I2 may be synthesized. The composite image C may have a higher resolution, resolution or MTF than the second image I2 by the first image I1. That is, it is possible to generate a composite image C of higher quality than that of a single camera module.

The control unit may be electrically connected to the first substrate 160-1 of the first camera module 1. [ At the same time, it can be electrically connected to the second substrate 160-2 of the second camera module 2. The control unit may be mounted on the first substrate 160-1 or the second substrate 160-2. As a result, the first image I1 can be received from the first image sensor 150-1 of the first camera module 1. [ At the same time, the second image sensor I2 of the second camera module 2 can receive the second image I2. The control unit may combine the first image I1 and the second image I2. In this case, an image stitching algorithm may be used.

The technical idea of the liquid lens camera module 100 may be applied to the first camera module 1. The technical idea of the liquid lens camera module 100 can be applied to the second camera module 2 in analogy.

The first camera module 1 can receive the first lens holder 120-1 inside the first cover member 110-1, which is a casing. In addition, the lens module 130-1 and the liquid lens 140-1 can be accommodated in the first lens holder 120-1. In the first embodiment, the first liquid lens 140-1 is in the form of an add-in between the lenses of the first lens module 130-1 and the first liquid lens 140-1 is of the first May be an embodiment that is added to the top of the lenses of the lens module 130-1. In this case, the first liquid lens 140-1 may be disposed above the first lens holder 120-1. In addition, the first cover member 110-1 may be hollow and the first transmission window 111-1 may be formed on the upper surface. A first lens hole 121-1 may be formed in the first lens holder 120-1 so that the lens module 130-1 and the liquid lens 140-1 may be provided. The first transmission window 111-1 and the first lens hole 121-1 may be aligned in the optical axis direction. Further, a first substrate 160-1 is disposed under the first cover member 110-1 and the first lens holder 120-1 so that the opening of the lower surface of the first cover member 110-1, It is possible to cover the hole 121-1. In addition, the first image sensor 150-1 may be mounted on the first substrate 160-1 in alignment with the optical axis. As a result, in the first camera module 1, outside light passes through the first transmission window 111-1 and passes through the first lens module 130-1 and the first liquid lens 140-1, And may be irradiated with the image sensor 150-1. The configuration of the first camera module 1 can be analogously applied to the configuration of the second camera module 2. The configurations of the second camera module 20 and the first camera module 1 can be matched.

The first camera module 1 and the second camera module 2 may be arranged close to each other in front and rear. In this case, the first side face 112-1 of the first cover member 110-1 and the second side face 113-2 of the second cover member 110-2 can face each other. The first side 112-1 and the second side 113-2 may be the side having the shortest distance between the first camera module 1 and the second camera module 2. [ In addition, the first side face 112-1 and the second side face 113-2 may be parallel to each other. The shortest distance D1 between the first camera module 1 and the second camera module 2 is the distance between the first image sensor 150-1 of the first camera module 1 and the shortest distance D1 between the first camera module 1 and the second camera module 2. [ 2 image sensor 150-2 of the image sensor 150-2. The shortest distance D1 between the first camera module 1 and the second camera module 2 is a direction in which the first camera module 1 and the second camera module 2 are disposed, May be smaller than the smaller width of the width of the first image sensor 150-1 in the first direction and the width of the second camera module 2 in the first direction. The shortest distance D1 between the first camera module 1 and the second camera module 2 is smaller than the smallest width of the widths of the first image sensor 150-1 and the second image sensor 150-2 Can be small. The shortest distance D1 between the first camera module 1 and the second camera module 2 may be 2 mm or less. The shortest distance between the first side face 112-1 and the second side face 113-2 may be 2 mm or less. That is, since the actuators of the first camera module 1 and the second camera module 2 of the first embodiment are the liquid lenses 140, as compared with the case where the VCM (Voice Coil Motor) is used as the actuator, No electromagnetic interference between modules occurs. That is, the liquid lens camera module 100 emits a small amount of electromagnetic waves. In addition, the liquid lens camera module 100 is less affected by external electromagnetic waves. Therefore, in the dual camera module 1000 of the first embodiment, the first camera module 1 and the second camera module 2 can be disposed in close proximity to each other.

Hereinafter, the structure of the dual camera module 1000 according to the first modification of the first embodiment will be described. In the dual camera module 1000 of the first modification, the first cover member 110-1 and the second cover member 110-2 can be in contact with each other. In this case, the first cover member 110-1 and the second cover member 110-2 can be bonded and bonded by an adhesive material. The first side surface 112-1 of the first cover member 110-1 and the second side surface 113-2 of the second cover member 110-2 may be in contact with each other. As a result, the gap between the first camera module 1 and the second camera module 2 is lost. Further, the shape and arrangement of the first substrate 160-1 and the second substrate 160-2 may be adjusted for a compact bonding structure of the first camera module 1 and the second camera module 2. In this case, the rear end of the first substrate 160-1 and the front end of the second substrate 160-2 may be in contact with each other. Further, the first substrate 160-1 and the second substrate 160-2 may be integrally formed. When the first substrate 160-1 and the second substrate 160-2 are integrally formed, the first image sensor 150-1 and the second image sensor 150-2 are joined to each other or integrally formed, 1 substrate 160-1 and the second substrate 160-2 may be disposed on a substrate integrally formed. When the first image sensor 150-1 and the second image sensor 150-2 are integrally formed, the width of the image sensor may be the width of the active area on the image sensor.

The structure of the dual camera module 1000 according to the second modification of the first embodiment will be described below. In the dual camera module 1000 of the second modification, the first substrate 160-1 and the second substrate 160-2 may be integrally formed. In this case, the front end of the first substrate 160-1 and the rear end of the second substrate 160-2 may be connected. That is, the front end of the first substrate 160-1 and the rear end of the second substrate 160-2 may be soldered by a connector or the like. In addition, the first substrate 160-1 and the second substrate 160-2 can be manufactured as a single part. In this case, the first substrate 160-1 and the second substrate 160-2, which are integrally formed, may be in the form of a rectangular plate having a length in the fore-and-aft direction.

The structure of the dual camera module 1000 according to the third modification of the first embodiment will be described below. In the dual camera module 1000 of the third modification, the first cover member 110-1 and the second cover member 110-2 may be integrally formed. In this case, the first cover member 110-1 and the second cover member 110-2 can share the internal space. The first side face 112-1 and the second side face 113-2 are removed and the upper face of the first cover member 110-1 and the upper face of the second cover member 110-2 are connected to each other, A cover member can be formed. The first transmission window 111-1 may be formed on the upper surface of the first and second cover members 110-1 and 110-2 integrally formed with the optical axis of the first camera module 1. [ In addition, the second transmission window 111-1 may be spaced rearward from the first transmission window 111-1 and may be aligned with the optical axis of the second camera module 2 to form the second transmission window 111-2. In addition, the first substrate 160-1 and the second substrate 160-2 may be disposed on the underside of the first and second cover members 110-1 and 110-2 integrally formed. In this case, the first substrate 160-1 and the second substrate 160-2 may be integrally formed as in the second modification. The first and second lens holders 120-1 and 120-2, the first and second lens modules 130-1 and 130-2, the first and second liquid lenses 140-1 and 140-2 and first and second image sensors 150-1 and 150-2. For this, the first and second cover members 110-1 and 110-2 integrally formed may have a hollow shape having a length in the front-rear direction. The first and second cover members 110-1 and 110-2 integrally formed may be in the form of a hollow block having a length in the front-rear direction. In this case, the shortest distance D2 between the first lens holder 120-1 and the second lens holder 120-2 may be 2 mm or less. The rear side surface of the first lens holder 120-1 and the front side surface of the second lens holder 120-2 may be disposed to face each other. In this case, the shortest distance between the rear side surface of the first lens holder 120-1 and the front side surface of the second lens holder 120-2 may be 2 mm or less. The shortest distance between the rear side surface of the first lens holder 120-1 and the front side surface of the second lens holder 120-2 is the distance between the first image sensor of the first camera and the image of at least one of the second image sensor of the second camera May be less than the width of the sensor. The shortest distance between the rear side surface of the first lens holder 120-1 and the front side surface of the second lens holder 120-2 is defined as a direction in which the first camera module 1 and the second camera module 2 are disposed, The width of the first image sensor 150-1 in the first direction and the width of the second camera module 2 in the first direction may be smaller than the smaller width. The shortest distance between the rear side surface of the first lens holder 120-1 and the front side surface of the second lens holder 120-2 is the width of the first image sensor 150-1 and the width of the second image sensor 150-2 Lt; RTI ID = 0.0 > width. ≪ / RTI >

Hereinafter, the dual camera module 1000 according to the fourth modification of the first embodiment will be described. The dual camera module 1000 of the fourth modification may have a structure in which the first and second lens holders 120-1 and 120-2 are integrally formed in the third modification. The rear end of the first lens holder 120-1 and the front end of the second lens holder 120-2 may be in contact with each other. As a result, the first and second lens holders 120-1 and 120-2 integrally formed may have a three-dimensional structure having a length in the front-rear direction. In addition, the first and second lens holders 120-1 and 120-2 integrally formed may have a rectangular parallelepiped structure having a length in the front-rear direction. In addition, the first lens hole 121-1 may be formed in the first and second lens holders 120-1 and 120-2 integrally formed with the optical axis of the first camera module 1. A second lens hole 121-2 may be formed to be spaced rearward from the first lens hole 121-1 and aligned with the optical axis of the second camera module 2. [ In this case, the shortest distance D3 between the first liquid lens 140-1 and the second liquid lens 140-2 may be 2 mm or less. The rear side surface of the first liquid lens 140-1 and the front side surface of the second liquid lens 140-2 may be opposed to each other. In this case, the shortest distance between the rear side of the first liquid lens 140-1 and the front side of the second liquid lens 140-2 may be 2 mm or less. The shortest distance between the rear side of the first liquid lens 140-1 and the front side of the second liquid lens 140-2 is determined by the distance between the first image sensor 150-1 of the first camera module 1, May be smaller than the width of at least one image sensor of the second image sensor 150-2 of the second image sensor 2-1. The shortest distance between the rear side surface of the first liquid lens 140-1 and the front side surface of the second liquid lens 140-2 is defined as a direction in which the first camera module 1 and the second camera module 2 are disposed, The width of the first image sensor 150-1 may be smaller than the width of the first image sensor 150-1 in the first direction and the width of the second image sensor 150-2 in the first direction. The shortest distance between the rear side of the first liquid lens 140-1 and the front side of the second liquid lens 140-2 is the shortest distance between the widths of the first image sensor 150-1 and the second image sensor 150-2 May be smaller than a small width.

Hereinafter, a dual camera module 1000 according to a fifth modification of the first embodiment will be described. The dual camera module 1000 according to the fifth modification is a structure in which the first and second lens holders 120-1 and 120-2 and the first and second liquid lenses 140-1 and 140-2 are integrally formed in the third modification. . The first and second lens holders 120-1 and 120-2 may be integrally formed as in the fourth modification. However, a portion of the first lens hole 121-1 and the second lens hole 121-2 may be connected to communicate with each other. That is, the first and second lens holders 120-1 and 120-2 may share an internal space in a part thereof. Accordingly, the first and second liquid lenses 140-1 and 140-2 formed integrally with the first lens hole 121-1 and the second lens hole 121-2 ) Can be inserted in an add-in form in the communicated portion. 15, the first and second liquid lenses 140-1 and 140-2 formed integrally with the first and second lens holders 120-1 and 120-2, which are integrally formed in an add-on manner, As shown in FIG. The first liquid lens 140-1 and the second liquid lens 140-2 may be integrally formed. The rear side surface of the first liquid lens 140-1 and the front side surface of the second liquid lens 140-2 are engaged with each other to form the first liquid lens 140-1 and the second liquid The lens 140-2 may be integrally formed. The rear end of the first upper cover 141-1 and the front end of the second upper cover 141-2 are integrally formed and the rear side of the first core plate 142-1 and the rear end of the second core plate 142 -2 may be integrally formed by joining together the front side of the first lower cover 149-1 and the front end of the second lower cover 149-2. As a result, the integrally formed first and second liquid lenses 140-1 and 140-2 have a shape on a straight face having a length in the longitudinal direction. In this case, the first cavity 143-1 may be positioned in alignment with the optical axis of the first camera module 1 in the first core plate 142-1. The second cavity 143-2 may be positioned in alignment with the optical axis of the second camera module 2 and spaced rearward from the first cavity 143-1 in the second core plate 142-2 . In addition, the first electrode 145-1 may form a gap with the third electrode 145-2 at a point where the first and second liquid lenses 140-1 and 140-2 are in contact with each other. The second electrode 146-1 and the fourth electrode 146-2 can form a gap. As a result, an electrical short circuit does not occur.

The modified example of the first embodiment described above can provide the dual camera module 1000 having a compact structure by integrating the components of the first camera module 1 and the second camera module 2. The distance between the first camera module 1 and the second camera module 2 can be further narrowed.

Hereinafter, the dual camera module 2000 of the second embodiment will be described with reference to the drawings. FIG. 9 is a perspective view showing the dual camera module according to the second embodiment, FIG. 17 is a conceptual view showing the dual camera module according to the second embodiment, and FIG. 18 is a view showing a dual camera module according to the first modification of the second embodiment Fig. 19 is a conceptual diagram showing a dual camera module according to a second modification of the second embodiment, and Fig. 20 is a conceptual diagram showing a dual camera module according to the third modification of the second embodiment.

The structure of the dual camera module 2000 of the second embodiment will be described below. The dual camera module 2000 may include a first camera module 1, a second camera module 2, and a controller (not shown). The driving camera module 200 may be used for the first camera module 1. The liquid lens camera module 100 may be used for the second camera module 2. [ The first camera module 1 and the second camera module 2 may be disposed adjacent to each other. The first camera module 1 and the second camera module 2 may be spaced apart from each other in the forward and backward directions. In this case, the first camera module 1 may be disposed at the front side, and the second camera module 2 may be disposed at the rear side. The first camera module 1 and the second camera module 2 may be disposed opposite to each other. The first camera module 1 may be a tele camera module and the second camera module 2 may be a wide camera module. The first camera module 1 may be a wide camera module and the second camera module 2 may be a tele camera module. That is, the angle of view of the first camera module 1 is larger or smaller than the angle of view of the second camera module 2. At least a part of the angle of view of the first camera module 1 may be included in the angle of view of the second camera module 2. Furthermore, the angle of view of the first camera module 1 may be entirely included in the angle of view of the second camera module 2. At least a part of the angle of view of the second camera module 2 may be included in the angle of view of the first camera module 1. [ Furthermore, the angle of view of the second camera module 2 may be entirely included in the angle of view of the first camera module 1. [ The first camera module 1 can photograph the first image I1. And the second camera module 2 can photograph the second image I2. At least a part of the area of the first image I1 may be included in the area of the second image I2. At least a portion of the area of the second image I2 may be included in the area of the first image I1. All of the area of the first image I1 may be included in the area of the second image I2. All of the area of the second image I2 may be included in the area of the first image I1. That is, there may be an overlap area O where the area of the first image I1 overlaps with the area of the second image I2. In the overlap area O, since the telephoto of the first camera module 1 is smaller than the wide angle of view of the second camera module 2, the first image I1 includes a higher pixel, Can be high. The first image I1 and the second image I2 may be synthesized. The composite image C is higher in resolution and MTF than the second image I2 by the first image I1. That is, it is possible to generate a composite image C of higher quality than that of a single camera module.

Since the telephoto of the second camera module 2 is smaller than the wide angle of view of the first camera module 1, the second image I2 may include a higher pixel so that resolution or resolution may be high. The second image I2 and the first image I1 may be combined. The composite image C may be higher in resolution or resolution than the first image I1 by the second image I2. That is, it is possible to generate a composite image C of higher quality than that of a single camera module.

The control unit may be electrically connected to the first substrate 250-1 of the first camera module 1. [ At the same time, it can be electrically connected to the second substrate 160-2 of the second camera module 2. The control unit may be mounted on the first substrate 250-1 or the second substrate 160-2. As a result, the first image I1 can be received from the first image sensor 240-1 of the first camera module 1. [ At the same time, the second image sensor I2 of the second camera module 2 can receive the second image I2. The control unit may combine the first image I1 and the second image I2. In this case, an image stitching algorithm may be used.

The dual camera module 1000 of the first embodiment can be applied to the dual camera module 2000 of the second embodiment. It should be noted that the second camera module 2 of the dual camera module 2000 of the second embodiment may be different from the dual camera module 1000 of the first embodiment in that the driving lens camera module 200 is used. The description of the same technical idea as that of the first embodiment will be omitted.

The technical idea of the driving camera module 100 can be applied to the first camera module 1 by analogy. The technical idea of the lens camera module 100 can be applied to the second camera module 2 by analogy. The technical idea of the second camera module of the first embodiment can be analogously applied to the second camera module 2.

The first camera module 1 may be a driving camera module 200. The first lens driving device 230-1 may be located inside the first cover member 210-1, which is an exterior material. The first lens driving apparatus 230-1 includes a first bobbin 231-1 accommodated in the first housing 232-1 and a first housing 232-1 and a first bobbin 231-1 housed in the first housing 232-1, And may include a first lens module 220-1 accommodated therein. In addition, the first bobbin 231-1 and the first housing 232-1 may be connected by a first connecting member. In addition, the first housing 232-1 may be connected to the first base 237 by a first support member. In addition, the first image sensor 240-1 may be mounted on the first substrate 250-1 in alignment with the optical axis. In addition, the first magnet 233-1 may be disposed inside the first housing 232-1. The first coil portion 234-1 may include a winding coil disposed outside the first bobbin 231-1 so as to face the first magnet 233-1 horizontally. The first coil part 234-1 may include a pattern coil disposed at a corner of the first base 237-1 so as to face the first magnet 233-1 in a direction perpendicular to the first magnet 233-1.

The first camera module 1 and the second camera module 2 may be arranged close to each other in front and rear. In this case, the first side surface 212-1 of the first cover member 210-1 and the second side surface 113-2 of the second cover member 110-2 can face each other. The first side surface 212-1 and the second side surface 113-2 may be the surfaces having the shortest distance between the first camera module 1 and the second camera module 2. [ The first side surface 212-1 and the second side surface 113-2 may be parallel to each other. The shortest distance D4 between the first camera module 1 and the second camera module 2 may be 2 mm or less. The shortest distance between the first side surface 212-1 and the second side surface 113-2 may be 2 mm or less. The shortest distance between the first side face 212-1 and the second side face 113-2 is the distance between the first image sensor 240-1 of the first camera module 1 and the second image sensor 150- 2) of the at least one image sensor. That is, since the actuator of the second camera module 2 of the second embodiment is the second liquid lens 140-2, the electromagnetic wave that influences the lens driving device 230-1 of the first camera module 1 is almost It may not occur. Further, the electromagnetic wave generated in the lens driving device 230-1 of the first camera module 1 does not affect the second liquid lens 140-2. As a result, the first camera module 1 and the second camera module 2 can be disposed in close proximity to each other.

The structure of the dual camera module 2000 according to the first modification of the second embodiment will be described below. In the dual camera module 2000 of the first modification, the first cover member 210-1 and the second cover member 110-2 can be in contact with each other. In this case, the first cover member 210-1 and the second cover member 110-2 may be bonded and bonded by an adhesive material. The first side surface 212-1 of the first cover member 210-1 and the second side surface 113-2 of the second cover member 110-2 may be in contact with each other. As a result, the gap between the first camera module 1 and the second camera module 2 is lost. Further, the shape and arrangement of the first substrate 250-1 and the second substrate 160-2 can be adjusted for a compact bonding structure of the first camera module 1 and the second camera module 2. In this case, the rear end of the first substrate 250-1 and the front end of the second substrate 160-2 may be in contact with each other. Further, the first substrate 250-1 and the second substrate 160-2 may be integrally formed.

The structure of the dual camera module 2000 according to the second modification of the first embodiment will be described below. In the dual camera module 2000 of the second modification, the first substrate 250-1 and the second substrate 160-2 may be integrally formed. In this case, the front end of the first substrate 250-1 and the rear end of the second substrate 160-2 may be connected. That is, the front end of the first substrate 250-1 and the rear end of the second substrate 160-2 may be soldered by a connector or the like. In addition, the first substrate 250-1 and the second substrate 160-2 can be manufactured as a single part. In this case, the first substrate 250-1 and the second substrate 160-2, which are integrally formed, may be in the form of a rectangular plate having a length in the fore-and-aft direction.

The structure of the dual camera module 2000 according to the third modification of the first embodiment will be described below. In the dual camera module 2000 of the third modification, the first cover member 210-1 and the second cover member 110-2 may be integrally formed. In this case, the first cover member 210-1 and the second cover member 110-2 can share the internal space. The first side surface 212-1 and the second side surface 113-2 disappear and the upper surface of the first cover member 210-1 and the upper surface of the second cover member 110-2 are connected, Can be formed. The first transmission window 211-1 may be formed on the upper surface of the integrally formed cover members 210-1 and 210-2 in alignment with the optical axis of the first camera module 1. [ Also, the second transmission window 111-1 may be spaced rearward from the first transmission window 211-1 and may be aligned with the optical axis of the second camera module 2 to form the second transmission window 111-2. In addition, the first substrate 250-1 and the second substrate 160-2 may be disposed on the underside of the integrally formed cover members 210-1 and 210-2. In this case, the first substrate 250-1 and the second substrate 160-2 may be integrally formed as in the second modification. The first lens module 220-1, the first lens driving device 230-1, the first image sensor 240-1, the first substrate (not shown) The second lens holder 120-2, the second lens module 130-2, the second liquid lens 140-2, the second image sensor 150-2, and the second substrate 160-1, -2) may be accommodated. For this, the first and second cover members 210-1 and 210-2 integrally formed may have a hollow shape having a length in the front-rear direction. The first and second cover members 210-1 and 210-2 integrally formed may be in the form of a hollow block having a length in the front-rear direction. In this case, a first supplementary cover member 260-1 may be added to protect the first lens driving device 230-1. The first supplementary cover member 260-1 can receive the lens driving apparatus 230-1 in a hollow form. The first supplemental cover member 260-1 may be in the form of a hollow rectangular parallelepiped. The first supplementary cover member 260-1 is made of a metal material and can block external electromagnetic waves. As a result, the lens driving apparatus 230-1 can be electromagnetically stabilized. In addition, it can be protected from external physical impact. In this case, the shortest distance D5 between the first supplemental cover member 260-1 and the second lens holder 120-2 may be 2 mm or less. The rear side surface of the first supplementary cover member 260-1 and the front side surface of the second lens holder 120-2 can be arranged to face each other. In this case, the shortest distance between the rear side surface of the first supplemental cover member 260-1 and the front side surface of the second lens holder 120-2 may be 2 mm or less. The shortest distance D5 between the first supplemental cover member 260-1 and the second lens holder 120-2 is set to be shorter than the shortest distance D5 between the first image sensor 240-1 and the second camera module 240-1 of the first camera module 1 2 may be smaller than the width of at least one of the image sensors of the second image sensor 150-2. The shortest distance D5 between the first supplemental cover member 260-1 and the second lens holder 120-2 is set to be shorter than the shortest distance D5 between the first camera module 1 and the second camera module 2 in the first direction The width of the first image sensor 240-1 in the first direction and the width of the second camera module 2 in the first direction may be smaller than the smaller width. The shortest distance D5 between the first supplemental cover member 260-1 and the second lens holder 120-2 is the shortest distance D5 between the widths of the first image sensor 240-1 and the second image sensor 150-2 May be smaller than a small width.

The modification of the second embodiment described above can provide the dual camera module 2000 having a compact structure by integrating the components of the first camera module 1 and the second camera module 2. The distance between the first camera module 1 and the second camera module 2 can be further narrowed.

Hereinafter, the dual camera module 3000 of the third embodiment will be described with reference to the drawings. FIG. 9 is a perspective view showing the dual camera module according to the third embodiment, FIG. 21 is a conceptual view showing the dual camera module according to the third embodiment, and FIG. 22 is a view showing a dual camera module according to the first modification of the third embodiment Fig. 23 is a conceptual diagram showing a dual camera module according to a second modification of the third embodiment, and Fig. 24 is a conceptual diagram showing a dual camera module according to the third modification of the third embodiment.

Hereinafter, the structure of the dual camera module 3000 of the third embodiment will be described. The dual camera module 3000 may include a first camera module 1, a second camera module 2, and a controller (not shown). The liquid lens camera module 100 may be used for the first camera module 1. [ The driving camera module 200 may be used for the second camera module 2. The first camera module 1 and the second camera module 2 may be disposed adjacent to each other. The first camera module 1 and the second camera module 2 may be spaced apart from each other in the forward and backward directions. In this case, the first camera module 1 may be disposed at the front side, and the second camera module 2 may be disposed at the rear side. The first camera module 1 and the second camera module 2 may be disposed opposite to each other. And may be a first camera module 1 and a tele camera module. The second camera module 2 may be a wide camera module. That is, the angle of view of the first camera module 1 is smaller than the angle of view of the second camera module 2. At least a part of the angle of view of the first camera module 1 may be included in the angle of view of the second camera module 2. Furthermore, the angle of view of the first camera module 1 may be entirely included in the angle of view of the second camera module 2. The first camera module 1 can photograph the first image I1. And the second camera module 2 can photograph the second image I2. At least a part of the area of the first image I1 may be included in the area of the second image I2. All of the area of the first image I1 may be included in the area of the second image I2. That is, there may be an overlap area O where the area of the first image I1 overlaps with the area of the second image I2. In the overlap area O, since the telephoto of the first camera module 1 is smaller than the wide angle of view of the second camera module 2, the first image I1 includes a higher pixel, Can be high. The first image I1 and the second image I2 may be synthesized. The composite image C is higher in resolution and MTF than the second image I2 by the first image I1. That is, it is possible to generate a composite image C of higher quality than that of a single camera module.

The control unit may be electrically connected to the first substrate 160-1 of the first camera module 1. [ At the same time, it can be electrically connected to the second substrate 250-2 of the second camera module 2. The control unit may be mounted on the first substrate 160-1 or the second substrate 250-2. As a result, the first image I1 can be received from the first image sensor 150-1 of the first camera module 1. [ At the same time, the second image sensor I2 of the second camera module 2 can receive the second image I2. The control unit may combine the first image I1 and the second image I2. In this case, an image stitching algorithm may be used.

The dual camera module 2000 of the second embodiment can be applied to the dual camera module 3000 of the third embodiment. In the dual camera module 3000 of the third embodiment, the first camera module 1 is the liquid lens camera module 100, the second camera module 20 is the driving camera module 200, Are arranged to be replaced with each other as compared with the dual camera module (2000). It should be noted that in the dual camera module 3000 of the third embodiment, the first camera module 1 is a narrow angle camera module and the second camera module 2 is a wide angle camera module.

The technical idea of the liquid lens camera module 100 may be applied to the first camera module 1. The technical idea of the driving camera module 200 may be applied to the second camera module 2.

Hereinafter, the structure of the dual camera module 3000 according to the first modification of the third embodiment will be described. In the dual camera module 3000 of the first modification, the first cover member 110-1 and the second cover member 210-2 can be in contact with each other. In this case, the first cover member 110-1 and the second cover member 210-2 can be bonded and bonded by an adhesive material. The first side surface 112-1 of the first cover member 110-1 and the second side surface 213-2 of the second cover member 210-2 may be in contact with each other. As a result, the gap between the first camera module 1 and the second camera module 2 is lost. Furthermore, the shape and arrangement of the first substrate 160-1 and the second substrate 250-2 can be adjusted for a compact bonding structure of the first camera module 1 and the second camera module 2. [ In this case, the rear end of the first substrate 160-1 and the front end of the second substrate 250-2 may be in contact with each other. Further, the first substrate 160-1 and the second substrate 250-2 may be integrally formed.

The structure of the dual camera module 3000 according to the second modification of the third embodiment will be described below. In the dual camera module 3000 of the second modification, the first substrate 160-1 and the second substrate 250-2 may be integrally formed. In this case, the front end of the first substrate 160-1 and the rear end of the second substrate 250-2 may be connected. That is, the front end of the first substrate 160-1 and the rear end of the second substrate 250-2 may be soldered by a connector or the like. In addition, the first substrate 160-1 and the second substrate 250-2 can be manufactured as a single component. In this case, the first substrate 160-1 and the second substrate 250-2 integrally formed may be in the form of a rectangular plate having a length in the fore-and-aft direction.

The structure of the dual camera module 2000 according to the third modification of the third embodiment will be described below. In the dual camera module 3000 of the third modification, the first cover member 110-1 and the second cover member 210-2 may be integrally formed. In this case, the first cover member 110-1 and the second cover member 210-2 can share the internal space. The first side face 112-1 and the second side face 213-2 disappear and the upper face of the first cover member 110-1 and the upper face of the second cover member 210-2 are connected to each other, Can be formed. The first transmission window 111-1 may be formed on the upper surface of the integrally formed cover members 110-1 and 210-2 in alignment with the optical axis of the first camera module 1. [ Also, the second transmission window 211-2 may be formed to be aligned with the optical axis of the second camera module 2 and spaced rearward from the first transmission window 111-1. In addition, the first substrate 160-1 and the second substrate 250-2 may be disposed on the underside of the integrally formed cover members 110-1 and 210-2. In this case, the first substrate 160-1 and the second substrate 250-2 may be integrally formed as in the second modification. The first lens holder 120-1, the first lens module 130-1, the first liquid lens 140-1, the first image sensor (not shown) The second lens driving unit 230-2, the second image sensor 240-2, the second substrate 250-2, the first substrate 160-2 and the second lens module 220-2, -2) can be accommodated. For this, the first and second cover members 110-1 and 210-2 integrally formed may have a hollow shape having a length in the front-rear direction. The first and second cover members 110-1 and 210-2 integrally formed may be in the form of a hollow block having a length in the front-rear direction. In this case, a second supplementary cover member 260-2 may be added to protect the second lens driving device 230-2. The second supplementary cover member 260-2 can receive the lens driving device 230-2 in a hollow form. The second supplementary cover member 260-2 may be in the form of a hollow rectangular parallelepiped. The second supplementary cover member 260-2 can shield electromagnetic waves from the outside with a metallic material. As a result, the lens driving apparatus 230-2 can be electromagnetically stabilized. In addition, it can be protected from external physical impact. In this case, the shortest distance D6 between the second supplementary cover member 260-2 and the first lens holder 120-1 may be 2 mm or less. The front side surface of the second supplementary cover member 260-2 and the rear side surface of the first lens holder 120-1 may be disposed opposite to each other. In this case, the shortest distance between the front side surface of the second supplementary cover member 260-2 and the front side surface of the first lens holder 120-1 may be 2 mm or less.

The modified example of the third embodiment described above can provide the dual camera module 3000 having a compact structure by integrating the components of the first camera module 1 and the second camera module 2. The distance between the first camera module 1 and the second camera module 2 can be further narrowed.

Hereinafter, operations and effects of the dual camera modules 1000, 2000, and 3000 of the first, second, and third embodiments will be described with reference to the drawings. FIG. 25 is a conceptual diagram showing the photographing with the dual camera module according to the first, second, and third embodiments, and FIG. 26 is a conceptual diagram showing a change in the MTF value when the composite image is digitally zoomed.

The subject S to be photographed by the dual camera modules 1000, 2000 and 3000 may include the main subject S1 and the main subject S1 and the background subject B different from the main subject. The distance between the first subject S1 and the dual camera modules 1000, 2000, and 3000 is longer than the distance between the second subject S2 and the dual camera modules 1000, 2000, and 3000. That is, the focus of the first and second subjects S1 and S2 can not be simultaneously adjusted by a general dual camera module.

The first camera module 1 can take a first image I1 including the first subject S1 with the narrow-angle camera module. The second camera module 2 can photograph the second image I2 including the first and second subjects S1 and S2 and the background subject B with the wide angle camera module. Since at least part or all of the angle of view of the first camera module 1 is included in the angle of view of the second camera module 2, an overlap area O between the first image I1 and the second image I2 exists .

Hereinafter, it is assumed that the angle of view of the first camera module 1 is entirely included in the angle of view of the second camera module 2, so that the first image I1 and the overlap area O coincide with each other.

The first camera module 1 and the second camera module 2 can simultaneously photograph the first and second images I1 and I2 by performing the autofocus function and / or the camera shake correction function. Therefore, the focus of the first subject S1 and the second subject S2 having different distances can be simultaneously adjusted. Furthermore, the shaking due to the external force can also be corrected. As a result, the MTF of the first image I1 and the second image I2 can be increased.

The control unit may receive the first image I1 and the second image I2 to generate a composite image C. [ In this case, an image stitching algorithm may be used. In the overlap region O of the composite image C, only the second image I2 may exist. In the overlap area O of the composite image C, the first image I1 and the second image I2 synchronized with the first image I1 may exist.

The first camera module 1 may be a narrow angle, and the second camera module 2 may be a wide angle. The resolution and MTF of the first image I1 in the overlap region O of the composite image C may be higher than that of the second camera module 2. [ As a result, a high-quality composite image C having a higher resolution and higher MTF than that taken only by the second camera module 2 can be generated. As described above, since the first camera module 1 and the second camera module 2 simultaneously perform autofocus and camera shake correction functions, the MTF of the first image I1 and the MTF of the second image I2 are Can be increased. As a result, a composite image C of the highest quality can be generated.

26 is a conceptual diagram showing a case where the composite image (C) is digitally zoomed based on the overlap area O to enlarge the magnification. The horizontal axis of the graph in Fig. 26 denotes digital zoom magnification, and the vertical axis denotes MTF. The overlap area O of the composite image C has a higher resolution and MTF than the other areas of the composite image C in which only the second image I2 is an image captured with a narrow angle. Therefore, when the magnification is enlarged by the digital zoom, the MTF of the composite image C decreases while the rate of decrease of the MTF decreases, increases, or increases as the ratio of the overlap region O increases.

In the dual camera modules 1000, 2000 and 3000 of the first, second and third embodiments, the first camera module 1 and the second camera module 2 can be disposed in close proximity or in contact with each other. Because it does not receive electromagnetic interference between the first and second camera modules 1 and 2. In addition, the first and second camera modules have a compact structure. Therefore, there is almost no time difference between the first camera module 1 and the second camera module 2. [ As a result, the synchro rate of the first image I1 and the second image I2 in the overlap area O is increased, and a high quality composite image C can be generated. Furthermore, it is easy to design the entire angle of view of the first camera module 1 so as to be included in the angle of view of the second camera module 2. Furthermore, even if the angle of view of the first camera module 1 is minimized, the angle of view of the first camera module 1 can be included in the angle of view of the second camera module 2. If the distance between the first camera module 1 and the second camera module 2 is large, such optical design will be limited.

Hereinafter, an optical apparatus to which the dual camera module according to the first, second, and third embodiments is applied will be described.

The optical device may be a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal, a PDA (personal digital assistant), a portable multimedia player (PMP) have. However, the present invention is not limited thereto, and any device for photographing an image is possible.

The optical device may include a main body (not shown), dual camera modules 1000, 2000, and 3000, and a display unit (not shown). The control unit (not shown) of the dual camera modules 1000, 2000 and 3000 may be included in the optical device.

The body can form the appearance of the optical device. The body may include, for example, a rectangular parallelepiped shape. However, the present invention is not limited thereto. Alternatively, the body may be rounded at least in part. The main body can accommodate the dual camera modules 1000, 2000, and 3000. A display section may be disposed on one side of the main body.

The dual camera modules 1000, 2000, and 3000 may be disposed in the main body. The dual camera module may be disposed on one side of the main body. At least a part of the dual camera module can be accommodated in the main body. The dual camera module can capture the image of the subject.

The display portion may be disposed in the main body. The display unit may be disposed on one side of the main body. That is, the display unit can be disposed on the same plane as the dual camera module. Alternatively, the display portion may be disposed on a side different from the side of the main body. The display portion may be disposed on a side opposite to a side where the dual camera module is disposed. The display unit can output an image photographed by the dual camera module.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1000, 2000, 3000: Dual camera module

Claims (27)

A first camera module including a first liquid lens, the first camera module capturing a first image; And
And a second camera module for capturing a second image, the second camera module including a second liquid lens,
Wherein an angle of view of the first camera module is smaller than an angle of view of the second camera module,
Wherein at least a portion of the angle of view of the first camera module is included in an angle of view of the second camera module to generate a composite image of the first image and the second image, There is an overlap region between the pixels,
When the first camera module is focused, the focal length of the first liquid lens varies depending on the distance from the subject,
And when the second camera module is focused, the second liquid lens has a focal length variable depending on a distance from the subject.
The method according to claim 1,
The focusing,
Wherein the first camera module is focused by changing the first interface of the first liquid lens and the focal length of the first liquid lens is shorter as the subject approaches the first liquid lens,
Wherein the second camera module is focused by changing the second interface of the second liquid lens and the focal length of the second liquid lens is shorter the closer the subject is to the second liquid lens.
The method according to claim 1,
Wherein the first liquid lens comprises a first cavity in which two different liquids are arranged,
The upper diameter of the first cavity is larger than the lower diameter,
The diameter of the first cavity decreases from the upper portion to the lower portion,
Wherein the second liquid lens comprises a second cavity in which two different liquids are disposed,
The upper diameter of the second cavity is larger than the lower diameter,
Wherein the diameter of the second cavity decreases from the upper portion to the lower portion.
The method according to claim 1,
Wherein the first liquid lens comprises a first cavity in which two different liquids are arranged,
The lower diameter of the first cavity is larger than the upper diameter,
The diameter of the first cavity decreases from the lower portion toward the upper portion,
Wherein the second liquid lens comprises a second cavity in which two different liquids are disposed,
The lower diameter of the second cavity is larger than the upper diameter,
Wherein the diameter of the second cavity decreases from the lower portion to the upper portion.
The method of claim 3,
When the subject is focused at a position 10 cm away from the first camera module, the shape of the first interface of the first liquid lens is convex toward the upper side of the first cavity,
Wherein the shape of the second interface of the second liquid lens is convex toward the upper side of the second cavity when the subject is focused at a position 10 cm away from the second camera module.
5. The method of claim 4,
When the subject is focused at a position 10 cm away from the first camera module, the shape of the first interface of the first liquid lens is convex downward of the first cavity,
Wherein the shape of the second interface of the second liquid lens is convex downward of the second cavity when the subject is focused at a position 10 cm away from the second camera module.
The method according to claim 1,
When the subject is focused at a position 10 cm away from the first camera module, the curvature of the first interface is less than the curvature of the second interface when the subject is at a distance of 10 cm from the second camera module Large dual camera module.
The method according to claim 1,
Wherein the first camera module further comprises a first lens holder,
Wherein the first lens holder includes a first lens disposed at the top of the first lens holder,
Wherein the second camera module further comprises a second lens holder,
The second lens holder includes a second lens disposed at the uppermost portion in the second lens holder,
Wherein the diameter of the first lens is smaller than the diameter of the second lens.
The method according to claim 1,
Wherein the first camera module includes a first cover member that receives the first liquid lens and the second camera module includes a second cover member that accommodates the second liquid lens,
Wherein the first cover member includes a first top plate that forms an upper portion of the first cover member, and a first side plate that forms a side surface, the second cover member includes a first cover plate, And a second side plate that forms a side surface, wherein the widths of the first top plate and the second top plate are equal to each other.
The method according to claim 1,
Wherein the width of the first top plate is smaller than the width of the second top plate.
The method according to claim 1,
Wherein the maximum diameter of the cavity formed in the first liquid lens is smaller than the maximum diameter of the cavity formed in the second liquid lens.
The method according to claim 1,
Wherein the minimum diameter of the cavity formed in the first liquid lens is smaller than the minimum diameter of the cavity formed in the second liquid lens.
The method according to claim 1,
Wherein the focal length of the second camera module is smaller than the focal length of the first camera module.
The method according to claim 1,
The first interface is changed to adjust the MTF value of the first image,
Wherein the second interface is changed to adjust the MTF value of the second image.
The method according to claim 1,
Wherein the first camera module and the second camera module simultaneously perform autofocusing.
The method according to claim 1,
And the first interface of the first liquid lens is changed, so that the camera shake correction can be further performed.
The method according to claim 1,
And the second interface of the second liquid lens is changed to perform the camera shake correction.
A first camera module including a first liquid lens and capturing a first image;
A second camera module including a second liquid lens and capturing a second image; And
And a control unit for synthesizing the first image and the second image to generate a composite image,
Wherein an angle of view of the first camera module is smaller than an angle of view of the second camera module,
Wherein at least a portion of the angle of view of the first camera module is included in an angle of view of the second camera module to generate a composite image of the first image and the second image, There is an overlap region between the pixels,
When the first camera module is focused, the focal length of the first liquid lens varies depending on the distance from the subject,
When the second camera module is focused, the focal length of the second liquid lens varies depending on the distance from the subject,
When the magnification is enlarged by digitally zooming the composite image around the overlap region,
Wherein resolution of the composite image is reduced and then increased.
A first camera module for photographing a first image, the first camera module including a first lens module that is operated by a first lens driving device; And
And a second camera module including a second liquid lens and capturing a second image,
Wherein an angle of view of the first camera module is smaller than an angle of view of the second camera module,
Wherein at least a portion of the angle of view of the first camera module is included in an angle of view of the second camera module to generate a composite image of the first image and the second image, There is an overlap region between the pixels,
The first camera module may be configured such that the first lens module is movable in an optical axis direction to perform an autofocus function,
Wherein the second camera module has a focal length variable according to a distance between the second liquid lens and a subject when the second camera module is focused.
20. The method of claim 19,
Wherein the focal length of the second liquid lens is shorter as the subject is closer to the second liquid lens.
20. The method of claim 19,
Wherein the first camera module and the second camera module simultaneously perform an autofocus function.
A first camera module for photographing a first image, the first camera module including a first lens module that is operated by a first lens driving device;
A second camera module including a second liquid lens and capturing a second image; And
And a control unit for synthesizing the first image and the second image to generate a composite image,
Wherein an angle of view of the first camera module is smaller than an angle of view of the second camera module,
Wherein at least a portion of the angle of view of the first camera module is included in an angle of view of the second camera module to generate a composite image of the first image and the second image, There is an overlap region between the pixels,
Wherein when the first camera module is focused, the first lens module moves in the optical axis direction to perform focusing,
When the second camera module is focused, the focal length of the second liquid lens varies depending on the distance from the subject,
Wherein, when the control unit digitally zooms the composite image around the overlap region to enlarge the magnification, the resolution of the composite image decreases and then rises.
A first camera module for photographing a first image, the first camera module including a first lens module that is operated by a first lens driving device; And
And a second camera module including a second liquid lens and capturing a second image,
The angle of view of the second camera module is smaller than the angle of view of the first camera module,
Wherein at least a portion of the angle of view of the second camera module is included in an angle of view of the first camera module to generate a composite image of the combined second image and the first image, There is an overlap region between the pixels,
The first camera module may be configured such that the first lens module is movable in an optical axis direction to perform an autofocus function,
Wherein the focal length of the second camera module is varied according to the distance between the second liquid lens and the subject when the second camera module is focused.
23. The method of claim 22,
The first camera module includes a first cover member for accommodating the first lens module
The second camera module includes a second cover member for receiving the second liquid lens
The first cover member includes a first top plate that forms an upper portion of the first cover member and a first side plate that forms a side surface
The second cover member includes a second top plate forming an upper portion of the second cover member and a second side plate forming a side surface
Wherein the width of the first top plate and the width of the second top plate are different from each other.
25. The method of claim 24,
Wherein the width of the first top plate is smaller than the width of the second top plate.
24. The method of claim 23,
The first camera module includes a first cover member for accommodating the first lens module
The second camera module includes a second cover member for receiving the second liquid lens
The first cover member includes a first top plate that forms an upper portion of the first cover member and a first side plate that forms a side surface
The second cover member includes a second top plate forming an upper portion of the second cover member and a second side plate forming a side surface
Wherein the width of the first top plate and the width of the second top plate are different from each other.
27. The method of claim 26,
Wherein the width of the first top plate is larger than the width of the second top plate.

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