KR102660803B1 - Dual camera module and optical device - Google Patents

Abstract

This embodiment includes a first camera module that includes a first liquid lens and captures a first image; It includes a second liquid lens, and includes a second camera module for photographing 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 at least a portion of the angle of view of the first camera module is included in the angle of view of the second camera module, and an overlap area exists between the first image and the second image to generate a composite image combining the first image and the second image, and the first camera When the module is focused, the first liquid lens has a variable focal length depending on the distance to the subject, and when the second camera module is focused, the second liquid lens is a dual camera whose focal length varies depending on the distance to the subject. It's about modules.

Description

Dual camera module and optical device {DUAL CAMERA MODULE AND OPTICAL DEVICE}

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

The content described below only provides background information for this embodiment and does not describe prior art.

As various types of portable terminals become widespread and wireless Internet services become commercialized, consumer demands related to portable terminals are also diversifying, and various types of additional devices are being installed on portable terminals.

Among them, a representative example is a camera module that captures images or videos. The camera module can perform an auto focus (AF) function, which automatically adjusts focus depending on the distance to the subject, and an optical image stabilization (OIS) function, which corrects the user's hand shake when shooting.

A typical camera module performs autofocus and image stabilization functions through a lens driving device. The lens driving device is a device that operates the lens module by electromagnetic interaction between a coil and a magnet and may be referred to as a voice coil motor (VCM).

Meanwhile, a dual camera module includes two single camera modules and is used to create a composite image with high resolution or high resolution and high MTF (modulation transfer function) by combining two or more images taken by each single camera module. It is a camera module.

However, in existing dual camera modules, there was a problem of electromagnetic interference between lens driving devices.

Additionally, the lens driving device is an assembly of multiple parts and takes up a lot of installation space. Therefore, there are design difficulties in placing single camera modules in close proximity.

Furthermore, in order to prevent this, when only one single camera module uses a lens driving device, the other single camera module cannot perform an autofocus function, etc., leading to a problem that the quality of the composite image is lowered.

This embodiment is a dual camera that includes a single camera module that is capable of independently performing autofocus and image stabilization functions without receiving electromagnetic interference even when placed in close proximity, has a compact structure, and has a high MTF of the composite image. We would like to provide a module.

The dual camera module of this embodiment includes a first camera module including a first liquid lens and capturing a first image; It includes a second liquid lens, and includes a second camera module for photographing 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 at least a portion of the angle of view of the first camera module is included in the angle of view of the second camera module, and an overlap area exists between the first image and the second image to generate a composite image combining the first image and the second image, and the first camera When the module is focused, the focal length of the first liquid lens may vary depending on the distance to the subject, and when the second camera module is focused, the focal length of the second liquid lens may vary depending on the distance to the subject. .

In the focusing, the first camera module is focused by changing the first interface of the first liquid lens, the focal length of the first liquid lens becomes shorter as the subject approaches the first liquid lens, and the second The camera module is focused by changing the second interface of the second liquid lens, and the focal length of the second liquid lens may become shorter as the subject approaches the second liquid lens.

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, and the diameter of the first cavity becomes smaller from the top to the bottom, 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 become smaller from the top to the bottom.

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, and the diameter of the first cavity becomes smaller from the bottom to the top, 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 become smaller from the bottom to the top.

When the subject is focused at a distance of 10cm from the first camera module, the shape of the first interface of the first liquid lens is convex toward the top of the first cavity, and the subject is focused from the second camera module. 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 top 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 toward the bottom of the first cavity, and the subject is focused from the second camera module. 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 bottom of the second cavity.

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

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

The first camera module includes a first cover member accommodating the first liquid lens, and the second camera module includes a second cover member accommodating the second liquid lens, and the first cover member It includes a first top plate forming an upper part of the first cover member and a first side plate forming a side surface, and the second cover member includes a second upper surface plate forming an upper part and a side surface of the second cover member. It includes a second side plate, and the areas of the first top plate and the second top plate may be the same.

The area of the first upper surface plate may be narrower than the area of the second upper surface 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 change to adjust the MTF value of the first image, and the second interface may change to adjust the MTF value of the second image.

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

The first and second camera modules can perform auto focusing simultaneously.

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

Hand shake correction can be performed by changing the second interface of the second liquid lens.

The optical device of this embodiment includes 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 a control unit that combines the first image and the second image to generate a composite 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 portion of the angle of view of the first camera module is included in the angle of view of the second camera module, and an overlap area exists between the first image and the second image to generate a composite image combining the first image and the second image, and the first camera When the module is focused, the focal length of the first liquid lens varies depending on the distance to the subject, and when the second camera module is focused, the focal length of the second liquid lens varies depending on the distance to the subject, and the control unit When the composite image is magnified by digitally zooming around the overlap area, the resolution of the composite image may decrease and then increase.

The dual camera module of this embodiment includes a first lens module operated by a first lens driving device and a first camera module that captures a first image; A second camera module including a second liquid lens and taking 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 at least a portion of the angle of view of the first camera module is Included in the angle of view of the second camera module, an overlap area exists between the first image and the second image to generate a composite image combining the first image and the second image, and the first camera The module performs an autofocus function by moving the first lens module in the direction of the optical axis, and the focal length of the second camera module can be varied depending on the distance between the second liquid lens and the subject when focusing.

The focal length of the second liquid lens may become shorter as the subject approaches the second liquid lens.

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

a first camera module including a first lens module driven by a first lens driving device and capturing a first image; a second camera module including a second liquid lens and capturing a second image; and a control unit that combines the first image and the second image to generate a composite 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 portion of the angle of view of the first camera module is included in the angle of view of the second camera module, and an overlap area exists between the first image and the second image to generate a composite image combining the first image and the second image, and the first image is 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 second liquid lens has a variable focal length depending on the distance to the subject, and the control unit When the composite image is digitally zoomed around the overlap area to increase magnification, the resolution of the composite image may decrease and then increase.

a first camera module including a first lens module driven by a first lens driving device and capturing a first image; A second camera module including a second liquid lens and capturing a second image, wherein the angle of view of the second camera module is smaller than the angle of view of the first camera module, and at least a portion of the angle of view of the second camera module is Included in the angle of view of the first camera module, an overlap area exists between the second image and the first image to generate a composite image combining the second image and the first image, and the first camera In the module, the first lens module moves in the direction of the optical axis to perform an autofocus function, and the focal length of the second camera module can be varied depending on the distance between the second liquid lens and the subject when focusing.

The first camera module includes a first cover member accommodating the first lens module, and the second camera module includes a second cover member accommodating the second liquid lens, and the first cover member includes the It includes a first top plate forming an upper part of the first cover member and a first side plate forming a side surface, and the second cover member forms a second upper surface plate forming an upper part of the second cover member and a side surface. It includes a second side plate, and the areas of the first upper surface plate and the second upper surface plate may be different from each other.

The area of the first upper surface plate may be narrower than the area of the second upper surface plate.

The first camera module includes a first cover member accommodating the first lens module, and the second camera module includes a second cover member accommodating the second liquid lens, and the first cover member includes the It includes a first top plate forming an upper part of the first cover member and a first side plate forming a side surface, and the second cover member forms a second upper surface plate forming an upper part of the second cover member and a side surface. It includes a second side plate, and the areas of the first upper surface plate and the second upper surface plate may be different from each other.

The area of the first upper surface plate may be wider than the area of the second upper surface plate.

The dual camera module of this embodiment is a camera module that includes two single camera modules and generates a composite image with high resolution, high resolution, or high MTF by synthesizing two or more images captured by each single camera module. Therefore, each single camera module is required to be placed in close proximity. This is because the parallax increases as the single camera modules are spaced apart, making image matching difficult.

In the dual camera module of this embodiment, a liquid lens camera module is used in at least one of the first camera module and the second camera module, so the autofocus function and the image stabilization function can be performed without mutual electromagnetic interference, and further, the camera module can be placed in close proximity. You can. Furthermore, it has a compact structure by minimizing the parts that make up the dual camera module.

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

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. When assigning reference numerals to components in each drawing, identical components are indicated with the same reference numerals as much as possible, even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected, coupled, or connected to that other component, but that component and that other component It should be understood that another component may be “connected,” “coupled,” or “connected” between elements.

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

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

The optical image stabilization (OIS) function, used below, changes the interface of the liquid lens to offset vibration (movement) caused by external force or moves the lens module in a direction perpendicular to the optical axis by a lens driving device. It is defined as the function of moving or tilting.

Hereinafter, the x-axis direction shown in the drawing is defined as the front-back direction. In this case, the direction of the arrow on the x-axis is backward. Define the y-axis direction shown in the drawing as left and right. In this case, the direction of the arrow on the y-axis is to the right. The z-axis direction shown in the drawing is defined as the up and down direction. In this case, the arrow direction of the z-axis is downward. The z-axis direction can be used interchangeably 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 the second camera module 2000 of the second embodiment of the present invention. 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. Figure 1 is a perspective view showing a liquid lens camera module, Figure 2 is an exploded perspective view showing the liquid lens camera module, Figure 3 is an exploded perspective view showing the liquid lens, and Figure 4 is a cross-sectional view showing the liquid lens.

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 metal. In this case, the cover member 110 can block electromagnetic interference (EMI). That is, the cover member 110 can block external electromagnetic waves from flowing inside. Furthermore, electromagnetic waves generated inside the cover member 110 can be blocked from being emitted to the outside.

The cover member 110 may be in the shape of a hollow block. The cover member 110 may include a rear side 112. The rear side 112 may be a side disposed at the rear of the cover member 110. The cover member 110 may include a front side 113. The front side 113 may be a side disposed in front of the cover member 110. However, the shape of the cover member 110 is not limited to this, and any shape that can cover the lens holder 120 can be applied.

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 plate may include a front side 113 or a rear side 112. The front side 113 and the rear side 112 may face each other or be formed in parallel. The top plate or side plate may be capable of being combined with the lens holder 120 or the substrate 170.

A transparent window 111 may be formed on the upper surface of the cover member 110. The transmission window 111 has a circular opening and can be aligned with the optical axis of the liquid lens 140, which will be described later. As a result, the light reflected from the subject can pass through the transmission window 111 and move to the lens 130 and the liquid lens 140. The lower surface of the cover member 110 may be open to form an opening. A lens holder 120 may be located inside the cover member 110. A lens holder 120 may be accommodated inside the cover member 110. The cover member 110 may be supported by a substrate 170, which will be described later. The cover member 110 may be fixed by combining with the substrate 170. In this case, the substrate 170 may close the opening on the lower side 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 with a lens hole 121 formed in the center. Lens holder 120 may include at least one lens. The lens hole 121 may be formed by penetrating the lens holder 120 in the optical axis direction. A lens module 130 and/or a liquid lens 140 may be accommodated in the lens hole 121. The lens module 130 may include at least one lens. However, the shape of the first lens holder 120 is not limited to this, and any shape that can accommodate the lens 130 and/or the liquid lens 140 can be applied. In one embodiment, the lens module 130 may accommodate a lens barrel including at least one lens. Additionally, the lens module 130 and the lens barrel are formed as one piece, so that at least one lens can be placed or coupled to the lens module 130 without the lens barrel.

The liquid lens 140 is a variable focus lens in which the shape of a liquid or an interface between two types of liquids changes due to an electrowetting phenomenon. The liquid lens 140 may be accommodated in the lens hole 121 inside the lens holder 120 or may be placed at the top or bottom of the lens holder 120. The liquid lens 140 can be accommodated by being coupled to the lens holder 120. The liquid lens 140 may be placed in the middle of the lens hole 120. That is, the liquid lens 140 may be inserted between a plurality of lenses of the lens module 130. The liquid lens 140 may be placed on top of the lens holder 120. That is, the liquid lens 140 may be placed on top of the plurality of lenses of the lens module 130. The liquid lens 140 may be connected to the substrate 160. Therefore, the liquid lens 140 can receive 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 placed on top of the core plate 142. The upper cover 141 can be combined 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. Therefore, the upper cover 141 can close the upper part of the cavity 143. Additionally, an electrode portion 144 and/or an 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 in the center of the lower surface of the upper cover 141. The groove of the upper cover 141 may communicate with the cavity 143. As a result, the first liquid L1 disposed at the top of the cavity 143 can be filled in the groove of the upper cover 141.

The core plate 142 may be in the form of a plate with a thickness and a cavity 143 may be formed in the center. A cavity 143 may be formed in the core plate 142 on the optical axis. The cavity 143 may be located on the optical path of the liquid lens camera module 100. The cavity 143 may penetrate the core plate 142 vertically. 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. Additionally, since the cavity 143 is formed in the opposite direction, the horizontal cross-sectional area of the cavity 143 may become narrower toward the top. The cavity 143 can accommodate the first liquid (L1) and the second liquid (L2). 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 non-conductive liquid. The second liquid (L2) may be 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 to each other. Therefore, the influence of gravity on the first liquid (L1) and the second liquid (L2) in the cavity 143 may be minimal. Furthermore, in the cavity 143, the surface tension of the first liquid (L1) and the second liquid (L2) may dominate gravity. The first liquid (L1) and the second liquid (L2) may be in contact with each other to form a first interface (A). The first liquid (L1) may be located on top of the second liquid (L2). That is, the first liquid L1 and the second liquid L2 may be separated up and down to form the first interface 156.

The electrode unit 144 may be disposed on the core plate 142. At least a portion of the electrode portion 144 may be disposed on the core plate 142. The electrode portion 144 may be an electrode material coated on the core plate 142. The electrode unit 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 and disposed around the cavity 143 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 first electrode 145 and the second electrode 146 may not be in contact with each other. As a result, a 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 as one electrically connected sector. Additionally, the first electrode 145 may be formed separately into a plurality of sectors. The first electrode 145 and the second electrode 146 may be 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 forward, backward, left and right with respect to the center of the core plate 142. The second electrode 146 may be formed separately into one or two or more sectors. The second electrode 146 can be divided into four sectors. The second electrode 146 may be divided into four sectors that are symmetrical forward, backward, left and right with respect to the center of the core plate 142. The first and second electrodes 145 and 146 may be electrically connected to the substrate 160. Power may be supplied so that the polarity of the first and second electrodes 145 and 146 is reversed. Additionally, power may be supplied to only some sectors of the first and second electrodes 145 and 146. Additionally, 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 laminated on the electrode portion 144. The insulating layer 148 may be laminated 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 upper 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 upper surface of the core plate 142 and be laminated on 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 laminated on the second electrode 146 along the inner surface of the cavity 143. The insulating layer 148 may be disposed at a point opposite the cavity 143 on the upper surface of the lower cover 149. The insulating layer 148 may be a coated insulating material. The insulating layer 148 may be integrally laminated on the first and second electrodes 146 and disposed on the lower cover 149. Therefore, the insulating layer 148 has a basket-like shape and can accommodate the first liquid (L1) and the second liquid (L2). Furthermore, 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 laminated on the upper surface of the core plate 142 does not extend radially outward beyond the groove formed in the above-described upper cover 141, the first liquid L1 filled in the groove of the upper cover 141 is It may be in contact with the first electrode 145. As a result, when power is applied to the electrode unit 144, an electrowetting phenomenon 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 may change.

The lower cover 149 may be placed below the core plate 142. The lower cover 149 can be combined with the core plate 142. The upper surface of the lower cover 149 and the lower surface of the core plate 142 may be in contact with or combined 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, or contact. Therefore, the lower cover 149 can close the lower part 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 placed 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 placed on the optical axis of the liquid lens 140. Therefore, the image sensor 150 can acquire light that has passed through the liquid lens 140. The image sensor 160 can convert the irradiated light into an image. An image can be a broad concept that includes not only digital signals converted from optical signals, but also the results of these digital signals output as visible light through a display device. The image sensor 150 may be a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, or a CID. However, the type of image sensor 150 is not limited to this.

The substrate 160 may be a printed circuit board (PCB). The substrate 160 may be placed below the cover member 110. In this case, the substrate 160 may close the bottom opening of the cover member 110. Additionally, the substrate 160 may 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 a connection 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 unit 144. An image sensor 150 may be mounted on the substrate 160. In this case, the substrate 160 can receive the image generated by 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 may perform an autofocus function and/or an image stabilization function.

The liquid lens camera module 100 can perform an autofocus function by changing the shape of the interface (A). The substrate 160 can change the shape of the interface A by applying power to the electrode unit 144. When 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 an electrowetting phenomenon. In this case, the curvature of the interface (A) may change. Furthermore, the curvature of the interface (A) can be adjusted by adjusting the intensity of the applied power. If 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 an autofocus function by changing the focal length of the liquid lens 140 in response to the distance between the liquid lens 140 and the subject. Focal distance may be defined as Effective Focal Length, which is the distance from the optical center (second main point) of the liquid lens 140 to the focal point (image sensor 150). The focal length of the liquid lens 140 may become shorter as the subject approaches the liquid lens 140. Through the autofocus function, the liquid lens camera module 100 can capture images with a high MTF value by focusing regardless of the separation distance of the subject.

The liquid lens camera module 100 can perform an image stabilization function by changing the shape of the interface A. The substrate 160 can change the shape of the interface A by applying power to the electrode unit 144. When power is applied to the first electrode 145 at a different voltage for each sector, and to the second electrode 146 at an equal voltage to all sectors, the interface A can change due to the electrowetting phenomenon. there is. In this case, the center of the interface A may be deflected perpendicular to the optical axis direction. In other words, the interface A may exhibit a tilting effect. Furthermore, the degree to which the center of the interface (A) is deflected can be adjusted by adjusting the intensity of the applied voltage. As a result, shaking of the liquid lens camera module 100 can be corrected. Through the hand shake correction function, the liquid lens camera module 100 can capture images with a high MTF value by compensating for shake caused by external forces.

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 referred to as a “first cover member”, The transmission window 111 is referred to as the “first transmission window,” the rear side 112 is referred to as the “first side,” the front side 113 is referred to as the “front side,” and the lens holder 120 is referred to as the “first lens holder.” ", the lens hole 121 is referred to as the "first lens hole", the lens module 130 is referred to as the "first lens module", the liquid lens 140 is referred to as the "first liquid lens", and the upper cover 141 is the “first upper cover”, the core plate 142 is the “first core plate”, the cavity 143 is the “first cavity”, the electrode portion 144 is the “first electrode portion”, and the The first and second electrodes 145 and 146 are the same, the gap 147 is the “first gap”, the insulating layer 148 is the “first insulating layer”, and the first and second liquids (L1 and L2) Likewise, the interface A is the “first interface,” the lower cover 149 is the “first lower cover,” the image sensor 150 is the “first image sensor,” and the substrate 160 is the “first image sensor.” It is referred to as “1 board”.

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 referred to as a “second cover member”, The transmission window 111 is referred to as the “second transmission window,” the rear side 112 is referred to as the “rear side,” the front side 113 is referred to as the “second front side,” and the lens holder 120 is referred to as the “second lens.” Holder", lens hole 121 as "second lens hole", lens module 130 as "second lens module", liquid lens 140 as "second liquid lens", top cover (141) ) is the “second upper cover”, the core plate 142 is the “second core plate”, the cavity 143 is the “second cavity”, the electrode unit 144 is the “second electrode unit”, The first electrode 145 is referred to as the “third electrode,” the second electrode 146 is referred to as the “fourth electrode,” the gap 147 is referred to as the “second gap,” and the insulating layer 148 is referred to as the “second insulation.” Layer", the first liquid (L1) is "third liquid", the second liquid (L2) is "fourth liquid", the interface (A) is "second interface", and the lower cover 149 is " The image sensor 150 is referred to as the “second lower cover”, the image sensor 150 is referred to as the “second image sensor”, and the substrate 160 is referred to as the “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 the second camera module 2 of the dual camera module 3000 of the third embodiment of the present invention. ) can be used. Figure 5 is a perspective view showing the driving camera module, Figure 6 is an exploded perspective view showing the driving camera module, Figure 7 is a conceptual diagram showing the autofocus function of the driving camera module, and Figure 8 shows the hand shake correction function of the driving camera module. It is a conceptual diagram, and Figure 9 is a perspective view showing the dual camera module of the first, second, and third embodiments.

Hereinafter, the structure of the driving 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 metal. In this case, the cover member 210 can block electromagnetic interference (EMI). That is, the cover member 210 can block external electromagnetic waves from flowing inside. Furthermore, electromagnetic waves generated inside the cover member 210 can be blocked from being emitted to the outside.

However, if the cover member 210 is made of a metal material, it may react with the magnet 233 of the housing 232, which will be described later, and interfere with the operation of the housing 232. Therefore, the cover member 210 may be made of a non-metallic material. In this case, the cover member 210 may not perform the function of blocking electromagnetic interference (EMI).

The cover member 210 may be in the shape of a hollow block. The cover member 210 may include a rear side 212. The rear side 212 may be a side disposed at the rear of the cover member 210. The cover member 210 may include a front side 213. The front side 213 may be a side disposed in front of the cover member 210. However, the shape of the cover member 210 is not limited to this, and any shape that can cover the lens driving device 230 can be applied.

A transparent window 211 may be formed on the upper surface of the cover member 210. The transmission window 211 has a circular opening and can be aligned with the optical axis of the lens module 220, which will be described later. As a result, the light reflected from the subject can pass through the transmission window 211 and move to the lens module 220. The lower surface of the cover member 210 may be open to form an opening. A lens driving device 230 may be located inside the cover member 210. A lens driving device 230 may be accommodated inside the cover member 210. The cover member 210 may be supported by a substrate 250, which will be described later. The cover member 210 may be coupled and fixed to the substrate 250. In this case, the substrate 250 may close the opening on the lower side of the cover member 210.

The lens module 220 may be a concept that includes 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, bonding methods such as adhesive 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 optical axis direction, move in a direction perpendicular to the optical axis, or tilt.

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

The bobbin 231 may be accommodated inside the housing 232. The bobbin 231 may be connected to the housing 232 and the connecting member 235. In this case, the bobbin 231 may be elastically supported. A lens module 220 may be accommodated inside the bobbin 231. The bobbin 231 may be hollow. The bobbin 231 may have a hollow cylindrical shape. The winding coil of the coil unit 234 may be disposed at the center of the side of the bobbin 231. A connecting member 235 may be disposed at the top or bottom of the bobbin 231. In this case, the bobbin 231 may be elastically supported so as to be movable in the optical axis direction.

The housing 232 may be accommodated inside the cover member 210. The housing 232 can accommodate 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 may be elastically supported. Housing 232 may be hollow. The housing 232 may be in the form of a hollow block with a hole formed in the optical axis direction. A magnet 233 may be placed along the inner surface of the hole of the housing 232. In this case, the magnet 233 may be arranged horizontally to correspond to (oppose) the winding coil of the coil portion 234 disposed on the bobbin 231. A connecting member 235 may be disposed at the top or bottom of the housing 232. A support member 236 in the form of a wire may be disposed at a corner of the housing 232. In this case, the housing 232 may be elastically supported to move or tilt in a direction perpendicular to the optical axis.

The coil unit 234 may include two coils. The coil unit 234 may include a winding coil disposed on the side of the bobbin 231. The coil unit 234 may include a pattern coil disposed on the base 237. The winding coil of the coil unit 234 may be wound along the side surface of the bobbin 231. The pattern coil of the coil portion 234 may be formed at a corner of the upper surface of the base 237. The pattern coil of the coil unit 234 may be arranged to correspond (oppose) the magnet 233 perpendicularly. The coil unit 234 may be electrically connected to the substrate 250. The coil unit 234 may interact electromagnetically with the magnet 233.

The connecting member 235 may 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, so that one side connects the bobbin 231 and the upper end of the housing 232, and the other side connects the bobbin 231 and the lower end of the housing 232. The bobbin 231 can be elastically moved by the connecting member 235.

The support member 236 may connect the base 237 and the housing 232. In this case, the housing 232 may be supported with a vertical gap from the base 237. 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. Additionally, the support member 236 may be arranged and fixed along the vertical edge of the housing 232 in the longitudinal direction. As a result, the housing 232 can move elastically.

The base 237 may form the bottom of the lens driving device 230. The base 237 may be in the shape of a square plate. The base 237 may be coupled to the lower end of the cover member 210. In this case, the base 237 may cover the lower opening of the cover member 210. However, a hole aligned with the optical axis may be formed in the base 237. As a result, the light passing 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 a corner portion of the base 237. The base 237 may be fixed and supported on the substrate 250.

The image sensor 240 may be placed on the upper surface of the substrate 250. The image sensor 240 may be mounted on the board 250. The image sensor 240 may be placed on the optical axis of the lens module 220. Therefore, the image sensor 240 can acquire light that has passed through the lens module 220. The image sensor 240 can convert the irradiated light into an image. An image can be a broad concept that includes not only digital signals converted from optical signals, but also the results of these digital signals output as visible light through a display device. The image sensor 240 may be a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, or a CID. However, the type of image sensor 160 is not limited to this.

The substrate 250 may be a printed circuit board (PCB). The substrate 250 may be placed below the cover member 210. In this case, the substrate 250 may close the bottom opening of the cover member 210. Additionally, the substrate 250 may 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 may support the base 237. The substrate 250 may be electrically connected to the coil portion 234. In this case, the substrate 250 can apply power to the coil unit 234. In this case, the substrate 250 can control the direction, wavelength, and intensity of the current flowing through the coil unit 234. An image sensor 240 may be mounted on the substrate 250. In this case, the substrate 250 can receive the image generated by the image sensor 240.

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

The driving camera module 200 can perform an autofocus function and an image stabilization function.

The driving camera module 200 can operate the lens module 220 to perform an autofocus function. The driving camera module 200 can perform an autofocus function by operating the lens module 220 using the lens driving device 230. The substrate 250 may operate the lens module 220 by applying power to the winding coil of the coil unit 234 disposed on the bobbin 231. In this case, the winding coil of the coil unit 234 may interact electromagnetically with the magnet 233 to move the bobbin 231 in the optical axis direction. Accordingly, the lens module 220 accommodated in the bobbin 231 can also move in the optical axis direction as one unit. In this case, the substrate 250 can adjust the operating speed or movement amount of the lens module 220 by controlling the intensity of the current flowing through the winding coil of the coil unit 234. The driving camera module 200 may perform an autofocus function by moving the lens module 220 in the optical axis direction in response to the distance between the lens module 220 and the subject. Through the autofocus function, the driving camera module 200 can capture images with a high MTF value by focusing regardless of the separation distance of the subject.

The driving camera module 200 may operate the lens module 220 to perform an image stabilization function. The driving camera module 200 can perform an image stabilization function by operating the lens module 220 using the lens driving device 230. The substrate 250 can operate the lens module 220 by applying power to the pattern coil of the coil unit 234 disposed on the base 237. In this case, the pattern coil of the coil unit 234 electromagnetically interacts with the magnet 233 disposed in the housing 232 to move or tilt the housing 232 in a direction perpendicular to the optical axis. . Accordingly, the lens module 220 accommodated in the bobbin 231 supported by the housing 232 can also be moved or tilted in a direction perpendicular to the optical axis. In this case, the substrate 250 can adjust the operating speed or movement amount of the lens module 220 by controlling the intensity of the current flowing through the pattern coil of the coil unit 234. The driving camera module 200 may perform a camera shake correction function by moving or tilting the lens module 220 perpendicular to the optical axis direction in response to shaking of the lens module 220. Through the hand shake correction function, the driving camera module 200 can capture images with a high MTF value by compensating for shake caused by external forces.

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 referred to as the “first cover member” and the transmission window 211 is the “first transmission window”, the rear side 212 is the “first side”, the front side 113 is the “front side”, the lens module 220 is the “first lens module”, and the lens drive The device 230 is referred to as the “first lens driving device,” the bobbin 231 is referred to as the “first bobbin,” the housing 232 is referred to as the “first housing,” and the magnet 233 is referred to as the “first magnet.” The coil portion 234 is referred to as the “first coil portion,” the connection member 235 is referred to as the “first connection member,” the support member 236 is referred to as the “first support member,” and the base 237 is referred to as the “first support member.” The image sensor 150 is referred to as the “base”, the image sensor 150 is referred to as the “first image sensor”, and the substrate 160 is referred to as the “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” and the transmission window 211 is the "second transmission window", the rear side 212 is the "rear side", the front side 113 is the "second side", the lens module 220 is the "second lens module", and the lens drive The device 230 is referred to as the “second lens driving device,” the bobbin 231 is referred to as the “second bobbin,” the housing 232 is referred to as the “second housing,” and the magnet 233 is referred to as the “second magnet.” The coil portion 234 is referred to as the “second coil portion,” the connection member 235 is referred to as the “second connection member,” the support member 236 is referred to as the “second support member,” and the base 237 is referred to as the “second support member.” The image sensor 150 is referred to as the “base”, the image sensor 150 is referred to as the “second image sensor”, and the substrate 160 is referred to as the “second substrate.”

Hereinafter, the dual camera module 1000 of the first embodiment will be described with reference to the drawings. Figure 9 is a perspective view showing the dual camera module of the first embodiment, Figure 10 is a conceptual diagram showing the dual camera module of the first embodiment, and Figure 11 is a dual camera module of the first modification of the first embodiment. It is a conceptual diagram, FIG. 12 is a conceptual diagram showing a dual camera module of the second modification of the first embodiment, FIG. 13 is a conceptual diagram showing the dual camera module of the third modification of the first embodiment, and FIG. 14 is a conceptual diagram showing the dual camera module of the third modification of the first embodiment. It is a conceptual diagram showing a dual camera module of the fourth modification of the first embodiment, Figure 15 is a conceptual diagram showing the dual camera module of the fifth modification of the first embodiment, and Figure 16 is a conceptual diagram showing the fifth modification of the first embodiment of the present invention. This is an exploded perspective view showing the cover member, lens holder, and liquid lens.

Hereinafter, the structure of the dual camera module 1000 of this first embodiment will be described. The dual camera module 1000 may include a first camera module 1, a second camera module 2, and a control unit (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 arranged adjacent to each other. The first camera module 1 and the second camera module 2 may be spaced apart front and rear. In this case, the first camera module 1 may be placed at the front, and the second camera module 2 may be placed at the rear. The first camera module 1 and the second camera module 2 may be arranged to face each other. The first camera module 1 may be a narrow-angle (tele) camera module. The second camera module 2 may be a wide-angle 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. Additionally, at least a portion 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 capture the first image I1. The second camera module 2 can capture the second image I2. At least a portion of the area of the first image I1 may be included in the area of the second image I2. The entire 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 and the area of the second image I2 overlap. In the overlap area (O), which is the same subject area, the angle of view (tele) of the first camera module (1) is smaller than the angle of view (wide) of the second camera module (2), so the first image (I1) is imaged for the same subject area. Including more pixels can result in higher resolution, resolution, or MTF for the same subject area. The first image (I1) and the second image (I2) can be synthesized. The composite image (C) may have higher resolution, resolution, or MTF than the second image (I2) due to the first image (I1). In other words, a higher quality composite image (C) can be created than when shooting with 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 board 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 I2 can be transmitted from the second image sensor 150-2 of the second camera module 2. The control unit can 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 can be applied by analogy to the first camera module 1. The technical idea of the liquid lens camera module 100 can be analogously applied to the second camera module 2.

The first camera module 1 may have a first lens holder 120-1 accommodated inside a first cover member 110-1, which is an exterior material. Additionally, the lens module 130-1 and the liquid lens 140-1 can be accommodated inside the first lens holder 120-1. In this first embodiment, the first liquid lens 140-1 is in an add-in form between the lenses of the first lens module 130-1, but the first liquid lens 140-1 is the first liquid lens 140-1. It may be installed (add-on) on top of the lenses of the lens module 130-1. In this case, the first liquid lens 140-1 may be placed on the top of the first lens holder 120-1. Additionally, the first cover member 110-1 may be hollow, and a first transmission window 111-1 may be formed on its upper surface. Additionally, a first lens hole 121-1 is formed in the first lens holder 120-1 so that the lens module 130-1 and the liquid lens 140-1 can be installed. The first transmission window 111-1 and the first lens hole 121-1 may be aligned in the optical axis direction. Furthermore, a first substrate 160-1 is disposed below the first cover member 110-1 and the first lens holder 120-1, so that the bottom opening of the first cover member 110-1 and the first lens are formed. It can cover the hole (121-1). Additionally, 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, external 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. It can be irradiated with the image sensor 150-1. The configuration of the first camera module 1 can be inferred and applied to the configuration of the second camera module 2. The configurations of the second camera module 20 and the first camera module 1 may match.

The first camera module 1 and the second camera module 2 may be arranged close to each other front and rear. In this case, the first side 112-1 of the first cover member 110-1 and the second side 113-2 of the second cover member 110-2 may face each other. The first side 112-1 and the second side 113-2 may be surfaces having the shortest distance between the first camera module 1 and the second camera module 2. Additionally, the first side 112-1 and the second side 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 first image sensor (150-1) of the first camera module (1) and the second camera module (2). It may be smaller than the width of at least one image sensor among the two image sensors 150-2. The shortest distance (D1) between the first camera module (1) and the second camera module (2) is when the direction in which the first camera module (1) and the second camera module (2) are arranged is called the first direction, It may be smaller than the smaller of the width in the first direction of the first image sensor 150-1 and the width in the first direction of the second camera module 2. In addition, the shortest distance (D1) between the first camera module (1) and the second camera module (2) is less than the smallest width among the widths of the first image sensor (150-1) and the second image sensor (150-2). It 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 112-1 and the second side 113-2 may be 2 mm or less. That is, the actuators of the first camera module 1 and the second camera module 2 in this first embodiment are liquid lenses 140, so compared to the case where a VCM (Voice Coil Motor) is used as an actuator, a single camera Electromagnetic interference between modules does not occur. That is, the liquid lens camera module 100 emits a small amount of electromagnetic waves. Additionally, the liquid lens camera module 100 is less affected by external electromagnetism. Therefore, in the dual camera module 1000 of this first embodiment, the first camera module 1 and the second camera module 2 can be placed very close to each other.

Hereinafter, the structure of the dual camera module 1000 of 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 may be in contact with each other. In this case, the first cover member 110-1 and the second cover member 110-2 may be bonded together using an adhesive material. The first side 112-1 of the first cover member 110-1 and the second side 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 disappears. Furthermore, the shape and arrangement of the first substrate 160-1 and the second substrate 160-2 can be adjusted for a compact adhesive structure between 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 contact each other. Furthermore, the first substrate 160-1 and the second substrate 160-2 may be formed as one body. When the first substrate 160-1 and the second substrate 160-2 are formed integrally, the first image sensor 150-1 and the second image sensor 150-2 are also bonded to each other or formed integrally. The first substrate 160-1 and the second substrate 160-2 may be disposed on a substrate formed integrally. When the first image sensor 150-1 and the second image sensor 150-2 are formed as one body, the width of the image sensor may be the width of the active area on the image sensor.

Hereinafter, the structure of the dual camera module 1000 of the second modification of the first embodiment will be described. In the dual camera module 1000 of the second modification, the first substrate 160-1 and the second substrate 160-2 may be formed as one body. 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 using a connector or the like. Additionally, the first substrate 160-1 and the second substrate 160-2 may be manufactured as a single component. In this case, the first substrate 160-1 and the second substrate 160-2 formed as one body may be in the form of a rectangular plate with a length extending forward and backward.

Hereinafter, the structure of the dual camera module 1000 of the third modification of the first embodiment will be described. 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 formed integrally. In this case, the first cover member 110-1 and the second cover member 110-2 may share an internal space. The first side (112-1) and the second side (113-2) are deleted, and the upper surface of the first cover member (110-1) and the upper surface of the second cover member (110-2) are connected to form an integrated A cover member can be formed. A 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 and aligned with the optical axis of the first camera module 1. In addition, the second transmission window 111-2 may be formed by being spaced rearward from the first transmission window 111-1 and aligned with the optical axis of the second camera module 2. Additionally, a first substrate 160-1 and a second substrate 160-2 may be disposed on the bottom of the first and second cover members 110-1 and 110-2 formed integrally. In this case, the first substrate 160-1 and the second substrate 160-2 may be formed integrally as in the second modification. Inside the integrally formed cover members (110-1, 110-2), the first and second lens holders (120-1, 120-2), the first and second lens modules (130-1, 130-2), and the first and second liquid lenses ( 140-1,140-2) and the first and second image sensors (150-1,150-2) can be accommodated. For this purpose, the first and second cover members 110-1 and 110-2 formed integrally may have a hollow shape having a length in the front-back direction. The first and second cover members 110-1 and 110-2 formed as one body may be in the form of a hollow block having a length in the front-back 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 of the first lens holder 120-1 and the front side of the second lens holder 120-2 may be disposed to face each other. In this case, the shortest distance between the rear side of the first lens holder 120-1 and the front side of the second lens holder 120-2 may be 2 mm or less. The shortest distance between the rear side of the first lens holder (120-1) and the front side of the second lens holder (120-2) is the image of at least one of the first image sensor of the first camera and the second image sensor of the second camera. It may be smaller than the width of the sensor. The shortest distance between the rear side of the first lens holder (120-1) and the front side of the second lens holder (120-2) is the direction in which the first camera module (1) and the second camera module (2) are arranged. When referring to a direction, it may be smaller than the smaller 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. In addition, the shortest distance between the rear side of the first lens holder (120-1) and the front side of the second lens holder (120-2) is the width of the first image sensor (150-1) and the second image sensor (150-2). It may be smaller than the smallest width.

Hereinafter, the dual camera module 1000 of the fourth modification of the first embodiment will be described. The dual camera module 1000 of the fourth modification example may have a structure in which the first and second lens holders 120-1 and 120-2 are integrally formed in the third modification example. 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 to form a single piece. As a result, the first and second lens holders 120-1 and 120-2 formed integrally may have a three-dimensional structure having a length in the front-to-back direction. Additionally, the first and second lens holders 120-1 and 120-2 formed integrally may have a rectangular parallelepiped structure having a length in the front-to-back direction. Additionally, a first lens hole 121-1 may be formed in the first and second lens holders 120-1 and 120-2 integrally formed in alignment with the optical axis of the first camera module 1. The second lens hole 121-2 may be formed rearwardly spaced 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 of the first liquid lens 140-1 and the front side of the second liquid lens 140-2 may be disposed to face 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 the first image sensor (150-1) and the second camera module of the first camera module (1). It may be smaller than the width of at least one image sensor among the second image sensors 150-2 of (2). 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 direction in which the first camera module (1) and the second camera module (2) are arranged. When referring to a direction, it may be smaller than the smaller of the width in the first direction of the first image sensor 150-1 and the width in the first direction of the second image sensor 150-2. 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 longest among the widths of the first image sensor (150-1) and the second image sensor (150-2). It can be smaller than the small width.

Hereinafter, the dual camera module 1000 of the fifth modification of the first embodiment will be described. The dual camera module 1000 of the fifth modification example has a structure in which the first and second lens holders (120-1, 120-2) and the first and second liquid lenses (140-1, 140-2) are integrally formed in the third modification example. You can. The first and second lens holders 120-1 and 120-2 may be formed integrally as in the fourth modification example. However, a portion of the first lens hole 121-1 and the second lens hole 121-2 may be connected and communicated. That is, the first and second lens holders 120-1 and 120-2 may partially share the internal space. Therefore, the first and second liquid lenses (140-1,140-2) formed integrally are connected to the first lens hole (121-1) and the second lens hole (121-2) in the first and second lens holders (120-1,120-2). ) can be inserted in the form of an add-in into the connected part. In Figure 15, only the add-in form is shown, but the first and second liquid lenses (140-1,140-2) formed integrally are the first and second lens holders (120-1,120-2) formed integrally in the add-on form. It can be placed at the top. The first liquid lens 140-1 and the second liquid lens 140-2 may be formed integrally. As shown in FIG. 16, the rear side of the first liquid lens 140-1 and the front side of the second liquid lens 140-2 are combined to form the first liquid lens 140-1 and the second liquid. The lens 140-2 may be formed integrally. The rear end of the first upper cover (141-1) and the front end of the second upper cover (141-2) are joined to form one piece, and the rear side of the first core plate (142-1) and the second core plate (142) The front side of -2) may be combined to form one piece, and the rear end of the first lower cover (149-1) and the front end of the second lower cover (149-2) may be combined to form one piece. As a result, the first and second liquid lenses 140-1, 140-2 formed as one body have a rectangular shape with a length in the front-to-back direction. In this case, the first cavity 143-1 may be located on the first core plate 142-1 aligned with the optical axis of the first camera module 1. In addition, the second cavity (143-2) may be located on the second core plate (142-2), spaced rearward from the first cavity (143-1) and aligned with the optical axis of the second camera module (2). . Additionally, 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 formed as one body contact each other. Additionally, the second electrode 146-1 and the fourth electrode 146-2 may form a gap. As a result, electrical short circuits do not occur.

The modification of the first embodiment described above can provide a dual camera module 1000 having a compact structure by integrating the components of the first camera module 1 and the second camera module 2. Furthermore, it has a structure that can further narrow the separation distance between the first camera module (1) and the second camera module (2).

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

Hereinafter, the structure of the dual camera module 2000 of this second embodiment will be described. The dual camera module 2000 may include a first camera module 1, a second camera module 2, and a control unit (not shown). A driving camera module 200 may be used in the first camera module 1. The liquid lens camera module 100 may be used as the second camera module 2. The first camera module 1 and the second camera module 2 may be arranged adjacent to each other. The first camera module 1 and the second camera module 2 may be spaced apart front and rear. In this case, the first camera module 1 may be placed at the front, and the second camera module 2 may be placed at the rear. The first camera module 1 and the second camera module 2 may be arranged to face each other. The first camera module 1 may be a narrow-angle (tele) camera module, and the second camera module 2 may be a wide-angle (wide) camera module. Additionally, the first camera module 1 may be a wide-angle camera module and the second camera module 2 may be a narrow-angle (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. Additionally, at least a portion 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 portion 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 capture the first image I1. The second camera module 2 can capture the second image I2. At least a portion 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. The entire area of the first image (I1) may be included in the area of the second image (I2). The entire 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 and the area of the second image I2 overlap. In the overlap area (O), the angle of view (tele) of the first camera module (1) is smaller than the angle of view (wide) of the second camera module (2), so the first image (I1) includes higher pixels and has higher resolution and MTF. can be high. The first image (I1) and the second image (I2) can be synthesized. The composite image (C) has higher resolution and MTF than the second image (I2) due to the first image (I1). In other words, a higher quality composite image (C) can be created than when shooting with a single camera module.

Since the angle of view (tele) of the second camera module 2 is smaller than the angle of view (wide) of the first camera module 1, the second image I2 may include higher pixels and have higher resolution. The second image (I2) and the first image (I1) can be synthesized. The composite image (C) may have higher resolution or resolution than the first image (I1) due to the second image (I2). In other words, a higher quality composite image (C) can be created than when shooting with 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 board 160-2 of the second camera module 2. The control unit may be mounted on the first board 250-1 or the second board 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 I2 can be transmitted from the second image sensor 150-2 of the second camera module 2. The control unit can 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 by analogy to the dual camera module 2000 of the second embodiment. However, 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. Hereinafter, description of the same technical idea as 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 analogously applied to the second camera module 2. The technical idea of the second camera module of the first embodiment can be applied to the second camera module 2 by analogy.

The first camera module 1 may be a driving camera module 200. A 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 device 230-1 includes the first housing 232-1 and the first bobbin 231-1 accommodated inside the first housing 232-1. It may include a first lens module 220-1 accommodated therein. Additionally, the first bobbin 231-1 and the first housing 232-1 may be connected by a first connection member. Additionally, the first housing 232-1 may be connected to the first base 237 by a first support member. Additionally, the first image sensor 240-1 may be mounted on the first substrate 250-1 in alignment with the optical axis. Additionally, a first magnet 233-1 may be disposed inside the first housing 232-1. Additionally, the first coil portion 234-1 may include a winding coil disposed horizontally opposite the first magnet 233-1 on the outside of the first bobbin 231-1. Additionally, the first coil portion 234-1 may include a pattern coil disposed at a corner of the first base 237-1 to vertically face the first magnet 233-1.

The first camera module 1 and the second camera module 2 may be arranged close to each other front and rear. In this case, the first side 212-1 of the first cover member 210-1 and the second side 113-2 of the second cover member 110-2 may face each other. The first side 212-1 and the second side 113-2 may be surfaces having the shortest distance between the first camera module 1 and the second camera module 2. Additionally, the first side 212-1 and the second side 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 212-1 and the second side 113-2 may be 2 mm or less. The shortest distance between the first side 212-1 and the second side 113-2 is the first image sensor 240-1 of the first camera module 1 and the second image sensor 150-1 of the second camera. 2) It may be smaller than the width of at least one image sensor. That is, since the actuator of the second camera module 2 in this second embodiment is the second liquid lens 140-2, the electromagnetic waves affecting the lens driving device 230-1 of the first camera module 1 are almost completely eliminated. It may not occur. Additionally, electromagnetic waves generated from the lens driving device 230-1 of the first camera module 1 do not affect the second liquid lens 140-2. As a result, the first camera module 1 and the second camera module 2 can be placed very close to each other.

Hereinafter, the structure of the dual camera module 2000 of the first modification of the second embodiment will be described. In the dual camera module 2000 of the first modification, the first cover member 210-1 and the second cover member 110-2 may 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 together using an adhesive material. The first side 212-1 of the first cover member 210-1 and the second side 113-2 of the second cover member 110-2 may contact each other. As a result, the gap between the first camera module 1 and the second camera module 2 disappears. Furthermore, the shape and arrangement of the first substrate 250-1 and the second substrate 160-2 can be adjusted for a compact adhesive structure between 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 contact each other. Furthermore, the first substrate 250-1 and the second substrate 160-2 may be formed as one body.

Hereinafter, the structure of the dual camera module 2000 of the second modification of the first embodiment will be described. In the dual camera module 2000 of the second modification, the first substrate 250-1 and the second substrate 160-2 may be formed integrally. 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 using a connector or the like. Additionally, the first substrate 250-1 and the second substrate 160-2 may be manufactured as a single component. In this case, the first substrate 250-1 and the second substrate 160-2, which are formed as one piece, may be in the form of a rectangular plate with a length extending forward and backward.

Hereinafter, the structure of the dual camera module 2000 of the third modification of the first embodiment will be described. In the third modification of the dual camera module 2000, the first cover member 210-1 and the second cover member 110-2 may be formed integrally. In this case, the first cover member 210-1 and the second cover member 110-2 may share an internal space. The first side (212-1) and the second side (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 to form an integrated cover member. can be formed. A first transmission window 211-1 may be formed on the upper surface of the integrally formed cover members 210-1 and 110-2 by being aligned with the optical axis of the first camera module 1. In addition, the second transmission window 111-2 may be formed by being spaced rearward from the first transmission window 211-1 and aligned with the optical axis of the second camera module 2. Additionally, a first substrate 250-1 and a second substrate 160-2 may be disposed on the bottom of the cover members 210-1 and 110-2 formed integrally. In this case, the first substrate 250-1 and the second substrate 160-2 may be formed integrally as in the second modification. Inside the cover members 210-1 and 110-2 formed integrally, there is a first lens module 220-1, a first lens driving device 230-1, a first image sensor 240-1, and a first substrate ( 250-1), second lens holder (120-2), second lens module (130-2), second liquid lens (140-2), second image sensor (150-2), and second substrate (160) -2) can be accepted. For this purpose, the first and second cover members 210-1 and 110-2 formed as one piece may have a hollow shape having a length in the front-back direction. The first and second cover members 210-1 and 110-2 formed as one body may be in the form of a hollow block having a length in the front-back direction. In this case, a first supplemental cover member 260-1 may be added to protect the first lens driving device 230-1. The first supplemental cover member 260-1 is hollow and can accommodate the lens driving device 230-1 therein. The first supplemental cover member 260-1 may have a hollow rectangular parallelepiped shape. The first supplemental cover member 260-1 is made of metal and can block external electromagnetic waves. As a result, the lens driving device 230-1 can be electromagnetically stable. Additionally, it can be protected from external physical shock. 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 of the first supplemental cover member 260-1 and the front side of the second lens holder 120-2 may be disposed to face each other. In this case, the shortest distance between the rear side of the first supplemental cover member 260-1 and the front side 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 the first image sensor (240-1) and the second camera module ( It may be smaller than the width of at least one image sensor among the second image sensors 150-2 of 2). The shortest distance (D5) between the first supplemental cover member (260-1) and the second lens holder (120-2) is the first direction in which the first camera module (1) and the second camera module (2) are arranged. In this case, it may be smaller than the smaller of the width in the first direction of the first image sensor 240-1 and the width in the first direction of the second camera module 2. The shortest distance (D5) between the first supplementary cover member (260-1) and the second lens holder (120-2) is the shortest among the widths of the first image sensor (240-1) and the second image sensor (150-2). It can be smaller than the small width.

The modified example of the second embodiment described above can provide a dual camera module 2000 having a compact structure by integrating the components of the first camera module 1 and the second camera module 2. Furthermore, it has a structure that can further narrow the separation distance between the first camera module (1) and the second camera module (2).

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

Hereinafter, the structure of the dual camera module 3000 of this third embodiment will be described. The dual camera module 3000 may include a first camera module 1, a second camera module 2, and a control unit (not shown). The liquid lens camera module 100 may be used as the first camera module 1. A driving camera module 200 may be used as the second camera module 2. The first camera module 1 and the second camera module 2 may be arranged adjacent to each other. The first camera module 1 and the second camera module 2 may be spaced apart front and rear. In this case, the first camera module 1 may be placed at the front, and the second camera module 2 may be placed at the rear. The first camera module 1 and the second camera module 2 may be arranged to face each other. It may be a first camera module 1 and a narrow angle (tele) camera module. The second camera module 2 may be a wide-angle 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. Additionally, at least a portion 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 capture the first image I1. The second camera module 2 can capture the second image I2. At least a portion of the area of the first image I1 may be included in the area of the second image I2. The entire 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 and the area of the second image I2 overlap. In the overlap area (O), the angle of view (tele) of the first camera module (1) is smaller than the angle of view (wide) of the second camera module (2), so the first image (I1) includes higher pixels and has higher resolution and MTF. can be high. The first image (I1) and the second image (I2) can be synthesized. The composite image (C) has higher resolution and MTF than the second image (I2) due to the first image (I1). In other words, a higher quality composite image (C) can be created than when shooting with 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 board 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 I2 can be transmitted from the second image sensor 240-2 of the second camera module 2. The control unit can 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 by analogy to the dual camera module 3000 of the third embodiment. However, in the dual camera module 3000 of the third embodiment, the first camera module 1 is a liquid lens camera module 100, and the second camera module 20 is a driving camera module 200 of the second embodiment. Compared to the dual camera module (2000), the arrangement has been changed. However, it should be noted that even 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 can be applied by analogy to the first camera module 1. The technical idea of the driving camera module 200 can be analogously applied to the second camera module 2.

Hereinafter, the structure of the dual camera module 3000 of 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 may be in contact with each other. In this case, the first cover member 110-1 and the second cover member 210-2 may be bonded together using an adhesive material. The first side 112-1 of the first cover member 110-1 and the second side 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 disappears. Furthermore, the shape and arrangement of the first substrate 160-1 and the second substrate 250-2 can be adjusted for a compact adhesive structure between 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 contact each other. Furthermore, the first substrate 160-1 and the second substrate 250-2 may be formed integrally.

Hereinafter, the structure of the dual camera module 3000 of the second modification of the third embodiment will be described. In the dual camera module 3000 of the second modification, the first substrate 160-1 and the second substrate 250-2 may be formed integrally. 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 using a connector or the like. Additionally, the first substrate 160-1 and the second substrate 250-2 may be manufactured as a single component. In this case, the first substrate 160-1 and the second substrate 250-2, which are formed as one body, may be in the form of a rectangular plate with a length extending forward and backward.

Hereinafter, the structure of the dual camera module 2000 of the third modification of the present third embodiment will be described. 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 formed integrally. In this case, the first cover member 110-1 and the second cover member 210-2 may share an internal space. The first side (112-1) and the second side (213-2) disappear, and the upper surface of the first cover member (110-1) and the upper surface of the second cover member (210-2) are connected to form an integrated cover member. can be formed. A first transmission window 111-1 may be formed on the upper surface of the integrally formed cover members 110-1 and 210-2, aligned with the optical axis of the first camera module 1. In addition, the second transmission window 211-2 may be formed by being spaced rearward from the first transmission window 111-1 and aligned with the optical axis of the second camera module 2. Additionally, a first substrate 160-1 and a second substrate 250-2 may be disposed on the bottom of the cover members 110-1 and 210-2 formed integrally. In this case, the first substrate 160-1 and the second substrate 250-2 may be formed integrally as in the second modification. Inside the cover members 110-1 and 210-2 formed integrally, there is a first lens holder 120-1, a first lens module 130-1, a first liquid lens 140-1, and a first image sensor ( 150-1), first substrate (160-2) and second lens module (220-2), second lens driving device (230-2), second image sensor (240-2), second substrate (250) -2) can be accepted. For this purpose, the first and second cover members 110-1 and 210-2 formed integrally may have a hollow shape having a length in the front-back direction. The first and second cover members 110-1 and 210-2 formed integrally may be in the form of a hollow block having a length in the front-back 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 supplemental cover member 260-2 is hollow and can accommodate the lens driving device 230-2 therein. The second supplemental cover member 260-2 may have a hollow rectangular parallelepiped shape. The second supplemental cover member 260-2 is made of metal and can block external electromagnetic waves. As a result, the lens driving device 230-2 can be electromagnetically stable. Additionally, it can be protected from external physical shock. In this case, the shortest distance D6 between the second supplemental cover member 260-2 and the first lens holder 120-1 may be 2 mm or less. The front side of the second supplemental cover member 260-2 and the rear side of the first lens holder 120-1 may be disposed to face each other. In this case, the shortest distance between the front side of the second supplemental cover member 260-2 and the front side of the first lens holder 120-1 may be 2 mm or less.

The modification of the third embodiment described above can provide a dual camera module 3000 having a compact structure by integrating the components of the first camera module 1 and the second camera module 2. Furthermore, it has a structure that can further narrow the separation distance between the first camera module (1) and the second camera module (2).

Hereinafter, the operation 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. Figure 25 is a conceptual diagram showing shooting with a dual camera module of the first, second, and third embodiments, and Figure 26 is a conceptual diagram showing the change in MTF value when digitally zooming a composite image.

The subject (S) to be captured by the dual camera modules (1000, 2000, and 3000) may include the main first and second subjects (S1, S2) and the secondary background subject (B). Additionally, the distance between the first subject (S1) and the dual camera modules (1000, 2000, 3000) is longer than the distance between the second subject (S2) and the dual camera modules (1000, 2000, 3000). In other words, a typical dual camera module cannot focus the first and second subjects (S1, S2) at the same time.

The first camera module 1 is a narrow-angle camera module and can capture the first image I1 including the first subject S1. The second camera module 2 is a wide-angle camera module that can capture a second image I2 including the first and second subjects S1 and S2 and the background subject B. In addition, 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 may exist between the first image I1 and the second image I2. You can.

Hereinafter, the description will be made assuming 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.

The first camera module 1 and the second camera module 2 can simultaneously perform an autofocus function and/or an image stabilization function to capture the first and second images I1 and I2. Therefore, it is possible to simultaneously focus on the first subject (S1) and the second subject (S2) at different distances. Furthermore, tremors caused by external forces 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 can receive the first image (I1) and the second image (I2) and generate a composite image (C). In this case, an image stitching algorithm may be used. Only the second image (I2) can exist in the overlap area (O) of the composite image (C). Additionally, the first image I1 and the second image I2 synchronized therewith may exist in the overlap area O of the composite image C.

The first camera module 1 may have a narrow angle, and the second camera module 2 may have a wide angle. Therefore, the resolution and MTF of the first image (I1) in the overlap area (O) of the composite image (C) may be higher than those of the second camera module (2). As a result, a high-quality composite image (C) with higher resolution and MTF than one taken with only the second camera module (2) can be generated. Furthermore, as described above, the first camera module 1 and the second camera module 2 simultaneously perform autofocus and image stabilization functions, so the MTF of the first image (I1) and the MTF of the second image (I2) are It can get higher. As a result, the highest quality composite image (C) can be created.

Figure 26 is a conceptual diagram showing a case where the composite image (C) is digitally zoomed based on the overlap area (O) to increase the magnification. The horizontal axis of the graph in FIG. 26 represents the digital zoom factor, and the vertical axis represents MTF. The overlap area (O) of the composite image (C) is an image taken at a narrow angle and has higher resolution and MTF than other areas of the composite image (C) in which only the second image (I2) exists. Therefore, when the magnification is increased by digital zooming, the MTF of the composite image (C) decreases, and as the ratio of the overlap area (O) increases, the reduction rate of the MTF decreases, is maintained, or 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 may be arranged in close proximity or in contact with each other. This is because there is no electromagnetic interference between the first and second camera modules (1,2). Also, this is because 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 synchronization rate of the first image (I1) and the second image (I2) in the overlap area (O) increases, making it possible to generate a high quality composite image (C). Furthermore, it is easy to design so that the entire angle of view of the first camera module (1) is 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 narrowed to a minimum, the entire angle of view of the first camera module 1 may be included in the angle of view of the second camera module 2. If the separation distance between the first camera module 1 and the second camera module 2 is large, this optical design will be limited.

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

Optical devices may include mobile phones, mobile phones, smart phones, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), navigation devices, etc. there is. However, it is not limited to this and any device for taking images 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 NAAC dual camera modules 1000, 2000, and 3000 may be included in the optical device.

The body may form the appearance of the optical device. As an example, the main body may include a rectangular parallelepiped shape. However, it is not limited to this. As a variation, the main body may be formed to be rounded at least in part. The main body can accommodate dual camera modules (1000, 2000, 3000). A display unit may be disposed on one side of the main body.

Dual camera modules (1000, 2000, and 3000) may be placed in the main body. The dual camera module can be placed on one side of the main body. At least part of the dual camera module can be accommodated inside the main body. The dual camera module can capture images of subjects.

The display unit may be placed in the main body. The display unit may be placed on one side of the main body. That is, the display unit can be placed on the same side as the dual camera module. Alternatively, the display unit may be disposed on one side and another side of the main body. The display unit may be placed on a side opposite to the side where the dual camera module is placed. The display unit can output images captured by the dual camera module.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, terms such as “include,” “comprise,” or “have” described above mean that the corresponding component may be present, unless specifically stated to the contrary, and therefore do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but rather to explain it, 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 interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

1000,2000,3000: Dual camera module

Claims (27)

A first camera module including a first liquid lens and capturing a first image; and
It includes a second liquid lens and a second camera module that takes a second image,
The angle of view of the first camera module is smaller than the angle of view of the second camera module,
At least a portion of the angle of view of the first camera module is included in the angle of view of the second camera module, and the first image and the second image are configured to generate a composite image combining the first image and the second image. There is an overlap area between
When the first camera module is focused, the focal length of the first liquid lens varies depending on the distance to the subject,
When the second camera module is focused, the focal length of the second liquid lens varies depending on the distance to the subject,
When the subject is at the first position from the first camera module, the curvature of the first interface of the first liquid lens is the curvature of the first interface of the second liquid lens when the subject is at the first position from the second camera module. Dual camera module with greater curvature than the two interfaces.
According to paragraph 1,
The focusing is
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 becomes shorter as the subject approaches the first liquid lens,
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 becomes shorter as the subject approaches the second liquid lens.
According to paragraph 1,
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 becomes smaller from the top to the bottom,
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,
A dual camera module in which the diameter of the second cavity becomes smaller from top to bottom.
According to paragraph 1,
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 becomes smaller from the bottom to the top,
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,
A dual camera module in which the diameter of the second cavity becomes smaller from the bottom to the top.
According to paragraph 3,
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 toward the top of the first cavity,
When the subject is focused at a distance of 10 cm from the second camera module, the shape of the second interface of the second liquid lens is convex toward the top of the second cavity.
According to paragraph 4,
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 toward the bottom of the first cavity,
When the subject is focused at a distance of 10 cm from the second camera module, the shape of the second interface of the second liquid lens is convex toward the bottom of the second cavity.
According to paragraph 1,
When the subject is focused at a distance of 10cm from the first camera module, the curvature of the first interface is greater than the curvature of the second interface when the subject is at a distance of 10cm from the second camera module. Large dual camera module.
According to paragraph 1,
The first camera module further includes a first lens holder,
The first lens holder includes a first lens disposed at the top inside the first lens holder,
The second camera module further includes a second lens holder,
The second lens holder includes a second lens disposed at the top inside the second lens holder,
A dual camera module in which the diameter of the first lens is smaller than the diameter of the second lens.
According to paragraph 1,
The first camera module includes a first cover member accommodating the first liquid lens, and the second camera module includes a second cover member accommodating the second liquid lens,
The first cover member includes a first upper surface plate forming an upper portion of the first cover member and a first side plate forming a side surface, and the second cover member includes a first upper surface plate forming an upper portion of the second cover member. A dual camera module comprising two upper surface plates and a second side plate forming a side surface, wherein the first upper surface plate and the second upper surface plate have the same area.
According to clause 9,
A dual camera module in which the area of the first upper plate is narrower than the area of the second upper plate.
According to paragraph 1,
A dual camera module 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.
According to paragraph 1,
A dual camera module 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.
According to paragraph 1,
A dual camera module in which the focal length of the second camera module is smaller than the focal length of the first camera module.
According to paragraph 1,
The first interface changes to adjust the MTF value of the first image,
A dual camera module that adjusts the MTF value of the second image by changing the second interface.
According to paragraph 1,
A dual camera module in which the first and second camera modules simultaneously perform auto focusing.
According to paragraph 1,
A dual camera module capable of further performing image stabilization by changing the first interface of the first liquid lens.
According to paragraph 1,
A dual camera module that performs image stabilization by changing the second interface of the second liquid lens.
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
A control unit that combines the first image and the second image to create a composite image,
The angle of view of the first camera module is smaller than the angle of view of the second camera module,
At least a portion of the angle of view of the first camera module is included in the angle of view of the second camera module, and the first image and the second image can be generated by combining the first image and the second image. There is an overlap area between
When the first camera module is focused, the focal length of the first liquid lens varies depending on the distance to the subject,
When the second camera module is focused, the focal length of the second liquid lens varies depending on the distance to the subject,
When the subject is at the first position from the first camera module, the curvature of the first interface of the first liquid lens is the curvature of the first interface of the second liquid lens when the subject is at the first position from the second camera module. greater than the curvature of the two interfaces,
When the control unit digitally zooms the composite image centered on the overlap area to increase the magnification,
An optical device in which the resolution of the composite image decreases and then increases.
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