KR101241503B1 - Camera module - Google Patents

Abstract

Camera module according to the present invention comprises a holder for supporting the first lens group and the second lens group on both sides; A reflecting member for reflecting image information input through the first lens group and the second lens group; And an image sensor processing the image information reflected by the reflective member into a digital signal. The reflective member may include a first mirror prism for total reflection of an image introduced through the first lens group or a reflector coated on a material having a high reflectance on one side thereof and a central surface of the holder; And a second rectangular prism for total reflection of the image introduced through the second lens group.

According to the present invention, it is possible to efficiently utilize space by providing a camera module capable of photographing in both directions using one holder, and there is an effect that a mobile communication terminal equipped with a camera module can be designed more freely.

Bidirectional imaging, camera module, reflector, prism

Description

Camera module {Camera module}

1 is a perspective view for explaining an assembly process of a conventional camera module.

2 is a cross-sectional view for explaining a camera module according to an embodiment of the present invention.

3 is a cross-sectional view for explaining a camera module according to another embodiment of the present invention.

Description of the Related Art [0002]

100, 200: camera module 110, 210: holder

120: reflector 130, 231: first lens group

131 and 232: second lens group 140 and 240: IR cut filter

150, 251: image sensor 160, 261: PCB

221: first prism 222: second prism

The present invention relates to a camera module.

Recently, with the development of communication technology and digital information processing technology, portable terminal technology in which various functions such as information processing and arithmetic, communication, image information input and output are integrated is emerging. Examples include digital cameras, PDAs with communications capabilities, mobile phones with digital camera capabilities, and personal multi-media players (PMPs). Due to this, mounting of high specification digital camera modules is becoming more common. Mega technology image sensors are applied to digital camera modules mounted on portable terminals due to the development of various technologies. While the importance of additional functions such as auto focus and optical zoom is becoming more important, the form-factor of the camera module continues to be miniaturized very limitedly.

In order to assemble such a small digital camera module, as shown in FIG. 1, the image sensor 120 is attached to the upper side of the printed circuit board 110 using epoxy. When the adhesion of the image sensor 120 is completed, the pads 112 and 121 formed on the printed circuit board 110 and the image sensor 120 are connected to each other using a wire bonding process. The pad 112 of the image sensor 120 is connected between the pad 121 of the image sensor 120 with a wire of conductive material. When the printed circuit board 110 and the image sensor 120 are connected by wires, the portion of the image sensor 120 not occupied, that is, the edge portion 101 of the outer circumference of the printed circuit board 110 as shown in FIG. 1. Apply epoxy to When epoxy is applied to the edge portion 101 of the printed circuit board 110, the housing 130 is bonded to the printed circuit board 110, and then the epoxy 101 is cured at a predetermined temperature to fix the housing 130. . When the printed circuit board 110 and the housing 130 are bonded, the lens unit 140 is inserted into the housing 130 to complete the assembly of the camera module 100.

Such a conventional camera module has a structure in which one image sensor and a lens are positioned on the same line, so that two camera modules are provided on both sides for bidirectional imaging, or one camera module rotates 180 degrees. It must be provided in such a way that the image can be taken in each direction.

Therefore, the use of two camera modules increases the manufacturing cost and can be limited to the efficient use of space, which is not suitable for the recent slimming and miniaturization.

In addition, there is a problem that the conventional design limitation of the camera module due to structural difficulties due to the limitation of space utilization.

The present invention has been proposed to solve the above problems, and provides a camera module capable of imaging in both directions.

Camera module according to the present invention comprises a holder for supporting the first lens group and the second lens group on both sides; A reflecting member for reflecting image information input through the first lens group and the second lens group; And an image sensor processing the image information reflected by the reflective member into a digital signal.

In addition, the camera module according to the present invention further includes an IR cut filter provided inward for each of the first lens group and the second lens group.

In addition, the reflective member provided in the camera module according to the present invention is a reflector coated with a material having a high reflectance on one side thereof is mounted on the inner center of the holder.

In addition, the material having a high reflectance constituting the reflective member of the camera module according to the present invention is at least one of silver (Ag), aluminum (Al), magnesium oxide.

In addition, the reflective member provided in the camera module according to the present invention includes a first right angle prism for total reflection of the image entered through the first lens group; And a second rectangular prism for total reflection of the image introduced through the second lens group.

In addition, the first lens group and the second lens group provided in the camera module according to the present invention are integrally rotated along the circumferential direction of the holder.

In addition, any one of the first lens group and the second lens group provided in the camera module according to the present invention is rotated along the circumferential direction of the holder.

In addition, when the reflecting member of the camera module according to the present invention is provided with a plurality of, by editing the connection portion of the image information respectively reflected by the reflecting members and processed by the image sensor, to correct to one image information The controller further includes a panoramic correction.

Hereinafter, a camera module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view illustrating a camera module according to an embodiment of the present invention. The camera module 100 according to an embodiment of the present invention includes a first lens group 130 and a first lens group each including a plurality of lenses. 2 lens group 131, the holder 110 for supporting the first lens group 130 and the second lens group 131, the image entered through the first lens group 130 and the second lens group 131 Reflector 120 for reflecting the light and delivering it to the image sensor 150, an IR blocking filter 140 provided inside each of the first lens group 130 and the second lens group 131, and a printed circuit board (PCB). circuit board 160).

The holder 110 mounts the first lens group 130 and the second lens group 131 each having a plurality of lenses on both sides thereof, and with respect to the first lens group 130 and the second lens group 131. It is a housing member provided with a stage (not shown) for mounting the IR blocking filter 140 therein, and may be formed of plastic or metal.

Reflector 120 is formed of a metal or plastic triangular cross-section body and the upper surface is mounted on the inner lower side of the holder 110 has a high reflectivity on both sides, for example, silver (Ag), aluminum (Al) , Magnesium oxide or the like is coated.

Accordingly, the reflector 120 may perform a function of reflecting the image information input through the first lens group 130 and the second lens group 131 at a predetermined angle and transferring the image information to the image sensor 150.

Each of the first lens group 130 and the second lens group 131 is provided to correspond to both sides of the holder 110 including a plurality of lenses, and is fixedly mounted or the first lens group as shown in FIG. 2. 130 and the second lens group 131 may rotate together with the reflector 120 along the circumferential direction of the holder 110. Accordingly, the first lens group 130 and the second lens group 131 may be rotated 360 degrees to capture an image.

The IR blocking filter 140 is provided between the first lens group 130 and the reflector 120 to be in contact with the first lens group 130 and between the second lens group 131 and the reflector 120. The IR blocking filter 140 is provided in contact with the group 131, and since the infrared ray includes heat, the IR blocking filter 140 protects the image sensor 150 by lowering the transmittance of the infrared ray and increasing the reflectance. It increases the transmittance to perform a function to collect a lot of image information in the image sensor 150.

The image sensor 150 may include, for example, a CMOS image sensor (CIS), mounted on the PCB 160 using an adhesive made of epoxy, which is a non-conductive material, and reflected through the reflector 120. By receiving the image information, for example, it can perform a function of converting the electrical signal suitable for the PCB 160 to transmit or process. Here, the image sensor 150 is mounted on the PCB 160 as shown in FIG. 2 and electrically connected to the PCB 160 by wire bonding, or on the PCB 160 using an electroconductive paste. It may be flip chip bonded.

The PCB 160 includes a plurality of circuit patterns (not shown) and transmits the converted image information to the controller (not shown) of the camera module using the image sensor 150.

In the camera module 100 according to the exemplary embodiment of the present invention configured as described above, an image input through each of the first lens group 130 and the second lens group 131 is reflected by the reflector 120 such that the image sensor 150 is included. ), And the image information transmitted to the image sensor 150 is converted into an electrical signal suitable for the PCB 160 and transferred to a controller (not shown) of an externally provided camera module. Here, the controller of the camera module separately stores and edits image information received through each of the first lens group 130 and the second lens group 131, or the first lens group 130 and the second lens group ( 131) The image information inputted through each of the images may be corrected, for example, by correcting the overlapped portions of each image, combining them into one image, and correcting the image information into one image information.

Hereinafter, a camera module according to another exemplary embodiment of the present invention will be described in detail with reference to FIG. 3.

As shown in FIG. 3, the camera module 200 according to another embodiment of the present invention includes a first lens group 231, a second lens group 232, and a first lens group 231 each having a plurality of lenses. ) And a holder 210 for supporting the second lens group 232, a first right angle prism 221 for total reflection of the image received through the first lens group 231, and then transmitted to the image sensor 251. The second right-angle prism 222, the first lens group 231, and the second lens group 232, respectively, for total reflection of the image received through the second lens group 232 and transmitted to the image sensor 251. It is configured to include an IR blocking filter 240, and a PCB 261 provided.

The holder 210 mounts the first lens group 231 and the second lens group 232, each having a plurality of lenses, on both sides, and the first lens group 231 and the second lens group 232. It is a housing member made of plastic or metal provided with a stage (not shown) for mounting the IR blocking filter 240 therein, and has a first right angle prism 221 and a second right angle prism 222 at an inner center thereof. The partition which can be mounted is formed.

The first orthogonal prism 221 and the second orthogonal prism 222 are mounted to both sides of the partition wall provided in the inner center of the holder 210 to respectively connect the first lens group 231 and the second lens group 232. By reflecting the image information respectively received at right angles using the total reflection principle of the rectangular prism through the image information, the image information is transmitted to the image sensor 251.

Each of the first lens group 231 and the second lens group 232 is provided to correspond to both side surfaces of the holder 210 including a plurality of lenses, and is fixedly mounted or the first lens group as shown in FIG. 3. 231 is fixed, and the second lens group 232 may capture an image while rotating along the circumferential direction of the holder 210 along with the second right angle prism 222.

The IR blocking filter 240 is provided between the first lens group 231 and the first right angle prism 221 in contact with the first lens group 231, and the second lens group 232 and the second right angle prism 222 respectively. Between the second lens group 232 is provided in contact with the IR blocking filter 240, since the infrared rays include heat to protect each image sensor 251 by lowering the transmittance and reflectance of the infrared ray The transmittance of the visible light region to be recognized is increased to collect a lot of image information in the image sensor 251.

The image sensor 251 may use, for example, a CMOS image sensor (CIS), mounted on the PCB 261 using an adhesive made of epoxy, which is a non-conductive material, and the first right angle prism 221. And receives the image information totally reflected through the second right angle prism 222 and converts the image information into an electrical signal suitable for the PCB 261 and transmits or processes it.

Here, the image sensor 251 may be electrically connected to the PCB 261 by wire bonding as shown in FIG. 3, or may be flip bonded using an electroconductive paste.

The PCB 261 includes a plurality of circuit patterns (not shown) and transmits the converted image information to the control unit (not shown) of the camera module using the image sensor 251.

The camera module 200 according to another embodiment of the present invention configured as described above has an image input through each of the first lens group 231 and the second lens group 232 such that the first right angle prism 221 and the second right angle prism are included. 222 is totally reflected and transferred to the image sensor 251, and the image information transmitted to the image sensor 251 is converted into a digital signal that can be processed by a controller mounted on the PCB 261.

Here, the controller of the camera module mounted on the PCB 261 may separately store, edit, or correct the transferred image information, for example, the first right angle prism 221 and the second right angle prism 222. When the reflected image is formed on the image sensor 251, the connection portions may be spaced apart or overlapped, so that the correction may be performed by correcting the image into a single image.

Therefore, according to the present invention, by providing a camera module capable of photographing in both directions using one holder, since the space can be utilized more efficiently than the conventional method of photographing using two camera modules, the camera module is mounted. The mobile communication terminal can be designed more freely.

Although the technical spirit of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above embodiment is for the purpose of illustration and not for the purpose of limitation.

In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As described above, the present invention can efficiently utilize space by providing a camera module capable of photographing in both directions using one holder, and more freely design a mobile communication terminal equipped with a camera module.

Claims (8)

A holder for supporting the first lens group and the second lens group on both sides; A reflecting member for reflecting image information input through the first lens group and the second lens group; And An image sensor for processing the image information reflected by the reflective member as a digital signal, The reflective member is mounted inside the holder, At least one of the first lens group and the second lens group is rotated along the circumferential direction of the holder. The method of claim 1, And an IR cut-off filter separately provided inward for each of the first lens group and the second lens group. The method of claim 1, wherein the reflective member One side is mounted on the inner center of the holder and is a reflector coated with a material having high reflectivity on both sides, The material with high reflectance is Camera module, characterized in that the material of at least one of silver (Ag), aluminum (Al), magnesium oxide. delete The method of claim 1, wherein the reflective member A first rectangular prism for total reflection of the image introduced through the first lens group; And And a second right angle prism for total reflection of the image received through the second lens group. A holder for supporting the first lens group and the second lens group on both sides; A reflecting member for reflecting image information input through the first lens group and the second lens group; And An image sensor for processing the image information reflected by the reflective member as a digital signal, And the first lens group and the second lens group are integrally rotated along the circumferential direction of the holder. A holder for supporting the first lens group and the second lens group on both sides; A reflecting member for reflecting image information input through the first lens group and the second lens group; And An image sensor for processing the image information reflected by the reflective member as a digital signal, Any one of the first lens group and the second lens group is rotated along the circumferential direction of the holder. A holder for supporting the first lens group and the second lens group on both sides; A reflecting member for reflecting image information input through the first lens group and the second lens group; And An image sensor for processing the image information reflected by the reflective member as a digital signal, When the reflection member is provided in plural, the control unit for performing a panoramic correction to edit the connection portion of the image information, respectively reflected by the reflection members and processed by the image sensor, to modify to one image information Camera module, characterized in that it further comprises.

Images