KR20120042517A - Housing, barrel and camera module with the same - Google Patents

Abstract

PURPOSE: A camera, a barrel, and a camera module are provided to reduce the inflow of foreign materials into a filter or an image sensor. CONSTITUTION: A lower member includes a lower trap(113) and an upper trap(115). The upper trap includes a first hollow part having first width. The lower trap is formed to a lower end of a gap between the lower trap and a barrel. The upper trap is formed to an upper end of a gap between the upper trap and the barrel. A second hollow is formed to an upper member.

Description

Housing, barrel and camera module with same {HOUSING, BARREL AND CAMERA MODULE WITH THE SAME}

The present invention relates to a camera module, and to a housing, a barrel and a camera module having the same, which can reduce the introduction of foreign matter.

The camera module includes a housing having a hollow portion communicating with the outside inside, a filter provided inside the housing to block infrared rays, and coupled to the housing to be exposed to the outside through the hollow portion, thereby converting an image of the subject into an electrical signal. An image sensor and a barrel slidably coupled to an inner wall of the housing in an optical axis direction.

The camera module has an autofocusing function to adjust the distance between the barrel and the image sensor so that the subject is clearly captured by the image sensor.

When the camera module implements the autofocus function, the position on the subject captured by the image sensor is changed according to the position of the subject. That is, the position where the image is formed changes depending on the distance between the subject and the barrel. At this time, the barrel has a relatively moving structure to implement a clear image in the image sensor.

Since the barrel moves up and down within the housing, a space is formed between the barrel and the housing to prevent friction and collision between the barrel and the housing, and foreign matter enters into the filter and the image sensor.

As a result, the image sensor may cause a problem such as a shadow caused by a foreign material, not an image of a subject to be photographed.

The present invention is to provide a housing, a barrel and a camera module having the same that can reduce the inflow of foreign matter into the filter or image sensor.

According to an aspect of the present invention, in a housing into which a barrel is inserted, a first hollow portion having a first width is formed, and a lower portion formed concave at a lower end thereof, which is a gap lower portion formed between the barrel to collect dust. A lower member having a trap and an upper trap recessed downwardly at an upper end thereof in a gap formed between the barrel to collect dust; And a second hollow part having a second width formed larger than the first width, and an upper material formed stepwise with the first hollow part.

In addition, according to another aspect of the invention, the lower member is provided with a lens; And a top portion provided on the top of the bottom member, the width of which is greater than the width of the bottom member and is formed stepwise.

In addition, according to another aspect of the present invention, a barrel including a lower member provided with a lens, and the upper member provided on the upper end of the lower member, the width is larger than the width of the lower member; And a lower member having a first hollow portion having a first width, the lower member having an upper trap formed concave downward at an upper end thereof in a gap formed between the barrel so as to collect dust, and larger than the first width. There is provided a camera module including a housing including a second hollow portion having a second width formed therein and an upper material formed stepwise with the first hollow portion.

The lower trap may be formed along the circumference of the first width, and the upper trap may be formed along the circumference of the second width.

In addition, a protrusion may be formed on the upper trap so that dust collected in the upper trap does not move to the lower member.

In addition, the protrusion may be bent in the inner direction of the upper trap.

In addition, the upper member may be inclined to increase in width toward the lower side.

In addition, the lower member may further include a lower trap formed concave at a lower end of the lower portion between the barrel and the gap to collect dust.

In addition, the protrusion may be located inside the outer side of the upper member.

According to an embodiment of the present invention, by attaching the foreign matter before the foreign matter is introduced into the filter or the image sensor to reduce the shadow generated by the foreign matter, even if the frequency of use of the camera module increases, it is possible to take a clear image as in the beginning have.

1 is a perspective view showing a housing according to an embodiment of the present invention.
2 is a cross-sectional view showing a housing according to an embodiment of the present invention.
Figure 3 is a perspective view of a barrel according to an embodiment of the present invention.
4 is a front view showing a barrel according to an embodiment of the present invention.
5 is a perspective view showing a camera module according to an embodiment of the present invention.
6 is a cross-sectional view showing a camera module according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, an embodiment of a housing, a barrel, and a camera module having the same according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding components will have the same reference numerals. And duplicate description thereof will be omitted.

1 is a perspective view showing a housing 100 according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a housing 100 according to an embodiment of the present invention. Referring to FIG. 1, the housing 100 includes a lower member 110 and an upper member 120. A barrel (see FIG. 6) 200 may be inserted into the housing 100.

For convenience of understanding and explanation, the lower member 110 and the upper member 120 will be described separately. The lower member 110 and the upper member 120 may be injection molded integrally.

The lower member 110 and the upper member 120 may be formed as a single rectangular parallelepiped, and the hollow portions inside the rectangular parallelepiped may be divided into upper and lower sides having different widths. Upper and lower upper and lower widths may form a step.

The lower member 110 is formed with a first hollow portion 111 having a first width. The lower member 110 includes a lower trap 113 and an upper trap 115.

The housing 100 having an outer rectangular parallelepiped shape is formed at the upper end of the lower member 110 in which the upper member 120 and the lower member 110 are bent when the inside is stepped from the upper member 120 to the lower member 110. The upper trap 115 may be formed. A lower end of the lower member 110 may be bent inwardly to support the barrel 200, and a step may be formed, and a lower trap 113 may be formed in an area bent by the step.

For example, the filter 311 may be defined as a dust inflow inhibiting area. The lower trap 113 and the upper trap 115 may be coated with an adhesive material so that foreign matter is attached before entering the dust inflow inhibiting area. In contrast, the lower trap 113 and the upper trap 115 may be attached to the adhesive film.

The lower trap 113 is formed concave at the lower end of the lower member 110, which is a lower portion of the gap formed between the barrel 200 to collect dust. An adhesive material may be formed on the lower trap 113 along the concave circumferential surface.

The lower trap 113 may be formed along the first inner diameter R1 that is the circumference of the first width when the lower member 110 is cylindrical. The lower trap 113 may be formed in a ring shape, and may shield foreign substances introduced into the dust inflow inhibiting area from all sides. The shape of the lower trap 113 is not limited to the ring shape. In addition to the ring shape, there are various variations such as forming a closed rectangular border or an elliptical border.

The upper trap 115 is recessed downwardly at the upper end of the lower member 110 of the gap formed between the barrel 200 to collect dust. An adhesive material may be formed on the upper trap 115 along the concave circumferential surface.

The upper trap 115 may be formed along the second inner diameter R2 that is the circumference of the second width when the lower member 110 is cylindrical. The upper trap 115 may be formed in a ring shape, and may shield foreign substances introduced into the dust inflow inhibiting area from all sides. The shape of the upper trap 115 is not limited to the ring shape. In addition to the ring shape, there are various variations such as forming a closed rectangular border or an elliptical border.

A protrusion 116 may be formed on the upper trap 115 so that dust collected in the upper trap 115 does not move to the lower member 110. The protrusion 116 will be described later.

The upper member 120 has a second hollow portion 121 having a second inner diameter R2 formed larger than the first inner diameter R1 so as to be stepped with the first hollow portion 111. Accordingly, the inside of the housing 100 has a first hollow portion 111 having a first inner diameter R1 is formed in the lower portion of the housing 100 and extends thereon to have a second hollow portion having a second inner diameter R2. 121 is formed.

The structure of the housing 100 according to an aspect of the present invention has been described above. Hereinafter, the structure of the barrel 200 according to an aspect of the present invention will be described.

3 is a perspective view of a barrel 200 according to an embodiment of the present invention, Figure 4 is a front view showing a barrel 200 according to an embodiment of the present invention. 3 and 4, the barrel 200 includes a lower member 210 and an upper member 220.

Barrel 200 according to an embodiment of the present invention may be fixed to one or more lenses therein. The barrel 200 allows a light source through the lens to enter the image sensor described later. Problems such as shadows are generated when foreign matters flow into the dust inflow prevention area, so it is necessary to prevent dust from entering the dust inflow prevention area. The barrel 200 may form a step to prevent dust from flowing into the dust inflow inhibiting area. This is described below.

The lower member 210 has a lens therein. The lower member 210 may have a cylindrical shape. The lower member 210 may have a shape in which a plastic injection molded product supports a lens made of plastic or glass from the outside.

The upper member 220 is provided above the lower member 210. The upper member 220 is wider than the width of the lower member 210 and is formed stepped. The upper member 220 may form a step with the lower member 210 to achieve an eave shape. When dust is introduced from the upper portion of the upper member 220, the upper member 220 and the lower member 210 may be stepped to prevent the dust from entering the outer inner lower portion of the upper member 220.

The upper member 220 may be inclined such that its width becomes larger toward the lower portion. The upper member 220 may have a shape of a disc whose outer peripheral surface is inclined.

The structure of the housing 100 and the barrel 200 according to an aspect of the present invention has been described above. Hereinafter, the structure of the camera module 300 according to an aspect of the present invention will be described.

5 is a perspective view of a camera module 300 according to an embodiment of the present invention, Figure 6 is a cross-sectional view showing a camera module 300 according to an embodiment of the present invention. Here, the overlapping description of the same configuration having the same function as the above-described housing 100 and the barrel 200 will be omitted. 5 and 6, the camera module 300 includes a filter 311, a barrel 200, and a housing 100.

Camera module 300 according to an embodiment of the present invention may be provided with a printed circuit board (not shown). The printed circuit board may be electrically connected to the main board (not shown), and an image sensor (not shown) may be connected to the upper portion of the printed circuit board by wire bonding to package the printed circuit board and the image sensor.

The filter 311 may be mounted on the image sensor.

The filter 311 is configured to remove unnecessary noise among light sources flowing into the image sensor and is provided on a path from the lens to the image sensor. The filter 311 may be disposed above the image sensor, which is an inner lower end of the housing 100. The filter 311 may be coupled to the housing 100 by an adhesive or the like.

The barrel 200 is disposed above the filter 311. The barrel 200 includes a lower member 210 and an upper member 220. The upper member 220 may form a step with the lower member 210 to achieve an eave shape. When dust is introduced from the upper portion of the upper member 220, the upper member 220 and the lower member 210 may be stepped to prevent the dust from entering the outer inner lower portion of the upper member 220.

A filter 311, an image sensor, and a printed circuit board may be mounted at an inner lower end of the housing 100, and a barrel 200 may be accommodated at an upper portion of the filter 311, which is an upper end of the housing 100.

The housing 100 includes a lower member 110 and an upper member 120. The lower member 110 is formed with a first hollow portion 111 having a first inner diameter R1. The upper member 120 has a second hollow portion 121 having a second inner diameter R2 formed larger than the first inner diameter R1 to be stepped with the first hollow portion.

Inside the lower member 110 and the upper member 120, the barrel 200 is movably held up and down in the optical axis direction. This is because the barrel 200 is slid inside the housing 100 so that the barrel 200 is focused. As a result, the image incident on the image sensor is automatically focused so that the image is not blurry and clear.

In order to realize the autofocus function, for example, a voice coil motor (VCM) may be used as a separate driving source. In addition, various modifications such as piezoelectric actuators are possible.

When the barrel 200 is formed in a circular shape, the inner side of the housing 100 accommodating the barrel 200 is also formed in a circular hollow correspondingly.

On the other hand, a gap is formed between the barrel 200 and the housing 100 so as not to interfere with the movement of the barrel 200 inside the housing 100. Foreign matter enters the filter 311 or the image sensor through the gap, which is a gap, and a shadow caused by the foreign matter may be formed on the actually photographed image.

In order to reduce shadows caused by foreign matters, the housing 100 includes an upper trap 115 and a lower trap 113 where an adhesive is formed to attach the foreign matters before the foreign matters enter the filter 311 or the image sensor. Include.

The upper trap 115 is formed in the gap between the barrel 200 and the lower member 110 so as to collect dust, it is formed concave downward on the upper end of the lower member 110. The lower trap 113 is formed in a gap between the barrel 200 to collect dust, and is formed concave at the lower end of the lower member 110.

The diameter of the upper trap 115 is formed larger than the diameter of the lower trap 113. When viewed from the top, it is as if the lower trap 113 is formed inside the upper trap 115. The upper trap 115 and the lower trap 113 are disposed above and below, respectively, and the widths of the right and left circumferences are formed differently.

When the dust moves from the upper trap 115 to the lower trap 113, the upper trap 115 is formed to the outside than the lower trap 113, and should be moved downward after bending inward from the upper trap 115. Accordingly, the movement path of the dust has a shape that is bent like an "S" having a bend rather than a straight line, and thus the movement of the dust is not easy. In particular, since the movement path of the dust is blocked by the protrusion 116, it is not easy.

Here, the protrusion 116 may be formed along the inner circumferential surface of the upper trap 115, and may be bent toward the inner side of the upper trap 115 in the barrel 200 direction. The protrusion 116 may be located inside the outer side of the upper member 220. As a result, the path through which the dust can move is blocked, so that the inflow of dust can be reduced.

A shield S covering the housing 100 may be further provided at an outer upper end of the housing 100, and the shield S may have an opening so that a light source is incident on the barrel 200. The housing 100 may be accommodated and installed in the shield S.

The housing, the barrel, and the camera module having the same according to the exemplary embodiment may reduce the occurrence of the shadow caused by the foreign matter on the image sensor by attaching the foreign matter on the upper and lower traps before the foreign matter is introduced into the image sensor. Accordingly, even if the frequency of use of the camera module increases, it is possible to capture a clear image as in the beginning of use.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

Many embodiments other than the above-described embodiments are within the scope of the claims of the present invention.

100: Housing
110: lower part
111: first hollow part
113: lower trap
115: upper trap
120: upper material
121: second hollow part
200: barrel
210: lower member
220: top member
300: camera module
311: filter

Claims (12)

In the housing into which the barrel is inserted,
A first hollow portion having a first width is formed, and a lower trap formed concave at a lower end thereof, which is lower than a gap formed between the barrel to collect dust, and a gap formed between the barrel to collect dust. A lower member having an upper trap formed to concave downward at an upper end thereof; And
And a second hollow portion having a second width formed larger than the first width, wherein the upper portion is formed to be stepped with the first hollow portion.
The method of claim 1,
The lower trap is formed along the circumference of the first width,
The upper trap is characterized in that the housing is formed along the circumference of the second width.
The method of claim 1,
And a protrusion is formed in the upper trap so that dust collected in the upper trap does not move to the lower member.
The method of claim 3,
The protrusion is bent in the inward direction of the upper trap housing.
A lower member provided with a lens; And
Barrels provided on top of the lower member, the width is larger than the width of the lower member and including a top member formed stepped.
The method of claim 5,
The upper member is a barrel, characterized in that the inclined so that the width becomes larger toward the bottom.
A barrel including a lower member provided with a lens and an upper member provided on an upper portion of the lower member and having a width greater than the width of the lower member; And
A lower member having a first hollow portion having a first width, the lower member having an upper trap formed concave downward at an upper end thereof in a gap formed between the barrel to collect dust, and larger than the first width; And a second hollow part having a second width, the housing including a housing formed to be stepped with the first hollow part.
The method of claim 7, wherein
The lower member further comprises a lower trap formed concave at a lower end thereof, which is a lower portion of the gap formed between the barrel to collect dust.
The method of claim 8,
The lower trap is formed along the circumference of the first width,
The upper trap is a camera module, characterized in that formed along the circumference of the second width.
The method of claim 7, wherein
A camera module, characterized in that a projection is formed inside the upper trap so that dust collected in the upper trap does not move to the lower member.
The method of claim 10,
The projection is a camera module, characterized in that located on the inner side than the outer edge of the upper member.
The method of claim 7, wherein
The upper member is a camera module, characterized in that the inclined so that the width becomes larger toward the bottom.

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