KR101661656B1 - Camera module - Google Patents

Abstract

The present invention relates to a focus camera module, and more particularly, to a camera module having a structure that can be easily manufactured in a camera module having a fixed focus, and can prevent a problem caused when a lens barrel and a lens holder are screw- .

A camera module according to the present invention includes a cylindrical lens barrel having an incident hole through which an optical image of a subject is passed, the lens barrel having a plurality of lenses housed therein, the lens barrel being seated in the lens barrel, And a fixing member mounted on the lens holder so as to surround the lens barrel to prevent vertical movement of the lens barrel.

Camera, no focus

Description

Camera module {CAMERA MODULE}

The present invention relates to a focus camera module, and more particularly, to a camera module having a structure that can be easily manufactured in a camera module having a fixed focus, and can prevent a problem caused when a lens barrel and a lens holder are screw- .

2. Description of the Related Art In recent years, there has been a demand for a small-sized camera module for a variety of multimedia fields such as a notebook type personal computer, a camera phone, a PDA, a smart, and a toy, and furthermore for an image input device such as an information terminal of a surveillance camera or a video take recorder .

As the pixel size of the sensor applied to the camera module is reduced and the height of the module is lowered, management of the foreign matter is controlled and the mechanical reliability of the camera module such as tilt or shift of the lens optical axis is secured The development of a mounting structure for a vehicle is becoming an important issue.

Currently, the most important influence on the reliability of the camera module is the holder. The holder mechanically connects the lens assembly to the sensor and protects the sensor from foreign substances and other impacts. In particular, when the lens barrel and the holder are fastened, reliability is most affected.

4, in order to fasten the lens barrel 4 and the holder 3, the screw 4 'of the lens barrel 4 and the screw 3' of the holder 3 are screw- ), Which are fastened together in accordance with the metric thread standard of the KS standard.

At this time, when the torque specification between the lens barrel 4 and the holder 3 is below the reference standard, the clamping force between the lens barrel 4 and the holder 3 is lowered and the tilt causes the partial resolution Or the resolution may be lowered due to annealing before bonding.

In addition, when the combined togg specification between the lens barrel 4 and the holder 3 is equal to or larger than the reference standard, foreign matter is generated due to the friction between the lens barrel 4 and the holder 3 between the threads 3 'and 4' Focus adjustment may not be possible. Particularly, there is a disadvantage that the foreign matter falls into the holder 3 and defects are caused by foreign substances.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camera module in which a defect caused by the inflow of foreign matter is prevented in a camera module without a focus adjustment.

Another object is to provide a camera module in which fixed focus adjustment is facilitated.

According to an aspect of the present invention, there is provided a camera module including: a cylindrical lens barrel having an incident hole through which an optical image of a subject passes, the lens barrel having a plurality of lenses therein; A lens holder for preventing horizontal movement of the barrel, and a fixing member provided on the lens holder to surround the lens barrel to prevent vertical movement of the lens barrel.

In addition, in the camera module of the present invention, the lens holder is formed with an insertion groove into which one end of the fixing member is inserted and fixed.

Further, the camera module of the present invention is characterized in that it is bonded to a portion where the lens holder and the fixing member are in contact with each other.

In addition, in the camera module of the present invention, the inner bottom surface of the lens holder is provided with an end, and the lens barrel is seated on the end surface.

As described above, according to the present invention, the lens barrel and the holder are fastened to each other without using a screw thread, thereby preventing foreign matters from being generated due to thread engagement.

Further, there is an advantage that the focus of the lens can be finely adjusted simply by the force of pressing the lens barrel.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, a camera module according to an embodiment of the present invention will be described in detail with reference to the drawings, and the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof are omitted.

FIG. 1 is a perspective view of a camera module according to an embodiment of the present invention, FIG. 2 is a partially exploded perspective view of the camera module shown in FIG. 1, and FIG. 3 is a sectional view of the camera module shown in FIG.

As shown in FIGS. 1 and 2, the camera module according to the embodiment of the present invention includes an incidence hole 41 through which an optical image of a subject is passed, and a plurality of A lens holder 30 which is seated inside the lens barrel 40 to prevent the lens barrel 40 from shaking in the horizontal direction and a lens barrel 40 having a vertical And a fixing member 50 installed on the lens holder 30 so as to cover the upper portion of the lens barrel 30 to prevent directional shake.

The fixing member 50 is formed with a through hole 51 communicating with the incident hole 41 of the lens barrel 40.

The lens holder 30 is formed with an insertion groove 31 into which one end of the fixing member 50 is inserted and fixed.

Reference numeral 10 denotes an image sensor, reference numeral 20 denotes an image sensor mounted on the substrate, and the relationship between the image sensor and the substrate is well known.

Referring to FIG. 3, the camera module of this embodiment will be described in detail as follows.

A lens barrel 40 including a plurality of lenses (not shown) is mounted in the lens holder 30. The bottom surface of the lens holder 30 is an end portion of the lens barrel 40. The lens barrel 40 Is mounted on the lower surface of the lens holder 30 on the side 42 where the end of the lens holder 30 faces. The lower surface of the lens holder 30 may be referred to as a bottom surface of the lens holder 30 and the lower surface of the lens barrel 40 may be a portion of the lens holder 30 which is in contact with the bottom surface of the lens holder 30. [ have.

The camera module of this embodiment is a non-focus adjustable camera module that performs camera operation with a fixed focus at the time of initial manufacture. Therefore, when forming the end of the lens holder 30 on the bottom surface, the lens barrel 40 is formed to have a desired focal length so that the lens barrel 40 is seated on the camera holder.

The lens barrel 40 is mounted on the end surface 42 of the lens holder 30 so as to be wrapped around the lens barrel 40 in the drawing, The fixing member 50 is provided so that one end of the fixing member 50 is inserted and fixed in the fixing hole 31. A through hole 51 communicating with the entrance 41 of the lens barrel 40 is formed on the upper surface of the fixing portion 50 in the drawing. It is preferable, but not limited, that the positions of the through holes 51 and the incidence apertures 41 substantially coincide with each other as shown in FIG.

The upper surface of the inner side of the fixing member 50 is brought into contact with the upper surface of the lens barrel 40 and the pressing member 50 is pressed in the vertical direction, And the lens holder 30 are bonded and fixed to each other by using an adhesive agent 52. [ At this time, the fixed focal point has already been determined according to the height of the stepped surface 42 of the bottom surface of the lens holder 30, but a slight error may occur due to the manufacturing tolerance, so that the fixing member 50 is pressed in the vertical direction And one end of the fixing member 50 is inserted into the insertion groove 31 of the lens holder 30 and then fixed to the portion where the fixing member 50 is in contact with the adhesive using the adhesive 52. [

As described above, in the embodiment of the present invention, since the lens barrel and the holder are fastened to each other without using a thread, it is possible to prevent degradation in resolution caused when the combined torque standard is not met and to prevent foreign matter can do.

In addition, by preventing foreign substances by friction, image defects of the camera module can be minimized due to foreign matter.

Particularly, the fixing member 50 has the effect of blocking the inflow of impurities such as dust from the outside.

The embodiment of the present invention described above should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of protection of the present invention as long as it is obvious to those skilled in the art.

1 is a perspective view of a camera module according to an embodiment of the present invention;

Fig. 2 is an exploded perspective view of the camera module shown in Fig.

3 is a cross-sectional view of the camera module shown in Fig. 1

4 is a cross-sectional view illustrating a coupling structure of a conventional camera module

Claims (5)

A lens barrel in which an incident hole for passing an optical image of a subject is formed on one side and a plurality of lenses are accommodated in the lens barrel, A lens holder in which the lens barrel is seated, And a fixing member installed on the lens holder to surround the lens barrel, Wherein the lens holder is formed with an insertion groove into which one side of the fixing member is inserted and fixed, An inner bottom surface of the lens holder has an end, Wherein the lens barrel is seated on the front face of the end, Wherein the fixing member has a through-hole structure communicating with the entrance hole of the lens barrel, The inner side upper surface of the fixing member contacts the upper surface of the lens barrel, And the through-hole structure is located at a position corresponding to the incidence hole. delete 3. The method of claim 2, And the lens holder and the fixing member are bonded to each other. delete The method according to claim 1, Wherein the lens holder prevents horizontal swinging of the lens barrel, Wherein the fixing member prevents vertical movement of the lens barrel.

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