KR20160077375A - Camera module actuator - Google Patents

Abstract

The present invention relates to a soldering device for a camera module. More specifically, the soldering device for a camera module has a means to control pressure applied to a camera module in a soldering process. The present invention comprises: a base; a lens holder; a lens; and a cover having a first through-hole.

Description

[0001] CAMERA MODULE ACTUATOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a camera module driving apparatus, and more particularly, to an internal structure of a device for driving a camera module used for iris recognition and a form of component parts.

Recently, in the field of security system, a method of performing authentication using an iris irritation of an individual is often used.

A person's iris has a unique pattern for each individual, so that accurate identification is possible.

As described above, the authentication method using the iris has an advantage that authentication can be performed in a non-contact manner, unlike a fingerprint.

In order to secure good discrimination, iris imaging is required to be photographed so as to fall within a certain category of image quality. Accordingly, various types of camera modules have been proposed.

For example, the image of the face is recognized by pattern matching or the like among the images of the subject photographed by the wide-angle camera, the position of the right eye or the left eye is calculated from the image of the face, and the narrow- And an auto focus camera module drive device designed to focus the iris with high precision using an auto focus technique has been proposed.

However, such an auto-focus camera module is cost-effective because it has a plurality of cameras simultaneously in one driving device for iris recognition and moves the subject before moving the lens so that the focus is shifted, Since the driving for matching needs to be repeated, it takes a relatively long time to acquire an image.

As a result, it can be said that there is a disadvantage over the merits that can be obtained by using an auto-focus camera using a zoom in / out and a tilt to construct an auto-focus iris imaging apparatus.

On the other hand, a camera module for fixed-focus iris recognition, which is more economical than an auto-focus type camera module for iris recognition, has been proposed.

In particular, the fixed focus type camera module is developed for use in a small electronic device such as a mobile phone, and is more advantageous than an auto focus type because it has a very small size and an ultra-thin size.

However, it is essential to improve the recognition accuracy of the focal length deviation because the fixed focus type camera module needs to adjust the focal distance suitable for the iris photography by the user unlike the auto focus type.

For this purpose, when manufacturing a camera module drive, focusing of the lens on the focal length is particularly important.

In a fixed focus camera module, the focusing of the lens with respect to the focal length is generally controlled by the screwing height between the threaded lens and the corresponding threaded lens holder.

However, in order to adjust the focusing through the screw coupling, the shape of the lens should be a cylindrical shape, that is, a circular shape in cross section. However, in the case of a non-cylindrical iris recognition lens, it is impossible to adjust the focusing through the above-

In addition, since it is difficult to precisely control the focusing through the screw coupling, it is required to develop a camera module driving device for iris recognition that can provide accurate focusing control.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a driving device of a camera module configured to enable precise focus adjustment of a lens for iris recognition and an internal structure of the camera module driving device and a form of components.

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: a base having a guide formed on an inner wall surface and extending in a vertical direction; A lens holder installed to be movable up and down along the guide of the base and forming a space for installing a lens therein; A lens installed in the lens holder; And a cover provided on the lens holder and having a first through hole that can receive light, wherein the lens holder includes a camera module driving device having a driving unit for moving the lens holder in the up and down direction Can be provided.

Here, the lens holder can be moved up and down by the rotational driving of the driving unit.

In this case, an adhesive fill groove is formed in at least a part of the entire area of the inner wall surface of the lens holder, and the lens holder and the lens can be fixed as the adhesive injected into the adhesive fill groove is cured.

Here, the groove for filling the adhesive may be formed at a position corresponding to each corner of the lens provided in the lens holder.

At least one protrusion protrudes from at least another region of the entire inner wall surface of the lens holder where the groove for filling the adhesive is not formed. The lens is fixed to the lens holder by the protrusion formed on the inner wall surface of the lens holder, As shown in Fig.

Here, a fixing hook is formed in at least a part of an entire area of the inner wall surface of the lens holder, a fixing protrusion is formed on an outer wall surface of the lens at a position corresponding to the fixing hook, As the fixing protrusion of the lens is latched, the lens holder and the lens can be fastened.

Here, the driving unit may be installed to be inserted into one side of the lens holder along the height direction of the lens holder, and the cover may include a second through hole for exposing the driving unit.

Here, a top elastic member for elastically supporting the lens holder may be provided on the lens holder.

Here, the driving unit may be installed below the lens holder, and an upper elastic member may be provided on the upper portion of the lens holder to elastically support the lens holder.

Here, the driving unit may be driven by a cam method.

Here, a third through hole for exposing the driving unit may be formed at a lower portion of the base.

Here, the driving unit is installed in the lens holder, and a lower elastic member for elastically supporting the driving unit is provided at a lower portion of the driving unit, and the cover includes a second through hole for exposing the driving unit .

The fixed-focus type iris recognition camera module driving apparatus according to the present invention can more precisely control the focusing through a simple operation than the focusing control by screwing the lens and the lens holder, thereby further improving the recognition accuracy according to the focal- .

1 is an exploded perspective view of a camera module driving apparatus according to an embodiment of the present invention.
2A is a perspective view of a lens holder of a camera module driving apparatus according to an embodiment of the present invention.
FIG. 2B is a plan view of the lens holder shown in FIG.
3A is a perspective view of a lens holder of a camera module driving apparatus according to another embodiment of the present invention.
FIG. 3B is a perspective view of a lens (iris recognition lens) installed in the lens holder according to FIG. 3A.
FIG. 3C is a plan view of the lens holder shown in FIG. 3A, in which the lens shown in FIG. 3B is installed.
FIG. 4A is a schematic view illustrating focusing control of a camera module driving apparatus according to an embodiment of the present invention.
4B is a perspective view of the camera module driving apparatus shown in FIG. 4A.
4C is a cross-sectional view of the camera module drive device shown in FIG. 4B.
5 is a perspective view of a camera module driving apparatus according to another embodiment of the present invention.
6A is a perspective view of a camera module driving apparatus according to another embodiment of the present invention.
6B schematically shows focusing control of the camera module driving device shown in Fig. 6A.
7A is a perspective view of a camera module driving apparatus according to another embodiment of the present invention.
Fig. 7B schematically shows focusing control of the camera module driving device shown in Fig. 7A.

Certain terms are hereby defined for convenience in order to facilitate a better understanding of the present invention. Unless otherwise defined herein, scientific and technical terms used in the present invention shall have the meanings commonly understood by one of ordinary skill in the art. Also, unless the context clearly indicates otherwise, the singular form of the term also includes plural forms thereof, and plural forms of the term should be understood as including its singular form.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

The present invention relates to a camera module driving apparatus, and more particularly to a fixed-focus iris recognition camera module driving apparatus.

1 is an exploded perspective view of a camera module driving apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the lens 13 is fixed in the lens holder 12, and the lens holder 12 is installed in a base 11 having a guide 11a extending in the vertical direction on the inner wall surface.

At this time, the lens holder 12 is installed so as to be movable up and down within the base 11 along the guide 11a.

In other words, unlike the conventional fixed focus type camera module driving device in which a lens threaded along the outer circumferential surface is screwed to a lens holder having a thread formed along the inner circumferential surface, the camera module driving device according to the present invention includes a lens 13, The holder 12 is configured so as to be vertically movable in the base 11 integrally with each other, and the focusing can be adjusted by moving the lens holder 12 in which the lens 13 is fixed, in the vertical direction.

Therefore, it is not necessary to operate the lens 13 unnecessarily for adjusting the focusing, which is advantageous in terms of stability.

That is, it can be said that the present invention has a particular advantage that the focusing can be difficult, for example, when the shape of the lens is not cylindrical, through screw coupling between the lens and the lens holder.

The lens holder 12 is provided with a drive unit 16 for moving the lens holder 12 in the vertical direction in the base 11. [

Through various modifications, the drive unit 16 can be implemented in various ways, such as with screws, bolts or gears.

The drive unit 16 may be inserted into the lens holder 12 or attached to the side surface of the lens holder 12 and may be attached to the side surface of the lens holder 12 by the power of the drive unit 16 for moving the lens holder 12 up and down The delivery method may be changed.

For example, the driving unit 16 can move the lens holder 12, in which the lens 13 is inserted, by a predetermined distance in the vertical direction through rotational driving by the power received from the internal or external power source .

In this case, the predetermined distance means a moving distance of the lens 13 in the up-and-down direction required for adjusting the focusing according to the focal distance. For example, the moving distance may be about 0.1 mm.

When the drive unit 16 is inserted into the lens holder 12 and installed, the drive unit 16 is spaced apart from the lens 13 in order to suppress unnecessary friction between the drive unit 16 and the lens 13 .

The upper elastic member 14 may be provided on the lens 13 and the lens holder 12 while the lens 13 is installed and the upper elastic member 14 may be provided on the lens holder 12 by providing a certain elastic force to the lens holder 12 The deviation of the focusing can be prevented.

The lens holder 12 can be moved up and down only by a predetermined height in the base 11 by the elastic force of the upper elastic member 14. [

A cover 15 having a first through hole 15a capable of receiving light is provided after the upper elastic member 14 is installed and the cover 15 includes a member that can be fixed to the base 11 can do.

Finally, a tape 17 is provided on the cover 15 to finally complete the camera module driving device.

The camera module driving apparatus according to the present invention can move the lens holder 12 provided with the lens 13 in the vertical direction within the base 11 by the drive unit 16 And the focusing can be adjusted by moving the lens holder 12 by the drive unit 16 in the up and down direction.

Hereinafter, the internal structure of the camera module driving apparatus according to the present invention and the configuration of the components will be described in more detail.

FIG. 2A is a perspective view of a lens holder 12 according to an embodiment of the present invention, and FIG. 2B is a plan view of the lens holder 12 shown in FIG. 2A in which a lens 13 is inserted.

A groove 12a corresponding to a guide 11a formed on the inner wall surface of the base 11 is formed on the outer wall surface of the lens holder 12 so that the lens holder 12 can be accurately positioned in the vertical direction Enabling movement.

It is also possible to prevent unnecessary movement of the lens holder 12 in the base 11 through accurate engagement of the guide 11a formed on the inner wall surface of the base 11 with the corresponding groove 12a of the lens holder 12, can do. This can be said to be essential for accurate focusing control according to the focal distance of the iris recognition lens 13. [

The lens holder 12 shown in Fig. 2A is to be installed with the drive unit 16 inserted therein. In order to suppress unnecessary friction between the drive unit 16 and the lens 13, I.e., in the insertion hole 12b.

In this case, the insertion hole 12b is formed in one side of the lens holder 12 in the height direction of the lens holder 12, and is formed at the center of any one side of the lens holder 12 do.

Any one side of the lens holder 12 can be formed to bend inwardly by the insertion hole 12b so that the lens 13 is also formed with a groove along the bending of the inner wall surface of the lens holder 12. [ Lt; / RTI >

The projection 12c and the adhesive filling groove 12d are formed on the inner wall surface of the lens holder 12, respectively.

The adhesive filling grooves 12d are formed in at least a part of the entire area of the inner wall surface of the lens holder 12 and the lens 13 is provided in another area where the adhesive filling grooves 12d are not formed, At least one protrusion 12c is protruded so as to be able to be tightly fitted into each other.

2A and 2B, the adhesive filling groove 12d is formed at a position corresponding to each corner of the inner wall surface of the lens holder 12 (each corner of the lens 13 provided in the lens holder 12) And the protrusion 12c can be formed at a position adjacent to the adhesive filling groove 12d.

The lens 13 and the lens holder 12 are completely fixed as the adhesive is hardened and the adhesive agent is injected into the adhesive filling groove 12d in a state in which the lens 13 is tightly inserted into the lens holder 12. [ do.

3A shows a perspective view of the lens holder 12 shown in FIG. 2A and the lens holder 12 according to another embodiment. FIG. 3B shows a lens 13 installed in the lens holder 12 shown in FIG. And FIG. 3C is a plan view of the lens holder 12 shown in FIG. 3A, in which the lens 13 shown in FIG. 3B is installed.

The lens holder 12 shown in Fig. 3A is formed with a fixing hook 12e as a latching means with the lens 13 in at least a part of the entire area of the inner wall surface of the lens holder 12, unlike Fig.

A fixing protrusion 13b is formed on the outer wall surface of the lens 13 at a position corresponding to the fixing hook 12e of the lens holder 12. The fixing hook 12e is fixed to the fixing protrusion 13b ) So that the lens 13 and the lens holder 12 are fastened together.

The lens holder 12 shown in Fig. 3A has no groove for filling an adhesive on the inner wall surface and is fixed to the outer wall surface of the lens 13 in a state where the lens 13 and the lens holder 12 are fastened. And differs from the lens holder shown in Fig. 2A in that the groove for filling the adhesive 12d is formed on the projection 13b.

Any one side of the lens holder 12 can be formed to bend inwardly by the insertion hole 12b so that the lens 13 is also formed with a groove along the bending of the inner wall surface of the lens holder 12. [ Lt; / RTI >

Any one side of the lens holder 12 may be formed to be bent inward by the insertion hole 12b for inserting the drive unit 16. The lens 13 may be fixed to the lens holder 12 The groove 13a may be formed along the curvature of the inner wall surface of the inner wall 13a.

FIGS. 4A and 4B are perspective views of a camera module driving apparatus according to an embodiment of the present invention, and FIG. 4C is a sectional view thereof.

Referring to FIG. 4A, the focus adjustment in the camera module driving apparatus can be roughly confirmed.

The lens 13 is fixed within the lens holder 12 and the lens holder 12 is installed in the base 11 so as to be movable up and down.

At this time, the movement of the lens holder 12 is enabled by the drive unit 16.

The upper elastic member 14 is provided on the lens holder 12 while the lens 13 is fixed in the lens holder 12 and then the cover 15 including the member which can be fixed to the base 11 Is provided on the upper portion of the lens holder 12. [

The upper elastic member 14 is for elastically supporting the lens holder 12 and can be used without limitation as long as it can provide appropriate elastic force for the vertical movement of the lens holder 12. [

Examples of the upper elastic member 14 include springs, plate strings, and crowns.

The cover 15 includes a first through hole 15a capable of receiving light and a second through hole 15b for exposing the driving unit 16 inserted in the insertion hole 12b of the lens holder 12 .

For example, when the drive unit 16 is configured to receive power from the external power source M, the external power source M rotatably drives the drive unit 16 exposed through the second through hole 15b, So that the holder 12 can be moved up and down along the guide 11a of the base 11.

At this time, when the drive unit 16 is a bolt, the external power source M may be a wrench capable of rotating the bolt to the left and right.

5 is a perspective view of a camera module driving apparatus according to another embodiment.

5, the driving unit is installed at the bottom of the lens holder 12, and an upper elastic member 14a such as a foron for elastically supporting the lens holder 12 is installed on the upper portion of the lens holder 12 .

At this time, the drive unit includes gears 16a and 16b driven in a cam style.

More specifically, the drive unit includes an actuating gear 16a and an adjusting gear 16b formed to engage with the actuating gear 16a.

A third through hole 11c is formed in a lower portion of the base 11 to expose the operating gear 16a.

Thus, the external power source can provide a driving force for rotating the operating gear 16a.

When the external power source rotates the operation gear 16a, the adjustment gear 16b formed to be engaged with the external gear 16 is simultaneously rotated to move the lens holder 12 in the vertical direction.

5, since the drive unit is provided at the lower portion of the lens holder 12, the lens holder 12 is provided on one side of the lens 13 like the lens 13 shown in Fig. 3B. It is not necessary to form a groove corresponding to the insertion groove 12b.

FIG. 6A is a perspective view of a camera module driving apparatus according to another embodiment of the present invention, and FIG. 6B is a schematic view illustrating focusing control of the camera module driving apparatus shown in FIG. 6A.

6, the drive unit 16 is installed at the lower portion of the lens holder 12, and the upper portion of the lens holder 12 is provided with a lens holder 12 for holding the lens holder An upper elastic member is provided.

5, the driving unit 16 of the camera module driving apparatus shown in Fig. 6A may include one gear, and one gear may be connected to the driving gear 16a and the adjusting gear 16b of Fig. 5 Role can be performed at the same time.

6A includes a second through hole 15b for exposing the drive unit 16 and the external power source M is connected to the lens holder (not shown) through the second through hole 15b 12 can be rotated.

The power transmitted by the external power source M inserted to the lower portion of the lens holder 12 rotates the drive unit 16 and the lens holder 12 can move in the vertical direction have.

FIG. 7A is a perspective view of a camera module driving apparatus according to another embodiment of the present invention, and FIG. 7B is a schematic view of focusing adjustment of the camera module driving apparatus shown in FIG. 7A.

Here, the drive unit 16 is installed in the lens holder 12 together with the lens 13.

At this time, the drive unit 16 can be driven in the cam style, and the lens module 12 is moved up and down by the rotational drive of the drive unit 16. [

More specifically, when the drive unit 16 is moved downward in the lens holder 12 in accordance with the rotation drive of the drive unit 16, the lens holder 12 moves upward, The lens holder 12 moves downward when the drive unit 16 is moved upward in the lens holder 12 in accordance with the rotation of the lens holder 12 in the opposite direction.

A lower elastic member 14b is provided below the drive unit 16 to elastically support the drive unit 16. [

The cover 15 includes a second through hole 15b for exposing the drive unit 16 and the drive unit 16 exposed by the second through hole 15b is rotated by an external power source M, Can be driven.

The fixed-focus type iris recognition camera module driving apparatus according to various embodiments of the present invention can perform accurate focusing control through manipulation of a focusing operation through screwing of a lens and a lens holder, The accuracy can be further improved.

In addition, the fixed-focus iris recognition camera module driving apparatus according to various embodiments of the present invention is particularly easy to control the focusing of an irregular lens, particularly a non-cylindrical lens.

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 of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

11: Base
12: Lens holder
13: Lens
14: upper elastic member
15: cover
16:

Claims (12)

A base formed on the inner wall surface with a guide extending in the vertical direction;
A lens holder installed to be movable up and down along the guide of the base and forming a space for installing a lens therein;
A lens installed in the lens holder; And
And a cover provided on the lens holder and having a first through hole that can receive light,
Wherein the lens holder is provided with a drive unit for moving the lens holder in the vertical direction.
Camera module drive.
The method according to claim 1,
Characterized in that the lens holder moves up and down by rotational driving of the drive unit.
Camera module drive.
The method according to claim 1,
An adhesive filling groove is formed in at least a part of the entire area of the inner wall surface of the lens holder,
Characterized in that the lens holder and the lens are fixed as the adhesive injected into the adhesive filling groove is hardened.
Camera module drive.
The method of claim 3,
Wherein the groove for filling the adhesive is formed at a position corresponding to each corner of the lens provided in the lens holder.
Camera module drive.
The method of claim 3,
At least one protrusion protrudes from at least another region of the entire inner wall surface of the lens holder where the groove for filling the adhesive is not formed,
Wherein the lens is securely fastened in the lens holder by a projection formed on an inner wall surface of the lens holder.
Camera module drive.
The method according to claim 1,
A fixing hook is formed in at least a part of the entire area of the inner wall surface of the lens holder,
A fixing protrusion is formed on an outer wall surface of the lens at a position corresponding to the fixing hook,
Characterized in that the lens holder and the lens are fastened as the fixing hook of the lens holder and the fixing protrusion of the lens are latched.
Camera module drive.
The method according to claim 1,
Wherein the driving unit is installed on one side of the lens holder so as to penetrate the lens holder along a height direction of the lens holder,
Characterized in that the cover includes a second through hole for exposing the drive unit.
Camera module drive.
8. The method of claim 7,
And an upper elastic member for elastically supporting the lens holder is installed on the upper portion of the lens holder.
Camera module drive.
The method according to claim 1,
Wherein the drive unit is installed at a lower portion of the lens holder,
And an upper elastic member for elastically supporting the lens holder is installed on the upper portion of the lens holder.
Camera module drive.
10. The method of claim 9,
Characterized in that the drive unit is driven in a cam-
Camera module drive.
10. The method of claim 9,
And a third through hole for exposing the driving unit is formed in a lower portion of the base.
Camera module drive.
The method according to claim 1,
Wherein the drive unit is installed in the lens holder,
And a lower elastic member for elastically supporting the drive unit is installed in a lower portion of the drive unit,
Characterized in that the cover includes a second through hole for exposing the drive unit.
Camera module drive.

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