KR20090070763A - Carmera moudule - Google Patents

Abstract

A camera module for photographing an active image is provided to take a picture of the image having clear image or various effects by photographing a subject after closing an incidence hole according to a state of the subject. A camera module for photographing an active image includes a lens part, a holder, a sensor part, an image sensor, a circuit board, and a filter part. The lens part(302) includes a barrel storing at least one lens inside. The holder(310) supporting the lens part has an internal space. The sensor part(312) includes the image sensor and the circuit board. The image sensor(316) converts light passing through the lens to an electric signal. The image sensor is settled on the top of the circuit board. The circuit board is connected with the image sensor electrically. The filter part(324) installed at an optical axis of the lens part disperses the light.

Description

Camera Module {Carmera moudule}

The present invention relates to a camera module.

In general, camera modules (CCM: COMPACT CAMERA MOUDULE), which are applied to various IT devices such as camera phones, PDAs, and smart phones, and TOY CAMERA, are being made compact. Increasingly, mobile communication devices equipped with camera modules having various functions to meet various tastes of consumers are gradually increasing.

1 is a cross-sectional view showing a camera module of the prior art.

As shown in FIG. 1, the camera module 100 includes a lens unit 102, a lens driving unit (VCM) 108, a holder 110, and a sensor unit 112.

First, the lens unit 102 is provided on at least one lens 104, a barrel 106 for embedding the lens 104 in the body interior space, and an outer peripheral surface of the upper end of the barrel 106 and is incident on the center of the upper surface. Ball (not shown) formed.

Here, the cap is formed with a female threaded portion on the inner surface and screwed with the male threaded portion formed on the outer surface of the barrel 106 opened barrel 106 so that the lens 104 provided in the interior of the barrel 106 does not escape to the outside. Block the top of the).

On the other hand, the lens driving unit 108 includes a male portion 105 formed on the outer surface of the barrel 106 of the lens portion 102 by including the lens portion 102 therein and forming a female screw portion 107 therein. By screwing, the barrel 106 is moved to the optical axis to focus on the subject.

In addition, an inner space is formed in the holder 110.

The sensor unit 112 converts light for a subject incident through the lens 104 into image data, which is an electrical signal, and transmits the image data to a display means (not shown) such as an LCD.

To this end, the sensor unit 112 includes an IR filter (Infrared Filter) 114, an image sensor 116 and a circuit board 118, the IR filter 114, the light of the subject passing through the lens 104. The image sensor 116 detects light of the subject filtered by the IR filter 114 and converts the light into electrical image data.

Here, the light of the subject is focused as the barrel 106 is moved in the optical axis direction by the lens driver 108.

The image sensor 116 is also mounted on the upper surface of the circuit board 118, such as a flexible printed circuit board (FPCB), which is a means for transmitting image data.

Accordingly, the image data converted by the image sensor 116 is transmitted to the display means through the circuit board 118.

Here, it is preferable that a connector 120 to which a device such as a display means can be connected is formed at one end of the circuit board 118.

As described above, the camera module embedded in the mobile phone of the prior art is used to capture an image by taking a simple person-oriented subject, etc., and there is a limitation in design to implement performance beyond that function.

On the other hand, as digital compact cameras are spread to consumers smoothly, the quality of images felt by consumers continues to improve, while the mobile phone camera module remains at a level that follows the pixels of digital compact cameras. It is used as a simple image correction level such as color saturation, brightness, negative, mono and sepia.

The lens applied to the mobile phone camera module is getting smaller in size. To date, the lens does not have a filter that protects the surface of the lens. As it is included, it detects even the unnecessary wavelength range (near infrared region ~ 1150nm) in the image.To solve this problem, it is located at the upper part of the image sensor and the lower lens to remove the wavelength of the near infrared region irrelevant to actual color or image. Use an IR filter.

Such IR filters do not serve to protect the lens surface.

When photographing a subject using the camera module of the mobile phone as described above, as illustrated in FIGS. 2A and 2B, there is a problem in that a sharp image or an image having various effects cannot be photographed.

2A and 2B are images taken by using a camera module of the prior art.

The present invention relates to a camera module for capturing a dynamic image such as clear image quality and light scattering.

The present invention relates to a camera module for capturing a subject after the lens unit, the lens driving unit, the holder, and the sensor unit are included therein to close the entrance hole with the filter unit according to whether the subject is photographed.

According to the present invention, the lens unit, the lens driver, the holder, and the sensor unit may be included therein to close the entrance hole with the filter unit according to whether the subject is photographed, and then photograph the subject to capture a clear image or an image having various effects.

The present invention comprises at least one lens (lens); And a lens unit including a barrel in which the lens is embedded in the inner space, a holder supporting the lens unit and having an inner space formed therein, and an image sensor detecting light passing through the lens and converting the light into an electrical signal. And a sensor unit including a circuit board on which the image sensor is seated on an upper surface of the lens unit, the circuit board being electrically connected to the holder and sealing the internal space, and installed on an optical axis of the lens unit. Contains wealth.

In the present invention, the lens unit, the holder and the sensor unit is mounted on the circuit board so as to be included in the inner space further comprises a housing for dispersing light for the subject in a predetermined direction.

In the present invention, the housing is an entrance hole for receiving the light of the subject; At least one open / close handle extending on one side of the filter part to move the filter part between an open position of the incident hole and a closed position of the incident hole; And at least one guide hole for exposing the opening / closing handle and guiding the opening / closing handle, and including a filter protection part for protecting the filter part, wherein the filter part is closed position of the incident hole by the opening / closing handle or Is moved to the open position.

In the present invention, the incident hole corresponds to the lens in the optical axis direction.

The sensor unit may further include an IR filter included in an inner space of the holder to filter light of the subject passing through the lens, and the filter unit may be a cross filter.

In addition, the present invention further includes a lens driving unit for focusing on the subject by including the lens unit therein and moving the barrel to the optical axis.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Example

Figure 3a is a cross-sectional view of the camera module according to the invention, Figure 3b is a top view of the camera module according to the invention.

As shown in FIGS. 3A and 3B, the camera module 300 includes a lens unit 302, a lens driving unit (VCM: Voice Coil Motor) 308, a holder 310, a sensor unit 312, and a housing 322. Include.

First, the lens unit 302 is provided on at least one lens 304, a barrel 306 for embedding the lens 304 in the body interior space, and an outer peripheral surface of the upper end of the barrel 306 and enters the center of the upper surface. Ball (not shown) formed.

Here, the cap is formed with a female threaded portion on the inner surface and screwed with the male threaded portion formed on the outer surface of the barrel 306 to open the barrel 306 so that the lens 304 provided in the barrel 306 does not escape to the outside. Block the top of the).

The lens driver 306 includes the lens part 302 therein and a female screw part 307 is formed on an inner surface thereof so that the male screw part 305 and the screw are formed on the outer surface of the barrel 306 of the lens part 302. In combination, the barrel 306 is moved to the optical axis to focus on the subject.

An internal space is formed in the holder 310, and the sensor unit 312 converts light of a subject incident through the lens 304 into image data, which is an electrical signal, to display a display means such as an LCD (not shown). Send it).

To this end, the sensor unit 312 includes an infrared filter 314, an image sensor 316, a circuit board 318, and the like, and the IR filter 314 includes light of a subject passing through the lens 304. The image sensor 316 detects the light of the subject filtered by the IR filter 314 and converts the light into an image signal which is an electrical signal.

Here, the light of the subject is focused as the barrel 306 is moved in the optical axis direction by the lens driver 308.

In addition, the image sensor 316 is mounted on an upper surface of the circuit board 318 such as a flexible printed circuit board (FPCB), which is a means for transmitting image data.

Accordingly, the image data converted by the image sensor 316 is transmitted to the display means through the circuit board 318.

Here, it is preferable that a connector 320 to which a device such as a display means can be connected is formed at one end of the circuit board 318.

On the other hand, the housing 322 is mounted on the circuit board 318 so that the lens unit 302, the holder 310 and the sensor unit 312 is included in the interior space to determine the light for the subject according to whether the entrance hole is opened or closed. Disperse in the direction.

To this end, the housing 322 extends to the entrance hole (not shown), the filter means 324 for opening and closing the entrance hole, and the filter means 324 to use the filter means 324 according to whether the subject is photographed or not. At least one opening / closing handle 326 for opening and closing the door, at least one guide hole (Hole) 328 for exposing and guiding the opening and closing handle 326 to the outside, and a filter protection part for protecting the filter means 324. 330.

Here, the filter means 324 is a cross filter is formed,

Preferably, the incident hole corresponds to the lens 304 of the lens unit 302 in the optical axis direction.

Accordingly, the lens 304 of the lens unit 302 allows the light of the subject dispersed by the filter means 324 to open and close the entrance hole by the opening / closing handle 326.

The camera module 300 of the present invention moves the opening / closing handle 326 along the guide hole 328 to close the entrance hole of the housing 322 with the filter means 324 to disperse light for the subject. And as shown in Fig. 4B, an image having a clear image quality and various effects can be obtained.

4A and 4B are images captured by using the camera module of the present invention.

That is, the user moves the opening / closing handle 326 along the guide hole 328 of the camera module 300 to move the filter means 324 to the entrance hole of the filter protector 330 to close the entrance hole and photograph the subject. do.

If the user wants to photograph the subject without using the filter means 324, the user moves the filter means 324 to the filter protector 324 using the opening handle 326 along the guide hole 328. The subject may be photographed after the incident hole is opened by moving, or the subject may be photographed after the filter unit 324 is positioned inside the filter protector 330.

The camera module 300 may capture a dynamic image such as light scattering or a product image such as a night view, a pupil, or a jewel by dispersing light in a direction determined by the cross filter 324.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a cross-sectional view showing a camera module of the prior art.

2A and 2B are images taken using a camera module of the prior art.

Figure 3a is a cross-sectional view of the camera module according to the present invention.

3b is a top view of the camera module according to the present invention;

4A and 4B are images taken using the camera module of the present invention.

<Description of Symbols for Main Parts of Drawings>

300: camera module 302: lens unit

304: lens 306: barrel

308: Lens driving unit 310: Holder

312: sensor unit 314: image sensor

316 IR Block Filter 318: Substrate

320: connector 322: housing

324: Filter 326: opening and closing handle

328 Guide

Claims (7)

At least one lens; And a lens unit including a barrel (barrel) for embedding the lens in the inner space, A holder for supporting the lens unit and having an internal space formed therein; An image sensor detecting light passing through the lens and converting the light into an electrical signal; A sensor unit including a circuit board on which the image sensor is seated on an upper surface, electrically connected to the holder, and coupled to the holder to seal the internal space; The camera module is installed on the optical axis of the lens unit, including a filter unit that can open and close and distribute light. The method of claim 1, And a housing mounted on the circuit board such that the lens unit, the holder, and the sensor unit are included in an inner space to disperse light for the subject in a predetermined direction. The method of claim 2, The housing is An entrance hole for receiving light from the subject; At least one open / close handle extending on one side of the filter part to move the filter part between an open position of the incident hole and a closed position of the incident hole; And At least one guide hole for exposing the opening / closing handle and guiding the opening / closing handle; and a filter protection part for protecting the filter part. The filter module is moved to the closed position or the open position of the incident hole by the opening and closing handle. The method of claim 3, The incident hole is a camera module corresponding to the lens in the optical axis direction. The method of claim 1, The sensor unit And an IR filter included in an inner space of the holder and filtering light of the subject passing through the lens. The method of claim 1, And the filter unit is a cross filter. The method of claim 1, And a lens driving unit including the lens unit therein and moving the barrel to an optical axis to focus on a subject.

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