KR20060022197A - Image test apparatus for camera module comprising focusing dial - Google Patents

Abstract

The present invention includes a housing including an MTF chart and a light source therein; A PC connected to one side of the housing and having a monitor, a keyboard and a body; A pocket coupled to an upper surface of the housing and in which a module component is mounted; A socket located at the top of the pocket and having a probe pin selectively connected to the module component inserted into the pocket; A socket board to which the socket is coupled; A focusing dial for focusing by rotating a lens barrel of a module component inserted into the pocket; It provides an image test equipment including a cable connecting the socket board and the PC.

According to the present invention, in the image test equipment, it is possible to perform the focusing operation within a short time to enable mass production.

Camera Module, Focusing, Socket, Probe, Pogo Pin, Focusing

Description

Image test apparatus for camera module comprising focusing dial}             

1 is a cross-sectional view showing a completion state of a general camera module

2 is a configuration of the image test equipment of the conventional camera module

3 is a configuration diagram of the image test equipment according to an embodiment of the present invention

* Description of the symbols for the main parts of the drawings *

7: PCB board 11, 31: MTF chart

12, 32: light source (5100 ㅀ K) 13: connector

14: FPCB 15: Camera Module Component

16, 35: socket board 17: USB port

18, 38: USB cable 19, 34: PC monitor

20, 41: PC body 21, 40: keyboard

33: camera module head 36: probe pin (pogo pin)

37: socket 39: equipment housing

42: focusing dial 43: belt

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image test apparatus capable of automatically or automatically focusing a camera module applied to a mobile phone, a PDA, a digital still camera (DSC), various game devices, and the like.

1 illustrates a configuration of a conventional camera module. Referring to this, a passive element and an image sensor 4 for power stabilization are mounted on a PCB 7, a lens 1, a lens cap 2, and an infrared ray. After assembling the lens unit consisting of the filter glass (3) to produce a module component, it is bonded to the FPCB (5), one end of the FPCB (5) is provided with a connector (6) for connection with an external circuit.

Conventionally, in order to focus the camera module, most companies have focused on the optimal focus through the MTF value implemented through the MTF chart shown at the Manual Demo Board Level.

That is, as shown in FIG. 2, the focusing method of the conventional camera module displays an image of the assembled module 15 on the socket board or the demo board 16 to match the chart with the MTF chart 11. The image is received by the light source 12 and the image is floated and evaluated to be based on the prescribed MTF value.

However, since this type of test has to be carried out in individual units, it is not only a long time for focusing, but also a lot of time, effort and manpower to perform a full inspection in mass production. there was.

The present invention is to solve this problem, and to provide a device capable of focusing the mass production concept using the focusing software.

The present invention includes a housing including an MTF chart and a light source therein; A PC connected to one side of the housing and having a monitor, a keyboard and a body; A pocket coupled to an upper surface of the housing and in which a module component is mounted; A socket located at the top of the pocket and having a probe pin selectively connected to the module component inserted into the pocket; A socket board to which the socket is coupled; A focusing dial for focusing by rotating a lens barrel of a module component inserted into the pocket; It provides an image test equipment including a cable connecting the socket board and the PC.

At this time, the test pattern is preferably formed on the surface of the module component inserted into the pocket.

As shown in FIG. 3, after the camera module is assembled to the component 33 base and placed in a pocket of a focusing device, the test module 37 is assembled with a probe pin 36. The socket board 35 is lowered to implement a device electrically connected to the camera module 336.

When electrically connected in this way, an image of the module appears on the monitor 34 of the PC. At this time, the operator rotates the focusing dial 38 configured to rotate the lens barrel until the specified MTF value is completed and the focusing is completed. .

When the focusing operation is completed, the operation is completed by unloading the module component by cutting off the electrical signal by pressing the stop button. The operator focuses with the naked eye and sorts pass / fail to sort, so that the deviation of the operator is reduced and stable image evaluation is possible.

This enables the focusing operation within a short time, it is possible to implement the manufacturing apparatus and mass production.

In order to embody the present invention, the FPCB and the connector are removed from the connection structure of the FPCB and the BtoB connector of the conventional camera module, thereby making the module component 33 structure specialized, and forming a predetermined pattern on the bottom surface of the PCB substrate for the probe (pogo). It is configured to view the image image by the electrical connection using pin, 36).

In addition, the face down structure is adopted to view the MTF chart downward from the conventional horizontal structure or the upward structure. Through the focusing method of this structure, a mass-produced device was invented, and the focusing operation can be performed in a short time.

In conclusion, the focusing of the conventional camera module has been performed by rotating the barrel of the lens to match the MTF value implemented through the MTF chart by displaying the image at the demo board level, but in the present invention, the module is treated as a component base. The electrical connection was attempted, and the lens barrel and the focusing dial were connected with a time belt for focusing, so that the operator could conveniently focus and mass-produce.

According to the present invention, in the image test equipment, it is possible to perform the focusing operation within a short time to enable mass production.

Claims (2)

A housing including an MTF chart and a light source therein; A PC connected to one side of the housing and having a monitor, a keyboard and a body; A pocket coupled to an upper surface of the housing and in which a module component is mounted; A socket located at the top of the pocket and having a probe pin selectively connected to the module component inserted into the pocket; A socket board to which the socket is coupled; A focusing dial for focusing by rotating a lens barrel of a module component inserted into the pocket; Cable connecting the socket board and the PC Image test equipment including The method of claim 1, Image test equipment in which the module component is inserted into the pocket in the form of face down, and a test pattern is formed on the surface of the module component.

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