KR102432396B1 - Apparatus for inspecting camera module and chart portion changing method having the same - Google Patents

Abstract

The present invention provides an inspection device for a camera module having a function of changing a chart unit. The purpose of the present invention is to provide the inspection device for a camera module having the function of changing a chart unit and a chart unit changing method for an inspection device for a camera module using the same, capable of changing a chart unit by displaying various images. The inspection device for a camera module having the function of changing a chart unit includes: a housing; a light source unit arranged in the housing; a chart arrangement area arranged in the lower part of the light source unit; a lens unit arranged in the lower part of the chart unit; a moving unit controlling a vertical position of the chart unit to vary an inspection distance formed between the chart unit and the lens unit; a photographing unit photographing the image of the chart unit, and arranged in the lower part of the lens unit; and a chart changing unit arranged in the housing, and including charts having different sizes. The chart changing unit moves and arranges the chart having a predetermined size among the charts to the chart arrangement area.

Description

A camera module inspection device having a chart part replacement function and a chart part replacement method for a camera module inspection device using the same

The present invention relates to a camera module inspection device having a chart part replacement function, and more particularly, to implement the chart part in various images to enable replacement, and if the replacement through the image is not normally performed, a plurality of Among the charts, it relates to a camera module inspection device having a chart part replacement function that can supplement chart replacement so that the chart is positioned at a chart placement position, and a chart part replacement method for a camera module inspection device using the same.

In general, a camera module (CCM: COMPACT CAMERA MODULE) mounted on a portable terminal is miniaturized and manufactured using an image sensor such as a CCD or CMOS as a main component. Here, the camera module collects an image of an object through an image sensor and stores it as data in a memory in the device, and the stored data is displayed as an image through the display unit of the corresponding portable terminal.

The camera module adjusts the distance between the lens and the image sensor and then fixes the focus to adjust the focus. to determine whether it is defective or not.

In general, the diameter of the lenses in the lens barrel provided in the camera module is formed to be slightly larger than the diameter of the inside of the barrel, so that the lenses are tightly fitted in the barrel, so that their positions are fixed at the same time as assembly. If the lenses are not assembled normally due to various causes such as , external impact, inflow of foreign substances, or malfunction of assembly equipment, or if the coupling between the housing in which the lens barrel is inserted and the printed circuit board is misaligned, the resolution in a specific direction may be reduced. degradation may occur.

Since the existing inspection process to check such resolution defects was performed through visual inspection of the inspector's eyes, it is constantly pointed out that it is not objective.

In general, the camera module inspection apparatus is provided with a chart capable of inspecting the resolution. These charts have a certain pattern. In addition, one chart is disposed under the light source in the inspection device.

Accordingly, in the related art, when a chart having various patterns is to be used for resolution inspection, there is a problem in that the chart provided in the device must be directly replaced with another chart or another inspection device must be used.

That is, conventionally, a Modulation Transfer Function (MTF) chart is used to check the resolution of a camera module including a lens and an image sensor.

Such an MTF chart is a chart plate on which a light source and a pattern for resolution inspection are printed.

However, since the conventional chart board cannot change the pattern image once formed, if it is necessary to inspect the changed pattern image for a new camera module, there is a disadvantage that the chart board must be newly printed and created, and there is a problem of follow-up management and storage occurs In addition, a surface light source device is used to provide the brightness that the camera module can photograph the chart plate inside the device, which causes management and periodic replacement costs for lighting brightness.

In the prior literature related to the present invention, there is Republic of Korea Patent Registration No. 10-0807249, which provides a camera test unit for testing the resolution of a camera module using a line pair chart corresponding to an MFT chart.

In order to solve the above-mentioned problems, the present invention implements the chart part in various images to enable replacement, and when replacement through the image is not normally performed, among a plurality of charts installed inside, the chart is located at the chart arrangement position A first object is to provide a camera module inspection device having a chart part replacement function that can supplement the chart replacement so as to be located in a chart, and a chart part replacement method for a camera module inspection device using the same.

In addition, the present invention is a chart that can immediately detect when the chart to be replaced cannot move normally under the light source unit or an abnormality occurs during movement, and display a chart image having the same size as the corresponding chart on the lens unit A second object of the present invention is to provide a camera module inspection device having a sub replacement function and a chart part replacement method for a camera module inspection device using the same.

In order to achieve the above object, the present invention provides a camera module inspection device having a chart part replacement function.

The camera module inspection device having the chart part replacement function includes: a housing; a light source unit disposed inside the housing; a chart arrangement area disposed under the light source unit; a lens unit disposed under the chart unit; a moving unit for adjusting the vertical position of the chart unit to vary the inspection distance formed between the chart unit and the lens unit; an imaging unit disposed under the lens unit and capturing an image of the chart unit; and a chart replacement unit disposed inside the housing, having charts having different sizes, and moving and disposing charts having a size set among the charts to the chart arrangement area.

Here, the chart replacement unit,

a chart housing installed inside the housing so as to be disposed on the side of the chart arrangement area, a slit exposed toward the chart arrangement area is formed, and a bottom opening is formed;

a tray disposed inside the chart housing and having slots for accommodating each of the charts;

Linear motors positioned in each of the slots to move each of the charts back and forth;

an actuator installed on the upper end of the housing and having a shaft connected to the upper end of the tray and elevating;

Comprising a controller for elevating the shaft of the actuator,

The controller is

When any one of the charts is selected, the selected chart is set as the target chart,

Control the driving of the actuator so that the set target chart is located in the slot,

Preferably, the target chart is moved forward to the chart arrangement area by using a linear motor positioned in the slot in which the target chart is arranged.

And the chart arrangement area is,

A rim member fixed to the inner periphery of the housing and having a sliding groove formed therein into which the rim of the target chart is fitted in a sliding manner;

At the top and bottom of the sliding groove,

It is preferable that a plurality of rolling members are formed to guide the edge of the target chart to be moved by the clouds.

In addition, at the lower end of the rim member,

Compensating cylinders having a compensating shaft that is raised and lowered are disposed along the rim member,

In the rim member,

Through-holes through which the compensation shaft of each of the compensation cylinders pass are formed,

The correction axis passing through the through-holes is in contact with the lower end of the rim of the target chart,

The controller is

When the target chart is located on the border member,

Preferably, the target chart is maintained horizontally by controlling the lifting operation of the compensation shaft of each of the compensation cylinders.

In addition, at the upper end of the rim member,

Distance sensors for measuring distance values to the top of the multiple positions of the edges of the target chart are installed,

The controller is

Preferably, the target chart is maintained horizontally by controlling the lifting operation of the compensation shaft of each of the compensation cylinders so that the measured distance values become equal to each other.

Also, the controller

having an error monitor;

The error monitor is

The objective chart is set,

Measuring whether the driving state of the linear motors, the actuators, and the correction cylinders driven to move the target chart is abnormal,

When an abnormality occurs, the size information for the target chart is stored,

It is preferable to control the target chart to be moved to the original position using the linear motors, the actuators, and the compensation cylinders.

In particular, the controller is connected to the image chart unit,

The image chart unit is disposed on the lower edge of the light source unit,

In the image chart unit, chart image information for the charts is set.

Here, the controller is

When an abnormality occurs, the size information for the target chart is stored,

After the target chart is moved to the original position,

Selecting the same chart image information as the target chart from among the chart image information,

Set the selected chart image information as the target chart image information,

The set target chart image information is provided to the lens unit.

According to another embodiment, the present invention provides a housing, a light source unit disposed inside the housing, a chart arrangement area disposed under the light source unit, a lens unit disposed under the chart unit, the chart unit, and the lens In a camera module inspection apparatus comprising: a moving unit for adjusting the upper and lower positions of the chart unit to vary the inspection distance formed between the units;

A chart part replacement method for a camera module inspection device in which charts having different sizes are provided using a chart replacement part disposed inside the housing, and charts having a set size among the charts are moved and placed in the chart arrangement area provides

Here, the chart replacement unit,

a chart housing installed inside the housing so as to be disposed on the side of the chart arrangement area, a slit exposed toward the chart arrangement area is formed, and a bottom opening is formed;

a tray disposed inside the chart housing and having slots for accommodating each of the charts;

Linear motors positioned in each of the slots to move each of the charts back and forth;

an actuator installed on the upper end of the housing and having a shaft connected to the upper end of the tray and elevating;

Comprising a controller for elevating the shaft of the actuator,

The controller is

When any one of the charts is selected, the selected chart is set as the target chart,

Control the driving of the actuator so that the set target chart is located in the slot,

Preferably, the target chart is moved forward to the chart arrangement area by using a linear motor positioned in the slot in which the target chart is arranged.

And the chart arrangement area is,

A rim member fixed to the inner periphery of the housing and having a sliding groove formed therein into which the rim of the target chart is fitted in a sliding manner;

At the top and bottom of the sliding groove,

It is preferable that a plurality of rolling members to guide the edge of the target chart to be moved by rolling are formed.

In addition, at the lower end of the rim member,

Compensating cylinders having a compensating shaft that is raised and lowered are disposed along the rim member,

In the rim member,

Through-holes through which the compensation shaft of each of the compensation cylinders pass are formed,

The correction axis passing through the through-holes is in contact with the lower end of the rim of the target chart,

The controller is

When the target chart is located on the border member,

Preferably, the target chart is maintained horizontally by controlling the lifting operation of the compensation shaft of each of the compensation cylinders.

In addition, at the upper end of the rim member,

Distance sensors for measuring distance values to the top of the multiple positions of the edges of the target chart are installed,

The controller is

Preferably, the target chart is maintained horizontally by controlling the lifting operation of the compensation shaft of each of the compensation cylinders so that the measured distance values become equal to each other.

Also, the controller

having an error monitor;

The error monitor is

The objective chart is set,

Measuring whether the driving state of the linear motors, the actuators, and the correction cylinders driven to move the target chart is abnormal,

When an abnormality occurs, the size information for the target chart is stored,

It is preferable to control the target chart to be moved to the original position using the linear motors, the actuators, and the compensation cylinders.

In particular, the controller is connected to the image chart unit,

The image chart unit is disposed on the lower edge of the light source unit,

In the image chart unit, chart image information for the charts is set.

Here, the controller is

When an abnormality occurs, the size information for the target chart is stored,

After the target chart is moved to the original position,

Selecting the same chart image information as the target chart from among the chart image information,

Set the selected chart image information as the target chart image information,

The set target chart image information is provided to the lens unit.

By means of the above solution, the present invention enables replacement by implementing the chart part in various images, and when replacement through the image is not normally made, among a plurality of charts installed inside, the chart is positioned at the chart arrangement position. It has the effect of supplementing chart replacement.

In addition, the present invention has the effect that, when the chart to be replaced cannot be moved normally in the lower part of the light source unit or an abnormality occurs during movement, it is immediately detected, and a chart image having the same size as the corresponding chart is displayed on the lens unit. has

1 is a perspective view showing the configuration of a camera module inspection device having a chart part replacement function of the present invention.
Figure 2 is a perspective view showing the configuration of the camera module inspection device having a chart part replacement function of the present invention.
3 is a perspective view showing the configuration of a camera module inspection device having a chart part replacement function of the present invention.
4 is a view showing the arrangement relationship of the light source unit, the lens unit, and the chart replacement unit according to the present invention.
5 is a view showing the configuration of a chart replacement unit according to the present invention.
6 is a view showing a process of arranging the target chart through the chart replacement unit according to the present invention.
7 and 8 are diagrams showing the configuration of a chart arrangement area according to the present invention.
9 is a view showing an example in which correction cylinders are further provided on the rim member according to the present invention.
10 is a view showing an example in which the device according to the present invention is connected to an image chart unit.
11 is a block diagram showing a configuration in which a light source unit according to the present invention is novelly connected to the illuminance control module.

Hereinafter, with reference to the drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.

In the following, the provision or arrangement of an arbitrary component on the “upper (or lower)” or “top (or below)” of the substrate means that any component is provided or disposed in contact with the upper surface (or lower surface) of the substrate. means that

Further, it is not intended to limit the inclusion of other components between the substrate and any component provided or disposed on (or under) the substrate.

Hereinafter, with reference to the accompanying drawings, a camera module inspection device having a chart part replacement function of the present invention and a chart part replacement method for a camera module inspection device using the same will be described.

1 is a perspective view showing the configuration of a camera module inspection device having a chart part replacement function of the present invention. Figure 2 is a perspective view showing the configuration of the camera module inspection device having a chart part replacement function of the present invention. 3 is a perspective view showing the configuration of a camera module inspection device having a chart part replacement function of the present invention. 4 is a view showing the arrangement relationship of the light source unit, the lens unit, and the chart replacement unit according to the present invention.

1 to 3, the camera module inspection device having a chart replacement function of the present invention is largely a housing 100, a light source unit 200, a chart unit 300, a lens unit 400, and It includes a printing unit 600 , an imaging unit 700 , a moving unit 800 , and a chart replacement unit 900 .

housing (100)

The housing 100 has a space formed therein.

light source 200

The light source unit 200 is fixed inside the housing 100 . The light source unit 200 emits light having a predetermined wavelength along a set optical axis. The light forms a predetermined light irradiation area.

chart unit (300)

The chart unit 300 according to the present invention is disposed under the light source unit 200 .

A sliding groove is formed in the side of the housing 100 . The chart unit 300 may be introduced through the sliding groove and disposed under the light source unit 200 inside the housing 100 .

A cover may be installed in the sliding groove. The chart unit 300 is used as an inspection chart. The chart unit 300 is formed in a mesh shape.

The chart unit 300 is used for inspection by aligning the optical axis of the light source unit 200 to be positioned at the center of the chart unit 300 .

Accordingly, the light source unit 200 according to the present invention controls the driving of the alignment unit (not shown) in real time so that the optical axis of the light source unit 200 is located at the center of the chart unit 500 according to the control of the controller 950 . do. The alignment unit 600 is a unit capable of 3-axis adjustment or more axis adjustment.

In addition, a chart arrangement area 310 is disposed in the chart unit 300 . The configuration of the chart arrangement area 310 will be described later.

In addition, the alignment part 600 is disposed inside the housing 100 so as to be disposed on the light source part 200 .

The alignment part 600 is disposed in an opening formed at the upper end of the housing 100 and fixed to the upper end of the housing 100 .

The alignment unit 600 fixes the upper end of the light source unit 200 . Preferably, the lower end of the alignment unit 600 and the upper end of the light source unit 200 are coupled through a detachable coupling method. Through this, replacement or maintenance of the light source unit 200 may be easy.

The alignment unit 600 tilts the posture of the light source unit along the X, Y, and Z axes.

The alignment unit 600 includes an XY moving unit for moving the light source unit 200 along the XY direction, and a Z moving unit for lifting and lowering the XY stage along the Z axis. The XY moving part and the Z moving part are controlled by driving of a first motor. The alignment unit 600 may change the posture of the light source unit 200 according to the control of the controller 950 .

lens unit 400

The lens unit 400 according to the present invention is coupled to a coupling hole formed at the lower end of the housing. The lens unit 400 includes a lens frame 410 and a high magnification lens 420 .

The high magnification lens 820 may form an inspection distance with the chart unit 300 .

imaging unit 600

The imaging unit 600 according to the present invention is disposed at the lower end of the housing 100 so as to form a predetermined inspection distance under the lens unit 800 .

moving unit (800)

The moving unit 800 according to the present invention is connected to the alignment unit 600 aligning the light source unit 200 .

A bracket 810 is installed on the upper end of the alignment part 600 .

The moving part 800 is fixed to the inside of the housing 100 and includes a linear motor 820 having an elevating rail.

One end of the bracket 810 is fixed to the rail.

The linear motor 820 is driven under the control of the controller 950 . The linear motor 820 elevates the bracket 810 . The chart unit 300 disposed under the light source unit 200 may be raised and lowered according to the elevation.

Also, by using the alignment unit 600 , the optical axis of the light emitted from the light source unit 200 may be adjusted in real time to coincide with the center of the chart unit 500 . Through this, it is possible to effectively prevent errors in inspection by allowing light to be normally provided to the inspection object in real time.

In addition, in the present invention, when the alignment of the apparatus is set up by installing the chart unit 300 to be replaceable in a sliding manner, the center may be aligned using a separate alignment chart.

In addition, in the present invention, since the light source unit 200, the chart unit 300, and the lens unit 400 are configured as one module and built into the housing 100, the size of the device can be reduced to a certain level or less. can In addition, in the present invention, the chart unit 300 may be disposed to be in close contact with the lower portion of the light source unit 200 , which may use an SFR chart and a Pima chart.

With reference to FIG. 4 , the configuration of the light source unit 200 , the lens unit 400 , the chart unit 300 , and the chart replacement unit 900 according to the present invention will be described.

A chart replacement unit 900 is disposed on the side of the chart unit 300 .

The chart replacement unit 900 is disposed inside the housing 100, includes charts 901 having different sizes, and a chart 901 having a size set among the charts 901. It functions to move and arrange the chart arrangement area 310 .

5 is a view showing the configuration of a chart replacement unit according to the present invention. 6 is a view showing a process of arranging the target chart through the chart replacement unit according to the present invention.

5 and 6, the chart replacement unit 900 according to the present invention is installed inside the housing 100 so as to be disposed on the side of the chart arrangement area 310, and the chart arrangement area 310. A slit 911 exposed toward is formed, a chart housing 910 having a lower opening 912 is formed, and a slot disposed inside the chart housing 910, in which the charts 901 are accommodated, respectively. The tray 920 in which the trays 921 are formed, the linear motors 930 positioned in each of the slots 921 to move each of the charts 901 forward and backward, and the housing 100 at the upper end of the tray 920 . It is installed, and it is connected to the upper end of the tray 920 and is composed of an actuator 940 having a shaft 941 to be lifted, and a controller 950 for raising and lowering the shaft 941 of the actuator 940 .

Here, when any one of the charts 901 is selected, the controller 950 sets the selected chart 901 as a target chart.

Then, the controller 950 controls the driving of the actuator 940 so that the set slot 901 accommodated in the target chart is located on the side of the sliding groove 311a of the chart arrangement area 310 .

The controller 950 advances and moves the target chart to the chart arrangement area 310 using a linear motor 930 positioned in the slot 921 in which the target chart is arranged.

Meanwhile, it is disposed under the light source unit. The chart unit has a chart arrangement area.

7 and 8 are diagrams showing the configuration of a chart arrangement area according to the present invention.

7 and 8, the chart arrangement area 310 according to the present invention is fixed to the inner periphery of the chart unit 300, and the rim of the target chart 901 is fitted to the inner rim in a sliding manner. It may include a rim member 311 in which the groove 311a is formed.

And a plurality of rolling members (B) are formed at the upper end and lower end of the sliding groove (311a) to guide the edge of the target chart 301 to move.

Accordingly, the target chart 901 moving in the tray 920 is inserted into the sliding groove 311a of the rim member 311 while being moved to a set position, the movement may be guided by the clouds of the rolling members (B). .

Here, a pressing cylinder 313 having a pressing shaft 313a that expands and contracts laterally is further provided on the side of the frame member 311 . The pressure cylinder 313 is driven under the control of the controller 950 .

When the pressing shaft 313a of the pressing cylinder 313 protrudes into the sliding groove 311a, the side of the chart 901 positioned in the sliding groove 311a is pushed to be drawn out of the sliding groove 311a. can

9 is a view showing an example in which correction cylinders are further provided on the rim member according to the present invention.

Referring to FIG. 9 , at the lower end of the edge member 311 of the chart arrangement area 310 , compensation cylinders 314 having a compensation shaft 314a that moves up and down are disposed along the edge member 311 .

Through holes 311b through which the correction shaft 314a of each of the correction cylinders 314 pass are formed in the edge member 311 .

The correction shaft 314a passing through the through holes 311b is in contact with the lower edge of the rim of the target chart 901 .

In this state, when the target chart 901 is positioned on the frame member 311 , the controller 950 controls the lifting operation of the compensation shaft 314a of each of the compensation cylinders 314 to control the target chart. (901) is controlled to maintain the horizontal.

For example, distance sensors 315 for measuring distance values to the upper end of the plurality of edges of the target chart 901 may be installed at the upper end of the frame member 311 .

Accordingly, the controller 950 controls the lifting operation of the correction shaft 314a of each of the correction cylinders 314 so that the measured distance values are equal to each other so that the target chart 901 is maintained horizontally. .

Therefore, when the target chart 901 is positioned on the rim member 311, the target chart 901 can be controlled in real time to be horizontal according to the lifting operation of the compensation shaft 314a of the compensation cylinders 314, It may be stably supported by the correction shafts 314a.

10 is a view showing an example in which the device according to the present invention is connected to an image chart unit.

Referring to FIG. 10 , the controller 950 includes an error monitor 960 .

The error monitor 960 includes the linear motors 930 driven to move the target chart 901 after the target chart 901 is set, the actuator 340 and the correction cylinders 314 . Measure whether the driving state is abnormal (refer to FIG. 4).

The controller 950 stores size information for the target chart 901 when an abnormality occurs.

Then, the controller 950 controls the target chart 901 to be moved to the original position using the linear motors 930 , the actuator 940 , and the correction cylinders 314 .

In particular, the controller 950 is connected to the image chart unit 970 .

The image chart unit 970 is disposed on the lower edge of the light source unit 200 .

In the image chart unit 970 , chart image information for the charts 901 is set.

Through this configuration, when an abnormality occurs as described above, the controller 950 stores size information for the target chart 901 .

And after the target chart 901 is moved to the original position, the controller 950 selects the same chart image information as the target chart from among the chart image information.

Then, the controller 950 sets the selected chart image information as the target chart image information, and provides the set target chart image information to the lens unit 400 .

Through this, when an abnormality occurs in the driving of the linear motors 930, the actuator 940, and the correction cylinders 314 driven while the target chart 901 is moved and placed in the chart arrangement area 310, this immediately recognizable.

And when an abnormality occurs as described above, the target chart 901 is immediately returned to the original position, that is, to the slot 921 of the tray 920 in which it was originally accommodated.

Thereafter, chart image information having the same size or pattern as the recovered target chart 901 is selected using the image chart unit 970 .

The chart image information selected here has the same size or pattern as the target chart recovered during actual placement.

Accordingly, the controller 950 sets the selected chart image information as the target chart image information, and then provides it to be displayed as an image on the lens unit 400 .

Therefore, the present invention immediately detects when the chart to be replaced cannot move normally under the light source unit or an abnormality occurs during movement, and displays a chart image having the same size as the corresponding chart on the lens unit, so that it is immediately virtual It can be replaced with a chart of

Through this, in the present invention, inspection errors that occur when the actual chart is abnormally located in the placement area are prevented in advance, and furthermore, a virtual chart that can replace the real chart is immediately provided to the lens unit to follow the inspection error. Inspection time stagnation can be avoided.

According to the above configuration and operation, the present invention implements the chart part in various images to enable replacement, and when replacement through the image is not normally performed, among a plurality of charts installed inside, the chart is located at the chart arrangement position It has the effect of supplementing the chart replacement as much as possible.

In addition, the present invention has the effect that, when the chart to be replaced cannot be moved normally in the lower part of the light source unit or an abnormality occurs during movement, it is immediately detected, and a chart image having the same size as the corresponding chart is displayed on the lens unit. has

11 is a block diagram showing a configuration in which a light source unit according to the present invention is novelly connected to the illuminance control module.

Meanwhile, referring to FIG. 11 , an area matching the lens area of the lens unit 800 in the light source area formed by the light source unit 200 using the controller 950 according to the present invention is set as the central area.

An area other than the central area in the entire area of the light source area is set as an outer area.

Here, the central region and the outer region are regions for controlling illuminance.

In addition, the light source unit 200 according to the present invention has an illuminance control module 210 capable of independently raising and lowering the illuminance of the above-described central region and the outer region. The illuminance control module 210 is driven under the control of the controller 950 .

A first illuminance sensor 710 and a second illuminance sensor 720 are installed in the housing 100 according to the present invention.

The first illuminance sensor 710 measures the first illuminance value in the central area and transmits it to the controller 950 .

At the same time, the second illuminance sensor 720 measures the second illuminance value in the central area and transmits it to the controller 950 .

Then, when the second illuminance value matches the first illuminance value, the controller 950 sets the illuminance value to be maintained.

On the other hand, when the second illuminance value is lower than the first illuminance value, the illuminance control module 210 is used to increase the second illuminance value to be equal to the first illuminance value.

Accordingly, according to the present invention, the region to which the lens unit 400 is adjacent achieves higher illuminance than other regions, thereby preventing an imbalance in illuminance in the entire light source region. That is, in the present invention, the illuminance values in the above-described central region and the outer region are controlled in real time so that the illuminance values are equal to each other, so that the illuminance in the entire light source region is uniform, thereby increasing the significance of the measurement.

As mentioned above, although specific embodiments related to the present invention have been described, it is apparent that various implementation modifications are possible within the limits that do not depart from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, and should be defined by the following claims as well as the claims and equivalents.

That is, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their equivalents All changes or modifications derived from the concept should be construed as being included in the scope of the present invention.

100: housing
200: light source unit
300: chart part
400: lens unit
600: align part
700: imaging unit
800: moving part
900: chart replacement part

Claims (10)

housing;
a light source disposed inside the housing;
a chart unit disposed under the light source unit and having a chart arrangement area;
a lens unit disposed under the chart unit;
a moving unit for adjusting the vertical position of the chart unit to vary the inspection distance formed between the chart unit and the lens unit; and,
an imaging unit disposed under the lens unit and capturing an image of the chart unit;
A chart replacement unit disposed inside the housing, having charts having different sizes, and moving and disposing charts having a size set among the charts to the chart arrangement area;
The chart replacement unit,
a chart housing installed inside the housing so as to be disposed on the side of the chart arrangement area, a slit exposed toward the chart arrangement area is formed, and a bottom opening is formed;
a tray disposed inside the chart housing and having slots for accommodating each of the charts;
Linear motors positioned in each of the slots to move each of the charts back and forth;
an actuator installed on the upper end of the housing and having a shaft connected to the upper end of the tray and elevating;
Comprising a controller for elevating the shaft of the actuator,
The controller is
When any one of the charts is selected, the selected chart is set as the target chart,
Control the driving of the actuator so that the set target chart is located in the slot,
Camera module inspection apparatus having a chart part replacement function, characterized in that by using a linear motor located in the slot in which the target chart is arranged, the target chart is moved forward to the chart arrangement area.
delete The method of claim 1,
The chart arrangement area is
It is fixed to the inner periphery of the housing, comprising a rim member formed with a sliding groove on the inner rim of the target chart is fitted in a sliding manner,
At the top and bottom of the sliding groove,
A camera module inspection device having a chart part replacement function, characterized in that a plurality of rolling members are formed to guide the edge of the target chart to be moved by rolling.
4. The method of claim 3,
At the lower end of the rim member,
Compensating cylinders having a compensating shaft that is raised and lowered are disposed along the rim member,
In the rim member,
Through-holes through which the compensation shaft of each of the compensation cylinders pass are formed,
The correction axis passing through the through-holes is in contact with the lower end of the rim of the target chart,
The controller is
When the target chart is located on the border member,
Camera module inspection apparatus having a chart part replacement function, characterized in that by controlling the lifting operation of the compensation shaft of each of the compensation cylinders to keep the target chart horizontal.
5. The method of claim 4,
At the upper end of the rim member,
Distance sensors for measuring distance values to the top of the multiple positions of the edges of the target chart are installed,
The controller is
Camera module inspection apparatus having a chart part replacement function, characterized in that by controlling the lifting operation of the compensation shaft of each of the compensation cylinders so that the measured distance values are equal to each other so that the target chart is maintained horizontally.
A housing, a light source unit disposed inside the housing, a chart unit disposed under the light source unit and having a chart arrangement area, a lens unit disposed below the chart unit, and a space between the chart unit and the lens unit In a camera module inspection apparatus comprising: a moving part for adjusting the vertical position of the chart part to vary the inspection distance formed in the camera module;
Charts having different sizes are provided using a chart replacement unit disposed inside the housing, and charts having a set size among the charts are moved and disposed in the chart arrangement area,
The chart replacement unit,
a chart housing installed inside the housing so as to be disposed on the side of the chart arrangement area, a slit exposed toward the chart arrangement area is formed, and a bottom opening is formed;
a tray disposed inside the chart housing and having slots for accommodating each of the charts;
Linear motors positioned in each of the slots to move each of the charts back and forth;
an actuator installed on the upper end of the housing and having a shaft connected to the upper end of the tray and elevating;
Comprising a controller for elevating the shaft of the actuator,
The controller is
When any one of the charts is selected, the selected chart is set as the target chart,
Control the driving of the actuator so that the set target chart is located in the slot,
A chart part replacement method for a camera module inspection apparatus, characterized in that the target chart is moved forward to the chart arrangement area by using a linear motor located in the slot where the target chart is arranged.
delete 7. The method of claim 6,
The chart arrangement area is
It is fixed to the inner periphery of the housing, comprising a rim member formed with a sliding groove on the inner rim of the target chart is fitted in a sliding manner,
At the top and bottom of the sliding groove,
A chart part replacement method for a camera module inspection device, characterized in that a plurality of rolling members are formed to guide the edge of the target chart to be moved by rolling.
9. The method of claim 8,
At the lower end of the rim member,
Compensating cylinders having a compensating shaft that is raised and lowered are disposed along the rim member,
In the rim member,
Through-holes through which the compensation shaft of each of the compensation cylinders pass are formed,
The correction axis passing through the through-holes is in contact with the lower end of the rim of the target chart,
The controller is
When the target chart is located on the border member,
A chart part replacement method for a camera module inspection apparatus, characterized in that by controlling the lifting operation of the correction shaft of each of the correction cylinders, the target chart is maintained horizontally.
10. The method of claim 9,
At the upper end of the rim member,
Distance sensors for measuring distance values to the top of the multiple positions of the edges of the target chart are installed,
The controller is
The chart unit replacement method for a camera module inspection apparatus, characterized in that by controlling the lifting operation of the correction shaft of each of the correction cylinders so that the measured distance values are equal to each other so that the target chart is maintained horizontally.

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