KR102045009B1 - Camera module inspection device - Google Patents

Abstract

The present invention relates to a camera module inspection apparatus including a prism portion that refracts the light reflected from the camera module so that one imaging apparatus performs inspection on the operation of a plurality of camera modules at the same time, thereby enabling a faster and more efficient inspection. .
To this end, the present invention provides a camera module inspection device, a camera module seating portion on which at least two or more camera modules are seated, a lighting device unit for shining light on the at least two or more camera modules, and the at least two or more camera modules And a prism unit for refracting the light reflected from the light source, and an image device unit to which the light refracted from the prism unit is input, wherein the prism unit is disposed above the camera module to mount light reflected from the camera module onto the camera module. Inspecting the at least two or more camera modules with one imaging device including a first prism refracting toward the central portion of the part and a second prism refracting light refracted by the first prism toward the imaging device; Providing a camera module inspection device, characterized in that .

Description

Camera module inspection device

The present invention relates to an apparatus for inspecting a camera module, and more particularly, to include a prism unit for refracting light reflected from a camera module, so that one imaging apparatus simultaneously inspects the operation of a plurality of camera modules. It relates to a camera module inspection apparatus for enabling inspection.

As for mobile terminals such as mobile phones and PDAs, the convergence of additional functions such as movie watching and photography are actively progressed as well as camera functions as one of leading the development of multi-convergence. (CAMERA MODULE) is the most representative.

In addition to the higher resolution of the camera module, the camera module has various additional functions such as auto focusing (AF) and optical zoom (OPTICAL ZOOM).

In general, a camera module (CCM: COMPACT CAMERA MOUDULE) mounted on a portable terminal is miniaturized and manufactured using an image sensor such as a CCD or a CMOS as a main component. The camera module collects an image of an object through an image sensor and stores the image of the object as data on a memory in the device, and the stored data is displayed as an image through a 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. After the focusing of the camera module, the inspector places the focused camera module on the inspection device and checks the resolution of the camera module. It is determined whether or not.

In general, the diameter of the lenses in the lens barrel of the camera module is formed to be slightly larger than the diameter in the barrel, so that the lens is tightly fitted in the barrel and the position is fixed at the same time as the assembly, the assembly tolerance that occurs during the assembly process If the lenses cannot be assembled normally due to various factors such as external shock, foreign material inflow, or malfunction of the assembly equipment, or the coupling between the housing into which the lens barrel is inserted and the printed circuit board is incorrect, the resolution in a specific direction may be deteriorated. Symptoms may occur.

In addition, when shooting with a camera is accompanied by unpredictable movement or shaking of the user's body, if the fixing means is not used, distortion of the captured image is generated due to instability of the shooting state.

As a method for compensating for camera shake of the digital camera, optical camera shake correction and non-optical camera shake correction may be classified.

Optical image stabilization is a technique of applying a device to a digital camera that can overcome the shake or shake inherently with respect to the image input through the image sensor module to prevent camera shake. Such optical image stabilization may cause an increase in production cost and unit cost, since a device for a correction function needs to be added to the digital camera.

Non-optical image stabilization is a technique of calculating a motion vector of a photographed image in which a motion is generated using hardware or software in a chip state of a digital camera, and correcting the photographed image by adjusting an offset of the photographed image as much as this.

As described above, the conventional inspection apparatuses for inspecting the camera module individually inspect the camera modules one by one, and this method of inspecting the camera modules individually is inefficient due to excessive inspection time when a large number of camera modules are to be inspected. I have a problem.

Republic of Korea Patent Publication No. 10-2017-0103061 (Invention name: Camera module inspection device, Publication Date: September 13, 2017)

The problem to be solved in the present invention is a camera module including a prism unit for refracting the light reflected from the camera module to enable a faster and more efficient inspection by simultaneously performing the inspection of the operation of the plurality of camera modules in one imaging device It is to provide an inspection apparatus.

In order to solve the above problems, the present invention is a camera module inspection device, the camera module seating portion on which at least two or more camera modules are seated, the lighting device unit for shining light on the at least two or more camera modules, and And a prism unit for refracting light reflected from at least two or more camera modules, and an image device unit to which light refracted from the prism unit is input, wherein the prism unit is disposed above the camera module and reflected from the camera module. The at least two camera modules may include a first prism that refracts light toward a center portion of the camera module seating portion, and a second prism that refracts light refracted by the first prism toward the imaging device. Camera module, characterized in that for testing by the imaging unit Provide an inspection device.

In the camera module inspection apparatus according to the present invention, the lighting device unit, the first illumination unit for irradiating surface light toward the camera module from the bottom of the camera module, and the annular light toward the camera module from the top of the camera module It may include a second lighting unit for irradiation.

In the camera module inspection apparatus according to the present invention, the camera module seating portion may include a control plate for operating the camera module.

In the camera module inspection apparatus according to the present invention, the control unit connected to the camera module seating part to control the operation of the camera module, connected to the imaging device unit to recognize the operation of the camera module to inspect the camera module It may further include.

In the camera module inspection apparatus according to the present invention, the control unit may inspect the area, speed and position of the aperture of the camera module, or inspect the image stabilization characteristics of the camera module.

The camera module inspection apparatus according to the present invention includes a prism portion that refracts the light reflected from the camera module, so that one imaging apparatus performs inspection on a plurality of camera modules at the same time, thereby enabling faster and more efficient inspection. .

1 is a view schematically showing an embodiment of a camera module inspection apparatus according to the present invention.
2 and 3 are views showing in detail the camera module seating portion of the camera module inspection apparatus of FIG.
4 is a view illustrating a first lighting unit of the camera module inspecting apparatus of FIG. 1.
5 is a view illustrating a second lighting unit of the camera module inspecting apparatus of FIG. 1.
6 is a view illustrating a prism unit of the camera module inspecting apparatus of FIG. 1.
FIG. 7 is a view illustrating a path in which light reflected from a camera module moves through the prism unit of FIG. 6.
8 is a diagram illustrating an imaging device of the camera module inspecting apparatus of FIG. 1.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in which the above-described problem to be solved may be specifically realized. In the description of the present embodiments, the same name and the same reference numerals are used for the same configuration, and additional description thereof will be omitted below.

Referring to Figures 1 to 8 describe the camera module inspection apparatus according to the present invention.

1 to 8, the camera inspection module apparatus according to the present invention includes a camera module seating unit 100, a lighting device unit, a prism unit 300, an imaging device unit 400, a controller and a cylinder unit ( 500).

First, the control unit is connected to the camera module seating unit 100 to control the operation of the camera module seated on the camera module seating unit 100.

In addition, the controller is connected to the imaging device 400 to recognize the operation of the camera module to inspect the camera module. That is, the controller inspects an area, a speed, and a position of the aperture of the camera module, or inspects a camera shake correction characteristic of the camera module.

The camera module seating unit 100 will be described with reference to FIGS. 1 to 3 as follows.

At least two camera modules are mounted on the camera module seating part 100, and specifically, the camera module seating part 100 may include a first seating part 110, a second seating part 120, and a seating part. A base 150 and a seat transfer stage 160.

The first seating part 110 is seated on the first camera module, the second seating part 120 is seated on the second camera module.

The first camera module and the second camera module may be mounted on the first seating part 110 and the second seating part 120 by a picker part provided separately.

As shown in FIG. 2, the first seating part 110 and the second seating part 120 are formed in a hollow shape, and the first seating part 110 and the second seating part 120 are formed. In the upper part of the top), stepped portions 111 and 121 are formed so that the first camera module and the second camera module can be stably seated.

A control board for operating the camera module is included on the stepped portions 111 and 121, and the control board and the camera module are electrically connected to each other so that an operation signal sent from the controller to the camera module can be transmitted.

That is, as shown in FIG. 3, the stepped part 111 of the first seating part 110 includes a first control plate 112, and the first camera for inspecting the first camera module by the controller. The operation signal of the module can be transmitted, and the second control plate 122 is included in the stepped portion 121 of the second seating part 120, and the controller is configured to inspect the second camera module. 2 Operation signal of the camera module can be transmitted.

The seating part base 150 is coupled to the lower part of the first seating part 110 and the second seating part 120 to stably hold the first seating part 110 and the second seating part 120. It supports and, the mounting portion transport stage 160 to be described later serves to transport the first seating portion 110 and the second seating portion 120 at the same time.

The seating part transfer stage 160 is coupled to a lower portion of the seating base 150 to transfer the seating base 150, resulting in the first seating part 110 and the second seating part 120. In particular, the seat transfer stage 160 includes a seat transfer base 161 and a seat transfer shaft 162.

The seating part transport base 161 is coupled to the seating part base 150, and the seating part base 150 is moved horizontally around the seating part transport axis 162 by the driving of the cylinder part 500. ) And, as a result, the first seating unit 110 and the second seating unit 120 are transferred.

When the seating base 150 is transferred through the seating part transfer stage 160, and the seating base 150 is positioned below the prism part 300, the first camera module and the second camera are located. Allows you to perform a module check

In addition, when the seating unit 150 is transferred to the seating unit 150 through the seating unit transport stage 160 and is in a position spaced apart from the prism unit 300, the camera module to be inspected through the picker unit may be seated. The parts 110 and the second seating part 120 may be freely seated.

The lighting device unit will be described with reference to FIGS. 3 to 5 as follows.

3 to 5, the lighting device unit irradiates light to the at least two or more camera modules, and specifically, the lighting device unit includes first and second lighting units 211 and 212 and 220. It includes.

As shown in FIG. 4, the first lighting units 211 and 212 irradiate surface light toward the first camera module and the second camera module from under the first camera module and the second camera module.

That is, the first lighting parts 211 and 212 are disposed between the hollow parts formed in the first seating part 110 and the second seating part 120, and the stepped part of the first seating part 110 is provided. Surface light is emitted from a lower portion of the first camera module and the second camera module positioned at the stepped portion 121 of the 111 and the second seating part 120.

In addition, as shown in FIG. 5, the second lighting unit 220 irradiates annular light toward the camera module from above the first camera module and the second camera module.

That is, as shown in FIG. 5, the second lighting unit 220 is coupled to the lower portion of the prism unit 300, and the second lighting unit 220 is positioned with the first camera module and the second camera module. As the hole is formed in an area corresponding to the region to be formed, light reflected from the first camera module and the second camera module passes through the second lighting unit 220 to the prism unit 300. The path of light can be secured to reach it.

The first lighting unit 211 and 212 and the second lighting unit 220 are disposed below and above the first camera module and the second camera module, respectively, to provide sufficient illumination light to the camera module. In the device unit 400, a clear image of the first camera module and the second camera module may be obtained, and thus a more accurate inspection may be performed.

The prism unit 300 will be described with reference to FIG. 6 as follows.

As shown in FIG. 6, the prism unit 300 refracts the light reflected from at least two camera modules and transmits the reflected light to the imaging device unit 400. In detail, the prism unit 300 includes a first prism unit 300. Prisms 321a and 321b, second prisms 322a and 322b, and a prism cover 310.

The first prisms 321a and 321b are disposed on upper portions of the first camera module and the second camera module, respectively, and transmit light transmitted from the first camera module and the second camera module to the camera module seating part. Refract toward the center of 100).

That is, the first prisms 321a and 321b refract light transmitted from the first camera module and the second camera module toward the second prisms 322a and 322b.

The second prisms 322a and 322b refract the light transmitted from the first prisms 321a and 321b toward the imaging device 400 so that the image of the light reaches the imaging device 400. Do it.

The prism cover 310 is disposed on the outer surfaces of the first prisms 321a and 321b and the second prisms 322a and 322b so that the first prisms 321a and 321b and the second prisms 322a and 322b are disposed. ) Can stably refract the light.

Referring to FIG. 7, the movement of light reflected from the camera module will be described based on the first seating unit 110. The light irradiated from the first lighting unit 211 and the second lighting unit 220 will be described. The first camera module reflects light to reach the first prism 321a, and the light reaching the first prism 321a is refracted in the direction of the second prism 322a.

The light refracted by the first prism 321a reaches the second prism 322a and is refracted toward the imaging device 400 to be transmitted to the imaging device 400.

Since the movement path of the light reflected from the second camera module is also the same as the movement path of the light reflected from the first camera module, a description thereof will be omitted.

As described above, the prism portion 300 includes the first prism 321a. 321b portion 300 and the second prism 322a, 322b portion 300 from the first and second camera modules. By refracting the reflected light to the imaging device 400, one imaging device 400 can simultaneously inspect a plurality of camera modules, thereby enabling a faster and more efficient inspection. .

Referring to FIG. 8, the imaging apparatus 400 will be described below.

As shown in FIG. 8, the light refracted by the prism unit 300 is input to the imaging apparatus 400, and specifically, the imaging apparatus 400 includes the lens unit 410 and the imaging unit 420. ) And the photographing part transfer stage 430.

The lens unit 410 is connected to the photographing unit 420 so that light transmitted from the second prisms 322a and 322b can be photographed by the photographing unit 420 without perspective. 410 is composed of a telecentric lens.

As the lens unit 410 is configured as a telecentric lens, distortion due to perspective caused by steps and tilts of the first camera module and the second camera module transmitted from the second prisms 322a and 322b. Can be prevented.

That is, since the lens unit 410, which is composed of a telecentric lens, is configured to be parallel to the optical axis of the lens, the photographing unit may not be distorted due to perspective when photographing an object having a step or an inclination. When the 420 captures the first camera module and the second camera module, the step and the inclination according to the structures of the first camera module and the second camera module are not reflected. Inspection of the second camera module can be performed.

The photographing unit 420 photographs the information of the light transmitted from the lens unit 410 so that the inspection of the first camera module can be performed.

The photographing part transfer stage 430 enables focusing and zeroing by allowing the photographing part 420 and the lens part 410 to move horizontally.

As described above, the lighting unit 211, 212, 220 irradiates light to at least two or more camera modules seated on the camera module seating unit 100, and the light reflected from the plurality of camera modules By being refracted by the prism unit 300 and input to the single imaging device unit 400, a plurality of camera modules can be simultaneously inspected using one imaging device 400, thereby allowing the camera module to be inspected. This allows for faster and more efficient inspection.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various modifications may be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. It is possible and such variations are within the scope of the present invention.

100: camera module seat
110: first seating part
111, 121: stepped portion
112: first control panel
120: second seating part
122: second control board
150: seating base
160: seating unit transfer stage
161: seat transfer base
162: feed axis of the seat
211 and 212: first lighting unit
220: second lighting unit
300: prism section
310: prism cover
321a. 321b: first prism
322a, 322b: second prism
400: imaging device
410: lens unit
420: the photographing unit
430: shooting unit transfer stage
500: cylinder part

Claims (5)

In the camera module inspection device,
A camera module seating unit on which at least two camera modules are seated;
A lighting device unit for shining light on the at least two camera modules;
A prism unit that refracts light reflected from the at least two camera modules; And
And an imaging device to receive light refracted from the prism unit.
At least two first prisms arranged on an upper portion of each camera module to refract light reflected from each camera module toward a center portion of the camera module seating portion; And
Inspecting the at least two or more camera modules with one of the imaging devices, including at least two or more second prisms that refract the light refracted by each of the first prisms toward the imaging device,
The camera module seating unit,
A first seating part and a second seating part on which the camera module is mounted;
A seating base coupled to a lower portion of the first seating portion and the second seating portion to support the first seating portion and the second seating portion; And
And a seating part transfer stage coupled to the seating base to transport the first seating part and the second seating part by conveying the seating part base.
The lighting device unit,
A first lighting unit configured to be disposed in a plurality of hollow portions formed in the first seating unit and the second seating unit, and irradiating surface light toward each of the camera modules from a lower portion of the camera module; And
The second lighting unit is composed of a single unit coupled to the lower portion of the prism portion, the annular hole is formed in an area corresponding to the area where the camera module is located, and irradiates the annular light toward the camera module from the top of the camera module Camera module inspection apparatus comprising a. delete The method of claim 1,
The camera module seating unit comprises a control panel for operating the camera module camera module inspection apparatus. The method of claim 1,
And a control unit connected to the camera module seating unit to control the operation of the camera module, and connected to the imaging unit to recognize the operation of the camera module to inspect the camera module. Device. The method of claim 4, wherein
The control unit,
And inspecting an area, a speed, and a position of an aperture of the camera module or inspecting a camera shake correction characteristic of the camera module.

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