KR101625491B1 - Apparatus for Generating Stimulated Vibration for Test of Optical Image Stabilizer with Multiport Equipped Coaxially and a Test Apparatus Having the Same - Google Patents

Abstract

The present invention relates to a coaxial multiport exciter for a hand shake correction test and a test apparatus having the same, and more particularly, to an image capturing device such as a camera installed in a plurality of ports oscillating along one axis, Optical image stabilizer) test, and a test apparatus having the same. The hand shake correction test apparatus 100 includes a control unit; A socket for tilting the test object with the camera module having the plurality of ports 121 being simultaneously oscillated by one rotation axis and disposed at least one of the plurality of ports 121 to be inclined with respect to the rotation axis, A vibrator (120) having a drive for driving; And a chart module 130 having a piched shape corresponding to the plurality of ports 121.

Description

Technical Field [0001] The present invention relates to a coaxial multi-port exciter for a hand shake correction test, and a test apparatus having the coaxial multi-

The present invention relates to a coaxial multiport exciter for a hand shake correction test and a test apparatus having the same, and more particularly, to an image capturing device such as a camera installed in a plurality of ports oscillating along one axis, Optical image stabilizer) test, and a test apparatus having the same.

Optical Image Stabilizer or Image Stabilizer means a technique for preventing or correcting shaking or vibration transmitted from the body to the camera, such as from a holding device or a hand holding the camera. A camera mounted on a portable device such as a smart device may cause image blurring mainly due to vibration transmitted from a hand. A method for correcting hand tremors can be divided into an optical method in which a lens is used and a method in which an image sensor is used. The optical image stabilization technique applies the principle of correcting the motion by changing the light path. On the other hand, a method using an image sensor can be divided into an electronic method of receiving an electronic signal by light incident on the image sensor and correcting the image, and a mechanical method using an image sensor such as a CMOS image sensor . Various methods or apparatus for calibrating or testing hand anti-shake are known in the art.

Patent No. 1013364, 'Shake Correction Performance Tester System' is an integrated booth that forms a dark room inside; An object mounting unit installed on an inner surface of the accumulation booth and provided with a subject; And a back-and-forth moving rail installed in a longitudinal direction between an inner front surface and an inner rear surface of the accumulation booth; And a camera mount on which a test camera for picking up the object is set. In the prior art, the shaking is caused by the front and rear moving rails or the device diaphragm and the swing mechanism.

Another prior art related to hand shake correction is Patent Publication No. 2013-0065223, 'Resolution Evaluation Method of Camera Module for Hand Shake Correction'. The prior art includes the steps of preparing a camera module having a lens module, an image sensor, and a driver for correcting camera shake; Disposing a sample pattern capable of measuring resolution; Applying vibration having a predetermined frequency to the camera module; Obtaining an image of a sample pattern with the camera module; A step of measuring a resolution of an image while varying a hand shake correction value by a driving unit in increments of a unit step, and a step of changing a measurement speed of resolution according to a tilt.

In the prior art, vibration is applied in a direction having an inclination of 45 degrees with respect to the axis.

Hand tremors or vibrations can be generated in a variety of shapes and devices for hand tremor correction or testing need to be tested by an excitation generator with at least two free levels. At the same time, it is advantageous to simultaneously test a plurality of camera modules. It is advantageous that the hand shake correction test is performed simultaneously on a plurality of objects and under the same condition.

The prior art does not disclose such a generator.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Korean Patent Registration No. 1013364 (published on February 14, 2011) Prior Art 2: Korean Patent Publication No. 2013-0065223 (published on June 19, 2013)

It is an object of the present invention to provide a camera module capable of performing vibration correction test on at least two camera modules by vibrating along one axis of rotation that oscillates along one axis, And a test apparatus having the coaxial multi-port vibrator.

According to a preferred embodiment of the present invention, the coaxial multiport exciter comprises: a rotary vibration unit in which a plurality of ports capable of fixing a test object having a camera module are arranged, respectively; A first fixing frame and a second fixing frame coupled to one and other portions of the rotary vibration unit; And a driving device for rotationally vibrating the rotary vibrating unit with the one portion and the other portion of the rotary vibrating unit, wherein the plurality of ports vibrates at the same time by the driving device, Direction.

According to another preferred embodiment of the present invention, the predetermined direction is inclined at an angle between 0 and 90 degrees with respect to the rotation axis.

According to another preferred embodiment of the present invention, an encoder or gyro sensor is further provided for measuring vibration torsion on the rotation axis.

According to another preferred embodiment of the present invention, the hand shake correction test apparatus includes a control unit; A socket for tilting the test object having the camera module, which is mounted on at least one of the plurality of ports, at an angle to the rotation axis, and a driving device for driving the rotation axis, An exciter; And a chart module having a piched shape corresponding to the plurality of ports.

According to another preferred embodiment of the present invention, the socket further comprises a handler for supplying and discharging the test object.

According to another preferred embodiment of the present invention, the control unit generates a position and velocity profile for controlling the vibration of the drive unit, and the vibration axis is oscillated in accordance with the position and velocity profile.

The exciter according to the present invention has an advantage that the inspection efficiency is improved by simultaneously performing the hand shake correction test on each of the cameras fixed to the plurality of ports rotating along one axis. In addition, the vibrator according to the present invention generates vibrations with respect to two directions by generating vibration based on one direction, thereby reducing the time required for the vibration test and simplifying the vibration generating structure .

FIG. 1A shows an embodiment of a test apparatus equipped with a vibrator according to the present invention.
1B shows another embodiment of a test apparatus equipped with a vibrator according to the present invention.
1C shows an embodiment of a handler that can be applied to a test apparatus according to the present invention.
Figure 1d shows an embodiment of a socket being installed in a port of a vibrator
Figs. 2A and 2B respectively show the exploded structure and the assembled structure for the embodiment of the exciter according to the present invention.
FIG. 3A illustrates an embodiment of a hand shake correction test by a vibrator according to the present invention, FIG. 3B illustrates an embodiment of a vibrator in the process of FIG. 3A, and FIG. 3C illustrates an embodiment of a camera module disposed in a socket Respectively.
Fig. 4 shows an embodiment of the excitation control structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1A shows an embodiment of a test apparatus 100 equipped with a vibrator according to the present invention.

Referring to FIG. 1A, an apparatus for testing hand shake correction according to the present invention includes a control unit; A socket for obliquely securing a test object having a camera module with a plurality of ports 121 being simultaneously oscillated by one oscillation axis and being disposed on at least one of the plurality of ports 121, A vibrator (120) having a drive for driving; And a chart module 130 having a piched shape corresponding to the plurality of ports 121.

The test apparatus 100 according to the present invention corresponds to an apparatus for testing hand shake correction by simulating vibrations that may be generated in the image capturing process of a camera. Vibration may include various types of motions, such as shaking, movement, tremor, or rotation, and may be caused by exciter 120. Basically vibration includes periodic motion in at least one direction and periodic motion can occur regularly or irregularly in a constant or non-constant form. The test apparatus 100 according to the present invention can basically generate repetitive periodic motion in at least one direction and generate various types of deformed vibrations by adding various additional apparatuses. In addition, the test apparatus 100 according to the present invention can generate repetitive periodic motion in one direction, thereby generating the same or similar effect as generating periodic motion in different directions.

In the embodiment of the present invention, the test apparatus 100 or the exciter 120 is described as generating a periodic motion with respect to one vibration axis. However, as the need arises, Other types of periodic motion can be generated and the present invention is not limited by the number of oscillation directions or oscillation axes.

The overall operation of the test apparatus 100 according to the present invention can be controlled by a control unit. The control unit may control the drive unit 125, such as a direct drive motor, for example, to generate vibration in the exciter 120. [ The control unit can also process commands inputted through the input unit 12 and display the image obtained on the camera module on the display device D. [ The control unit may include a central processing unit, such as any microprocessor known in the art, and may include a suitable program for controlling each of the devices installed in the test apparatus 100. For example, a program for controlling the operation of the driving device 125 and generating a certain type of vibration may be installed in the control unit.

The vibrator 120 includes at least one port 121 to which a test object having a camera module is fixed and a drive device 125 such as a DD motor for vibrating a camera module fixed to each port 121 . A socket capable of opening and closing a cover can be installed in each port 121 and the test object can be fixed to the socket so as to be inclined with respect to the vibration axis. Each port 121 can be vibrated in the same direction around the oscillation axis by the driving device 125 and can be oscillated in the pie shape 131a arranged in the chart module 130 by the camera module fixed to each socket An image can be obtained. And the obtained image can be displayed on the display device D. [

The test object having the camera module can be supplied from the trays 11, 11a and 11b or can be discharged to the trays 11, 11a and 11b. The supply of the test object to the socket installed in the port 121 from the trays 11, 11a, 11b may be done manually, as in the embodiment shown in FIG. 1A, or alternatively, as in the embodiment shown in FIG. And a conveying guide 150b. The trays 11, 11a, 11b may be disposed at appropriate locations and may be disposed, for example, at the front of the frame F or at the side of the exciter 120. The structure of the trays 11, 11a, and 11b is not particularly limited and may be appropriately selected depending on the number of the suction nozzles disposed in the handler 150. [

The operation unit 13 or the operation panel C composed of a plurality of operation buttons can be disposed at a proper position of the frame F. [ And the operation indicator L may be disposed as necessary but is not necessarily required.

The trays 11a and 11b and the input unit 12 or the operation unit 13 can be mounted on the retractable base B while the trays 11a and 11b and the input unit 12 can be disposed on the retractable base B, Can be installed in various positions in the position.

1B, the chart module 130 may have a movable structure and a chart module 130 of the same or similar structure, not shown in FIG. 1A, but in the embodiment of FIG. 1A may be installed within the frame F have.

The chart module 130 may be disposed at a position distant from the vibrator 120 by a distance corresponding to the focal distance of the camera module. The chart module 130 includes a chart unit 131 having a shape 131a corresponding to each port 121, a fixed frame 132 for fixing the chart unit 131, A vertical guide 134 for moving the vertical guide 133 in the vertical direction. Fixing units 133a and 133b for fixing the chart unit 131 to the predetermined positions of the horizontal guide 133 and the vertical guide 133 may be installed in the horizontal guide 133 and the vertical guide 133, respectively .

The chart module 130 can be manufactured independently of the vibrator 120 and installed inside the frame F and can be automatically or manually performed by the control unit in the movement of the chart unit 131. [ A chart module 130 having various structures can be applied to the test apparatus 100 according to the present invention and the present invention is not limited to the embodiments shown.

1B, a handler 150 including a conveying guide 150a and a head 150a is installed inside the frame F to convey the test object from the tray 11 to the port 121, 121 to the tray. The tray 11 may consist of a supply tray and a discharge tray as necessary but is not necessarily required.

The operation of the handler 150 can be done by the control unit or independently.

1C illustrates an embodiment of a handler 150 that may be applied to a testing apparatus according to the present invention.

Referring to FIG. 1C, the handler 150 may include a head 150a for conveying a test object including a camera module, and a conveying guide 150b for conveying the head 150a to a predetermined position. Specifically, the head 150a includes at least one adsorption nozzle 151 having a vacuum adsorption structure for fixing a test object, a fixing block 152 to which each adsorption nozzle 151 is fixed, and a plurality of adsorption nozzles 151 And a cylinder block 153 for controlling up-and-down movement. The head 150a is fixed to the conveying guide 150b by the fixing bracket 154 and can be moved.

 The conveyance guide 150b for moving the head 150a to a predetermined position includes a fixed frame 155, a slide member 155a disposed below the conveyance frame 155, a bracket 155b disposed below the slide member 155a, And a first guide unit 155c for guiding the movement of the unit 155b and the slide member 155a. The head 150a can be fixed to the engaging bracket 154 and the engaging bracket 154 is fixed to the bracket unit 155b so that the head 150a can be engaged with the conveying guide 150b.

A pair of second guide units 156a and 156b may be disposed for movement in the second direction of the head 150a and the transfer frame 155 may be a transfer member 157a operated by a transfer device 157a such as a motor 157 in the second direction along the second guide units 156a, 156b.

According to the present invention, the number of adsorption nozzles 151 may be larger than the number of ports included in the exciter, and preferably one. For example, if the number of ports arranged in the vibrating unit is M (M is a natural number), the number of the suction nozzles 151 can be M + 1. This structure has the advantage that the test object can be supplied to each port at the same time as the test object sequentially discharges the port from each port. However, the number of the suction nozzles 151 is not limited, and the supply or discharge of the test object to or from the port by the suction nozzle 151 can be performed in various ways, and the present invention is not limited to the illustrated embodiments. If necessary, a detection unit S such as a camera unit is installed in the head 150a so that the fixed state of the test object can be detected at each port, but it is not necessarily installed.

Sockets for fixing the test object, such as, for example, a smart phone, may be installed in each port.

1D shows an embodiment of a socket 160 installed in a port of a vibrator.

Referring to FIG. 1D, the socket 160 to which the test object is fixed may have an automatic opening and closing structure. For example, the socket 160 includes a base plate 161, a placement unit 161a provided on the base plate 161, a fixing groove 165 formed in the placement unit 161a to which the test object is fixed, Closing cover 162 for opening and closing the opening / closing cover 162, and an opening / closing operation unit 163 for operating the opening / closing cover 162. The operation of the opening / closing operation unit 163 allows the fixing groove 165 to be opened / closed by the opening / closing cover 162. An image window 162a may be formed on the opening / closing cover 162 at a position corresponding to the position of the camera module to be tested, which is fixed to the fixing groove 165.

Fig. 1 (a) shows an embodiment in which the fixing groove 165 is closed, and Fig. 1 (b) shows an embodiment in which the fixing groove 165 is opened. Closing control unit of the opening / closing operation unit 163 connected to the opening / closing cover 162. And the operation of the opening and closing operation unit 163 can be associated with the operation of the handler described above.

Sockets 160 having various structures can be applied to the test apparatus according to the present invention, and the present invention is not limited to the embodiments shown.

Each of the units installed in the test apparatus will be described below.

Figs. 2A and 2B show the exploded structure and the assembled structure for the embodiment of the exciter 20 according to the present invention, respectively.

Referring to FIG. 2A, a vibrator 20 according to the present invention includes a rotary vibration unit 22 having a plurality of ports 21 to which a test object having a camera module can be fixed, respectively; A first fixing frame 27 and a second fixing frame 28 coupled to one portion and another portion of the rotary vibration unit 22; And a driving device (25) for rotationally vibrating the rotary vibration unit (22) with the one side and the other side of the rotary shaft as a rotation axis, wherein the plurality of the ports (21) are simultaneously vibrated by the driving device The test object 261 is fixed in a predetermined direction in the plurality of ports 21.

The plurality of ports 21 can be disposed in the rotary oscillating unit 22, and the rotary oscillating unit 22 can have a plate-like structure, but is not limited thereto. The rotary vibration unit 22 may have a symmetrical structure with respect to one straight line and one straight line may be an oscillation axis for generating vibration. For example, as shown in Figs. 2A and 2B, the rotary vibration unit 22 may be a rectangular plate-like shape, and a straight line connecting the centers of the short sides facing each other may be an oscillation axis. The symmetric structure is intended to facilitate the occurrence of periodic vibration. Since various types of hand tremble may occur during photographing by the actual camera module, an auxiliary device may be added to generate various deformation vibrations. The present invention is not limited by the addition of such an auxiliary device.

The plurality of ports 21 may be arranged along the one straight line or may be arranged so as to form a symmetry with respect to one straight line, The test object 261 may be fixed. For example, a socket capable of being fixed to the test object can be disposed in the plurality of ports 21, and a test object 261 fixed to each socket can be fixed to face in a predetermined direction. The predetermined crystal orientation may be a direction inclined with respect to the oscillation axis, as described below. Specifically, in the embodiment shown in FIG. 2A, the rotary vibration unit 22 may be a rectangular plate-like shape, and the vibration axis may be a straight line parallel to the long side. And the test object 261 may be arranged to be inclined at an angle of 0 to 90 with respect to the vibration axis, for example, 45 degrees. The inclination of the test object 261 can be determined by the structure of the test object. In general, the object to be tested 261 may have a symmetrical structure with respect to at least one straight line, and the inclination means that at least one straight line and the oscillation axis of the rotational oscillating unit 22 are inclined to each other. For example, a cell phone can be a thin rectangular plate, and a camera module can be placed near one short side. In such a case, the mobile phone may have a symmetrical structure with respect to a straight line connecting the centers of the short sides facing each other. And the inclination means the inclination of the symmetry reference line of the cellular phone and the oscillation axis of the rotary vibration unit 22. [ Or inclination means a symmetry reference line connecting the center of the long side facing each other and a tilt of the rotational vibration unit 22. [

The rotary vibration unit 22 is fixed to the first fixed frame 27 and the second fixed frame 28 so that the rotary vibration unit 22 can be rotated. The first fixed frame 27 or the second fixed frame 28 may have any structure known in the art capable of supporting the rotary vibration unit 22 so as to be capable of rotating vibration. The first fixing frame 27 and the second fixing frame 28 can be detachably fixed to the base substrate 29 by a predetermined distance. The base substrate 29 may have a suitable structure that can be coupled to other modules associated with the test and may include a vibration-absorbing structure or an anti-vibration structure that is delivered from the stationary frame 27, 28, or other device as needed .

One end of the rotary vibration unit 22 may be coupled to a driving shaft of the driving device 25 capable of generating a rotational motion coupled to the first fixed frame 27. [ And the other end of the rotary oscillating unit 22 may be coupled to the second stationary frame 28 by a rotary support unit 24 such as a bearing. The drive device 25 may be, for example, a DD motor (Direct Drive Motor), but may be any drive device capable of generating rotational vibration, and the present invention is not limited to the embodiments shown. The rotary oscillating unit 22 may have an axis of rotation coupled to the drive shaft or the rotary support unit 24, respectively. And the sensor module 23 for detecting the rotational vibration may be disposed at the end of the shaft of the rotational vibration unit 22, for example, or other appropriate position. The sensor module 23 can be, for example, an encoder or a gyro sensor, and can detect the rotational or torsional state of each port 21. For example, an encoder may be mounted on an oscillation axis coupled to the rotation support unit 24, such that a warping of the rotation axis or an error in rotation of the drive unit 25 and rotation of the oscillation axis may be detected. In addition, a gyro sensor may be installed at each port 21 or at least two ports 21 to measure the acceleration so that a vibration error can be detected at each port 21. The detected vibration error can be transmitted to the control unit. In this specification, a vibration error, a rotation state, or a twist state means that vibration states are different from each other at different positions. The torsional state may arise from various causes such as warping of the vibration axis, unstable fixed state of the object to be tested, or generation of vibration in the fixed frames 27 and 28. The sensor module 23 may be installed at various positions of the vibrator 20 to detect a vibration error according to time or position and to transmit it to the control unit.

The vibrator 20 according to the present invention allows a plurality of test objects to be tested at the same time and under the same or similar conditions. In addition, the generation of the rotational vibration along one vibration axis causes a vibration similar to that occurring in the same or similar test to generate vibration in two different directions.

FIG. 3A shows an embodiment of a hand shake correction test by a vibrator according to the present invention, FIG. 3B shows an embodiment of a vibrator in the process of FIG. 3A, and FIG. 3B shows an embodiment of a camera module .

Referring to FIG. 3A, a vibrator 20 having a plurality of ports 21 can be fixed to the test frame F. FIG. And the chart unit 31 in which the piched shapes 311 located at the same distance from the plurality of ports 21 are disposed can be fixed to the test frame F. [

Referring to FIG. 3A, the shape 311 disposed in the chart unit 31 means an object to be imaged by the camera module to be tested. The pic- ture shape 311 may have a directionality and the directionality of each of the pic- ture shapes 311 may be the same or similar. On the other hand, the directionality of the pic- ture shape may be the same as or similar to the direction of inclination of the test object described above. Thus, each of the pie shapes 311 has the same or similar directionality and has the same or similar direction as the inclination of the test object, which has the advantage of being tested under the same or similar conditions. And also makes it easy to search for the distortion direction or the distortion cause of the image due to the vibration. The pic- ture shape 311 can be formed in the chart unit 31 in various ways and the brightness of the chart unit 31 can be adjusted as needed. Also, the shape, directionality, or brightness of the shape 311 formed on the chart unit 31 can be adjusted. Various controllable pitch shapes 311 can be placed in the chart unit 31. [ And the chart unit 31 may have a movable structure as described above.

The exciter 20 can be placed in a position that allows the camera module under test disposed at each port 21 to acquire an image of the shape 311. [ As described above, the inclination of the test object and the directionality of the slanted shape 311 may be the same or similar. Specifically, the focal point of the pic- ture 311 is displayed on the chart unit 31 so as to be located at the origin of two inclined vertical axes. However, since the two inclined shafts of the display device are arranged in an inclined form of the test object, As the XY axis. In the X-Y plane, whether or not the screen is shaken by the vibration is measured, and when the shake correction function is turned on in the test object, the shake can be measured.

In the embodiment shown in FIG. 3A, the rotation axis for rotational vibration in the rectangular-plate-shaped rotary vibration unit 22 is a straight line connecting each port 21 indicated by the arrow A in the figure. The rotational vibration direction is a direction indicated by an arrow V which is perpendicular to the axis, and can be periodically performed at an angle of, for example, 10 to 60 degrees around the rotational axis. Specifically, the rotary vibration unit 22 is subjected to rotational vibration at a cycle of, for example, 1 to 20 Hz by a drive unit 15 such as a DD motor. In the course of the rotational vibration, each camera module photographs each of the pic- ture shapes 311 and transmits them to the display device. A control unit may be provided to control the operation of the rotational vibration, the acquisition of the image, or the processing associated with the analysis of the image.

As shown in Fig. 3B, the photographing direction or image acquiring direction S may be perpendicular to the direction A of the rotation axis. And the direction of the test object disposed in each port 21 can be inclined with respect to the direction of the direction A of the vibration axis.

Referring to FIG. 3C, a test object 261 having a camera module 261a may be placed in each port 21. The direction A of the rotational axis of each port 21 is determined and the direction R of the rotational oscillation is perpendicular to the direction of the rotational axis A. [ The inclination direction CA of the test object 261 is inclined in the direction A of the rotation axis, for example, in a range between 0 and 90 degrees, and is inclined substantially in the direction of the vibration R. [ The rotational vibration of the test object 261 along the direction A of the rotation axis brings about the same or similar effect as applying the rotational vibration to the test object 261 in the two directions A and IA. Thus, the vibrator 20 according to the present invention generates the same or similar effect as the vibration test for two different rotation axes due to the vibration of one rotation axis. It is possible to perform the hand shake correction test according to the different axial vibration magnitudes by arranging the test object 261 at various angles or adjusting the inclination angle of the test object 261. [

The embodiments shown in Figs. 3A to 3C are illustrative, and the present invention is not limited to the embodiments shown. For example, the ports 21 can be arranged in various ways and the vibration axis can be set in various ways. Therefore, the present invention is not limited to the embodiments shown.

It is advantageous in the exciter 20 according to the invention that the vibrations by the drive are generated in a predetermined manner and the vibrations can be controlled. Vibration may be generated, for example, by a driving device such as a DD motor, and vibration control means controlling the operation of the driving device.

Fig. 4 shows an embodiment of the excitation control structure according to the present invention.

4, the control unit according to the present invention can include a vibration profile generation unit 41 and the operation driver 42 installed in the drive apparatus includes an operational amplifier 421, a speed controller 422, An operation unit 423 and an operation unit 424. And the operation of the drive device 25 can be controlled by the operation driver 42 and the operation state of the drive device 43 can be detected by the sensor 44 such as an encoder.

Each unit included in the driving driver 42 may have an electronic element, a program, or a structure in which they are combined.

In order to generate vibration in the drive device 25, a vibration profile may first be generated by a control unit provided in a control device such as a personal computer. The vibration profile may include, for example, amplitude, frequency, wave form, or velocity. The amplitude setting may include the position of the oscillation axis in one cycle, the frequency may include the rotational speed of the oscillation axis, and the waveform may refer to a form of oscillation of the oscillation axis, such as, for example, a sinusoidal wave, do. For example, the vibration profile may include position and velocity for one cycle, the period may be set to 100 占 퐏, and the position of the vibration axis, e.g., the origin position after one cycle, may be predetermined. The vibration profile may be a plurality of same or different vibration profiles, and each vibration profile may be transmitted to the speed controller 422 and the torque controller 423 via the operational amplifier 421 at regular intervals such as 100 占 퐏, for example. And thus the vibration of the driving device 25 can be controlled. Whether or not the driving device 25 is vibrated according to a given vibration profile can be detected by the sensor 44 and fed back to the calculation unit 424 and the operational amplifier 421. [ In this way, the vibration of the drive unit can be controlled by the control unit 41.

The vibration profile may be prepared in advance and transmitted to the speed controller 422 and the torque controller 423, and a plurality of vibration profiles may be prepared in advance. To this end, a position command buffer may be formed in the operation driver 42. The vibration profile may be transmitted to the speed controller 422 and the torque controller 423 at a period of, for example, 100 占 퐏, and three maximum position commands may be stored in the position command buffer, for example. The manner in which the position command is input / output in the position command buffer may be, for example, a FIFO (First In First Out) method, but is not limited thereto. If a position command related to one vibration profile of the position command buffer is output, the next position command can be output standby and a position command related to the new vibration profile can be stored. The control unit can confirm the number of position commands stored in the position command buffer. Further, the driving device 25 may be gain tuned to enable operation in accordance with the vibration profile, or a driving device 25 suitable for the tuning may be selected.

The drive device 25 can be controlled in various ways and the present invention is not limited to the embodiments shown.

The exciter according to the present invention has an advantage that the inspection efficiency is improved by simultaneously performing the hand shake correction test on each of the cameras fixed to the plurality of ports rotating along one axis. In addition, the vibrator according to the present invention generates vibrations with respect to two directions by generating vibration based on one direction, thereby reducing the time required for the vibration test and simplifying the vibration generating structure .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

100: Test apparatus
120: exciter 121: port
125: drive unit 130: chart module
131: chart unit 132: fixed frame
133: Horizontal guide 134: Vertical guide
133a, 133b: fixed unit 150: handler
150a: Head 150b: Feed guide
160: Socket 11, 11a, 11b: Tray
12: Input unit 13: Operation unit
20: Shaker 21: Port
22: rotational vibration unit 23: sensor module
24: rotation supporting unit 25: driving device
27, 28: fixed frame 29: base substrate
30: chart unit 42: generating unit
42: Operation driver 44: Sensor
311: Pisce shape

Claims (6)

A rotary vibration unit (22) in which a plurality of ports (21) capable of fixing a test object having a camera module are arranged, respectively;
A first fixing frame 27 and a second fixing frame 28 coupled to one portion and another portion of the rotary vibration unit 22; And
And a driving device (25) for rotationally vibrating the rotary vibration unit (22) with the one side and the other side as the rotary shaft,
The plurality of ports (21) are simultaneously vibrated by the drive device (25); And
Wherein the test object is fixed in a predetermined direction in the plurality of ports (21). 2. The coaxial multi-port exciter according to claim 1, wherein the predetermined direction is inclined at an angle between 0 and 90 degrees with respect to the rotation axis. 2. The coaxial multi-port exciter according to claim 1, further comprising an encoder or gyro sensor for measuring vibration torsion on the rotation axis. A control unit; And
A socket for tilting the test object with the camera module having the plurality of ports 121 being simultaneously oscillated by one rotation axis and disposed at least one of the plurality of ports 121 to be inclined with respect to the rotation axis, And a vibrator (120) having a drive for driving,
Wherein the control unit generates a position and velocity profile for controlling vibration of the drive device, the vibration being generated with respect to the vibration axis in accordance with the position and velocity profile; And
And a chart module (130) having a pit shape corresponding to the plurality of ports (121). The apparatus according to claim 4, further comprising a handler (150) for supplying and discharging the test object to the socket. delete

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