Voice coil motor testing device and auxiliary device thereof
A voice coil motor and testing device technology, which is applied to measurement devices, line-of-sight measurement, measurement distance and other directions, can solve the problem that the single action behavior of the voice coil motor cannot be measured, the image quality of the camera module is poor, and it is difficult to distinguish And other issues
Inactive Publication Date: 2013-06-05
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology
When testing whether there is any abnormality in the operation of the voice coil motor assembled into the camera module, it is usually directly powered to the soft board connector of the camera module, but the current will pass through the driving circuit and the voice coil motor, if the camera module The image quality is not good, it is difficult to distinguish whether it is a software problem, a driver circuit chip problem, a circuit wiring problem or a problem with the voice coil motor alone
Therefore, this measurement method cannot measure the actuation behavior of the single voice coil motor assembled into the camera module
Method used
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[0014] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0015] The structure of the camera module 100 with a voice coil motor to be tested in this embodiment will be briefly described below. see figure 1 , the camera module 100 includes a flexible circuit board 110 , an image sensor (not shown) electrically connected to the flexible circuit board 110 , a lens barrel 120 and a voice coil motor 130 . The voice coil motor 130 includes a current input terminal 132a and a current output terminal 132b. The flexible circuit board 110 has two welding pads 112 corresponding to the current input terminal 132a and the current output terminal 132b. After the assembly of the camera module 100 is completed, the current input terminal 132a and the current output terminal 132b are welded to the corresponding pads 112 by copper-tin alloy to form two solder joints (not shown). The current input terminal 132a a...
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The invention provides a voice coil motor testing device comprising a pedestal and two probe seats, wherein the pedestal is provided with a first containing slot used for containing a voice coil motor and a groove communicated with the first containing slot; the groove extends towards two sides of the pedestal from the first containing slot; the two probe seats are respectively pivoted to two sides of the pedestal, where the groove is arranged; and each probe seat is provided with a probe which can be embedded or be far away from the groove relative to the rotation of a pivot along with the probe seat, thereby respectively contacting or being far away from the current input end and the current output end of the voice coil motor to be tested and realizing power-on or power-off control on the voice coil motor. The voice coil motor testing device also comprises a range finder used for measuring the moving distance of the electrified voice coil motor and comparing the distance with a standard value.
Description
technical field [0001] The invention relates to a voice coil motor testing device and its auxiliary device. Background technique [0002] With the development of camera technology, camera modules with auto-focus or zoom functions are widely used in camera devices for various purposes. Due to the advantages of small size, low power consumption and low price, voice coil motors are more suitable for use as focus or zoom actuators in camera modules. [0003] When the camera module is shipped to the customer, the image quality of the camera module is usually used as the judgment basis. However, there are many factors that affect the image quality of the camera module: such as the image sensor, the operating stability of the driving circuit, the stability of the voice coil motor itself, and the influence of the interface between various components. Most of the reasons are attributed to the excessive inclination angle generated by the voice coil motor during the actuation process...
Claims
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IPC IPC(8): G03B43/00G01C3/00
Inventor 廖家宏
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD