TWI437228B - Holder testing apparatus and testing method - Google Patents

Description

Mirror seat test device and test method

The invention relates to a testing device and a testing method, in particular to a testing device and a testing method for performing surface resistance testing on a lens holder of a lens module.

With the development of camera technology, the lens module has been widely used in various types of camera devices. The combination of the lens module and various portable electronic devices such as mobile phones and computers has been favored by many consumers.

However, as portable electronic devices are moving toward functional diversification, their components are becoming more and more complex, and most of the components need to be powered to work, which makes the portable electronic device susceptible to electromagnetic interference. And affect normal work.

The lens module is widely used in various portable electronic devices as an essential component of an imaging device, and generally includes a lens, a lens holder, a filter, an image sensor, and the like. For the design method of the lens, please refer to the paper Aspheric lens design published by Chao et al. in 2000 IEEE Ultrasonics Symposium. In order to reduce the degree of electromagnetic interference of the image sensor, it is generally required to apply an anti-electromagnetic interference (EMI) coating on the surface of the mirror holder.

After the surface of the mirror base is coated with an electromagnetic interference (EMI) coating, the electrostat is used to test whether the resistance value of the coating meets the requirements. Whether it is good. The usual practice is to sample and manually operate the electrometer to test the resistance of the sample coating. This method is time consuming and has large measurement errors and low yield.

In view of this, it is necessary to provide an automatic mirror mount test device and an automated test method capable of quickly and accurately testing the resistivity of the surface of the mirror mount against electromagnetic interference interference coatings and improving the yield.

In the following, an automatic mirror test device and an automated mirror test method capable of accurately and quickly testing the surface of the mirror mount against electromagnetic interference coatings will be described.

A lens holder testing device for testing resistance of an electromagnetic interference preventing coating on a plurality of lens holder surfaces, wherein the lens holder testing device comprises: a carrying platform, the carrying platform carrying the array of the plurality of lens holders And a test unit, the carrier platform moves in a coordinate plane thereof, and sequentially moves the plurality of lens holders to be aligned with the test unit, and the test unit sequentially performs an electromagnetic interference coating on the surface of the plurality of lens holders. The resistance is tested.

The lens holder test device further includes a control unit for controlling the movement of the carrier platform within the plane coordinates thereof, and sequentially moving the plurality of lens holders to be aligned with the test unit, and the test unit sequentially processes the plurality of mirrors The resistance of the anti-electromagnetic interference coating on the seat surface is tested, and the test unit sends the test result and the position code value of the corresponding mirror base to the control unit. The control unit receives the test result to determine whether the corresponding lens holder is a good product, and records the position code value of the non-good lens holder. The lens holder testing device further includes a removing device, and the removing device has a chuck. The control unit controls the removal device to clamp the non-good lens holder and remove it.

And a lens holder test method using the above-mentioned lens holder test device, comprising the steps of: (1) providing a test stand test device; (2) the test unit sequentially measuring the plurality of lens mounts, and measuring the result And the position code value of the corresponding lens holder is sequentially sent to the control unit; (3) the control unit determines whether the corresponding lens holder is a good product according to the test result, and records the position code value of the non-good lens holder; (4) The control unit controls the non-good lens holder to be aligned with the clamping unit according to the position coded value of the non-good lens holder, thereby controlling the clamping unit to remove the non-good lens holder aligned with the clamping unit.

Compared with the prior art, the mirror test device and the test method quickly measure the efficiency of the measurement by using the automatic control probe to quickly measure the plurality of lens holders, and even achieve the goal of not measuring all of the samples without sampling. , which has improved the yield rate.

10,20‧‧‧Mirror test device

11,21‧‧‧bearing platform

12,22‧‧‧Test unit

13‧‧‧Control unit

14‧‧‧Remove unit

15‧‧‧Base

16‧‧‧ bracket

17‧‧‧Leverage

110,210‧‧‧ mirror base

121,221‧‧‧ probe

131‧‧‧Power supply

132‧‧‧Signal Processing Unit

133‧‧‧Location data memory

141‧‧‧ chuck

18‧‧‧Servo motor

1 is a schematic structural view of a lens holder testing device according to a first embodiment of the present invention.

2 is a schematic structural view of a lens holder testing device according to a second embodiment of the present invention.

The invention will now be described in further detail with reference to the drawings.

Referring to FIG. 1, a first embodiment of the present invention provides a lens holder testing device 10 for testing the resistance of an electromagnetic interference coating on the outer circumferential surface of the lens holder 110. The lens holder testing device 10 includes a carrying platform 11 , a testing unit 12 and a control list Yuan 13.

The carrying platform 11 is configured to carry an array of a plurality of lens mounts 110. The carrying platform 11 is movable in a plane in which it is located. Preferably, the mirror testing device 10 further includes a base 15 and two independent stepping motors (not shown). The carrying platform 11 connects the two steps. Into the motor, the control unit 13 is electrically connected to the two independent stepping motors to provide electrical pulses to the two independent stepping motor electrical pulses to drive the carrying platform 11 relative to the base 15 respectively along FIG. The X-axis and Y-axis coordinates shown are moved.

The test unit 12 is located above the carrying platform 11 and is electrically connected to the control unit 13 for testing the resistance of the surface of the plurality of mirror mounts 110, preferably The test unit 12 can be an electrometer and the electrometer includes a pair of probes 121.

Specifically, the carrying platform 11 moves within the coordinate coordinates of the plane, and moves in the X and Y axis coordinate planes as shown in FIG. 1 , and the plurality of lens mounts 110 are sequentially moved to be aligned with the testing unit 12 . The needle 121 contacts any two points on the outer circumferential surface of the lens holder 110 to measure the resistance of the outer circumferential surface of the lens holder 110 against electromagnetic interference coating. Then, the testing unit 12 sequentially prevents electromagnetic interference on the outer circumferential surface of the next lens holder 110. The resistance of the coating was tested.

The control unit 13 includes a power source 131, a resistance signal processing unit 132 and a position data memory 133. Specifically, the power source 131 provides electrical pulses to the two independent stepping motors to operate the carrier platform. 11 moves in the X-axis coordinate direction and the Y-axis coordinate direction.

The test unit 12 is electrically connected to the resistance signal processing unit 132. The test unit 12 sequentially tests the resistance of the outer circumferential surface of the plurality of lens holders 110, and sequentially compares the test result with the corresponding lens holder. The position code values of 110 are sent to the resistance signal processing unit 132 and the position data memory 133, respectively. Preferably, the test result is a resistance value, the resistance signal processing unit 132 has a preset reference value, and the resistance signal processing unit 133 receives the test result and compares it with the reference value to determine whether the test result is Within the range of the good value, it is determined whether the corresponding lens mount 110 is a good product, and the position data memory 133 records the position code value of the non-good lens mount 110. Preferably, the position code value of the non-good lens holder 110 is its position code value. Specifically, FIG. 1 shows six lens holders 110, and the position code values are (1, 1), (1, 2), (1,3), (2,1), (2,2), and (2,3). The test unit 12 pre-stores the position code values of the plurality of lens holders 110. The test unit 12 sequentially tests the resistance of the outer circumferential surface of the lens holder 110 against the electromagnetic interference coating, and sequentially encodes the position of the corresponding lens holder 110. The value is sent to the location data memory 133.

The mount test apparatus 10 further includes a removal device 14 that includes a pair of collets 141 for removing the non-conformal mirror mount 110 of the plurality of mounts 110. Specifically, the control unit 13 controls the loading platform 12 to move in the coordinate plane of the X and Y axes according to the position coded value of the non-good lens holder 110, and sequentially moves the non-good lens holder 110 to the one. Aligning the collet 141, the pair of collets 141 sequentially pick up and remove them.

Preferably, the lens holder testing device further includes a bracket 16 fixed to the base 15, and the testing unit 12 and the removing unit 14 are respectively connected to two ends of a lever 17. A servo motor 18 is connected between the lever 17 and the bracket 16. The control unit 13 supplies a current to the servo motor 18 to rotate, so that the lever 17 can be rotated around the bracket 16, thereby causing the test unit 12 to rotate. The removal unit 14 exchanges positions with each other, and the control unit 13 controls the test unit 12 to perform resistance test on the plurality of lens holders 110 or control the removal unit 14 to remove the non-good lens holder 110.

The steps of the lens holder testing method of the lens holder testing device 10 of the first embodiment provided by the present invention are as follows: (1) providing the lens holder testing device 10; (2) the testing unit 12 sequentially measuring the plurality of lens holders 110 And the measurement result is sent to the control unit 13 in sequence; (3) the control unit 13 determines whether the corresponding lens holder is a good product according to the test result, and records the position code value of the non-good lens holder; (4) the control The unit 13 controls the removal unit 14 to remove the non-good lens holder according to the position code value of the non-good lens holder.

The present invention provides a lens holder testing device 10 and a lens holder testing method according to a first embodiment, which are provided by a test unit 12, a carrying platform 11 carrying a plurality of lens mounts 110, and a removing device 14, and via the control The unit 1413 controls the movement of the carrying platform 11 to realize the automation of the resistance test of the electromagnetic interference coating of the plurality of lens holders 110 by the testing unit 12, and controls the movement of the carrying platform to automatically remove the non-good lens holder 110, thereby realizing The rapid measurement of a plurality of mirror holders reduces the test time, greatly improves the efficiency of the test, and even achieves the goal of not measuring all of the samples, and further improves the yield.

Please refer to the lens holder testing device 20 of the second embodiment provided in FIG. 2, which is different from the lens holder testing device 10 of the first embodiment in that the testing unit 22 includes a plurality of pairs of probes 221, and the carrying platform 21 Carrying a plurality of lens holders 210, the plurality of lens holders 210 are arranged in an array, the test unit has a plurality of pairs of probes 221, and the plurality of pairs of probes 221 may further comprise one or more rows of the plurality of lens holders of the array 210 conducts resistance test of anti-electromagnetic interference coating, which saves test time and improves test efficiency.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧Mirror mount tester

11‧‧‧Loading platform

12‧‧‧Test unit

13‧‧‧Control unit

14‧‧‧Remove unit

15‧‧‧Base

16‧‧‧ bracket

17‧‧‧Leverage

110‧‧‧ mirror base

121‧‧‧Probe

131‧‧‧Power supply

132‧‧‧Signal Processing Unit

133‧‧‧Location data memory

141‧‧‧ chuck

18‧‧‧Servo motor

Claims (8)

A lens holder testing device for testing the resistance of an electromagnetic interference preventing coating on a plurality of mirror base surfaces, the improvement comprising the mirror mounting device comprising: a carrying platform, the carrying platform carrying the plurality of mirror blocks An array of control units for controlling movement of the carrier platform within its plane coordinates; and a test unit electrically connected to the control unit, the carrier platform carrying the plurality of lens holders for movement within the plane coordinates thereof, in turn The plurality of lens holders are aligned with the test unit, and the test unit sequentially tests the resistance of the electromagnetic interference coating on the surface of the plurality of mirror mounts, and sends the test result to the position code value of the mirror holder corresponding thereto To the control unit. The lens holder testing device of claim 1, wherein the lens holder testing device further comprises two independently controlled stepping motors, the carrying platform connecting the two stepping motors, the control unit and the two A separate stepper motor is electrically coupled to provide electrical pulses to the two independent stepper motors to drive the carrier platform to move along two perpendicular axes of the plane in which it is located. The lens holder test device of claim 1, wherein the test unit is an electrometer, and the electrometer comprises a pair of probes. The lens holder test device of claim 2, wherein the control unit comprises a power source, a resistor signal processing unit, and a position data memory, wherein the power source supplies electrical pulses to the two stepping motors. The driving unit is driven to move along two vertical coordinate axes of the plane in which it is located, and the test unit respectively sends the test result and the position code value of the corresponding mirror base to the resistance signal processing unit and the position data record. Recalling the body. The lens holder test device of claim 1, wherein the lens holder test device further comprises a removal device having a collet. The lens holder test device of claim 5, wherein the lens holder test device further comprises a base, a bracket and a lever, the bracket is located on the base, and the lever is fixed on the bracket, The connecting portion of the lever and the bracket has a servo motor, and the removing device and the testing unit are respectively connected to two ends of the lever, the control unit is electrically connected to the servo motor, and the control unit provides a current to the servo motor Rotating to rotate the lever around the bracket to adjust the position of the test unit and the removing unit to control the mirror test device to test or remove the lens holder. A lens holder testing method includes the following steps: (1) providing a lens holder testing device, comprising: a testing unit, a clamping unit, a control unit and a carrying platform carrying an array of a plurality of lens holders; (2) the test unit sequentially measures the resistance of the anti-electromagnetic interference coating on the surface of the plurality of mirror mounts, and sequentially sends the measured resistance value and the position code value of the corresponding mirror mount to the control unit; (3) The control unit includes a resistance signal processing unit and a position data memory, and the test unit respectively sends the measured resistance value and the position code value of the corresponding lens holder to the resistance signal processing unit and the position data memory, and the resistance signal The processing unit determines whether the corresponding lens holder is a good product according to the measured resistance value, and the position coded value processor records the position code value of the non-good lens holder; (4) the control unit according to the position code value of the non-good lens holder And controlling the clamping unit to remove the non-good lens holder. The method for testing a lens holder according to claim 7, wherein the resistance signal processing unit has a predetermined reference value, and the resistance information unit receives the test result and compares it with the reference value to determine whether it is Within the range of the resistance value of the good product, it is judged whether the lens holder corresponding to the test result is a good product.