Chip Characters Defects Recognition Detection Case






Detection Requirement



Automatic visual recognition detects characters flaws on chips, Including chip characters Offset,chip characters lacked ink and chip characters ink-spilling.




Project Challenge



● How to detect impurities such as ink stains on the chip surface? Ordinary light cannot penetrate the oil stains and can not light up the characters on the chip.

● The characters on the chip are small, about 1mm*1mm, so a high-resolution telecentric lens is required for imaging observations.

● To achieve chip identification, it needs to meet the requirements of automatic and efficient detection, and require the frequency of taking pictures is 0.3 S/PCS, so gigabit network industrial cameras are required.




Solution Case



● For the camera, it uses POMEAS high-speed industrial camera

● For the telecentric lens, it uses 0.17X high resolution telecentric lens

● And match with red coaxial illumination




Case Demonstration





Core Components Introduction:



1)POMEAS High frame rate gigabit camera

In order to meet the requirements of automatic and efficient detection, we apply this POMEAS 10 megapixel industrial camera.

● High frame rate gigabit camera moving shot image in high speed, it can meet the requirements of 0.3s/pcs high-speed photo shot image recognition.

● Under high speed moving shot image, The image transmission is stable, no drop-frame, no cutout.




2)POMEAS high resolution telecentric lens: PMS-017HT110

In order to meet the requirements of characters clear imaging and defect recognition, We apply this 5MP telecentric lens with high resolution in this case.


● High resolution:  The resolution is up to 0.016mm, so the characters can be clearly imaged and defects can be accurately recognized by the software.

● Low distortion: TV distortion is as low as 0.01%. Characters will not be distorted due to lens distortion. And then the software will not occur the judgment result to be wrong;

● Extending depth-of-field: The depth of field is 11mm. It will not cause the software unable to capture clear images, even if the chip's position changes up and down during detection.




3)POMEAS red coaxial illumination

For POMEAS external design with coaxial illumination, There are coaxial red infrared  illumination, coaxial blue illumination, coaxial white illumination. In this case, we use the infrared illumination.


● With high penetrability, which can penetrate through the ink stain on the chip to clearly observe the characters defects.

● The image with high uniformity makes it easy to be recognized by software.

● Stroboscopic illumination with high brightness, suitable for moving shot image application scene.





Case Result Showing:



Chip qualified product actual image



Chip characters lacked ink actual image



Chip characters Offset actual image



Chip characters ink-spilling actual image




Application Advantage in this case


● Compact structure, automatic detection can be realized by combining with the platform.

● With successful cases, POMEAS supplys one-stop purchase of vision lens and components!

● We POMEAS supply technical support and even welcome customers all over the world take the lens and the solution to do door-to-door test sample in our company. We also have free trial service!



With our core technology supporting, POMEAS has been committed to support over 1000 customers in over 30 countries to assist them to improve their Comprehensive competitive power to become a leader in industry.







You may also be interested in the following information

Automated Identification And Detection Solution On Earphone Module Chip Bubble Defects

Characters And Soldering Tin Defects Recognition Detection For Hexahedrons Inductor Or Resistor

Detect Out The Scratches and Fingerprint On Bank Card

Importance of Screen RGB Detection with Solution


Let’s help you to find the right solution for your project!


Add.:No.68, Chongwei Road, Baizhoubian, East district, Dongguan, China, 523000


Tel:+ 86-0769-2266 0867

Fax:+ 86-0769-2266 0857

Wechat QR code

Copyright © 2020-2080 POMEAS ICP备案号:粤ICP备16046605号 All Rights Reserved


Software Copyright :2021SR0176001 抄袭必究, 技术支持:誉新源科技