Keye Vision Inspection system

Why is Light Source Important in Product Appearance Defect Detection?

August 27, 2024

In recent years, the concept of AI has been widely accepted by the public, and AI visual inspection is gradually being applied in the industrial sector for the detection of product appearance defects. Appearance defects in products can negatively impact aesthetics, comfort, and overall performance. This is why manufacturing companies are keen to detect these flaws promptly, allowing them to control quality and enhance the product's added value.

While the importance of algorithms in AI visual inspection is often emphasized, the lighting source directly affects image quality. The primary role of the lighting in AI visual inspection equipment is to overcome the interference from ambient light, ensuring image stability and achieving the highest possible contrast. High-contrast imaging makes it easier to detect product defects.

At KeyeTech, our AI image recognition equipment not only employs deep learning-based algorithms but also features our self-developed optical imaging system.

 

Design of Imaging Angles and Intensity in 3D Space

Currently, our AI image recognition devices utilize an optical imaging system where the lighting source configurations are categorized based on illumination methods: bright field and dark field illumination, structured light and strobe light. These methods work in conjunction with both the surface and internal characteristics of the objects being inspected, enabling comprehensive relational analysis. By projecting the light source onto the inspected objects and analyzing the distortions produced, we can demodulate the 3D information of the objects, allowing for precise location of product defects.

 

Multispectral Imaging from Ultraviolet to Infrared

KeyeTech's optical imaging system employs a full spectrum of ultraviolet to infrared, including polarized and fluorescent methods, to achieve comprehensive 360° detection of the objects. Defects invisible to the naked eye can be revealed with complete clarity, ensuring no blind spots or overlooked areas.

 

Energy-Efficient and Durable

Our optical imaging system uses LED lighting, which is compact, energy-efficient, and features fast response times. It also offers excellent monochromaticity, high reliability, and uniform, stable light output, making it easy to integrate for optimal imaging results on products.

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