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This video explains how AOI systems use lighting to detect defects in PCBs:
Key Components of AOI Lighting
- LED Light Sources: Primarily red, green, blue, and white LEDs are used for their uniformity, longevity, and color-specific defect detection.
- Lighting Angles: Low-angle lighting is often used to highlight component edges, while high-angle lighting provides general illumination.
- RGB Ring Light: A commonly used configuration that combines multiple colors and angles to enhance the 3D contrast of solder joints.
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Web results
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Nanjing Hecho Technology CO.,Ltd
https://www.gohecho.com › automated-optical-inspecti...
Nanjing Hecho Technology CO.,Ltd
https://www.gohecho.com › automated-optical-inspecti...
Line Light Guide, Linear out of light design, can be used with cylindrical condenser lens. · High-intensity, seamless uniform linear lighting.Read more
AOI Lighting Techniques: Illuminating Defects for Superior ...
ALLPCB
https://www.allpcb.com › ... › PCB Manufacturing
ALLPCB
https://www.allpcb.com › ... › PCB Manufacturing
Aug 14, 2025 — In this comprehensive guide, we'll dive into AOI lighting types, AOI lighting angles, and AOI lighting setup to help you achieve superior PCB ...Read more
AOI Programming for Dummies: A Step by Step Guide to ...
aivon
https://www.aivon.com › Blog › PCB Manufacturing
aivon
https://www.aivon.com › Blog › PCB Manufacturing
Jan 27, 2026 — Master AOI programming with this beginner-friendly step-by-step guide to PCB inspection. Learn machine setup, fiducial teaching, ...
Beginner's Guide To Programming A Vision Inspection System
business.blog
https://smtpacklab.business.blog › 2025/11/07 › beginn...
business.blog
https://smtpacklab.business.blog › 2025/11/07 › beginn...
Nov 7, 2025 — Check lighting systems, including top, side, and backlights. Ensure the conveyor and PCB fixtures are stable and properly aligned. Verify ...Read more
The 2025 Guide to Automated Optical Inspection Systems
CubeFabs
https://cubefabs.com › resources › 2025-automated-opti...
CubeFabs
https://cubefabs.com › resources › 2025-automated-opti...
Automated Optical Inspection (AOI) refers to the methods, tools, and technologies used to monitor and optimize manufacturing quality control.Read more
Guide to Automated Optical Inspection (AOI)
Koh Young America
https://kohyoungamerica.com › guide-to-automated-opt...
Koh Young America
https://kohyoungamerica.com › guide-to-automated-opt...
Jun 25, 2025 — Traditional 2D AOI systems relied on image comparison and color contrast, which are prone to inaccuracies due to lighting, reflections, or board ...Read more
Automated Optical Inspection (AOI):
LCSC
https://www.lcsc.com › blog › comprehensive-guide-to-...
LCSC
https://www.lcsc.com › blog › comprehensive-guide-to-...
Jun 17, 2025 — AOI systems utilize ring-shaped RGB lighting to enhance the contrast of solder joints through combination of light angles and light colors.Read more
ANALYSIS OF OPTICAL INSPECTION FROM AOI AND AVI ...
electronics.org
https://www.electronics.org › technical_resource
electronics.org
https://www.electronics.org › technical_resource
PDF
by A YinCited by 7 — Not only the light sources are different, different AOI and AVI machines use different color light. Some AOI machines use infra-red light rather than white ...Read more
35 pages
What is Optical Inspection (AOI) System? A comprehensive ...
Intelgic
https://intelgic.com › what-is-automated-optical-inspectio...
Intelgic
https://intelgic.com › what-is-automated-optical-inspectio...
Oct 22, 2024 — An Automated Optical Inspection (AOI) system is an automated visual inspection machine used to detect defects or anomalies in manufacturing products, ...Read more
Holly AOI Training guideline RGB light.pptx
Slideshare
https://www.slideshare.net › Engineering
Slideshare
https://www.slideshare.net › Engineering
The document provides comprehensive training guidelines on Automated Optical Inspection (AOI) systems used in the SMT (Surface Mount Technology) field.