RGB color sensors vs mark sensors

RGB color sensors and mark sensors both measure color but differ in principle, performance, and use cases. This article explains their differences and industrial applications.

1. Principle: RGB sensors use color filters to measure relative intensities of red, green, and blue. Mark sensors detect position and orientation by sensing reflective marks on a surface, comparing reflected intensity against surrounding material.

2. Performance: RGB sensors can measure many colors but may be affected by light source and environment and typically offer 8‑ or 16‑bit resolution. Mark sensors are tuned to specific illumination and are optimized for repeatable mark detection rather than full color matching.

3. Applications: both are used in packaging, battery, food, pharmaceutical, automotive, printing, and other industries for color recognition and presence checks. Choose the sensor type according to accuracy, lighting, and target surface.

Atonm (Guangzhou) Intelligent Technology Co., Ltd. provides sample testing and customized solutions to reduce the risk of purchasing unsuitable devices. Contact for details.