Infrared light is used in pulse oximeters, wearable health trackers, and spectroscopy devices to measure heart rate, oxygen saturation, and tissue properties — non-invasively and in real-time. Compact IR LEDs enable integration into consumer health devices.

Infrared illumination enables accurate 2D/3D facial mapping and iris scanning, commonly used in smartphones, smart locks, and access control systems. IR provides consistent lighting unaffected by ambient conditions, improving biometric reliability.

IR LEDs serve as the invisible light source for night vision cameras and security systems. They allow monitoring in total darkness without alerting subjects, making them essential for military-grade optics, home security, and wildlife observation.

Traditional IR LEDs (especially around 850–940 nm) are still the backbone of remote control systems for TVs, air conditioners, and more. They also support short-range wireless communication between embedded devices.

Used in optical sensors and machine vision systems, IR LEDs help detect product presence, alignment, or flaws on high-speed production lines. The narrow wavelength band offers improved precision and contrast over visible light in challenging environments.

Used in optical sensors and machine vision systems, IR LEDs help detect product presence, alignment, or flaws on high-speed production lines. The narrow wavelength band offers improved precision and contrast over visible light in challenging environments.