Electronic Design

LED/Photodetector Array Provides Non-Contact 2D Mapping of Blood Oxygen

You’re undoubtedly familiar with the clip-on blood oxygen sensor and meter that uses a pair of LEDs and a photosensor. This non-intrusive transmissive-light device—which took decades to develop, ...
Nature

Wearable red–green–blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing

Deformable full-colour light-emitting diodes with ultrafine pixels are essential for wearable electronics, which requires the conformal integration on curvilinear surface as well as retina-like ...
EDN

RGB LED array delivers 221 lm

Composed of three red, green, and blue LEDs in a 3-D-configuration providing a viewing angle of 120°, the Ledium OVTL09LGM Series RGB LED array can deliver almost any color at up to 221 lm. Able to ...
EDN

LED tube light, Part 2: Behind the LED array

Last Thursday I posted pictures and findings from taking apart a LED T8 tube light. This post is a continuation. The light comprises 288 diodes arranged in 18 parallel strings with 16 diodes in each ...