Editor’s note: This article will be in two parts. Part 1 is component-related and Part 2 is applications. Please also see Planet Analog blog “LEDs Are Photodiodes Too” as an intro to this article.

CMOS image sensors have become a cornerstone of modern imaging technology, integrating photodiodes with on-chip signal processing to convert light into precise electronic data. Central to their ...

“The purest and most thoughtful minds are those which love color the most” – John Ruskin, The Stones of Venice. Colors… Would it be red or green today? Maybe blue — Blue is a deeply sneaky color, my ...

Ambient light sensors (ALSs) are photodetectors that approximate the human eye’s response to light intensity under a variety of lighting conditions and through different attenuation materials. They’re ...