Tiny manufacturing imperfections in optical components normally go unnoticed. Yet they can alter light in surprisingly ...

Learn why blue light can have negative, and sometimes positive, impacts on our health, and what to do to combat it. In today’s ever more connected world, it’s fair to say that some of us receive ...

If you had an array of high power addressable LEDs, how would you project them onto a wall? Perhaps you’d use a Fresnel lens, or maybe an individual lens on the top of each. [Joo] faced this problem ...