Close lens spacing reduces the total size and thus cost of any components of the multiple lens/sensors such as a sheet of lenses, a single lens substrate, or multiple sensors on one piece of silicon. For a circular lens of the prior art, all of the glass or plastic contributes light to...
The first series of units were man- ufactured with (nominally) 10 µm of silver below a plating of 3 µm of gold. The laser engraving should burn away the thin layer of gold on top of the silver plating in the process oxidizing the silver to black silver oxide. However, after a...