LCD - Day 27

I'm really happy that I received a package from my older brother today.  Sounds weird, I know, but I've been in a desperate need of a scanner.

This is my all-in-one.

So while I can't get a picture of it, I got to thinking about all scanners in general.  In order for the photoreceptor cells on a scanner head to work effectively, there must be a boat-load of light on the subject. (Which if you are scanning your doctorate's thesis, you might call it a 'Bright Idea'.) But the light that is actually created by a scanner is by means of LEDs.  The light is such a pure white as to not add extra color to the image it is scanning.  When looking at the light, though, you can see individual rays of red, green, and blue in certain points. So may one assume that scanners build an image based on RGB recreation?