CD Optics and "Scratch Resistance"
Click on image to show area of compact disc with laser beam inside, with
dimensions to scale.
![[Schematic of CD focusing]](cd-focus.gif)
"http://www.physics.udel.edu/~watson/scen103/cd-focus.html"
Last updated November 29, 2004.
Copyright George Watson, Univ. of Delaware, 1996.