Two different radius are in everyone surface. Two surface are both so that.
Single lens with both surfaces are complex surface.Or two surfaces of the lens with composite concentric annular and many focus of complex surfaces,
Material is UV grade fused silica
Centration is 1 arc min
Length tolerance is 0.1mm
Surface quality is 60/40scratch and dig
Focus tolerance is ±1%
Post by Yan Zhang Electronic Components & Supplies @2011-12-20 16:10:25