Light pipe 1.Diameter Tolerance: +0.0, -0.05mm 2.Center Thickness Tolerance: +/-0.05mm 3.Centration: +/-1 arc minutes

Light pipes 

Light pipes   Material:	Grade A optical glass or Fused Silica
Dimension Tolerance:	±0.05mm to ±0.005mm
Surface quality:	20/10 to 40/20
Clear Aperture:	>85%
Surface Figure:	λ/4 to 2λ@633nm
Centration:	3 arc minutes
Note:	Diameter: available from Φ1.0mm to Φ25mm 1.All surfaces (end-faces and cylinder)polished;2.Only end-faces polished;3.Only Cylinder polished.

Light pipes