Before revision: SPIE Press, Bellingham, 2008, p.255 Lightpath OpticsLightpath Optics : URL IngenericFISBA Diameter +0/-0.010 mm +/-0.005 mm 0,005 mm +/- 0.005 mm Center thickness +/-0,012 mm +/- 0.010 mm 0,010 mm +/- 0.01 mm Alignment 2,5 min (axis) < 1.5min (angular) - - 5 µm Scratch-Dig 20-10 20-10/10-5 - 20-10 Abbe-Number +/-0.5% +/-1% 1% - Surface Roughness - <3 nm 10 nm 5 nm 4 nmIndex of Refraction +/-0.0003 +/-0.001 0,001 -Wedge 0.01mm +/-1 arcmin 1 arcmin 3' For aspherical lenses, the design should be able to tolerate 0.010 mm of lateral shear between surfaces plus 5 micrometres Total Internal Reflection of wedge (across the part without considering the lateral shear) to be considered robust.
After revision: SPIE Press, Bellingham, 2008, p.255 Lightpath TechnologiesLightpath Technologies : URL IngenericFISBA Diameter +0/-0.010 mm +/-0.005 mm 0,005 mm +/- 0.005 mm Center thickness +/-0,012 mm +/- 0.010 mm 0,010 mm +/- 0.01 mm Alignment 2,5 min (axis) < 1.5min (angular) - - 5 µm Scratch-Dig 20-10 20-10/10-5 - 20-10 Abbe-Number +/-0.5% +/-1% 1% - Surface Roughness - <3 nm 10 nm 5 nm 4 nmIndex of Refraction +/-0.0003 +/-0.001 0,001 -Wedge 0.01mm +/-1 arcmin 1 arcmin 3' For aspherical lenses, the design should be able to tolerate 0.010 mm of lateral shear between surfaces plus 5 micrometres Total Internal Reflection of wedge (across the part without considering the lateral shear) to be considered robust.