retroreflector Corner cube Customized specifications avaialbe Commercial & High precison avaible for different demand Corner cube retroreflector Material: H-K9L CDGMDimension: 38.10 +0.00/-0.10Height: 29.21 +/-0.25Surface Quality: 60-40Clear Aperture: 95% of areaOptical Power: 1/4 RingIrregularity: 1/4 Ring1. Surface "A" shall be perpendicular to the diagonal of the corner cube to within 10 arc min.2. Incident and refected beams shall be parallel to within 3 arc seconds.Tolerance Chart

Attribute	Commercial	High Precison
Typical material	BK7,Fused Silica and other optic glass
Typical dimension(D*H)mm	10*7.5,12.7*9.5,25.4*19,138*28.5,50.8*37.5mm
Dimension(D)tolerance	+0.0,-0.2mm	+0.0,-0.1mm
Dimension(H)tolerance	+/-0.3mm	+/-0.15mm
Clear aperture	>85%	>90%
Deviation	<5"	<3"
Surface quality	60-40 scratch & dig (<=25.4*19mm);80-50 scratch & dig(>25.4*19mm)	40-20 scratch & dig (<=25.4*19mm);60-40 scratch & dig(>25.4*19mm)
Wavefront distortion	lambda/2 at 632.8nm(<=25.4*19mm);lambda at 632.8nm(>25.4*19mm)	lambda/4 at 632.8nm(<=25.4*19mm);lambda/2 at 632.8nm(>25.4*19mm)
Protective bevel	0.1-0.3mm for D10-D25.4mm	0.05-0.2mm for D10-D25.4mm

Retro-reflectors Corner Cube