Closed Angle Retroreflectors
Specifications:
Material: N-BK7 Grade A, optical glass equivalently
Dimension Tolerance: ±0.1mm
Clear Aperture: >85%
Deviation: 8 arc second
Flatness: λ@632.8nm on big surface, λ/4@632.8nm on other surface
Surface Quality: 60-40 Scratch and dig, 40-20 Scratch and dig is available
Chamfer: 0.2-0.3mm
Coating: Specified by customer