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Surface Flatness:

Scratch/Dig:

Eccentricity:

Focal Length Tolerance

Diameter Tolerance:

Thickness Tolerance:

Clear Aperture:

Coating：

Processing Range：

Clear Optical Glass BK7，SILCON，CAF2，MGF2

< λ/5 @ 633nm

< 40/20 (both sides)

≤ 1arcmin

< ± 1%

< + 0.00/ - 0.10mm

< ± 0.1

≥ 90% of diameter

AR OR BBAR

5~260mm