Dimension Tolerance:        +0.0, -0.1mm

Thickness Tolerance:         ±0.2mm

Clear Aperture:                 >80%

Parallelism:                       1arc minute

Surface Quality:                40/20 scratch and dig

Wavefront Distortion:         L per 25mm @633mm

Bevel:                              <0.25mm x 45°

Please note：Other sizes are available upon request.

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