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Unit of Measure

Specifications

Materials

N/A Gray Glass

Transmitted Wavefront Error

N/A λ/4@633 nm

Parallelism

N/A < 1 arc·min

Surface Quality (Scratch-Dig)

N/A 60-40

Diameter Tolerance

N/A +0.0/-0.2 mm

Thickness Tolerance

N/A ±0.5 mm

Wavelength Range

N/A 400-700 nm

Optical Density Error

N/A ±5%@633 nm

Clear Aperture

N/A >90 %

Optical Density OD=log10(1/T)

N/A 0.2

Transmission

N/A 63 %

Thickness

N/A 1.52 mm