Products: Standard Mirror Blanks

Standard Mirror Blanks image

Acton’s standard mirror substrates are made from select grades of the finest available optical materials.

Mirror blanks are suitable for beam-steering requirements and front-surface coatings.

Note: Mirror blanks are available with transmittance traces for an additional charge. Contact us at for more information.


Mirror Blanks

Part Number Diameter Thickness Substrate Material
W.5D-MB 0.5” (12.7mm) 0.250” (6.35mm) Corning 7980 0C or equivalent
W1D-MB 1.0” (25.4mm) 0.250” (6.35mm) Corning 7980 0C or equivalent
W1.5D-MB 1.5” (38.1mm) 0.200” (5mm) Corning 7980 0C or equivalent
W2D-MB 2.0” (50.8mm) 0.375” (9.53mm) Corning 7980 0C or equivalent



Material UV Laser Grade Fused Silica
Diameter Tolerance +0.00/-0.005”
Thickness Tolerance +/-0.25mm
Surface Figure Side 1: 1/10 Wave @ 632.8nm
Parallelism 3 arc min
Scratch/Dig 20-10
Chamfer 0.5mm x 45°
Clear Aperture Central 85%


UV fused silica transmission properties