Your One-Stop Source for Mirror Blanks and Substrates

Rainbow Research Optics, Inc (RROI) offers laser quality mirror substrates at the lowest price. Our most commonly requested substrate materials are BK7, UV Fused Silica, or ZEORDUR®.

Check mark symbol λ/10 surface flatness
Check mark symbol 10-5 laser quality
Check mark symbol Stock inventory

Quick find: • Plane Mirror Blanks • Convex Spherical Mirror Blanks • Concave Spherical Mirror Blanks • Square Mirror Blanks • Rectangular Mirror Blanks • Elliptical Mirror Blanks

STANDARD MIRROR BLANKS

Customization is available beyond what’s listed. Contact us with your requirements.

Plane Mirror Blanks  (part code: MP)
Substrate: UV Fused Silica, BK7 or Zerodur
Diameter Tolerance: +0.0/-0.20 mm
Thickness Tolerance: ±0.25 mm
S1 Surface Quality: 10-5 laser quality
S2 Surface Quality: Commercial polish
Parallelism: <3 arc min.
Clear Aperture: > 85% of diameter
Edge Bevel: 0.3 mm face width at 45°
Convex Spherical Mirror Blanks (part code: MX)
Substrate: BK7 or UV Fused Silica
Diameter Tolerance: +0.0/-0.20 mm
Thickness Tolerance: ±0.25 mm
S1 Surface Flatness: λ/10 @ 633 nm
S1 Surface Quality: 10-5 laser quality
Focal Length Tolerance: ± 0.5%
Centration Error: <3 arc min.
Clear Aperture: > 85% of diameter
Edge Bevel: 0.3 mm face width at 45°
Concave Spherical Mirror Blanks  (part code: MC)
Substrate: BK7 or UV Fused Silica
Diameter Tolerance: +0.0/-0.20 mm
Thickness Tolerance: ±0.25 mm
S1 Surface Flatness: λ/10 @ 633 nm
S1 Surface Quality: 10-5 laser quality
Focal Length Tolerance: ± 0.5%
Centration Error: <3 arc min.
Clear Aperture: > 85% of diameter
Edge Bevel: 0.3 mm face width at 45°
Square Mirror Blanks  (part code: SM)
Substrate: BK7 or UV Fused Silica
Dimensional Tolerance:
+0.0/-0.20 mm
Thickness Tolerance:
±0.25 mm
S1 Surface Quality:
10-5 laser quality 
S2 Surface Quality:
Commercial polish
Parallelism: <3 arc min.
Clear Aperture:
> 85% of diameter
Edge Bevel: 0.3 mm face width at 45°

Rectangular Mirror Blanks  (part code: RM)
Substrate: BK7 or UV Fused Silica
Dimensional Tolerance:
+0.0/-0.20 mm
Thickness Tolerance:
±0.25 mm
S1 Surface Quality:
10-5 laser quality 
S2 Surface Quality:
Commercial polish
Parallelism:
<3 arc min.
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°
Elliptical Mirror Blanks  (part code: EM)
Substrate: BK7 or UV Fused Silica
Diameter Tolerance:
+0.0/-0.20 mm
Thickness Tolerance:
±0.25 mm
S1 Surface Quality:
10-5 laser quality 
S2 Surface Quality:
Commercial polish
Parallelism:
<3 arc min.
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°

 Rainbow Research Optics, Inc (RROI) is ISO 9001:2015 Certified and ITAR Registered