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®.

  • λ/10 surface flatness
  • 10-5 laser quality
  • Stock inventory

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°