Your One-Stop Source for Optical Filters

Rainbow Research Optics, Inc. (RROI) is a leading manufacture of precision quality optical filters. RROI filters are available unmounted or mounted within a black anodized metal rings. Custom shapes and sizes available with quick delivery. Engraving optional.

Check mark symbol Standard, custom, and off-the-shelf filters
Check mark symbol In-house coating and environmental testing
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Quick find:

STANDARD FILTERS

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

Interference Bandpass Filters  (part code: BF)
Substrate: Fused Silica
Surface Figure: Commercial Polish
Surface Quality: 80-50
Standard Diameter: 0.50 in, 1.00 in, and 2.00 in
Diameter Tolerance: +0.0/-0.25 mm
Standard Thickness: 0.250 in nominal
CWL Tolerance: ± 20% of FWHM
Bandwidth Tolerance: ± 20% of FWHM
Clear Aperture: > 70% of diameter (0.50 in), > 80% of diameter (1.00 in), > 90% of diameter (2.00 in)
Temperature Range: -60° C to +70° C
Custom Sizing Available: Yes
Assembly Type: Optional, Anodized Aluminum Ring
Neutral Density Filters (part code: RND)
Substrate: Schott B270 glass
Surface Figure: Commercial Polish
Surface Quality: 80-50
Standard Size: 1.00″ round, 2.00″ round, 2.00″ x 2.00″ square
Size Tolerance: + 0.00 / -0.30
Standard Thickness: 0.5 mm to 3.00 mm
Optical Density: nominal @ 546 nm
Transmittance: 0.001% to 91.20%
Clear Aperture: > 85% of diameter
Plate Beamsplitters – High Energy (part code: PRB)
Substrate: UV Fused Silica, CaF2, or Bk7
Surface Figure:
λ/10 @ 633 nm
Surface Quality:
10-5 Laser Quality
Standard Diameter: 
0.50 in to 4.0 in
Diameter Tolerance:
+0.0/-0.20 mm
Standard Thickness:
0.125 in to 0.50 in
Thickness Tolerance:
±0.25 mm
Wedge: 
≤ 3 arcmin.
AR Coating:
R < 0.25%
Reflectance: 10% to 99%
Damage Threshold: > 10 J/cm2, 10 ns pulse
Standard Wavelengths:
193 nm to 2940 nm
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°
Adhesion and Durability:
Per MIL-C-675A
Cube Beamsplitters – Partially Reflective (part code: PCB)
Substrate: Bk7
Surface Figure:
λ/4 @ 633 nm
Surface Quality:
10-5 Laser Quality
Standard Size:
5.0 mm to 2.0 in
Size Tolerance:
+0.0/-0.20 mm
Beam Deviation: 
≤ 3 arcmin.
AR Coating:
R < 0.25%
Reflectance: 20% to 80%
Damage Threshold: > 100 mJ/cm2, 10 ns pulse
Standard Wavelengths:
488 nm to 1550 nm
Polarization: S, P, UNP
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°
Adhesion and Durability:
Per MIL-C-675A
Cube Beamsplitters – Non-Polarizing (part code: NCB)
Substrate: Bk7
Surface Figure:
λ/4 @ 633 nm
Surface Quality:
20-10 Laser Quality
Standard Size:
10.0  mm to 2.0 in
Size Tolerance:
+0.0/-0.25 mm
Runp: 50% ± 10%
Rs-Rp, Ts-Tp:
< 5%
AR Coating:
R < 0.25%
Damage Threshold: > 1 J/cm2, 10 nsec pulse
Standard Wavelengths:
413 nm to 1550 nm
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°
Adhesion and Durability:
Per MIL-C-675A
Harmonic Separators – High Energy (part code: HHS)
Substrate: UV Fused Silica or BK7
Surface Figure:
λ/10 @ 633 nm
Surface Quality:
10-5 Laser Quality
Standard Diameter:
0.5 in to 2.0 in
Diameter Tolerance:
+0.0/-0.25 mm
Standard Thickness: 0.25 in to 0.375 in
Thickness Tolerance: ± 0.25 mm
Runp: > 99.5%
Tunp: > 90.0%
Damage Threshold: > 5 J/cm2, 10 nsec pulse
Standard Wavelengths (nm): 
266, 355, 532, and 1064
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°
Adhesion and Durability:
Per MIL-C-675A
Dichroic Beamsplitters (part code: SWP)
 Substrate: UV Fused Silica or BK7
Surface Figure:
λ/10 @ 633 nm
Surface Quality:
10-5 Laser Quality
Diameter Tolerance:
+0.0/-0.20 mm
Thickness Tolerance: ± 0.25 mm
Wedge: ≤ 3 arcmin.
AR Coating: R < 0.25%
Reflectance: > 99.5%
Avg. Transmission: SWP: Tave > 90%, LWP: Tave > 85%
Damage Threshold: > 5 J/cm2, 10 nsec
Clear Aperture:
> 85% of diameter
Edge Bevel:
0.3 mm face width at 45°
Adhesion and Durability:
Per MIL-C-675A

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