Optical Filters
- Interference Bandpass Filters
- Reflective Neutral Density Filters
- Absorptive Neutral Density Filters
- Long Wave Pass Filters
- Short Wave Pass Filters
- Color Glass Bandpass Filters
- Color Glass Longwave Sharp Cut Filters
- Heat Control Filters
- Heat Absorbing Filters
Interference Bandpass Filters
Specifications:
- Thickness: 0.25″ nominal
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: Commercial Polish
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.25 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 80% of diameter
- Chamfer: 0.3mm at 45 typical
Reflective Neutral Density Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Absorptive Neutral Density Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Long Wave Pass Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Short Wave Pass Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Color Glass Bandpass Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Color Glass Long Wave Sharp Cut Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Heat Control Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
Heat Absorbing Filters
Specifications:
- Substrate material: VUV CaF2, UVFS or BK7
- Surface Flatness: λ/2 for Y-direction
λ/4 for X-direction @ 633nm - Surface Quality: 20-10 laser quality
- Centration Error:<3 arc min.
- Focal Length Tolerance:± 0.5 %
- Diameter Tolerance: +0.0/-0.20 mm
- Thickness Tolerance: ± 0.25 mm
- Clear Aperture: > 85% of diameter
- Chamfer: 0.3mm at 45 typical
