Interference Bandpass Filters

Thickness: 0.25″ nominal
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Reflective Neutral Density Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Absorptive Neutral Density Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Long Wave Pass Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Short Wave Pass Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Color Glass Bandpass Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Color Glass Long Wave Sharp Cut Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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 the diameter
Chamfer: 0.3mm at 45 typical

Heat Control Filters

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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

Thickness: VUV CaF2, UVFS or BK7
Surface Flatness: Figure: 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: Â ±0.5 %
Diameter Tolerance: +0.0/-0.20 mm
Thickness Tolerance: ±0.25 mm
Clear Aperture: >85% of the diameter
Chamfer: 0.3mm at 45 typical