Additional information
| Dimension | D=0.5" & t=1.5mm, D=0.5" & t=0.25", D=15mm & t=1.5mm, D=15mm, t=0.25", D=0.75" & t=1.5mm, D=0.75" & t=0.25", D=1.0" & t=1.5mm, D=1.0" & t=0.25" |
|---|---|
| Material | UV Grade Fused Silica, BK7 Grade A |
Elliptical Windows (EW)
Elliptical (45°)- Laser quality polish on both sides, uncoated
Elliptical windows are used for large angles of incidence so that they present a circular cross section to the incoming beam. They are offered for use at 45° and at Brewster’s angle. These elliptical plane windows are polished to a laser grade finish on both sides. Select a coating appropriate to your application or contact us with your special coating requirements.
| Surface Flatness: | If thickness ≤ 1.5mm : λ/4 @ 633nm If thickness > 1.5mm : λ/10 @ 633nm |
| Surface Quality: | <10/5 (both sides) |
| Wedge: | <3 arc min |
| Diameter Tolerance: | <+ 0.00 / – 0.20 mm |
| Thickness Tolerance: | <± 0.25 mm |
| Clear Aperture: | >85% of diameter |
| Bevel: | 0.3 mm (typical) x 45° |
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Elliptical Windows (EW)
