Optical Windows
BK7 and Fused Silica Windows
Specifications:
Material:
BK7 grade A optical glass
UV grade fused silica
Diameter: +0.0, -0.1 mm
Thickness: ± 0.2 mm
Parallelism: see table
Surface quality: see table
Both edges bevelled: 0.25 x 45°
Wavefront Distortion: l /10 per 25 mm. Surface quality: 20/10 scratch and dig |
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| f (mm) | t (mm) | BK7 1¢ Parallelism |
BK7 10 ² Parallelism |
Fused Silica 1¢ Parallelism |
Fused Silica 10² Parallelism |
| Part No. | Part No. | Part No. | Part No. | ||
| 10.0 | 6.0 | WNH0201 | WNH0211 | WNH1201 | WNH1211 |
| 12.7 | 6.0 | WNH0202 | WNH0212 | WNH1202 | WNH1212 |
| 25.0 | 6.0 | WNH0203 | WNH0213 | WNH1203 | WNH1213 |
| 25.4 | 6.35 | WNH0204 | WNH0214 | WNH1204 | WNH1214 |
| 30.0 | 6.0 | WNH0205 | WNH0215 | WNH1205 | WNH1215 |
| 50.0 | 10.0 | WNH0306 | WNH0316 | WNH1306 | WNH1316 |
Wavefront Distortion: l per 25 mm. Parallelism: 1¢ . Surface quality: 60/40 scratch and dig |
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| f (mm) | t (mm) | BK7 | UV Grade Fused Silica |
| Part No. | Part No. | ||
| 10.0 | 3.0 | WNL0101 | WNL1101 |
| 12.7 | 3.0 | WNL0102 | WNL1102 |
| 25.0 | 3.0 | WNL0103 | WNL1103 |
| 25.4 | 3.0 | WNL0104 | WNL1104 |
| 30.0 | 3.0 | WNL0105 | WNL1105 |
| 50.0 | 3.0 | WNL0106 | WNL1106 |
Sapphire Windows
Specifications:
Material: Anisotropic synthetic sapphire crystal (Al203), random
orientation
Diameter: 0.0, -0.1 mm
Thickness: ± 0.2 mm
Parallelism: 3 arc minutes
Flatness: l per 25 mm at 633 nm over 90% of aperture
Surface quality: 80/50 scratch and dig.
Both edges are bevelled
| f (mm) | t (mm) | Part No. |
| 8.0 | 0.5 | WIN3001 |
| 8.0 | 0.9 | WIN3002 |
| 12.0 | 1.0 | WIN3003 |
| 20.0 | 2.0 | WIN3007 |
| 25.0 | 1.0 | WIN3004 |
| 25.0 | 2.0 | WIN3008 |
| 25.4 | 3.0 | WIN3009 |
| 25.4 | 5.0 | WIN3010 |
| 30.0 | 1.2 | WIN3005 |
| 30.0 | 2.0 | WIN3006 |
Calcium Fluoride (CaF2) Windows
Specifications:
Material: Calcium Fluoride single crystal
Transparent range: 0.13 – 10 m m
Diameter: +0.0, -0.1 mm
Thickness: ± 0.2 mm
Parallelism: 1 arc minute
Flatness: l /2 at 632.8 nm
Surface quality: 80/50 scratch and dig
Bevel: 0.25 mm x 45°
| f (mm) | t (mm) | Part No. |
| 12.7 | 2.0 | WIN4101 |
| 25.4 | 3.0 | WIN4201 |
| 38.0 | 5.0 | WIN4301 |
| 50.0 | 3.0 | WIN4402 |
| 50.0 | 8.0 | WIN4401 |
| 76.2 | 10.0 | WIN4501 |
BK7 and Fused Silica Wedges
Specifications:
Design Wavelength:
632.8 nm (BK7)
308 nm (UV Fused Silica)
Material:
BK7 grade A optical glass
(n=1.51467 at 632.8 nm)
UV fused silica
(n=1.48575 at 308 nm)
Surface quality: 60/40 scratch and dig
Wedge angle: ± 1 minute
Flatness: l /4 at 632.8 nm
Diameter: +0.0, -0.1 mm
Thickness: ± 0.2 mm
Bevel: 0.25 mm x 45°
| f (mm) | b (degrees) | BK7 | UV Fused Silica | ||
| a | Part No. | a | Part No. | ||
| 25.4 | 1 | 1° 57¢ | WED0101 | 2° 4¢ | WED1101 |
| 25.4 | 2 | 3° 53¢ | WED0201 | 4° 7¢ | WED1201 |
| 25.4 | 4 | 7° 46¢ | WED0301 | 8° 14¢ | WED1301 |
| 25.4 | 6 | 11° 39¢ | WED0401 | 12° 21¢ | WED1401 |