Wedged Substrates

WSB - WSSQ - WSSQK

Wedged Substrates
In stock
SKU
WSB - WSSQ - WSSQK
Wedged substrates can separate the reflected beam by the front and back surface of the substrates by the slight wedge angle. They can be used as a reference test plate for interferometers and beam samplers.
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Name Diameter φD Material Delivery Price Add to cart
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Wedged Substrate Synthetic Fused Silica 30mm Diameter 3 Degree Wedge λ/20
WSSQ-30C07-20-3
30mm Synthetic fused silica
6-12 weeks
£415.20
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 7mm
Surface Flatness λ/20
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 30mm Diameter 3 Degree Wedge Angle λ/20
WSB-30C07-20-3
30mm BK7
6-12 weeks
£207.60
Material BK7
Diameter φD φ30mm
Thickness t 7mm
Surface Flatness λ/20
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 0.5 Degree Wedge λ/10
WSSQ-50C08-10-0.5
50mm Synthetic fused silica
1 week
£345.70
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 0.5 Degree Wedge Angle λ/10
WSB-50C08-10-0.5
50mm BK7
6-12 weeks
£222.20
Material BK7
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 1 Degree Wedge λ/20
WSSQ-50C08-20-1
50mm Synthetic fused silica
1 week
£576.20
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 1 Degree Wedge Angle λ/20
WSB-50C08-20-1
50mm BK7
1 week
£370.40
Material BK7
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 3 Degree Wedge λ/10
WSSQ-50C10-10-3
50mm Synthetic fused silica
1 week
£403.30
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 10mm
Surface Flatness λ/10
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 3 Degree Wedge Angle λ/10
WSB-50C10-10-3
50mm BK7
6-12 weeks
£259.30
Material BK7
Diameter φD φ50mm
Thickness t 10mm
Surface Flatness λ/10
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate BK7 60mm Diameter 1 Degree Wedge Angle λ/20
WSB-60C10-20-1
60mm BK7
6-12 weeks
£493.90
Material BK7
Diameter φD φ60mm
Thickness t 10mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 60mm Diameter 1 Degree Wedge λ/20
WSSQ-60C10-20-1
60mm Synthetic fused silica
6-12 weeks
£905.40
Material Synthetic fused silica
Diameter φD φ60mm
Thickness t 10mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 100mm Diameter 1 Degree Wedge Angle λ/10
WSB-100C15-10-1
100mm BK7
6-12 weeks
£436.30
Material BK7
Diameter φD φ100mm
Thickness t 15mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 100mm Diameter 1 Degree Wedge λ/10
WSSQ-100C15-10-1
100mm Synthetic fused silica
6-12 weeks
£987.70
Material Synthetic fused silica
Diameter φD φ100mm
Thickness t 15mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate Synthetic Fused Silica 10mm Diameter 1 Degree Wedge λ/20
WSSQ-10C05-20-1
10mm Synthetic fused silica
1 week
£164.60
Material Synthetic fused silica
Diameter φD φ10mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate Synthetic Fused Silica Excimer 50mm Diameter 1 Degree Wedge λ/10
WSSQK-50C08-10-1
50mm Synthetic fused silica for excimer laser
6-12 weeks
£342.50
Material Synthetic fused silica for excimer laser
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 10mm Diameter 1 Degree Wedge Angle λ/20
WSB-10C05-20-1
10mm BK7
6-12 weeks
£82.30
Material BK7
Diameter φD φ10mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 20mm Diameter 1 Degree Wedge λ/10
WSSQ-20C05-10-1
20mm Synthetic fused silica
1 week
£98.80
Material Synthetic fused silica
Diameter φD φ20mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 20mm Diameter 1 Degree Wedge Angle λ/10
WSB-20C05-10-1
20mm BK7
1 week
£49.40
Material BK7
Diameter φD φ20mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 25mm Diameter 1 Degree Wedge λ/20
WSSQ-25C05-20-1
25mm Synthetic fused silica
6-12 weeks
£246.90
Material Synthetic fused silica
Diameter φD φ25mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 25mm Diameter 1 Degree Wedge Angle λ/20
WSB-25C05-20-1
25mm BK7
1 week
£123.50
Material BK7
Diameter φD φ25mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 30mm Diameter 1 Degree Wedge λ/10
WSSQ-30C05-10-1
30mm Synthetic fused silica
1 week
£148.20
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 30mm Diameter 1 Degree Wedge Angle λ/10
WSB-30C05-10-1
30mm BK7
1 week
£74.10
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 30mm Diameter 2 Degree Wedge λ/20
WSSQ-30C05-20-2
30mm Synthetic fused silica
1 week
£355.80
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 30mm Diameter 2 Degree Wedge Angle λ/20
WSB-30C05-20-2
30mm BK7
1 week
£177.90
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 40mm Diameter 1 Degree Wedge λ/10
WSSQ-40C06-10-1
40mm Synthetic fused silica
6-12 weeks
£222.20
Material Synthetic fused silica
Diameter φD φ40mm
Thickness t 6mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 40mm Diameter 1 Degree Wedge Angle λ/10
WSB-40C06-10-1
40mm BK7
6-12 weeks
£127.60
Material BK7
Diameter φD φ40mm
Thickness t 6mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 0.5 Degree Wedge λ/20
WSSQ-50C08-20-0.5
50mm Synthetic fused silica
1 week
£691.40
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/20
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 0.5 Degree Wedge Angle λ/20
WSB-50C08-20-0.5
50mm BK7
6-12 weeks
£444.50
Material BK7
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/20
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 2 Degree Wedge λ/10
WSSQ-50C08-10-2
50mm Synthetic fused silica
6-12 weeks
£345.70
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 2 Degree Wedge Angle λ/10
WSB-50C08-10-2
50mm BK7
6-12 weeks
£222.20
Material BK7
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 3 Degree Wedge λ/20
WSSQ-50C10-20-3
50mm Synthetic fused silica
6-12 weeks
£806.70
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 10mm
Surface Flatness λ/20
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 3 Degree Wedge Angle λ/20
WSB-50C10-20-3
50mm BK7
6-12 weeks
£518.60
Material BK7
Diameter φD φ50mm
Thickness t 10mm
Surface Flatness λ/20
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate BK7 80mm Diameter 1 Degree Wedge Angle λ/10
WSB-80C12-10-1
80mm BK7
6-12 weeks
£296.30
Material BK7
Diameter φD φ80mm
Thickness t 12mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 80mm Diameter 1 Degree Wedge λ/10
WSSQ-80C12-10-1
80mm Synthetic fused silica
1 week
£707.90
Material Synthetic fused silica
Diameter φD φ80mm
Thickness t 12mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 100mm Diameter 1 Degree Wedge Angle λ/20
WSB-100C15-20-1
100mm BK7
6-12 weeks
£872.50
Material BK7
Diameter φD φ100mm
Thickness t 15mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 100mm Diameter 1 Degree Wedge λ/20
WSSQ-100C15-20-1
100mm Synthetic fused silica
6-12 weeks
£1,975.50
Material Synthetic fused silica
Diameter φD φ100mm
Thickness t 15mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate Synthetic Fused Silica 15mm Diameter 1 Degree Wedge λ/10
WSSQ-15C05-10-1
15mm Synthetic fused silica
6-12 weeks
£90.50
Material Synthetic fused silica
Diameter φD φ15mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 15mm Diameter 1 Degree Wedge Angle λ/10
WSB-15C05-10-1
15mm BK7
6-12 weeks
£45.30
Material BK7
Diameter φD φ15mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 20mm Diameter 1 Degree Wedge λ/20
WSSQ-20C05-20-1
20mm Synthetic fused silica
1 week
£197.50
Material Synthetic fused silica
Diameter φD φ20mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 20mm Diameter 1 Degree Wedge Angle λ/20
WSB-20C05-20-1
20mm BK7
1 week
£98.80
Material BK7
Diameter φD φ20mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 30mm Diameter 0.5 Degree Wedge λ/10
WSSQ-30C05-10-0.5
30mm Synthetic fused silica
6-12 weeks
£177.90
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 30mm Diameter 0.5 Degree Wedge Angle λ/10
WSB-30C05-10-0.5
30mm BK7
6-12 weeks
£89.20
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 30mm Diameter 1 Degree Wedge λ/20
WSSQ-30C05-20-1
30mm Synthetic fused silica
1 week
£296.30
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 30mm Diameter 1 Degree Wedge Angle λ/20
WSB-30C05-20-1
30mm BK7
6-12 weeks
£148.20
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 30mm Diameter 3 Degree Wedge λ/10
WSSQ-30C07-10-3
30mm Synthetic fused silica
1 week
£207.60
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 7mm
Surface Flatness λ/10
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 30mm Diameter 3 Degree Wedge Angle λ/10
WSB-30C07-10-3
30mm BK7
6-12 weeks
£103.80
Material BK7
Diameter φD φ30mm
Thickness t 7mm
Surface Flatness λ/10
Wedge angle 3°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 40mm Diameter 1 Degree Wedge λ/20
WSSQ-40C06-20-1
40mm Synthetic fused silica
1 week
£444.50
Material Synthetic fused silica
Diameter φD φ40mm
Thickness t 6mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 40mm Diameter 1 Degree Wedge Angle λ/20
WSB-40C06-20-1
40mm BK7
6-12 weeks
£255.20
Material BK7
Diameter φD φ40mm
Thickness t 6mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 1 Degree Wedge λ/10
WSSQ-50C08-10-1
50mm Synthetic fused silica
6-12 weeks
£288.10
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 1 Degree Wedge Angle λ/10
WSB-50C08-10-1
50mm BK7
1 week
£185.20
Material BK7
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
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Wedged Substrate Synthetic Fused Silica 50mm Diameter 2 Degree Wedge λ/20
WSSQ-50C08-20-2
50mm Synthetic fused silica
6-12 weeks
£538.90
Material Synthetic fused silica
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/20
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 50mm Diameter 2 Degree Wedge Angle λ/20
WSB-50C08-20-2
50mm BK7
1 week
£444.50
Material BK7
Diameter φD φ50mm
Thickness t 8mm
Surface Flatness λ/20
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 60mm Diameter 1 Degree Wedge λ/10
WSSQ-60C10-10-1
60mm Synthetic fused silica
6-12 weeks
£452.70
Material Synthetic fused silica
Diameter φD φ60mm
Thickness t 10mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate BK7 60mm Diameter 1 Degree Wedge Angle λ/10
WSB-60C10-10-1
60mm BK7
6-12 weeks
£246.90
Material BK7
Diameter φD φ60mm
Thickness t 10mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate BK7 80mm Diameter 1 Degree Wedge Angle λ/20
WSB-80C12-20-1
80mm BK7
6-12 weeks
£592.60
Material BK7
Diameter φD φ80mm
Thickness t 12mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 80mm Diameter 1 Degree Wedge λ/20
WSSQ-80C12-20-1
80mm Synthetic fused silica
6-12 weeks
£1,415.80
Material Synthetic fused silica
Diameter φD φ80mm
Thickness t 12mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
i
Wedged Substrate Synthetic Fused Silica 10mm Diameter 1 Degree Wedge λ/10
WSSQ-10C05-10-1
10mm Synthetic fused silica
2 weeks
£82.30
Material Synthetic fused silica
Diameter φD φ10mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
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Wedged Substrate Synthetic Fused Silica Excimer 30mm Diameter 1 Degree Wedge λ/10
WSSQK-30C05-10-1
30mm Synthetic fused silica for excimer laser
6-12 weeks
£185.20
Material Synthetic fused silica for excimer laser
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
i
Wedged Substrate BK7 10mm Diameter 1 Degree Wedge Angle λ/10
WSB-10C05-10-1
10mm BK7
6-12 weeks
£41.20
Material BK7
Diameter φD φ10mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 15mm Diameter 1 Degree Wedge λ/20
WSSQ-15C05-20-1
15mm Synthetic fused silica
6-12 weeks
£181.10
Material Synthetic fused silica
Diameter φD φ15mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
i
Wedged Substrate BK7 15mm Diameter 1 Degree Wedge Angle λ/20
WSB-15C05-20-1
15mm BK7
6-12 weeks
£90.50
Material BK7
Diameter φD φ15mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 25mm Diameter 1 Degree Wedge λ/10
WSSQ-25C05-10-1
25mm Synthetic fused silica
6-12 weeks
£123.50
Material Synthetic fused silica
Diameter φD φ25mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 20−10
i
Wedged Substrate BK7 25mm Diameter 1 Degree Wedge Angle λ/10
WSB-25C05-10-1
25mm BK7
6-12 weeks
£61.70
Material BK7
Diameter φD φ25mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 1°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 30mm Diameter 0.5 Degree Wedge λ/20
WSSQ-30C05-20-0.5
30mm Synthetic fused silica
1 week
£355.80
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 20−10
i
Wedged Substrate BK7 30mm Diameter 0.5 Degree Wedge Angle λ/20
WSB-30C05-20-0.5
30mm BK7
1 week
£177.90
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/20
Wedge angle 0.5°±5′
Surface Quality (Scratch-Dig) 10−5
i
Wedged Substrate Synthetic Fused Silica 30mm Diameter 2 Degree Wedge λ/10
WSSQ-30C05-10-2
30mm Synthetic fused silica
2 weeks
£177.90
Material Synthetic fused silica
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 20−10
i
Wedged Substrate BK7 30mm Diameter 2 Degree Wedge Angle λ/10
WSB-30C05-10-2
30mm BK7
6-12 weeks
£89.20
Material BK7
Diameter φD φ30mm
Thickness t 5mm
Surface Flatness λ/10
Wedge angle 2°±5′
Surface Quality (Scratch-Dig) 10−5

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◦It can also be used as a prism to refract at a small angle. Beam deflection angle δ can be calculated refractive index n, from the wedge angle α.
δ = sin−1( n sinα) − α ≒( n − 1) α
◦In BK7, 0.52 times the angle of the wedge, and in synthetic fused silica, 0.46 times the angle of the wedge. (Visible range, normal incidence)

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