BK7 Window
BK7 Window are of high precision diemsion control, minimal transmitted beam deviation, high surface quality.With those excellent features, the BK7 window is widely use in projection optics systems, imaging and optical measurement system.
For your wide range of applications, OP-Unite can supply varieties of single layer or multiplayer anti-reflecting coating on optical windows. Please refer to Coatings chapter for more information.
High Precision BK7 Windows
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General Specifications
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Parameter
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Commercial Grade
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Substrate Material
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BK7 grade A optical glass
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Diameter Tolerance
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+0/-0.05mm
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Thickness Tolerance
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+/-0.1mm
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Clear Aperture
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>Central 85% of diameter
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Surface Quality
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10-5 S/D
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Parallelism
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Refer to the table
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Wavefront Distortion
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λ/10 per 25mm @632.8nm
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Chamfer
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0.25mm x 45°
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Coating
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Uncoated
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1' Parallelism
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10" Parallelism
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Φ (mm)
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T (mm)
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Part No.
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Part No.
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||
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WIN04001
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WIN02001
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10.0
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6.0
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WIN04002
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WIN02002
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12.7
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6.0
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WIN04003
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WIN02003
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25.0
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6.0
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WIN04004
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WIN02004
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25.4
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6.0
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WIN04005
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WIN02005
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30.0
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6.0
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WIN04006
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WIN02006
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50.0
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10.0
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Standard BK7 Windows
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General Specifications
|
|
|
Parameter
|
Commercial Grade
|
|
Substrate Material
|
BK7 grade A optical glass
|
|
Diameter Tolerance
|
+0/-0.1mm
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Thickness Tolerance
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+/-0.1mm
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Clear Aperture
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>Central 85% of diameter
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Surface Quality
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60-40 S/D
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Parallelism
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< 1 arc minute
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Wavefront Distortion
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λ/4 per 25mm @632.8nm
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Chamfer
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0.25mm x 45°
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Coating
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Uncoated
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Part No.
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Φ (mm)
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T (mm)
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WIN01001
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10.0
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3.0
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WIN01002
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12.7
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3.0
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WIN01003
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15.0
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3.0
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WIN01004
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25.0
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3.0
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WIN01005
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25.4
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3.0
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WIN01006
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30.0
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3.0
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WIN01007
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50.0
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3.0
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WIN01008
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50.8
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3.0
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YP is an OEM manufacturer, and we don have much standard products in stock. So please contact us for your custom optics. We will do strictly according to your requirements.
Note: The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from 2-360mm. The manufacturing limits are not absolute; tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.