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BK7 Window and Wedge
BK7 and N-BK7( a RoHS-compliant form of BK7) are high quality optical glass commonly used for windows, lenses, and prisms where transmission in the range 0.4µm to 1.8µm is desired. It is used for thermally non-critical applications. It has excellent mechanical and optical properties.
Applications:
- Precision Laser Window
- Mirror Substrate
- Brewster Window
- Round Wedge Prism
Specifications of BK7 Window and Wedge
Diameter Tolerance: +0.0/-0.1 mm
Thickness Tolerance: +0.0/-0.2mm
Surface Quality: 10-5
Clear Aperture: 90% of diameter
Bevel: 0.25mm @45°
Flatness: <λ/10
Parallelism: <10"
Wedge: 30', 1°, 2°, 4°, 8°, 12°+/-10'
Coating: Available upon request
Thickness Tolerance: +0.0/-0.2mm
Surface Quality: 10-5
Clear Aperture: 90% of diameter
Bevel: 0.25mm @45°
Flatness: <λ/10
Parallelism: <10"
Wedge: 30', 1°, 2°, 4°, 8°, 12°+/-10'
Coating: Available upon request