Ultra-thin windows have been used in many applications more and more. But these components are too difficulty to be manufactured because the components' thickness is too smaller than its dimension. BTMT can make the ratio of 10:1 to 40:1. The flatness of ¦Ë/4 and the transmission wavefront distortion of ¦Ë/8 is available by BTMT.
Material:
BK7A & UV Fused Silica
Surface Flatness:
¦Ë/4@632.8nm
Transmission wavefront distortion:
See table@632.8nm
Wedge:
<1 arcmin
Surface Quality:
20/10 on both side
Dimension Tolerance:
¡À0.1mm
Thickness Tolerance:
¡À0.1mm
Clear Aperture:
>90% of central diameter
Coating:
Optional
Bevel:
0.2mmx45¡ã
Product number
Dimension
Thickness
TWD
Material
TWI-25.4x25.4D1.5-B
25.4x25.4
1.5
¦Ë/4
BK7A
TWI-25.4x25.4D2.0-B
25.4x25.4
2.0
¦Ë/8
BK7A
TWI-25.4x25.4D1.5-U
25.4x25.4
1.5
¦Ë/4
UV FS
TWI-25.4x25.4D2.0-U
25.4x25.4
2.0
¦Ë/8
UV FS
TWI-25.4D1.5-B
¦Õ25.4
1.5
¦Ë/8
BK7A
TWI-25.4D2.0-B
¦Õ25.4
2.0
¦Ë/8
BK7A
TWI-25.4D1.5-U
¦Õ25.4
1.5
¦Ë/8
UV FS
TWI-25.4D2.0-U
¦Õ25.4
2.0
¦Ë/8
UV FS
TWI-50.8x50.8D1.5-B
50.8x50.8
1.5
¦Ë/4
BK7A
TWI-50.8x50.8D2.0-B
50.8x50.8
2.0
¦Ë/4
BK7A
TWI-50.8D1.5-B
¦Õ50.8
1.5
¦Ë/4
BK7A
TWI-50.8D2.0-B
¦Õ50.8
2.0
¦Ë/4
BK7A
All dimensions are in mm unless otherwise specified.
Other sizes and special shapes are available upon request.
