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BK7 Plano-Concave

Specifications:

Material: BK7 grade A optical glass 
Design Wavelength: 632.8 nm, 
Design Index: n=1.5147
Surface Figure: x: l/2; y: 2l
Dimension Tolerance: ±0.2mm
Paraxial Focal Length: ±2%
Centration: 3 arc minutes
Clear Aperture: >80% 
Surface Quality: 60-40 scratch and dig
Bevel: 0.25 mm x 45°
Part No.
X x Y (mm)
f (mm)
R1 (mm)
tc (mm)
te (mm)
fb (mm)
VC0101
10.0x10.0
-12.7
6.54
4.3
2.0
-14.0
VC0102
20.0x10.0
-12.7
6.54
4.3
2.0
-14.0
VC0103
10.0x10.0
-25.0
12.87
3.0
2.0
-26.3
VC0104
20.0x10.0
-25.0
12.87
3.0
2.0
-26.3
VC0105
20.0x20.0
-50.0
25.73
4.0
2.0
-51.3
VC0106
40.0x20.0
-50.0
25.73
4.0
2.0
-51.3
VC0107
20.0x20.0
-75.0
38.60
3.3
2.0
-76.3
VC0108
40.0x20.0
-75.0
38.60
3.3
2.0
-76.3
VC0109
20.0x20.0
-100.0
51.47
4.0
3.0
-102.0
VC0110
40.0x20.0
-100.0
51.47
4.0
3.0
-102.0
VC0111
20.0x20.0
-150.0
77.20
3.7
3.0
-152.0
VC0112
40.0x20.0
-150.0
77.20
3.7
3.0
-152.0
VC0113
20.0x20.0
-200.0
102.93
3.5
3.0
-202.0
VC0114
40.0x20.0
-200.0
102.93
3.5
3.0
-202.0
VC0115
20.0x20.0
-250.0
128.67
3.4
3.0
-252.0
VC0116
40.0x20.0
-250.0
128.67
3.4
3.0
-252.0
VC0117
20.0x20.0
-500.0
257.33
3.2
3.0
-502.0
VC0118
40.0x20.0
-500.0
257.33
3.2
3.0
-502.0
VC0119
20.0x20.0
-1000.0
514.66
3.1
3.0
-1002.0
VC0120
40.0x20.0
-1000.0
514.66
3.1
3.0
-1002.0
Please refer to the Material Chapter for more information about BK7 glass, UV grade fused silica, Sapphire and CaF2.
Please refer to the Glossary and Technology for more information about lenses.
Please refer to Coating Chapter for more infomation of coating.
Other sizes and coatings are available upon request.
lPlease refer to Ring Mount for Lenses

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