BK7 Positive

Specifications:

Material: BK7 Grade A Optical Glass
Design Wavelength: 546.1nm
Design Index: 1.5183 ±0.0005
Diameter Tolerance: +0.0, -0.15mm
Paraxial Focal Length: ±2%
Centration: 3 arc minutes
Clear Aperture: >80%
Surface Figure: 
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Surface Quality: 60-40 scratch and dig
Bevel: 0.25 mm x 45°

Part No.
f (mm)
f (mm)
R1 (mm)
R2 (mm)
tc (mm)
te (mm)
fb (mm)
MP0101
100.0
25.4
33.72
90.00
4.0
2.5
97.5
MP0102
125.0
25.4
38.47
90.00
4.0
2.8
121.8
MP0103
150.0
25.4
42.52
90.00
4.0
3.0
146.3
MP0104
175.0
25.4
46.05
90.00
4.0
3.1
171.2
MP0105
200.0
25.4
49.03
90.00
3.5
2.8
197.0
MP0106
250.0
25.4
83.96
235.00
3.5
2.9
246.5
MP0107
300.0
25.4
94.08
235.00
3.5
3.0
296.3
MP0108
350.0
25.4
102.90
235.00
3.5
3.1
346.0
MP0109
400.0
25.4
110.72
235.00
3.5
3.1
395.8
MP0110
500.0
25.4
123.90
235.00
3.5
3.2
495.4
MP0111
600.0
25.4
204.95
600.00
3.5
3.2
595.3
MP0112
800.0
25.4
245.39
600.00
3.5
3.3
794.5
MP0113
1000.0
25.4
278.34
600.00
3.5
3.3
993.7
MP0114
1500.0
25.4
339.05
600.00
3.5
3.4
1492.0
MP0115
2000.0
25.4
380.54
600.00
3.5
3.4
1990.2
MP0116
4000.0
25.4
466.12
600.00
3.5
3.5
3984.5
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