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BK7 Double-Convex Lenses

Specifications:

Material: BK7 Grade A optical glass
Design Wavelength: 546.1nm
Design Index: 1.5183¡À 0.0005
Diameter Tolerance: +0.0, -0.15mm
Paraxial Focal Length: ¡À2%
Centration: 3 arc minutes
Clear Aperture: >80%
Surface Figure:
l/4@632.8nm
Surface Quality: 60-40 scratch and dig
Bevel: 0.25 mm x 45¡ã

Part No.
f (mm)
f (mm)
R1=R2 (mm)
tc (mm)
te (mm)
fb (mm)
DX0101
8.0
6.0
7.70
3.2
2.0
6.9
DX0102
12.0
6.0
11.95
2.7
2.0
11.1
DX0103
18.0
6.0
18.22
2.5
2.0
17.2
DX0104
10.0
10.0
9.45
4.9
2.0
8.2
DX0105
15.0
12.7
14.66
4.9
2.0
13.3
DX0106
20.0
12.7
20.01
4.0
2.0
18.6
DX0107
25.0
12.7
25.28
3.6
2.0
23.8
DX0108
30.0
12.7
30.52
3.3
2.0
28.9
DX0109
40.0
12.7
40.95
3.0
2.0
39.0
DX0110
50.0
12.7
51.35
2.8
2.0
49.1
DX0111
75.0
12.7
77.30
2.6
2.0
74.1
DX0112
100.0
12.7
103.25
2.4
2.0
99.2
DX0113
25.4
20.0
25.265
6.1
2.0
23.3
DX0114
22.0
20.0
21.577
6.9
2.0
19.6
DX0115
20.0
21.0
19.239
8.2
2.0
17.1
DX0116
40.0
22.4
40.57
5.1
1.9
38.3
DX0117
125.0
25.0
129.132
3.2
2.0
123.9
DX0118
31.7
25.4
31.56
7.3
2.0
29.2
DX0119
35.0
25.4
35.09
6.8
2.0
32.7
DX0120
50.0
25.4
50.92
5.2
2.0
48.3
DX0121
75.0
25.4
77.04
4.1
2.0
73.6
DX0122
100.0
25.4
103.05
3.6
2.0
98.8
DX0123
125.0
25.4
129.02
3.3
2.0
123.9
DX0124
150.0
25.4
154.97
3.0
2.0
149.0
DX0125
175.0
25.4
180.91
2.9
2.0
174.0
DX0126
200.0
25.4
206.84
2.8
2.0
199.0
DX0127
250.0
25.4
258.70
2.6
2.0
249.1
DX0128
300.0
25.4
310.55
2.5
2.0
299.2
DX0129
500.0
25.4
517.91
2.3
2.0
499.2
DX0130
1000.0
25.4
1036.23
2.2
2.0
999.3
DX0131
25.4
25.4
24.712
9.0
2.0
22.2
DX0132
50.0
30.0
50.731
6.5
2.0
47.8
DX0133
500.0
30.0
518.306
2.4
2.0
499.2
DX0134
110.0
35.0
113.31
4.7
2.0
108.4
DX0135
50.0
38.0
49.97
10.5
3.0
46.4
DX0136
100.0
38.0
102.52
6.5
3.0
97.8
DX0137
150.0
38.0
154.57
5.4
3.0
148.2
DX0138
200.0
38.0
206.51
4.8
3.0
198.4
DX0139
350.0
38.0
362.13
4.0
3.0
348.7
DX0140
500.0
38.0
517.67
3.7
3.0
498.8
DX0141
700.0
38.0
725.02
3.5
3.0
698.8
DX0142
45.0
38.0
44.836
10.4
2.0
41.4
DX0143
50.8
38.1
51.063
9.3
1.9
47.6
DX0144
63.5
40.0
64.38
8.3
1.9
60.7
DX0145
100.0
50.0
102.06
9.2
3.0
96.9
DX0146
150.0
50.0
154.27
7.1
3.0
147.6
DX0147
200.0
50.0
206.28
6.0
3.0
198.0
DX0148
250.0
50.0
258.22
5.4
3.0
248.2
DX0149
400.0
50.0
413.87
4.5
3.0
398.5
DX0150
450.0
50.0
465.73
4.3
3.0
448.6
DX0151
500.0
50.0
517.58
4.2
3.0
498.6
DX0152
600.0
50.0
621.28
4.0
3.0
598.7
DX0153
800.0
50.0
828.64
3.8
3.0
798.7
DX0154
500.0
80.0
517.678
6.1
2.0
498.0
DX0155
250.0
100.0
257.0
13.7
3.9
245.4
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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