BK7 Bi-Convex Spherical Lenses
Size and coating of the lenses can be customized according to users’ needs
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Specification
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Material
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Schott BK7
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Design Wavelength
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632.8nm
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Focal Length Tolerance
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±1%
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Diameter Tolerance
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+0/-0.1mm
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Thickness Tolerance
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±0.1mm
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Surface Accuracy
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λ/4@632.8nm
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Surface Quality
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40-20
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Centration
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<3 arc min
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Clear Aperture
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>90%
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Bevelling
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<0.2×45º
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Coating
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According to customers’ requirements
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Model
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Dia(mm)
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EFL(mm)
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R1=R2(mm)
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BFL(mm)
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Tc(mm)
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Te(mm)
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01B0610
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6.00
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10.00
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9.88
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9.17
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2.40
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1.50
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01B0612
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6.00
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12.00
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11.96
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11.22
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2.30
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1.50
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01B0615
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6.00
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15.00
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15.09
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14.29
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2.10
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1.50
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01B0630
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6.00
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30.00
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30.60
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29.40
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1.80
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1.50
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01B0912
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9.00
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12.00
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11.72
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10.75
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3.60
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1.80
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01B0920
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9.00
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20.00
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20.12
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19.05
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2.80
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1.80
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01B1215
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12.70
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15.00
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14.61
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13.36
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4.70
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1.80
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01B1220
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12.70
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20.00
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19.92
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18.67
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3.90
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1.80
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01B1225
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12.70
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25.00
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25.16
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23.85
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3.40
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1.80
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01B1230
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12.70
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30.00
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30.37
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28.96
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3.10
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1.80
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Model
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Dia(mm)
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EFL(mm)
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R1=R2(mm)
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BFL(mm)
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Tc(mm)
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Te(mm)
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01B1240
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12.70
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40.00
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40.73
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39.07
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2.80
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1.80
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01B1250
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12.70
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50.00
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51.06
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49.13
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2.60
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1.80
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01B12100
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12.70
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100.00
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102.64
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99.27
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2.20
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1.80
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01B2530
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25.40
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30.00
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29.54
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27.34
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7.70
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2.00
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01B2535
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25.40
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35.00
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34.86
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32.68
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6.80
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2.20
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01B2540
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25.40
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40.00
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40.14
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37.93
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6.10
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2.00
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01B2550
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25.40
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50.00
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50.61
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48.25
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5.20
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2.00
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01B2560
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25.40
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60.00
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61.00
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58.43
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4.70
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2.00
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01B2575
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25.40
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75.00
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76.56
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73.63
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4.10
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2.00
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01B25100
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25.40
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100.00
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102.40
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98.81
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3.60
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2.00
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Model
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Dia(mm)
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EFL(mm)
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R1=R2(mm)
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BFL(mm)
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Tc(mm)
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Te(mm)
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01B25125
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25.40
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125.00
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128.21
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123.91
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3.30
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2.00
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01B25150
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25.40
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150.00
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154.00
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148.97
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3.10
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2.00
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01B25175
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25.40
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175.00
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179.79
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174.04
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2.90
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2.00
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01B25200
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25.40
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200.00
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205.56
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199.07
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2.80
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2.00
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01B25250
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25.40
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250.00
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257.10
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249.14
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2.60
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2.00
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01B25300
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25.40
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300.00
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308.63
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299.17
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2.50
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2.00
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01B25400
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25.40
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400.00
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411.66
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399.21
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2.40
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2.00
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01B25500
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25.40
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500.00
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514.70
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499.24
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2.30
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2.00
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01B25750
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25.40
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750.00
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772.26
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749.27
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2.20
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2.00
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01B251000
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25.40
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1000.00
|
1029.81
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999.27
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2.20
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2.00
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Model
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Dia(mm)
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EFL(mm)
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R1=R2(mm)
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BFL(mm)
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Tc(mm)
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Te(mm)
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01B5060
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50.80
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60.00
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59.26
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55.04
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14.40
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3.00
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01B5075
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50.80
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75.00
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75.20
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71.00
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11.80
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3.00
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01B50100
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50.80
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100.00
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101.38
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96.81
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9.50
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3.00
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01B50125
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50.80
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125.00
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127.38
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122.30
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8.10
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3.00
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01B50150
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50.80
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150.00
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153.29
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147.60
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7.20
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3.00
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01B50175
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50.80
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175.00
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179.15
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172.81
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6.60
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3.00
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01B50200
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50.80
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200.00
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204.98
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197.94
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6.20
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3.00
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01B50250
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50.80
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250.00
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256.61
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248.18
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5.50
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3.00
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01B50300
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50.80
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300.00
|
308.19
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298.31
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5.10
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3.00
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01B50400
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50.80
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400.00
|
411.29
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398.48
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4.60
|
3.00
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Model
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Dia(mm)
|
EFL(mm)
|
R1=R2(mm)
|
BFL(mm)
|
Tc(mm)
|
Te(mm)
|
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01B50500
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50.80
|
500.00
|
514.36
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498.58
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4.30
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3.00
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01B50750
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50.80
|
750.00
|
771.99
|
748.75
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3.80
|
3.00
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01B501000
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50.80
|
1000.00
|
1029.57
|
998.81
|
3.60
|
3.00
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