BK7 Plano-Concave 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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R(mm)
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BFL(mm)
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Tc(mm)
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Te(mm)
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01C0618
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6.00
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-18
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-9.27
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-19.32
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2.00
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2.50
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01C0624
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6.00
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-24
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-12.36
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-25.32
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2.00
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2.40
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01C0927
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9.00
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-27
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-13.91
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-28.32
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2.00
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2.70
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01C1225
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12.70
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-25
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-12.88
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-26.98
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3.00
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4.70
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01C1230
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12.70
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-30
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-15.45
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-31.98
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3.00
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4.40
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01C1250
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12.70
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-50
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-25.75
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-52.31
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3.50
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4.30
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01C2550
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25.00
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-50
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-25.75
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-52.31
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3.50
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6.70
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01C2575
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25.00
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-75
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-38.63
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-77.31
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3.50
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5.60
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01C25100
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25.00
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-100
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-51.51
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-102.64
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4.00
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5.50
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01C25450
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25.40
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-50
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-25.75
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-52.31
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3.50
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6.90
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01C25475
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25.40
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-75
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-38.63
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-77.31
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3.50
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5.60
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01C254100
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25.40
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-100
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-51.51
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-102.64
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4.00
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5.60
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01C5075
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50.80
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-75
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-38.63
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-77.31
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3.50
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13.00
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01C50100
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50.80
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-100
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-51.51
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-102.64
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4.00
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10.70
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01C50150
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50.80
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-150
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-77.26
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-152.64
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4.00
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8.30
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