Plano-Concave lens is a divergent lens with one plane surface and one concave surface. It’s mostly used to diverge a collimated beam. Due to its negative spherical aberration, it can be used to balance the aberration of the other lenses.
Specifications
Material
BK7
Diameter tolerance
±0.1mm
Design wavelength
546.1nm, n=1.5187
Focal tolerance
±2%
Centration
3 arcmin
Surface quality
60-40 S/D
Surface flatness
l/4@632.8nm
Clear aperture
>90%
Bevel
Protective bevel
Item#
f(mm)
F(mm)
R(mm)
Tc(mm)
Te(mm)
Fb(mm)
LP11-06-6
6.0
-6.0
-3.11
1.5
3.80
-6.97
LP11-06-12
-12.0
-6.22
2.0
2.77
-13.31
LP11-06-18
-18.0
-9.33
2.50
-19.31
LP11-06-24
-24.0
-12.44
2.37
-25.31
LP11-12-15
12.7
-15.0
-7.79
5.27
-16.35
LP11-12-20
-20.0
-10.37
4.17
-21.32
LP11-12-25
-25.0
-12.97
3.70
-26.33
LP11-12-30
-30.0
-15.56
3.40
-31.31
LP11-12-40
-40.0
-20.75
3.00
-41.32
LP11-12-50
-50.0
-25.94
2.79
-51.33
LP11-12-75
-75.0
-38.90
2.52
-76.31
LP11-12-100
-100.0
-51.88
2.39
-101.33
LP11-18-35
18.0
-35.0
-18.14
4.29
-36.31
LP11-18-50
-25.92
3.61
-51.32
LP11-18-75
-38.87
3.05
LP11-18-100
-77.75
-151.33
LP11-25-35
25.4
-18.15
7.18
-36.32
LP11-25-50
5.32
LP11-25-75
4.13
LP11-25-100
3.58
LP11-25-125
-125.0
-64.96
3.26
-126.36
LP11-25-150
-150.0
-77.80
3.04
-151.30
LP11-25-175
-175.0
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