Spherical plano concave lenses of BK7 are mostly used for monochromatic lights, such as laser beams or Fraunhofer lines.
These lenses are useful when parallel beams are converged or lights from point sources are converted to parallel beams, namely at infinite conjugate ratios.
Non-coated and AR coated products are available.
| Standard Specifications: | |
Optical Material:
Diameter Tolerance:
Design Wavelength:
Design Index:
Paraxial Focal Length:
Centration:
Clear Aperture:
Surface Quality:
Wavefront Distortion:
Bevel:
Coating: | BK7 Grade A Optical Glass
+0.0, -0.1mm
546.10nm
1.5183±0.0005
±2%
3 arc minutes
>85%
60-40 scratch and dig
lambda/4 at 632.8nm
<0.25mm X 45°
available upon request |
Standard Glass BK7 Plano-Concave Lenses:Dia(mm) | f(mm) | R1(mm) | te(mm) | tc(mm) | Fb(mm) | Product Number | 4.0 | -6.0 | 3.101 | 1.50 | 0.77 | -5.0 | ICC-PLCAB0001 | 5.0 | -10 | 5.17 | 1.64 | 1.0 | -8.91 | ICC-PLCAB0002 | 6.0 | -8.0 | 4.15 | 3.3 | 2.0 | -5.8 | ICC-PLCAB0004 | 6.0 | -10.0 | 5.18 | 3.0 | 2.0 | --8.0 | ICC-PLCAB0005 | 6.0 | -12.0 | 6.22 | 2.8 | 2.0 | 10.2 | ICC-PLCAB0006 | 6.0 | -18.0 | 9.33 | 2.5 | 2.0 | -16.4 | ICC-PLCAB0007 | 8.0 | -10.0 | 5.18 | 3.1 | 2.0 | -8.0 | ICC-PLCAB0008 | 8.0 | -18.0 | 9.33 | 2.9 | 2.0 | -16.1 | ICC-PLCAB0009 | 7.5 | -13.0 | 6.743 | 2.0 | 0.86 | -11.7 | ICC-PLCAB0010 | 10.0 | -15.0 | 7.78 | 3.8 | 2.0 | -12.5 | ICC-PLCAB0011 | 10.0 | -22.0 | 11.40 | 3.1 | 1.9 | -20.0 | ICC-PLCAB0012 | 12.7 | -15.0 | 7.78 | 5.3 | 2.0 | -11.5 | ICC-PLCAB0013 | 12.7 | -20.0 | 10.37 | 4.2 | 2.0 | -17.2 | ICC-PLCAB0014 | 12.7 | -25.0 | 12.96 | 3.7 | 2.0 | -22.6 | ICC-PLCAB0015 | 12.7 | -30.0 | 15.55 | 3.4 | 2.0 | -27.8 | ICC-PLCAB0016 | 12.7 | -40.0 | 20.73 | 3.0 | 2.0 | -38.0 | ICC-PLCAB0017 | 12.7 | -50.0 | 25.92 | 2.8 | 2.0 | -48.2 | ICC-PLCAB0018 | 12.7 | -75.0 | 38.87 | 2.5 | 2.0 | -73.4 | ICC-PLCAB0019 | 12.7 | -100.0 | 51.83 | 2.4 | 2.0 | -98.4 | ICC-PLCAB0020 | 14.0 | -25.0 | 12.968 | 4.0 | 1.90 | -22.4 | ICC-PLCAB0021 | 17.0 | -34.0 | 17.637 | 4.20 | 2.00 | -31.2 | ICC-PLCAB0022 | 18.5 | -30.0 | 15.562 | 5.0 | 2.00 | -26.7 | ICC-PLCAB0023 | 20.0 | -40.0 | 20.73 | 4.5 | 1.9 | -37.0 | ICC-PLCAB0024 | 20.0 | -35.0 | 18.155 | 4.20 | 1.20 | -32.2 | ICC-PLCAB0025 | 20.0 | -50.0 | 25.936 | 4.00 | 2.00 | --47.4 | ICC-PLCAB0026 | 22.0 | -34.0 | 17.637 | 5.80 | 1.90 | 30.2 | ICC-PLCAB0027 | 22.4 | -40.0 | 20.73 | 5.3 | 2.0 | -36.5 | ICC-PLCAB0028 | 22.4 | -50.0 | 25.92 | 4.6 | 2.0 | --47.0 | ICC-PLCAB0029 | 22.4 | -60.0 | 31.10 | 4.1 | 2.0 | 57.3 | ICC-PLCAB0030 | 22.4 | -100.0 | 51.83 | 3.2 | 2.0 | -97.9 | ICC-PLCAB0031 | 22.4 | -75 | 38.905 | 3.50 | 1.85 | -72.7 | ICC-PLCAB0032 | 22.4 | -70 | 36.309 | 3.83 | 2.05 | -67.5 | ICC-PLCAB0033 | 25.0 | -700.0 | 363.105 | 2.20 | 2.00 | -689.6 | ICC-PLCAB0034 | 25.4 | -25.4 | 13.17 | 11.7 | 2.0 | -17.7 | ICC-PLCAB0035 | 25.4 | -35.0 | 18.14 | 7.2 | 2.0 | -30.3 | ICC-PLCAB0036 | 50.0 | -25.4 | 25.92 | 5.3 | 2.0 | -46.5 | ICC-PLCAB0037 | 60.0 | -25.4 | 31.10 | 4.7 | 2.0 | -56.9 | ICC-PLCAB0038 | 70.0 | -25.4 | 36.28 | 4.3 | 2.0 | -67.2 | ICC-PLCAB0039 | 75.0 | -25.4 | 38.87 | 4.1 | 2.0 | -72.3 | ICC-PLCAB0040 |
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| Please Contact us for other dimensions in prototype and production quantities. |
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