Spherical Lenses

BK7 Plano-Concave Lenses

Plano-Concave Lens has a negative focal length, and is useful for expanding light or increasing focal length in optics systems. Metal housing, standard and broadband antireflection coatings are available upon request, see our standard optics components below.

plano-concave-lens.jpg

Specifications

Parameter Precision Standard
Diameter Tolerance: +0/-0.05mm +0/-0.1mm
Center Thickness Tolerance: +/-0.05mm +/-0.1mm
Focal Length Tolerance: +/-1% +/-1%
Surface Figure at 632.8 nm(over 90% diameter): λ /8 λ /4
Centration: < 2 arc min . < 3 arc min
Surface Quality: 20-10 40-20
Clear Aperture: > 90% > 90%
Coating: custom Custom

BK7 Plano-Concave Lenses

Diameter Focal Length Material Center Thickness Edge Thickness Part No.
Φ(mm) f (mm) name Tc(mm) Te(mm) Precision Standard
6.00 -12.00 BK7 2.23 3.00 KPWP 001 KPWS 001
6.00 -18.00 BK7 2.50 3.00 KPWP 002 KPWS 002
6.00 -24.00 BK7 2.63 3.00 KPWP 003 KPWS 003
6.35 -6.35 BK7 1.00 3.00 KPWP 004 KPWS 004
6.35 -12.70 BK7 2.18 3.00 KPWP 005 KPWS 005
6.35 -25.40 BK7 2.61 3.00 KPWP 006 KPWS 006
10.00 -20.00 BK7 1.71 3.00 KPWP 007 KPWS 007
10.00 -50.00 BK7 2.51 3.00 KPWP 008 KPWS 008
12.70 -19.05 BK7 1.68 4.00 KPWP 009 KPWS 009
12.70 -25.40 BK7 1.36 3.00 KPWP 010 KPWS 010
12.70 -30.00 BK7 1.63 3.00 KPWP 011 KPWS 011
12.70 -38.10 BK7 1.95 3.00 KPWP 012 KPWS 012
12.70 -50.00 BK7 2.21 3.00 KPWP 013 KPWS 013
12.70 -75.00 BK7 2.48 3.00 KPWP 014 KPWS 014
12.70 -100.00 BK7 2.61 3.00 KPWP 015 KPWS 015
12.70 -300.00 BK7 2.87 3.00 KPWP 016 KPWS 016
20.00 -30.00 BK7 1.84 5.50 KPWP 017 KPWS 017
20.00 -40.00 BK7 1.42 4.00 KPWP 018 KPWS 018
20.00 -50.00 BK7 1.99 4.00 KPWP 019 KPWS 019
20.00 -75.00 BK7 2.69 4.00 KPWP 020 KPWS 020
20.00 -100.00 BK7 3.02 4.00 KPWP 021 KPWS 021
20.00 -125.00 BK7 3.22 4.00 KPWP 022 KPWS 022
20.00 -150.00 BK7 3.35 4.00 KPWP 023 KPWS 023
20.00 -200.00 BK7 3.52 4.00 KPWP 024 KPWS 024
20.00 -250.00 BK7 3.61 4.00 KPWP 025 KPWS 025
20.00 -500.00 BK7 3.81 4.00 KPWP 026 KPWS 026
20.00 -1741.49 BK7 3.94 4.00 KPWP 027 KPWS 027
20.00 -1934.98 BK7 3.95 4.00 KPWP 028 KPWS 028
20.00 -2902.48 BK7 3.97 4.00 KPWP 029 KPWS 029
20.00 -3869.97 BK7 3.97 4.00 KPWP 030 KPWS 030
20.00 -5804.95 BK7 3.98 4.00 KPWP 031 KPWS 031
20.00 -9674.92 BK7 3.99 4.00 KPWP 032 KPWS 032
22.00 -40.00 BK7 1.83 5.00 KPWP 033 KPWS 033
22.00 -50.00 BK7 2.54 5.00 KPWP 034 KPWS 034
22.00 -85.00 BK7 3.60 5.00 KPWP 035 KPWS 035
22.00 -100.00 BK7 3.82 5.00 KPWP 036 KPWS 036
22.00 -150.00 BK7 4.22 5.00 KPWP 037 KPWS 037
25.00 -25.00 BK7 2.35 12.00 KPWP 038 KPWS 038
25.00 -50.00 BK7 2.78 6.00 KPWP 039 KPWS 039
25.00 -100.00 BK7 2.47 4.00 KPWP 040 KPWS 040
25.40 -38.10 BK7 2.36 7.00 KPWP 041 KPWS 041
25.40 -75.00 BK7 2.86 5.00 KPWP 042 KPWS 042
25.40 -150.00 BK7 3.95 5.00 KPWP 043 KPWS 043
25.40 -200.00 BK7 4.22 5.00 KPWP 044 KPWS 044
30.00 -50.00 BK7 2.20 7.00 KPWP 045 KPWS 045
30.00 -100.00 BK7 2.78 5.00 KPWP 046 KPWS 046
30.00 -125.00 BK7 3.23 5.00 KPWP 047 KPWS 047
30.00 -150.00 BK7 3.53 5.00 KPWP 048 KPWS 048
30.00 -200.00 BK7 3.91 5.00 KPWP 049 KPWS 049
30.00 -300.00 BK7 4.27 5.00 KPWP 050 KPWS 050
30.00 -400.00 BK7 4.46 5.00 KPWP 051 KPWS 051
30.00 -500.00 BK7 4.56 5.00 KPWP 052 KPWS 052
30.00 -1000.00 BK7 4.78 5.00 KPWP 053 KPWS 053
40.00 -50.00 BK7 3.00 12.00 KPWP 054 KPWS 054
40.00 -63.50 BK7 3.00 9.00 KPWP 055 KPWS 055
40.00 -100.00 BK7 3.00 7.00 KPWP 056 KPWS 056
40.00 -300.00 BK7 3.70 5.00 KPWP 057 KPWS 057
40.00 -500.00 BK7 4.22 5.00 KPWP 058 KPWS 058
50.80 -75.00 BK7 4.00 12.00 KPWP 059 KPWS 059
50.80 -100.00 BK7 3.33 10.00 KPWP 060 KPWS 060
50.80 -125.00 BK7 4.00 8.50 KPWP 061 KPWS 061
50.80 -150.00 BK7 4.00 8.00 KPWP 062 KPWS 062
50.80 -200.00 BK7 4.00 7.00 KPWP 063 KPWS 063
50.80 -250.00 BK7 3.48 6.00 KPWP 064 KPWS 064
50.80 -500.00 BK7 4.75 6.00 KPWP 065 KPWS 065
50.80 -600.00 BK7 4.96 6.00 KPWP 066 KPWS 066
76.20 -762.00 BK7 6.15 8.00 KPWP 067 KPWS 067
76.20 -1270.00 BK7 6.89 8.00 KPWP 068 KPWS 068