Spherical Lenses

BK7 & SF8 Positive Meniscus Lenses

Positive Meniscus Lens consists of a convex and a concave surface. It provides correction of the spherical aberration to reduce overall spot size. It will shorten the focal length of the assembly if a meniscus lens works with the other components , and without significantly increasing the axial aberration. Metal housing, standard and broadband antireflection coatings are available upon request, see our standard optics components below.

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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 Positive Meniscus Lenses

Diameter Focal Length Material Center Thickness Edge Thickness Part No.
Φ(mm) F (mm) name Tc(mm) Te(mm) Precision Standard
25.40 50.00 BK7 5.40 1.50 KTWPZ 001 KTWSZ 001
25.40 100.00 BK7 4.00 2.50 KTWPZ 002 KTWSZ 002
25.40 125.00 BK7 4.00 2.80 KTWPZ 003 KTWSZ 003
25.40 150.00 BK7 4.00 3.00 KTWPZ 004 KTWSZ 004
25.40 200.00 BK7 3.50 2.80 KTWPZ 005 KTWSZ 005
25.40 250.00 BK7 3.50 2.90 KTWPZ 006 KTWSZ 006
25.40 300.00 BK7 3.50 3.00 KTWPZ 007 KTWSZ 007
25.40 350.00 BK7 3.50 3.10 KTWPZ 008 KTWSZ 008
25.40 400.00 BK7 3.50 3.10 KTWPZ 009 KTWSZ 009
25.40 500.00 BK7 3.50 3.20 KTWPZ 010 KTWSZ 010
25.40 600.00 BK7 3.50 3.20 KTWPZ 011 KTWSZ 011
25.40 800.00 BK7 3.50 3.30 KTWPZ 012 KTWSZ 012
25.40 1000.00 BK7 3.50 3.30 KTWPZ 013 KTWSZ 013
25.40 1500.00 BK7 3.50 3.40 KTWPZ 014 KTWSZ 014
25.40 2000.00 BK7 3.50 3.40 KTWPZ 015 KTWSZ 015
25.40 4000.00 BK7 3.50 3.50 KTWPZ 016 KTWSZ 016
50.80 100.00 BK7 10.30 2.80 KTWPZ 017 KTWSZ 017
50.80 125.00 BK7 8.00 2.30 KTWPZ 018 KTWSZ 018
50.80 150.00 BK7 7.00 2.40 KTWPZ 019 KTWSZ 019
50.80 175.00 BK7 7.00 3.20 KTWPZ 020 KTWSZ 020
50.80 200.00 BK7 6.50 3.20 KTWPZ 021 KTWSZ 021
50.80 250.00 BK7 4.80 2.30 KTWPZ 022 KTWSZ 022
50.80 300.00 BK7 4.80 2.70 KTWPZ 023 KTWSZ 023
50.80 350.00 BK7 4.50 2.80 KTWPZ 024 KTWSZ 024
50.80 400.00 BK7 4.50 3.00 KTWPZ 025 KTWSZ 025
50.80 500.00 BK7 4.50 3.30 KTWPZ 026 KTWSZ 026
50.80 600.00 BK7 4.50 3.00 KTWPZ 027 KTWSZ 027
50.80 800.00 BK7 4.50 3.20 KTWPZ 028 KTWSZ 028
50.80 1000.00 BK7 4.50 3.40 KTWPZ 029 KTWSZ 029
50.80 1500.00 BK7 4.50 3.60 KTWPZ 030 KTWSZ 030
50.80 2000.00 BK7 4.50 3.70 KTWPZ 031 KTWSZ 031
50.80 4000.00 BK7 4.50 3.90 KTWPZ 032 KTWSZ 032

SF8 Positive Meniscus Lenses

Diameter Focal Length Material Center Thickness Edge Thickness Part No.
Φ(mm) f (mm) name Tc(mm) Te(mm) Standard
18.00 116.20 SF8 4.00 3.50 STWSZ 002
19.00 130.20 SF8 4.00 3.70 STWSZ 003
19.00 214.60 SF8 4.00 5.70 STWSZ 004
31.50 148.61 SF8 6.00 5.00 STWSZ 005
31.50 233.60 SF8 6.00 5.20 STWSZ 006
31.50 362.80 SF8 6.00 5.50 STWSZ 007
40.00 175.20 SF8 7.00 5.50 STWSZ 008
40.00 290.70 SF8 7.00 6.10 STWSZ 009
40.00 507.80 SF8 7.00 6.50 STWSZ 010