Export Markets: | North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe |
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Specifications
Positive Meniscus Lenses
1.Materials:Optical plastic glass,K9,JGS1,JGS3,MgF2,BaF2,Ge,Si,N-BK7,UV-Grade Fused Silica,CaF2,ZnSe etc..
2.EFL:±1%
3.Diameter Tolerance:+0/-0.05mm(precision),+0/-0.1mm(Standard)
4.Center Thickness Tolerance: +/-0.05mm(precision),+/-0.1mm(Standard)
5.Surface Quality: 40/20 20/10
6.Centration: ±1 arc minutes
7.Surface Figure:λ/8(precision),λ/4(Standard) at 632.8nm
8.Clear Aperture: >90% of diameter
9.Coating: Customized
10.Applications:Nd:YAG lasers,High-power laser applications,Camera,projector,etc..
Positive Meniscus Lenses is a Convex-Concave lens,of which the curvatures of Convex is higher than that of Concave.Due its steeper convex surface,the positive meniscus lens effect converging light beam.It's designed to reduce or eliminate spherical aberration and to achieve a tighter focusing light beam.