Spherical Lenses

Equi-Radius Meniscus Lenses

A Meniscus Lens with the same radius in its convex and concave surfaces is often used in pairs as a resonance cavity. Metal housing, standard and broadband antireflection coatings are available upon request, see our standard optics components below.

meniscus-glass-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: 20′±10′ 20′±10′
Surface Quality: 20-10 40-20
Clear Aperture: > 90% > 90%
Coating: custom custom

Equi-Radius Meniscus Lenses

Diameter Focal Length Material Center Thickness Part No.
Φ(mm) f (mm) name Tc(mm) Precision Standard
20.0 5.00 BK7 1000.0 KTWPR 001 KTWSR 001
20.0 5.00 BK7 1500.0 KTWPR 002 KTWSR 002
20.0 5.00 BK7 2000.0 KTWPR 003 KTWSR 003
20.0 5.00 BK7 2500.0 KTWPR 004 KTWSR 004
20.0 5.00 BK7 3000.0 KTWPR 005 KTWSR 005
20.0 5.00 BK7 3500.0 KTWPR 006 KTWSR 006
20.0 5.00 BK7 4000.0 KTWPR 007 KTWSR 007
20.0 5.00 BK7 4500.0 KTWPR 008 KTWSR 008
20.0 5.00 BK7 5000.0 KTWPR 009 KTWSR 009
20.0 5.00 BK7 6000.0 KTWPR 010 KTWSR 010
20.0 5.00 BK7 7000.0 KTWPR 011 KTWSR 011
20.0 5.00 BK7 8000.0 KTWPR 012 KTWSR 012
20.0 5.00 BK7 9000.0 KTWPR 013 KTWSR 013
20.0 5.00 BK7 10000.0 KTWPR 014 KTWSR 014