Spherical Lenses
Equi-Radius Meniscus LensesA 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.
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 |