Chinese
KL13-020-050 Plano-Concave Lenses
Diameter:20mm; focallength:-50mm
Delivery Time : 2-3 weeks
US$16.88
In stock
SKU
KL134
Material:K9 Precision Annealedoptical glass
Design Wavelength:587.6nm
Diameter Tolerance:+0.0/-0.1mm
Center Thickness Tolerance:±0.2mm
Surace Figure:λ/4 @632.8nm
focallength Tolerance:±2%
Centering Tolerance:3 arc minutes
Surface Quality:3~4 level
Bevel:0.2mmX45°
Coatings:Please see the coating list
| Drawing |  |
|---|---|
| Diameter Dia(mm) | 20 |
| Effective focal length EFL(mm) | -50 |
| Back Focus length BFL(mm) | -51.38 |
| Radius R1(mm) | -25.84 |
| Center Thickness CT(mm) | 2.1 |
| Edge Thickness ET(mm) | 4.11 |
Write Your Own Review