Chinese
KL13-025-032 Plano-Concave Lenses
Diameter:25mm; focallength:-31.5mm
Delivery Time : 2-3 weeks
US$18.86
In stock
SKU
KL136
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) | 25 |
| Effective focal length EFL(mm) | -31.5 |
| Back Focus length BFL(mm) | -32.83 |
| Radius R1(mm) | -16.27 |
| Center Thickness CT(mm) | 2 |
| Edge Thickness ET(mm) | 7.86 |
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