Negative Achromatic Lenses D=25.00mm F=-75.00mm VIS N-BAK4/SF5
Product No. 145268
Stock Please Consult
Express DHL, Fedex etc.
- Dia 25.00mm
- EFL -75.00mm
- Coating AR@400~700nm
- Material N-BAK4/SF5
- BFL -78.80mm
- R1 -39.00mm
- R2 39.20mm
- R3 489.80mm
- CT 6.30mm
- CT1 2.00mm
- CT2 4.30mm
- ET 8.60mm
- Available Mount Ring 500020
- Design Wavelength --
- Diameter Tolerance +0.0/-0.1
- Center Thickness Tolerance ±0.2
- Surface Accuracy λ/4 @632.8nm
- Focal Length Tolerance ±2%
- Centering Tolerance 3~5arcmin
- Surface Quality 40-20~60-40
- Bevel 0.2X45°
- n --