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Negative Achromatic Lens
Specifications:
Material ...........................................................................BK7
Design Wavelength .......................480.0nm, 546.1nm, 634.8nm
Diameter Tolerance ...........................................+0.0/-0.15mm
Paraxial Focal Length .............±2%(f<400mm);±5%(f>=400mm)
Centration .......................................................<3 arc minutes
Clear Aperture ..............................................................>90%
Surface Quality ..............................................................60-40
Bevel.......................................................................Protective
Material ...........................................................................BK7
Design Wavelength .......................480.0nm, 546.1nm, 634.8nm
Diameter Tolerance ...........................................+0.0/-0.15mm
Paraxial Focal Length .............±2%(f<400mm);±5%(f>=400mm)
Centration .......................................................<3 arc minutes
Clear Aperture ..............................................................>90%
Surface Quality ..............................................................60-40
Bevel.......................................................................Protective
| P/N | f | Φ | tc1 | tc2 | fb | Lens A | Lens B |
|---|---|---|---|---|---|---|---|
| 30801 | -25.00 | 12.70 | 3.00 | 2.67 | -27.50 | BK7 | F2 |
| 30802 | -40.00 | 12.70 | 3.00 | 2.34 | -42.50 | BK7 | F2 |
| 30803 | -50 | 25.4 | 3.00 | 4.22 | -53.3 | BK7 | F2 |
●Unit:mm
●Other sizes and coatings are available upon request.
●Other sizes and coatings are available upon request.
