Aspheres are elements of rotational symmetry with a profile that deviates from that of a circle. Using aspheres in an optical system provides the optical designer with additional degrees of freedom to create a system with lower optical aberrations.
Criterion | Standard | Custom |
---|---|---|
Diameter [mm] | 10-120 | 5-200 |
Dia. Tolerance [mm] | ±0.1 | ±0.02 |
Irregularity (RMS) [nm] | 50 | 20 |
Scratch/Dig | 60-40 | 20-10 |
CT. Tolerance [mm] | ±0.1 | ±0.02 |
Surface Roughness Rq [nm] | <5nm | <5nm |
Standard [1-120] Custom [5-200]
Standard [±0.1] Custom [±0.02]
Standard [200] Custom [100]
Standard [60-40] Custom [20-10]
Standard [±0.2] Custom [±0.05]
Custom [<7.5nm]
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