China Glasss N-Bk7 Half-Ball Lenses 50mm, Find details about China Glass Ball Lens, Ball Lens from Glasss N-Bk7 Half-Ball Lenses 50mm
Range of diameter | Dia.0.7mm-Dia.400mm |
Range of curve radius | R1.5-R∞ etc. |
Tolerance of diameter | +/-0.1, +/-0.01, +/-0.005 etc. |
Surface accuracy | λ , 1/2λ , 1/4λ , 1/10λ etc. |
Tolerance of Thickness | +/-0.1, +/-0.05, +/-0.01 etc. |
Centration | +/-2′,+/-1′ etc. |
Aperture N | 5, 1 etc. |
Irregularity ΔN | 2, 1, 0.5, 0.2 etc. |
Surface quality | 60/40, 40/20, 20/10, 10/5 etc. |