The outside dimension of lenses is betweenΦ1.0 andΦ90. Processing precision of the outside diameter is ±0.003mm. The transmission centering tolerance 0.005mm; The reflection centering tolerance 15 seconds. Sagitta height tolerance +/-0.01mm. The lens centering of concentric circle or closely can be controlled inner 1 minute. The dimension and symmetry of Particularly Shaped lens (D shape、H shape) can reach to +/-0.01mm by automatic centering machine. |