* C.T = CENTER THICKNESS +1.0mm , -0.5 mm 
　　　* E.T = EDGE THICKNESS +1.0mm , -0.5 mm
　　　* TRUE CURVE ± 0.05 (Aspherical Radius Measured by Focovision SR-2)
　　　* SAG 40 ; measured by Coburn 40mm Gauge
　　　* DIAMETER RANGE 75 mm - 0.4 mm

　　　适用于：UV410  UV420    apply to:UV410  UV420