1.56 EvoClear” Aspheric (High Index 1.557) Lens Blank Diameter: 74mm

Nominal Curve	True Curve	Radius mm	SAG at 50mm	Nominal Concave	Edge Thickness	Center Thickness
0.50	0.54	981.481	0.32	3.0	15.7	12.6
1.50	1.44	368.056	0.85	3.0	15.7	13.8
2.50	2.28	232.456	1.35	3.0	15.7	14.9
3.50	3.51	150.997	2.08	6.0	15.6	12.2
4.50	4.51	117.517	2.69	6.0	15.4	13.2
5.50	5.49	95.539	3.29	6.0	13.6	12.5
6.50	6.49	81.664	3.92	6.0	13.8	13.9
7.50	7.50	70.667	4.57	6.0	11.7	13.2
8.50	8.58	61.772	5.29	6.0	10.1	13.4
9.75	9.56	55.439	5.96	6.0	9.9	14.7