(1) only the largest wounds: L = = 1/4 * D.

(2) also has the largest scars and smaller wounds: L '= sigma (W/N) [L] = 1/2 * * D.

(3) only a small scar: l '= sigma [(W/N) * l] is less than or equal to D allows that l' = total length of scar conversion w = scar width n = requirements scar specifications L = the scar length. The surface of the lens straight mirror

(4): EX.1 specifications for 80/50, lens diameter 40mm lens, the lens surface inspection, found scars are as follows: No. 80 8mm L =8mm 'scar is less than or equal to 1/4 * 40=10mm=, EX.2: Specifications for acceptance check lens lens surface 80/50 lens diameter 8.2mm, found as follows: 80 8mm scar scar, 60 scar 4mm, 40 scars 6mm L' = (80/80) * 8 + (60/80) * 4 + (40/80) x 6=14mm = [1/2] = > x 40=20mm acceptance EX.3: Specifications for the 80/50, the lens diameter of 40mm lens, the lens surface inspection, found as follows: 60 8mm scar scar, No. 40 6mm 20 8mm scar scar, L = (60/80) * 8 + (40/80) * 6 + (20/80) x 8=10mm = 40mm = L = > acceptance "(60/80) * 8 + (40/80) * 6 + (20/80) x 8=10mm = 40mm = >.

(5) the standard of the reflecting film after coating is determined according to the specification of the scar / bright spot of the drawing.