Lens and pattern printing and coating method for manufactuirng same

A pattern printing and coating method for manufacturing the lens, comprising the following steps of:

• step 1:
• pretreatment of lenses (1), wherein outer surfaces (2) and inner surfaces (3) of the lenses are examined;
• and dust, fingerprints and dirt must be removed from the lenses (1) besides finding out defective lenses (1), so as to avoid the defects of light leakage and ink leakage after printing;
• step 2:
• printing of resin ink (4), wherein pattern outlines are set by printing the resin ink (4) on the outer surfaces (2) of the lenses through a transfer printing machine or a screen printer;
• step 3:
• examination and repair of the resin ink (4) printed, wherein whether the resin ink (4) has the defects of missing print, ink leakage, unclear border lines, uneven edges and ghosting is examined, and the defects are properly repaired and cleaned by a repair tool;
• step 4:
• coating at areas, outside the pattern outlines, of the outer surfaces (2) of the lenses, wherein argon gas layers (5), high refractive index layers (6), low refractive index layers (7) and waterproof layers (8) are evaporated at the areas, outside the pattern outlines of the outer surfaces (2) of the lenses from inside to outside in turn in a vacuum coating machine;
• and
• step 5:
• ultrasonic cleaning, wherein the lens (1) is subjected to ultrasonic cleaning in filtered and clean cold water first and then cleaned in hot water to remove the resin ink (4) on the outer surface (2).