Dyeing Method for Plastic Lens

Abstract

A dyeing method for a plastic lens includes immersing the plastic lens in an oil bath containing a dye.

1 . A dyeing method for a plastic lens, comprising:
 immersing the plastic lens in an oil bath containing a dye.   
   
   
       2 . The dyeing method for a plastic lens according to  claim 1 , wherein the plastic lens is made of an episulfide material. 
   
   
       3 . The dyeing method for a plastic lens according to  claim 1 , wherein the plastic lens has a single layered or multilayered hard coat layer. 
   
   
       4 . The dyeing method for a plastic lens according to  claim 3 , wherein the hard coat layer contains the following (A) and (B);
 (A) a fine inorganic oxide particle, and   (B) an organosilicon compound as represented by the following formula (1),
   R 1 R 2   n SiX 1   3-n    (1) 
   (where R 1  is an organic group having a polymerizable reactive group, R 2  is a hydrocarbon group having 1 to 6 carbon atoms, X 1  is a hydrolyzable group, and n is 0 or 1).   
   
   
       5 . The dyeing method for a plastic lens according to  claim 1 , wherein the dye is a solvent dye. 
   
   
       6 . The dyeing method for a plastic lens according to  claim 1 , wherein a temperature of the oil bath is 100 degrees C. or more when the plastic lens is immersed. 
   
   
       7 . The dyeing method for a plastic lens according to  claim 1 , wherein oil used for the oil bath is silicone oil. 
   
   
       8 . The dyeing method for a plastic lens according to  claim 2 , wherein the dye is a solvent dye. 
   
   
       9 . The dyeing method for a plastic lens according to  claim 2 , wherein a temperature of the oil bath is 100 degrees C. or more when the plastic lens is immersed. 
   
   
       10 . The dyeing method for a plastic lens according to  claim 2 , wherein oil used for the oil bath is silicone oil. 
   
   
       11 . The dyeing method for a plastic lens according to  claim 3 , wherein the dye is a solvent dye. 
   
   
       12 . The dyeing method for a plastic lens according to  claim 3 , wherein a temperature of the oil bath is 100 degrees C. or more when the plastic lens is immersed. 
   
   
       13 . The dyeing method for a plastic lens according to  claim 3 , wherein oil used for the oil bath is silicone oil. 
   
   
       14 . The dyeing method for a plastic lens according to  claim 4 , wherein the dye is a solvent dye. 
   
   
       15 . The dyeing method for a plastic lens according to  claim 4 , wherein a temperature of the oil bath is 100 degrees C. or more when the plastic lens is immersed. 
   
   
       16 . The dyeing method for a plastic lens according to  claim 4 , wherein oil used for the oil bath is silicone oil.