| abstract |
A method for making a colorant film includes following steps of mixing a hydrophilic monomer, a vinyl monomer including catechol groups, a cross-linking agent, and an initiator to form a mixture; adding an active pigment and a solvent into the mixture to form a colorant material; printing the colorant material into a mold; and heating or irradiating the colorant material in the mold by ultraviolet light to make the hydrophilic monomer, vinyl monomer with catechol groups, the initiator, and the cross-linking agent to copolymerize. The disclosure also provides a colorant film, and an ophthalmic lens. |