Contact lens and manufacturing method thereof

A contact lens, comprising:

• a lens body;
• and
• a color ink layer embedded in the lens body and comprising a plurality of color ink membrane thicknesses, the color ink membrane thicknesses being different from each other,
• wherein the color ink layer comprises a plurality of color ink elements, and the color ink elements include M types of areas, wherein the areas are defined as areas of cross sections of the color ink elements on an X-Y plane, wherein M is a natural number greater than one,
• wherein the color ink membrane thicknesses of the color ink layer comprise a first color ink membrane thickness to a (1+n)-th color ink membrane thickness, wherein n is a natural number greater than zero,
• wherein the color ink layer comprises a first sublayer and a second sublayer, the first sublayer has a first color, and the second sublayer has a second color,
• wherein the first sublayer has a plurality of first color ink membrane thicknesses, the second sublayer at least has a second color ink membrane thickness, and the color ink layer at least has a third color ink membrane thickness where the first sublayer and the second sublayer overlap,
• wherein the color ink membrane thicknesses and the M types of areas form M*(1+n) unit color ink concentrations, and the M*(1+n) unit color ink concentrations form a multicolor pattern in the lens body,
• wherein one of the color ink elements is formed by a first color ink superimposed with a second color ink,
• wherein a width of one of the color ink elements of the first sublayer and a width of one of the color ink elements of the second sublayer superimposed with the one of the color ink elements of the first sublayer remain constant along a thickness direction of the lens body.