A method for printing an ink jet marking on a non-wetting surface for liquid ink, includes forming at least a first drop of solidified ink on the surface, by ejecting, by means of a printhead, a first drop of liquid ink at a first given ejection velocity and with a first given volume, and depositing, on at least one portion of said first drop of solidified ink, at least a second drop of ink having a second volume VOL2, by ejecting, by means of a printhead, a second drop of liquid ink at an ejection velocity.

The present invention provides an actinically or thermally curable ink for making colored silicone hydrogel contact lenses. The ink of the invention comprises at least a pigment, a polymeric dispersant, a solvent and an actinically or thermally curable silicone-containing binder polymer including ethylenically unsaturated groups and segments derived from at least one silicone-containing vinylic monomer or macromere. The ink of the invention is characterized by having capability to be cured actinically or thermally to form a colored coat on a silicone hydrogel contact lens, wherein the ink is characterized by having an longer print life using a pad-printing system by at least 30% comparing to the ink which has the same composition except of no polymeric dispersant, wherein ink life is a number of printed parts that can be achieved in a print cycle.

A polarized ophthalmic lens has a polarization gradient with a primary light transmission gradient. The lens also includes a secondary light transmission gradient, the secondary light transmission gradient being complementary to the primary light transmission gradient such that the lens exhibits uniform light transmission.

A method for forming sunglass lenses with a predetermined optical gradient, namely a polarized gradient, or transmissivity gradient in which a gradient pattern is provided on an oriented sheet. The oriented sheet is incorporated into a lens to provide the lens with the associated gradient.

A dye-deposited base body manufacturing apparatus manufactures a dye-deposited base body. The dye-deposited base body is used in a dyeing step of dyeing a resin body. A dye to be transferred to the resin body is deposited to a base body. The dye-deposited base body manufacturing apparatus is provided with a printing device, a conveyance device, and a base body movement device. The printing device prints a dye for dyeing the resin body on the base body. The conveyance device conveys a dyeing tray on which the dye-deposited resin body on which the dye is printed by the printing device is placed. The base body movement device moves the dye-deposited base body from a printing position by the printing device to a side of the conveyance device.

A manufacturing method of a lens assembly includes heating the first lens and softening the first lens; and pressing the softened first lens to the second lens, bonding the first face with the second face, and hot melt connecting the first connection portion with the second connection portion. The beneficial effect of the present application is to improve the accuracy of the first laminating surface being affixed to the second laminating surface, and to improve the imaging effect of the lens assembly.

Method for manufacturing an optical lens in which coating solution curing conditions are satisfied and a coating solution is cured. The coating solution curing conditions include the angle of the axis of an optical lens substrate with respect to the horizontal direction falls within a predetermined angle range, and a second condition that the optical lens substrate rotates around the axis at a predetermined rotational speed. The predetermined angle range is between a maximum inclination angle of the axis at which the peripheral edge of a lens surface is positioned at the highest position of the lens surface, and a maximum inclination angle of the axis at which the peripheral edge of the lens surface is positioned at the lowest position of the lens surface. The predetermined rotational speed is a speed at which the coating solution applied to the lens surface is held in a coating position.

Indoor/outdoor sunglasses include a lens having gradient tinted portions that partially conceal a wearer's eye, with an untinted or minimally tinted central region that provides a relatively wide, unrestricted field of lateral vision at far and middle distances, allowing the wearer to see clearly both indoors and outdoors.

A method of color-dyeing a lens for goggles and glasses, whereby the lens includes a polycarbonate substrate, the method including the steps of: providing a liquid mixture of components including at least one dye or pigment, suitable for color-dyeing polycarbonate and a dispersion medium, whereby the at least one dye or pigment is dispersed as colloids in the dispersion medium; immersing the substrate into the mixture such that the at least one dye or pigment is impregnated into the substrate; and withdrawing the substrate from the mixture. The method is characterized in that the dispersion medium includes a solvent for dissolving the at least one dye or pigment, whereby the solvent includes at least one member selected from the group including an organic alcohol, in particular an aromatic alcohol, in particular benzylic alcohol; a butyl acetate, and a methacrylate ester, in particular methyl methacrylate.

A lens includes a light-transmitting portion and a light-shielding portion adjacent to at least a portion of the light-transmitting portion and integrated with the light-transmitting portion. The light-shielding portion includes at least one of carbon nanotubes and carbon black.