Patent classifications
B29D11/00451
Optical article and method of forming
A method of forming an optical article includes the step of applying a silicone composition to a surface, wherein the silicone composition is a solid and has a glass transition temperature greater than room temperature. The silicone composition is heated to a temperature at or above the glass transition temperature such that the silicone composition flows. The silicone composition forms a light transmitting sheet upon cooling following the heating.
METHOD FOR MANUFACTURING OPTICAL ELEMENT
A method for manufacturing an optical element includes heating an optical material up to a first temperature that is higher than a transition point, pressurizing the optical material using a first mold and a second mold that are situated opposite to each other across the optical material, first cooling the optical material down to a second temperature that is higher than a strain point and lower than the first temperature while pressurizing the optical material with a predetermined load using the first mold and the second mold, releasing the predetermined load at a set speed that is higher than or equal to a speed obtained in advance, at which an elastic deformation occurs preferentially over a viscous deformation in the optical material upon releasing a load, and second cooling the optical material down to a third temperature that is lower than the second temperature.
Ophthalmic lenses for reducing myopic progression and methods of making the same
A method includes providing an ophthalmic lens having a prescribed optical power, the ophthalmic lens having a surface having a base curvature corresponding to the prescribed optical power, and exposing a material at the surface to laser radiation sufficient to locally reshape the material to form a plurality of lenslets on the surface. The lenslets each have a corresponding optical power that differs from the prescribed optical power of the ophthalmic lens.
OPHTHALMIC LENSES FOR REDUCING MYOPIC PROGRESSION AND METHODS OF MAKING THE SAME
A method includes providing an ophthalmic lens having a prescribed optical power, the ophthalmic lens having a surface having a base curvature corresponding to the prescribed optical power, and exposing a material at the surface to laser radiation sufficient to locally reshape the material to form a plurality of lenslets on the surface. The lenslets each have a corresponding optical power that differs from the prescribed optical power of the ophthalmic lens.
Three-dimensionally printed lens elements
A three-dimensional printing kit for forming lens elements can include a build material including from about 80 wt % to 100 wt % thermoplastic polyamide elastomeric particles having a D50 particle size from about 10 m to about 150 m, and a fusing agent including a liquid vehicle and from about 0.5 wt % to about 20 wt % of a UV radiation absorber.