There is provided a stretched laminate having superior optical characteristics, easily separable from a base film, and usable for manufacturing a thin polarizer. In addition, there are provided a method of manufacturing a thin polarizer having superior optical characteristics by using the stretched laminate, a thin polarizer manufactured by the method, and a polarizing plate including the thin polarizer.

A method for manufacturing an ophthalmic lens includes: providing a first precursor and a mold, putting the first precursor in a female die of the mold, exposing the first precursor to ultraviolet radiation, thereby receiving a first gel matrix; the first gel matrix comprising an iris region; providing a colored ink layer, forming the colored ink layer on the iris region, exposing the colored ink layer to ultraviolet radiation to receive a colored film; providing a second precursor and forms the second precursor on the color layer, covering a male die of the mold on the second precursor, exposing the mold to ultraviolet radiation to receive a second gel precursor; the colored film is inset between the first gel matrix and the second gel precursor; and releasing the mold to receive the ophthalmic lens.

Disclosed in this specification is a process for manufacturing a thermochromic contact lens. The process includes (1) selecting a photoinitiator that absorbs at a first wavelength and at least one thermochromic dye that displays substantial absorption at the first wavelength when the dye is at a first temperature and exhibits at least an 80% reduction in absorbance at the first wavelength at a second temperature, (2) maintaining the reaction mixture at the second temperature and (3) providing cure light that includes the first wavelength.

The present invention is to provide a full-frame adhesive anti-fog film structure, comprising: an anti-fog film, which has a front side and a back side opposing the front side; and an adhesive, which is disposed at an edge of the back side and arranged along the edge so as to be frame-shaped. The anti-fog film of the present invention is attachable to a planar, cylindrical or spherical lens through the full frame-shaped adhesive so that not only can the anti-fog film be fully attached to the lens but the full attachment of film also prevents bubbles from forming between the two attached surfaces. Also, an airtight space is formed between the full-frame adhesive anti-fog film structure and the lens to stop heat transfer and prevent fog from being formed, so as to not only provide good vision to users but also reduce the chance that the user will fall prey to an accident if the user's view is blocked.

Disclosed in this specification is a process for manufacturing a thermochromic contact lens. The process includes (1) selecting a photoinitiator that absorbs at a first wavelength and at least one thermochromic dye that displays substantial absorption at the first wavelength when the dye is at a first temperature and exhibits at least an 80% reduction in absorbance at the first wavelength at a second temperature, (2) maintaining the reaction mixture at the second temperature and (3) providing cure light that includes the first wavelength.

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 of forming an ophthalmic contact lens using an additive manufacturing apparatus is presented herein. The method providing a first solution comprising HEMA, PEGDA, and a photoinitiator, forming a support structure on a planar print bed of the additive manufacturing apparatus by depositing a first plurality of layers of the first solution and curing the first plurality of layers, and forming an ophthalmic contact lens on the support structure by depositing a second plurality of layers of the first solution and curing the second plurality of layers. The second plurality of layers are arranged such that a disc of the ophthalmic contact lens is oriented generally perpendicular to the planar print bed of the additive manufacturing apparatus.

The present invention relates to a method of manufacturing a thin polarizer, including: forming a film laminate by attaching a polyvinyl alcohol-based film to at least one surface of a polymer film by using attraction force or an adhesive; swelling the film laminate so that a degree of swelling of the polyvinyl alcohol-based film is 0.36 to 0.44; dyeing at least one of iodine and a dichromatic dye on the film laminate; and stretching the film laminate.

There is provided a polarizing film that is excellent in external appearance and can contribute to the improvement of the display characteristics of an image display apparatus. A polarizing film according to an embodiment of the present invention includes a polyvinyl alcohol-based resin film containing iodine. The polarizing film has a ratio I.sub.2/I.sub.1 between an iodine concentration I.sub.1 on one surface and an iodine concentration I.sub.2 on another surface of 3.0 or more.

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.