A Fresnel optical element includes a Fresnel surface formed in a material. The Fresnel surface includes a plurality of Fresnel feature that include an active surface and a draft surface. A light absorptive layer is selectively disposed over the draft surface of the Fresnel features. The light absorptive surface is configured to absorb a majority of visible light encountering the light absorptive layer.

A system and method for coating a lens (10) using a plurality of inkjet print bars (46) arranged in-line, includes generating, using at least one processor (54, 110) in communication with the plurality of inkjet print bars (46), at least one graphical user interface configured to facilitate the automation of the creation or selection of an image to be printed on a lens (10); generating a plurality of image layers based on the lens (10) geometry, target product, and number of print bars (46); and controlling, using the at least one processor (54, 110), at least two of the plurality of inkjet print bars (46) to print the image on the lens (10), such that each of the at least two inkjet print bars (46) prints at least one image layer of the plurality of image layers.

A method of preparing and using a contact lens is disclosed. In one step, a light-absorbing dye solution, comprising a light-absorbing dye disposed in a solution, is dispensed onto a contact lens. In another step, the light-absorbing dye is reacted with the contact lens so that the contact lens permanently contains the light-absorbing dye. The transmission of light of a certain wavelength through the contact lens is reduced due to the reacted light-absorbing dye permanently contained within the contact lens.

Ophthalmic lens comprising an ophthalmic thermoplastic substrate and a light polarizing structure onto said substrate. The ophthalmic lens reduced warpage, in particular when submitted to mechanical, thermal and/or chemical treatment.

A method for manufacturing a dye-attached substrate provided with a dye section that includes a sublimable dye to be deposited on a resin body includes a printing step of printing a plurality of units of the dye sections, the dye section for dyeing one resin body or one set of resin bodies constituting one unit, lined up in a longitudinal direction of a long thin substrate, by discharging ink that includes the sublimable dye on the substrate using a printing device, a piece creating step of creating a piece of the substrate that includes the plurality of units of the dye sections, by cutting the substrate on which the dye section is printed, and a drying step of drying the ink of the plurality of units of the dye sections included in the piece of the substrate.

An opaque adhesive can be used to secure the convex surface of a lens blank to a lens blocking piece. This opaque adhesive can include a resin that is curable under ultraviolet light and contains many dispersed pigment particles. The pigment particles may absorb light in the wavelength range of about 300 nm to about 800 nm such that the adhesive appears substantially opaque. A lens-on-block (LOB) system that uses the opaque adhesive to adhere a lens blank to a lens blocking piece facilitates on-block inspection of surface defects by increasing the contrast of light reflected from the surface being inspected. Put differently, the defects in the lens blank's surfaces stand out more when viewed in front of the opaque adhesive The inspection results can be used to carry out rework loops that eliminate or correct the detected defects, providing a streamlined method for on-block manufacturing of ophthalmic lenses.

There is provided a lens element which can maintain an accuracy of the axis alignment between the lens elements and effectively suppress occurrence of ghosting and flares, and an imaging lens unit including such lens element. The fourth lens element 40 of the imaging lens unit 1 integrally comprises a lens portion 41 and an edge portion 42 surrounding the lens portion. The edge portion 42 is provided with an annular step portion 43 as an abut portion for axis alignment with a third lens element 30, and a light shielding portion 46 formed of vapor-deposited films are provided at the annular step portion 43.

A method for imparting an optical element with at least one light influencing property in a gradient pattern. The method includes (a) providing an optical substrate having first and second surfaces; (b) depositing a first composition over the first surface of the optical substrate so as to provide a first treated surface region and an untreated surface region, the first composition including a material which provides a light influencing property; (c) depositing a second composition over the optical substrate of (b) to provide a second treated surface region over the untreated surface region and over a portion of the first treated surface region to form a first overlap region; and (d) spinning the optical substrate of (c) thereby providing the optical element having a light influencing property in a gradient pattern.

The invention is generally related to soft contact lenses which comprise a non-silicone hydrogel lens body and a hydrogel coating thereon. The non-silicone hydrogel lens body is composed of a hydrogel material which is free of silicone and comprises at least 50% by mole of repeating units of at least one hydroxyl-containing vinylic monomer. The hydrogel coating comprises a first polymeric material having first reactive functional groups and a hydrogel layer derived from a second polymeric material having second reactive functional groups, and the hydrogel layer is covalently attached onto the anchor layer through linkages each formed between one first reactive functional group and one second reactive functional group. The soft contact lens has a surface lubricity better than the lubricity of the non-silicone hydrogel lens body and has a friction rating of about 2 or lower after 7 cycles of manual rubbing, a water content of from about 10% to about 85% by weight and an elastic modulus of from about 0.2 MPa to about 1.5 MPa when being fully hydrated at room temperature.

The present invention refers to an optical elements holder device (11) for a coating station (5) comprising at least one sheet carrier (21) having individual openings (23), said opening (23) having in its inner face at least one shoulder (25) configured to hold an optical element (3) such as lenses during a coating procedure, said sheet carrier (21) presenting the shape of a dome or a part of a dome which is mounted above a vaporization source (9) so that the optical elements (3) are oriented towards said vaporization source (9), wherein it also comprises at least one adapter ring (31b) comprising an outer portion (33) configured to be supported by the at least one shoulder (25) of the opening (23) of the sheet carrier (21).