Lens coatings and coated lenses which offer full-spectrum protection by reducing back-side reflection of all light spanning from the ultraviolet sub-band B (UVB) to infrared (IR-A) region are provided. The full-spectrum back-side anti-reflective coatings disclosed herein are comprised of multiple thin-film layers of high refractive index (HighIndex) and low refractive index (LowIndex) materials. In many embodiments, the penultimate layer distal from the substrate lens is a HighIndex layer, and the final layer distal from the substrate lens is a LowIndex layer.

An object of the present invention is to provide a thin and lightweight polarizing lens for use in lightweight sunglasses (in particular, rimless sunglasses) while maintaining the clamping force and mechanical strength of a temple part, and a manufacturing method therefor. The values of: the center thickness v of a polarizing lens A including an injection-molded layer 3 laminated on at least one surface of a polarizing sheet B, the injection-molded layer having a polyamide-based resin; and the flexural modulus of the injection-molded layer 3 are adjusted, thus the predetermined clamping force and mechanical strength of a temple part are obtained even in the case of sunglasses with the thin and lightweight polarizing lens.

A fixture used in the manufacture of an eyepiece, to cut the eyepiece to a particular shape, and a method of using the fixture to cut the eyepiece to have a desired shape. Embodiments are directed to a configurable fixture to align, hold, and protect a plastic sheet (e.g., a wafer) while a laser cutting apparatus is cutting one or more eyepieces out of the wafer. During the cutting, the fixture protects the eyepieces from reflected laser light by providing voids around the laser cutting lines, and by supporting each eyepiece near its perimeter. The fixture can be quickly rearranged for different eyepieces, different eyepiece shapes, and/or different plastic sheet sizes.

A method of spacing an object from a mould for the formation of a multi-layered polymer. The method comprises: attaching at least one spacer to the object; attaching the at least one spacer to the mould; and adding material to the mould to form the multi-layered polymer.

Provided is a technique by which an optical member is marked without degrading the quality of the optical member. The optical member is produced through a removing step (S108, S113) of partially removing a low refractive index layer, which is the outermost layer of a multilayer structure in which the low refractive index layer and a high refractive index layer are layered on each other, by performing non-heating processing on an antireflection film that is formed to cover an optical surface of an optical base member and has the multilayer structure, through irradiation with an ultrashort pulse laser beam so as to expose the high refractive index layer.

The invention provides a machine for manufacturing an ophthalmic article molded by casting and having a straight peripheral edge, comprising a mold assembly (2) having first and second molding shells (10, 13) provided with first and second predetermined molding surfaces (12, 14) and facing to each other, an adhesive tape member (20) joining said shells for forming a molding cavity (8), having a Young's modulus greater than 200 MPa and a maximum shear stress smaller than 0.05 MPa when measured at a temperature of polymerization of a molding material, and also configured to form a peripheral case of the mold assembly in which said first molding shell is able to be displaced relative to the second molding shell without affecting an intermediate portion (22) of the adhesive tape member which define said cavity, and a filling aperture formed in said adhesive tape member for introducing by casting said material into said cavity for forming the article.

The disclosed optical lens assemblies may include a deformable optical element including a substantially transparent transducer configured to deform, and thus change at least one optical property of, the deformable optical element. At least a portion of the substantially transparent transducer may be positioned within a substantially transparent optical aperture of the optical lens assembly. Various head-mounted displays incorporating such an optical lens assembly, and methods of fabricating the same, are also disclosed.

A method for manufacturing an ophthalmic lens using an additive manufacturing technology, based on an optical element and initial manufacturing data, the initial manufacturing data including data defining a complementary portion to deposit on the optical element to form the ophthalmic lens from the optical element, includes the steps of: positioning the optical element on a support; determining a positioning error between the position of the optical element and a reference position on the support using a measurement directed to the optical element; determining a deterioration on the optical element; calculating updated manufacturing data taking into account initial manufacturing data and the determined positioning error; and manufacturing the ophthalmic lens using the updated manufacturing data by the additive manufacturing technology by depositing the complementary portion on the optical element to form the ophthalmic lens from the optical element. A manufacturing system for manufacturing an ophthalmic lens is also described.

A method for manufacturing an optical lens by additive manufacturing, includes steps of: depositing a first layer having a first thickness; —depositing a second layer, having a second thickness, onto the first layer, the second layer forming a first asperity with the first layer; depositing a third layer having a third thickness; depositing a fourth layer having a fourth thickness onto the third layer, thereby forming an intermediate optical element, the fourth layer forming a second asperity with the third layer; and smoothing the first asperity and the second asperity on the intermediate optical element, thereby forming the optical lens. The second thickness and the fourth thickness are different. A corresponding intermediate optical element is also described.

The invention relates to a method for producing a lens for an ultrasound apparatus, as well as to an apparatus comprising the lens. The method comprises choosing a source point, providing a treatment volume situated inside a bone tissue model, providing a plurality of nodes distributed inside the treatment volume, and simulating the emission of a spherical wave from each of the nodes. Thus, a simulated wave front is created, in which each spherical wave has an amplitude and a phase, there being at least two nodes with different amplitudes and/or phases. The simulated wave front is received on a receiving surface. On the basis of the processed results, a holographic lens surface is designed, which can generate a wave pattern equivalent to the simulated wave.