Provided is a Fresnel lens which has excellent heat resistance and which can covert light even from a poor-quality semiconductor light sources into uniform, high-quality light and can disperse the resulting light without lowering the central illuminance. The Fresnel lens according to the present invention includes two or more sawtooth prisms in a surface thereof and is made of a cured product of a curable composition containing an epoxy compound (A). Of the sawtooth prisms, a sawtooth prism having a longest inclined side in a cross section has a roughened surface, where the cross section is given by cutting the Fresnel lens in a plane which passes through the center of the Fresnel lens and which is perpendicular to a reference plane of the Fresnel lens.

Provided is a technique that can suppress stray light incident on a microlens array from a gap between a lens component and a light shielding film and improve the imaging performance of the microlens array.

A light shielding film is provided around one or more lens components arranged at a base material portion having a substantially flat plate shape such that a predetermined gap region is formed with respect to at least a portion of an outer periphery of the lens component, and a surface roughened region having a surface roughness greater than that of another region in the base material portion is provided in at least a portion of the gap region.

The process for manufacturing a photovoltaic concentrator comprising a photovoltaic substrate (2) equipped with a plurality of photovoltaic cells (5), and an optical structure (1) comprising a first optical-lens stage (4) and a second optical-lens stage (3) that are intended to optically interact with each other, includes (i) providing a mould (6); and (ii) simultaneously forming the first optical-lens stage (4) and the second optical-lens stage (3) using said provided mould (6), and implementing a step of filling said mould (6) with a material (100), especially by injecting or pouring said material (100).

A method of manufacturing a plurality of optical elements comprising the steps of providing a substrate (120) providing a tool (100) comprising, a plurality of replication sections (106) each defining a surface structure of one of the optical elements, and at least one contact spacer portion (112), aligning the tool (100) and the substrate (120) with respect to each other and bringing the tool (100) and a first side of the substrate (120) together, with replication material (124) between the tool (100) and the substrate (120), the contact spacer portion (112) contacting the first side of the substrate (120), hardening the replication material (124), and separating the tool (100) from the substrate (120) with the hardened replication material adhering to the substrate (120), wherein the tool (100) has yard line features (304) around at least a portion of the replication sections (106), the yard line features (304) configured to contain the replication material (124) on a first side of the yard line with respect to both the tool (100) and the substrate (120).

A method for making an improved contact lens with the steps of providing a mold with a space between the top surface and a bottom surface, and positioning a mat in the space of the mold, providing a bead of liquid polymer of predetermined size at a predetermined location on the surface of the mat, pressing the bead of liquid polymer into the mat between the top surface and the bottom surface of the mold to form an optical zone framed by a mat peripheral zone, exposing the optical zone and the peripheral zone with U-V radiation to harden the optical zone into a composite improved contact lens, removing the cross-linked improved contact lens from the mold, processing the peripheral zone surrounding the optical zone to have a fenestration surface having holes, the holes being through holes with predetermined diameters selected to pass larger proteins, lipids, metabolites.

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 are a method with which a spectacle lens molding mold having a minute recess can be made with high accuracy, and the like. A method for producing a molding mold 12 for molding a spectacle lens 1 in which a minute protrusion 6 is formed on at least one surface thereof includes a first molding mold preparation step of preparing a first mold 14 that includes a base material 26 and a coating portion 28, the coating portion being made of a nickel alloy, coating the base material, and having a surface formed into a shape corresponding to the shape of one surface of the spectacle lens; and a cutting step of cutting a recess 28A corresponding to the protrusion into the surface of the coating portion of the first mold.

A method for producing a polarizing lens having a high luminous transmittance and degree of polarization with astigmatism kept low, and a polarizing film and a polarizing lens. The method for producing a polarizing lens includes: contracting a polarizing film at a maximum rate of contraction of 5% or more and 30% or less under moist conditions; processing the polarizing film into a curve; drying the polarizing film at temperature T.sub.1; providing a mold having a cavity in which the polarizing film is placed in the inside; injecting a curable composition into the cavity; curing the curable composition to obtain a polarizing lens in which the polarizing film is placed in the inside; and annealing the polarizing lens at temperature T.sub.2, wherein a relationship between the temperature T.sub.1 and the temperature T.sub.2 satisfies the following expression (1): T.sub.1>T.sub.2 . . . (1).

A method for producing a spectacle lens 2 including a base portion 2 that is made of a resin material and includes a convex object-side face and a concave eyeball-side face, and an optical element 12 that is made of a material different from the material for forming the base portion and is embedded in the base portion, is described. The method includes: arranging an optical element in a cavity 28 of a mold including a first mold part 20 and a second mold part 24 that can be opened and closed; introducing a resin material for forming a base portion of the spectacle lens into the cavity of the mold; obtaining the spectacle lens by curing the resin material that is a resin for forming the base portion; disassembling the mold; and detaching the spectacle lens from the mold.

Embodiments of the disclosure provide a method for fabricating a shaped optical component, and a method for making a micro assembly with a plurality of shaped optical components. The method for fabricating a shaped optical component includes creating a master mold containing a substrate with a predefined surface contour. The method further includes generating a polydimethylsiloxane (PDMS) mold with a concave part having an inverse pattern matching the predefined surface contour. The method additionally includes filling the concave part of the PDMS mold with a light-curable optical adhesive. The method additionally includes sealing the adhesive-filled concave part with a flat PDMS slab to form a PDMS structure. The method additionally includes curing and hardening the optical adhesive inside the PDMS structure to form the shaped optical component. The method additionally includes detaching the shaped optical component from the PDMS structure.