A method for determining at least one reflow parameter for obtaining a structure approximating a sought structure by reflowing an initial structure different to the sought structure, the initial structure including at least one pattern formed in a thermo-deformable layer arranged on a substrate. The thermo-deformable layer forms a residual layer surrounding each pattern and from which each pattern extends such that each pattern has an interface only with the surrounding medium. The method includes: predicting progression over time of geometry of the initial structure subject to reflow, to obtain a plurality of predicted structures each associated with reflow parameters including at least a reflow time and a reflow temperature; computing correlation values of the geometry of each predicted structure with respect to the sought structure; identifying reflow parameters for obtaining the predicted structure offering a highest correlation value.

A continuous polymer sheet casting apparatus includes first and second endless belts positioned in face to face relationship to each other for a portion of their lengths to form between their inside surfaces a mold cavity for molding a polymeric sheet therebetween, and a container in fluid communication with the mold cavity, the container configured to introduce a liquid monomer or liquid polymer and curing agent and/or initiator to the cavity for polymerization therein; a controlled cooling apparatus in thermal communication with the mold cavity, configured to cool and solidify the polymeric sheet as it moves through the mold cavity, wherein either the first, the second, or the first and second endless belts include a microstructured optical quality tool area on at least a portion of said belt or belts. A mold and process for molding is also disclosed.

A lens assembly and a method of making the assembly are described. The lens assembly includes a first lens and a second lens slidably coupled with the first lens. The second lens includes a silicone material and has a Fresnel pattern surface. Also described is a display device including the lens assembly and an array of light emitting devices coupled with the lens assembly for outputting light through the lens assembly.

Arrays of integrated analytical devices and their methods for production are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The integrated devices allow the highly sensitive discrimination of optical signals using features such as spectra, amplitude, and time resolution, or combinations thereof. The arrays and methods of the invention make use of silicon chip fabrication and manufacturing techniques developed for the electronics industry and highly suited for miniaturization and high throughput.

An exemplary lamp assembly includes a lens, a base, and a textured surface between an outwardly facing surface of the lens and an outwardly facing surface of the base. An exemplary lamp molding method includes injecting a first material into a mold cavity to form a lens, and injecting a second material against a textured surface of the lens within the mold cavity to form a base.

The present invention provides a method for producing a resin molded article through which air bubbles are not easily formed during imprint molding when a curable composition is applied to a mold having a pattern shaped section. The method for producing a resin molded article is a method for producing a resin molded article through imprint molding, the method including: a specific curable composition application process such as the curable composition application process (1) below, in which a curable composition having a contact angle of 50 or less on a mold having a pattern shaped section is applied to a portion of the mold uncoated with the curable composition; and a curing process in which the curable composition applied to the mold is cured to obtain a resin molded article; (1) a curable composition application process including a microparticle application step in which the curable composition is applied such that a particle size of microparticles of the curable composition when adhering to the mold is 0.5 mm or less.

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.

A method for producing an optical article having a Fresnel microstructure and an injection molding system for producing such an article. The method includes heating and cooling a mold and applying a pressure to a thermoplastic material during injection molding of the optical article to facilitate formation of the Fresnel microstructure.

The present invention provides a method for producing a resin molded article through which air bubbles are not easily formed during imprint molding when a curable composition is applied to a mold having a pattern shaped section. The method for producing a resin molded article is a method for producing a resin molded article through imprint molding, the method including: a specific curable composition application process such as the curable composition application process (1) below, in which a curable composition having a contact angle of 50 or less on a mold having a pattern shaped section is applied to a portion of the mold uncoated with the curable composition; and a curing process in which the curable composition applied to the mold is cured to obtain a resin molded article; (1) a curable composition application process including a microparticle application step in which the curable composition is applied such that a particle size of microparticles of the curable composition when adhering to the mold is 0.5 mm or less.

A method for preparing a die for molding of a Fresnel lens includes obtaining a first die block that defines at least one or more portions of a Fresnel lens. The one or more portions defined in the first die block correspond to a plurality of slope facets and a plurality of draft facets. The method also includes adding textures to one or more portions of the first die block that correspond to at least a portion of the plurality of draft facets. A method of making a Fresnel lens includes obtaining the first die block, obtaining a second die block, and coupling the first and the second die blocks. The method also includes providing a molding material into a space defined between the first and the second die blocks, curing the molding material, and removing the Fresnel lens from the first and/or the second die block.