Abstract: The present invention provides inks and methods for making colored silicone hydrogel contact lenses. The ink of the invention comprises an actinically-curable binder copolymer comprising fluorine-containing segments and is characterized by having capability to be cured actinically or thermally to form a colored film on a molding surface of a mold or a silicone hydrogel contact lens and by having an increased durability in a solvated state in a silicone-hydrogel lens formulation in relation to a control colored film obtained from a control ink including an actinically-curable fluorine-free binder copolymer. The invention also provides methods for making colored silicone hydrogel contact lenses based on print-on-mold processes for producing colored contact lenses.

Abstract: A light emitting diode lighting device contains a light emitting diode and a lighting device component, wherein the device component comprises a polycarbonate composition comprising a bisphenol A polycarbonate; and 2,2?-(1,4-phenylene)bis(4H-3,1-benzoxazin-4-one) in an amount effective to provide a composition wherein a molded sample of the composition has a UL94 rating of V-2 or better at a thickness of 0.9 mm; an absorbance of less than 2 a.u. in the region of 370 to 380 nanometers; and an increase in yellowness index (?YI) of 12 or less at 2.5 mm thickness after heat aging at 130° C. for 5,000 hours.

Abstract: The invention relates to a mold having an irregularly uneven surface structure in which an average inclination angle is from 20 to 80 degrees; an optical article having an irregularly uneven surface structure in which an average inclination angle is from 20 to 80 degrees; a method for manufacturing an optical article having an irregularly uneven surface structure by transferring an uneven structure of a mold; a transparent substrate for a surface light emitter which uses an optical article having an irregularly uneven surface structure; and a surface light emitter having a transparent substrate for a surface light emitter.

Abstract: A method for forming a display device includes forming a liquid crystal layer between a first substrate and a second substrate spaced apart from the first substrate, in which the liquid crystal layer includes a liquid crystal composition including a reactive mesogen, applying an electric field to the liquid crystal layer, firstly curing the liquid crystal layer at a temperature from about ?20° C. to about 60° C., and secondly curing the liquid crystal layer without applying the electric field. The liquid crystal composition includes the reactive mesogen in an amount exceeding 0 percent by weight and equal to or smaller than about 30 percent by weight relative to a total weight of the liquid crystal composition.

Abstract: A lens molding apparatus (100) of the present invention includes: a mold (1) having a transfer surface (1a) for transferring a predetermined lens shape to a resin material; a mold (2) having a transfer surface (2a) for transferring a predetermined lens shape to the resin material; a support device (3) for moving the mold (1); a heating device (4) curing the resin material so as to form a lens, the resin material having been supplied between the transfer surface (1a) and the transfer surface (2a); and an ultrasonic vibrator (5) applying vibration from a side surface of the mold (1 or 2) so as to form a gap at least at a part between the transfer surface (1a or 2a) and the lens.

Abstract: The invention provide a class of actinically-crosslinkable silicone-containing prepolymers obtained by functionalizing an intermediary copolymer to have two or more thiol or ethylenically-unsaturated groups covalently attached thereto, wherein the intermediary copolymer is an atom-transfer radical polymerization (ATRP) product of a reactive mixture comprising a polysiloxane ATRP macroinitiator and at least one hydrophilic vinylic monomer. The present invention is also related to silicone hydrogel contact lenses made from a prepolymer of the invention and methods for making the contact lenses in a cost-effective way and with high consistency and high fidelity to the original lens design.

Abstract: A lens forming method comprising the steps of: interposing an uncured resin between a lens molding plate and a flat-shaped transparent substrate that are disposed to face each other so as to keep an externally-opening distance; and performing light irradiation on the resin interposed between the lens molding plate and the transparent substrate so that curing of the resin advances from lens curved-surface parts on the lens molding plate toward a periphery thereof.

Abstract: The present invention aims to improve shape precision of a molded body when a plurality of molded bodies, which are projections or recesses made of a curable resin, are formed on both sides of a glass substrate. Disclosed is a method for producing a molded body, which comprises a step of preparing a first mold having a plurality of negative molding surfaces having shapes corresponding to a plurality of molding parts; a step of applying a curable resin onto a surface of the first mold on which the molding surfaces are formed; and a curing step of curing the applied curable resin. The curing step includes a photocuring step wherein curing of the curable resin is carried out by irradiating the resin with light, and a heat curing step wherein the curable resin partly cured by the photocuring step is further cured by being subjected to a heat treatment.

Abstract: Retroreflective sheeting having a structured layer of cube corner elements and an at least one optically variable mark therein, and methods of making same.

Abstract: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.

Abstract: This invention discloses apparatus for generating an ophthalmic lens with at least a portion of one surface free-formed from a Reactive Mixture. In some embodiments, an ophthalmic lens is formed on a substrate with an arcuate optical quality surface via a source of actinic radiation controllable to cure a definable portion of a volume of Reactive Mixture.

Abstract: A method of making lens modules includes the following steps: A. Provide a plurality of lens members on a die to form a runner between the lens members. B. Provide a housing material in the runner, and then curing the housing material. C. Remove the die to obtain a block. D. Cut the block to obtain a plurality of the lens modules. All kinds of lens modules may be applied in the method to make stronger and smaller lens modules.

Abstract: A method for fabricating flexible display module mainly includes following steps: providing a transparent carrier with a carrying-surface and a back-surface opposite to the carrying-surface; forming a photosensitive-release-film on the carrying-surface; providing a flexible substrate on the photosensitive-release-film; forming a pixel array on the flexible substrate; during or after forming the pixel array, conducting irradiation on the photosensitive-release-film from the back-surface of the transparent carrier to weaken bonding force between the photosensitive-release-film and the transparent carrier or simultaneously weaken both the bonding force between the photosensitive-release-film and the transparent carrier and the structure strength of the photosensitive-release-film; and then, removing the flexible substrate from the transparent carrier, in which at least one portion of the photosensitive-release-film is peeled off from the carrying-surface and remains on the flexible substrate.

Abstract: A system and method for controlling curl in multi-layer webs. The method can include providing a coated web, curing the coating to form a multi-layer web, and stretching the web during curing of the coating. Some coatings shrink at least partially when cured such that curing the coating induces a strain in the multi-layer web. Stretching the web occurs during curing to induce an opposing strain that at least partially counteracts the strain induced by curing to form a multi-layer web having a desired curvature. The system can include a curing section configured to cure the coating, and can further include a web stretching section, which can be located proximate the curing section and can be substantially coincident with the curing section, such that the web is stretched while the coating is cured.

Abstract: In a method for manufacturing a structure of curable material, a first structure from a first curable material is molded and cured on a substrate, and a second structure of a second curable material is molded and cured on a first surface of the first structure facing away from the substrate, so that at the first surface of the first structure a boundary surface forms between the first and second structures so that the first structure is not covered by the second structure in a passage area. A solvent is introduced into the passage area to dissolve the first curable material of the first structure so that a cavity forms between the second structure and the first surface of the substrate. After curing, the first curable material is soluble and the second curable material is insoluble for the solvent. An optical component and an optical layer stack are made of curable material.

Abstract: Optical devices including deterministic aperiodic patterning using spiral arrays exhibit circular symmetry in continuous Fourier space via polarization-insensitive planar diffraction. Far-field diffractive coupling in these structures leads to the formation of scattering resonances with circular symmetry and characteristic vortex behavior carrying orbital angular momentum. Plasmonic nanoparticle arrays with aperiodic spiral geometry can be used in fabrication of optical devices that benefit from polarization insensitive, enhanced light-matter coupling on planar surfaces, such as thin-film solar cells (enhanced light absorption and efficiency), photodetectors (enhanced light emission and efficiency), optical biosensors, and polarization devices.

Abstract: The invention provides an In situ polymerization process which does not require the use of polymerization initiators or solvents for obtaining an electro-optical apparatus wherein a compound having a polymerizable group, preferably an acrylate or methacrylate, is introduced into a cell formed of 1 to 100 microns thick, wherein said compound having a polymerizable group is maintained at a temperature which is above its melting temperature, and a direct current electric field is applied of at least 2.5 V/?m and for a time ranging between 5 minutes and 24 hours until the polymerization of the compound with the polymerizable group is achieved, an then cooled down to room temperature and removing the applied field.

Abstract: A surface-stabilized in-plane switching (SS-IPS) liquid crystal (LCD) cell includes a pair of spaced substrates that include alignment layers disposed thereon. The alignment layers are treated to define a first director orientation. Disposed between the alignment layers is a liquid crystal material that contains polymer fibrils that are disposed upon each of the alignment layers. The polymer fibrils serve to maintain the alignment of the liquid crystal molecules in the first director orientation when no voltage is applied to the LCD cell via interdigitated electrodes disposed upon the alignment layers, thus improving the dynamic response of the SS-IPS LCD cell.

Abstract: Provided is a method for manufacturing a translucent polycrystalline material with optical properties continuously varying in the material. A slurry including single crystal grains that are acted upon by a force when placed in a magnetic field is immobilized in a gradient magnetic field with a spatially varying magnetic flux density and then sintered. For example, where a slurry including single crystal grains of YAG doped with Er and single crystal grains of YAG undoped with a rare earth material is immobilized in the gradient magnetic field, the region with a strong magnetic field becomes a laser oscillation region that is rich in Er-doped YAG, whereas the region with a weak magnetic field becomes a translucent region rich in YAG undoped with a rare earth material. A polycrystalline material having a core with laser oscillations and a guide surrounding the core are obtained at once.

Abstract: A method includes producing a first layer of optical liquid, shaping contactlessly the first layer of the optical liquid according to a desired form, and curing the shaped first layer of the optical liquid with electromagnetic radiation to generate a first optically refracting surface.

Abstract: An X-ray analysis apparatus has at least one X-ray aperture (4; 4a, 4b) which delimits an X-ray beam (RS) emitted by an X-ray source (2). The at least one X-ray aperture (4; 4a, 4b) is disposed at a separation from the sample (5) and has a single crystal aperture body (8) with a through pinhole (9). The single crystal aperture body (8) forms a peripheral continuous edge (10) which delimits the X-ray beam (RS) and starting from which the pinhole (9) widens like a funnel in a direction of an outlet opening (11) of the X-ray aperture (4; 4a, 4b) in a first area (B1). The X-ray analysis apparatus reduces impairment of X-ray measurements due to parasitic scattered radiation and at little expense.

Abstract: A method of creating optical fiber to exhibit predetermined length-dependent characteristics (e.g., chromatic dispersion, polarization mode dispersion, cutoff wavelength, birefringence) includes the steps of: characterizing the fiber's selected characteristic(s) as a function of length; and performing a “treatment” which modifies the refractive index over the given length to adjust the defined parameter to fall within a defined tolerance window. These steps may be repeated one or more times until the measure of the parameter falls with the defined tolerance limits. The treatment process may include, for example, a low energy actinic radiation exposure, anneal, mechanical strain, DC voltage, plasma application, etc. Indeed, if the treatment process is repeated, a different technique may be used to adjust the refractive index (“different” processes include, for example, modifying the strength/time of a UV exposure, temperatures for annealing, etc.).

Abstract: A method for forming a structural body includes irradiating a substrate with light having a periodic intensity distribution and a wavelength within a wavelength region which allows the substrate to show opacity thereby forming a periodic structure causing optical diffraction on a surface of the substrate.

Abstract: A variable focal length achromatic lens includes a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and millisecond switching times while applying a low ac voltage input. The focusing power of the diffractive lens is adjusted by electrically modifying the sub-zones and re-establishing phase wrapping points. The refractive lens includes a fluid chamber with a flat glass surface and an opposing elastic polydimethylsiloxane (PDMS) membrane surface. Inserting fluid volume through a pump system into the clear aperture region alters the membrane curvature and adjusts the refractive lens' focal position. Primary chromatic aberration is remarkably reduced through the coupling of the fluidic and diffractive lenses at a number of selected focal lengths.

Abstract: A method of making lenses includes the following steps: A. Provide a photo-curing material into a cavity between a first die and a second die. B. Expose the photo-curing material under predetermined light, whereby the photo-curing material is solidified, and a transmittance of the solidified photo-curing material is greater than 75%. C. Remove the first die and the second die to obtain a lens material; and D. Cut the lens material to obtain a plurality of lenses.

Abstract: A method of making lenses includes the following steps: A. Provide a photo-curing material into a cavity between a first die and a second die. B. Expose the photo-curing material under predetermined light, whereby the photo-curing material is solidified, and a transmittance of the solidified photo-curing material is greater than 75%. C. Remove the first die and the second die to obtain a lens material; and D. Cut the lens material to obtain a plurality of lenses.

Abstract: A curable composition and a process for using the curable composition within a grating-coupled waveguide (GCW) sensor are disclosed. The composition can be used for facile replication of optical components, specifically those used in a label-independent detection system where operation of the waveguide is dependent on the detailed formation of micro and nano size patterns. The photo or electron beam curable composition has low viscosity (?500 cPs) and cures to an optically clear material with high glass transition temperature (?70° C.), low shrinkage on cure, low outgassing, and low extractables.

Abstract: A method for modifying the refractive index of an optical, hydrogel polymeric material. The method comprises irradiating predetermined regions of an optical, polymeric material with a laser to form refractive structures. To facilitate the formation of the refractive structures the optical, hydrogel polymeric material comprises a photosensitizer. The presence of the photosensitizer permits one to set a scan rate to a value that is at least fifty times greater than a scan rate without the photosensitizer in the material, yet provides similar refractive structures in terms of the observed change in refractive index. Alternatively, the photosensitizer in the polymeric material permits one to set an average laser power to a value that is at least two times less than an average laser power without the photosensitizer in the material, yet provide similar refractive structures.

Abstract: A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form. The tear lens follows or assumes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provide an optical element for correction of refractive error.

Abstract: Provided is an apparatus for preparing a sample including: a sample stage that supports a sample; a focused ion beam column that applies a focused ion beam to the same sample and processes the sample; and an irradiation area setting unit that sets a focused-ion-beam irradiation area including a first irradiation area used to form an observation field irradiated with an electron beam in order to detect backscattered electrons and a second irradiation area used to form a tilted surface tilted with respect to the normal line of the observation field with an angle of 67.5° or more and less than 90°.

Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other, a plurality of first electrodes on the first substrate, a first vertical alignment layer on the first electrodes, a second electrode on the second substrate, a second vertical alignment layer on the second electrode, and a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer includes liquid crystal molecules having negative dielectric anisotropy, a chiral dopant, and an alignment aiding agent.

Abstract: Provided is a method of producing a composite optical element, including performing stress removal after molding a composite optical element by integrating a resin material with one surface of a glass material in a heated state, in which, after the composite optical element prepared in the molding is cooled to a first cooling temperature lower than a glass transition temperature of the resin material, an interface layer of the resin material, the interface layer contacting the glass material, is heated to a temperature equal to or higher than the glass transition temperature of the resin material, by causing infrared light having a wavelength region in which an infrared absorptivity of the resin material is higher than that of the glass material to enter from another surface of the glass material, and then the composite optical element is cooled to a second cooling temperature lower than the first cooling temperature.

Abstract: A lens sheet manufacturing method according to one aspect of the presently disclosed subject matter includes: conveying an original lens sheet having a plurality of linear lens elements arranged and formed in parallel with each other on a front sheet surface; detecting an edge line of one of the lens elements; determining whether the detected edge line and a trimming direction blade included in a punching blade are parallel with each other; when it is determined that they are not parallel with each other, controlling a conveying direction of the original lens sheet so that the trimming direction blade and the detected edge line are parallel with each other; and temporarily stopping conveying with the edge line of the lens element and the trimming direction blade being parallel with each other and punching the original lens sheet with the punching blade to manufacture a separated lens sheet.

Abstract: In a method of manufacturing an optical waveguide using a flat die having a groove therein, the method includes: (a) forming a first cladding sheet on a base substrate; (b) placing the first cladding sheet and the base substrate on the flat die such that the first cladding sheet faces the groove of the flat die; (c) filling the groove with a liquid resin and then curing the liquid resin, thereby forming a mirror support on the first cladding sheet; (d) removing the flat die from the first cladding sheet; (e) forming a metal reflection film on the mirror support; (f) forming a core sheet on the first cladding sheet such that the core sheet covers the mirror support that is formed with the metal reflection film; (g) forming a second cladding sheet on the core sheet; and (h) removing the base substrate from the first cladding sheet.

Abstract: Embodiments relate to use of a particle accelerator beam to form thin layers of material from a bulk substrate. In particular embodiments, a bulk substrate (e.g. donor substrate) having a top surface is exposed to a beam of accelerated particles. In certain embodiments, this bulk substrate may comprise a core of crystalline sapphire (Al2O3) material. Then, a thin layer of the material is separated from the bulk substrate by performing a controlled cleaving process along a cleave region formed by particles implanted from the beam. Embodiments may find particular use as hard, scratch-resistant covers for personal electric device displays, or as optical surfaces for fingerprint, eye, or other biometric scanning.

Abstract: A reactive mesogen compound, a liquid crystal composition including the reactive mesogen compound, a method of manufacturing a display panel, and a display panel are disclosed. The reactive mesogen compound may be activated by light having a wavelength between about 300 nm and about 700 nm.

Abstract: A method of producing a plastic polarized lens with excellent processability and the like by injecting a mixture of a specified isocyanate compound and a specified active hydrogen compound into a lens-forming mold wherein a polarized film containing a thermoplastic polyester is fixed, followed by polymerization and curing.

Abstract: Method of manufacturing a lens assembly by means of a replication process, wherein the following steps are carried out i) introducing a first, liquid, UV curable composition (2) into a first mould (1) provided with regularly spaced-apart cavities (6), ii) curing said first composition by UV radiation so as to obtain a first lens element comprising lenses arranged beside each other, wherein the surface of the obtained lens element is the negative of that of the cavities, in) applying a second, liquid, UV curable composition (5) to the first composition cured in step ii), iv) placing a second mould (4) on the second composition (5) applied in step iii), which second mould is provided with regularly spaced-apart recesses (7), in such a manner that said recesses will fill with the second composition, v) curing the second composition by UV radiation so as to obtain a second lens element comprising lenses arranged beside each other, wherein the surface of the obtained lens element is the negative of that of the rec

Abstract: A retarder film provides a first light retardation and can be heat processed in one or more selected areas to provide a second light retardation in the selected area(s). The retarder film may have an absorption characteristic such that the heat processing can be carried out by selectively exposing the film to a suitable radiant beam. The retarder film is composed of a stack of contiguous ultrathin layers configured to provide an effective optical medium for visible light. Visible light propagates through the stack as an effective medium having effective refractive indices along principal x-, y-, and z-axes. At least some of the ultrathin layers possess intrinsic birefringence, and the effective indices of the stack are functions of the intrinsic refractive indices of the constituent ultrathin layers. The heat processing is carried out so that the ultrathin layer stack structural integrity is not substantially altered in the processed area(s).

Abstract: Ophthalmic device molds made from at least one vinyl alcohol copolymer and having a static sessile drop contact angle of less than 70 degrees, ophthalmic devices such as ocular inserts and contact lenses and including silicone hydrogel devices formed using these molds, and related methods are described. The methods of manufacturing ophthalmic devices can use dry or wet demolding processes, or dry or wet delensing processes.

Abstract: A method of treating of a lens forming surface (2) of at least one mold half (1) of a mold for molding an ophthalmic lens, in particular of the lens forming surface of a glass mold half for molding a contact lens, especially a soft contact lens, includes the steps of: providing a plasma (10) under atmospheric pressure, and exposing the lens forming surface (2) to the plasma (10) under atmospheric pressure thereby hydrophilizing the lens forming surface (2) without depositing any material on the lens forming surface (2).

Abstract: Compositions and methods wherein ordered structures of photonic nanocrystals are created in a liquid medium and then such structures are fixed by converting the liquid medium to a solid. In addition, compositions and methods of reversibly fixing such structures, so that ordered structures can be reversibly created in a liquid medium, converted to solid, and then converted back to liquid, wherein new ordered structures can be created and again fixed.

Abstract: According to embodiments of the invention, the design and fabrication of a binary superimposed grating (BSG) results in better performing devices that may be fabricated using existing technology. The fabrication process includes forming grating features based upon repeating features of the desired superposition function. The design process also relaxes the processing requirement for equivalently performing devices.

Abstract: This invention is related to lenses and the associated processes used to manufacture lenses. In particular, the present invention is related to a process for designing and creating bifocal, multifocal, and single vision ophthalmic lenses by modulating an energy source.

Abstract: Disclosed is a method for manufacturing a visibility improvement sheet that comprises light absorbing portions having a substantially rectangular cross-section and can realize a high contrast while maintaining a view angle. The visibility improvement sheet is manufactured by forming light transparent portions juxtaposed to each other at predetermined intervals to form grooves having a substantially rectangular cross section juxtaposed to each other between the light transparent portions, filling the grooves with an ink composition comprising a transparent ionizing radiation curable resin composition and colored fine particles, and curing the ink composition in such a state that fine air bubbles are randomly dispersed in the filled ink composition.

Abstract: The invention provides a silicone hydrogel contact lens including a hydrolyzable polymer. The hydrolyzable polymer can be converted by hydrolysis into a hydrophilic polymer which is capable of imparting the silicone hydrogel contact lens a hydrophilic surface without post-curing surface treatment.

Abstract: A wafer lens member producing method includes post-curing lens portions made of a light-curing resin formed on at least one face of a substrate so as to promote curing of the light-curing resin. The post-curing includes first post-curing and second post-curing. The first post-curing performs heating at a first post-curing temperature, which is a glass transition temperature of the light-curing resin to the glass transition temperature+100° C., for 30 minutes to two hours. The second post-curing performs heating at a second post-curing temperature, which is lower than the glass transition temperature, and lower than the first post-curing temperature by 25° C. or more, for three hours to six hours.

Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a first base substrate, a pixel electrode disposed on the first base substrate and including a plurality of branch portions, and a first alignment layer disposed on the pixel electrode. The second substrate includes a second base substrate, a common electrode disposed on the second base substrate, and a second alignment layer disposed on the common electrode.

Abstract: The invention provide a new lens curing method for making hydrogel contact lenses. The new lens curing method is based on actinically-induced step-growth polymerization. The invention also provides hydrogel contact lenses prepared from the method of the invention and fluid compositions for making hydrogel contact lenses based on the new lens curing method. In addition, the invention provide prepolymers capable of undergoing actinically-induced step-growth polymerization to form hydrogel contact lenses.

Abstract: The exemplary embodiments of the present invention provide a method and system for aligning graphite nanofibers in a thermal interface material to enhance the thermal interface material performance. The method includes preparing the graphite nanofibers in a herringbone configuration, and dispersing the graphite nanofibers in the herringbone configuration into the thermal interface material. The method further includes applying a magnetic field of sufficient intensity to align the graphite nanofibers in the thermal interface material. The system includes the graphite nanofibers configured in a herringbone configuration and a means for dispersing the graphite nanofibers in the herringbone configuration into the thermal interface material. The system further includes a means for applying a magnetic field of sufficient intensity to align the graphite nanofibers in the thermal interface material.