Abstract: A plastic optical element includes a member and covering portions formed on a first surface and a second surface of the member. A projecting portion made of a material out of which the member is made and a material out of which the covering portions are made is formed on a part of a side surface of the member, and the covering portion of the first surface and the covering portion of the second surface are connected to each other through the projecting portion.

Abstract: A method includes generating a primary beam using light emitted by a light-source. The method includes generating a secondary beam using a portion of the light using a lens of a telescope. The lens includes one or more refraction elements positioned on a first surface of the lens, and the secondary beam is generated by diverting the portion of the light using the one or more refraction elements.

Abstract: An optical element structure and a fabricating process for the same are provided. The optical element fabricating process includes providing a substrate forming thereon a protrusion; and forming an over coating layer over the protrusion and the substrate by a deposition scheme to form an optical element.

Abstract: An light emitting device package and a backlight unit using the same are disclosed, wherein light advancing upward from the light emitting device package can be refracted by a lens to enable the light having a uniform intensity to be emitted upwards to the advantage of efficiency and power consumption, even with a small number of light emitting devices.

Abstract: An optical lens for an optical communication system is provided. The optical lens includes a front portion, a back portion opposite to the front portion, and a converging lens. The front portion includes a front end surface. The front portion defines a recess in the front end surface. The front portion includes a protrusion step protruding from a bottom surface of the recess. The converging lens is formed on the protrusion step.

Abstract: Providing an optical system having excellent optical performance with sufficiently correcting spherical aberration and curvature of field, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes a plurality of lens groups, at least one of the plurality of lens groups having an A lens that satisfies at least one of given conditional expressions.

Abstract: This invention provides a plastic optical lens having a sprue gate plane. An average height of the portion defined by the width of the sprue gate plane is larger than at least one portion outside of a width of the sprue gate plane of any annular cross-section centering an optical axis between an optical effective diameter region and the sprue gate plane. The plastic optical lens is formed by an injection-molding method that employs a mold comprising an inlet channel arranged between the optical effective diameter region and the sprue gate plane. The inlet channel provides a shortcut that facilitates the molten plastics to flow to the optical effective diameter region as early as possible during the lens molding process, thereby avoiding the formation of a void or a welding line in the optical effective diameter region. Consequently, the production yield for the optical lens can be improved.

Abstract: The present invention relates to a man-made composite material and a man-made composite material antenna. The man-made composite material is divided into a plurality of regions. An electromagnetic wave is incident on a first surface exits from a second surface of the man-made composite material opposite to the first surface. A line connecting a radiation source to a point on the bottom surface of the ith region and a line perpendicular to the man-made composite material form an angle ? therebetween, which uniquely corresponds to a curved surface in the ith region. A set formed by points on the bottom surface of the ith region that have the same angle ? forms a boundary of the curved surface to which the angle ? uniquely corresponds. The refraction, diffraction and reflection of the present invention at the abrupt transition points can be reduced.

Abstract: A polycrystalline chemical vapour deposited (CVD) diamond wafer comprising: a largest linear dimension equal to or greater than 70 mm; a thickness equal to or greater than 1.3 mm; and one or both of the following characteristics measured at room temperature (nominally 298 K) over at least a central area of the polycrystalline CVD diamond wafer, said central area being circular, centred on a central point of the polycrystalline CVD diamond wafer, and having a diameter of at least 70% of the largest linear dimension of the polycrystalline CVD diamond wafer: an absorption coefficient ?0.2 cm?1 at 10.6 ?m; and a dielectric loss coefficient at 145 GHz, of tan ??2×10?4.

Abstract: A plastic lens includes a first surface and a second surface. The second surface is opposite to the first surface. At least one of the first surface and the second surface includes an optically effective portion and an outer portion. The outer portion surrounds the optically effective portion. The outer portion includes a rugged region and an abutting region. The rugged region has a plurality of protrusions thereon. The abutting region is disposed farther from a center of the plastic lens than the rugged region.

Abstract: The high sag thick lens is for use in an illumination apparatus, such as a solid state light source. The lens is made of a first lens part having an optical active surface and a series of elongated baffles, the baffles having a top portion, the top portions defining a line that follows the curvature of the optical active surface to create a second lens part of uniform thickness. A second lens part is fused to the first lens part to create the lens. The second lens part has an optical active surface and a series of elongated baffles, the baffles having a thickness comparable to the thickness of the corresponding optical active surfaces. The first and the second baffles are intertwined along the entire length of their lateral surfaces.

Abstract: An optical lens laminate has an adhesive member with at least one aperture, an optical member with an optical feature; and another optical member with an optical feature. The lens laminate may be made by positioning the at least one adhesive member between the optical members, with the apertures aligned with the lens features, and pressing the optical members together.

Abstract: A lens sheet is provided which is configured to create, below the lens sheet, a region not irradiated with light when light is incident on the lens sheet from above. A photoelectric conversion element is efficiently irradiated with light incident on the lens sheet. In addition, a high-efficiency photoelectric conversion module is provided. The lens sheet includes a light-transmitting substrate having lens arrays on both sides, and the lens arrays each have lens regions and non-lens regions placed alternately (in stripes), in which an end portion of each lens region on the front side overlaps with an end portion of each lens region on the back side.

Abstract: Provided are a meta material and a method of manufacturing the same. The meta material comprises: a substrate; at least one conductive nano pattern patterned on the substrate and having a size with a negative refractive index in a predetermined electromagnetic wavelength band; and a dielectric layer covering the conductive nano patterns.

Abstract: The present disclosure relates to a variable focus lens containing graphene, a preparing method of the variable focus lens, a focus controlling method of the variable focus lens, and a display device including the variable focus lens.

Abstract: A lens optical element including an on-chip lens with a convex surface formed at a top part of a column-shaped portion; and a light emitting surface disposed in a state where the light emitting surface is covered by a bottom portion of the column-shaped portion of the on-chip lens. The relationship between a lens height, which is defined as a height from the light emitting surface to a peak of the convex surface, a thickness of the column-shaped portion, and a refractive index of a structural material of the on-chip lens is set so that when the light emitting surface emits light, a state is produced where the convex surface of the on-chip lens appears to have uniform brightness.

Abstract: Provided is a composite optical article including (a) a polymeric base layer comprising a sulfur-containing urethane-based material having a refractive index of at least 1.57; and (b) a polymeric outer layer cast over a surface of the base layer (a) comprising (i) a poly(urea-urethane) material having a refractive index of less than 1.57, and (ii) a photochromic compound and/or a static dye. The thickness of the base layer (a) is greater than the thickness of the outer layer (b).

Abstract: A light-based touch-sensitive surface, including a housing, a surface attached to the housing for receiving touch input, a plurality of light sources in the housing for emitting light that crosses the surface, a plurality of light receivers in the housing for detecting the light emitted by the light sources, a curved lens adjacent to the surface through which the light emitted by the light sources passes, including two substantially similarly curved exterior panels, one of which forms a curved rim for the surface, and a calculating unit in said housing, connected to the light receivers, for calculating a touch location based on an absence of light expected to be received by the receivers.

Abstract: Polymerizable liquid compositions of the polyurethane type, consisting of two components (A) and (B), wherein component (A) contains at least one cyclo-aliphatic diisocyanate monomer or a mixture of one cyclo-aliphatic diisocyanate monomer and a pre-polymer obtained by reaction, in the presence of an acid phosphate ester catalyst, between said cyclo-aliphatic diisocyanate monomer and one or more polyols having two or more hydroxy 1 groups per molecule and a molecular weight ranging from 50 to 2,000 g/mole; the second component (B) contains one or more polyols having a molecular weight ranging from 50 to 2,000 g/mole and a functionality between 2 and 5; in the absence of polyalkoxylated tertiary diamines and organometallic catalysts, said components (A) and (B) being present in a weight ratio which varies from 1:1 to 2:1 and the process for the production of organic glass starting from polymerizable liquid compositions of the polyurethane type.

Abstract: The present embodiment relates to a metamaterial for deflecting electromagnetic wave, includes a functional layer made up by at least one metamaterial sheet layer, each of the metamaterial sheet layers including a substrate and a number of artificial microstructures attached onto the substrate. The functional layer is divided into several strip-like regions. The refractive indices in all the strip-like regions continually increase along the same direction and there are at least two adjacent first and second regions, wherein, the refractive indices in the first region continually increase from n1 to n2, the refractive indices in the second region continually increase from n3 to n4, and n2>n3. The metamaterial of the present invention that deflects electromagnetic wave has a number of regions disposed thereon. In each region, the refractive indices can continuously increase or decrease so that the electromagnetic waves within the regions will be slowly deflected.

Abstract: A first lens includes, on end surfaces of both ends in a direction along an optical axis, a first lens surface, a second lens surface, lens outer edges formed on outer peripheral sides of the first and second lens surfaces, and a lens side surface that is adjacent to the lens outer edges and serves as an outermost surface in a direction orthogonal to the optical axis. The first lens is provided so as to be mountable on a lens holding frame. In the first lens, a first abutment surface provided within one plane orthogonal to the optical axis is provided on at least one of the lens outer edges. A second projection is formed on at least one of the lens outer edges so as to protrude in the direction along the optical axis from a position closer to an inner peripheral side than the lens side surface, and the second projection has a reference cylindrical surface provided in a fixed positional relationship with the optical axis in the direction orthogonal to the optical axis.

Abstract: This invention provides an injection-molded plastic optical lens comprising: an optical effective region and a peripheral region that are concentrically formed. An outer edge of the peripheral region comprises an indentation section, and an accommodation space surrounded by the indentation section of the outer edge of the peripheral region and an extending line extending from the non-indented section of the outer edge of the peripheral region. The accommodation space confines a flash generated during the injection-molding process of the plastic optical lens so that the assembling of the present plastic optical lens will not be affected. The present invention employs a mold having an air duct connected to an indentation configuration of the mold. The indentation section of the plastic optical lens is formed through a mold replication of the indentation configuration.

Abstract: A transparent, non elastomeric, high refractive index, impact resistant poly(thio)urethane/urea material comprising the reaction product of: a) at least one (?, ?)-diiso(thio)cyanate cycloaliphatic or aromatic polysulfide prepolymer, and b) at least one aromatic primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function ranging from 0.5 to 2, wherein, said prepolymer and diamine are free from disulfide (—S—S—) linkage and wherein the (?, ?)-diiso(thio)cyanate polysulfide prepolymer is the reaction product of at least one cycloaliphatic or aromatic diiso(thio)cyanate and at least one (?, ?)-diol prepolymer.

Abstract: A method of manufacturing a co-molded lens assembly comprising injecting a first material in a complete bezel mold having a bezel injection half and a bezel ejection half to form a bezel, and then injecting a second material in a complete optics mold to form a lens that is co-molded to the bezel. A third material is injected in a complete gasket mold to co-mold a gasket to the bezel.

Abstract: There are provided a lens that is molded with high accuracy and a method of molding the lens. The lens has an optical axis and includes a pair of optical functional surfaces on front and rear surfaces thereof. The lens includes an optical functional portion that includes the pair of optical functional surfaces, an edge portion that is provided at an outer periphery of the optical functional portion, and a connecting portion that is provided between the optical functional portion and the edge portion, connects the optical functional portion with the edge portion, and is thinner than the edge portion in a direction of the optical axis.

Abstract: Apparatus, methods, and systems provide emitting and negatively-refractive focusing of electromagnetic energy. In some approaches the negatively-refractive focusing includes negatively-refractive focusing from an interior field region with an axial magnification substantially greaters than one. In some approaches the negatively-refractive focusing includes negatively-refractive focusing with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.

Abstract: The present invention provides a resin composition for a composite optical element including: a first (meth)acrylate having a fluorene skeleton; and a second (meth)acrylate having a biphenyl ring but having no hydroxyl group. In the resin composition, the content of the first (meth)acrylate is 4 to 42 wt %.

Abstract: There is provided an optical laminate excellent in adhesiveness between a (meth)acrylic resin film (base material film) having low moisture permeability and a UV absorbing ability and a hard coat layer, and has suppressed interference unevenness. An optical laminate according to an embodiment of the present invention includes: a base material layer formed of a (meth)acrylic resin film; a hard coat layer formed by applying a composition for forming a hard coat layer to the (meth)acrylic resin film; and a penetration layer formed through penetration of the composition for forming a hard coat layer into the (meth)acrylic resin film, the penetration layer being placed between the base material layer and the hard coat layer, wherein the penetration layer has a thickness of 1.2 ?m or more.

Abstract: A method for restoring a vehicle headlight lens by removing contaminants begins with wiping the lens surface of a vehicle headlight clean. An alcohol-saturated cleaning substance is used to remove debris and pollution from the surface. The alcohol is specifically selected to also remove moisture from the surface of the lens to the greatest extent possible. For optimal cleaning conditions the headlight is heated either by illumination or direct sunlight to a temperature of about 70 to 110 degrees Fahrenheit. A lens restoration solution that includes a dissolving chemical compound such as acetone, methyl ethyl ketone, cyclohexanone and/or tetrahydrofuran is applied to the lens surface, either with an applicator or by spraying. After the lens surface has been restored to a smooth, transparent condition, and adequately hardened, a UV protectant is applied to maintain the lens surface.

Abstract: A lens having an extended range of focus is made of a transparent material and has two optical surfaces. The lens defines an optical axis and a focal power distribution (Ftot) which, in relation to a plane perpendicular to the optical axis, changes as a function of the radial height (r) and of the azimuth angle (phi) of the aperture between a calculated basic value of the focal power (Flens) not equal to zero and a maximum value Fspiral max (r, phi).

Abstract: According to one embodiment, an optical device includes a substrate and a first optical layer. The substrate has a first surface and a second surface. The second surface is on an opposite side of the first surface. The first optical layer is provided on the first surface and includes a plurality of first refractive index setting units disposed along the first surface. Each of the first refractive index setting units has a plurality of metal patterns. The metal patterns provide different permeability to the each of the first refractive index setting units. The each of the first refractive index setting units has a refractive index in accordance with the permeability.

Abstract: Provided are a wafer lens production method, an intermediate die, an optical component, a molding die, and a molding die production method. The production method of a wafer lens (1) includes a first intermediate die production step using a die (7), a second intermediate die production step using the first intermediate die (8), and a wafer lens production step using the second intermediate die (9). A first intermediate-die substrate (80) is provided with a depressed section (85) on the surface facing the die (7). When photo-curable resin (84A) is pressed, at least a portion closer to the first intermediate-die substrate (80) among the top (71a) and the peripheral section (77) of the die (7) is arranged in the depressed section (85), and a gap is provided so that the die (7) does not contact with a depressed plane (85a) of the depressed section (85).

Abstract: An imaging lens includes first, second, third, and fourth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power. The second lens element has a negative refractive power, and concave object-side and image-side surfaces. The third lens element has a positive refractive power. The fourth lens has a curved object-side surface with a convex portion and a concave portion. The imaging lens satisfies AAG/CT3?1.3, where AAG is a sum of distances between any adjacent two of the lens elements, and CT3 is a thickness of the third lens element.

Abstract: A wafer level optical lens structure is provided. A stress buffer layer is disposed between a light-transmissive substrate and a lens layer, so as to improve production yield of the wafer level optical lens.

Abstract: An optical element structure and a fabricating process for the same are provided. The optical element fabricating process includes providing a substrate forming thereon a protrusion; and forming an over coating layer over the protrusion and the substrate by a deposition scheme to form an optical element.

Abstract: This invention provides a calibration method and a corresponding apparatus for optical imaging lens system with double optical paths. The apparatus for optical imaging lens system with double optical paths comprises a first optical subsystem, a second optical subsystem and a calibration module. The calibration module receives a first image data from the first optical subsystem and a second image data from the second optical subsystem. The calibration module calibrates the first image data according to at least one selected optical parameter of the second optical subsystem, and calibrates the second image data according to at least one selected optical parameter of the first optical subsystem. The selected optical parameters of the first optical subsystem and the second optical subsystem are different.

Abstract: Apparatus, methods, and systems provide focusing, focus-adjusting, and sensing. In some approaches the focus-adjusting includes providing an extended depth of focus greater than a nominal depth of focus. In some approaches the focus-adjusting includes focus-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.

Abstract: Apparatus, methods, and systems provide emitting and negatively-refractive focusing of electromagnetic energy. In some approaches the negatively-refractive focusing includes negatively-refractive focusing from an interior field region with an axial magnification substantially greater than one. In some approaches the negatively-refractive focusing includes negatively-refractive focusing with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.

Abstract: The present invention is directed to a composite lens, comprising an anterior rigid gas permeable layer, and an annulus of soft material bonded to a posterior surface of the anterior rigid gas permeable layer, wherein a central zone of the composite lens is rigid and without a soft layer, wherein a peripheral zone of the composite lens is generally rigid in its anterior aspect and soft in its posterior aspect.

Abstract: Apparatus, methods, and systems provide emitting and negatively-refractive focusing of electromagnetic energy. In some approaches the negatively-refractive focusing includes negatively-refractive focusing from an interior field region with an axial magnification substantially less than one. In some approaches the negatively-refractive focusing includes negatively-refractive focusing with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.

Abstract: A method for fabricating millimeter and sub-millimeter size lenses using a high viscosity curable liquid, such as epoxy. The method comprises dispensing a predetermined volume of the curable liquid onto a substrate. The curable liquid preferably has a viscosity higher than 100 cps. Additionally, to reduce spherical aberration, the curable liquid can be cured upside down to leverage the effects of gravity.

Abstract: A method for displaying to an operator a rectangular image having a wide field of view of a scene, includes forming a virtual cylinder from the rectangular image, as if it was first printed on a transparent sheet such that it is visible from both sides of the sheet, and then rolled to form the cylinder. A perspective view of the cylinder is provided, vertically dividing the cylinder into two halves. One of the cylinder halves is vertically shifted until there is no overlap between the two halves. The ellipse which is formed between the two halves following the shifting step is defined as an orientation plane.

Abstract: A light-curing resin composition includes an epoxy resin having two or more epoxy groups in one molecule; a photopolymerization initiator including an anion component and a cation component; and an aralkyl compound having an alcoholic hydroxyl group.

Abstract: The present invention relates to a lens for use with a lamp having at least one LED light source. The lens preferably includes a plurality of projections each having a substantially flat top surface and a plurality of sloping side surfaces, preferably suitable for dispersing the emitted light. Such a variance in light emission may enhance the light being viewed from different angles and positions therefrom.

Abstract: A lens for diverging light includes a bottom surface, a recess defined in the bottom surface, a lower inner curved surface in the recess, and an upper outer curved surface. The lower inner curved surface is configured for receiving light emitted from a light source. The lower inner curved surface includes an inwardly curved lower portion adjacent to the bottom surface, a flat surface portion arranged at a center of a bottom in the recess, and an inwardly curved intermediate portion connected between the lower portion and the flat surface portion. The upper outer curved surface faces away from the bottom surface.

Abstract: Apparatus, methods, and systems provide focusing, focus-adjusting, and sensing. In some approaches the focus-adjusting includes providing an extended depth of focus greater than a nominal depth of focus. In some approaches the focus-adjusting includes focus-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.

Abstract: The present invention is a solar energy device that uses an improved light collector to collect sunlight. The improved light collector is a translucent, and preferably transparent, solid sphere. The light collector transmits sunlight that is incident thereon and emits the light to a focal point on the other side of the sphere. An energy-receiving medium is located at or near the focal point of the emitted light and absorbs energy from the emitted light. The energy-receiving medium uses the energy from the emitted light in accordance with the desired function of the present invention.

Abstract: The invention relates to a lens comprising two or more seating surfaces and an optical axis offset from the center of the lens such that the optical axis is spaced by a first distance from a first seating surface and by a second distance from a second seating surface. The first and second distances are different so that the lens can be orientated to provide at least two different optical axis heights depending upon which seating surface is chosen to seat the lens.

Abstract: A corrective optical system for an imaging optical system is disclosed, wherein the imaging optical system has an objective having a working space, and whose imaging performance is not corrected for one or more plane parallel plates located in the working space. The corrector optical system resides in the working space between the one or more plane parallel plates and objective and serves to reduce the aberrations introduced by the one or more plane parallel plates. The corrector optical system enables objectives originally designed for film to be used with digital cameras.

Abstract: The present disclosure relates to a metamaterial for converging electromagnetic waves, which comprises a plurality of metamaterial sheet layers stacked integrally in an x direction. Each of the metamaterial sheet layers comprises a plurality of metamaterial units. Each of the metamaterial units has an identical substrate unit and a man-made microstructure attached on the substrate unit. The metamaterial units of each row have a same refractive index. Refractive indices of the metamaterial units of each column satisfy particular relationships. The man-made microstructure is a non-90° rotationally symmetrical structure, and an extraordinary optical axis of a refractive index ellipsoid thereof is non-perpendicular to and unparallel to the y direction. The thickness of the metamaterial can be considerably decreased while the function of converging electromagnetic waves is achieved in the present disclosure. This is favorable for making the metamaterial product miniaturized and lightweight.