Abstract: A unitary composite lens includes a first lens portion, a second lens portion spaced from the first lens portion, and a connecting portion connecting the first lens portion and the second lens portion. The second lens portion is optically aligned with the first lens portion. The first lens portion, the second lens portion and the connecting portion are comprised of a same material.

Abstract: A compact optical scanning apparatus which can change the focal position of a light beam at high speed is provided. In this optical scanning apparatus, a collimating lens (5) which parallelizes a light beam from a light source (1) is formed by a KTN crystal, and electrodes (7, 6, 8) are placed inside and outside the collimating lens (5).

Abstract: An exemplary lens includes an optical axis, an optically active part, and an optically inactive part surrounding the optically active part. The optically inactive part includes a base and a peripheral sidewall extending in a direction parallel to the optical axis. The base is connected with the active part. The side wall is a hollow cylinder. The sidewall has an internal thread formed on an internal surface thereof.

Abstract: A composite lens of the present invention has a resin layer made from a resin to be polymerized by ultraviolet rays provided on at least a part of a surface of a glass base material, the resin layer including a completely cured resin layer and an incompletely cured resin layer. The incompletely cured resin layer may be formed outside a lens effective diameter. Preferably, the incompletely cured resin layer has a polymerization degree of 60 to 90%.

Abstract: Disclosed herein is a method comprising reacting a phenolphthalein material and a primary hydrocarbyl amine in the presence of an acid catalyst to form a reaction mixture comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, wherein the phenolphthalein material comprises greater than or equal to 99 weight percent phenolphthalein, based on the total weight of the phenolphthalein material; quenching the reaction mixture and treating the quenched reaction mixture to obtain a first solid. The first solid is purified by a combination of techniques to produce a solid comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine with sufficient purity to be used as a monomer in the synthesis of clear polymers.

Abstract: An optical system includes two lens systems, one that provides viewing of an object with relatively no spherical aberration, and another that provides viewing of the object with significant spherical aberration. Preferably, both lens systems provide viewing of the object with relatively no chromatic aberration. The optical system may have the configuration of binoculars.

Abstract: A composition of resonant passive metal-dielectric elements with gain medium results in a meta-material with an effective negative refractive index and compensated losses. To compensate for losses, additional energy is supplied using the stimulated emission from active elements made of a gain material. The overall objective is to overcome the fundamental threshold in resolution for conventional optical imaging limited to about a half-wavelength of incident light. The negative index material with compensated losses (NIMCOL) can be used in NIM-based optical imaging and sensing devices with enhanced sub-wavelength resolution. A lasing device based on overcompensating for the loss in NIM structures is disclosed as well.

Abstract: The present invention provides an optical unit for high-resolution applications all lenses in which are made of plastics. The optical unit includes lens (1) and (2). The lens (1) is a plastic lens having an Abbe number of 45-60. The lens (2) is a lens injection molded from a polycarbonate material comprising a structure derived from spirobiindan and having a glass transition temperature of 120-150° C.

Abstract: An optical element (14) is specified which is suitable for an optoelectronic component and has a carrier part (1) and a beam shaping part (12), wherein the beam shaping part is molded onto the carrier part, or vice versa. A corresponding production method and a composite device comprising the optical element are furthermore specified.

Abstract: The present invention provides a plastic optical component. The plastic optical component has superior characteristics including lightweightness, low cost and suitability for mass production. The plastic optical component exhibits superior moisture barrier quality while experiencing no uneven refractive index profile in their interior even if they are subjected to the effect of water in the environment. An organic-inorganic hybrid layer obtained by a sol-gel process is formed as a moisture-proof coating at least on the surfaces of the plastic optical component's body which are in contact with the outside air.

Abstract: The present invention features a magnifying sheet for magnifying the text on a medicine bottle or a display panel of an electronic device. The magnifying sheet comprises a front side and a back side, wherein the front side comprises a magnifying component, wherein the back side comprises a non-permanent adhesive. The present invention also features a method of enhancing the legibility of text on a medicine bottle or a display panel of an electronic device. The method comprises affixing a magnifying sheet to a medicine bottle or an electronic device, wherein the magnifying sheet comprises a front side and a back side. The front side of the magnifying sheet comprises a magnifying component, and the back side comprises a non-permanent adhesive.

Abstract: Optical elements and methods of forming optical elements are described. In one example, a method applies a photosensitive ink to a substrate and exposes the ink to create an optical element, such as an optical lens or holographic recording medium.

Abstract: A method of designing a transmissive optical element for converting a profile of a light beam from a predetermined input profile to a predetermined output profile is disclosed. The method comprises: calculating a stationary function of a predetermined cost functional selected such that the stationary function satisfies a mapping condition for mapping the predetermined input profile into the predetermined output profile, thereby providing a mapping function. The method further comprises utilizing the mapping function for calculating surface properties of at least a first surface and a second surface of the transmissive optical element.

Abstract: A mold for producing microlenses or a microlens array is produced by sequentially carrying out an etching step of forming quadrangular pyramid concave parts on a single crystal silicon substrate by anisotropic etching and an ion etching step of forming molding concave parts with spherical or cylindrical surface parts from the quadrangular pyramid concave parts.

Abstract: An electronic element wafer module is provided, comprising: an electronic element wafer arranged with a plurality of electronic elements having a through hole electrode; a resin adhesion layer formed in a predetermined area on the electronic element wafer; a transparent cover member covering the electronic element wafer and fixed on the resin adhesion layer; and a plurality of resin optical elements adhered and fixed on the transparent cover member to be integrated in such a manner to correspond to the respective plurality of electronic elements.

Abstract: Provided is an optical information recording/reproduction apparatus in which a tilt margin in a radial direction of an optical disk is increased to thereby reduce a danger that the optical disk and a solid immersion lens come into contact with each other as compared with a conventional case. The optical information recording/reproduction apparatus of the present invention includes: an objective lens for condensing a light beam from a light source; and a solid immersion lens (SIL) that is disposed between the objective lens and an optical recording medium, in which a shape of a bottom surface of the SIL on a recording medium side of the SIL is formed such that a length of the bottom surface in a radial direction orthogonal to a track direction of the recording medium is shorter than a length of the bottom surface in the track direction.

Abstract: According to one aspect of this invention, a deployable shade assembly is provided. The deployable shade assembly comprises a plurality of pivotable panels arranged circumferentially about a common central axis. Each pivotable panel is configured to pivot about a hinge axis oriented in a plane substantially perpendicular to the common central axis. The deployable shade assembly further comprises a plurality of interleaved panels, whereby each interleaved panel is hingedly coupled between adjacent pivotable panels. The pivotable and interleaved panels form a closed structure in a collapsed state of the shade assembly, and the pivotable and interleaved panels form an opening in a deployed state of the shade assembly.

Abstract: A lens is provided which is configured so that the dimensional accuracy of the lens surface can be evaluated easily and accurately, and the control of the accuracy of the lens can be easily performed. The lens comprises a lens effective part having lens surfaces formed around an optical axis as the center and an edge part in a doughnut shape as viewed in a plan view, which is extended along the outer periphery of the lens effective part. The edge part and the lens effective part are molded simultaneously, and annular indices around the optical axis as the center, with which the dimensional accuracy of the lens surfaces can be detected, are formed on both the surfaces of the edge part.

Abstract: A plastic lens molded in a mold having two first molding blocks and two second molding blocks. The first molding blocks transfer light incidence and emission surfaces. The second molding blocks are provided to both ends of the first molding blocks, disposed parallel to an optical axis and facing each other, and transfer non-light-passing surfaces. At least one of the second molding blocks includes an elongated slit-like ventilation hole having a length of a light effective range or longer and extending in a main scanning direction of the light incidence and emission surfaces along positions equidistant from the light incidence and emission surfaces. Through the ventilation hole, air is sprayed onto molten resin in a process of resin cooling and solidification to facilitate cooling of the resin.

Abstract: The present invention recognizes that lenses, such as contact lenses, can be pigmented using ink that includes polymers or polymerizable monomers, preferably the same monomers used to make the lens. The ink can be used to make images on or within the lens. Images made using these inks are preferably digital and can be used in a variety of printing methods, including ink-jet printing.

Abstract: An optical lens has an inner lens surface and an outer lens surface separated by a lens thickness adjacent to an edge portion of the lens. The edge portion has at least a partially exposed edge surface extending substantially linearly from the inner lens surface toward the outer lens surface coextensively with at least a major portion of the lens thickness at a location adjacent to the edge portion, and at a predetermined inclination with respect to a portion of the lens surface at such location.

Abstract: Disclosed is a polythiourethane having a high refractive index and low dispersion which is obtained through a reaction between a polythiol component containing one or more polythiocarbonate polythiol (preferably one having a —(CO—S—R—S)— structure (wherein R represents a divalent hydrocarbon group) and a number average molecular weight of 200-2,500) and a polyisocyanate component containing a polyisocyanate and/or a polyisothiocyanate. This polythiourethane is useful for plastic lenses, prisms, optical fibers, substrates for information recording, colored filters, infrared absorbing filters and the like.

Abstract: In the case of a method of producing aspherical optical surfaces of optical elements (1), in particular for use in microlithography for producing semiconductor elements, the optical element (1) is ground for example in the form of a meniscus. In a first method step, the optical element (1) is introduced into a basic form (2), which has a spherical form bed and is being held at a distance over the form bed (3). After that, an intermediate medium (6) is introduced in the basic form (2) between the optical element (1) and the form bed (3) and, subsequently the optical element (1) being removed together with the intermediate medium (6) from the basic form. Then, the spherical form bed (3) of the basic form (2) or a second basic form is transformed into an aspherical form bed (3?) computationally determined in advance.

Abstract: In part, the invention relates to a lens assembly. The lens assembly includes a micro-lens; a beam director in optical communication with the micro-lens; and a substantially transparent film. The substantially transparent film is capable of bi-directionally transmitting light, and generating a controlled amount of backscatter. In addition, the film surrounds a portion of the beam director.

Abstract: The present invention may provide a structure capable of obtaining a higher difference in refractive indices between that of a transparent material and that of a cavity, than in the past, and a manufacturing method thereof, and the present invention provides a structure having a transparent material and an internal cavity which is formed by irradiating said transparent material with a pulse laser beam having a pulse width of 10×10?12 seconds or less, and wherein refractive index of said transparent material at d line is nd?1.

Abstract: An optical component (10) comprises at least one transparent set of cells (15) juxtaposed parallel to a surface of the component, each cell having a size and a geometry that are different from those of its neighbours forming a network of cells with random distribution and random geometry, parallel to the surface of the component. Each cell is hermetically sealed and contains at least one substance with optical property. The invention also comprises a method of producing such an optical component and its use in the fabrication of an optical element. The optical element can in particular be a spectacle lens.

Abstract: A lens made of a medium exhibiting negative refraction is disclosed. Also, an optical element made of a medium exhibiting negative refraction is disclosed. The lens or optical element may be incorporated in an optical system or an optical apparatus.

Abstract: A system for applications, such as imaging, lithography, data storage, and inspection, includes an optical element, at least one structure, and a source of light. The structure is at least partially in and at least adjacent a surface of the optical element. The source of light has a mode profile that provides an electric field which has a vector component substantially perpendicular to a surface of the optical element. The source of light is positioned to propagate at least a portion of the light through the optical element onto the object. The structure enhances the electric field of the light which optically interacts with the object.

Abstract: Curable thiol-ene compositions containing urethane (meth)acrylate oligomers that are readily polymerized to produce optical articles and coatings are described.

Abstract: In order to prevent infrared from reducing image quality of an image reception device, the present invention discloses a camera lens capable of filtering infrared light. The camera lens includes a barrel, an aperture installed on the barrel for controlling the amount of input light, and an optical lens installed inside the barrel for filtering infrared and performing optical lens.

Abstract: A singlet telescope is provided for reshaping the laser beam to a larger or smaller diameter while maintaining the inherent quality of the beam. Applications for the singlet telescope include intercavity expansion to accommodate the damage thresh-old of various components, expansion of beams to match the size of different wavelengths for final collimation, and shrinking of beams to provide high irradiance for nonlinear processes such as optical parametric oscillation and frequency doubling, with the above applications usually requiring low power magnification or demagnification. Problems involving the utilization of these telescopes over wide temperature ranges and ghost reflections in which a light is reflected back to a pumping laser are minimized with the singlet construction, with the ghost reflections potentially creating damage of components including self-damage or breakdown of air, as well as damage to a Q-switched resonator which causes pre-lasing.

Abstract: A device for altering an intensity distribution of a laser radiation field contains two substrates with differing refractive indices and with two opposed, mutually corresponding optical functional boundary surfaces, which are at least partly curved. The laser radiation field for altering can pass serially through the optical functional boundary surfaces, whereby a difference in the refractive indices of the first and second substrate is less than 0.1 and the cavity, between the first optical functional boundary surface and the second optical functional boundary surface is embodied such that the laser radiation, on propagation from the first substrate into the second substrate, is essentially subjected to one refraction on the basis of the difference in the refractive indices of the first and second substrate.

Abstract: Disclosed herein is a method comprising reacting a phenolphthalein material and a primary hydrocarbyl amine in the presence of an acid catalyst to form a reaction mixture comprising 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, wherein the phenolphthalein material comprises greater than or equal to 95 weight percent phenolphthalein, based on the total weight of phenolphthalein material; quenching the reaction mixture and treating the quenched reaction mixture to obtain a first solid. The first solid is then triturated with a trituration solvent and washed to obtain a second solid, wherein the second solid comprises greater than or equal to 97 weight percent 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, based on the total weight of the second solid. The second solid may be polymerized to form a polycarbonate.

Abstract: Negative refraction in photonic crystals and diffraction grating is used to design plano-concave lenses to focus plane waves. Microwave experiments are carried out to demonstrate negative refraction and the performance of these lenses. Demonstration of negative refraction of visible light is also performed for the grism. These lenses can be used in optical circuits, astronomical applications, etc.

Abstract: The manufacturing method uses a substrate including an SOI layer (112), a SiO2 layer (114) and a Si layer (116). A lens surface (118) is formed on the surface of the SOI layer (112) of the substrate. A lens region including the lens surface (118) and an edge section (120) there around is formed by removing the SOI layer (112), with the exception of a section corresponding to the lens region, until the SiO2 layer (114) is exposed, such that the SOI layer (112) only remains in the lens region. A lens holding section (122) that holds the lens region is formed by removing the Si layer (116), with the exception of a section of the Si layer (116) corresponding to the lens holding section (122), until the SiO2 layer (114) is exposed at the rear surface of the substrate.

Abstract: A device and related method for refracting magnetic waves to enable the temporary or permanent recording of said waves. The device includes a piece of material that is transparent or translucent to magnetic waves. The piece of material, which may be solid, is selected to have a magnetic refraction index greater than a value of one for either its transparent or translucent state. The magnetic waves are selectively passed through the material and recorded on a translation medium for observation.

Abstract: A process for edging an optical lens for conforming the optical lens to the size and shape of a lens frame into which the optical lens is to be accommodated, said process comprising: a) providing an optical lens having a convex surface, the convex surface being provided with an anti-smudge topcoat rendering the optical lens inappropriate for edging; b) fixing a mounting element on the convex surface of the optical lens, preferably on its center, by means of an adhesive pad adhering both to the mounting element and the convex surface of the optical lens to form a mounting element/optical lens assembly; c) placing the mounting element/optical lens assembly in a grinding machine so that the optical lens is firmly maintained; and d) edging the optical lens to the intended size and shape, wherein, prior to step (b) of fixing the mounting element, the anti-smudge topcoat on the convex surface of the optical lens is pre-treated with a solvent selected from the group consisting of alkanols and dialkylketones under a

Abstract: An autoclavable diagnostic ophthalmic lens system includes a biconvex lens element having front and rear surfaces and a housing in which the biconvex lens element is mounted. The biconvex lens element is fabricated from a glass having an index-of-refraction greater of 1.7 or greater. The glass composition meets the following parameters: (% SiO2 (by weight)+% B2O3) is less than 50%; % of alkali metal compounds+% of alkaline earth metal compounds is less than 10%; and (% SiO2+% B2O3)/(% rare earth compounds) is less than 1.

Abstract: In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.

Abstract: An optical apparatus includes an optical element that is made of a medium exhibiting negative refraction. A correction varies a wavelength of light used, thereby correcting a variation in image forming capability, which occurs due to one of a variation in refractive index of the optical element and a variation in refractive index of a surrounding medium.

Abstract: A lens includes a convex surface formed in an outer surface thereof facing away from a light source to uniformly distribute light emitted from the light source; a concave surface concaved inward from an inner region of the convex surface, around an optical axis; and a convex portion convexed outward from a central region of the concave surface, which the optical axis intersects, in order to enhance quantity of light around the optical axis. The lens refracts light beams falling onto the respective areas thereof at different angles, thereby producing a uniform light distribution within a specific lighting range, but does not create a dark area around an optical axis.

Abstract: A compact objective lens is disclosed which is particularly suitable for infrared optical systems. The lens features a simple design with only two lens elements, namely a first lens element receiving incident radiation and having front and rear surfaces, and a second lens element receiving incident radiation from the first element and having front and rear surfaces. The lens forms an image of a scene on a focal plane. At least three of the four surfaces of the elements are aspheric surfaces. The lens has an f-number less than about 2, a field-of-view less than about 30 degrees, and an effective focal length less than about 6 inches. The elements are made from a material selected to pass radiation in the infrared band of the electromagnetic spectrum, e.g., germanium. The lens is suitable for use as an objective lens for a long-wave infrared sight for small arms, e.g., rifle or shoulder-launched surface to air missile launching system, i.e.

Abstract: A lens (10) and a method for forming the lens (10). The lens (10) including a base (12) with plurality of nano-particles (14) therein. The base (12) is made of glass. The nano-particles (14) can filter infrared rays from incoming light and are evenly distribute throughout the base. The method for forming a lens includes: (1) preparing a glass pre-form (60) with nano-particles (14) for filtrating infrared rays; (2) pressing the glass pre-form (60) using a press mold machine (500) to mold a lens (10).

Abstract: To date, the existing sundials and solar compasses use a gnomon, such as a stylet, to project a shadow under the sun on a marked surface to find the time or the true north. Because of the fussiness of the shadow and the dependence of the position of the sun with the day of the year (equation of time), the accuracy is low. The present invention discloses an omni-directional lens, which can focus the sun beam into a sharp spot with a long depth of field. By projecting the spot on a cylindrical panel, both the day of the year and the time of the day can be read off simultaneously with very high accuracy. Because of the simultaneous displaying of time and date, no equation-of-time correction is required. If the time is known, the true north can be determined with high accuracy, and the device becomes a reliable and easy-to-use solar compass.

Abstract: The most accurate method of finding the true north is through astronomical observations, for example, by observing the position of the sun. However, the procedure is complicated. The instantaneous position of the sun must be calculated from astronomical data for each instance of observation, and the operator must wait for the predetermined time to come. Elaborate manual adjustments are required. The present invention discloses an automatic solar compass comprising a cylindrical omni-directional lens, a detection means, and a servomechanism. It is as easy to use as the magnetic compass, but much more accurate and reliable than the magnetic compass.

Abstract: A vision enhancing device for a person having macular degeneration of the retina, comprises a lens and a light diverging surface on the lens that symmetrically diverges away from the eye at an angle relative to an optic axis to redirect incident light away from the optic axis outwardly toward an un-diseased region of the retina. The light diverging surface can be a smooth surface, which can be a continuous curved surface, and can be a diverging conical surface. The lens can be an eyeglass lens, contact lens, intraocular lens, telescopic lens, correction lens, or magnification lens. A light diverging insert having a conical surface and, optionally, an end surface can be used in a lens for redirecting light to the un-diseased region of the retina.

Abstract: A micro-optical element includes a support substrate, a micro-optical lens in a cured replication material on a first surface of the support substrate, and an opaque material aligned with and overlapping the micro-optical lens along a vertical direction.

Abstract: The invention relates to a headlight lens for a vehicle headlight comprising a light source, particularly for a motor vehicle headlight, wherein the headlight lens comprises a transparent lens body made of glass comprising a surface arranged to face the light source and a surface arranged to face away from the light source, and wherein the headlight lens comprises at least with respect to said surface arranged to face away from the light source a layer comprising an aluminum concentration which is higher than an aluminum concentration inside the lens body and/or a sodium concentration which is lower than a sodium concentration inside the lens body.

Abstract: A deformable optical element includes an elastically deformable lens. Electrical contacts are directly attached to the elastically deformable lens and configured to receive an applied voltage. The electrical contacts have opposing surfaces configured to develop electrostatic forces in response to the applied voltage. The electrostatic forces deform the elastically deformable lens to create a predetermined optical effect.

Abstract: An appearing and disappearing type image pickup device having a lens unit and/or a terminal connection unit mounted to be capable of selectively appearing and disappearing in relation to a main body of the image pickup device so that the image pickup device can be used as a multipurpose device. The image pickup device comprises a lens unit for capturing an image of an object, a main body receiving the lens unit in one end of the main body to be capable of appearing and disappearing, an image outputting unit provided at one side of the main body, a recording unit provided in the main body, and a battery installed in the main body for supplying power to the respective components of the image pickup device.