Abstract: A system, apparatus and method of improved measurement of the SPF factor of sunscreen compositions. In one embodiment, a method of measuring the protection of a sunscreen composition includes exposing skin to a known intensity of light, measuring the amount of remitted light from the skin, applying sunscreen to the skin, exposing the skin to which the sunscreen has been applied the known intensity of emitted light of the spectrum of light from which the sunscreen is intended to protect the skin, measuring the amount of light remitted from the skin, and calculating a UltraViolet-A Protection Factor (UVA-PF) of the sunscreen by comparing the amount of light remitted from the skin with the sunscreen to the amount of light remitted from the skin without the sunscreen.

Abstract: A distance measuring device comprising a sensor for highly accurate distance measurement with a very high dynamic range and range walk compensation, said sensor being provided by means of an array of single photon avalanche photodiodes.

Abstract: A light guiding structure, a display device and a method of using the same are provided. The light guiding structure includes a housing including an opening; and a first optical fiber structure, an image collection module, a second optical fiber structure, and an image compensation module in the housing. The first optical fiber structure is configured to transmit light incident into the opening to the image collection module; and the second optical fiber structure is configured to transmit an image displayed by the image compensation module to the opening. The display device includes the light guiding structure.

Abstract: Example embodiments of the present invention relate to systems methods and computer program products for bend estimation. The system comprises a first and second light absorbers disposed at a substantially same position along an axis of a light guide and enabled to absorb first and second respective amounts of a plurality of wavelengths of a light transmitted along the light guide, a light detector enabled to detect respective intensities of the plurality of wavelengths of the light not absorbed by the first and second light absorbers, and a processor enabled to calculate a bend state of the light guide according to the detected intensities of the plurality of wavelengths of the light.

Abstract: A control circuit is configured to: change a dispersion state of the electrophoretic particles by controlling voltage across the first transparent electrode and the second transparent electrode to change a range of exit direction of light transmitted through the light transmissive regions and the dispersion medium; apply direct voltage at a first voltage value across the first transparent electrode and the second transparent electrode to change the range of exit direction from a narrow range to a wide range; measure luminance of light transmitted through the light beam direction control panel during application of the voltage at the first voltage value; and increase the voltage value to be applied across the first transparent electrode and the second transparent electrode in a case where the measured luminance of the transmitted light is lower than a target value.

Abstract: Systems and methods for conducting contact-free thickness and refractive-index measurements of transparent objects, such as intraocular lenses using a dual confocal microscopy system are disclosed.

Abstract: Devices with gamma (?) grooves are disclosed. The ? grooves can be used to form optical fiber arrays. The ? grooves can be formed using a dry etch, such as RIE, by modifying resist features of an etch mask to have convex curved sidewalls. The profile of the resist features is transferred to the substrate by the dry etch to form the ? grooves. The ? grooves are formed without K containing etchants, avoiding K+ ions contamination of process tools as well as health issues caused by handling alkali containing devices.

Abstract: A display including: a plurality of light sources that emit light beams; a plurality of optical cores having an elongated shape, each optical core having a respective first end, which is optically coupled to a corresponding light source, each optical core further being such that the light beam emitted from the corresponding light source propagates in a guided manner inside the optical core; and a screen, each optical core having a respective second end, which is optically coupled to the screen. The display further includes an optical separation element, which forms a plurality of cavities that house corresponding optical cores, each cavity and the corresponding optical core forming a corresponding waveguide. The optical separation element absorbs visible light and laterally surrounds at least the first end of each optical core.

Abstract: The present disclosure relates to light arrangement for an optical device for measurement of an index of refraction, having a light source, a fiber bundle arrangement for transmitting light from the light source, a diffusing member, and imaging optics for transmitting the light to a measuring window. In order to provide for an arrangement which is durable and accurate even when used for measuring hot specimens where the light source is positioned far from the measuring window, the fiber bundle arrangement includes a novel combination of a first fiber bundle and a second fiber bundle.

Abstract: A hollow core optical fiber guide is provided that comprises a body for reflecting light comprising a first end, a second end, a longitudinal dimension extending between the first end and the second end, an inner sidewall, an outer sidewall, and a transverse dimension extending radially between the inner sidewall and the outer sidewall, wherein the body comprises a plurality of optically dielectric material and each of the plurality of dielectric material having a different refractive index; and a light guiding core region disposed within the body.

Abstract: A remote monitoring system can include a plurality of infrared cables, where each of the infrared cables can have a respective first opening at a first end of the cable and a respective second opening at a second end of the infrared cable that is opposite the first end. The infrared cables can be configured to conduct infrared light emitted from a respective one of a plurality of monitored locations into the respective first opening to exit at the respective second opening. An infrared camera including an infrared sensor array can be optically coupled to each of the second openings of the plurality of infrared cables.

Abstract: Apparatus and method according to an exemplary embodiment of the present invention can be provided for analyzing tissue. For example, the apparatus can include at least one first arrangement configured to illuminate at least one anatomical structure with at least one of at least one electro-magnetic radiation. The apparatus can also include at least one second arrangement that may include at least two wave-guiding arrangements associated with one another that are configured to receive a further electro-magnetic radiation reflected from the tissue and transmit at least one speckle pattern associated with the further electro-magnetic radiation. The wave-guiding arrangements may be structured so as to reduce crosstalk therebetween.

Abstract: A converter plate includes an array of optical fibers arranged axially parallel to each other. The optical fibers have optical properties selected to convert light from a light-emitting diode entering the optical fibers from one end of the array of optical fibers to light of a different wavelength exiting the fibers from another end of the array of optical fibers. The optical properties of some of the optical fibers differ from the optical properties of others of the optical fibers such that the light exiting the some of the optical fibers has a wavelength different from that of the light exiting the others of the optical fibers. The converter plate is manufactured by providing the optical fibers and combining the optical fibers into a bundle, the optical fibers being arranged axially parallel to each other. The bundle of optical fibers is drawn to attenuate the bundle of fibers into a secondary fiber having a reduced cross section.

Abstract: A video signal distributor that copies a video signal according to a size of a display region of a device, a video signal magnification/reduction section that magnifies or reduces the copied video signal in accordance with a resolution of the device, a first image size change processor that performs image size increase/decrease processing in such a way that the video signal has a magnification that corresponds to a size of a first display region of the device, and a second image size change processor that performs the image size increase/decrease processing in such a way that the video signal has a magnification that corresponds to a size of a second display region of the device, are included.

Abstract: An endoscopic optical system including: a fiber image conductor arranged in an elongated shaft tube, the fiber image conductor having a proximal face; an objective arranged distally relative to the fiber image conductor; an observation device arranged proximally relative to the proximal face of the fiber image conductor; a mask; and a transparent cover pane arranged between the proximal face of the fiber image conductor and the observation device; wherein the transparent cover pane is configured as a moire filter.

Abstract: A display may have an array of display pixels that generate an image. A coherent fiber bundle may be mounted on the display pixels. The coherent fiber bundle may have a first surface that is adjacent to the display pixels and a second surface that is visible to a viewer. The coherent fiber bundle may contain fibers that carry light from the first surface to the second surface. The second surface may be planar or may have a central planar region and curved edge regions that run along opposing sides of the central planar region. The fibers may have cross-sectional surface areas with a first aspect ratio on the first surface and a second aspect ratio that is greater than the first aspect ratio on the second surface.

Abstract: An optical apparatus includes plural optical lens groups with a specified field of view and an optical sensor accommodated and fixed within a casing. After a light beam passes through any of the plural optical lens groups, its travelling direction is changed, and it is sensed by the optical sensor and converted into an image signal by the optical sensor. The optical apparatus has a single optical lens module of minimized volume and is able to implement different optical functions simultaneously. Consequently, the fabricating cost of the optical apparatus is reduced, the assembling process is simplified, and the number of components to be assembled is reduced.

Abstract: An electronic apparatus wearable for a user and a display control method thereof are provided. The electronic apparatus includes an interactive display device, a supplementary input device and a processor device. The interactive display device displays a user interface. The processor device coupled to the interactive display device and the supplementary input device detects a clockwise movement and a counter-clockwise movement performed on the supplementary input device, wherein the clockwise movement and the counter-clockwise movement are associated with a function under an operation mode of the electronic apparatus. When one of the clockwise movement and the counter-clockwise movement is detected, the processor device correspondingly performs is the function. When the function is an interface rotation function, the processor device rotates the user interface on the interactive display device in accordance with the detected clockwise movement and the detected counter-clockwise movement.

Abstract: In ellipsometer and polarimeter systems, reflective optics including both convex and a concave mirrors that have beam reflecting surfaces, as well as aperture control of beam size to optimize operation with respect to aberration and diffraction effects while achieve the focusing of a beam of electromagnetic radiation with minimized effects on a polarization state of an input beam state of polarization that results from adjustment of angles of incidence and reflections from the various mirrors involved, and further including detectors of electromagnetic radiation that enable optimization of the operation thereof for application over various specific wavelength ranges, involving functional combinations of gratings and/or combination dichroic beam splitter-prisms, which themselves can be optimized as regards wavelength dispersion characteristics.

Abstract: A multi-core fiber performs communication using light up to an xth-order LP mode (where x is an integer of 1 or more) in a communication band. The multi-core fiber includes: a plurality of signal light propagation cores that propagate light up to an (x+1)th-order LP mode; and at least one high-loss core that has a higher loss of propagated light than the signal light propagation cores. Crosstalk occurs between light of the (x+1)th-order LP mode propagated through at least one signal light propagation core and light of a primary LP mode propagated through at least one high-loss core.

Abstract: In a multi-panel display device in which plural individual display devices are joined, it is possible to guarantee image continuity in panel junction areas of the multi-panel display device by disposing a frame-type optical member, which includes a frame section having plural optical fibers and a central light-transmitting area, on the front surface of the multi-panel display device and optimizing structures of an inner inclined surface of the frame section of the frame-type optical member and optical fibers included in the frame section.

Abstract: A digital bezel of a display device includes: a display device including a bezel region for displaying an image different from an effective screen by dividing a frame portion of an effective screen of the display device; and an optical pick-up member, mounted in the bezel region, for picking up an image displayed in the bezel region in a straight line by a predetermined thickness to three-dimensionally highlight the image. As such, the three-dimensional effect of the image can be emphasized and manufacturing costs can be reduced.

Abstract: A combination of a focusing element, and a filtering element which naturally adjusts the cross-sectional area of a beam of electromagnetic radiation passed through the focusing element as a function of wavelength over a specified range of wavelengths, wherein the filtering element is not uniform, but rather varies as a selection from the group consisting of: optical density and/or thickness is greatest near the center thereof; and optical density and/or thickness is smallest near the center thereof; and can demonstrate neutral density characteristics outside the specified range of wavelengths. The combination of a focusing element, and a filtering element can optionally be present in an ellipsometer or polarimeter system.

Abstract: In a plate-type optical member for a multi-panel display device in which a plurality of individual display devices are joined and which includes junction area in which non-active areas of the individual display devices are arranged, the plate-type optical member includes plural optical fibers that have input ends opened to the lower part of the plate-type optical member and output ends opened to the upper part of the plate-type optical member and a resin support that supports the optical fibers. It is possible to guarantee image continuity in panel junction areas by disposing the plate-type optical member on the front surface of the multi-panel display device.

Abstract: Multicore optical fibers are disclosed that have randomly arranged cores within a cladding matrix. In some cases, the cores are defined by air lines formed in a glass matrix. The cores can have an edge-to-edge spacing designed so that the multicore optical fiber operates in either a weak-coupling regime or a strong-coupling regime. Imaging systems and optical fiber communication systems that utilize the multicore fibers disclosed here are also presented.

Abstract: A method of applying a reflective optics system that requires the presence of both convex and a concave mirrors that have beam reflecting surfaces. Application thereof achieves focusing of a beam of electromagnetic radiation with minimized effects on a polarization state of an input beam state of polarization that results from adjustment of angles of incidence and reflections from the various mirrors involved.

Abstract: A multicore optical fiber that includes seventeen cores arranged in a hexagonally close-packed configuration, each core having a core center and comprising silica and an up-dopant; and a cladding region surrounding the seventeen cores, the cladding region having a cladding edge, an outer diameter, and a cladding composition comprising silica. The outer diameter of the cladding region is between about 100 microns and 150 microns. Further, the hexagonally close-packed configuration has bi-lateral symmetry to accommodate bi-directional data flow within the fiber.

Abstract: A reflective optics system that requires the presence of both convex and a concave mirrors that have beam reflecting surfaces. Application thereof achieves focusing of a beam of electromagnetic radiation with minimized effects on a polarization state of an input beam state of polarization that results from adjustment of angles of incidence and reflections from the various mirrors involved. This invention is also a combination of a focusing element and a filtering element that provides an optimum electromagnetic beam cross-sectional area based on optimizing the beam cross-sectional area in view of conflicting effects of aberration and diffraction inherent in said focusing element, which, for each wavelength, vary oppositely to one another with electromagnetic beam cross-sectional area.

Abstract: An illuminated display contained within a translucent container that employs flat fiber optic material as the primary illuminated design. When this material is illuminated at its base edge and the illumination is optionally programmed, light then travels to and is emitted all along its cut top edge, resulting in a clear “line of light” display that appears to exist in space, unattached from any other material and evokes a specific desired effect within the translucent container, including the effect of a specific ephemeral phenomenon. The illuminated display effect is often strengthened by adding one or more additional displays to the translucent container.

Abstract: A vehicle display device includes an image processing electronic control unit that converts a portion of each image of plural images into respective strip images in which plural pixels are arrayed along a direction of vehicle travel; an optical fiber woven fabric in which plural optical fibers are woven, with end portions of the plural optical fibers arrayed along the direction of vehicle travel; and plural light sources arrayed such that light emitted from each of the plural light sources is incident at an end portion of at least one of the optical fibers; wherein the image processing electronic control unit controls the plural light sources for each of the strip images so as to emit light according to a pixel value of each pixel in the strip images.

Abstract: A centralizer assembly includes a centralizer configured to centralize a tubular in a wellbore. The centralizer includes a first end collar, a second end collar, and ribs extending between the first and second end collars. The assembly also includes a first stop collar disposed adjacent the first end collar and including an anchor. The anchor defines a generally rectangular anchor window extending therethrough. The anchor is configured to bear on an anchoring material secured to the tubular and received through the anchor window. The anchor material includes a thermal spray applied to the tubular. The first end collar is prevented from rotation with respect to the first stop collar.

Abstract: A method for manufacturing a display includes providing a plurality of light guiding fibers or other elements extending out from a display screen. The light guiding elements are in a matrix to form a first light guiding body forming a strip along the edges of each individual display screen. The first light guiding bodies form a compensating portion of an image compensating apparatus, a cross-sectional area of each light guiding element increasing from light-collecting end (closest to the display screen) to opposite light-releasing end. The compensating portion includes a light incident surface and a light emitting surface.

Abstract: An optical waveguide body includes a first layer of optically transmissive material and a second layer of optically transmissive material in contact with the first layer. At least one of the first and second layers is tapered and the first layer has a first index of refraction and the second layer has a second index of refraction less than the first index of refraction and the first and second indices of refraction are both greater than about 1.0.

Abstract: Optical coherence tomography imaging systems and methods are disclosed. According to an aspect, an optical coherence tomography imaging system includes a scanner configured to obtain images and to convert the images to electrical signals. The system also includes a computing device comprising an OCT module configured to receive the electrical signals, to apply an OCT imaging technique, and to generate imaging data.

Abstract: An optical waveguide, such as an optical fiber, which relies on a mechanism involving scattering in random structures to confine light to a region of the waveguide and allow propagation of electromagnetic radiation along the length of the waveguide includes an optically transmissive body having a length and a cross-section transverse to the length, wherein the optically transmissive body has refractive indices that are cross-sectionally random and substantially invariant along the length direction of the waveguide.

Abstract: Multimode beam combiners include at least one gradient-step index optical fiber in which a refractive index difference at a core/cladding interface is selected to provide a numerical aperture so as to provide stable, uniform beam output. One or more such fibers is formed into a tapered bundle than can be shaped to provide a selected illuminated aperture. The fibers in the bundle can be separated by respective tapered claddings so as to be optically coupled or uncoupled. Illumination systems can include a plurality of such fibers coupled to a plurality of laser diodes or other light sources.

Abstract: Disclosed is an optical valve or light valve for providing large area collimated illumination from localized light sources, and system and method thereof for 2D, 3D, and/or autosteroscopic displays. An optical valve may include a stepped structure, in which the steps include separated extraction features which may be optically hidden to light propagating in a first direction. Light propagating in a second direction may be refracted, diffracted, or reflected by the features to provide illumination beams exiting from the top surface of the optical valve. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality.

Abstract: A plurality of cores 51 is disposed around the center axis of a first cladding 52 in a state in which an inter-core distance ? of cores adjacent to each other is equal, a refractive index n1 of the core 51 is provided higher than a refractive index n2 of the first cladding 52, and the refractive index n2 of the first cladding 52 is provided higher than a refractive index n3 of a second cladding 53. Moreover, 5.8??/MFD(2?c/(?c+?op))?8 is satisfied, where the inter-core distance is defined as ?, a mode field diameter of the core is defined as MFD, a cutoff wavelength is defined as ?c, and a wavelength of communication light incident on the core 51 is defined as ?op.

Abstract: An apparatus for compensating an image of a display includes a light incident surface, a light emitting surface, and a plurality of light guiding channels. An area of the light emitting surface is greater than an area of the light incident surface. The plurality of light guiding channels are independent from each other, each light guiding channel extends from the light incident surface to the light emitting surface. A cross section area of the light guiding channel increases along a direction from the first light incident surface to the first light emitting surface. Light from the light incident surface is extended to the light emitting surface by the light guiding channels. The present invention further discloses a method for manufacturing the same.

Abstract: A display may have an array of display pixels that generate an image. A coherent fiber bundle may be mounted on the display pixels. The coherent fiber bundle may have a first surface that is adjacent to the display pixels and a second surface that is visible to a viewer. The coherent fiber bundle may contain fibers that carry light from the first surface to the second surface. The second surface may be planar or may have a central planar region and curved edge regions that run along opposing sides of the central planar region. The fibers may have cross-sectional surface areas with a first aspect ratio on the first surface and a second aspect ratio that is greater than the first aspect ratio on the second surface.

Abstract: An applicator suitable for converting a white-light endoscope into an endoscope for combined white-light/fluorescence imaging is disclosed. The applicator facilitates attachment of an optical element, for example an optical filter, to a distal optical port of an endoscope. The applicator engages with alignment feature on the endoscope's distal end and releasably supports the optical element in an opening that is aligned with the optical port. The optical element is released in a proximal direction by pressing down on an actuator.

Abstract: A light conductor having a bundle of optic fibers to transmit light, and a method for bending the light conductor made up of optic fibers. The light conductor with a bundle of optic fibers to transmit light of a light source, which can be coupled onto a first end portion of the light conductor, to a second end portion of the light conductor, includes a first portion and a curved second portion configured as a connecting portion, where the optic fibers in the second portion are fixed in place with respect to one another, free of tension, by means of a hardened cementing agent, while maintaining the curvature.

Abstract: A display tile includes a display panel and a fused fiber bundle overlay. The display panel includes display pixels and a bezel surrounding the display pixels. The fused fiber bundle overlay includes an input side mounted adjacent to the display panel and optically aligned with the display pixels to receive image light, an emission side opposite the input side to emit the image light, and an array of fused fibers each extending from the input side to the emission side and each including an input end and an emission end. At least a portion of the fused fibers are tapered.

Abstract: A display assembly includes a display selectively displaying human-readable indicia on a face thereof and a cover disposed over the display. The cover has a homogeneous surface over the entire face of the display. The display assembly is controllable between an inactive state and an active state. In the inactive state, the face of the display is not viewable through the cover, and in the active state, the indicia are viewable through the cover.

Abstract: This document discusses, among other things, a connector for an optical imaging probe that includes one or more optical fibers communicating light along the catheter. The device may use multiple sections for simpler manufacturing and ease of assembly during a medical procedure. Light energy to and from a distal minimally-invasive portion of the probe is coupled by the connector to external diagnostic or analytical instrumentation through an external instrumentation lead. Certain examples provide a self-aligning two-section optical catheter with beveled ends, which is formed by separating an optical cable assembly. Techniques for improving light coupling include using a lens between instrumentation lead and probe portions. Techniques for improving the mechanical alignment of a multi-optical fiber catheter include using a stop or a guide.

Abstract: The present invention aims at mitigating a light guide member being peeled off and a display panel being damaged by stress exerted on an adhesive section or the like between the light guide members. A multi-display system has a plurality of display devices (100) arranged in a matrix such that a cushioning member (310) is arranged alongside a light guide member (150) and between the respective light guide members (150) of two of the adjacent display devices (100) among the plurality of display devices (100).

Abstract: LED printhead apparatus and printing systems are presented in which an LED array and a first high angle lens array are housed in an LED printbar assembly and a second low angle lens array is provided between the first lens array and a photoreceptor belt or drum in order to relay the output of the first lens array to the photoreceptor to provide a larger depth of focus and to reduce waterfront and tolerance issues near the photoreceptor.

Abstract: According to one embodiment, a pixel detecting light having the longest wavelength in a picture element includes a protective film which is disposed on a photodiode at a surface side facing a light incident surface of a semiconductor substrate and a first diffraction grating portion which is disposed on the protective film and where columnar holes penetrating in a thickness direction are two-dimensionally arrayed. Diameter and array period of the holes are selected so that the first diffraction grating portion reflects light transmitting through a filter disposed on the pixel.

Abstract: A coupling device for an optical fiber used in optical tomography examination of a medium includes a mass of diffusing material for a wavelength guided by the optical fiber. This mass includes a bearing surface to be applied against the surface of the medium. At least one housing is provided in the mass to receive the end of the optical fiber.

Abstract: Some implementations described herein involve defining a viewing angle range, also referred to herein as a viewing cone. The viewing cone may be produced by an array of optical fibers on a display. The optical fiber array may include tapered optical fibers that are capable of increasing the amount of light transmitted through the optical fiber array. The optical fiber array may be a graded index optical fiber array, wherein the refractive index of the optical fiber cores varies along the axis of the optical fibers.