Abstract: An optical fiber having a large mode area for high power applications and geometrically configured for single-mode operation. One example of an optical fiber system includes a mandrill and an optical fiber helically coiled about the mandrill with a preselected bend radius. The optical fiber includes a core having a high aspect ratio elongated cross-section, wherein the core is narrower in a fast-axis direction and wider in a slow-axis direction, the core including an annular protrusion that is Gaussian in transverse cross-section and has a width in the slow-axis direction and an annular extension in the fast-axis direction, and wherein a ratio of the width, the annular extension, and the bend radius is selected for single-mode operation of the optical fiber.

Abstract: An optical module includes: a substrate; a wiring pattern; and a cover material. The wiring pattern includes, on the substrate, an electrode portion having a predetermined width and a signal line having a width smaller than the predetermined width and connected to the electrode portion. The cover material covers a part of the electrode portion and the signal line.

Abstract: The present invention provides a method of inputting light into a core layer of a multimode optical waveguide. The optical waveguide includes an under-cladding layer; and the core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer. The method includes inputting the light into the core layer so that a spot of the light at an input port-side end surface of the multimode optical waveguide completely includes an input port of the core layer; a spot area of the light at the input port-side end surface of the multimode optical waveguide is twice or more of an area of the input port of the core layer; and an angle of input range of the light at an input port end surface of the core layer is from 10° to 30°.

Abstract: A low index of refraction hybrid optical cladding may be formed from a fluorinated sol-gel. An electro-optic device may include a poled organic chromophore-loaded modulation layer (electro-optic polymer) and at least one adjacent fluorinated hybrid sol-gel cladding layer.

Abstract: The present invention relates to a dry film for an optical waveguide which has a carrier base material, a resin layer for an optical waveguide that can be cured by active energy ray or heat, and a protective film. The surface of the protective film that is in contact with the resin layer for an optical waveguide is a roughened surface.

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: A method is disclosed to provide improved fiber inline optical power monitoring that eliminates the need for micro-bending the fiber or for fabricating micro-reflector on the fiber. A subset of light is tapped through an offset at a fusion-spliced upstream and downstream optic fiber, and is guided out of the downstream fiber by a light guide to a reflector and photo-sensing measurement. The disclosed inline fiber monitoring is thus cost effective, wavelength independence, reliable, stable, and also causes less light transmission loss.

Abstract: A method comprises exposing the surface of an optical microcavity characterized by at least one resonance frequency to a sample such that a single particle or molecule from the sample adsorbs onto the surface of the microcavity; evanescently coupling a probe laser beam into the microcavity, the wavelength of the probe laser beam substantially matching the at least one resonance frequency; illuminating the surface of the microcavity with a free space pump light beam and moving the focal spot of the free space pump light beam such that the focal spot substantially overlaps with the single particle/molecule; and detecting light from the probe laser beam. The wavelength of the free space pump light beam generates sufficient heat via energy absorbed by the single particle/molecule to induce a shift in the at least one resonance frequency, thereby providing a change in an optical characteristic of the detected light.

Abstract: A fiber patch cord apparatus and a port panel, which may simplify a structure of the fiber patch cord system. The fiber patch cord apparatus includes a crawler configured to move to a corresponding position of a source adapter port along a crawling guide rail provided by a port panel, a clamper configured to clamp a fiber patch cord on the source adapter port, and a puller and inserter configured to pull the fiber patch cord out of the source adapter port and a controller that is configured to control the fiber patch cord apparatus to move on a crawling guide rail, where the controller is further configured to control a mold strip group on the port panel to move. The embodiments of the present invention are used to pull and insert a fiber patch cord.

Abstract: A pre-terminated distribution module is provided with a set of multicore fiber (MCF) connector adapters at its front end and a set of multifiber MCF connector adapters at a second end. The MCF connector adapters and multifiber MCF connector adapters are connected to each other within the module housing by means of an MCF fanout. The MCF connector adapters are configured to provide core-aligned connection for MCF jumper cables that are plugged into the front end of the module. The MCF jumper cables are configured to provide connectivity to an array of optical devices. The multifiber connector adapters are configured to provide core-aligned connectivity for multifiber MCF cables that are plugged into the back end of the module. The multifiber cables are configured to provide connectivity between the module and a trunk (backbone) cable. Further described are pre-terminated trunk (backbone) cables and pre-terminated fiber optic jumper cables (i.e., patchcords).

Abstract: A plug-side optical connector, including: a plug-side coupling mechanism and a ferrule. The plug-side coupling mechanism is to be coupled to a coupling mechanism of another optical connector, the other optical connector being on receptacle side and being for being coupled with the plug-side optical connector. The plug-side coupling mechanism includes: a reference section to which the coupling mechanism of the other receptacle-side optical connector is to be hooked; and an inserted section that is to be inserted into a cylindrical main body of the coupling mechanism on the receptacle side. The ferrule is accommodated inside the inserted section. When a direction in which the optical connector is attached or detached is defined as a front-rear direction and a side of the receptacle-side optical connector is defined as front, a distance in the front-rear direction from the reference section to a front edge of the inserted section is 7.0 mm or more.

Abstract: An optical alignment system for aligning an optical component is provided. The system includes an alignment component configured to be moveable in a plane and in a fixed relationship with the optical component. Typically the alignment component houses an optical fiber MT ferrule. One or more driving components are further provided typically in the form of a ball headed adjustment screw. The driving components are configured to be moveable, relative to the alignment component, in a first linear direction. At least a component of the first linear direction is parallel with the normal of the plane. The driving component, when forced along the first linear direction and in contact with the alignment component, imparts a force upon the alignment component, in the plane, to move the optical component in the plane. An alignment frame accommodating the driving components may also be provided.

Abstract: An optical fiber cable has a sectional area of Ac [?m2] and housing a number N of optical fibers. A transmission loss ?dB [dB/km], a mode field diameter W [?m], an effective area Aeff [?m2], an effective length Leff [km], and a wavelength dispersion D [ps/nm/km] of each of the optical fibers at a wavelength of 1550 nm satisfy a predetermined equation.

Abstract: An optical device includes a light guiding member that guides light an optical element that functions by being irradiated with the light guided by the light guiding member and a holding member that internally includes a first housing portion housing the light guiding member and a second housing portion housing the optical element and internally holds the light guiding member and the optical element by the first housing portion and the second housing portion so that the light guiding member and the optical element are internally coupled optically. The first housing portion and the second housing portion are communicatively connected inside the holding member and the light guiding member housed in the first housing portion and the optical element housed in the second housing portion are in contact with each other inside the holding member.

Abstract: The present invention relates to a modular breakout device providing optical and/or electrical connection interfaces in each modular unit. The exemplary breakout device includes a housing made up of a plurality of individual compartments stacked upon each other and a cover that is attachable to the housing. The plurality of individual compartments includes a base compartment configured with a port though a wall of the base compartment that is configured to accept optical and/or electrical transmission media and a first furcation tray. The first furcation tray is disposed on top of the base compartment and the cover is disposed on top of the first furcation tray to enclose the housing. In one exemplary aspect, the breakout device has an optical connection interface and an electrical connection interface disposed in a side wall of the first furcation tray.

Abstract: A fiber optic telecommunications device has a first fiber optic adapter, a spool, and a fiber optic cable wrapped around the spool. The fiber optic cable includes a first optical fiber. A first fiber optic connector is mounted at a first end of the first optical fiber. The first end of the first fiber optic connector is inserted within the first fiber optic adapter. The first fiber optic adapter and the spool is configured to rotate in unison about a common axis when the fiber optic cable is unwound from the spool.

Abstract: A blowing head for installing blown cable, comprising a low-inertia motor using electrical current, operable to obtain the advance of the cable within the blowing head, adjusting means operable to vary the level of current of the motor, and low-inertia sensing means to sense movement and changes in the level of movement of the cable within the blowing head, wherein in use the adjusting means varies the level of current used by the motor in response to changes in the level of movement sensed by the sensing means, and wherein the varying level of current does not exceed a maximum current level.

Abstract: A fiber optic cassette including a body defining a front and an opposite rear and an enclosed interior. A cable entry location is defined in the body for a cable to enter the interior of the cassette. The cable which enters at the cable entry location is attached to the cassette body and the fibers are extended into the cassette body and form terminations at connectors. The connectors are connected to adapters located at the front of the cassette. A front side of the adapters defines termination locations for cables to be connected to the fibers connected at the rear of the adapters. A cable including a jacket, a strength member, and fibers enters the cassette. The strength member is crimped to a crimp tube and is mounted to the cassette body, allowing the fibers to extend past the crimp tube into the interior of the cassette body. A strain relief boot is provided at the cable entry location.

Abstract: An integral fan-out connector assembly for fiber optic cables includes a connector housing that provides an integrated fan-out housing and connection adapter. The fan-out connector housing may be configured with a variety of cable adapters, and may be installed as a ‘plug and play’ type solution where it will be ready to accept a feed cable for use when needed.

Abstract: An optical fiber assembly of the present invention is configured such that an optical fiber fixing section (i) is fixed to an SUS tube and (ii) sandwiches an optical fiber between a first member and a second member at an end part of the SUS tube, so that the optical fiber is fixed while being spaced from the SUS tube. This makes it possible to provide an optical fiber assembly having a structure that prevents an optical fiber from coming into contact with an edge part of a metal tube on the premise that the optical fiber is covered with the metal tube.

Abstract: A method for determining the depth of field for a specific distance by means of measuring optics comprises manual optical focussing of the measuring optics by means of the human eye without projection onto a focussing screen or intermediate projection surface, monitoring of the movement of the measuring optics mechanism during focussing, determining and indicating the adjusted distance from the movement, wherein, with consideration of focal distance, aperture, hyperfocal distance and circle of confusion, the range of the depth of field to the adjusted distance is arithmetically determined and indicated.

Abstract: An optical imaging lens includes a first, second, third and fourth lens element, and an aperture stop positioned between the second and third lens elements. The first lens element has an object-side surface with a convex portion in a vicinity of its periphery, the second lens element has an image-side surface with a concave portion in a vicinity of the optical axis, the third lens element has an image-side surface with a convex portion in a vicinity of the optical axis, the fourth lens element is made of plastic and has an object-side surface with a concave portion in a vicinity of the optical axis, and the optical imaging lens set does not include any lens element with refractive power other than said first, second, third and fourth lens elements.

Abstract: An optical imaging lens includes: a first, second, third, fourth, fifth and sixth lens element, the first lens element has an object-side surface with a convex part in a vicinity of the optical axis, and a convex part in a vicinity of its periphery, the second lens element has an image-side surface with a concave part in a vicinity of its periphery, the third lens element has an image-side surface with a convex part in a vicinity of its periphery, the fourth lens has an object-side surface with a concave part in a vicinity of its periphery, the fifth lens element has an object-side surface with a concave part in a vicinity of the optical axis, the sixth lens element has an image-side surface with a concave part in a vicinity of the optical axis, and a convex part in a vicinity of its periphery.

Abstract: A compact low-profile low-cost imaging lens with an F-value of 2.5 or less and a wide field of view which corrects aberrations properly. Its elements are arranged from an object side: a first positive optical element group including a first positive lens having a convex object-side surface and a second negative lens having a concave image-side surface; a second positive optical element group including a third positive lens having a convex image-side surface; and a third negative optical element group including a fourth negative double-sided aspheric lens having a concave image-side surface and a fifth double-sided aspheric lens having a concave object-side surface. The fourth lens image-side surface has at least one pole-change point off an optical axis. A double-sided aspheric aberration correction optical element with virtually no refractive power is located in an air gap between the first and second optical element groups.

Abstract: An imaging lens includes first to sixth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.

Abstract: Provided is a zoom lens, comprising, in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a negative refractive power; and a fourth lens unit having a positive refractive power. The second lens unit and the third lens unit are configured to move along loci different from each other during zooming. At least one lens unit of the first lens unit, the second lens unit, the third lens unit, or the fourth lens unit includes a positive lens and a negative lens that are arranged adjacent to each other, and materials for the positive lens and the negative lens are appropriately set, respectively.

Abstract: A compact imaging lens suitable for a high pixel density image pickup device which properly corrects chromatic aberration and other types of aberrations and ensures high image quality, low f-number, and low cost. A first lens, second lens, third lens, fourth lens, and fifth lens are arranged in order from the object side and both sides of all the lenses are aspheric surfaces and a diffractive optical surface with a chromatic aberration correction function is formed on one of the surfaces from the object side surface of the first lens to the object side surface of the second lens and on one of the surfaces from the object side surface of the third lens to the object side surface of the fifth lens. All the lenses are made of a plastic material.

Abstract: A zoom lens consists of, in order from the object side, a positive first lens group, a negative second lens group, a negative third lens group, a negative fourth lens group, a positive fifth lens group, and a positive sixth lens group. The first lens group and the sixth lens group are fixed with respect to an image plane, and a distance between the first lens group and the second lens group increases, a distance between the second lens group and the third lens group changes, and a distance between the third lens group and the fourth lens group changes, and a distance between the fourth lens group and the fifth lens group changes, and a distance between the fifth lens group and the sixth lens group changes during magnification change from a wide angle end to a telephoto end.

Abstract: Provided is a zoom optical system which includes, in order from an object, a first lens group having negative refractive power and other lens groups, and in which an interval between each lens group changes upon zooming, wherein the first lens group includes a first negative lens which is disposed closest to the object and has a diffractive optical element on an image side lens surface, and a positive lens disposed closer to the image than the first negative lens, and the glass material used for the positive lens satisfies the following conditions expressions: ?1p?35 and ?(?g, F)?0.

Abstract: In order to realize a high-speed switching of structured pattern, a structured illuminating microscopy includes a driving unit generating a sonic standing wave in a sonic wave propagation path by giving a driving signal for vibrating a medium of the sonic wave propagation path to a light modulator, an illuminating optical system making at least three diffracted components of the exit light flux passed through the sonic wave propagation path to be interfered with one another, and forming interference fringes on an observational object, an image-forming optical system forming an image by an observational light flux from the observational object on a detector, and a controlling unit controlling a contrast of an image by modulating at least one of an intensity of the exit light flux, an intensity of the observational light flux, and the detector with a modulating signal of 1/N frequency of the driving signal.

Abstract: A microscope system includes a sample tray to hold a plurality of samples to be imaged in parallel. An illumination source generates illumination light and a plurality of spatial light modulators are each positioned to spatially modulate the illumination light onto a corresponding one of the samples. Relay optics are positioned in an optical path between the sample tray and the plurality of spatial light modulators to image the samples onto the plurality of spatial light modulators. A plurality of first cameras is positioned to capture images in parallel of the samples in the sample tray by imaging the plurality of spatial light modulators.

Abstract: Systems, methods, and media for assessing the quality of a microscope slide image. In an embodiment, a plurality of focus point values are acquired for a sample on a microscope slide. Each focus point value comprises x-y coordinates indicating a location on the sample and a z coordinate indicating a focus height for the location on the sample. A best-fit surface is calculated based on the focus point values, and it is determined whether or not outlying focus point values exist based on the best-fit surface and the z coordinate for one or more of the focus point values. A scanned image of the microscope slide may be displayed which comprises, for each outlying focus point value, an overlay that identifies the location on the sample of the outlying focus point value based on the x-y coordinates for the outlying focus point value.

Abstract: A method is provided for emulating the imaging of a scanner mask pattern to expose wafers via a mask inspection microscope, in which the mask was corrected by introducing scattering centers. The method includes determining a correlation between the first values of at least one characteristic of aerial images of the mask pattern as produced by a mask inspection microscope and the second values of the at least one characteristic of aerial images of the mask pattern as produced by a scanner, recording a first aerial image of the mask pattern with the mask inspection microscope, determining the first values of the at least one characteristic from the first aerial image, and determining the second values of the at least one characteristic of the first aerial image, using the correlation. A mask inspection microscope is also provided for emulating the imaging of a mask pattern of a scanner to expose wafers, in which the mask was corrected by introducing scattering centers.

Abstract: In one example a method of deceiving an optical augmentation device includes receiving an interrogation beam at an optical system from the optical augmentation device, encoding the interrogation beam with a false signature mis-identifying the optical system, and retro-reflecting the encoded interrogation beam to the optical augmentation device, without retro-reflecting the original interrogation beam.

Abstract: Six first holes into which lead pins of a first semiconductor laser are inserted are arranged to form a parallelogram having line segments each connecting two first holes arranged in an X direction as first short sides, and line segments each connecting three first holes arranged in an intersecting direction intersecting with the X direction as first long sides. Six second holes into which lead pins of a second semiconductor laser are inserted are arranged to form a parallelogram having line segments each connecting two second holes arranged in the X direction as second short sides, and line segments each connecting three second holes arranged in the intersecting direction intersecting with the X direction as second long sides.

Abstract: Interferometric focusing (IF), rather than conventional geometric focusing, of excitation light onto a guide-star that is embedded deeply in tissue, increases its fluorescence intensity. The method can extend the depth of wavefront measurement and improve correction inside of tissues because of its ability to suppress both scattering of diffuse light and aberration of ballistic light. The results showed more than two times improvement in SNR and RMS error of the wavefront measurement. Although only ballistic light in the excitation path is corrected, the intensity after wavefront correction increased by 1.5 times. When applying IF to a two-photon microscope with a near infra-red laser, this method would further extend the measurement depth and achieve high SNR for the wavefront sensor.

Abstract: An image capturing device includes: a display section attached to a head or a face of a user, and configured to display an image; a communication section configured to communicate with an external device; an image capturing section; a positional information acquisition section configured to acquire current positional information of the user; and a control section configured to capture an image of a dangerous place by the image capturing section in accordance with determination of a dangerous state, and transmit a captured image from the communication section to the external device together with the positional information acquired by the positional information acquisition section.

Abstract: A trapezoidal correction processing portion performs trapezoidal correction (distortion correction) on video image areas each of which is divided into a plurality of video image areas separately in accordance with the divided video image areas. In this case, each of the video image areas is divided into a plurality of areas. Further, a pair of right and left virtual image formation sections perform trapezoidal correction in a mirror symmetric manner, and the center position of the wearer's eye in each of the virtual image formation sections is so adjusted that the center position coincides with a distortion-free image corrected by using a small amount of correction.

Abstract: A head mounted display (HMD) device according to one embodiment comprises a communication unit configured to transmit and receive data; a display unit configured to display visual information; a camera unit configured to capture an image; and a processor configured to control the communication unit, the display unit and the camera unit, wherein the processor is further configured to: detect an object image from a first image, which includes the object image, the first image being displayed in an external device located in an angle of view area of the camera unit, display information related to the object image, and display the first image in addition to the information when detecting that the first image is switched to a second image, which does not include the object image.

Abstract: An HMD apparatus with an imaging optical system for each one of the eyes of a user, which includes at least one display unit to be viewed by the respective eye, and with a device for the acquisition of the viewing direction of at least one eye within a field of view of the display unit by means of an eye camera, wherein the eye camera is provided with a camera holder, which can be adjusted in terms of a peripheral angle around a viewing central axis of the field of view and in terms of a setting angle with respect to the viewing central axis.

Abstract: A virtual image display apparatus includes a video image display element which generates video image light, a light guiding member which includes a plurality of optical surfaces and guides the video image light by reflecting on inner surface side, and an optical device portion such as a projector lens through which the video image light passes when the video image light is made to foe incident on the light guiding member. Here, the light guiding member is a block-shaped member including a pair of facing first and third surfaces which extend substantially in parallel with each other and fully reflect the video image light, and first reference optical axis of the optical device portion on a light emitting side extends in a direction in which the first reference optical axis forms an obtuse angle with respect to a traverse reference axis corresponding to an eye alignment direction.

Abstract: A display system comprises an optical waveguide and a light engine. The light engine generates multiple input beams which form a virtual image. An incoupling grating of the waveguide couples each beam into an intermediate grating of the waveguide, in which that beam is guided onto multiple splitting regions. The intermediate grating, formed by modulations on a first surface of the waveguide, splits that beam at the splitting regions to provide multiple substantially parallel versions of that beam. Those multiple versions are coupled into an exit grating of the waveguide, in which the multiple versions are guided onto multiple exit regions. The exit grating diffracts the multiple versions of that beam outwardly. The multiple input beams thus cause multiple exit beams to exit the waveguide which form a version of the virtual image. A polarization state of each beam interacting with the modulations is controlled by a retarder film.

Abstract: A headset for virtual reality applications includes an array of light emitting diodes (LEDs) emitting light captured by a camera included in a virtual reality system, allowing the virtual reality system to detect the position and orientation of the headset in three-dimensional space. To manufacture the headset, a flexible strip including a circuit having the LEDs is molded into an outer shell of the headset using a casting material that is transmissible to wavelengths of light transmitted by the LEDs. An interior surface of the outer shell of the headset is within a specified distance of the LEDs. The outer shell may also include fabric that is also molded into the outer shell in the same or in a similar process.

Abstract: An autostereoscopic projection device comprises a light source providing a light, a light scanning module, a light transmitting module, a light combining module including a first light combining element, a spatial light modulator module including a first spatial light modulator element, and a lens. The light scanning module includes a reflective surface and an actuating device capable of deflecting the reflective surface. The normal vector of an incident surface of the first light combining element is coplanar with the normal vector of a reflective surface of the first spatial light modulator element, and the coplanar plane is perpendicular to a disposition plane of the projection device. The light provided by the light source module is transmitted through the light scanning module, the light transmitting module, the light combining module and the spatial light modulator module sequentially and then leaves the projection device through the lens.

Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, polarizing beam splitters and systems with such beam splitters that incorporate multilayer optical films and reflect imaged light towards a viewer or viewing screen with high effective resolution are described.

Abstract: A collimator unit includes an on-axis collimator tube fixedly attached to at least two off-axis collimator tubes. The off-axis collimator tubes are angled relative to the on-axis collimator tube. Each collimator tube can include a lens, a light source, and a target placed at the lens' focal point. The collimator tubes can be positioned within a housing such that the on-axis collimator tube is coaxial and centered with respect to the housing.

Abstract: Methods and systems for correcting chromatic aberrations in a telescope incorporating a diffractive primary optical element are provided. In particular, a corrective optic assembly that includes a corrector diffractive optical element (DOE) is described. The corrective optic assembly provides light to the corrector DOE at a high incidence angle. Moreover, light is reflected from the corrector DOE at a high exit angle comprising a cylindrical Littrow configuration allowing for greater bandwidth and smaller size.

Abstract: An optical unit may include a movable body holding an optical element; a fixed body surrounding the movable body; a plate-shaped spring member with a fixed body side connection part, a movable body side connection part, and an arm part which connects the fixed body side connection part with the movable body side connection part; and a drive mechanism to displace the movable body. The cover may be provided with a side plate part. The fixed body side connection part may include a frame part; and a plurality of protruded parts protruded from the frame part. The protruded parts may be separately provided from each other for every welding portion and an entire tip end side of the protruded part is formed as a melted part by welding.

Abstract: A camera system includes an interchangeable lens including an image-pickup optical system, a camera body including an image sensor, and an adapter attached between the interchangeable lens and the camera body. The adapter includes a lens side mount to which the interchangeable lens is detachably attached, a camera side mount detachably attached to the camera body, and a tilt-shift unit configured to provide at least one of a tilt operation and a shift operation. A flange focal length of the interchangeable lens is longer than a flange focal length of the camera body. A length of the adapter from the lens side mount to the camera side mount in an optical axis direction is equal to or smaller than a difference between the flange focal length of the interchangeable lens and the flange focal length of the camera body.

Abstract: An eyeglass temple includes a main frame adapted for connection with a lens unit, and an auxiliary cushion frame disposed behind the main frame. The auxiliary cushion frame includes an ear engaging portion, a main connecting portion extending forwardly from the ear engaging portion to connect with the main connecting portion, an abutment portion extending forwardly from the ear engaging portion and adapted to be disposed between the main connecting portion and the wearer's head, and at least one resilient connecting portion connected between the main connecting portion and the abutment portion and adapted for biasing the abutment portion away from the main connecting portion toward the wearer's head.