Abstract: A twinkling suspender mainly includes a main body, main seat and light guiding unit. The main seat is configured on one side of the main body, and has an accepting space and a through hole in communication with the accepting space. The accepting space is configured with at least two light-emitting elements adapted to illuminate toward the through hole and controlled by a control circuit to wink in sequence. The light guiding unit has two light guiding plates pervious to light stacked together, fixed to one side of the main seat and sealing up the through hole. One side of each light guiding plate has staggered decorative patterns and a light incidence face corresponding to the light-emitting element. Whereby, light beams can be scattered into the light guiding plate to form an effect of staggered twinkling of decorative patterns.

Abstract: An optical device includes: multiple cores each including an inner core and an outer core surrounding an outer circumferential surface of the inner core without any gap therebetween; and cladding surrounding an outer circumferential surface of the cores without any gap therebetween and having a refractive index lower than that of the outer core, wherein each of the cores has a tapered portion that is tapered from one side toward the other side thereof in a longitudinal direction, each of the inner cores includes a low-refractive-index portion, and a high-refractive-index portion surrounding an outer circumferential surface of the low-refractive-index portion without any gap therebetween and having a refractive index higher than that of the low-refractive-index portion, and the outer core has a refractive index lower than that of the high-refractive-index portion.

Abstract: A post-assembly wavelength-tuning method for an optical filter provided along an optical fiber mounted under tension in a packaging assembly is provided. The packaging assembly includes at least one packaging component mechanically coupled to the optical fiber and optically accessible from outside of the packaging assembly. The method includes a step of measuring a post-assembly spectral response of the optical filter and determining therefrom a spectral deviation with respect to a target spectral response. The method also includes a step of forming one or more laser-welded zones on the packaging component so as to cause a permanent deformation thereof. The permanent deformation induces a modification in length of the optical fiber, thereby changing the post-assembly spectral response of the optical filter to compensate for the measured spectral deviation.

Abstract: An optical fiber for efficient coupling of optical signals to photonic devices. The glass optical fiber includes a core region, an optional inner cladding region, a depressed index region, and an outer cladding region. The relative refractive index profile of the fiber is designed to provide large effective area and low bending losses at wavelengths of interest for photonic devices. The photonic devices may be silicon photonic devices with an operating wavelength at or near 1310 nm.

Abstract: A photoelectric composite wiring module includes a flexible first substrate including a conductive line and an optical fiber mounted thereon along a longitudinal direction thereof, a second substrate including a recessed portion formed thereon to receive the conductive line and the optical fiber that protrude from an end portion of the first substrate, and an optical device mounted on the second substrate and optically coupled to the optical fiber. The recessed portion includes an opening on a mounting surface side of the second substrate to mount the optical device.

Abstract: Disclosed are structures and methods directed to waveguide structures exhibiting improved device performance including improved attenuation of scattered light and/or transverse magnetic modes. In an illustrative embodiment according to the present disclosure, a rib waveguide structure including a rib overlying a slab waveguide (or superimposed thereon) is constructed wherein the slab waveguide is heavily doped at a distance from the rib which has a very low overlap with rib guided modes. Advantageously, such doping may be of the P-type or of the N-type, and dopants could be any of a number of known ones including—but not limited to—boron, phosphorous, etc.—or others that increase optical propagation loss. As may be appreciated, the doped regions advantageously absorb scattered light which substantially improves the structures' performance.

Abstract: The present invention includes a high-speed, high-saturation power detector (e.g., a photodiode) compatible with a relatively simple monolithic integration process. In particular embodiments, the photodiode includes an intrinsic bulk absorption region, which is grown above a main waveguide core including a number of quantum wells (QWs) that are used as the active region of a phase modulator. The invention also includes methods of fabricating integrated photodiode and waveguide assemblies using a monolithic, simplified process.

Abstract: The present invention is directed to a beam dump which is configured for not increasing a temperature of a laser with which it may be implemented. The beam dump may include an opaque enclosure which is configured for receiving light (ex.—initial light) from a light source (ex.—a frequency-converted laser), said light being delivered through an aperture of the enclosure via one or more connected optical fibers. The received light may be scattered within the enclosure. However, the beam dump is configured for minimizing the amount of light which is back scattered light into the fiber(s). For instance, the amount of back scattered light may be less than 1/1000 of the initial light. Further, the beam dump may be configured for minimizing photocontamination which may be caused when the light contacts interior surfaces of the enclosure. Still further, the beam dump may be a small size, low cost structure.

Abstract: Techniques and systems suitable for performing low-loss fusion splicing of optical waveguide sections are provided. According to some embodiments, multiple laser beams (from one or more laser) may be utilized to uniformly heat a splice region including portions of the optical waveguide sections to be spliced, which may have different cross-sectional dimensions. According to some embodiments, the relative distance of the optical waveguide sections and/or the power of the multiple laser beams may be varied during splicing operations.

Abstract: An optical coupler includes a plurality of tapers, each of the taper-bases arranged substantially in a first plane to form a base of the optical coupler for connecting to a first optical waveguide, and the taper-tips arranged substantially non-overlapping in a second plane corresponding to a coupling facet for coupling with a second optical waveguide. This multi-taper coupler overcomes the energy loss of conventional techniques, allowing optical coupling between a variety of optical devices including optical fibers, waveguides, diodes, and switches. The multi-taper has increased information transmission efficiency, reduced loss of signal strength between coupled products, and is more robust to damage of the coupler, and the coupling area is larger than conventional couplers thereby reducing coupling complexity and increasing coupling probability.

Abstract: A waveguide of a 3D interconnection structure and an optical data bus system of a 3D interconnection structure using the same are provided. The waveguide includes a main waveguide which is formed in a predetermined direction and at least one branch waveguide which connects to the main waveguide to form a predetermined angle, wherein the at least one branch waveguide branches an optical signal, which is propagated in the main waveguide, at a predetermined rate.

Abstract: An optical element includes a multicore optical fiber, the multicore optical fiber including an inner core and at least one peripheral core arranged around the inner core and having an effective refractive index different from that of the inner core, and an optical fiber grating formed at the multicore optical fiber to cause an optical signal to be coupled between different cores among the inner core and the at least one peripheral core. The optical element allows a signal of a specific wavelength to be dropped added from an optical signal. Since the optical element may be fabricated easily, designed in a small size and mass-produced reproducibly at low costs, the optical element may be advantageously utilized for an optical communication network such as a wavelength division multiplexing network, an ultra-high speed optical communication system, an optical sensor system or the like.

Abstract: Fiber optic interface devices (20, 320) for electronic devices (300) are disclosed. A plug-type fiber optic interface (20) has an axially moveable multi-fiber ferrule (100) that supports optical fibers (52) or a combination of optical fibers and gradient-index lenses (600). A resilient member (150) serves to provide the ferrule with forward-bias and rear-bias positions relative to a recessed front end (22) of a housing (21). A fiber optic interface assembly (570) that includes mated plug and receptacle fiber optic interface devices (20, 320) is also disclosed.

Abstract: A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and second ends. The axial passage includes a first diameter portion having a diameter of at least 125 microns, and a second diameter portion having a diameter of at least 250 microns and less than a diameter of the buffer, the second diameter portion positioned between the first diameter and the second end. The axial passage further defines a tapered shape at the second end extending inward from the second end to the second diameter portion. A hub holds the ferrule. A method of assembling a terminated fiber optic cable is also provided.

Abstract: A sleeve for optical communication and method for manufacture for the sleeve for optical communication, for which withdrawal force for ferrules, which are generally used in the technical field of optical communication, or connection loss between ferrules is a predetermined value, and for which manufacturing steps are reduced so as to allow reduction of manufacturing cost. The invention is made by press-molding ceramic feedstock, which after cold isostatic pressing and sintering are performed thereto, and is made so that an inner circumferential surface, of a through-hole for inserting a ferrule formed on the length-direction of the axis, has a sintered state.

Abstract: Lockable connection assemblies including lockable connection components are described. A lockable connection assembly may include an assembly for connecting components in an electrical or communication system, such as a fiber optic communication network. The lockable connection assemblies may include a connector (for example, a plug) and an adapter configured to be connected together, for example, using a bayonet-type connection. The components of the lockable connection assemblies may include elements configured to prevent the connector from unintentionally disconnecting from the adapter. For instance, the connector may include a locking nut configured to engage and lock a coupling nut connected to the adapter from rotating and disconnecting from the adapter.

Abstract: A plurality of connector modules are mounted to a support frame. The connector modules have respective optical connectors to optically connect with respective electronic devices, where the optical connectors are moveable between a retracted position and an extended position. The optical connector of a first of the connector modules is retractable and extendable independently of a second of the connector modules.

Abstract: An optical transceiver for the coherent communication system is disclosed. The optical transceiver follows the standard of the CFP transceiver and installs a wavelength tunable laser diode (LD) as a light source for the optical transmission and a local light for the optical reception; an optical modulator of the Mach-Zehnder type made of dielectric material; and an optical receiver to recover the DP-QPSK optical signal. The housing of the optical transceiver provides a front auxiliary area and a rear auxiliary area to install a slender optical modulator and to bend an inner fiber with a large radius.

Abstract: An optical communication module includes optical-electric conversion units, a coupling lens, and optical fibers. The coupling lens includes a first surface, a top surface, a second surface, first lens units on the first surface, and second lens units on the second surface. Each first lens unit is aligned with an optical-electric conversion unit. The top surface defines blind holes each having a reflection bottom surface. An optical axis of each first lens unit intersects an optical axis of a second lens unit on the reflection bottom surface. Each reflection bottom surface is concentrically aligned with a first lens unit and a second lens unit. Each second lens unit is aligned with an optical fiber.

Abstract: An optical coupling lens includes a first lens portion and a second lens portion. The first lens portion includes a substrate portion and a coupling portion. The substrate portion includes a supporting surface and a bottom surface opposite to the supporting surface, the bottom surface includes at least two lenses. The coupling portion is substantially a cuboid and includes at least one lens corresponding to one of the least two lenses and a top end surface. The top end surface defines a recess, the recess is arranged at least one reflecting portion. The second lens portion is formed on the supporting surface. The second lens portion includes a coupling surface and a fourth reflecting surface. The coupling surface is arranged an eighth lens corresponding to the other lens of the at least two lenses arranging on the bottom surface.

Abstract: An optical coupling assembly includes a circuit board, at least one light emitter, at least one light receiver, and an optical coupling module. The circuit board includes a mounting surface and an alignment groove formed on the mounting surface. The at least one light emitter and at least one light receiver are mounted on the mounting surface. The optical coupling module includes at least two lenses and a positioning member. The positioning member is engaged with the alignment groove, with each of the at least one light emitter and the at least one light receiver being optically aligned with a respective one of the at least two first lenses.

Abstract: An optical module includes an optical lens block, an optical fiber connector, a fixing sheet, a fixing pin, two fixing arms, two elastic sheets and two elastic engagement portions. The optical fiber connector is optically coupled to the optical lens block. The fixing pin is inserted into a first opening on the optical lens block and a second opening on the optical fiber connector. The two fixing arms are positioned at the fixing sheet. The optical lens block and optical fiber connector are positioned between the fixing arms. The elastic sheets are respectively positioned at the front ends of the fixing arms. The elastic sheets press upon the optical lens block to push the optical lens block. The elastic engagement portions are respectively positioned at the rear end of the fixing arms and press upon the optical fiber connector to push the optical fiber connector.

Abstract: A fiber optic cable includes an optical fiber, strength components disposed on opposite sides of the optical fiber, and a polymeric cable jacket. The optical fiber includes a glass core, a glass cladding, and a polymer coating. The cable jacket surrounds the optical fiber and the strength components. Further, the cable jacket is tightly drawn onto the optical fiber, where excess fiber length of the optical fiber is such that positive strain is present in the optical fiber at room temperature (25° C.).

Abstract: A fiber optic cable includes a jacket, a pair of strength members, and an optical fiber. The jacket has a cavity, a major dimension and a minor dimension, and a medial portion. The strength members are disposed on opposing sides of the cavity and impart a preferential bend characteristic to the cable. The at least one optical fiber is disposed within the cavity. The jacket includes preferential tear portions disposed between a respective strength member and the medial portion, for separating the strength members from the medial portion.

Abstract: Technical Problem In the case where an optical fiber is wound around several times and housed, it is difficult to take out a terminal end of the optical fiber at a side wound around before. Solution to Problem A housing case includes: a body; and bobbin around which an optical fiber is to be wound, the bobbin being housed rotatably in the body, bobbin having a partition portion, partition portion having a fiber groove that guides the optical fiber between an inside and an outside of the partition portion, and the optical fiber being housed by housing a one end side of the optical fiber in the inside of the partition portion and by winding around an outer wall surface of the partition portion the optical fiber that has been guided to the outside of the partition portion with the fiber groove.

Abstract: A system for adhering a length of continuous substrate to a mounting surface is disclosed. The continuous substrate can be attached to a mounting surface by a regular array of spaced apart adhesive segments disposed longitudinally along the continuous substrate and between the mounting surface and the continuous substrate.

Abstract: A wet mateable connection assembly includes: at least one first and a second watertight case mateable to each other in a watertight manner, the first and the second case having respective first and second gates at respective first and second coupling ends; at least one first phase connector arranged inside the first case; and at least one second phase connector arranged inside the second case, wherein the first gate is movable inwardly to the second case.

Abstract: An infrared imaging system is formed by passively aligning two or more lens wafers including a plurality of lenses. The lens wafers may be pre-fabricated lens wafers in which the plurality of lenses are aligned utilizing an alignment jig having a plurality of conduits for distributing bonding material. Alternatively, the lens wafers may be formed of a base material molded around the plurality of optical lenses. The lens wafers may have a variety of alignment features, alignment inserts and/or alignment elements.

Abstract: A lens control apparatus having a zoom lens includes first and second operation members that give a zoom instruction for moving the zoom lens, and a controller that changes a zoom stop position to a first pattern according to the operation of the first operation member, and changes the zoom stop position to a second pattern, which has an interval wider than that in the first pattern, according to the operation of the second operation member.

Abstract: Provided is a lens barrel whose diameter can be reduced. The lens barrel includes a rotary frame having a gear on an inner peripheral surface, and a retracting lens frame which holds a retracting lens configured to retract from an optical axis along with rotation of the rotary frame. A position where the retracting lens retracts is where the gear of the rotary frame is located when the retracting lens is positioned on the optical axis. The rotary frame includes a first cam groove on an outer peripheral surface, and a second cam groove on the inner peripheral surface. The lens barrel also includes a first lens frame having a first cam follower which is mounted on the first cam groove, and a second lens frame having a second cam follower which is mounted on the second cam groove. The retracting lens frame is held by the second lens frame.

Abstract: An image capturing apparatus is applied in air or in a non-air medium and includes a lens assembly, an image sensor and a removable cover lens. The lens assembly includes at least one lens element. The image sensor is disposed on an image surface of the lens assembly. When the image capturing apparatus is applied in the non-air medium, the removable cover lens, the lens assembly and the image sensor are disposed along an optical axis in order from an object side to an image side.

Abstract: A heliostat array comprising a modular grid is disclosed. The array comprises a plurality of grid members; a plurality of stanchions connected to six of the plurality of the grid members; a plurality of heliostats mounted on stanchions and grid members. Each stanchion may consist of a threaded rod and locking mechanism for rigidly affixing the six grid members to the threaded rod. Each of the plurality of heliostats comprises a mirror, a circular track, and a carousel for rotating the mirror about the circular track. The circular track is concentric with a stanchion and mounted to three grid members that are 120 degrees apart. Each of the carousels may be operably coupled to and biased toward the corresponding circular track.

Abstract: The present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having a positive (+) refractive power, a second lens having a negative (?) refractive power, a third lens having a positive (+) refractive power, and a fourth lens having a negative (?) refractive power and having a negative (?) refractive power from a lens center to a lens outer edge.

Abstract: A five-piece lens set for capturing images, which includes a fixed aperture stop and an optical lens set, is disclosed. The optical lens set includes a first, a second, a third, a fourth and a fifth lens elements. The first lens element has negative refractive power adjacent to optical axis and a concave image side surface. The second lens element has negative refractive power adjacent to optical axis. The third lens element has positive refractive power adjacent to optical axis, both convex image side and object side surface. The fourth lens element has positive refractive power adjacent to optical axis and a convex object side surface. The fifth lens element has negative refractive power adjacent to optical axis and a convex image side surface. There is an interval between the image side surface of the fourth lens element and the object side surface of the fifth lens element.

Abstract: An imaging lens provided with a negative first lens group and a positive second lens group disposed in order from the object side. The first lens group is composed of a first group first lens which is a biconcave negative single lens, and the second lens group is composed of a positive second group first lens, an aperture stop, a positive second group second lens, and a negative second group third lens disposed in order from the object side. The second group second lens and second group third lens are cemented to form a cemented lens. The imaging lens is configured to satisfy conditional expressions (2): 0<fg2/f<1.3, (2b?): 0.5<fg2/f<1.25, and (6): 31<?d2 <70 at the same time, where fg2 is combined focal length of the second lens group, f is focal length of the entire lens system, and ?d2 is Abbe number of the second group first lens.

Abstract: Provided are: a zoom lens which exhibits a large variable-power ratio, an increased degree of freedom with respect to aberration correction, and which has been achieved having a sufficient reduction in size in the optical axis direction; and an imaging device equipped therewith. The zoom lens includes at least, from the object side, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group, and a fifth lens group, in that order. In the zoom lens, prescribed conditions are satisfied.

Abstract: A five-group zoom lens including, in order from the object side, positive, negative, negative, positive, and positive groups. The first group includes a negative meniscus lens with the concave surface toward the image side, a positive lens and a positive lens. The second group includes a negative lens with the image-side surface having an absolute value of curvature radius smaller than that of the object side surface, a biconcave lens, and a biconvex lens. The third group includes a negative lens with the object side surface having an absolute value of curvature radius smaller than that of the image-side surface, and is moved during focusing on a closer object. The fifth group includes a positive fifth-A group including a biconvex lens, and a negative fifth-B group including a biconcave lens and a biconvex lens, wherein condition expression (1) is satisfied: 0.22<fW/f1<0.27??(1).

Abstract: An optical system for light energy concentration may comprise a light concentrator to convert incident light to converging light, a light collimating element to receive the converging light and to reduce an angle of convergence of the converging light, and a light directing element to direct the reduced-angle converging light to a light guide to transmit the directed light.

Abstract: Illumination phase controls that provide precise and fast phase control of structured illumination patterns used in structure illumination microscopy are described. A coherent light source is used to generate a beam of coherent light that is split into at least three coherent beams of light. In one aspect, an illumination phase control is composed of at least one pair of rotatable windows to apply at least one phase shift to at least one of the beams. An objective lens is to receive the beams and focus the at least three beams to form an interference pattern. The phase control can be used to change the position of the interference pattern by changing the at least one phase shift applied to the at least one beam.

Abstract: An immersion microscope objective includes, in order from an object side, a first lens group having a positive refractive power, a second lens group, and a third lens group, wherein the first lens group changes a light beam from an object to a convergent light beam, the second lens group has a refractive power smaller than that of the first lens group, and the following conditional expression (1-1) is satisfied: 7.5 mm<NA0×d0 (1-1) where NA0 denotes an object-side numerical aperture of the immersion microscope objective, and d0 denotes a working distance of the immersion microscope objective.

Abstract: A microscope has a light source for generating a light beam having a wavelength, ?, and beam-forming optics configured for receiving the light beam and generating a Bessel-like beam that is directed into a sample. The beam-forming optics include an excitation objective having an axis oriented in a first direction. Imaging optics are configured for receiving light from a position within the sample that is illuminated by the Bessel-like beam and for imaging the received light on a detector. The imaging optics include a detection objective having an axis oriented in a second direction that is non-parallel to the first direction. A detector is configured for detecting signal light received by the imaging optics, and an aperture mask is positioned.

Abstract: A rigid endoscope including: a fiber tube; a window disposed at a the distal end of the fiber tube; an objective lens arranged in the fiber tube; a spacer tube to maintain the objective lens at a predetermined-distance from the window; and an objective lens tube for holding the objective lens, the objective lens tube being disposed in the fiber tube between the window and at least a portion of the spacer tube; wherein the spacer tube is supported on a distal end against the window and on a proximal end against the objective lens.

Abstract: This disclosure provides apparatus, systems and methods for an electromechanical systems (EMS) device having one or more flexible support posts. In one aspect, the EMS device includes a substrate, a stationary electrode over the substrate, one or more flexible support posts over the substrate, and a movable electrode over the stationary electrode and supported by the one or more flexible support posts. The movable electrode is configured to move across a gap between the movable electrode and the stationary electrode upon electrostatic actuation, where the one or more flexible support posts include a first organic material and can be configured to compress to permit the movable electrode to move across the gap.

Abstract: A projection device with a color wheel locking function is provided. The projection device includes a light source, a first color wheel unit, a first spindle motor, a magnetic locking mechanism and a control unit. The light source generates a light beam. The first color wheel unit has at least one transparent region through which the light beam transmits. The first spindle motor is to be enabled to rotate the first color wheel unit, and disabled to stop rotating in correspondence with an external magnetic force. The magnetic locking mechanism abuts upon the first spindle motor and generates the external magnetic force. The control unit controls the magnetic locking mechanism. When the first spindle motor stops in correspondence with the external magnetic force, a position of the at least one transparent region corresponds to the light source so that the light beam transmits through the transparent region.

Abstract: A MEMS device includes a substrate, a moving part including a magnetic material and configured to tilt relative to the substrate, a first magnetic pole and a second magnetic pole configured to apply a magnetic field to the magnetic material, and a magnetic field detector configured to detect the magnetic field of the magnetic material. In the MEMS device, the first magnetic pole and the second magnetic pole are disposed on one side of the moving part, the one side being a side on which the magnetic material is located. The magnetic field detector is disposed between the first magnetic pole and the second magnetic pole. A distance between the first magnetic pole and the second magnetic pole is shorter than a length of the moving part in a direction from the first magnetic pole toward the second magnetic pole.

Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include a register of light-emitting diodes that sequentially generates pixels or other discrete portions of an image. Respective sets of light signals corresponding to the respective portions (e.g., rows) of the image are sequentially directed into the user's field of view by a combination of a dynamic reflector and a set of static light-redirection elements. The dynamic reflector is an elongated reflective strip (including, for example, one or more MEMS-based digital micromirror(s)) mounted outside of the field of view of the user and the set of static light-redirection elements are substantially transparent and mounted directly in a field of view of the user. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user.

Abstract: A head-up display device including a screen member, a first generation portion, and a second generation portion is provided. The screen member is provided with multiple optical elements each of which has a curved surface portion and forms a scan surface by an array of the curved surface portions. The first generation portion generates a first laser beam that is irradiated to the scan surface to draw a display image. The second generation portion generates a second laser beam to draw a display image that is irradiated to the scan surface from a direction different from the first laser beam.

Abstract: An imaging lens, consisting of a first lens group, a top, and a second lens group having a positive refractive power, in order from the object side, in which the first lens group is composed of a first front lens group having a negative refractive power and a first rear lens group having a positive refractive power in order from the object side, the first rear lens group is composed of a cemented lens formed of a negative lens and a positive lens, the first front lens group at least includes four negative lenses, and at least two of the negative lenses included in the first front lens group satisfy a conditional expression given below: 70<?d1n??(1).

Abstract: An adaptive optics system includes a spatial light modulator configured to spatially modulate a phase of an optical image incident on a modulation surface and a wavefront sensor including a lens array having a plurality of two-dimensionally arranged lenses and an optical detection element for detecting a light intensity distribution including converging spots formed by the lens array and configured to receive the optical image after the modulation from the spatial light modulator, and compensates for wavefront distribution by controlling a phase pattern displayed in the spatial light modulator based on a wavefront shape of the optical image obtained from the light intensity distribution, wherein an amount of angular displacement between the modulation surface and the wavefront sensor is calculated.

Abstract: A system for adjusting an electronic display is provided herein. The system includes a forward looking light sensor receiver to logarithmically receive a first light information from a forward looking light sensor; an ambient light sensor receiver to logarithmically receive a second light information from an ambient light sensor; and an adjuster to adjust a luminance of the electronic display based on a combination of the first light information and the second light information.