Abstract: The frame assembly has a first direction and comprises a first frame, which has at least one exhausting passage, an adhesive layer, which has at least one through hole, and a second frame, which is connected to the first frame via the adhesive layer. A containing space is defined by the first frame and the second frame together and extends along the first direction. The exhausting passage fluidly communicates with the containing space and the external environment. The adhesive layer is disposed inside the containing space to divide the containing space into two venting passages that fluidly communicate with each other through the through hole. Residue air in the containing space is evacuated through the exhausting passage, increasing an adhered area and adhesion completeness of the adhesive layer, thereby increasing an adhesion-bonding strength of the two frames and structural stability of the frame assembly.

Abstract: A lighting keyboard includes a backlight module and at least one keyswitch. The backlight module includes a lighting unit, a light guide panel, and a lighting board for illuminating a keycap of the keyswitch. The light guide panel includes a panel hole to accommodate the lighting unit. The light guide panel further includes plural slots intervally surrounding the lighting unit. The lighting board includes a micro-structure region facing toward the light guide panel. Each of the slots of the light guide panel has a bulge portion protruding to the lighting unit. At two sides of the bulge portion, each of the slots forms two slots walls with an obtuse angle, thereby expanding the transmitting angle for the multi-color lights from the lighting unit and enhancing the light-mixing uniformity while illuminating the keycap.

Abstract: In some implementations, a substrate tube in a modified chemical vapor deposition process may rotate while glass precursors flow into the substrate tube at a fixed rate. Dopants may be delivered into the substrate tube while heat is applied to the substrate tube to deposit, on an inner wall of the substrate tube, a layer of material including the glass precursors and the dopants. A lateral position of an exit of an injection tube used to deliver the dopants may be adjusted while the substrate tube is rotated and heat is applied to the substrate tube such that the material deposited on the inner wall of the substrate tube has an azimuthally non-uniform doping concentration. Alternatively, a rotation of the substrate tube may be adjusted to create opposing temperature gradients within the substrate tube, causing non-uniform layer deposition to occur on different sides of the substrate tube in alternating passes.

Abstract: A dispersion-compensation microstructure fiber uses pure silica glass as the background material. It includes the core, the first-type defects, the second-type defects and the cladding. The air holes in the fiber cross section are arranged in the equilateral triangle lattice with the same adjacent air-hole to air-hole spacing. The core is formed by omitting 1 air hole. The first-type defects are formed by the 6 air holes locating at the vertices of hexagonal third-layer porous structure surrounding the core and their surrounding background material. The second-type defects are formed by the air holes in the first air-hole layer surrounding each first-type defect and their surrounding background material. The second-type defects act as the porous structure to surround the first-type defects and the fundamental defect modes, and can also combine with the first-type defects to act as the core of the second-order defect modes.

Abstract: An edge coupler for coupling a light beam (e.g., a laser beam) into a waveguide comprises a first waveguide section characterized by a first thickness and a first constant width, a second waveguide section physically coupled to the first waveguide section and characterized by the first thickness and a gradually decreasing width, and a third waveguide section partially overlapping with the second waveguide section at an overlap region, the third waveguide section characterized by a gradually increasing width and a second thickness different from (e.g., greater than) the first thickness. In some embodiments, a surface (e.g., the top or bottom surface) of the second waveguide section and a surface (e.g., the top or bottom surface) of the third waveguide section are on a same plane.

Abstract: An optical device includes a first layer, a second layer, two first waveguides arranged in a side by side manner in the first layer; two second waveguides arranged in a side by side manner in the second layer, and a third waveguide arranged between the first waveguides and between the second waveguides. The first waveguide includes a first tapered waveguide and a second tapered waveguide. The third waveguide includes a third tapered waveguide that is disposed side by side with the second tapered waveguides. The first tapered waveguide has a width that is gradually narrower as the first tapered waveguide is away from a joining point with the second tapered waveguide. The second tapered waveguide has a width that is gradually narrower as the second tapered waveguide is away from a joining point with the first tapered waveguide. The third tapered waveguide has a width that is gradually wider.

Abstract: An optical waveguide device in which an optical loss is reduced by removing an air bubble inside an adhesive layer for joining a reinforcing member from near an optical waveguide or the like even in a case where a protruding part such as a rib type optical waveguide or a spot size converter is formed on an optical waveguide substrate is provided. An optical waveguide device includes an optical waveguide substrate (1, 2) provided with an optical waveguide (10, 12), and a reinforcing member (3) disposed on an upper side of the optical waveguide (10, 12) near an end portion of the optical waveguide (10, 12), the optical waveguide substrate (1, 2) and the reinforcing member (3) being joined through an adhesive layer (4), in which a protective layer (13) that covers the optical waveguide (10, 12) is provided on the optical waveguide (10, 12) positioned on a lower side of the reinforcing member (3), and the adhesive layer (4) is disposed outside the protective layer (13).

Abstract: An optical connection structure includes a first silicon photonic chip having a first lateral surface, a second silicon photonic chip having a second lateral surface that faces the first lateral surface, and an optical waveguide disposed astride a gap between the first silicon photonic chip and the second silicon photonic chip. The first silicon photonic chip includes a first silicon substrate and a first silicon waveguide disposed over the first silicon substrate. The second silicon photonic chip includes a second silicon substrate and a second silicon waveguide disposed over the second silicon substrate. The optical waveguide includes a first cladding filling a space between the first lateral surface and the second lateral surface, a core disposed on the first cladding and covering one end of the first silicon waveguide and one end of the second silicon waveguide, and a cladding covering the core.

Abstract: An optical waveguide includes a cladding layer, a Si layer, a REO layer, and a cap layer. The REO layer is made of a single-crystal rare earth oxide, and is formed on the Si layer. The cap layer is formed on the REO layer. The cap layer may be made of a material transparent to light to be guided. The cap layer has a stripe shape extending in a direction in which light is guided.

Abstract: A method for dividing an optical fibre comprises providing a hollow core optical fibre having a length, a cladding which comprises a microstructure, a hollow core surrounded by the cladding, and a negative pressure portion in which the pressure is below atmospheric pressure that extends over at least a portion of the length; and cleaving the hollow core optical fibre at a divide location within the negative pressure portion to divide the hollow core optical fibre into two parts and provide an end facet at the divide location on one or both of the parts.

Abstract: A system of aligning concatenated sections of multicore optical fiber incorporates the capability of intentionally changing core assignments as part of the azimuthal alignment process. The intentional changing of core assignments, referred to as offset clocking, compensates for differences in properties of the individual core regions in a way that reduces variations between the spatial channels supported in the transmission system. The offset clocking technique can be used, e.g., to improve the attenuation (or other selected properties of the propagating signals). The offset clocking technique may be used to step through sequential changes core assignments at one or more splice locations (passive clocking) or identify a particular pairing of cores from one fiber section to the next (e.g., “good quality” core assigned to a “poor quality” signal exiting the first section) and rotate the fiber sections with respect to each other to achieve this particular core assignment.

Abstract: A structure for coupling an optical signal between an integrated circuit photonic structure and an external optical fiber is disclosed as in a method of formation. The coupling structure is sloped relative to a horizontal surface of the photonic structure such that light entering or leaving the photonic structure is substantially normal to its upper surface.

Abstract: A photonic integrated circuit structure includes a substrate, a waveguide structure and a spot size converter. The waveguide structure is disposed over a surface of the substrate and has a receiving end. The spot size converter includes a concave mirror and a curved mirror. The concave mirror and the curved mirror are opposite to each other and have a common focus. The concave mirror is arranged to reflect a parallel beam from a transmitting end such that a first reflected beam is able to converge at the common focus, and the curved mirror is arranged to reflect the first reflected beam such that a second reflected beam is directed parallel to the receiving end of the waveguide structure.

Abstract: An image display device includes a light source, a display panel, and a light guide. The light source has a light source element that irradiates light. The display panel displays an image, and the light guide guides light from the light source to the display panel. The light guide has a lens portion that suppresses spread of light from the light source part. A maximum spread angle ? at which light irradiated from the light source intersects with a main plane of the lens portion being 15 degrees or more and 60 degrees or less. Light irradiated from the light source has a width less than one-third of the width of the main plane of the lens portion.

Abstract: An image light guide for conveying a virtual image including a substrate operable to propagate image-bearing light beams along a length thereof. An in-coupling diffractive optic is formed along the substrate and is operable to diffract image-bearing light beams from an image source into the substrate in an angularly encoded form. An out-coupling diffractive optic is formed along the substrate, wherein the out-coupling diffractive optic is operable to diffract the image-bearing light beams from the substrate in an angularly decoded form. The in-coupling diffractive optic has three pluralities of periodic diffractive structures symmetric about three equidistant axes and the out-coupling diffractive optic has two pluralities of periodic diffractive structures having a periodicity equivalent to two of the three pluralities of periodic diffractive structures of the in-coupling diffractive optic.

Abstract: According to one embodiment, in an optical fiber bundle, in the cross section, arrangement of cores of a first multi-core fiber and arrangement of cores of a second multi-core fiber are the same as each other, arrangement of cores of a third multi-core fiber and arrangement of cores of a fourth multi-core fiber are the same as each other, and when the first multi-core fiber is rotated 180° in a circumferential direction of the first multi-core fiber, the arrangement of the cores of the first multi-core fiber is the same as the arrangement of the cores of the fourth multi-core fiber.

Abstract: An object of the present disclosure is to provide a simple, compact optical switch with low power consumption.

Abstract: An optical device may include an optical fiber, a solder material, and a fibermount comprising a non-porous material. The optical fiber may be affixed to the fibermount by the solder material. The non-porous material of the fibermount may have a thermal conductivity of less than 20 Watts per meter-Kelvin (W/m-K). A coefficient of thermal expansion (CTE) of the non-porous material of the fibermount may match a CTE of the solder material. The CTE of the non-porous material of the fibermount may match a CTE of a material of the optical fiber.

Abstract: Assemblies and optical connectors including one or more optical fibers laser-bonded to a substrate, as well as methods for fabricating the same, are disclosed. In one embodiment, an assembly includes a substrate having a surface, an optical element bonded to the surface of the substrate, a bond area between the optical fiber and the surface of the substrate, wherein the bond area includes laser-melted material of the substrate that bonds the optical fiber to the substrate, and a metal buttress structure adjacent to the bond area.

Abstract: A ferrule is formed with an optical fiber insertion hole into which an optical fiber is inserted, and includes a resin composition containing a thermoplastic resin and a filler, wherein a size of coarse particles originated from the filler is 50 ?m or less, or a size of aggregates originated from the filler is 50 ?m or less.

Abstract: Fiber optic connectors comprising compact footprints along with cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end. The optical connectors disclosed may be tunable for improving optical performance and may include a spring for biasing the ferrule to a forward position as desired.

Abstract: A sealable connection system is provided. The system can include a connection assembly including a housing and at least one ferrule positioned within the housing. An inner surface of the housing can be arranged to mate with and secure to an outer surface of a sensor assembly. The at least one ferrule can be arranged to engage with the sensor assembly as the housing is secured to the sensor assembly. The system can also include a fiber optic cable assembly. The fiber optic cable assembly can include a fiber optic cable extending through the housing and the at least one ferrule. The fiber optic cable can also be surrounded, at least along a length of the fiber optic cable within the connection assembly, by a fiber optic cable cover. The sealable connection system is provided to hermetically connect the fiber optic cable assembly to a sensor assembly.

Abstract: A substrate type optical waveguide element includes a bent waveguide that guides a basic mode, that converts an unneeded mode other than the basic mode to a slab mode, and that is a rib type. Furthermore, the substrate type optical waveguide element includes a removing portion that is arranged at an outer circumferential portion of the bent waveguide, and that removes, from the bent waveguide, the slab mode converted in the bent waveguide.

Abstract: An optical module that includes an optical transceiver component and a fiber adapter. The optical transceiver component includes a first tubular shell, a light splitting assembly in the first tubular shell, first and second light emission assemblies and first and second light reception assemblies connected to the first tubular shell, and a bracket inserted onto the first tubular shell. The first tubular shell is provided therein with an optical element and an inclined plane located below the optical element. The inclined plane is configured to reflect a reflected beam from a transmission surface of the optical element. The light splitting assembly includes a support frame and three optical splitters. The first light reception assembly is inclinedly disposed relative to a central axis of the first tubular shell via a bracket, while the second light reception assembly is perpendicularly assembled on the first tubular shell.

Abstract: This is a type of pluggable optoelectronic transceiver that operates while immersed in cooling fluid for data transmission. The pluggable optoelectronic transceiver consists of an optical module, fluid separating colloid, and colloid separating cover. The fluid separating colloid serves to keep the cooling fluid separate from the optical module, while the colloid separating cover further ensures separation between the fluid separating colloid and the optical module. This design prevents the cooling fluid and the fluid separating colloid from infiltrating the optical module and affecting its operation.

Abstract: An optical transceiver module temperature control device includes a processor, a printed circuit board assembly, an optical transceiver module and a temperature adjustment element. The processor is configured to measure an ambient temperature. The printed circuit board assembly includes a first side and a second side. The first side is opposite to the second side. The optical transceiver module is disposed on the first side of the printed circuit board assembly. The temperature adjustment element is coupled to the processor and disposed on the second side of the printed circuit board assembly. The processor is configured to generate a temperature adjustment signal according to the ambient temperature and an operating temperature range. The temperature adjustment element is configured to perform heat exchange with the printed circuit board assembly according to the temperature adjustment signal to adjust a temperature of the optical transceiver module into the operating temperature range.

Abstract: A cable that protects an object includes a sheath and a cylindrical reinforcement member disposed inside the sheath and that surrounds the object. The cylindrical reinforcement member has a first side edge and a second side edge that extend in a longitudinal direction. The cylindrical reinforcement member is formed of a cable reinforcement sheet including a first metal sheet and a second metal sheet joined to the first metal sheet. A portion of the first metal sheet overlaps a portion of the second metal sheet, and the overlapping portions define a joint portion where the first metal sheet and the second metal sheet are joined. The joint portion is inclined, from the second side edge to the first side edge, toward the first metal sheet.

Abstract: What is disclosed is an optical fiber organization system that includes a generally planar bottom portion having a plurality of linear grooves defined thereon, the plurality of linear grooves being oriented along in parallel along a longitudinal axis. The generally planar top portion is rotatably coupled to the generally planar bottom portion, where the top portion being rotatable between a fully-open position providing access to the plurality of linear grooves and a fully-closed position adapted to securely enclose the plurality of linear grooves. Each of the plurality of linear grooves encased between the top and bottom portions is adapted to accommodate and hold a length of at least one optical fiber extending along the longitudinal axis.

Abstract: Devices and methods for retaining, orienting, and/or fanning out flat optical fiber ribbons. The devices are configured to anchor end portions of sheaths holding multiple flat optical fiber ribbons as the flat fiber ribbons enter a fiber management tray via the retaining, orienting, and/or fanning out device.

Abstract: An optical fiber ribbon includes: optical fibers disposed side by side in a predetermined direction; and connecting portions that connect two adjacent ones of the optical fibers. A peripheral resin portion is formed on a periphery of the optical fibers. An arithmetic mean roughness Ra of a surface of the peripheral resin portion is 0.41 ?m or lower. A ten-point mean roughness Rz of a surface of the peripheral resin portion is 1.4 ?m or lower.

Abstract: The disclosed fiber optic cable may include (1) a plurality of optical fibers, (2) a core tube surrounding the plurality of optical fibers, (3) a thixotropic gel filling an interstitial space among the optical fibers within the core tube, (4) an intermediate layer surrounding the core tube, where the intermediate layer includes a plurality of linear elements contra-helically wrapped about the core tube, and (5) an outer layer surrounding the intermediate layer, where the outer layer includes a combination of a moisture-cure cross-linked material and an activation catalyst, where the outer layer is formed by masticating and extruding the combination onto the intermediate layer. Various other cables, assemblies, and methods are also disclosed.

Abstract: An optical system for aligning various avionics sensors and displays includes an aircraft having a nose section, a forward fuselage section, and an aft fuselage section, and at least one of a sensor, a display, a sensor substitute, and a display substitute. A laser is attached to a side of the aft section of the fuselage, and is directed toward a corresponding laser target on a laser target board. The laser target board is mounted on a frame and is positioned a distance away from the aircraft, and includes a plurality of laser targets. Between the laser target board and the laser is a reference plate which includes an aperture through which a beam from the laser passes. With the laser aligned with its respective laser target, the relative position of the sensor, display, sensor substitute, or display substitute is determined relative to known positions on the aircraft.

Abstract: The embodiment disclosed herein is an actuator for camera comprising a lens module emitting light towards an image sensor; a housing enclosing the lens module; and a patterned member disposed on the internal surface of the housing wherein the internal surface is the one between the lens module and the image sensor. The patterned member comprises protrusions arranged in repetition along an optical axis, in which each protrusion extends lengthwise along a direction perpendicular to the optical axis.

Abstract: An optical module includes a base, a holding component, an optical element, and at least one detachable structure. The holding component is disposed on the base, in which a position of the holding component relative to the base along a first axial direction is adjustable. The optical element is disposed on the holding component. The detachable structure is extended from one of the base and the holding component to face another one of the base and the holding component, so as to limit a position of the holding component relative to the base along a second axial direction.

Abstract: Aspects of the present disclosure are directed to an adjustment mechanism for adjusting an eye-to-lens distance of a headset display device. The adjustment mechanism can include an adjustment wheel that is rotatable by a user, a pinion gear fixed to a screw, and a threaded member receiving the screw and mounted to a forehead pad frame supporting a forehead pad. The adjustment wheel can include an internal bevel gear ring. The pinion gear is rotated by rotation of the internal bevel gear ring, and the screw rotates with the pinion gear. The pinion gear and the screw can rotate about a second axis. The threaded member moves along the screw, as the screw rotates, to move the forehead pad to adjust the eye-to-lens distance. The internal bevel gear ring, the pinion gear, and the screw are configured to allow additional components to pass through an interior of the adjustment wheel.

Abstract: Disclosed is a lens driving apparatus. The lens driving apparatus includes a base formed at a center thereof with a first opening; a housing coupled with the base and having a second opening corresponding to the first opening; a yoke installed on the base and including a horizontal plate having a third opening corresponding to the first opening and a vertical plate protruding upward from the horizontal plate; a bobbin movably installed in the yoke and coupled with a lens module; a coil fixedly disposed around the bobbin; a plurality of magnets provided at the vertical plate of the yoke to face the coil; and a spring installed on at least one of upper and lower portions of the yoke to return the bobbin, which has moved up due to interaction between the magnet and the coil, to its initial position.

Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion used for connecting an optical element, a fixed portion, and a driving assembly used for driving the movable portion to move relative to the fixed portion. The movable portion is movable relative to the fixed portion.

Abstract: A control method for a wearable device and an electronic device are disclosed. The method includes: When the wearable device is not worn, a diopter of an optical lens group of the wearable device is increased, to increase a size of a light spot that is formed by focusing light on a screen through an optical lens.

Abstract: An imaging lens module with auto focus function includes an imaging lens assembly, an electromagnetic driving component assembly and a lens carrier. The imaging lens assembly has an optical axis. The electromagnetic driving component assembly drives the imaging lens assembly to move in a direction parallel to the optical axis by a Lorentz force. The imaging lens assembly is mounted to the lens carrier such that the imaging lens assembly can be wholly driven by the Lorentz force. The lens carrier includes an object-side part, a mounting structure and a plurality of plate portions. The object-side part includes a tip-end minimal aperture configured for light to travel through; and a tapered surface which surrounds an area tapered off from image side to object side. The mounting structure and the plate portions are configured for at least a part of the electromagnetic driving component assembly to be mounted thereto.

Abstract: A lens driving apparatus includes a holder, a cover, a carrier, a first magnet, a coil, a spring, two second magnets and a hall sensor. The holder includes an opening hole. The cover is made of metal material and coupled to the holder. The carrier is movably disposed in the cover, and for coupling to a lens. The first magnet is connected to an inner side of the cover. The coil is wound around an outer side of the carrier, and adjacent to the first magnet. The spring is coupled to the carrier. The second magnets are disposed on one end of the carrier which is toward the holder. The hall sensor is for detecting a magnetic field of any one of the second magnets, wherein the magnetic field is varied according to a relative displacement between the hall sensor and the second magnet which is detected.

Abstract: A reflector and processing chamber having the same are described herein. In one example, a reflector is provided that includes cylindrical body, a cooling channel, and a reflective coating. The cylindrical body has an upper surface and a lower surface. The lower surface has a plurality of concave reflector structures disposed around a centerline of the cylindrical body. The cooling channel disposed in or on the cylindrical body. The reflective coating is disposed on the plurality of concave reflector structures.

Abstract: An optical imaging system includes a plurality of lenses disposed along an optical axis from an object side of the optical imaging system toward an imaging plane of the optical imaging system. The lenses are separated from each other by respective air gaps along the optical axis between the lenses. The lenses include a first lens closest to the object side of the optical imaging system. The conditional expressions 1.5 mm<Gmax, TL<12.0 mm, and 0.15<R1/f are satisfied, where Gmax is a maximum air gap along the optical axis among all of the air gaps, TL is a length of the optical imaging system along the optical axis from an object-side surface of the first lens to the imaging plane, R1 is a radius of curvature of the object-side surface of the first lens, and f is a focal length of the optical imaging system.

Abstract: The present disclosure provides an imaging optical lens assembly, including, in order from an object side to an image side: a first lens element with negative refractive power having an object-side surface being concave in a paraxial region, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with positive refractive power, and a fifth lens element with negative refractive power having an image-side surface being concave in a paraxial region and at least one convex shape in an off-axial region on the image-side surface, wherein the imaging optical lens assembly has a total of five lens elements.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element. The first lens element, the fifth lens element and the sixth lens element are made of plastic. The optical axis region of the image-side surface of the second lens element is convex, the optical axis region of the image-side surface of the third lens element is convex, the optical axis region of the object-side surface of the fourth lens element is convex and the optical axis region of the image-side surface of the seventh lens element is concave to satisfy (T5+G56+T6)/(G23+T3+G34+T4+G45)?1.200 by controlling the surface curvatures of each lens element to enlarge HFOV, to reduce the system length and to have good imaging quality.

Abstract: An imaging optical lens assembly includes four lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.

Abstract: The present invention provides an optical imaging lens. The optical imaging lens comprises eight lens elements positioned in an order from an object side to an image side. Through controlling convex or concave shape of surfaces of the lens elements and satisfying at least one inequality, the optical imaging lens may shorten system length with a good imaging quality.

Abstract: An optical imaging system includes a first lens having negative refractive power, a second lens having negative refractive power, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first to seventh lenses are sequentially disposed from an object side toward an image side. The third lens and the seventh lens are formed of plastic, and the first lens, the second lens, the fourth lens, the fifth lens, and the sixth lens are formed of glass.

Abstract: An optical imaging system includes a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a negative refractive power, and a fifth lens having a positive refractive power. The first to fifth lenses are sequentially disposed from an object side to an imaging plane. One or more lenses among the first to fifth lenses are formed using a glass material.

Abstract: An image capturing optical system includes seven lens elements, the seven lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. An image-side surface of the fifth lens element is convex in a paraxial region thereof. An image-side surface of the sixth lens element is concave in a paraxial region thereof. The seventh lens element has negative refractive power.

Abstract: The present disclosure provides an image capturing optical system comprising: a positive first lens element having a convex object-side surface; a negative second lens element having a concave object-side surface; a third lens element; a fourth lens element having a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface thereof being aspheric; a fifth lens element having a concave image-side surface concave, both of the object-side surface and the image-side surface being aspheric, at least one of the object-side surface and the image-side surface having at least one convex shape in an off-axis region thereof.