Abstract: A display device includes a display panel. A light source is configured to output light having a first color. A light guide plate is disposed below the display panel and includes an incident surface into which the first color light is incident, an opposite surface that is opposite to the incident surface, and an emission surface facing the display panel. A color convertor is disposed between the display panel and the light guide plate. The color convertor is configured to absorb the first color light and to output light having a different color to the display panel. A reflector is disposed below the light guide plate. A first reflection area and an adjacent second reflection area are defined on the reflector. A light absorber is disposed on the first reflection area adjacent to the light source. The light absorber is configured to absorb the first color light.

Abstract: An optical fiber manufacturing apparatus includes a heating furnace configured to heat and melt an optical fiber preform; a pulling mechanism configured to adjust an outer diameter of a glass optical fiber by drawing out the glass optical fiber from the optical fiber preform melted through the heating by the heating furnace, and to draw the glass optical fiber that has been adjusted in outer diameter; a coating mechanism configured to apply a predetermined resin on an outer circumference of the glass optical fiber that has been adjusted in outer diameter; and a transport mechanism configured to returnably retract the coating mechanism from a passage route of the glass optical fiber.

Abstract: The present disclosure provides a backlight module and a display device. The backlight module includes a back plate, a first film layer, and a bonding portion. The back plate includes a back plate body and a side plate, where the side plate is disposed at a periphery of the back plate body and extends from the periphery of the back plate body. The first film layer is located in the accommodation space and is disposed as the outermost surface of the backlight module, and includes a film layer body and a protruding portion protruding from a periphery of the film layer body, where a projection of the protruding portion at a plane of the backlight exceeds a projection of the side panel at a plane of the backlight. The bonding portion is disposed at an outer side of the side plate and bonding the protruding portion and the side plate.

Abstract: A backlight module and a display device are provided. The backlight module includes a back plate, a light guide plate, a first and a second light sources, and a cushion member. The back plate includes a top surface having an opening, a bottom surface, a first and a second sidewalls, to define an accommodating space. The light guide plate is disposed in the accommodating space. The light guide plate includes a first and a second light-incident surfaces, and it is connected to a light-emitting surface. The first and second light sources are disposed beside the first and second light-incident surfaces respectively, and the first light source is relatively close to the first sidewall of the back plate, and an adjustment space is provided between the second light source and the second sidewall of the back plate. A cushion member is located in the adjustment space.

Abstract: A polarization maintaining fiber includes: a core; an inner cladding enclosing the core; two stress applying parts that sandwich the inner cladding therebetween; and an outer cladding enclosing the inner cladding and the two stress applying parts. Each of the two stress applying parts is depressed inward against the inner cladding, and the core has a flattened cross section having a long-axis that corresponds to a direction in which the two stress applying parts are aligned.

Abstract: An optical fiber manufacturing method includes setting a first holding member and a rod inside a glass pipe, the first holding member made of glass and having plural holes formed, so that the rod is supported by the first holding member; filling glass particles between the rod and a glass pipe inner wall; holding the rod such that the rod and the filled glass particles are enclosed by the glass pipe inner wall and the first and second holding members, and sealing one end of the glass pipe and manufacturing an intermediate; and manufacturing an optical fiber from the intermediate, wherein a bulk density of the first and second holding members is set with reference to a bulk density of a filling portion made from the glass particles, and the predetermined range is determined according to a core diameter permissible variation range in its longitudinal direction.

Abstract: A waveguide optoelectronic device comprising a rib waveguide region, and method of manufacturing a rib waveguide region, the rib waveguide region having: a base of a first material, and a ridge extending from the base, at least a portion of the ridge being formed from a chosen semiconductor material which is different from the material of the base wherein the silicon base includes a first slab region at a first side of the ridge and a second slab region at a second side of the ridge; and wherein: a first doped region extends along: the first slab region and along a first sidewall of the ridge, the first sidewall contacting the first slab region; and a second doped region extends along: the second slab region and along a second sidewall of the ridge, the second sidewall contacting the second slab region.

Abstract: An eyepiece waveguide for an augmented reality. The eyepiece waveguide can include a transparent substrate with an input coupler region, a first orthogonal pupil expander (OPE) region, and an exit pupil expander (EPE) region. The input coupler region can couple an input light beam that is externally incident on the input coupler region into at least a first guided light beam that propagates inside the substrate. The first OPE region can divide the first guided beam into a plurality of replicated, spaced-apart beams. The EPE region can re-direct the replicated beams from the first OPE region such that they exit the substrate. The EPE region can have an amount of optical power.

Abstract: Waveguide bends and methods of fabricating waveguide bends. A first waveguide bend is contiguous with a waveguide. A second waveguide bend is spaced from a surface at an inner radius of the first waveguide bend by a gap. The second waveguide bend may have a substantially concentric arrangement with the first waveguide bend.

Abstract: A mode-matched waveguide Y-junction with balanced or unbalanced splitting comprises an input waveguide, expanding from an input end to an output end, for expanding the input beam of light along a longitudinal axis; first and second output waveguides extending from the output end of the input waveguide separated by a gap. Ideally, each of the first and second output waveguides includes an initial section capable of supporting a fundamental super mode, and having an inner wall substantially parallel to the longitudinal axis, and a mode splitting section extending from the initial section at an acute angle to the longitudinal axis.

Abstract: A method for protecting fusion spliced optical fibers includes immersing sections of fusion spliced first and second optical fibers in a pool of molten thermoplastic material, followed by removal and cooling of liquid-coated areas, to yield a solid thermoplastic overcoating that extends over a splice joint as well as previously stripped sections and pre-coated sections of the first and second optical fibers. Optionally, a strength member may be adhered to the solid thermoplastic overcoating to provide a reinforced fusion spliced section. A strength member may include a metal rod or a secondary, thick thermoplastic coating. A fiber optic cable assembly includes a solid thermoplastic overcoating that extends over the splice joint as well as previously stripped sections and pre-coated sections of the fibers.

Abstract: An electromagnetic radiation beam is inputted into a ring interferometer rotating at the angular velocity ? where the beam is split into two equally intensive counter—propagating electromagnetic beams. The Sagnac Effect results in the phase shift of ±Pi/2 radians, which may be either positive or negative depending on the direction in which the counter-propagating electromagnetic radiation beams propagate with regard to the rotation direction of the ring interferometer. An additionally phase shift of Pi/2 radians is induced between the counter-propagating electromagnetic radiation beams inside the ring interferometer results in a total phase shift of either Pi radians or 0. The counter-propagating electromagnetic radiation beams inside the ring interferometer are then combined into one single electromagnetic radiation (EMR) beam which outputted from the rotating ring interferometer by using a different path than the one through which the EMR beam is inputted into it.

Abstract: A fiber optic adapter is disclosed by the present disclosure, and belongs to the technical field of fiber optic adapter. The fiber optic adapter includes at least two ports for connecting to a fiber optic connector. Each of the ports is provided with a light shielding plate. An elastic member is shared between every two adjacent light shielding plates, and configured to support the every two adjacent light shielding plates to shield ports corresponding to the every two adjacent light shielding plates. In the present disclosure, by sharing the elastic member, which is configured to support the every two adjacent light shielding plates to shield the ports corresponding to the every two adjacent light shielding plates, between the every two adjacent light shielding plates, each of the light shielding plates of the ports of the adapter can be independently opened or closed.

Abstract: An outdoor rated ingress protected one-piece adapter with a first and second end. First end accepts a fiber optic adapter configured to accept a LC, SN, CS, SC or MPO fiber ferrule assembly. A second end accepts a cable gland assembly that secures a cable therein. The first end is configured to accept an outdoor rated connector having a fiber connector therein. The connector/adapter assembly is rated for outdoor use.

Abstract: A fiber optic connector is disclosed that includes a plug body having a plug end and a connector core that mounts within the plug body. The connector core includes a ferrule subassembly including a ferrule, a ferrule hub that attaches to the ferrule, a spring holder and a connector spring. The ferrule sub-assembly is assembled with the connector spring pre-compressed to an initial compressed state prior to mounting the connector core within the connector body. The plug body and the core are configured such that the connector spring is moved from the initial compressed state to a final compressed state when the connector core is loaded in the plug body. In certain examples, tuning features can be integrated into the connector core.

Abstract: A fiber optic connector includes a positioning member formed with two installation holes and two guiding grooves, two central rods and a locking member. The locking member has two guiding portions and is operable to move relative to the positioning member between a locking position, where each of the guiding portions extends into an intersection of the corresponding guiding groove and the corresponding installation hole to engage an annular groove of the corresponding central rod for restricting movement of the central rods along the installation holes, and an open position, where the guiding portions are disengaged from the annular grooves, thereby allowing the central rods to move along the installation holes.

Abstract: A fiber optic connector includes a main body and two springs. The main body includes an end wall disposed at a rear end thereof, and two side walls extending from the end wall. Each side wall is formed with a mounting groove and a blocking end disposed at a front end of the mounting groove. The end wall has two positioning holes respectively facing the mounting grooves of the side walls. Each of the springs has a front end abutting against the sleeving unit, a main helical portion, and an extended portion extending from a rear end of the main helical portion into a corresponding one of the positioning holes, so that the springs is positioned between the end wall and the blocking end of a corresponding one of the side walls.

Abstract: A fiber optic cable and connector assembly including a fiber optic connector mounted at the end of a fiber optic cable. The fiber optic connector includes a ferrule assembly including a stub fiber supported within a ferrule. The stub fiber is fusion spliced to an optical fiber of the fiber optic cable at a location within the fiber optic connector.

Abstract: Embodiments relate to the field of optical communications technologies. The bi-directional optical sub-assembly includes a transmitter optical path sub-assembly, a receiver optical sub-assembly, a wavelength division multiplexing sub-assembly, and an optical fiber interface.

Abstract: A ferrule-to-lens latch mechanism includes a cover movable with respect to a housing of an optical assembly between an open position in which a cavity defined by the housing is visible and a closed position in which the cavity is covered by the cover. A lens is positioned in the cavity and has one or more guide pins which are visible when the cover is in the open position prior to mating a ferrule to the lens. A spring clip coupled to the housing and positioned in the cavity is configured to allow insertion and removal of the ferrule from the cavity when the cover is in the open position and may bias the ferrule against the lens when the ferrule is mated to the lens. When the ferrule is mated to the lens, the cover may cooperate with the spring clip to inhibit removal of the ferrule.

Abstract: Disclosed is a plug-in connector module having at least one optical waveguide and at least one optical sensor, preferably a photodiode, which is arranged near the optical waveguide. The optical sensor can reliably detect malfunction of the plug-in connector module in good time. Also disclosed is a method for detecting signal losses during signal transmission in an optical plug-in connector module, in which an optical signal is guided through at least one optical waveguide of the plug-in connector module, and the optical signal is scattered in the event of a structural defect of the optical waveguide or dirt on the front surface of the optical waveguide, the scattered light reaching a photodiode and a current or a voltage being produced thereby on the photodiode. If a threshold value of the current or the voltage on the photodiode is exceeded, an interference signal is generated by an electronic evaluation system.

Abstract: A photodetector includes: a substrate; an optical fiber disposed on the substrate; and a photodetection element fixed to the substrate, and that detects scattered light of light guided by the optical fiber. The photodetector further includes: a first fixing member and a second fixing member that fix the optical fiber to the substrate.

Abstract: An optical cable includes a plurality of deformable buffer tubes. Each of the plurality of deformable buffer tubes includes a plurality of flexible ribbons, and each of the flexible ribbons includes a plurality of optical fibers. Each of the plurality of deformable buffer tubes has a non-circular cross-section. An outer jacket surrounds the plurality of deformable buffer tubes.

Abstract: A fiber distribution hub (FDH) provides an interface between an incoming fiber and a plurality of outgoing fibers. The FDH includes a cabinet, at least one door pivotably mounted to the cabinet, and a frame pivotably mounted within the cabinet. The doors wrap around the sides and the front of the cabinet to provide access to both the front and sides of the frame when the doors are open. The frame can pivot out of the cabinet through the open doors to enable access to the rear of the cabinet and the rear side of the frame. The frame includes a termination region and a splitter region. The frame can include a storage region and/or a pass-through region.

Abstract: The present disclosure provides an optical cable. In an embodiment, the optical cable includes an elongated member comprising a matrix material and a plurality of channels extending through the matrix material. The optical cable also includes at least one optical fiber extending through at least one channel.

Abstract: The present invention relates to a pre-terminated (pre-terminated) optical fibre cable assembly (10,90), which is configured to be installed through a duct (20). The pre-terminated optical fibre construction (10,90) includes at least one optical fibre (46). A protective sleeve (26) is added to the optical fibre (46) before adding a terminal connector (24) to the leading end of at least one optical fibre (46). The protective sleeve (26) extends from behind the terminal connector (24) along part of the length of the optical fibre (46). When the cable is installed through a duct, the protective sleeve protects the portion of the fibre that protrudes from the end of the duct, for example in a communications cabinet (16). A residual length (28) of the protective sleeve remains within the duct. Terminal connectors and protective sleeves can be applied at both ends of the cable assembly, or only one end.

Abstract: A fibre optic accessory for attachment to the end of an optical fibre is described, the fibre optic accessory comprising a plurality of grooves extending longitudinally along a portion of its outer surface. Using this accessory, an optical fibre to which this accessory is affixed may be installed in an installation tube with the use of a source of compressed air. A kit of parts for such an installation, an optical fibre and a method of installation are also described.

Abstract: A telecommunications assembly including a housing and a plurality of modules mounted within the housing. The modules includes a rear face in which is mounted at least one fiber optic connector. Within an interior of the housing are positioned at least one fiber optic adapters. Inserting the module through a front opening of the housing at a mounting location positions the connector of the module for insertion into and mating with the adapter of the housing. The adapters within the interior of the housing are mounted to a removable holder. A method of mounting a telecommunications module within a chassis.

Abstract: The present disclosure provides an optical waveguide cable. The optical waveguide cable includes one or more optical waveguide bands positioned substantially along a longitudinal axis of the optical waveguide cable. The optical waveguide cable includes one or more layers substantially concentric to the longitudinal axis of the optical waveguide cable. The one or more layers include a cylindrical enclosure. The one or more optical waveguide bands include a plurality of light transmission elements. The density of the cylindrical enclosure is at most 0.935 gram per cubic centimeter. The optical waveguide cable has a waveguide factor of about 44%. The one or more optical waveguide bands are coupled longitudinally with the cylindrical enclosure.

Abstract: A lens unit includes a lens barrel having a barrel wall and a snap groove surrounded and formed by the barrel wall; and a first lens group snap-fitted and secured in the snap groove, wherein the first lens group has a light-incident end on which external light incidents; the light-incident end protrudes from an end surface of the barrel wall; and the first lens group includes at least one lens.

Abstract: A topographical measurement system uses an imaging cartridge formed of a rigid optical element and a clear, elastomeric sensing surface configured to capture high-resolution topographical data from a measurement surface. The imaging cartridge may be configured as a removable cartridge for the system so that the imaging cartridge, including the rigid optical element and elastomeric sensing surface can be removed and replaced as a single, integral component that is robust/stable over multiple uses, and easily user-replaceable as frequently as necessary or desired. The cartridge may also usefully incorporate a number of light shaping and other features to support optimal illumination and image capture.

Abstract: The proposed invention relates to a camera module with an optical image stabilization function. A flexible printed circuit board (FPCB) electrically connected to an image sensor is implemented to serve as an electrical path and at the same time, serve to provide an elastic restoring force in directions of a plurality of axes, thereby further miniaturizing and lightening the camera module.

Abstract: An imaging structure for a portable electronic device is disclosed. The imaging structure may include a housing with an opening for obtaining an external light. The structure may include a reflective module having a first reflective surface and a second reflective surface for reflecting the external light. The reflective module includes a linear movement switching mechanism configured to move the reflective module in a linear direction inside of the housing.

Abstract: Provided are a lens drive motor, a camera and a mobile terminal apparatus. The lens drive motor includes a housing, a lens support, a coil and a magnet component; the coil is wrapped around the lens support and is provided in the housing; the magnet component is provided between the housing and the lens support, wherein a portion, corresponding to the magnet component, of the housing is made of a first material, and other portions of the housing are made of a second material; and a magnetic conductivity of the second material is smaller than a magnetic conductivity of the first material. A problem of insufficient driving force of the lens drive motor in a related technology is solved by the present disclosure.

Abstract: A lens moving apparatus, including a bobbin; a first coil mounted at an outer circumference of the bobbin; a first magnet moving the bobbin in a first direction parallel to an optical axis by interaction with the first coil; a housing supporting the first magnet; an upper elastic member disposed at a top surface of the bobbin and at a top surface of the housing; a lower elastic member disposed at a bottom surface of the bobbin and at a bottom surface of the housing; and first and second winding protrusions disposed with being opposite to each other, the first coil being wound on the first and second winding protrusions.

Abstract: Provided are a lens drive motor, a camera and a mobile terminal apparatus. The lens drive motor includes a housing, a lens support, a coil and a magnet component; the coil is wrapped around the lens support and is provided in the housing; the magnet component includes multiple sub-magnets; the multiple sub-magnets are sequentially arranged around a circumferential direction of the coil and are positioned in the housing, wherein each of at least two first sub-magnets of the multiple sub-magnets is of a bent type structure; multiple straight edge segments and multiple corner segments connecting the multiple straight edge segments are included at an outer periphery of the lens support; and outsides of the multiple straight edge segments are covered by the multiple sub-magnets. According to the lens drive motor, a problem of insufficient driving force of the lens drive motor in the related art is solved.

Abstract: An optical system according to an example embodiment includes a first lens unit that has a positive refractive power, and a second lens unit that is disposed on an image side of the first lens unit and that has a positive refractive power. The second lens unit moves when focusing from infinity to an object at near distance. The second lens unit includes, disposed in order from the object side towards an image side, a first positive lens, an aperture stop, and a second positive lens. Anomalous partial dispersibilities of the first positive lens and the second positive lens are defined.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens having negative refractive power; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof.

Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having negative refractive power; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof.

Abstract: An imaging lens includes a stop; a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having positive refractive power; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a shape so that a surface thereof directing to the image plane side is concave near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof.

Abstract: An image capturing lens system includes, in order from an object side to an image side, a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, a second lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, a third lens element with positive refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, and a fourth lens element with negative refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof.

Abstract: A photographing optical lens assembly includes eight lens elements, the eight 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, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side. At least one surface of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens assembly is aspheric and includes at least one inflection point.

Abstract: An optical imaging system includes a first lens having a positive refractive power, an image-side surface of the first lens being concave, a second lens, a third lens, an image-side surface of the third lens being concave, a fourth lens, a fifth lens, an image-side surface of the fifth lens being concave, and a sixth lens having a positive refractive power and having an inflection point formed on an image-side surface, wherein an F number of the optical imaging system is lower than 2.2.

Abstract: An optical imaging system includes: a first lens having a concave image-side surface; a second lens having refractive power; a third lens having a concave image-side surface; a fourth lens having a concave object-side surface or a convex image-side surface; a fifth lens having refractive power; a sixth lens having a concave image-side surface; and a seventh lens having negative refractive power. The first to seventh lenses are sequentially disposed from an object side and 1.62<(N2+N5+N6)/3, where N2 is a refractive index of the second lens, N5 is a refractive index of the fifth lens, and N6 is a refractive index of the sixth lens.

Abstract: There is provided a camera module including a first lens substrate having a light-incident side. The first lens substrate includes a lens disposed at an inner side of a through-hole of the first lens substrate, and a wiring layer disposed at an opposite side of the light-incident side of the first lens substrate. The camera module may include an imaging element including a pixel array disposed at a light-incident side of a substrate, where the imaging element is electrically connected to the wiring layer of the first lens substrate, and where a width of the imaging element in a direction parallel to the light-incident surface of the imaging element is smaller than a width of the first lens substrate in the direction parallel to the light-incident surface of the first lens substrate.

Abstract: The imaging optical system consists of first and second optical systems in order from a magnified side. The second optical system forms an image on an image display surface as an intermediate image. The first optical system forms the intermediate image on a magnified-side conjugate plane. A height H of a principal ray of light having a maximum angle of view becomes maximum on a lens surface of the whole system (having focal length f) on the most magnified side, among heights of principal rays of light having a maximum angle of view on respective lens surfaces, satisfying predetermined Conditional Expressions (1) and (2): 0.03<H×|f|/(L×I)<0.09??(1) 0.35<I/dl??(2) Where L is an optical axis distance between lens surfaces on the most magnified and reduced sides, I is a reduced side maximum image height, and dl is a maximum air spacing on the optical axis within the system.

Abstract: The present invention provides a reflective wide-angle lens having a large aperture (for example, FNO 1.7) and a small projection ratio (for example, TR?0.2). The reflective wide-angle lens reduces lens size and reduces the number of lenses required while achieving a clear focus on a wide range of screen sizes. The reflective wide-angle lens comprises a front lens group and a rear lens group. The front lens group comprises a first lens group and two second lens group. The rear lens group comprises a curved mirror. The first lens group comprises at least a triple cemented lens, an aspherical lens, and two spherical lenses. The second lens group comprises at least two aspherical lenses and two spherical lenses. The curved mirror is a concave optical symmetric aspheric mirror.

Abstract: An arrangement for TIRF microscopy, having an illumination optical unit with an illumination objective for illuminating a specimen on a specimen carrier in a specimen plane via an illumination beam path. An optical axis of the illumination objective includes an illumination angle that differs from zero with the normal of the specimen plane. A detection optical unit with a detection objective in a detection beam path includes a detection angle that differs from zero between an optical axis thereof and the normal of the specimen plane. A transition element between the specimen carrier and both objectives is arranged both in the illumination beam path and in the detection beam path. The transition element corrects aberrations that arise on account of the passage through media with different refractive indices of radiation to be detected and/or radiation for illuminating the specimen.

Abstract: An endoscope including an image pickup module in a distal end section, wherein the image pickup module including an image pickup unit including an image pickup device, a light emitting element configured to emit an optical signal from a light emission surface, and a ferrule disposed in the image pickup unit, in which the light emission surface is inclined at a first angle of not less than 35 degrees nor more than 55 degrees to the distal end section central axis, a fiber distal end portion is inclined at a second angle of not less than 35 degrees nor more than 55 degrees to the distal end section central axis, and the optical fiber extends toward the distal end section central axis, and is arranged along a bending section central axis in a bending section.

Abstract: An optical module includes: an optical element having a light emitting portion for emitting optical signals, and an external electrode on a top face; a wiring board having a connection electrode bonded to the external electrode of the optical element on the first main face, and having a through hole serving as an optical path of the optical signals; an optical fiber for transmitting the optical signals arranged at a position coupled optically to the optical element; a resin layer sealing a bonding portion between the external electrode and the connection electrode, constituting a wall surrounding the optical path; and transparent resin filling the optical path. The transparent resin is expanded around the resin layer via at least one gap of the resin layer.