Abstract: An image acquisition device sub-module comprising a linear light source assembly, a lens array, and a sub-module housing is disclosed. Conductive spring pins of a light emitting diode (LED) light source module of the linear light source assembly provide a conductive electrical pathway between the LEDs and a printed circuit board (PCB) of the sub-module housing. The conductive spring pins eliminate need for soldering the LED light source module to the PCB. A plurality of clips on the sub-module housing holds the linear light source to the sub-module housing. A plurality of clamps on the sub-module housing holds the lens array to the sub-module housing. The clips and clamps eliminate need for adhesive to hold the linear light source, the lens array, and the sub-module together.

Abstract: Optical waveguide cores having refractive index profiles that vary angularly about a propagation axis of the core can provide single-mode operation with larger core diameters than conventional waveguides. An optical waveguide includes a core that extends along a propagation axis and has a refractive index profile that varies angularly about the propagation axis. The optical waveguide also includes a cladding disposed about the core and extending along the propagation axis. The refractive index profile of the core varies angularly along a length of the propagation axis.

Abstract: An optical fiber having at least two polymer coatings, the optical fiber comprising: an optical fiber comprising a glass optical core and a glass cladding; a first polymer coating comprising a silicone polymer covering the optical fiber; and a second polymer coating covering the first polymer coating is provided.

Abstract: Coated optical fibers and uses of such fibers as sensors in high temperature and/or high pressure environments. The coated optical fiber has improved sensing properties at elevated pressure and/or temperature, such as enhanced acoustic sensitivity and/or a reduced loss in acoustic sensitivity. The use of the coated optical fibers in various sensing applications that require operation under elevated pressure and/or temperature, such as, acoustic sensors for various geological, security, military, aerospace, marine, and oil and gas applications are also provided.

Abstract: The optical waveguide includes: a lower clad layer, a core layer, an upper clad layer, a substrate, and a mirror, the lower clad layer, the core layer, and the upper clad layer being sequentially laminated to the substrate, the mirror being formed on the core layer, in which the substrate has an opening, the maximum diameter of the opening is larger than that of luminous flux reflected by the mirror, and the maximum diameter of the opening is 240 ?m or less. The optical waveguide is capable of transmitting a light signal regardless of the type of the substrate, suppressing the spread of a light signal reflected from the mirror, and transmitting a light signal with a low optical transmission loss.

Abstract: A photonic integrated circuit (PIC) comprises an optical switch, a plurality of input edge couplers comprising a first input edge coupler and coupled to the optical switch, a plurality of input surface grating couplers (SGCs) comprising a first input SGC and coupled to the optical switch, a plurality of output edge couplers comprising a first output edge coupler and coupled to the optical switch, and a plurality of output SGCs comprising a first output SGC and coupled to the optical switch. A method of fabricating a PIC comprises patterning and etching a silicon substrate to produce a first optical switch, a first surface grating coupler (SGC) coupled to the first optical switch, and a first edge coupler coupled to the first optical switch.

Abstract: An optical signal processing apparatus using a planar lightwave circuit (PLC) with a waveguide-array structure includes a PLC board including a waveguide-array structure, a cylinder lens for collimating optical signals emitted and output from the PLC board into parallel beams, a condenser lens for condensing, for each channel, optical signals output by passing through the cylinder lens, and a light receiving element for receiving optical signals condensed on at least one channel from the condenser lens and converting the optical signals into electrical signals, wherein the PLC board divides an optical signal input thereto into a plurality of different optical signals and outputs the optical signals at different propagation angles.

Abstract: A holding system for laser cleaving an optical fiber. The holding system includes a support structure located at least partially within a laser cleaving device. The support structure has an exterior surface with a first aperture formed there through. It also has a holding member including a first surface accessible through the first aperture and a second surface opposite the first surface. The holding member defines a second aperture extending from the first surface to the second surface for receiving a corresponding mounted optical fiber. The system also includes a pivot mechanism pivotally coupling the holding member to the support structure. The holding member is pivotable relative to the support structure and a cutting plane of the laser cleaving device to provide a plurality of cleaving angles between the cutting plane and the optical fiber.

Abstract: A double mirror (Mi) of a light-guiding device of the present invention is made of (i) a first mirror (Mi1) that is mounted on a top surface of a base plate (B) and has a reflective surface (S1) entering an input beam reflected by the reflective surface (S1) and (ii) a second mirror (Mi2) that is mounted on a top surface of the first mirror (Mi1) and is a prism having a reflective surface (S2) reflecting the input beam that has been reflected by the reflective surface (S1), the input beam reflected by the reflective surface (S2) being totally reflected inside the prism.

Abstract: An apparatus including a passive wavelength division multiplexing (WDM) demultiplexer (DeMUX) or a passive WDM multiplexer (MUX), an active photo diode (PD) array or an active laser diode (LD) array, and a compressing device disposed between the passive WDM DeMUX or the passive WDM MUX and the active PD array or the active LD array. The compressing device changes the optical spot pitch of the passive WDM DeMUX or the passive WDM MUX o match the pitch of the active PD array or the active LD array. A compression ratio can be adjusted by changing the incident angle of the incident beam to the compressing device.

Abstract: Apparatuses and methods for tuning and switching between optical components are provided. The apparatuses and methods may be used in the context of optical communication. An example apparatus may include a first optical path having a first tunable component and a second optical path having a second tunable component. The apparatus may also include a first switch component for selectively connecting the first optical path to an output, and a second switch component for selectively connecting the second optical path to the output. The first and second switch components may be semiconductor optical amplifiers (SOAs). The apparatus may have a controller that controls the first switch component and the second switch component to select which optical path is connected to the output and controls tuning of the tunable component in the optical path that is not connected to the output.

Abstract: An apparatus and method for tuning optical components are provided. The apparatus and method may be used for wavelength selection in the context of optical communication. An example apparatus may include a plurality of tunable components, each having an optical output. The apparatus may also include a switch that during each period of a plurality of periods has a switch output that contains a selected one of the optical outputs. The apparatus may operate such that during each period of the plurality of periods, at least one of the tunable components other than the tunable component having the selected optical output is available for tuning.

Abstract: Optical connectors may include various portions, or structures, to provide a plurality of degrees of movement to optical ferrules. The optical ferrules may be linearly movable along one or more axes and rotationally moveable about one or more axes for alignment and coupling to corresponding optical ferrules. The optical connectors may be integrated with, or in conjunction with, other non-optical connectors such as electrical connectors, e.g., located on a drive carrier.

Abstract: A fiber optic ferrule with rear holes and a guide pin clamp allows for changing guide pins in the field. The guide pin clamp has a forward clamp portion to engage the rear face of the fiber optic ferrule, a rearward clamp portion configured to engage the biasing spring, and a guide pin retaining plate. The guide pin retaining plate is movable from a first position to a second position to allow for the removal or insertion of guide pins.

Abstract: A fiber optic cable assembly includes a fiber optic cable and a fiber optic connector. The cable includes a jacket having an elongated transverse cross-sectional profile that defines a major axis and a minor axis. Strength components of the cable are anchored to the connector. The fiber optic connector includes a multi-fiber ferrule defining a major axis that is generally perpendicular to the major axis of the jacket and a minor axis that is generally perpendicular to the minor axis of the jacket. Certain types of connectors include a connector body defining a side opening that extends along a length of the connector body; a multi-fiber ferrule configured for lateral insertion into the connector body through the side opening; and a cover that mounts over the side opening after the multi-fiber ferrule has been inserted into the connector body through the side opening.

Abstract: Provided is a method for constructing an optical splitter including a management terminal connected with a device sends a first instruction to a guide port of the device, wherein the first instruction is used for instructing to turn on a light of the guide port of the device; the guide port is determined according to the light of the guide port, and an optical splitter to be constructed is determined according to an optical splitter tail fiber plugged into the guide port; the management terminal sends a second instruction to a port to be constructed of the device, wherein the second instruction is used for instructing to turn on a light of the port to be constructed of the device; and a tail fiber of the optical splitter to be constructed is plugged into the port to be constructed according to the light of the port to be constructed.

Abstract: A fiber coupler is provided, which includes a tubular enveloping structure and several optical fibers arranged in the enveloping structure, each of which has a fiber core and a fiber cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fiber core to the diameter of the fiber cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fiber to the diameter of the fiber core, increases in the first direction for each optical fiber.

Abstract: Disclosed are optical receptacles for use with electronic devices. In one embodiment, the optical receptacle comprises an optical lens body for receiving and transmitting optical signals and the optical lens body comprising a front face with a recess and a total internal reflection (TIR) surface. A cover is disposed in the recess of the optical lens body for protecting a surface of the optical lens body and also provides a cleanable surface. The optical receptacle also includes a receptacle shell with an open side for housing the optical lens body. and a cover disposed in the recess of the optical lens body.

Abstract: An imprinting method for forming an integrated optical coupling device on wafer level may include: providing a substrate, with a reflection coating disposed thereon; providing an imprinting mold, with void regions shaped according to a designed lens profile; forming a molding material on the substrate; pressing the imprinting mold on the molding material on the substrate; curing the molding material into a cured molding material; removing the imprinting mold; depositing an anti-reflection film on the cured molding material; and dicing to form an integrated optical coupling device.

Abstract: A flat optical fiber cable assembly includes a flat optical fiber cable having an optical fiber cord and at least one tension wire, and a reinforcement mechanism having a reinforcing sleeve sleeved on the at least one tension wire, and a reinforcing body having an outer surface, a through groove indented inwardly from the outer surface, and a positioning groove that is indented inwardly from the outer surface, that is angularly spaced apart from the through groove and that has an engaging portion. The optical fiber cord is inserted into the through groove, and the at least one tension wire is inserted into the positioning groove with the reinforcing sleeve engaging the engaging portion.

Abstract: The present invention relates to various flexible hybrid cables transmitting data through two or more different transmission mechanisms, e.g., one mechanism utilizing electromagnetic energy (e.g., lights), another mechanism utilizing electrical energy (e.g., electrical voltages or currents), and so on. More particularly, the present invention relates to the flexible hybrid cables incorporating various planar cable units so that such cables are elongated in their cross-sections, are rather flexible, and are more conveniently stored and installed. The present invention also relates to various methods of manufacturing the flexible hybrid cables, to various methods of using such flexible hybrid cables, and to various methods of incorporating conventional electrical cables (or optical fibers) thereinto.

Abstract: A disclosed example embodiment includes a composite slickline cable having an optical fiber with optimized residual strain. The composite slickline cable includes a fiber reinforced polymer and at least one optical fiber disposed within the fiber reinforced polymer such that axial stress applied to the composite slickline cable is shared by the at least one optical fiber and the fiber reinforced polymer. In the axially unstressed state of the composite slickline cable, the at least one optical fiber has a residual strain between about ?1,000 microstrain and about 500 microstrain.

Abstract: An enclosure includes a housing and a sealing unit that fits within a sealing unit opening of the housing. The sealing unit provides a seal around cable ports and provides a peripheral seal between the housing and the sealing unit. The sealing unit can include a sealant arrangement and an actuation arrangement for pressurizing the sealant arrangement within the sealing unit opening. The actuation arrangement can include inner and outer pressurization structures between which the sealant arrangement is positioned. The actuation arrangement includes first and second actuators each movable between a non-actuated position and an actuated position. When the first and second actuators are moved towards the actuated positions, the first and second actuators generate first and second seal pressurization forces that press the sealant arrangement between the first and second pressurization structures, and the first and second seal pressurization forces are transferred through respective first and second springs.

Abstract: The present disclosure illustrates to a fiber module rack system in which a rack includes receiving spaces which each is formed by two frame plates of a base panel. Shell bodies of fiber optic cassettes are mounted in the receiving spaces, and a fiber module is disposed at a front part of the shell body, and a resilient locking member is disposed between the sliding track and at least one side of the shell body, so that the user can quickly and easily dismount the fiber optic cassettes from the rack without using tool.

Abstract: A cable assembly includes a distribution cable, a tether cable, and a network access point (NAP) assembly having a cavity defined therein. The distribution cable includes optical fibers and the tether cable includes an optical fiber. The optical fiber of the tether cable is tightly constrained within the tether cable and portion thereof extends from the tether cable into the cavity of the NAP assembly and is spliced to a portion of one of the optical fibers of the distribution cable extending into the cavity of the NAP assembly from a side of the distribution cable. The splice is positioned in the cavity. Tight constraint of the optical fiber of the tether cable within the tether cable limits transmission of fiber movement to the portion of the optical fiber of the tether cable extending into the cavity of the NAP assembly, thereby protecting the splice.

Abstract: A plastic barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion includes an object-end surface and an object-end hole, wherein the object-end surface includes a plurality of annular grooves, which are disposed coaxially to a central axis, and each of the annular grooves includes a stepped surface. The image-end portion includes an image-end opening. The tube portion connects the object-end portion and the image-end portion.

Abstract: A barrel comprises a cylinder wall, two parting lines, and an external thread. The external thread is intersected by the two parting lines respectively, and the external thread includes a plurality of threads. The plurality of threads are connected spirally and each of the threads includes a pair of normal thread portion and a pair of shrinking thread portion. Each of the normal thread portions includes a normal thread crest and a normal thread root. The plurality of shrinking thread portions are intersected by the parting lines respectively, and each of the shrinking thread portions includes a middle location intersected by one of the parting lines, a shrinking thread crest, and a shrinking thread root. The outer diameter of each of the shrinking thread crests reaches a minimum at the middle location, and the minimal width of the shrinking thread crest is smaller than the normal crest outer diameter. The width of each of the shrinking thread crests is larger than the normal crest width.

Abstract: The invention relates to a binocular telescope with two lens barrels, which for focusing comprise axially displaceable focusing means, and with a joint focusing device, wherein the focusing device comprises a housing and a rotary knob and the rotary knob is axially displaceable on the housing, wherein the rotary knob is rotatably coupled in a focusing position to a focusing gear and is rotatably coupled in a diopter balancing position to a diopter gear, wherein the rotary knob comprises a locking mechanism for fixing the rotary knob in the focusing position.

Abstract: The imaging lens substantially consists of a first lens group having a positive refractive power and a second lens group having a positive refractive power, in which the entire second lens group moves along the optical axis to perform focusing. In the imaging lens, the first lens group comprises a positive first lens, a negative second lens, a negative third lens, a positive fourth lens, and a positive fifth lens in this order from the object side. When the Abbe number of the second lens with respect to the d-line is vd2 and the Abbe number of the third lens with respect to the d-line is vd3, conditional formula (1) below is satisfied: 2.0<vd2/vd3??(1).

Abstract: An imaging lens assembly includes, in order from an object side to an image side, a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element with positive refractive power. The first lens element has a convex image-side surface in a paraxial region. The second lens element has a concave object-side surface and a convex image-side surface in a paraxial region, and at least one of its surfaces is aspheric. The object-side surface of the third lens element is convex in a paraxial region and concave in a peripheral region. The image-side surface of the third lens element is concave in a paraxial region. The object-side surface and image-side surface of the third lens element are both aspheric. The imaging lens assembly satisfies 0.062 mm<D<0.091 mm, where D represents the maximum effective focus shifts range under all the defocus curves at 0.4 modulus of the OTF (optical transfer function).

Abstract: A camera lens includes, lined up from the object side to the image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, and a fourth lens with negative refractive power. The camera lens satisfies specific conditions.

Abstract: A camera lens includes, lined up from the object side to the image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, and a fourth lens with negative refractive power. The camera lens satisfies specific conditions.

Abstract: An imaging lens is constituted by, in order from the object side to the image side, a positive first lens group, a negative second lens group, and a positive third lens group. During focusing operations, the first lens group and the third lens group are fixed, while the second lens group moves. The first lens group has a cemented lens formed by cementing a positive lens and a negative lens together. The second lens group is constituted by two or fewer lenses. The third lens group is constituted by three or more lenses. The surface toward the object side of at least one of the first and second lenses from the object side within the third lens group is concave. A negative lens having a concave surface toward the object side is provided most toward the image side. A predetermined conditional formula is satisfied.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises an aperture stop and five lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least one inequality, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens may comprise an aperture stop and five lens elements positioned sequentially from an object side to an image side. By controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least two inequalities, the optical imaging lens may exhibit better optical characteristics and the total length of the optical imaging lens may be shortened.

Abstract: A camera lens includes, lined up from the object side to the image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power. The camera lens satisfies specific conditions.

Abstract: A camera lens includes, lined up from the object side to the image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power. The camera lens satisfies specific conditions.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: An optical photographing lens assembly includes, 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 and a fifth lens element. The first lens element has refractive power. The second lens element has positive refractive power. The third lens element with positive refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are aspheric, and at least one of the surfaces of the fifth lens element has at least one inflection point. The optical photographing lens assembly has a total of five lens elements with refractive power.

Abstract: An imaging lens includes a first lens group having positive refractive power; a second lens group having positive refractive power; and a third lens group having negative refractive power, arranged in this order from an object side to an image plane side. The first lens group includes a first lens having positive refractive power, a second lens, and a third lens. The second lens group includes a fourth lens having positive refractive power and a fifth lens having negative refractive power. The third lens group includes a sixth lens and a seventh lens having negative refractive power. The seventh lens is formed in a shape so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii. The surface of the seventh lens on the image plane side is formed in an aspheric shape having at least one inflexion point.

Abstract: Fabricating a wafer-scale spacer/optics structure includes replicating optical replication elements and spacer replication sections directly onto an optics wafer (or other wafer) using a single replication tool. The replicated optical elements and spacer elements can be composed of the same or different materials.

Abstract: An optical element is constituted of a polygonal column-shaped transparent body which has four inner wall surfaces that surround a rectangular column-shaped space having a square-shaped opening when seen in a plan view, four outer wall surfaces that are respectively parallel to the inner wall surfaces, and two outer wall surfaces which are perpendicular to a diagonal line of the square-shaped opening and face each other, in which the distance between the two outer wall surfaces facing each other is longer than the diagonal line.

Abstract: A chromatic point sensor (CPS) system is provided, which compensates for potential errors due to input spectral profile intensity inconsistencies that arise when driving a CPS illumination source using different power levels. The CPS system includes an optical pen comprising a confocal optical path including a chromatically dispersive element and configured to focus different wavelengths at different distances proximate to a workpiece surface to be measured, an illumination source, and CPS electronics.

Abstract: Provided is a microscope provided with: a scanner that scans an excitation beam coming from a light source; an objective optical system that focuses the scanned excitation beam onto a sample and that collects fluorescence generated at individual scanning positions in the sample; a detector that detects the collected fluorescence; a light blocking member that is disposed between the detector and the system and that partially blocks the collected fluorescence; a switching portion that switches the positional relationship between the member and a light-focusing point of the excitation beam in the sample between an optically conjugate positional relationship, in which an in-focus fluorescence generated at the light-focusing point passes through the member, and a non-conjugate positional relationship, in which the in-focus fluorescence is blocked by the member; and a computing portion that computes a difference between fluorescence signals acquired by the detector in the two positional relationships.

Abstract: A microscope optical system includes a first lens group having a positive power, a second lens group, and a third lens group including a positive lens. The first lens group includes: a first lens component arranged closest to an object, the first lens component including a first meniscus lens that has a meniscus shape with a concave surface facing the object side; a second lens component having a positive power that has a meniscus lens shape with the concave surface facing the object side; and a cemented lens including a positive lens and a negative lens that is made of a higher-dispersion material than a material of the positive lens. When NA, ?G3, DG3i, DG23 represent a numerical aperture of the microscope optical system, a lateral magnification of the third lens group, a spacing between the third lens group and an image plane, a spacing between the second lens group and the third lens group, the microscope optical system satisfies the following conditional expressions: 0.25<NA?1.51 ??(1); 0.

Abstract: The cell imaging control device includes a cell detection unit 22 that acquires a cell image by imaging transmitted light or reflected light of undyed cells and detects the cells or structures in the cells in the cell image and an autofocus control unit 24 that calculates an autofocus evaluation value based on image information of the cells or the structures detected by the cell detection unit 22 and outputs an autofocus control signal based on the autofocus evaluation value to an imaging device for capturing the cell image, which is an imaging device having an autofocus function.

Abstract: The present disclosure relates optical imaging devices and methods useful in biological and medical imaging applications. In one embodiment, an optical imaging device includes a flexible lightguide having a first end and a second end, the output of the source of pulsed infrared radiation being optically coupled to the first end of the flexible lightguide; a lens assembly attached to and optically coupled to the second end of the flexible lightguide, the lens assembly comprising a variable-focus lens element, the a variable-focus lens element having a tunable focal length; and a photodetector coupled to the flexible lightguide to detect radiation propagating from the second end toward the first end of the flexible lightguide. The optical imaging devices and methods can be used in both confocal and multi-photon techniques.

Abstract: An endoscope includes: a bending portion; a flexible tube portion provided on a proximal end side with respect to the bending portion; a plurality of bending wires inserted through the flexible tube portion and configured to bend the bending portion; a plurality of coil pipes through which the bending wires are respectively inserted; a connecting member provided on a distal end side of the flexible tube portion; and a coil pipe retaining member provided on a distal end side with respect to the connecting member, and including a plurality of holes for bending wires which respectively allow the bending wires to pass through, the coil pipe retaining member being configured to retain distal end portions of the plurality of coil pipes.

Abstract: An endoscope includes a bending portion, a flexible tube portion having a tubular flexible member, and a connecting member having a cylindrical shape, the connecting member being configured to connect a proximal end portion of the bending portion and a distal end portion of the flexible tube portion, and a distal end thin wall portion of the flexible member such as a flex in the flexible tube portion is held in a sandwiched manner by a double tube portion which forms a gap formed at a proximal end portion of the connecting member and having the cylindrical shape.