725results about "Bundled fibre light guide" patented technology

Methods of creating and using digital twins of vegetation / crops in relation to their growing environments. Some embodiments include creating a digital twin of the growing environment using sensor data from a subsurface sensor suite, creating a digital twin of the vegetation crop using data from an overhead sensor suite, and using at least one mathematical model to relate the digital twin of the crop to the digital twin of the growing environment. In some embodiments, the mathematical model(s) implement a root cause analysis that uses a limiting factor approach. In some embodiments, the subsurface sensor suite is on a multi-sensor soil probe. In some embodiments, the multi-sensor soil probe comprises a video microscope, a tip stress sensor, a sleeve stress sensor, and a volumetric- water-content sensor. Other related systems, devices, methods, and software are also disclosed.

Disclosed herein is autonomous vehicle charging station featuring self-cleaning contact points, power flow safety features, and electrical connection testing (meeting minimum performance thresholds) for safe and efficient power transfer from the charging station to the autonomous vehicle. After docking, power line modem (PLM) communications are established between the autonomous vehicle and the charging station via an electrical power connection resulting from the docking act as an initial test of connectivity, and then the electrical power connection is determined to be safe with non-lethal power flow before charging the autonomous vehicle.

The invention discloses an optical fiber transmission image recovery method and device based on a complex amplitude regulation metasurface diffraction device, and the method comprises the steps: obtaining the complex amplitude distribution of each diffraction layer through the training of a diffraction neural network, designing a corresponding metasurface array, and preparing a cascaded metasurface diffraction device with a complex amplitude regulation function, deploying a cascade metasurface diffraction device to the far end of the multimode optical fiber and performing complex amplitude modulation on emergent circularly polarized light to realize high-resolution or high-sampling-rate image recovery; or an optical fiber transmission inverse matrix is solved by using an analytical method, and a corresponding metasurface array is designed, so that the single-layer metasurface diffraction device with a complex amplitude regulation and control function is prepared; and deploying the single-layer metasurface diffraction device to the far end of the few-mode optical fiber and carrying out complex amplitude modulation on emergent circularly polarized light to realize low-resolution or low-sampling-rate image recovery. Miniaturization of a multimode optical fiber imaging system can be realized, and the image recovery quality is effectively improved based on complex amplitude modulation of the metasurface diffraction device.

A fiber-optic light guide is provided. The light guide includes plurality of optical fibers and an enveloping material. The plurality of optical fibers define a flexible fiber bundle. The flexible fiber bundle has a first diameter and a length along a longitudinal axis. The enveloping material encloses the plurality of optical fibers at one end of the flexible fiber bundle and over at least a part of the length to define a rigid portion. The plurality of optical fibers in the rigid portion are fused with one another. The flexible fiber bundle has a modified or formed cross-sectional geometry in a region of the enveloping material.

A camera optical lens includes from object side to image side: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens and seventh lens. Central curvature radius of object-side surface of fourth lens is R7, central curvature radius of image-side surface of fourth lens is R8, a field of view of camera optical lens is FOV, f-number of camera optical lens is FNO, total optical length from object-side surface of first lens to image plane of camera optical lens along optic axis is TTL, on-axis thickness of second lens is d3, focal length of sixth lens is f6, focal length of seventh lens is f7, and following relational expressions are satisfied: 1.00≤R7 / R8≤3.00; 80.00≤FOV / FNO≤120.00; 10.00≤TTL / d3≤20.00; −4.00≤f6 / f7≤−1.00. The camera optical lens has good optical performance such as large aperture and wide-angle.

The invention discloses a windable optical cable belt and a manufacturing method thereof, and the manufacturing method comprises the steps: distributing a plurality of parallel optical fibers in the same plane, so as to form an optical cable belt; a dispensing valve is adopted to carry out dispensing and bonding on the two adjacent optical fibers, intermittent dispensing is carried out in the first direction at a first preset interval so as to form bonding parts, and the two adjacent bonding parts of the optical cable belt in the second direction are distributed at a second preset interval in the first direction; and curing the bonding part of the optical cable tape, so that the upper surface of the cured bonding part is sunken downwards, and the lower surface of the cured bonding part is sunken upwards. According to the optical fiber manufacturing method, the adjacent optical fibers are bonded in a manner of carrying out interval dispensing at the first preset interval in the first direction, and the adjacent bonding parts in the second direction have the second preset interval in the first direction, so that compared with an existing optical fiber dipping method, the method has the advantages that the crimpability of an optical cable belt can be effectively improved; and the glue consumption can be reduced.

The invention relates to the technical field of optical communication, and discloses array lens and FA synchronous coupling equipment which comprises a carrying table mechanism, a carrying and dispensing mechanism is arranged on the rear side of the carrying table mechanism, and feeding mechanisms are arranged on the left side and the right side of the carrying table mechanism; the carrying table mechanism comprises a coupling carrying table, a substrate jig is arranged on one side of the coupling carrying table, and a lens jig is arranged on the other side of the coupling carrying table. The carrying and dispensing mechanism is used for carrying an optical module substrate and dispensing, the feeding mechanisms on the two sides are used for moving an array lens and an FA respectively, and then the coupling and mounting production process, needing to be repeated for multiple times, of an existing multi-channel lens is simplified to only need one-time coupling and mounting; the invention further discloses a synchronous coupling method, the FA is synchronously coupled in the lens coupling process through the synchronous coupling device, the two procedures are combined to be completed in one procedure, the production technology is simplified, and the production efficiency of the optical module is greatly improved.

A system includes an illumination system, an optical element, a switching element and a detector. The illumination system includes a broadband light source that generates a beam of radiation. The dispersive optical element receives the beam of radiation and generates a plurality of light beams having a narrower bandwidth than the broadband light source. The optical switch receives the plurality of light 5 beams and transmits each one of the plurality of light beams to a respective one of a plurality of alignment sensor of a sensor array. The detector receives radiation returning from the sensor array and to generate a measurement signal based on the received radiation.

The present invention relates to a beam guiding device (1) for guiding signal light radiation (A), comprising at least one fibre inlet element (11) which is designed to receive the signal light radiation (A), comprising at least one fibre outlet element (12) which is designed to emit the signal light radiation (A), and comprising a plurality of fibre elements (10) which are fixedly connected at one end to the fibre inlet element (11) and at the opposite end to the fibre outlet element (12) and are designed to guide the signal light radiation (A) from the fibre inlet element (11) to the fibre outlet element (12).

Provided is a multi-core fiber having an end surface whose inclination direction is appropriately set in consideration of connection. In a multi-core fiber (MF), inclination directions (v1, v2) of a first end surface (σ1) and a second end surface (σ2) are set so that, in a case where the first end surface (σ1) and the second end surface (σ2) are brought into contact with each other so as to minimize an angle made by an extending direction of cores (a1 to an) in the first end surface (σ1) and an extending direction of cores (a1 to an) in the second end surface (σ2), each of the cores (a1 to an) in the first end surface (σ1) at least partially overlaps any of the cores (a1 to an) in the second end surface (σ2).

A laser component includes a pump-signal combiner, which includes a first capillary, a plurality of pump fibers, a second capillary, and a signal fiber. The plurality of pump fibers, the second capillary, and the signal fiber are arranged in a bundle configuration. The bundle configuration is disposed within an internal portion of the first capillary. A cross-section of the bundle configuration includes an outer area, in which the plurality of pump fibers are disposed, and an inner area, in which the second capillary and the signal fiber are disposed. The signal fiber is disposed within an internal portion of the second capillary.

The invention discloses a hollow-core microstructure optical fiber ribbon and a preparation method thereof. The hollow-core microstructure optical fiber ribbon comprises a plurality of hollow-core microstructure optical fibers which are arranged side by side; the plurality of hollow-core microstructure optical fibers have the same end face structure and are coated with ribbon combining resin for fixing the positions of the hollow-core microstructure optical fibers; the plurality of anti-resonance microstructure units are distributed on the inner side of the glass sleeve; the glass sleeve is externally coated with the coating on the outermost side; the outermost coating is provided with at least one pair of parallel positioning surfaces; and the positioning surfaces of the adjacent hollow-core microstructure optical fibers are mutually registered and spliced, so that the plurality of hollow-core microstructure optical fibers which are arranged side by side are fixed in the ribbon combining resin in the same direction. According to the hollow-core microstructure optical fiber ribbon provided by the invention, the orientation of the hollow-core microstructure optical fiber is positioned through the non-circular optical fiber coating, and the optical fibers are arranged side by side through the parallel positioning surface, so that the end face orientations of all hollow-core structure optical fibers in the optical fiber ribbon are consistent, and therefore, the welding efficiency is improved, and the welding loss is reduced.

The invention relates to the field of optical devices, in particular to a manufacturing method of a multi-dimensional close packing optical fiber array, an optical fiber array device and an optical transmission assembly. According to the scheme, a preset number of same-specification optical fibers are selected; then, arranging the optical fibers layer by layer, and temporarily fixing the optical fibers in each layer at the middle position, far away from the end part by a specified length, of the optical fibers by adopting an adhesive tape; completely immersing the free end of each optical fiber into a solvent with strong volatilization and high surface tension, gradually pulling out and horizontally placing; thirdly, after the solvent is completely evaporated and all layers of optical fibers are gathered together, a specified amount of UV light curing adhesive is dropwise added to the outer portions of the optical fibers in the optical fiber arrangement area according to the preset width and cured; and finally, tearing off the adhesive tape and carrying out optical grinding and polishing on the end part of the cured and formed optical fiber to obtain the required multi-dimensional optical fiber array. According to the invention, the problems of high process difficulty and high cost of manufacturing the optical fiber array by a traditional V-shaped groove method are solved.

The utility model discloses a tool for assembling an optical fiber array by an optical fiber connector, which comprises a base provided with a mounting groove group and a clamping groove, the mounting groove group and the clamping groove are arranged in one-to-one correspondence, the mounting groove group comprises a plurality of mounting grooves, the plurality of mounting grooves are distributed at intervals along the length extension direction of the base, and the mounting grooves are used for mounting the optical fiber array. The clamping grooves are used for installing optical fiber connectors. A plurality of different optical fiber arrays can be conveniently mounted in the mounting groove group through the arranged mounting groove group; the optical fiber connector can be conveniently embedded in the clamping groove to prevent shaking; an adjusting window is arranged on the base to be matched with the mounting groove group and the clamping groove to adjust the optical fiber array and the optical fiber connector simultaneously.

The invention discloses a manufacturing method of an optical fiber assembly, and the method comprises the steps: obtaining a plurality of first supporting columns used for supporting optical fibers, enabling the center of each first supporting column to be provided with a center hole penetrating through the two ends of the first supporting column, and enabling one optical fiber to be inserted into each center hole; the multiple first supporting columns are combined according to a preset arrangement pattern; the combination of the multiple first supporting columns after arrangement is kept together through a keeping device; and an adhesive is added into gaps among the multiple target supporting columns so that the multiple target supporting columns can adhere to one another. The manufacturing difficulty of the optical fiber assembly can be reduced, and the position precision of the optical fiber is improved. The invention further discloses an optical fiber assembly and optical communication equipment.

The present invention proposes a wide spectrum response radiation-resistant optical fiber image transmission array and its preparation method and application. It includes: drawing a single filament, arranging the single filament in a rod, and drawing two multifilaments to obtain a secondary multifilament; the spectral transmittance of the core rod at 330-2000nm under a thickness of 100mm is ≥65%, and the spectral transmittance of the skin tube is ≥75%; after irradiation with 6.4kGy for 500h, the transmittance attenuation rate of the core rod and the skin tube at 350nm is ≤3%; arranging the secondary multifilament in a glass tube, heating under vacuum, and passing oxygen into the glass tube to clean the secondary multifilament; sealing the glass tube; heating, isostatic pressing to obtain a blank plate; fine processing the blank plate to obtain a wide spectrum response radiation-resistant optical fiber image transmission array. The technical problem solved is how to prepare an optical fiber image transmission array with a wide spectrum response and radiation resistance, and excellent fixed pattern noise performance, no obvious multifilament boundary under a 10x microscope, and can meet the requirements of long-distance detection and long service life in radiation irradiation environments such as the aerospace field.

The invention relates to a high-definition optical fiber image transmission array material and a preparation method thereof. The preparation method comprises the following steps: drawing monofilaments, sleeve absorption filaments and filling filaments; drawing a primary multifilament; drawing a secondary multifilament; arranging plates and carrying out hot melt pressing molding; the prepared high-definition optical fiber image transmitting array material blank plate section is processed into an optical fiber image transmitting array material blank plate blank through rounding, cutting and end face grinding and polishing operation, the optical fiber image transmitting array material blank plate blank is subjected to size finish machining to form an optical fiber panel, and the optical fiber panel is heated and twisted to form an optical fiber image inverter or heated and stretched to form a light cone; and the high-definition optical fiber image transmitting array material is processed. The high-definition optical fiber image transmission array material can effectively improve the resolution and the contrast ratio.

Systems and methods include an optical switch system which provides a combination of μLED arrays, PDs, imaging fiber cables, and crosspoint switch on a single chip. The system includes one or more input ports with each input port configured to connect to an input fiber bundle. The system additionally includes one or more output ports with each output port configured to connect to an output fiber cable, wherein each of the input fiber bundle and the output fiber cable include a plurality of fiber cores. An electrical crosspoint switch is connected to the one or more input ports and the one or more output ports, wherein the electrical crosspoint switch is configured to connect a given input port to a corresponding output port, including all signals in the input fiber cable to the corresponding output fiber cable.

The invention relates to a waveguide (1) for transmitting electromagnetic waves, in particular for transmitting image information from a proximal end (2) of the waveguide to a distal end (4) of the waveguide, along a transport direction (5) extending between the proximal and distal ends, and over a cross-section extending transversely to the transport direction, wherein light may be transmitted through the waveguide (1) by Anderson localization, and wherein the waveguide (1) has an improved properties compared to conventional fiber optic bundles.

The invention provides an optical fiber image transmitting element for high-resolution X-ray detection and a preparation method and application thereof, and the preparation method of the optical fiber image transmitting element for high-resolution X-ray detection comprises the steps: carrying out the acid pickling of the cross section of one end of the optical fiber image transmitting element, enabling the cross section to form a microporous structure with the depth of 100-500 [mu] m, obtaining a pickled optical fiber image transmitting element; wherein a fiber core of the optical fiber image transmission element is made of an easily acid-etching material, and a cladding is made of an acid-etching-resistant material; filling perovskite quantum dot glass powder into the microporous structure to obtain a filled optical fiber image transmitting element; and arranging a protective layer on the filling surface of the filling optical fiber image transmitting element to obtain the high-resolution optical fiber image transmitting element for X-ray detection. The prepared high-resolution optical fiber image transmitting element for X-ray detection has the advantages of high brightness and high resolution, the detection efficiency and detection resolution of an X-ray detector are effectively improved, and the high-resolution optical fiber image transmitting element has important significance in the fields of national defense, civil use and scientific research.

The invention discloses a preparation method of an optical fiber image transmitting element, which comprises the following steps: acquiring single optical fibers, arranging a plurality of single optical fibers into a parallelogram, and filling gaps of the parallelogram with absorption wires and filling wires; drawing the parallelogram into a parallelogram primary composite optical fiber with a first preset side length and a second preset side length; the first preset side length is greater than or smaller than the second preset side length; arranging a plurality of parallelogram primary composite optical fiber filaments into a regular hexagon, and drawing the regular hexagon into a regular hexagon secondary composite optical fiber filament with a third preset side length; and arranging a plurality of orthohexagonal secondary composite optical fibers into an orthohexagonal screen section with a fourth preset side length, and performing melt pressing on the orthohexagonal screen section to obtain an optical fiber panel screen section with a preset diameter. The embodiment of the invention can reduce the optical fiber quality problem caused by the optical fiber screen section structure, and can be widely applied to the technical field of optical fiber preparation.

To provide an optical fiber which can prevent an increase in size of the optical fiber which can transmit an image or light, which can expand a visual field or an irradiation range, and which can maintain an insertion property into a curved part of a lumen.SOLUTION: An optical fiber 100 of the present invention includes a body 110 and a tip end part 120. The tip end part 120 is curved in advance with respect to the body 110. For example, the curve angle K1 is set such that a region along an axial core Ax1 of the body 110 is included in a light receiving or irradiation range Vr with an axial core Ax2 of the tip end part 120 as a center thereof.SELECTED DRAWING: Figure 1

The utility model discloses a light-emitting decorative cloth and a light-emitting decorative device, the light-emitting decorative cloth comprises a basic fabric and a light-emitting unit, the light-emitting unit comprises at least one optical fiber, the optical fiber comprises a weaving section woven in the basic fabric, the weaving section comprises a stacking part and a smooth part, and the stacking part and the smooth part are arranged in the basic fabric. And the brightness of the stacking part is greater than that of the smooth part. The decorative cloth can display different patterns through the special structure of the optical fibers, and the visual effect is improved.

The invention discloses a mid-infrared and far-infrared heterogeneous integrated optical fiber combiner and a preparation method thereof, and belongs to the technical field of mid-infrared optical fiber devices.The combiner comprises six sulfur-based chalcogenide optical fibers with the working wave band being 3-5 microns and four Te-based chalcogenide optical fibers with the working wave band being 7-11 microns, the six sulfur-based chalcogenide optical fibers and the four Te-based chalcogenide optical fibers are mixed in a heterogeneous mode, and ten input optical fibers are closely arranged according to a regular triangle; beam combination transmission is formed by optimizing a low-temperature fused biconical taper process, the optical fiber is precisely welded with an output optical fiber with a slightly large core diameter, and finally the optical fiber is packaged. The beam combiner realizes broadband efficient laser transmission, has the characteristics of excellent beam quality, high synthesis efficiency, large total output power, compact structure and strong stability, and can be widely applied to the fields of optical fiber sensing, laser processing, national defense and the like.

Provided are an optical fiber, a ribbon optical fiber, and a method for manufacturing an optical fiber, whereby it is possible to align an optical fiber having directivity with respect to the rotational direction with high precision. An optical fiber is provided with: a fiber which includes at least one core and a cladding covering the core, and which extends in the longitudinal direction; a primary resin layer covering the outer periphery of the fiber; and a secondary resin layer covering the outer periphery of the primary resin layer. The fibers are directional with respect to a rotation direction about the longitudinal direction as an axis. The primary resin layer includes, in the longitudinal direction, a plurality of first regions having a first Young's modulus and a plurality of second regions having a second Young's modulus, the second Young's modulus being higher than the first Young's modulus.

The invention relates to an adjustable optical fiber array unit based on piezoelectric ceramic displacement control, and the unit comprises a coupling clamp which is used for fixing an optical fiber array; the plurality of piezoelectric ceramic actuators are connected with the coupling clamp and are used for controlling six degrees of freedom of the coupling clamp; according to the invention, the plurality of piezoelectric ceramic actuators are used for controlling the movement of the coupling clamp in each degree of freedom, so that the position of the coupling clamp can be accurately controlled. Compared with an existing optical fiber array unit which cannot be finely adjusted, the coupling difficulty is greatly reduced, automatic coupling is facilitated, and therefore working hours and cost are greatly saved; in the long-term application process, if the position of the fixed optical fiber array unit drifts due to stress release and the like, the optical fiber array unit can be recoupled to the maximum power by adjusting the corresponding piezoelectric ceramic actuator, so that the long-term reliability is greatly improved.

The invention relates to a planar sensor (1), comprising: at least one light guide (2) which has, along its longitudinal extension and on the side thereof intended for light entry, discontinuities (9) in order to allow detection or entry of a light signal (8); and a support element (4) which supports the light guide (2) on one side, preferably such the that discontinuities (9) of the light guide (2) are oriented away from the support element (4).

The invention relates to a micro-convex structure optical fiber image transmission array and a preparation method and application thereof. The method comprises the following steps: drawing a core material glass rod and a skin material glass tube into a primary monofilament; drawing the black absorption glass rod into a light absorption glass gap wire; drawing the skin glass rod into a skin glass gap wire; performing hexagonal densest arrangement on the primary monofilaments, sequentially inserting light absorption glass gap filaments and skin glass gap filaments into gaps of the primary monofilaments to obtain a primary composite rod, and drawing the primary composite rod into primary multifilaments; arranging the primary multifilaments in a hexagonal densest manner to form a secondary composite rod, and drawing the secondary composite rod into secondary multifilaments; performing hexagonal densest arrangement on the secondary multifilaments, performing fixed-length cutting, arranging the secondary multifilaments into plate sections, and performing hot melt pressing on the plate sections to form molten fiber rods; post-processing the fused fiber rod into an optical fiber image transmitting array; and carrying out ion beam etching on the optical fiber image transmission array in vacuum. According to the method, the convex structure on the surface of the output end of the optical fiber image transmitting array is prepared by using an ion beam bombardment etching process, and the uniformity of surface etching processing of the convex structure is improved.

An optical fiber includes a fiber, a primary resin layer and a second resin layer. The fiber includes at least one core and a cladding covering the core, and extends in a longitudinal direction. The primary resin layer covers an outer circumference of the fiber. The secondary resin layer covers an outer circumference of the primary resin layer. The fiber has an orientation with respect to a rotation direction about the longitudinal direction. The primary resin layer includes, in the longitudinal direction, a plurality of first regions each having a first Young's modulus and a plurality of second regions each having a second Young's modulus higher than the first Young's modulus.

A coherent fiber optic bundle breakout cable assembly includes a trunk fiber bundle having a plurality of optical fibers in a close-packed 2D array at a trunk connector end face, and multiple breakout bundles emanating from the trunk fiber bundle and each including a group of optical fibers in a close-packed 2D array at a breakout connector end face, with optical fibers being in lateral contact with one another. Bonding material is arranged in interstitial spaces of optical fibers near ends of each breakout bundle. A method for fabricating such an assembly includes holding the plurality of optical fibers within an elastomeric fixture, dicing the plurality of fibers to provide diced ends thereof, selectively applying and curing bonding material in interstitial spaces between optical fibers proximate to the diced ends according to a bundle-forming pattern, separating groups of optical fibers into breakout bundles, and retaining each breakout bundle in a corresponding breakout bundle ferrule aperture of one or more breakout bundle ferrules.