Abstract: A process of assigning a colour grade to a diamond, including the steps of (i) determining the N3 and C-center content of a diamond (110); (ii) comparing the N3 and C-center content of the diamond with a previously acquired data set from a plurality of diamonds each having a colour grading previously assigned thereto, and (iii) assigning a colour grade to the diamond upon a correlation of the N3 and C-center content of said diamond with a grade of said previously acquired data set; wherein said previously acquired data set comprises a correlation between N3 and C center content and optical absorbance in the visible light spectrum for each diamond of said plurality of diamonds.

Abstract: A system for locating a strand including fibers of a first woven preform material, the preform including, at the surface, strands of fibers of a second material and the strand including fibers of the first material forming a tracer. The system further includes a camera; a light source emitting a non-polarized incident beam configured to be directed towards the preform; a polarizer configured to polarize the non-polarized incident beam before interacting with the preform in order to obtain a polarized incident beam; and a crossed analyzer; the first material being chosen from among glass, aramid and aluminum oxide; the second material being chosen from among carbon and silicon carbide; the camera being configured to film a reflected beam originating from the interaction of the polarized incident beam with the preform, the reflected beam having previously crossed the crossed analyzer, so as to locate the tracer of the preform.

Abstract: The present disclosure relates to an automatic transportation system that moves along a rail and is powered by induction feeding, and more particularly, to a terminal block configured to facilitate installation and extension of a cable for a configuration of an induction power track and to prevent a fire accident due to overheating in advance by an overheat detection unit provided therein and an automatic transportation system using the same.

Abstract: An image-sensing device is disclosed, the image-sensing device comprising a multispectral sensor and a processor communicably coupled to the multispectral sensor. The processor is configured to determine an ambient light source classification based on a comparison of predefined spectral data to data corresponding to an output of the multispectral sensor. Also disclosed is a method of classifying an ambient light source by sensing a spectrum of light with a multispectral sensor; and determining an ambient light source classification based on a comparison of predefined spectral data to data corresponding to an output of the multispectral sensor. An associated computer program, computer-readable medium and data processing apparatus are also disclosed.

Abstract: A light railway system comprising two parallel rails (12) each having a base portion (14) with a flat bottom, an upward-extending web (15), and a railhead (16), and resting within a respective trough structure (20). The trough structure (20) comprising multiple trough units (22) arranged end to end, with blocks (24, 26) that fit between the web (15) of the rail (12) and side portions of the trough unit (22) so as to locate the rail (12) within the trough structure (20). The system also includes multiple spaced-apart rigid ties (28) that interconnect the trough structures (20), so the rails (12) are at a desired separation. Inserted junction plates (54) may be used to hold successive trough units (22) in alignment.

Abstract: A track running toy has a rotational device, whose track surface main body has a track surface and an entry and exit portion. An entry and exit guide member has an entry guide portion guiding a running body from the entry and exit portion to the track surface and an exit guide portion guiding the running body from the entry and exit portion to the same portion. An entry and exit control member is provided at the entry and exit portion, has a pop-up guide portion formed to follow a track guide portion and a running surface, and projects while tilting, whereby the running surface connects to the track surface by operating an operating body. A pop-up abutment member is switched from a retracted to a projecting state when operating the operating body and abuts a stopping abutment portion of the entry and exit guide member when projecting.

Abstract: Provided are a fluorescence imaging probe and a handheld imaging prober, relating to the technical field of medical devices. The fluorescence imaging probe includes a dichroic filter and an image detector, the dichroic filter is arranged at an included angle of 45° with a direction of a main optical axis of incident excitation light, the incident excitation light is reflected by the dichroic filter to a target detection position, the reflected incident excitation light excites a fluorescent substance at the target detection position to form fluorescence, a main optical axis of the fluorescence is arranged coaxially with the image detector, the fluorescence is incident to the image detectors through the dichroic filter, and the image detector converts the received fluorescence into an image signal.

Abstract: A bogie includes a bogie frame, a first running wheel and a second running wheel, at least one driving device, a first horizontal wheel, a second horizontal wheel, a first horizontal safety wheel connected to the first horizontal wheel and moving in synchronization with the first horizontal wheel, and a second horizontal safety wheel connected to the second horizontal wheel and moving in synchronization with the second horizontal wheel. The bogie frame has a straddle recess suitable for straddling a rail. The first running wheel and the second running wheel are pivotably mounted onto the bogie frame respectively and are coaxially spaced apart. The at least one driving device is mounted onto the bogie frame and located between the first running wheel and the second running wheel to drive the first running wheel and the second running wheel.

Abstract: This application relates to simulation equipment, and more particularly to an apparatus and method for simulating a line running state of magnetic levitation. The apparatus includes a levitation-guidance mechanism, a moving mechanism and a magnetic guideway fluctuation simulated mechanism. The levitation-guidance mechanism is configured to detect a force on a single Dewar of a maglev train to be simulated. The moving mechanism is configured to move the levitation-guidance mechanism. The magnetic guideway fluctuation simulated mechanism is arranged below the levitation-guidance mechanism, and is configured to apply a variable force to the levitation-guidance mechanism. The variable force is configured to simulate a constantly-variable electromagnetic force applied to the levitation-guidance mechanism by a real track.

Abstract: A sensor and a locking device therefore are disclosed. The locking device may comprise: a bracket including a first part and a second part bent and extending from the first part; a body coupled to the sensor part to be movable in the longitudinal direction of the second part of the bracket; and a cover pivotally connected to the body, wherein: the cover includes a center plate and a plurality of bridges which extend from the center plate to have a long shape in one direction and include a first bridge extending in the one direction and a second bridge extending in the one direction and spaced apart from the first bridge; the body is positioned between the plurality of bridges; and the plurality of bridges are pivotally connected to the body.

Abstract: Optical measurement of a sample that includes a structure-of-interest (SOI) optically coupled to an unknown structure is optically measured by extracting from the resulting spectral signal the spectral variation that is correlated to key parameters associated with the SOI and removing the spectral variation from unknown structure that is irrelevant to the key parameters. An offline process is used to generate a physics-based model from a number of calibration measurements using reconstructed spectral signals after removing the spectral variation from the spectral signals that is irrelevant to the key parameters. A machine learning model may be additionally generated using at least the spectral variations correlated to key parameters associated with the SOI. In an in-line process, a sample is measured by filtering the spectral signals from a sample to remove spectral effects from the unknown structure and using the physics-based model or using the trained machine learning model.

Abstract: The present invention relates to an early warning protection system based on Beidou position automatic sensing, the system is in communication connection with a TDCS/CTC system, and the early warning protection system includes a locomotive train-mounted terminal subsystem, a ground early warning protection platform subsystem, and a handheld terminal subsystem, the ground early warning protection platform subsystem is in communication connection to the TDCS/CTC system, the locomotive train-mounted terminal subsystem, and the handheld terminal subsystem respectively; and the ground early warning protection platform subsystem performs judgment processing on train-to-train and train-to-person early warning logics according to Beidou positioning, a train speed, and train direction information provided by the locomotive train-mounted terminal subsystem and Beidou positioning information of the handheld terminal subsystem and with reference to station information and train number information sent by the TDCS/CTC sys

Abstract: A multimodality system includes first and second modalities, an optical probe, a detector, and a sheath with a known fluorescence phantom, wherein the phantom would be used for calibration of the catheter providing accurate NIRAF values to the user using the sheath phantom to calibrate an optical probe's measured NIRAF signal to the known fluorescence of the phantom.

Abstract: An electro-optical modulating device and method that provides efficient control of the nonlinear propagation constant in an optical waveguide are featured. The electro-optical modulating device provides large wavelength tunability of the generated entangled photon pairs in real-time by using an applied external bias voltage. The electro-optical modulating device uses gate-tunable material at locations near the optical waveguide. The application of an external bias voltage creates a variable field-effect which in turn varies the optical dielectric properties of the waveguide. The result is a compact active, highly efficient wavelength-tunable integrated quantum photonic device for tunable entangled photon pair generation using an external bias voltage.

Abstract: The present disclosure provides an optical palpation device for evaluating a mechanical property of a sample material. The device comprises a body having a sensing portion and a sensing layer positioned at the sensing portion of the body and having a sensing surface positioned for direct or indirect contact with a surface area of the sample material. The sensing layer is deformable and has a predetermined deformation-dependent optical property. The device further comprises a light detector positioned to detect light transmitted through at least a portion of the sensing layer.

Abstract: Optical spectrometers may be used to determine the spectral components of electromagnetic waves. Spectrometers may be large, bulky devices and may require waves to enter at a nearly direct angle of incidence in order to record a measurement. What is disclosed is an ultra-compact spectrometer with nanophotonic components as light dispersion technology. Nanophotonic components may contain metasurfaces and Bragg filters. Each metasurface may contain light scattering nanostructures that may be randomized to create a large input angle, and the Bragg filter may result in the light dispersion independent of the input angle. The spectrometer may be capable of handling about 200 nm bandwidth. The ultra-compact spectrometer may be able to read image data in the visible (400-600 nm) and to read spectral data in the near-infrared (700-900 nm) wavelength range. The surface area of the spectrometer may be about 1 mm2, allowing it to fit on mobile devices.

Abstract: A fixed signage (10) and method for use of the same are disclosed. In one embodiment, a housing (22) having a window (24) is sized to house a sign (26) therein. A closure assembly (32), under the power of an actuator (112), is installed in the housing (22) to support a cover material (34). The cover material (34) is moveable by a moveable closure member (138) between a fully retracted position whereat the cover material (34) is contained within the housing (22) such that the window (24) is exposed to a fully extended position whereat the cover material (34) covers at least a portion of the window (24). A command signal (180) may be received via a transceiver (160) to remotely control the actuator (112) and cover material (34). A signal sensor (60) within the housing (22) indicates the location of the cover material (34).

Abstract: A mid of train (MOT) mobile unit for use with a train is provided. The MOT mobile unit comprises a first hose for mounting the MOT mobile unit between first and second railway cars of the train located near a middle of the train and a radio for communications with an end of train (EOT) unit disposed on one end of the train and for communications with a head of train (HOT) unit disposed on other end of the train. With the first radio, the MOT mobile unit provides a repeater device functionality for communicating between the EOT unit and the HOT unit. The MOT mobile unit is configured to receive a power from a brake line of the train that runs a length of the train, wherein the power is derived from a compressed air in the brake line by means of an air-powered generator that recharges a battery.

Abstract: A laser device for use with a scientific instrument. The laser device includes a laser emitter and a control system. The laser emitter is configured to generate a laser beam for radiating a sample disposed in a vacuum chamber of the scientific instrument. The control system is configured to receive a pressure signal associated with the vacuum chamber from a pressure sensor, and to change a state of the laser beam in response to the pressure reaching a threshold level.

Abstract: A diffractive optical element (10) for a test interferometer (100) measures a shape of an optical surface (102). Diffractive shape measuring structures (16) are arranged on a used surface (14) of the element and generate a test wave (122) irradiating the surface when the element is arranged in the interferometer. At least one test field (18) several profile properties of test structures contained in the test field. The profile properties characterize a profile line of the test structures extending transversely with respect to the used surface and include a flank angle of the profile line, a profile depth and a depth of a microtrench in a bottom region of a trench-shaped profile of the test structures. The test field is arranged at one location of the used surface instead of the diffractive shape measuring structures such that the test field is surrounded by several diffractive shape measuring structures.