Abstract: A device and method for self-localization of a ceiling-mounted device within an indoor environment includes establishing a floor plan of the environment including a plurality of fixed reference indicia having known locations with respect to an origin point of the environment. A plumb light beam is projecting downward from the device to a floor of the environment to produce a projection on the floor. An imaging of the floor including the projection and at least two reference indicia is captured. A location of the device can then be determined with respect to the origin using the projection and at least two reference indicia.

Abstract: A color measuring device and a color measuring method according to the present invention includes an imaging unit, a first image of a color chart and a second image accompanied with the color chart are obtained by the imaging unit, the second image being a predetermined code indicating control information about the color measuring device, the control information is obtained based on the obtained second image, and operation of the color measuring device is controlled based on the obtained control information.

Abstract: A detection system includes a planar plasmonic element for analyzing an analyte, the plasmonic element having dielectric and metallic regions, the plasmonic element emitting light that carries detected information; and a planar two-dimensional image sensor positioned in non-parallel angled relationship with respect to a plane of the plasmonic element to enhance a spatial image resolution for the light that carries detected information with respect to at least a portion of the light.

Abstract: Disclosed is a method, system, and apparatus for optical emission measurement. The apparatus includes a collection system for collecting a plasma optical emission spectra through an optical window disposed at a wall of a plasma processing chamber. The optical system includes a mirror configured to scan a plurality of non-coincident rays across the plasma processing chamber; and a telecentric coupler for collecting an optical signal from a plasma and directing the optical signal to a spectrometer for measuring the plasma optical emission spectra.

Abstract: According to one aspect of the invention, there is provided an ellipsometry system for measuring any one or more of molecular binding, adsorption and desorption on a substrate, the system comprising: a) a cuvette comprising i) a body within which a cavity is formed and an opening on the body, wherein the cavity extends into the opening through which the substrate is immersed; ii) a window formed on each of two oppositely located walls of the body, wherein the windows are aligned to allow light to enter through one of the two windows to reflect off the portion of the substrate immersed in the cavity and exit through the other of the two windows; iii) a channel arrangement enclosed within the body of the cuvette and comprising two non-contiguous portions, wherein one of the two non-contiguous portions guides fluid into the cavity and the other non-contiguous portion guides fluid out of the cavity; b) a polarized light source disposed to provide the light that enters into one of the two windows on the body of th

Abstract: An apparatus and method for simultaneously measuring, in an immersion microchannel environment, the characteristics of molecular junctions such as a low-molecular-weight biomaterial and the like and the refractive index of a buffer solution by using ellipsometry. Specifically, disclosed is an apparatus for simultaneously measuring, with high sensitivity, the change in refractive index of a buffer solution and the junction dynamic characteristics of a biomaterial by allowing polarized incident light to be received at a biomaterial adsorption layer, which is formed on a substrate such as a semiconductor and the like, so as to meet an anti-reflection condition of a P-wave by using a prism structure and a microchannel; and a measurement method using the same.

Abstract: The phase shift interferometer is configured to measure the shapes of measurement objects by acquiring a plurality of images of interference fringes while shifting the phases of the interference fringes. The interference fringes are provided with a phase difference of 90° relative to each other utilizing polarization of light. Images of the interference fringes are captured by two respective cameras while, in accordance with a conventional phase shift method, mechanically displacing a reference surface or a reference optical path to shift the phases. The phases of the interference fringes are calculated independently from the respective images acquired by the cameras and an average of the two phase calculation results is calculated.

Abstract: The present disclosure is directed to a method of altering chemical properties of an in-process resin used with a 3D printing apparatus. The method includes monitoring the in-process resin using an imaging spectrometer, comparing the in-process resin and a model using one or more spectrums from the imaging spectrometer, and diluting the in-process resin with a diluting resin.

Abstract: An optical coherence analysis system uses a laser swept source that is constrained to operate in a mode locked condition. This is accomplished by synchronously changing the laser cavity's gain and/or phase based on the round trip travel time of light in the cavity. Many high-speed wavelength swept laser sources emit pulses synchronized with the round trip time of the cavity as part of a nonlinear optical frequency red shifting process. Stable pulsation is associated with smooth tuning and low relative intensity noise. Addition of mode-locking methods to this class of lasers can control and stabilize these lasers to a low clock jitter and RIN state, and in specific cases allow long-to-short wavelength tuning in addition to the usual short-to-long (red shifting). The laser may comprise a SOA (410), a tunable Fabry-Perot-Filter (412) as one reflector and an Output coupler (405) in an optical fiber (406) to adjust the cavity length.

Abstract: There is provided a method and a system for identifying or verifying the fiber arrangement and/or the cable type of multi-fiber array cables (such as MPO cables) which employs an OTDR acquisition device at the near end of the MPO cable, a loopback device at the far end and an array of signatures detectable by the OTDR, either at the far or the near end. The loopback device allows performing bidirectional OTDR measurements with a single OTDR acquisition device (without moving it from one end to the other) and the signature array provides fiber arrangement/cable type identification or verification.

Abstract: A LIDAR system includes one or more LIDAR sensor assemblies, which may be mounted to a vehicle or other object. Each LIDAR sensor assembly includes a laser light source to emit laser light, and a light sensor to produce a light signal in response to sensing reflected light corresponding to reflection of the laser light emitted by the laser light source from a reference surface that is fixed in relation to the LIDAR sensor assembly. A controller of the LIDAR sensor assembly may calibrate the LIDAR sensor assembly based at least in part on a signal from the light sensor indicating detection of reflected light corresponding to reflection of a pulse of laser light reflected from the reference surface.

Abstract: The present invention relates to a method for calibrating a projection device, in particular a hand-held projection device, in a navigational environment for medical purposes, comprising the steps of: providing a detection device (1) configured to detect light emitted by the projection device (2); determining the spatial position of the detection device (1); projecting a known projection (3), comprising an area (4) configured to stimulate the detection device (1), towards the detection device (1) by means of the projection device (2); determining the position of the projection device (2), particularly in relation to the detection device (1) when the area (4) stimulates the detection device (1).

Abstract: An autocorrelation measurement device includes a first reflection member, a second reflection member, a focusing unit, a nonlinear optical crystal, a detection unit, a filter, an aperture, a delay adjusting unit, and an analysis unit. Incident pulsed light is transmitted through the second reflection member and incident on the first reflection member. First pulsed light reflected on a first reflection surface of the first reflection member and a second reflection surface of the second reflection member and second pulsed light reflected on a second reflection surface of the first reflection member and a first reflection surface of the second reflection member are incident on the nonlinear optical crystal via the focusing unit. Second harmonic light generated in the nonlinear optical crystal is detected by the detection unit.

Abstract: Embodiments of a shearography system may include light sources configured to produce beams of light to illuminate a test area. Each of the beams of light may include a different wavelength. A camera may be configured to obtain intensity information corresponding to reflections of the lights off of the test area. An optical shearing device may be disposed in an optical path between the light sources and the camera and the optical shearing device may be configured to provide a shearing angle.

Abstract: An extremely sensitive spectroscopy method utilizes a laser modified to an extremely low emission with an integrated control system, interfaced within a typical Raman platform to comprise low energy laser spectroscopy (LELS). LELS acquires and utilizes a quantum entangled state of photons and particles, including omnipresent cosmological dark matter particles (OCDM) and omnipresent cosmological dark energy (OCDE). The OCDM and OCDE matter has an affinity to particles of same OCDM and OCDE matter in target specimens, with same-time data results of high sensitivity. In a semiconductor light emitter, electron flow at a low energy level is provided to a quantum well to produce a quantum tunneling of electrons into an active region of the laser quantum well and creating sublasering. Sublasering allows OCDM and OCDE to become entangled with other particles and energies in the laser's quantum well and create a transmission package comprising quantum entangled fields, waves, wave packages, states and energies.

Abstract: In a high-frequency power supply for plasma having a housing and a high-frequency circuit substrate placed inside the housing elements for supplying a high-frequency current to a high-frequency inductive coil are mounted on the high-frequency circuit substrate, a cooling block for cooling the high-frequency circuit substrate, a fan for sending air to the elements on the high-frequency circuit substrate as wind are further provided, and fins for allowing air to flow through so that the air is cooled are formed on the surface of the cooling block. The housing is provided with an air path for supplying the air that has flown through the fins to the absorbing side of the fan.

Abstract: An imaging apparatus images an imaging object which is stored in a container having an optical transparent wall part tomographically via the wall part. An FD-OCT imaging apparatus sets an optical path length of a reference light in conjunction with a setting of a focal depth such that a position corresponding to the focal depth is between a position conjugate with a first surface and a position conjugate with a second surface in a reflected light intensity distribution representing a relationship between a position in an incident direction of an illumination light and a reflected light intensity. Here, the first surface is a surface on the imaging object side out of surfaces of the wall part. The second surface is another surface on a side opposite to the imaging object out of the surfaces of the wall part.

Abstract: In order to measure the contrast of interference in an interference-based, closed-loop, phase-modulating optical sensor device, the gain of the feedback loop in a feedback controller is evaluated. This gain is found to be a measure for the contrast. The contrast evaluated in this way can e.g. be used for period-disambiguation when determining the measurand of the sensor device. The sensor device can e.g. be a high-voltage sensor or a current sensor.

Abstract: The airplane cabin air quality monitoring system comprises a gas monitor. The gas monitor measures the atmosphere within an aircraft for a plurality of potentially hazardous gases. The gas monitor further comprises a plurality of gas sensors, a plurality of compensation sensors, a spectrometer, and a control system. The plurality of gas sensors, the plurality of compensation sensors, the spectrometer, and the control system are electrically interconnected. The control system manages and regulates the operation of the gas monitor. The control system generates an alert if a potentially hazardous gas is detected. The airplane cabin air quality monitoring system further comprises a docking station stores the gas monitor when the gas monitor is not in use. The docking station: 1) recharges the battery of the gas monitor; and, 2) establishes a hardwired first communication link between the gas monitor and the ACARS of the aircraft.

Abstract: A laser component includes multiple laser devices arranged in an array to include different emission wavelengths, and a driving unit that, while switching each of the laser devices along the array into a turn-ON-enabled state that enables the laser device to turn to an ON state, brings one of the laser devices in the turn-ON-enabled state into an ON state.