Abstract: A method for performing DBO measurements utilizing apertures having a single pole includes using a first aperture plate to measure X-axis diffraction of a composite grating. In some embodiments, the first aperture plate has a first pair of radiation-transmitting regions disposed along a first diametrical axis and on opposite sides of an optical axis that is aligned with a center of the first aperture plate. Thereafter, in some embodiments, a second aperture plate, which is complementary to the first aperture plate, is used to measure Y-axis diffraction of the composite grating. By way of example, the second aperture plate has a second pair of radiation-transmitting regions disposed along a second diametrical axis and on opposite sides of the optical axis. In some cases, the second diametrical axis is substantially perpendicular to the first diametrical axis.

Abstract: An optical device includes a first lens holder holding a collimating lens, a second connector block supporting the first lens holder, a second lens holder supporting a light-forming lens, a pillar-shaped roller interposed between the second connector block and the second lens holder and disposed along an X-axis direction, and a pair of adjuster screws disposed across an optical axis in a Y-axis direction, the second lens holder and the second connector block being fixed with each other by the adjuster screws. Mutually facing end faces of the second connector block and the second lens holder are provided with respective V-shaped grooves extending along the X-axis direction, the roller being interposed between the V-shaped grooves. Each of the adjuster screws includes a head engaged with the second lens holder in a manner capable of relative movement in the X-axis direction and a shaft screwed into the second connector block.

Abstract: Methods, devices, and systems for acquiring three-dimensional (3D) measurements of object surfaces are provided. In one aspect, an optical scanning system includes: a first digital illuminator configured to illuminate a sequence of first patterns along a first optical path directed upon an object surface, a second digital illuminator configured to illuminate at least one sequence of second patterns along a second optical path onto the object surface, and at least one digital camera disposed facing the object surface and configured to capture both images of the sequence of first patterns reflected from the object surface and images of the at least one sequence of second patterns reflected from the object surface to generate 3D reconstruction data of the object surface. The second optical path is different from the first optical path, and the at least one sequence of second patterns is different from the sequence of first patterns.

Abstract: A mobile robotic device includes a mobile base and a mast fixed relative to the mobile base. The mast includes a carved-out portion. The mobile robotic device further includes a three-dimensional (3D) lidar sensor mounted in the carved-out portion of the mast and fixed relative to the mast such that a vertical field of view of the 3D lidar sensor is angled downward toward an are in front of the mobile robotic device.

Abstract: A system and method for measuring three-dimensional (3D) coordinate values of an environment is provided. The system includes a movable base unit a first scanner and a second scanner. One or more processors performing a method that includes causing the first scanner to determine first plurality of coordinate values in a first frame of reference based on an emitted first beam of light and a received first reflected light. The second scanner determines a second plurality of 3D coordinate values in a second frame of reference as the base unit is moved from a first position to a second position. The determining of the first coordinate values and the second plurality of 3D coordinate values being performed simultaneously. The second plurality of 3D coordinate values are registered in a common frame of reference based on the first plurality of coordinate values.

Abstract: Apparatus (1) for checking the dimensions and/or shape of a complex-shaped body (3), comprising a checking support (5) on which the body to be checked is positioned, a robotic system (8) with an optical assembly (17) and a memory unit (19) for storing reference data relating to a reference shape of the body. A processing and control unit (18) controls movements of the optical assembly so as to obtain dimensional values relating to the body at predetermined measuring points, these dimensional values then being compared with the reference data stored in the memory unit. The apparatus further comprises reference elements (35) defined in the checking support in predetermined positions and a distance sensor (17) for acquiring actual positions of said reference elements. Local compensation parameters for correcting positioning errors of the robotic system are calculated for each of the reference elements on the basis of the predetermined positions and the actual positions acquired.

Abstract: A system includes: a light source; first and second gratings; and at least one reflective component that in a first position forms a first light path originating at the light source and extending to the first grating and thereafter to a subsequent component in the system, and that in a second position forms a second light path originating at the light source and extending to the second grating and thereafter to the subsequent component.

Abstract: An apparatus includes a flow cell body, a plurality of electrodes, an imaging assembly, and one or more barrier features. The flow cell body defines one or more flow channels and a plurality of wells defined as recesses in the floor of each flow channel. Each well is fluidically coupled with the corresponding flow channel. The flow cell body further defines interstitial surfaces between adjacent wells. Each well defines a corresponding depth. Each electrode is positioned in a corresponding well of the plurality of wells. The electrodes are to effect writing of polynucleotides in the wells. The imaging assembly is to capture images of polynucleotides written in the wells. The one or more barrier features are positioned in the wells, between the wells, or above the wells. The one or more barrier features contain reactions in each well, reduce diffusion between the wells, or reduce optical cross-talk between the wells.

Abstract: A method includes receiving collimated light from an optical imaging system and dividing the received light into multiple bands of wavelength. Each band is refocused onto a corresponding diffraction grating having an amplitude function matched to a point spread function (PSF) of the optical imaging system. The light that is not filtered out by the diffraction grating is transmitted onto a corresponding pixel array. An image is reconstructed from data provided by the pixel arrays for each band. The intensity of light scattered by each diffraction grating may be detected, with the image being reconstructed as a function of an average value of detected intensity of scattered light used to scale the known zero-order mode profile, which is added to the image on the pixel array.

Abstract: Provided is a measuring apparatus, comprising a measuring unit that irradiates a film with light and measures the light transmitted through the film or the light reflected by the film, a moving mechanism that allows the measuring unit to move in a first direction intersecting the direction in which the film is conveyed, the measuring unit includes a light projecting unit that irradiates the film with light, an integrating sphere that collects light from the film, and a light receiving portion that receives the light collected by the integrating sphere.

Abstract: A three-dimensional measuring device comprising an arm having a free end provided with an interface body that includes a front face that has projecting therefrom a tubular coupling part for coupling to a first measuring member for measuring by contact and that is arranged to form a fastener plate for fastening either to a first grip member or else to a second measuring member, and the interface body also includes a side surface arranged to form a second fastener plate for fastening to a second grip member.

Abstract: A smoke detector for an aspirating smoke detection system includes a housing that defines a detection chamber, wherein the housing includes a metallic layer optically exposed to the detection chamber; a laser arranged to direct a beam of light through the detection chamber; a photodiode arranged to detect light scattered from the beam of light; and a heater positioned proximate the metallic layer and outside of the detection chamber, wherein the metallic layer is configured to conduct heat from the heater.

Abstract: A rotary position sensor is includes a static portion that comprises a first board and a second board and a rotatable portion that comprises a third board. The second board comprises a first planar coil; and the third board comprises a second planar coil as well as means for generating luminance. The first board comprises means for receiving the generated luminance and the first planar coil of the second board is configured to transmit power to said second planar coil of said third board via inductance. The power received by said second planar coil is configured to supply a current to said means for generating luminance; and said means for generating luminance is configured to emit a luminance signal which has a luminance level.

Abstract: A system is provided for detecting an abnormal gait condition of a railway vehicle, including a first control chain and a second control chain connected to a digital output adapted to supply or not supply power to a load. The first control chain comprises a first sensor for detecting first detection data of movement of the railway vehicle, and a first control unit for receiving the first detection data, executing a first program for checking an abnormal gait and for controlling first electronic control means for supplying or not supplying power to the load. The second control chain comprises a second sensor for detecting second detection data of movement of the railway vehicle, and a second control unit for receiving the second detection data, executing a second program for checking an abnormal gait, and for controlling second electronic control means for supplying or not supplying power to the load.

Abstract: A photoacoustic remote sensing system (NI-PARS) for imaging a subsurface structure in a sample, has an excitation beam configured to generate ultrasonic signals in the sample at an excitation location; an interrogation beam incident on the sample at the excitation location, a portion of the interrogation beam returning from the sample that is indicative of the generated ultrasonic signals; an optical system that focuses at least one of the excitation beam and the interrogation beam with a focal point that is below the surface of the sample; and a detector that detects the returning portion of the interrogation beam.

Abstract: Apparatus inspects the presence/absence of foreign substance on object having inspection region and non-inspection region arranged outside the inspection region. The apparatus includes sensor for illuminating the object and output, as image, result acquired by detecting light from region including the inspection region, and processor for detecting foreign substance based on inspection region image acquired by excluding non-inspection region image, which is image of the non-inspection region, from the image output from the sensor. The non-inspection region image includes first part generated by light from predetermined part of the non-inspection region of the inspected object and second part whose pixel value is continuous from pixel value of the first part and the processor specifies the second part based on fact that the pixel value of the second part is continuous from that of the first part.

Abstract: Systems and methods are provided for a UV-VIS spectrophotometer, such as a UV-VIS detector unit included in a high-performance liquid chromatography system. In one example, a system for the UV-VIS detector unit may include a first light source, a signal detector, a flow path positioned intermediate the first light source and the signal detector, a second light source, and a reference detector. The first light source, the signal detector, and the flow path may be aligned along a first axis, and the second light source and the reference detector may be aligned along a second axis, different than the first axis.

Abstract: A method of analyzing layer thickness of a multilayer component is provided. The method includes: creating an opening having a predefined geometry partially into the multilayer component at a selected location on a surface of the multilayer component. The multilayer component includes a plurality of material layers including a substrate and a bond coat. The opening exposes each of the plurality of material layers including the substrate. Contrast of the exposed plurality of material layers can be increased. An image is created of the exposed layers in the opening using a digital microscope, and thickness of a bond coat, thickness of a depletion layer\ and/or thickness of an oxide layer is calculated from the image and based on the predefined geometry of the opening. Repairing the opening, allows the multilayer component to be used for an intended purpose after testing, e.g., re-installed and reused in a gas turbine.

Abstract: Disclosed herein is a super resolution imaging method and system for obtaining an image in a crystal material and/or device.

Abstract: Some embodiments of the disclosure provide a flatness detection device. In an embodiment, the flatness detection device includes a back plate, an electromagnet, a cross beam, a probe, and a limiting frame. The limiting frame and the electromagnet are provided side by side on the back plate. The cross beam is located above the limiting frame and the electromagnet. The probe vertically penetrates the cross beam and the limiting frame. A spring is provided between the cross beam and the electromagnet. The spring is movable in a vertical direction by a guide, the movement being at least one of compression and extension.