Abstract: A structure for measuring a distance on the basis of the principle of triangulation is simplified. A distance measuring module includes a diffractive optical element, an imaging element, and a distance measuring unit. The diffractive optical element emits a predetermined number of line light beams. The imaging element images the line light beams with which the subject is irradiated. The measuring unit measures a distance from the subject by using triangulation on the basis of the imaged line light beams. Thus, by imaging the line light beams emitted via the diffractive optical element, the distance from the subject is measured with a simple structure.

Abstract: Systems and methods for laser stimulated lock-in thermography (LLT) crack detection are provided. The system includes a spatial light modulator and a controller. The spatial light modulator reflects a laser beam to focus the laser beam onto a sample for detection of a crack, hole or scratch. The controller is coupled to the spatial light modulator and controls operation of the spatial light modulator to switch focus of the laser beam onto the sample between a plurality of LLT focus configurations for detection of the crack, hole or scratch on the sample. The method includes using a first one of the plurality of LLT configurations for coarse scanning of the sample to detect a crack, hole or scratch on the sample and, when a crack, hole or scratch is detected on the sample, switching to a second one of the plurality of LLT configurations for fine scanning of the crack, hole or scratch on the sample to determine one or more parameters of the crack, hole or scratch on the sample.

Abstract: Methods and systems for measuring the asymmetrical image quality or image features of an intraocular lens (IOL), design, refractive and diffractive designs, such as IOLs with Extended tolerance of astigmatic effects are provided by through-focus and meridian response. Measurements are taken at various focal plane and meridian positions to allow for determination of areas of better performance away from 0 meridian or the start position and meridian.

Abstract: Aspects of the present disclosure include methods for determining whether an object is present on a surface of a flow channel of a flow cell. Methods according to certain embodiments include irradiating the flow cell with two or more frequency modulated beams of light from a laser, detecting first and second reflected beams of light reflected by a first surface and a second surface of the flow channel, calculating a frequency of oscillations generated by interference between the first and second reflected beams of light, determining a distance between the first surface and the second surface based on the calculated frequency of interference oscillations and determining whether an object is present on the surface of the flow channel based on the determined distance.

Abstract: An object is to provide a propagation property analyzing apparatus that can alleviate the influence of an error caused by crosstalk, and accurately evaluate a few-mode optical fiber that multiplexes a plurality of modes, in a distributional and non-destructive manner.

Abstract: A nebulizer having a gas capillary and a liquid capillary that are aligned in the same direction within a nebulizer housing is disclosed. The nebulizer includes a nebulizer tip that is substantially parallel to a cross-section of the liquid capillary and to a cross-section of the gas capillary. The tip includes a liquid opening and a gas orifice. The gas capillary may have a non-tapered body and a tapered end. The tip has a roughened surface that allows wetting of the tip with liquid that exits from the liquid opening to form a thin film. The nebulizer may be formed from glass, quartz, one or more polymers, metals, or alloys, or a combination thereof. The nebulizer is capable of handling high solid content samples, and it also offers precision and sensitivity comparable to concentric nebulizers. Methods of introducing a sample into an instrument using the disclosed nebulizer are also disclosed.

Abstract: Depth sensing apparatus includes a radiation source, which is configured to emit a first plurality of beams of light pulses toward a target scene. An array of a second plurality of sensing elements is configured to output signals indicative of respective times of incidence of photons on the sensing element, wherein the second plurality exceeds the first plurality. Light collection optics are configured to image the target scene onto the array of sensing elements. Processing and control circuitry is coupled to receive the signals from the array and is configured to search over the sensing elements in order to identify, responsively to the signals, respective regions of the array on which the light pulses reflected from the target scene are incident, and to process the signals from the identified regions in order determine respective times of arrival of the light pulses.

Abstract: Triangulation photoelectric proximity sensor (1) having a first light emitter (2) for emitting transmitted light into a detection zone (3), a transmitting optical system (4), in particular a lens, being arranged upstream of the light emitter (2), a first light receiver (6) having an array of receiving elements (5) for receiving light from the detection zone (3), which is remitted by an object (7) to be detected, the receiving elements (5) generating respective received signals, a receiving optical system (8) arranged in the beam path between detection zone (3) and first light receiver (6) for generating a light spot from the remitted light on the first light receiver (6), wherein the position of the light spot in the triangulation direction on the first light receiver (6) results in dependence on the distance of the object (7), and a control and evaluation unit (9) for generating a detection signal from the received signals on the basis of the position of the light spot on the first light receiver (6), wherei

Abstract: Super resolution and color motion artifact correction in a pulsed hyperspectral, fluorescence, and laser mapping imaging system. A method includes actuating an emitter to emit pulses of electromagnetic radiation and sensing reflected electromagnetic radiation with a pixel array of an image sensor. The method includes detecting motion across two or more sequential exposure frames, compensating for the detected motion, and combining the two or more sequential exposure frames to generate an image frame. The method is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of: electromagnetic radiation having a wavelength from about 513 nm to about 545 nm, from about 565 nm to about 585 nm, from about 900 nm to about 1000 nm, an excitation wavelength of electromagnetic radiation that causes a reagent to fluoresce, or a laser mapping pattern.

Abstract: A device is proposed for the contactless three-dimensional inspection of a blade (5) for a turbomachine, comprising: means for scanning the teeth, comprising at least one first pair of laser measurement modules (2A, 2B) and means for the rotational driving, about the main axis, of the blade relative to the modules along the main axis of the blade; means for the rebuilding of a three-dimensional virtual representation of the blade using data coming from said scanning means; means of dimensional inspection using the three-dimensional representation; each pair of modules comprising a first module (2A) oriented towards a first face of a tooth and a second module oriented towards a second face of a tooth; the modules being oriented relative to the blade so that during a rotation of the blade about the main axis, the scanning means scan the first and second faces of the blade on the entire rim of said blade, and so that during a translation of the blade along the main axis, said scanning means scan the first an

Abstract: A system for extraction of optical properties of a turbid medium by using diffuse reflectometry may include at least one light source, an optical receiver, at least one separator, and at least one processor configured to control the optical receiver, while the radiation is provided to the turbid medium in the radiation input area of the at least one light source, to sequentially open each LC cell from the array of LC cells, and simultaneously receive radiation, passed through the sequentially opened LC cells and corresponding microlenses, by corresponding photodetectors from the array of photodetectors to obtain the distribution of radiation intensity; and extract the optical properties of the turbid medium based on the distribution of radiation intensity.

Abstract: In cutting a band-shaped glass film along a longitudinal direction thereof and evaluating linearity of an end side formed in association with the cutting to inspect quality of a cut band-shaped glass film, the following steps are performed: an imaging step of dividing the end side into a plurality of segments and imaging each of the plurality of segments; a linear approximation step of calculating an approximate straight line of the end side based on a plurality of points different from each other on the end side in each of a plurality of images obtained in the imaging step; a variation calculation step of calculating a variation value of the plurality of points based on the approximate straight line; and an evaluation step of evaluating the linearity of the end side based on a plurality of variation values respectively corresponding to the plurality of images.

Abstract: An apparatus for localizing a first device includes a time of flight circuit configured to emit a first modulated light signal and receive a reflection of the first modulated light signal from the first device. The apparatus further includes a processing circuit configured to determine, based on the first modulated light signal and the reflection, a position of the first device in a first coordinate system associated with the apparatus. The processing circuit is further configured to determine, based on the position of the first device in the first coordinate system, a position of the apparatus in a second coordinate system and an orientation of the apparatus in the second coordinate system. The apparatus further includes a transmit circuit configured to emit a second modulated signal to the first device, wherein the second modulated signal includes data indicating the position of the first device in the second coordinate system.

Abstract: An optical fiber inclination measurement apparatus and a differential inclination measurement system are provided, which is related to the field of monitoring technology. The apparatus includes a supporting mechanism with a base and a base frame, a swinging mechanism with a pendulum, a cycloid, and a first reflective film is disposed on the pendulum. The measurement mechanism includes a first optical fiber, and an end surface of the first optical fiber is disposed opposite to the first reflective film. During an earthquake generating process, a landform changes and the pendulum swings, resulting in changes in displacement. The end surface of the first optical fiber together with the first reflective film form a Fabry-Perot cavity. The cavity length of the Fabry-Perot cavity changes before and after the landform deforms, and an angle of inclination is equal to a value obtained by dividing the cavity length variation of the Fabry-Perot cavity by the pendulum length.

Abstract: Methods and systems for sequencing a nucleic acid molecule are described that comprise imaging a first surface and an axially-displaced second surface using a compensation-free optical system, the system comprising an objective lens and at least one image sensor, wherein said optical system has a numerical aperture (NA) of less than 0.6 and a field-of-view (FOV) of greater than 1.0 mm2; and) processing the images of the first surface and the axially-displaced second surface to correct for optical aberration such that the images of the first surface and the axially-displaced second surface have substantially the same optical resolution.

Abstract: Disclosed herein are sample dishes for use with microscopes that are simple to mount on a microscope and facilitate easy manipulation of tissue samples disposed thereon during imaging as well as methods of their use. A sample dish comprises an optical interface and, optionally, a support member that holds the optical interface. The optical interface of a sample dish is suitably transparent and planar such that a focal plane of a microscope can reside uniformly at or within a surface of a sample during imaging. In certain embodiments, a support member comprises a dish for holding excess fluid. In certain embodiments, a sample dish comprises separation ribs. In certain embodiments, a sample dish comprises one or more manipulation members (e.g., tabs). In certain embodiments, a sample dish is used with an imaging artifact reducing fluid.

Abstract: A processing apparatus includes an acquisition unit configured to acquire a plurality of pieces of color image data respectively representing a plurality of color images, a determining unit configured to determine a degree of correlation between at least two color values among a plurality of types of color values included in each of a plurality of pixel values corresponding to a pixel position in the plurality of color images, and a determination unit configured to determine, based on the determined degree of correlation, whether a feature related to a direction of light reflected from an object appears in the plurality of pixel values corresponding to the pixel position.

Abstract: A component machining apparatus includes a measurement result acquiring unit and a machining data generator. The measurement result acquiring unit is configured to acquire a measurement result obtained by a measurer configured to measure a three-dimensional shape of a manufactured component among components of a structure. The manufactured component is manufactured earlier than a component of interest. The machining data generator is configured to generate machining data of the component of interest based on the measurement result of the manufactured component that has been acquired by the measurement result acquiring unit.

Abstract: In described examples, a LIDAR system includes a laser transmitter, a receiver, and first and second light directing elements. The laser transmitter is configured to scan a field of view with a laser beam. The receiver is configured to receive light from the field of view, and to focus a first portion of the received light, corresponding to a region of interest, on a first light directing element. The receiver is also configured to focus a second portion of the received light, corresponding to the field of view except for the region of interest, on multiple second light directing elements. The first light directing element is configured to direct the first portion of the received light towards a first photon detector, and the second light directing elements are configured to direct the second portion of the received light towards a second photon detector.

Abstract: An apparatus and method to align ceramic honeycomb bodies. The apparatus includes a light source to direct light toward a first end of a ceramic honeycomb body, a lens to receive at least a portion of the light directed to the first end of the ceramic honeycomb body, an imaging device to capture an image of the received light, wherein the image comprises a portion of a side surface of the honeycomb body. The apparatus comprises a controller configured to receive the captured image, to analyze the captured image based on the portion of the side surface, to adjust the ceramic honeycomb body and/or the lens based on the analysis to align the ceramic honeycomb body and the lens optical axis.