Abstract: A laminated glazing and related detection method is described. The laminated glazing has a detecting device to determine the presence of mist on a surface of the glazing and/or the presence of an object contacting or proximal the glazing. The detecting device including transmitter means for emitting a beam of electromagnetic radiation, detector means for detecting electromagnetic radiation and a target for non-specular reflection of first beam of electromagnetic radiation. The transmitter means is configured to emit the beam of electromagnetic radiation to illuminate the target such that electromagnetic radiation reflects therefrom to illuminate a region of a major surface of the glazing. At least a portion of the electromagnetic radiation reflected off the region is detectable by the detector means to provide a detection signal for detecting mist on the region and/or the presence of an object contacting or proximal the glazing. A detection method is also described.

Abstract: The present disclosure relates to an inspection apparatus and an inspection method that enable inspection of the performance of an image pickup element. Generation of collimated light and transmission of part of the collimated light through a transmission filter having a light-blocking face provided with circular holes arranged regularly, causes conversion to rays of columnar collimated light arranged regularly. An image including the rays of columnar collimated light arranged regularly, is captured by an image pickup element being inspected. Then, acquisition of the difference between the image captured by the image pickup element being inspected and an ideal image captured by an ideal image pickup element and comparison between the difference and a threshold, result in inspection of the performance of the image pickup element being inspected.

Abstract: An optical apparatus includes: a light source to emit reference light; a phototransmitter optical system to project the reference light emitted from the light source onto a measurement area extending 90 degrees or more; an image sensor having an imaging surface on which an optical image is formed; and a photoreceiver optical system to form an image of reflected light on the imaging surface, the reflected light being resulting from the reference light reflected at a measurement target present in the measurement area extending 90 degrees or more. The phototransmitter optical system and the photoreceiver optical system are disposed such that at least an optical axis of the phototransmitter optical system and an optical axis of the photoreceiver optical system partially coincide with each other, and at least a portion of the phototransmitter optical system and a portion of the photoreceiver optical system constitute a common optical system unit.

Abstract: A method and a device for aligning two lenses, wherein the method is directed to aligning first and second optical partial systems of an optical system, which are arranged so as to be located opposite to one another. The method includes the steps of: projecting alignment marks into a first image plane of the first optical partial system, projecting the alignment marks from the first image plane onto a sensitive surface of the second optical partial system, and aligning the optical partial systems relative to one another, such that projections of the alignment marks in a depth of field of the sensitive surface are imaged at ideal positions.

Abstract: A strain measurement method includes disposing a 3D camera module at a first measurement position; using the 3D camera module to acquire a first 3D image of a to-be-measured object at a first to-be-measured position; acquiring a second 3D image of the to-be-measured object at the first to-be-measured position; and splicing the first and second 3D images to obtain an initial 3D image. The method still includes: moving the 3D camera module from the first measurement position to a second measurement position; using the 3D camera module to acquire a third 3D image of the to-be-measured object at a second to-be-measured position; acquiring a fourth 3D image of the to-be-measured object at the second to-be-measured position; and splicing the third and fourth 3D images to obtain a deformed 3D image. The method further includes comparing the initial 3D image and the deformed 3D image to output 3D deformation information.

Abstract: An apparatus for three-dimensional shape measurement is provided, including a projection device, an image capture device, and an image processing device. The projection device sequentially projects a plurality of structured light beams on a scene during a first projection period and a second projection period. The mean level of the structured light beams during the first projection period is the same as the mean level of the structured light beams during the second projection period, and the frequency of the structured light beams during the first projection period is different from the frequency of the structured light beams during the second projection period. The image capture device captures an image of the scene within the projection time of each of the structured light beams. The image processing device obtains a three-dimensional shape of a to-be-measured object in the scene according to the images.

Abstract: A lensmeter system may include a mobile device having a camera. The camera may capture a first image of a pattern through a lens that is separate from the camera, while the lens is in contact with a pattern. The mobile device may determine the size of the lens based on the first image and known features of the pattern. The camera may capture a second image of the pattern, while the lens is at an intermediate location between the camera and the pattern. The second image may be transformed to an ideal coordinate system, and processed determine a distortion of the pattern attributable to the lens. The mobile device may measure characteristics of the lens based on the distortion. Characteristics of the lens may include a spherical power, a cylinder power, and/or an astigmatism angle.

Abstract: An object of the present invention is to provide an optical pulse test apparatus that can test an optical fiber cable at once in a short period of time.

Abstract: Aspects of the present disclosure describe amplifier dynamics compensation through feedback control for distributed fiber sensing systems, methods, and structures employing Brillouin optical time-domain reflectometry.

Abstract: A measurement device is configured to measure a three-dimensional shape of an object for measurement. The measurement device includes a projector, an imager, an identifier, and a calculator. The projector is configured to project a plurality of light lines onto the object for measurement. The imager is configured to capture an image of the object for measurement on which the plurality of light lines are projected. The identifier is configured to identify a projection condition of the light lines based on shaping information of the object for measurement. The calculator is configured to calculate a plurality of line shapes from the image captured by the imager, based on the projection condition.

Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.

Abstract: A system for monitoring of the resin front during resin infusion into a fiber preform for the manufacturing of composites. Such monitoring is based on Optical Frequency Domain Reflectometry by emitting light pulses through optic fibers which forms a resin infusion mesh in a fiber preform.

Abstract: Systems and methods for three-dimensional (3D) shape estimation of objects embedded in light-scattering media via polarimetry are provided. The systems and methods utilize polarization to exploit forward scattering in the light-scattering medium to mitigate backscatter interference (BSI).

Abstract: A sample shape measuring method includes a step of preparing illumination light that is to be passed through a predetermined illumination region, a step of irradiating the illumination light to a sample, and a predetermined processing step. The predetermined illumination region is set such that an area of a region of the illumination light passing through a pupil of an observation optical system is smaller than an area of the pupil of the observation optical system. The predetermined processing step includes a step of receiving light emerged from the observation optical system, a step of computing a position of an image of the predetermined illumination region from light received, a step of computing a difference between the position of the image of the predetermined illumination region and a reference position, and a step of calculating an amount of inclination at a surface of the sample, from the difference calculated.

Abstract: A testing device includes a test port, a light source, a measurement element, and a controller. A method of testing an optical system with the testing device includes, and/or the testing device is configured for, measuring an unloaded reference signal when the testing device is not connected to the optical system and storing the unloaded reference signal in a memory of the testing device. The method and/or configuration also includes detecting a signal from the optical system after storing the unloaded reference signal. Based on the detected signal, it is determined that the optical system is connected to a test port of the testing device. A test of the optical system with the testing device is automatically initiated in response to determining that the optical system is connected to the test port of the testing device.

Abstract: The present invention provides a positioning method and a positioning device for a display module. The present invention achieves real-time monitoring for the alignment accuracy of a target display module in the horizontal direction by setting a laser calibration device between the target display module and a support table, and determining if a light source received by a receiver in the laser calibration device is disposed on a same horizontal line. The application of the laser calibration device improves alignment accuracy of the target display module and improves yield and quality of the product.

Abstract: A system and method for detecting degradation of a fiber optic in a strap of a body-worn device that is removably attached to an appendage or other location of a person or animal. A fiber optic is embedded within the strap. A light source emits light energy through the optical interface and into the fiber optic and a light sensor receives and detects light energy from the fiber optic. If the light energy is not received and detected from the fiber optic, the light energy is increased until the light energy is received and detected or reaches a maximum light energy at which time tampering is declared. If the light energy reaches a pre-determined threshold which is less than the maximum light energy, it is declared that the body-worn device requires servicing.

Abstract: There is provided a three-dimensional measurement device which includes an image selection unit that selects plural images in which the marker is detected, from among images captured by the plural cameras placed at different positions in a three-dimensional space where the marker exists, a marker position identification unit that identifies positional information regarding the marker in the three-dimensional space with use of the plural images, and an image reselection unit that reselects some of the plural images, on the basis of relationships between the positional information identified by the marker position identification unit and positional information regarding the plural cameras, and in which the marker position identification unit reidentifies the positional information with use of the reselected images.

Abstract: The present invention relates to a method and device for measuring optical nonlinearity of an optical fiber to be measured comprising a plurality of cores having mutually coupled waveguide modes. The method includes, at least, preparing a laser light source emitting laser light and a detecting unit determining an optical intensity, inputting laser light into a specific core of the optical fiber to be measured, determining the intensity of a specific wavelength component caused by optical nonlinearity among the reflective light components from the optical fiber to be measured, and determining optical nonlinearity of the optical fiber to be measured on the basis of the intensity of the specific wavelength component.

Abstract: A luminating protective hood inspection device includes a luminating device within a designated inspection zone where a garment can be viewed. A transparent dome for the garment “protective hood” can be fit over to simulate a garment function. A rotating system provides a method where the garment can pass in front of the inspection zone. Various controls are provided including an on/off switch and or brightness control, a foot operated control switch, and a lightweight portable compact frame.