To provide a confocal displacement sensor capable of reducing a measurement error. Light having a plurality of wavelengths is emitted by a light processing section 120. A chromatic aberration along an optical axis direction is caused by a lens unit 220 in the light emitted by the light projecting section 120. The light having the chromatic aberration converged and irradiated on a measurement object S by the lens unit 220. In the light irradiated on the measurement object S by the lens unit 220, light having a wavelength reflected while focusing on the surface of the measurement object S passes through a plurality of pinholes. Displacement of the measurement object S is calculated by an arithmetic processing section 150 on the basis of signal intensity for each wavelength of an average signal corresponding to an average of intensities for each wavelength concerning a plurality of lights passed through the plurality of pinholes.

A lighting apparatus is composed of optical fibers that are grouped at one end thereof in a bundle so as to optically couple to a common light source. A set of the optical fibers are configured to emit light transversely to the optical axis thereof to form an illumination region in a fiber optic panel. At least one sensor is coupled to at least one of the optical fibers in the bundle and generates an electrical signal in response to a physical phenomenon.

A human body sensing mat can sense the movement of a human body and analyze a user's sleep. The human body sensing mat may include a substrate; a plurality of fiber sensors for generating signals according to a distance to a specific object; a sensor array disposed on the substrate; a shield layer for covering the sensor array; and a driving unit for applying a voltage to the sensor array. Each of the fiber sensors is disposed on a central portion of the substrate and on both ends of the substrate. The fiber sensors that are respectively disposed in the central portion and end portions of the mat can sense the user's breathing, tossing and turning, and the like regardless of the user's posture. Accordingly, the user's sleep can be analyzed regardless of the user's posture.

Apparatus and associated methods relate to a system for interfacing with an optically-powered sensor. The system includes an optical emitter configured to emit a beam of optical energy so as to provide operating power for the optically-powered sensor. The system includes an optical detector configured to detect a time sequence of optical pulses generated by the optically-powered sensor, the time sequence of pulses modulated between first and second optical power levels. The system includes a parameter extractor configured to determine a value of a sensed parameter based on the time sequence of optical pulses detected by the optical detector. The system also includes a power controller configured to control power level of the emitted beam of optical energy based on the first and/or second optical power levels detected by the optical detector.

A fiber optic sensing system includes a plurality of optical probes, a light source, and a light splitting unit connecting the light source to the plurality of optical probes. The light splitting unit splits a light emitted from the light source into a plurality of divided lights, the divided lights being transmitted to the plurality of optical probes.

Provided is a sensor head capable of reduction in size while securing measurement accuracy. A sensor head includes a first case section and a second case section each having a substantially cylindrical shape and an end portion of which is open, and a third case section configured to connect the first case section and the second case section, a diffraction lens is disposed in the first case section, an objective lens is disposed in the second case section, and a mirror member is disposed in the third case section and configured to bend light entering the diffraction lens side toward the objective lens side.

A system comprises a housing, a light source, a light guide configured to guide a light from the light source. The light guide includes a plurality of detection target configured to provide optical effect on the light in accordance with a bend state of the light guide. A light detector is configured to detect the light emitted from the light guide and provide information of the detected light. A communication unit is configured to transmit wirelessly the information of the detected light. The communication unit is disposed in the housing.

The disclosed embodiments provide a method for tamper-proof protection of containers used for shipment of goods. An optical fiber is embedded in an Optical Shield Wallpaper which lines all interior surfaces of any size of a shipping container, package, box, barrel or other shaped container. Wallpaper is manufactured using large scale rollers that press fibers with encapsulated adhesives onto an appropriate medium. Small medicine containers are protected with a fiber optic shield and sensors manufactured using ink jet printing techniques. Light is applied to the optical fiber and a measurement of optical fiber characteristics is performed. Digital signal processing is used to generate pedigree information, which may include items such as shipping location, serial numbers and lot numbers for the goods. The status of the autonomous anti-tampering system is monitored real-time for unauthorized intrusions. Intrusions detected are relayed to an authorized recipient via a variety of communication channels.

A system includes an optical waveguide, provided as a component of a first part, and at least one sensor system, provided as a component of a second part. The second part is movable relative to the first part, and the optical waveguide radiates light laterally on the side. The sensor system detects the light intensity of the laterally emitted light emitted by the optical waveguide. A grating is provided between the sensor system and the optical waveguide.

An apparatus is disclosed for capturing image information. The apparatus includes a waveguide having opposed planar input and output faces. A diffractive optical element (DOE) is formed across the waveguide. The DOE is configured to couple a portion of the light passing through the waveguide into the waveguide. The light coupled into the waveguide is directed via total internal reflection to an exit location on the waveguide. The apparatus further includes a light sensor having an input positioned adjacent the exit location of the waveguide to capture light exiting therefrom and generate output signals corresponding thereto. A processor determines the angle and position of the coupled light with respect to the input face of the waveguide based on the output signals.