Abstract:
The present invention provides a method for embedding particles in a solid structure including the steps of extruding a slurry of particles and a polymeric solution into a linear polymer medium having particles embedded into a polymer portion; and curing the polymer portion of the linear polymer medium.
Abstract:
A measuring device for immunochromatography test piece comprising an irradiation optical system for irradiating measurement light onto an immunochromatography test piece, and a detection optical system for detecting reflected light from the immunochromatography test piece under irradiation with the measurement light. The irradiation optical system comprises a semiconductor light emitting element, a beam shaping member, a lens, a first baffle portion, a second baffle portion, and a third baffle portion. The beam shaping member shapes light from the semiconductor light emitting element, into a beam of a beam section extending in a direction substantially parallel to a colored line formed on the immunochromatography test piece. The lens focuses the beam from the beam shaping member on the immunochromatography test piece. The first baffle portion removes stray light, which is disposed between the semiconductor light emitting element and the beam shaping member. The second baffle portion removes stray light, which is disposed between the beam shaping member and the lens. The third baffle portion removes stray light, which is disposed between the lens and the immunochromatography test piece.
Abstract:
A system for optical imaging of a thick specimen that permits rapid acquisition of data necessary for tomographic reconstruction of the three-dimensional (3D) image. One method involves the scanning of the focal plane of an imaging system and integrating the range of focal planes onto a detector. The focal plane of an optical imaging system is scanned along the axis perpendicular to said plane through the thickness of a specimen during a single detector exposure. Secondly, methods for reducing light scatter when using illumination point sources are presented. Both approaches yield shadowgrams. This process is repeated from multiple perspectives, either in series using a single illumination/detection subsystem, or in parallel using several illumination/detection subsystems. A set of pseudo-projections is generated, which are input to a three dimensional tomographic image reconstruction algorithm.
Abstract:
A sensing assembly (10) for indicating when moisture or other particles have accumulated on a window (12) having inside (14) and outside (16) surfaces. The assembly includes an emitter (18) disposed on the inside surface (14) of the window (12) to emit infrared energy to the window (12). A detector (20) is disposed on the inside surface (14) to detect infrared energy from the window (12) on an egress axis. A reference detector (22) detects ambient light and emitter output which are parallel to the egress axis. A control circuit (24) receives the detected measurement level and reference level for comparison to actuate the wipers when rain or particles are on the window (12).
Abstract:
A moisture sensing assembly for controlling vehicle accessories such as windshield wipers is mounted on the inner surface of a vehicle window or windshield for detecting moisture on the outer window surface. A plurality of infrared energy emitting diodes and a sensor for receiving reflected infrared energy from the window and any moisture thereon are mounted at predetermined angles and spacing in a support. The support is biased against the window and enclosed in a protective housing detachably mounted to a window mounted plate preferably adjacent a rearview mirror on the front windshield. The support preferably includes an infrared energy monitoring sensor adjacent the emitting diodes which may be combined with or separate from an ambient infrared energy sensor. The monitoring and ambient sensors provide reference energy levels allowing compensation for varying diode output due to temperature and age and varying external vehicle light conditions.
Abstract:
The invention relates to a matrix device for the detection of light radiation with individual cold screens integrated into a substrate and to its production process. This device comprises detectors arranged in matrix-like manner and defined in a detection material, a substrate which is transparent to the radiation to be detected and on which is epitaxied the detection material and provided in its upper part with blind holes distributed in matrix-like manner, each hole being positioned facing a detector, a layer of anti-reflecting transparent material covering the bottom of the holes and a layer of a material absorbing the radiation covering the upper face of the substrate and the walls of the holes.The invention more particularly applies to an infrared imaging system.
Abstract:
A non-destructive testing instrument useful for measuring of organic constituents of materials utilizes interactance of near infrared radiation from near infrared emitting diodes positioned at one end of a light transmitting cylinder having a length sufficient so that diode point sources provide uniform radiation at the other end of the cylinder, the cylinder being shielded from light. A detector, which may be inside the cylinder, detects the interactance from such radiation to provide a measurement of body fat utilizing a unique formula and unique measuring technique to prevent noise and incorrect measurements.
Abstract:
A gas measuring device has a source capable of emitting a beam of radiation aligned to impinge a detector. A housing means encloses the beam. The housing means has a plurality of apertures permitting the gas to enter the housing means, to intercept the beam, and to exit from the housing means. The device further comprises means to control the amount of thermal radiation reaching the detector.
Abstract:
Method of detecting pinhole defects in sheet materials for example tin plate, galvanized steel and thin metallic foils. A modulated ultra-violet light source is directed at right angles onto the advancing sheet material, the edges of the sheet material are shielded from both ambient and ultra-violet light, all non-ultra-violet light is shielded out from beneath the advancing strip, ultra-violet light which has been transmitted through the pinhole defects and said filtering is photomultiplied as a function of pinhole defects in the advancing material. The method is distinguished from prior art in collimating the ultraviolet light source so as to transmit the light at a right angle to the direction of motion of the sheet material and independently baffling the photomultiplier units with respect to each other, so as to define precise lineal zones of detection in said advancing material.
Abstract:
In order to detect can weld side-seam flaws or defects an infrared sensitive detector head is used. A collimator fiber optics or an optical mask are used to give a higher resolution. Optical fibers may have a second coating of EMA or an occasional optically absorbent fiber may be placed parallel to the optic fibers in order to cut down crosstalk and introduce an absorbent medium between the fibers. Coherent fiber optics may be used.