Abstract:
An ultraviolet sensor includes a substrate; a diamond layer, placed on the substrate, functioning as a detector; and at least one pair of surface electrodes arranged on the diamond layer. The diamond layer has a detecting region present at the surface thereof, the detecting region has at least one sub-region exposed from the surface electrodes, and the sub-region has a covering layer, made of oxide or fluoride, lying thereon. A method for manufacturing the ultraviolet sensor includes a step of forming a diamond layer, functioning as a detector, on a substrate; a step of forming at least one pair of surface electrodes on the diamond layer; and a step of forming a covering layer, made of oxide or fluoride, on at least one sub-region of a detecting region present at the surface of the diamond layer, the sub-region being exposed from the surface electrodes.
Abstract:
The invention concerns an optical device comprising means for dynamic filtration of a very high luminosity source, characterized in that said filtering means consists of a mirror (1) including a zone (2) of less reflection and means for automatic control of the position of the mirror based on the position of the source of very high luminosity in the image formed on said mirror (1).
Abstract:
A sensor circuit for detecting the occurrence of welding is disclosed. The sensor circuit uses a phototransistor operative to receive a light input and produce an output representative thereof. A resistor is coupled between the phototransistor's base and emitter to control the phototransistor's response to low intensity and high intensity light. The sensor circuit may also be used in an auto-darkening eye protection device, such as a welding helmet or the like, that delivers a drive signal to a shutter assembly upon the detection of welding, the drive signal being operative to drive the shutter assembly to a darkened, protective state.
Abstract:
A UV sensor design which virtually eliminates solarization effects on optical components and photodetector and is effective for both broad area and collimated light sources. The sensor design reduces the number of photons striking a unit area of any of the materials in the light path sensitive to UV light to a level which does not produce appreciable solarization over very long periods of time. The UV sensor has as the first optical element in the viewing path a UV transmitting, extremely low solarization window. The back surface of this window is frosted to produce some diffusion of the UV rays. A small metal disc with a very small aperture is the next optical element and reduces the total amount of energy admitted to the optical measurement system. A second frosted UV transmitting, extremely low solarization window further diffuses the light beam passing through the aperture. The UV light from this second window travels toward to two UV filters and is further dispersed to produce low intensity level UV light which impinges on a silicon photodetector.
Abstract:
A water discharge apparatus including a water discharger, a water supply path, an opening/closing valve, a photoelectric sensor, and a controller, the photoelectric sensor projects detection light, receives a reflected light of the detection light, and outputs a received signal corresponding to a light reception amount of the reflected light, the controller detects an existence or absence of an object based on the received signal and controls opening and closing of the opening/closing valve according to a detection result of the object, the photoelectric sensor includes a sensor main body and a conductive member, the sensor main body includes a light-projecting element and a light receiving element, and the conductive member covers a front of the light receiving element, is formed in a sheet configuration, is light-transmissive, is conductive, and is electrically connected to a reference potential of the sensor main body.
Abstract:
The invention relates to a UV light sensor produced in a CMOS method, comprising a substrate that has a surface, one or more sensor elements that detect radiation and are designed in said substrate, at least one passivation layer arranged over said substrate surface, and a functional layer that is arranged over said passivation layer and designed in the form of at least one filter. The problem addressed by the invention of providing a UV light sensor which is sensitive exclusively within the UV wavelength range is solved, in terms of the arrangement, by means of filters designed directly on a planar passivation layer, and stray light suppressing means around said at least one sensor element and/or around the UV light sensor. In terms of the method, the problem is solved by measuring two output signals from at least two photo diodes fitted with different filters, and by determining a mathematical relationship between the two output signals.
Abstract:
A photoreception device includes: a substrate; a photoreceptor element including a photoreceptor portion upon an upper surface thereof and a lower surface thereof is mounted upon the substrate; and an insulating resin mass that contains a flat upper surface and an opening that exposes the photoreceptor portion of the photoreceptor element, that is formed upon the substrate to be thicker than thickness of the photoreceptor element, and that adheres closely against side surfaces of the photoreceptor element, the side surfaces surrounding the photoreceptor element. The insulating resin mass contains a step portion that is provided to a height between the flat upper surface thereof and the upper surface of the photoreceptor portion; and the step portion extends parallel to at least one pair of mutually opposed side surfaces of the photoreceptor element, at a periphery of the opening.