Abstract:
A frequency selective infrared (IR) photodetector having a predetermined frequency band. The exemplary frequency selective photodetector includes: a dielectric IR absorber having a first surface and a second surface substantially parallel to the first surface; an electrode electrically coupled to the first surface of the dielectric IR absorber; and a frequency selective surface plasmonic (FSSP) structure formed on the second surface of the dielectric IR absorber. The FSSP structure is designed to selectively transmit radiation in the predetermined frequency band that is incident on the FSSP structure substantially independent of the angle of incidence of the incident radiation on the FSSP structure.
Abstract:
A motion detector camera includes a housing, viewing electronics mounted within the housing, an IR emitter exposed on a surface of the housing, a motion detector exposed on a surface of the housing, and a controller operatively coupled to the viewing electronics, the IR emitter, and the motion detector, wherein the controller is adapted to send an activation signal to the IR emitter and to the viewing electronics when the controller receives a triggering signal from the motion detector.
Abstract:
A CMOS detector with pairs of interdigitated elongated finger-like collection gates includes p+ implanted regions that create charge barrier regions that can intentionally be overcome. These regions steer charge to a desired collection gate pair for collection. The p+ implanted regions may be formed before and/or after formation of the collection gates. These regions form charge barrier regions when an associated collection gate is biased low. The barriers are overcome when an associated collection gate is high. These barrier regions steer substantially all charge to collection gates that are biased high, enhancing modulation contrast. Advantageously, the resultant structure has reduced power requirements in that inter-gate capacitance is reduced in that inter-gate spacing can be increased over prior art gate spacing and lower swing voltages may be used. Also higher modulation contrast is achieved in that the charge collection area of the low gate(s) is significantly reduced.
Abstract:
An electronic light detection circuit for detecting an intensity modulated light signal on a photosensitive element under backlight condition. The circuit comprises the photosensitive element, in particular as a light position detector for detecting a striking position of the light signal spot within a detection window, an amplifier with high input resistance connected to an output of the photosensitive element and a backlight suppression circuitry.The backlight suppression circuitry is connected to the output of the photosensitive element in parallel to the amplifier and comprises an electronic active resonator structure. The active resonator, structure is designed in such a way to provide a load impedance to an output of the photosensitive element with a low load impedance for low frequencies for suppression of natural and artificial backlight-saturation of the photosensitive element and a high load impedance at the frequency of the intensity modulated light signal.
Abstract:
The present invention relates to a bolometer (10) comprising a substrate (12), a first membrane (16) formed by removing a first sacrificial layer (14) on the substrate (12), the first membrane (16) comprising a measuring element (18) for measuring an amount of incident electromagnetic radiation (R), a second membrane (22) formed by removing a second sacrificial layer (20) on the first membrane (16), the second membrane (22) enclosing the first membrane (16), a first cavity (24) formed between the substrate (12) and the first membrane (16), and a second cavity (26) formed between the first membrane (16) and the second membrane (22). The present invention further relates to a method of manufacturing a bolometer, as well as a thermographic image sensor and medical device.
Abstract:
A solar tracking system and method that use a shielding tube that admits solar radiation and has an absorptive inner surface for absorbing the solar radiation that is incident on it. The system has a photodetector for generating a signal related to an intensity of solar radiation at a distal end of the shielding tube and a scan unit for periodically executing a certain scan pattern in an elevation angle El and in an azimuth angle Az of the shielding tube. A processing unit in communication with the photodetector determines an on-sun orientation of the shielding tube based on a convolution of the signal obtained while executing the scan pattern with a trained convolution kernel. The on-sun orientation thus found can be used to update the orientation of one or more solar surfaces, e.g., reflective or photovoltaic surfaces.
Abstract:
A motion sensing device, for a motion sensing system having a light emitting device for generating light of a first frequency range, includes a motion sensing area comprising a sensor array, for sensing light of the first frequency range to generate two-dimensional motion information of a first axis and a second axis; and a distance sensing area, configured at an outside of the motion sensing area, for sensing light of the first frequency range to generate distance information of a third axis.
Abstract:
A motion sensor includes: a substrate, which includes a plurality of lead frame layers and a plurality of ceramic layers; a light source, disposed on the substrate, for emitting light; a sensing device, disposed on the substrate, for receiving the light to perform motion sensing; a cover, for fixing and protecting the light source and the sensing device; and an adhesive, for gluing the cover to the substrate, the adhesive including a component capable of blocking the light; wherein the light is infrared light, visible light or ultraviolet light.
Abstract:
According to one aspect of the invention, there is provided a photo-sensor comprising: an optically transparent substrate; an electrode pair; and a photoactive film with electrical polarization located between the optically transparent substrate and the electrode pair, wherein the optically transparent substrate is configured to transmit incident radiation received by the optically transparent substrate to the photoactive film and wherein the electrode pair is configured to receive charge carriers generated by the photoactive film in response to the transmitted incident radiation.
Abstract:
Described is an arrangement for registering light, comprising: a MOS-transistor structure (101, 201, 401, 501, 601, 701) having a first source/drain region (103), a second source/drain region (105), and a bulk region (107) at least partially between the first source/drain region and the second source/drain region, wherein the bulk region has a doping type different from another doping type of the first and the second source/drain regions, wherein in the bulk region (107) charge carriers are generated in dependence of light (111) impinging on the bulk region (107), wherein the generated charge carriers control a current flowing from the first source/drain region (103) to the second source/drain region (105) via at least a portion of the bulk region.