Abstract:
La invención describe un aparato (1) para rastrear la bóveda celeste con el objeto de detectar fuentes de contaminación lumínica, que comprende: un fotómetro (2) adecuado para cuantificar la luz procedente de una región concreta de la bóveda celeste; una báse móvil (3) a la que está fijado el fotómetro (2), adecuada para dirigir dicho fotómetro (2) hacia cualquier región de la bóveda celeste; y un medio de procesamiento conectado al fotómetro (2) y a la base móvil (3), capaz de controlar la orientación de la base móvil (3) y de detectar las fuentes de contaminación lumínica a partir de los datos de luminosidad obtenidos por el fotómetro (2).
Abstract:
An apparatus includes an array containing N sub-diffraction limit light sensors each having an associated light absorption activation threshold for switching from a reset state to an activated state, where the light absorption activation values lie within a range of values. The apparatus further includes a processor connected with a memory including computer program code, where the memory and computer program code are configured to, with the processor, cause the apparatus at least to perform estimating an intensity of light that illuminates the array based on electrical outputs of the array.
Abstract:
A system and method for detecting radiation indicative of fire, such as forest Fire. In one embodiment, a threshold energy level determined based on ambient sensor conditions. A sensor unit may be setup to scan a predetermined area for electromagnetic radiation (805). Any detected electromagnetic radiation may then be band pass filtered to a wavelength range centered about a predetermined frequency associated with the presence of fire (810). The resulting energy level signal may then be further filter to pass only those signals which exhibit a "flicker" frequency (815). If the resulting filtered signal exceeds the threshold signal (820), fire notification signal may then be generated (825).
Abstract:
The inventive sensor (30) device includes a support structure, a sensing element (15) mounted on the support substrate (60) for sensing optical radiation and generating an electrical output signal in response thereto, and an encapsulant (62) encapsulating the sensing element (15) on the support structure. The encapsulant (62) being configured to define a lens portion (61) for focusing incident optical radiation onto an active surface of the sensing element, and an optical radiation collector portion (53) surrounding the lens portion for collecting and redirecting optical radiation that is not incident the lens portion (61) onto the active surface of the sensing element (15). The collector portion (53) may be a parabolic reflector that reflects incident light by total internal reflection. The sensor device (15) may be incorporated into an assembly including a diffuser (32) positioned across an aperture, and/or may be incorporated into a vehicle accessory such as a rearview mirror assembly.
Abstract:
A liquid scintillation counter (10), which is an optical measurement apparatus, is provided with an HPD (24), a charge amplifier (26), a voltage amplifier (28), a comparator (30), a counter (32), a multi-channel analyzer (34), a CPU (36), and a display (38). The HPD (24) has a photo-cathode (24a) and an APD (24b) and outputs a signal that corresponds to the number of incident photons. The comparator (30) outputs a logic pulse signal, which is a comparison result signal, only when the output signal outputted from the HPD (24) and amplified by the charge amplifier (26) and the voltage amplifier (28) exceeds a specified threshold value. The threshold value is larger than the output signal of when one photoelectron is emitted from the photo-cathode (24a) and smaller than the output signal of when two photoelectrons are emitted.
Abstract:
Some embodiments described herein are directed to a photo sensor and a method of operating a photo sensor. In an embodiment, a photo sensor comprises a photo diode, a filter circuit, and an output circuit. The filter circuit has an input node configured to be electrically coupled to an output node of the photo diode, and has an output node. The filter circuit has an adjustable gain, and the adjustable gain is adjustable based on a signal output from the filter circuit. The output circuit has an input node configured to be electrically coupled to the output node of the filter circuit.
Abstract:
본 발명은 광원으로부터 출력되는 가시광선 영역과 적외선 영역을 포함하는 제1 입사광을 수신하여 상기 제1 입사광에 대응하는 제1 전기적 신호를 출력하는 제1 출력부; 상기 제1 입사광 중 선정된 파장 범위의 가시광선 영역과 적외선 영역을 포함하는 제2 입사광을 수신하여 상기 제2 입사광에 대응하는 제2 전기적 신호를 출력하는 제2 출력부; 및 상기 출력된 제1 전기적 신호와 제2 전기적 신호를 참조하여 상기 광원에 대한 조도값을 획득하고, 상기 광원의 종류 및 특성 중 적어도 하나를 분석하는 신호 처리부를 포함하는 조도 검출 장치 및 그 방법을 개시한다.