摘要:
This invention relates to a method for determining the position of an object in a structure. The object receives modulated light waves from a plurality of light sources, which are arranged in the structure. The modulation is individually coded, and the position of the light sources in the structure is known. The modulation signals are synchronized, and thereby it is possible to determine the position of the object on basis of measuring the phase difference between the phase of each received modulated light wave and a comparison phase. The phase difference is used for distance calculations, which in turn give the position of the object.
摘要:
An electric light and external light control system for a space with a dual-mode light sensor is proposed. The dual-mode light sensor (106) measures and computes the amount of external light and electrical light incident on its sensing surface. The individual measured light components (total light, electric light and external light) are transmitted to the window treatment controller (103) and the electric light controller (102). The controllers (102, 103) use this information to optimally control the lighting condition to meet user requirements and reduce energy consumption. Both controllers (102, 103) operate concurrently and independently, but are linked via the dual-mode sensor (106).
摘要:
The disclosed embodiments relate to a daylight harvesting system (1). The daylight harvesting system comprises a light distribution device comprising a light inlet (2) for receiving incident light (3), and a light outlet (4) for providing output light (5) received by the light inlet into an interior space. A light sensor (6) is arranged to receive and measure a light level of the incident light and to provide a measurement signal representative thereof. Control circuitry (7) is arranged to receive the measurement signal, and to provide a control signal based on the measurement signal to an artificial light source (8) placed at the light outlet. The light sensor is placed relative the light inlet such that the incident light received by the light sensor exclusively is affected by the incident light as received by the light inlet.
摘要:
An analyte measuring device (5) for monitoring, for example, levels of a tissue analyte (e.g., bilirubin), includes a number of narrow band light sources (10), each narrow band light source being structured to emit a spectrum of light covering a number of wavelengths, and a number of detector assemblies (15) configured to receive light reflected from the transcutaneous tissues of a subject. Each of the detector assemblies includes a filter (20) and a photodetector (25), each filter being structured to transmit a main transmission band and one or more transmission sidebands, wherein for each narrow band light source the spectrum thereof includes one or more wavelengths that fall within the transmission band of at least one of the filters, and wherein for each narrow band light source the spectrum thereof does not include any wavelengths that fall within the one or more transmission sidebands of any of the optical filters.
摘要:
An electric light and external light control system for a space with a dual-mode light sensor is proposed. The dual-mode light sensor (106) measures and computes the amount of external light and electrical light incident on its sensing surface. The individual measured light components (total light, electric light and external light) are transmitted to the window treatment controller (103) and the electric light controller (102). The controllers (102, 103) use this information to optimally control the lighting condition to meet user requirements and reduce energy consumption. Both controllers (102, 103) operate concurrently and independently, but are linked via the dual-mode sensor (106).
摘要:
The invention relates to an optical detector device (1) for generating at least one electrical output signal in response to a received beam of light, comprising an optical band-pass filter (3a), adapted to receive the beam of light and to provide a filtered beam of light, which filter (3a) has a transmission wavelength which increases in direction of at least one axis (4) and an array of detector elements (2) arranged in direction of the axis (4) to receive the filtered beam of light for generating the electrical output signal.
摘要:
A controllable light angle selecting device (100) is provided. It comprises a fixed light selecting means (110) adapted to transmit light incident thereon within a limited acceptance angle, optically connected to at least one light redirecting means (120) capable of obtaining a variable angular difference between light entering said light redirecting means (120) and light exiting said light redirecting means. A photometer, comprising a controllable light angle selector arranged in the path of light between a light source and a light measuring sensor is also provided.
摘要:
Provided is a filed-effect transistor with an organic semiconductor material showing ambipolar behaviour. Thereto, the organic semiconductor material enabling the ambipolar behaviour is a material with a small band gap.
摘要:
The invention relates to an apparatus for measuring light and a luminaire comprising the apparatus. The apparatus measures light from a first light emitting device located in a first position and comprises a light transmissive device having at least three surfaces: a first surface, a second surface and a third surface; and a photo sensor. The first surface is arranged for incoming light from the first position, the second surface is arranged for reflecting incident light within the light transmissive device and the third surface is arranged such that outgoing light incides onto the photo sensor.
摘要:
The package (100) of the invention comprises at least one semiconductor device (30) provided with bond pads (32); an encapsulation (40), an interconnect element (20) and a heatsink (90). This element comprises a system of electrical interconnects (12) and is at least substantially covered by a thermally conductive, electrically insulating layer (11) at a first side (1) and that is provided with an electric isolation (13) at a second side (2), such that the isolation (13) and the thermally conducting layer (11) electrically isolate the electrical interconnects (12) from each other. At least one component of the encapsulation (40) and the heatsink (90) has an interface with the interconnect element (20), which interlace extends over substantially the complete side (1,2) to which the said component (40,90) is attached.