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:
The present invention relates to a spectral detection device (100) for detecting spectral components of received light, wherein the spectral detection device (100) comprises a filtering structure (110) arranged to filter the received light and output light with a wavelength within a predetermined wavelength range; and a light sensor (120) arranged to detect the light output by the filtering structure (110), wherein the filtering structure (110) is variable to allow a variation of the predetermined wavelength range over time.The arrangement enables a compact spectral detection device that may be provided at a low cost.
摘要:
The present invention relates to a spectral detection device (100) for detecting spectral components of received light, wherein the spectral detection device (100) comprises a filtering structure (110) arranged to filter the received light and output light with a wavelength within a predetermined wavelength range; and a light sensor (120) arranged to detect the light output by the filtering structure (110), wherein the filtering structure (110) is variable to allow a variation of the predetermined wavelength range over time.The arrangement enables a compact spectral detection device that may be provided at a low cost.
摘要:
Disclosed is a controllable light angle selecting device that includes a fixed light selecting means for transmitting light within a limited acceptance angle, optically connected to at least one light redirecting means capable of achieving a variable angular difference between light entering said light redirecting means and light exiting said light redirecting means. Also disclosed is a photometer employing such controllable light angle selecting device and arranged in the path of light between a light source and at least one light measuring sensor arranged to receive at least part of the light exiting from the controllable light angle selecting device.
摘要:
A detector for receiving light impinging at a reception point and for measuring, for a plurality of angles of incidence, at least one property of the light. The detector includes a plurality of light sensors, each of which is associated with an acceptance interval (which defines the angle of incidence which a light beam must have to reach the light sensor) and at least two acceptance intervals are different from one another. The detector further includes an optical conductor for conducting a light beam from the reception point to a particular light sensor, but only if the angle of incidence of the light beam belongs to the acceptance interval associated with the particular light sensor.
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:
This invention relates to a light angle selecting light detector device comprising a detector unit which is arranged to receive light selected by a selector unit. The device comprising at least one set of light passing areas. Each set of light passing areas consists of a first light passing area having a first size, which first light passing area is located on a first surface, and a second light passing area having a second size, which second light passing area is located on a second surface. The first light passing area and the second light passing area are arranged with a lateral displacement and form a light path from the first surface to the second surface for light having an incident angle between a maximum angle and a minimum angle.
摘要:
This invention relates to a light angle selecting light detector device comprising a detector unit which is arranged to receive light selected by a selector unit. The device comprising at least one set of light passing areas. Each set of light passing areas consists of a first light passing area having a first size, which first light passing area is located on a first surface, and a second light passing area having a second size, which second light passing area is located on a second surface. The first light passing area and the second light passing area are arranged with a lateral displacement and form a light path from the first surface to the second surface for light having an incident angle between a maximum angle and a minimum angle.
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.