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 present invention relates to a control system (13) and method for controlling the light output of an emitting unit (11) having at least one LED (15) and emitting light of at least one color. The control system (13) comprises a feedback based on a detection unit (19) detecting the light output of the emitting unit (11), a detection pulse generator (27), a suppression unit (23) suppressing environmental light interferences in detected light, and a control unit (21) for controlling the light output of the emitting unit on basis of a comparison between a reference signal representing a desired light output of the emitting unit and an output signal of the suppression unit. The detection pulse generator (27) generates detection pulses a-periodically. Thus, an a-periodicity is introduced into the feedback processing of the light output. This provides a possibility by means of conventional suppression algorithms to eliminate or reduce interfering environmental light, particularly pulsed light.
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:
The present invention relates to a method for providing a lighting setting for controlling a lighting system (10a, 10b) to produce a desired lighting effect. The method comprises, in a remote server (24), receiving data related to the lighting system and generating a lighting setting related to the desired lighting effect and adapted according to the received lighting system data, and sending the adapted lighting setting from the remote server to the lighting system. Thus, when the lighting system receives the lighting setting, the lighting setting is already adapted according to that specific lighting system, whereby the desired lighting effect can be produced correctly. There is no immediate need for any post download adjustment of the light setting. The invention also relates to a corresponding remote server.
摘要:
A light-emitting electrochemical cell comprising at least two electrodes, and an electroluminescent material arranged between said electrodes, wherein said electroluminescent material comprises a charged metal complex is disclosed. The charged metal complex has at least one metal atom selected from the group consisting of Ir, Os, Pt, Re and Zn, with the proviso that said metal complex is different from [Ir(ppy)2(dtb-bpy)]+(PF6) and [Os(bpy)2(dppe)]2+(PF6)2. A method for manufacturing such a light-emitting electrochemical cell is also disclosed.
摘要:
The invention relates to an interference filter (100) for receiving an incident light (135) and selecting a light component of the incident light to be transmitted (115). The interference filter (100) includes a metal mirror (110), a dielectric mirror (130), and a spacer (120) placed between the metal mirror (110) and the dielectric mirror (130). The metal mirror (110) and the dielectric mirror (130) are configured to enable optical interference in the spacer (120) to select the light component of the incident light to be transmitted (115). Using one metal mirror and one dielectric mirror allows achieving a spectral response with high finesse and large rejection band while reducing the total number of layers in the filter and reducing the number of additional filters necessary for removing transmitted side bands, relative to prior art approaches.
摘要:
Light sensors (1) are used in lighting applications, especially in combination with LEDs, to control and/or adapt the color point of light sources. Costs and/or performance of the light sensor (1) are essential in order to guarantee cost-effective light sources with reproducible color points. This aim is achieved by a light sensor (1) comprising a light diffuser (10), an optical non-transparent housing (11) having at least one window (12), at least one interference filter (13) and at least two photo sensors (14). The light diffuser (10) is arranged in such a way that light from outside the optical non-transparent housing (11) has to pass the light diffuser (10) so as to enter the interior of the optical non-transparent housing (11) via the window (12). The interference filter (13) and the at least two photo sensors (14) are arranged in the interior of the optical non-transparent housing (11), which interference filter (13) is arranged between the window (12) and the at least two photo sensors (14).
摘要:
The invention relates to a color-controlled illumination device (1) with a number of light emitters, for example LEDs (L1, L2, L3, L4), of different primary colors. Photosensors (D1, D2, D3) consisting of a photodiode (20) covered with different dielectric filter layers (21) measure the light output of the light emitters (L1, L2, L3, L4) with distinct oscillating sensitivity curves that extend over the whole relevant spectral range. In a control unit (14), the actual color point of the illumination device (1) is calculated and the emissions of the light emitters (L1, L2, L3, L4) are individually adapted in order to match a target color point ((X,Y,Z)target) given with e.g. CIE tri-stimulus values.
摘要:
Light sensors (1) are used in lighting applications, especially in combination with LEDs, to control and/or adapt the color point of light sources. Costs and/or performance of the light sensor (1) are essential in order to guarantee cost-effective light sources with reproducible color points. This aim is achieved by a light sensor (1) comprising a light diffuser (10), an optical non-transparent housing (11) having at least one window (12), at least one interference filter (13) and at least two photo sensors (14). The light diffuser (10) is arranged in such a way that light from outside the optical non-transparent housing (11) has to pass the light diffuser (10) so as to enter the interior of the optical non-transparent housing (11) via the window (12). The interference filter (13) and the at least two photo sensors (14) are arranged in the interior of the optical non-transparent housing (11), which interference filter (13) is arranged between the window (12) and the at least two photo sensors (14).
摘要:
An imaging device (300), a lighting control system (400) including the imaging device (300), and a method for aligning with a reference image lighting of a site (220) illuminated by least one light source (240) are provided. The imaging device (300) and/or the lighting control system (400) include at least one processor (410) configured to control the imaging device (300) and the light source (240). The imaging device (300) has an array of reflectors (320) including selectable reflectors; a lens configured to receive image rays (330) for forming an image including pixels and provide the image rays (330) to the array of reflectors (320) for reflection as reflected rays (355); and a detector (310) configured to receive the reflected rays (355) and detect characteristics of each pixel of the image for form a resolved image. The processor (410) is further configured to sequentially select each reflector (350) of the array of reflectors (320) for reflecting the reflected rays (355) towards the detector (310).