摘要:
A sensor arrangement comprises at least a first, a second, and a third light sensor (1, 2, 3). A three-dimensional framework comprises at least a first, a second, and a third connection means (f1, f2, f3) which are connected to the at least first, second, and third light sensor (1, 2, 3), respectively. The first, the second, and the third connection means (f1, f2, f3) are configured to align the at least first, second, and third light sensor (1, 2, 3) along a first, second, and third face of a polyhedron-like volume (Vol), respectively, such that the sensor arrangement encloses the polyhedron-like volume (Vol). The invention also relates to a method for operating the sensor arrangement.
摘要:
Systems, devices, and methods for accurately imaging chemiluminescence and other luminescence are disclosed. A compact, flat-bed scanner having a light-tight enclosure, one or more detector bars of linear charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS) imaging chips, and high working numerical aperture (NA) optics scans closely over a sample in one direction and then the opposite direction. Averages or other combinations of intensity readings for each pixel location (x, y) between the two or more passes are averaged together in order to compensate for luminescence that varies over time. On-chip pixel binning and multiple clock frequencies can be used to maximize the signal to noise ratio in a CCD-based scanner.
摘要:
The invention relates to a method and a system for positioning an apparatus (10) for monitoring a parameter of one or more parabolic reflectors (15) of a solar thermal field (122), wherein the method comprises positioning the apparatus (10) at a first field location (105) responsive to the position of said respective parabolic reflector (15), acquiring information of an absorber tube (38) of said respective parabolic reflector (15), and positioning the apparatus (10) at the second field location (110) responsive to the information of the absorber tube (38), the second field location (110) being beyond the focus of said respective parabolic reflector (15).
摘要:
A method and an apparatus for directing an optical receiver (1) toward a light source, using a plurality of light detectors (9') arranged around the receiver's (1) optical axis (10) to check where light (L) hits the light detectors (9') relative to the optical axis (10), the method including the steps of: A) arranging the receiver (1) defocused to embrace a largest possible field of view of the area wherein the light source may be located, and refracting the light with largest possible spread angle; B) letting the receiver (1) search for the light source until the light (L) hits at least one of the light detectors (9'); C) calculating where the light hits relative to the optical axis, and adjusting the receiver, directing the light toward the optical axis; D) reducing the field of view embraced by the receiver; and E) repeating the steps C and D until the light is concentrated in a smallest possible area.
摘要:
The invention relates to a photon detector (1) comprising, in addition to an immobilisable photon-sensitive element (5), a photon transmission element (7). Said photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element (5) and transmitted by the photon transmission element (7), for example, by modifying an absorption property or a defocussing property of the photon transmission element (7). Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilisation range. The invention also relates to a distancing device comprising said type of photo detector.
摘要:
Le procédé dans lequel on dispose de moyens (1) de mesure de la luminance ayant un certain cône de mesure α, on place les moyens (1) par rapport à la voirie C à une certaine hauteur h et on les oriente par rapport à la localisation de l'observateur selon une certaine direction D, on met en oeuvre les moyens (1) pour mesurer la luminance d'une certaine zone Z de la voirie C à une certaine distance d de la localisation de l'observateur, est caractérisé en ce que, en combinaison : - on sélectionne des moyens (1) de mesure de la luminance ayant un cône de mesure α choisi plus large que normalement, c'est-à-dire supérieur à 2min d'arc dans le plan vertical et à 20 min d'arc dans le plan horizontal, on dispose ces moyens (1) de mesure de la luminance par rapport à la voirie C à une hauteur h choisie moins élevée que normalement, c'est-à-dire inférieur à 1,5m, et on les oriente par rapport à la localisation de l'observateur selon une direction D apte à mesurer la luminance dans une certaine zone Z située par rapport à la localisation de l'observateur à plus courte distance que normalement, c'est-à-dire inférieure à 60m ; - on déplace les moyens (1) sur et le long de la voirie C et, lors de leur déplacement, on les met en oeuvre pour effectuer une mesure de la luminance de la zone Z en correspondance avec le cône de mesure α choisi, la hauteur h choisie et la direction D de mesure choisie, et - au moins lors des mesures on maintient substantiellement constant la hauteur h et la direction D de mesure.
摘要:
There is provided a scanning system, including a main housing, and at least one optical wedge (12) rotatable about a shaft means (40) located within the main housing, wherein a laser beam having an optical axis and incident on the optical wedge (12), is refracted at least once by the wedge; characterized in that the shaft means (40) passes through the center of the at least one wedge (12) and that the optical axis of the incident laser beam is substantially parallel to, but laterally offset from, the shaft means (40).
摘要:
The invention relates to a device that automatically tracks the position of the sun for solar modules. The device comprises a substructure, a revolving platform (4) that is rotatably mounted on the substructure, an optical sensor (14) and a pivoting frame (31) that is located on the revolving platform. A rotary drive rotates the revolving platform (4) and a pivoting drive pivots the frame (31) up and down. The device is extremely compact and robust and is particularly suitable for mounting on vehicles.
摘要:
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.