摘要:
A computer-vision system equipped with a first camera and a second camera spaced apart from each other enables acquisition of a first image (ImgL) and a second image (ImgR) of a light beam that propagates from a light-beam source towards a target position of the light beam. The first image (ImgL) and the second image (ImgR) of the beam differ from each other as a result of the first camera and the second camera being spaced apart from each other. The system produces (206) a disparity map of the first image (ImgL) and second image (ImgR) of the beam that is to be projected in a three-dimensional point cloud starting from the disparity map according to point-cloud-projection calibration data (CC) that set in relation disparity maps for reference images with respective three-dimensional point clouds. The points of the three-dimensional point cloud projected are clustered together (208) to produce a geometrical line (210) that extends between the light-beam source and the target position of the light beam. It is thus possible, for example, to locate an actual target position of the light beam, which is to be compared with a desired target position, detecting the relative offset thereof. The orientation of the beam can then be adjusted as a function of the offset detected, causing the light beam to propagate towards the desired target position.
摘要:
A lighting device (10) includes: - a channel-shaped elongate profiled body having a central or web portion (12) and two side portions (120) sidewise of the web portion (12), a profiled body (12, 120) having mutually opposed undercuts (122) opening inwardly of the channel shape of profiled body (12, 120), and - a light radiation source assembly (16) including an elongate support board (16a) carrying one or more light radiation sources, e.g. LED sources (16b), the support board (16a) having longitudinal sides extending into the said undercuts (122), wherein the light radiation source assembly (16) is retained by the channel-shaped profiled body (12, 120). Some embodiments may include: - a first sealing mass (14) located between the web portion (12) of the profiled body (12, 120) and the light radiation source assembly (16), - a second sealing mass (18) on the face of the support board (16a) opposed to the web portion (12) between one and the other said side portions (120).
摘要:
A lighting device (10) includes an elongated profiled body (12) including at least one light permeable material, e.g. a polymeric material, having a mouth portion (12a) where an e.g. white light radiation source assembly (16) is arranged which includes one or more electrically powered light radiation sources (16b) facing said profiled body (12). The light radiation emitted by said light radiation source assembly (16) propagates through said the light permeable material of the profiled body (12). The material of the profiled body (12) includes pigments (12b) and is at least in part (12c) light diffusive, whereby, by propagating through profiled body (12), said light radiation becomes a coloured light radiation of a colour determined by the pigments and with a homogeneous near field distribution.
摘要:
A lighting device includes: - an electrically powered light radiation source (10), e.g. a LED source, having a front light radiation emitting side and a back side with electrical contacts (14) for the light radiation source, - a support member (18) with a cavity (20) receiving light radiation source (10), with light radiation source (10) arranged in cavity (20) of support member (18), the front side of light radiation source (10) being inserted in the cavity (20) and said electrical contacts (14) being exposed, - an electrical contact member (22) including resilient electrical contact formations (26) in electrical contact with electrical contacts (14) at the back side of said light radiation source (10).
摘要:
A lighting device (10) includes a channel-shaped elongated profiled body (12) including a light permeable material and having a mouth portion (12a), and a light radiation source assembly (16) arranged at said mouth portion (12a) and including a support board (16a) having one or more electrically powered light radiation sources (16b), e.g. LED light radiation sources, thereon facing profiled body (12). The mouth portion (12a) of the profiled body (12) includes shoulder formations (120a, 120b) arranged sidewise of said mouth portion (12), with said support board (16a) abutting against said shoulder formations (120a, 120b).
摘要:
A lighting module (20) comprising a power line (OUT+) for receiving a power supply current and a ground line (GND, OUT-). The lighting module (20) comprises a segmentation point (200a) for cutting the lighting module (20) into two parts, wherein a first set of light sources (210a) is upstream of the segmentation point (200a), and at least a second set of light sources (210a) is downstream of said segmentation point (200a), wherein the first (210a) and second (210b) sets of light sources are connected in series. In particular, the lighting module (20) comprises a resistive element (206a) connected to the intermediate point between the first (210a) and the second (210b) set of light sources, and the ground line (GND, OUT-). This resistive element (206a) is configured in such a way that: a) when the lighting module (20) has not been cut at the segmentation point (200a), the resistive element (206) has a resistance which is greater than the resistance of the portion of the lighting module (20) downstream of the segmentation point (200a), and b) when the lighting module (20) has been cut at the segmentation point (200a), the resistive element (206) has a resistance which is less than the resistance of the portion of the lighting module (20) downstream of the segmentation point (200a). (Figure 4a)
摘要:
A device for mounting lighting sources on a substrate includes a channel-like mounting frame provided with fixing formations for fixing on said substrate, said mounting frame defining a cavity for receiving said lighting source with said lighting source resting on said substrate, a slider member which can be positioned in said cavity of said mounting frame to urge said lighting source toward said substrate; said slider member being slidable with respect to said mounting frame between an insertion position and a locking position, wherein said mounting frame and said slider member bear complementary engagement formations cooperating in a ramp-like manner to force said slider member and the lighting source urged thereby toward said substrate when said slider member is advanced from said insertion position toward said locking position.
摘要:
A lighting assembly having a base body configured as a heat sink (18) having a front surface (18a), a board (14) carrying a light radiation source (12) applied on the front surface of the heat sink, and a fixing element (20) mounted on the front surface of the heat sink with the board arranged therebetween. The fixing element includes a window (22) which leaves at least partly uncovered the light radiation source, such window having side walls (220) which surround the light radiation source and spread outward to form a reflector for the light radiation.
摘要:
A lighting device which may be used, e.g., in the show and entertainment sector comprises a light source configured to emit a light beam through an afocal projection optics (500, 500', 600) along a propagation path of the light beam from a negative lens (500) to a positive lens (600). The lighting device (10) comprises a further negative lens (500') interposed and mobile along the propagation path of the light beam from the negative lens (500) to the positive lens (600), as well as an optical element interposed in the propagation path of the light beam between the negative lens (500) and the further negative lens (500'). The optical element may be selected from a cylindrical lens (CL), a prism (P) and an axicon (A), such elements being optionally mounted on a mobile support member such as a motorized effect wheel (EW), thereby enabling switching from one optical element to another different optical element (CL, P, A) in order to implement, by means of an afocal projection system, various optical effects similar to those which can be obtained by means of a gobo.