Abstract: A control system for a stadium lighting system comprising a plurality of luminaires installed within the stadium to illuminate a pitch within the stadium in accordance with a light plan containing aiming information for each luminaire is disclosed. The control system comprises a data storage device storing the light plan and a controller communicatively coupled to the data storage device, the controller being responsive to object tracking information for an object travelling across the pitch. The controller is adapted to determine a direction of travel of the object from the object tracking information; evaluate the aiming information for each luminaire to identify if at least one luminaire is arranged to generate a luminous output in an aiming direction coinciding with said direction of travel; and generate a dimming level adjustment signal for the at least one identified luminaire to reduce the intensity of said luminous output.

Abstract: The described embodiments relate to systems, methods, and apparatuses for estimating luminaire lifetimes using extrapolated sensor data. During a lifetime of a luminaire (108), a sensor (206) of the luminaire can become inoperable well before the entire luminaire becomes inoperable. In order to estimate when the luminaire will become inoperable, sensor data (504) should be continually tracked even after the sensor fails. In order to continue obtaining sensor data after the sensor fails, the sensor data can be extrapolated based on a correlation between previously received sensor data and other environmental data. The extrapolated sensor data can be tracked after the sensor becomes inoperable so that estimates of luminaire lifetime can be more accurate, compared to not having any sensor data. In this way, maintenance of luminaires can be scheduled according to predictions of luminaire lifetimes, rather than the occurrence of a luminaire failure.

Abstract: A method (300) for characterizing a lighting environment using thermal imaging includes the steps of: providing (310) a lighting unit (10) comprising a light source (12), a thermal imager (32), and a controller (22); obtaining (330), using the thermal imager, one or more thermal images of one or more surfaces (52) within the lighting environment; extracting (340), by the controller using the one or more thermal images, a thermal shadow (54) on one or more surfaces within the lighting environment; determining (360), from the thermal shadow, a depth queue for an object (52) associated with the thermal shadow; and characterizing (370), by the controller using the determined depth queue, the object.

Abstract: A method (400) for estimating a trajectory of an object (58) using thermal imaging, the method comprising the steps of: (i) obtaining (420), using a thermal imager (32), a thermal image (54) of one or more surfaces (50) within an environment (52); (ii) detecting (440), within a single obtained thermal image, a heat signature (56) from an object on the one or more surfaces; (iii) extracting (450), from the single obtained thermal image, a trajectory of the object along the one or more surfaces within the image; and (iv) estimating (460), from the extracted trajectory, a trajectory of the object within the environment.

Abstract: A method (300) for measuring illumination by a lighting unit (10) of a target surface (50) within a lighting environment (100) includes the steps of: illuminating (320), with a light source (12) of the lighting unit, the target surface; detecting (330), with a light sensor (32), a light intensity for a plurality of locations of the target surface; detecting (340) parameter of the lighting environment; selecting (350), by a controller of the lighting unit, a subset of the plurality of light intensities based on the detected parameter of the lighting environment; and estimating (360), using the selected subset of light intensities, a lux of the target surface.

Abstract: A method (300) for detecting a dangerous environmental condition within a lighting environment (100) includes the steps of: providing (310) a lighting network (200) having a plurality of lighting units (10) each with a light source (12), at least some of the plurality of lighting units including a range sensor (32); obtaining (330), by the range sensors, range information; determining (360), based at least in part on the obtained range information, a depth of precipitation or accumulation at a first lighting unit; and determining (370), based on the determined depth, a dangerous environmental condition at the first lighting unit.

Abstract: A luminaire comprising: at least one light source arranged to emit light to illuminate an outdoor environment of the luminaire; at least one sensor, each of the at least one sensor arranged to provide a sensor output signal; a control module arranged to receive the sensor output signal from each of the at least one sensor and configured to communicate with a component of the luminaire based on the at least one sensor output signal; and a precipitation detection module arranged to receive the at least one sensor output signal and configured to detect occurrence of precipitation in the outdoor environment based on the at least one sensor output signal and control the light emitted from the at least one light source based on said detection.

Abstract: The present application relates to a shaving guidance system (10) for guiding a user during a shaving procedure, the system comprising an image sensor (30) configured to register an image of a part of the body of the user, an image data analyzer (41) configured to determine a local hair-growth direction based on data in the image, a controller (40) configured to generate instructions about a direction in which a hair cutting device (20) is to be moved in dependence on the determined local hair-growth direction, and a feedback system (130) configured to provide the instructions to the user.

Abstract: A method (300) for characterizing a lighting environment using thermal imaging includes the steps of: providing (310) a lighting unit (10) comprising a light source (12), a thermal imager (32), and a controller (22); obtaining (330), using the thermal imager, one or more thermal images of one or more surfaces (52) within the lighting environment; extracting (340), by the controller using the one or more thermal images, a thermal heating 5 pattern for one or more surfaces within the lighting environment; and characterizing (360), by the controller using the extracted thermal heating pattern, the one or more surfaces within the lighting environment.

Abstract: A light emitting device (100) for emitting a beam of light is disclosed. The light emission of the light emitting device (100) comprises an embedded code. The light emitting device (100) comprises a beam shape controller (102) for controlling a shape of the beam of light and a first processor connected to the beam shape controller, arranged for generating the embedded code. The first processor (104) is further arranged for embedding a message in the embedded code based on the shape of the beam of light. This allows the light emitting device (100) to communicate information to a receiving device based on its effect area (i.e. the illuminated area). This information may, for example, comprise information about the beam shape and size, which may be used to determine an area wherein the receiving device is located relative to the light emitting device (100).

Abstract: In various embodiments, an energy harvesting unit (102, 402, 502, 602, 702, 902) may be configured to convert captured light into current. Logic (104, 404, 504, 604, 704, 904) operably coupled with the energy harvesting unit may be configured to detect a current fluctuation at the energy harvesting unit. The current fluctuation may be caused by a corresponding fluctuation in light captured by the energy harvesting unit. The logic may be further configured to determine that the detected current fluctuation matches a predefined current fluctuation pattern associated with deliberate modulation of light captured by the energy harvesting unit. In some embodiments, the logic may generate appliance control data for controlling one or more appliances (120, 130, 132) based on the matching predefined current fluctuation pattern. In some embodiments, the logic may control light output by one or more light sources (960).

Abstract: A lighting unit (10) for estimating an amount of daylight in a lighting environment includes: a light source (12); a filter (330) configured to block incident light in a first wavelength range, the incident light comprising both daylight and non-daylight incident light; a camera (32) configured to receive the filtered incident light and generate a detection signal (342), the filtered incident light being outside the first wavelength range; and a controller (22) in communication with the camera and configured to process the detection signal to estimate the amount of daylight incident light.

Abstract: A method (500) for calibrating a first sensor (32) of a lighting system (100) includes the steps of: illuminating (520), with a light source (12) of the lighting system, a target surface (50); obtaining (530), with the first sensor, sensor data from a first region (52) of the target surface; obtaining (540), with a second sensor (54), sensor data from a second region (54), where the second region is within the first region; calibrating (560), using the sensor data obtained with the second sensor, the first sensor; and adjusting (570) a parameter of the lighting unit based on data from the calibrated first sensor.

Abstract: Methods, systems, and apparatus are described herein for adjusting one or more lighting properties based on skill level of one or more players of a game. In various embodiments, (502) a skill disparity between at least two players of a game may be identified (502). A lighting scheme may be selected (504) to reduce an impact the skill disparity has on an outcome of the game. One or more light sources (104, 304) may be operated (508) to emit light in accordance with the lighting scheme.

Abstract: A luminaire comprising: at least one light source for emitting light to illuminate an environment; an optical sensor comprising an array of photodetectors, the sensor configured to output image data indicative of the intensity of light incident on the photodetectors; and a controller arranged to receive the image data, the controller comprising: a presence detection module configured to process the image data to detect whether a being is present in said environment, and control the light emitted by the light source(s) responsive to said detection; a light sensing module configured to process the image data to determine a light level in said environment and control the light emitted by the light source(s) based on said light level; and a commissioning module configured to control the controller to operate in a commissioning mode based on the image data; and configure the luminaire in accordance with a commissioning command received whilst the controller is operating in the commissioning mode.

Abstract: A control system for a stadium lighting system comprising a plurality of luminaires installed within the stadium to illuminate a pitch within the stadium in accordance with a light plan containing aiming information for each luminaire is disclosed. The control system comprises a data storage device storing the light plan and a controller communicatively coupled to the data storage device, the controller being responsive to object tracking information for an object travelling across the pitch. The controller is adapted to determine a direction of travel of the object from the object tracking information; evaluate the aiming information for each luminaire to identify if at least one luminaire is arranged to generate a luminous output in an aiming direction coinciding with said direction of travel; and generate a dimming level adjustment signal for the at least one identified luminaire to reduce the intensity of said luminous output.

Abstract: A gating module for use in a lighting system comprising at least one sensor module each comprising at least one sensor and a lighting network comprising at least one luminaire, the gating module configured to: receive sensor data obtained by the at least one sensor module; receive an input signal; determine based on the input signal and predetermined rules stored in a memory which parts of the sensor data are to be supplied to at least one luminaire controller for use in controlling the at least one luminaire; and only supply the determined parts of the sensor data to the at least one luminaire controller.

Abstract: Disclosed is an illumination system (100) and method (600) for generating a predefined illumination pattern on an area (10).

Abstract: A method (300) for measuring illumination by a lighting unit (10) of a target surface (50) within a lighting environment (100) includes the steps of: illuminating (320), with a light source (12) of the lighting unit, the target surface; detecting (330), with a light sensor (32), a light intensity for a plurality of locations of the target surface; detecting (340) parameter of the lighting environment; selecting (350), by a controller of the lighting unit, a subset of the plurality of light intensities based on the detected parameter of the lighting environment; and estimating (360), using the selected subset of light intensities, a lux of the target surface.

Abstract: A lighting aiming system for aiming a stadium lighting system, the lighting aiming system comprising: a luminaire (5), the luminaire having a mounting position and an orientation and configured to generate a light beam along an optical axis; a camera (1) configured to capture an image, the camera (1) coupled to the luminaire and having a defined relationship between a field of view of the camera and the optical axis; a memory (31) configured to store lighting information comprising a desired aiming location of the luminaire, and the memory further configured to store feature information comprising an expected location of at least one feature; a processor (33) configured to determine and output aiming information based on the feature information, lighting information and image to enable a determination on whether the luminaire is correctly aimed.