Method for characterizing illumination of a target surface
AssigneePhilips Lighting Holding B.V.
InventorsHARRY BROERS, RUBEN RAJAGOPALAN
Life of this patent
Estimating the term…
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.
Claims14
A method for measuring illumination by a lighting unit of a target surface within a lighting environment, the method comprising the steps of:
- illuminating, with a light source of the lighting unit, the target surface;
- detecting, with a light sensor, a light intensity for a plurality of locations of the target surface;
- detecting a parameter of the lighting environment;
- detecting, using the detected parameter, an obstruction situated in the lighting environment between the light source and the target surface;
- selecting, 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 the detected obstruction;
- and
- estimating, using the selected subset of light intensities, a lux of the target surface.
A lighting unit configured to illuminate a target surface within a lighting environment, the lighting unit comprising:
- a light source;
- a light sensor configured to detect a light intensity for a plurality of locations of the target surface;
- a sensor configured to detect a parameter of the lighting environment;
- a sensor configured to detect, using the detected parameter, an obstruction situated in the lighting environment between the light source and the target surface;
- and
- a controller configured to select a subset of the plurality of light intensities based on the detected parameter of the lighting environment and the detected obstruction, and to determine, using the selected subset of light intensities, a lux of the target surface.
A system configured to illuminate a target surface within a lighting environment, the system comprising:
- a lighting unit comprising a light source and a controller;
- a light sensor configured to detect a light intensity for a plurality of locations of the target surface;
- and
- a sensor configured to detect a parameter of the lighting environment;
- a sensor configured to detect, using the detected parameter, an obstruction situated in the lighting environment between the light source and the target surface;
- wherein the controller is configured to select a subset of the plurality of light intensities based on the detected parameter of the lighting environment and the detected obstruction, and to estimate, using the selected subset of light intensities, a lux of the target surface.
Dependencies are inferred from the claim text.