Method of illuminating an environment using an angularly varying light emitting device and an imager

A method of illuminating an environment comprising:

• a) angular cycling angular light flux output in a plurality of different angular bins of an angularly varying light emitting device by increasing and decreasing light flux output from each light source of a plurality of light sources, each light source of the plurality of light sources is associated with a different angular bin of the plurality of different angular bins;
• b) capturing using an imager a plurality of images of the environment synchronized with the light flux output from each light source of the plurality of light sources;
• c) determining a measured or estimated illuminance in a first spatial zone corresponding to a first angular bin of the plurality of different angular bins due to each light source of the plurality of light sources based at least in part on analysis of the plurality of images of the environment;
• and
• d) independently adjusting the light flux output from one or more light sources of the plurality of light sources to achieve a target illuminance in the first spatial zone based at least in part on the measured or estimated illuminance in the first spatial zone.

A method of illuminating a surface in an environment comprising:

• a) angular cycling angular light flux output in a plurality of different angular bins of an angularly varying light emitting device by increasing and decreasing light flux output from each light source of a plurality of light sources, each light source of the plurality of light sources is associated with a different angular bin of the plurality of different angular bins;
• b) capturing using an imager a plurality of images of the environment synchronized with the light flux output from each light source of the plurality of light sources;
• c) determining a measured or estimated illuminance of the surface in the environment due to each light source of the plurality of light sources based at least in part on an analysis of the plurality of images of the environment;
• and
• d) independently adjusting the light flux output from one or more light sources of the plurality of light sources to achieve a target illuminance at the surface based at least in part on the measured or estimated illuminance of the surface.