Light fixture system with high-resolution dimming

A controller for controlling a light fixture, wherein said light fixture comprises:

• a plurality of light sources arranged in a plurality of groups, wherein each group comprises one or more light sources,
• wherein according to at least one setting of the light fixture, the controller is arranged to control the plurality of groups so that each of the groups is repeatedly switched on and off,
• wherein
• at a first point in time,
• one or more groups are switched on, and
• other one or more groups are switched off,
• at a second point in time,
• one or more of the groups which were switched on at the first point in time are switched off, and
• one or more of the groups which were switched off at the first point in time are switched on, and
• at a third point in time,
• one or more of the groups which were switched on at the second point in time are switched off, and
• one or more of the groups which were switched off at the second point in time are switched on, and
• wherein a period of time between the first point in time and the third point in time is equal to or less than 1/10 s.

A method of operating a light fixture, wherein said light fixture comprises:

• a plurality of light sources arranged in a plurality of groups, wherein each group comprises one or more light sources,
• said method comprising controlling the plurality of groups so that each of the groups is repeatedly switched on and off,
• wherein
• at a first point in time,
• one or more groups are switched on, and
• other one or more groups are switched off,
• at a second point in time,
• one or more of the groups which were switched on at the first point in time are switched off, and
• one or more of the groups which were switched off at the first point in time are switched on, and
• at a third point in time,
• one or more of the groups which were switched on at the second point in time are switched off, and
• one or more of the groups which were switched off at the second point in time are switched on, and
• wherein a period of time between the first point in time and the third point in time is equal to or less than 1/10 s.