Direct drive AC LED light

An array of light emitting diodes comprising:

• a plurality of light emitting diode (LED) packages arranged on a circuit board in a plurality of clusters, each LED package contains at least three diodes having separate dies, where a distance between adjacent LED packages within a cluster is smaller than a distance between LED packages in adjacent clusters;
• a plurality of stages comprising a plurality of LEDs;
• a plurality of floating switches, wherein the plurality of floating switches is coupled to the plurality of stages, respectively, and wherein LEDs within the LED package are in different stages of the plurality of stages;
• wherein LEDs in a cluster have a same positional order in the plurality of stages;
• and
• wherein LEDs in adjacent clusters have adjacent positional orders in the plurality of stages.

A system comprising:

• a plurality of light emitting diodes (LEDs);
• a plurality of clusters comprising the plurality of LEDs;
• a
• plurality of stages comprising the plurality of clusters;
• a plurality of floating switches, wherein each of the plurality of floating switches is connected to a corresponding one of the plurality of stages;
• and
• a variable resistance having at least two set points configured to maintain control resolution of the system;
• a closed loop feedback mechanism for each color LED in a luminaire, wherein the closed loop feedback mechanism provides feedback of the each color LED over time and temperature;
• and
• wherein the closed loop feedback mechanism comprises an emitter and a detector housed within a same enclosure, wherein the emitter and the detector are shielded from ambient light and from each other in order to maintain measurement integrity.

A system, comprising:

• a plurality of light emitting diodes (LEDs);
• a plurality of clusters comprising the plurality of LEDs;
• a
• plurality of stages comprising the plurality of clusters;
• a plurality of floating switches, wherein each of the plurality of floating switches is connected to a corresponding one of the plurality of stages,
• wherein a subset of the plurality of LEDs are arranged on a first side of a circuit board and at least one LED of each color is arranged on a second side of the circuit board opposite to the first side;
• a light sensor disposed on a second circuit board facing the at least one LED of each color;
• and
• a controller configured to receive detection results from each light sensor and a control current control signal input to a linear current regulator per color based on the respective detection results.