US Patent 10907787 Light engine and method of simulating a flame

A system and method for lighting effects, including simulating a flame, a spark, or a perpetual middle, is disclosed. One or multiple three dimensional substrates include one or multiple arrays of light sources, such as LED, mounted on or into them. A control circuit can actuate the light sources in a manner to simulate different light effects including rising and contracting sparks within a flame and a center of the flame whose properties adjust to sparks traveling through and above it. The control circuit can further actuate the light sources to simulate a real flame effect by combing a simulated spark and a simulated perpetual middle. This system can include a light engine in a light fixture such as an architectural fixture.