An illuminator includes a primary power supply and a secondary supply. The first power supply includes a primary wire. The secondary power supply includes two energy-recycling units each comprising a magnetically conductive annular core made of iron powder and a secondary wire wound around the magnetically conductive annular core. The primary wire is wound around the energy-recycling units. A first illumination unit is connected to the primary wire. A second illumination unit is connected to the secondary wires. A first pulse modulator is connected to the primary wire and the first illumination unit. A second pulse modulator is connected to the primary wire and the second illumination unit. An oscillator is connected to the primary wire and the first pulse modulator.