Patent attributes
A light string can include a power cord adapted to electrically connect to an external power source, and a plurality of light bulbs electrically connected to the power cord in series. At least one of the light bulbs can include: a lamp base defining a first inner surface, and having a first beam-splitter formed on the first inner surface; a circuit board mounted in the lamp base, the circuit board electrically connected to the power cord; a plurality of light-emitting diode (LED) units electrically mounted on the circuit board; a light shade capping the lamp base, the light shade defining a second inner surface and having a second beam-splitter formed on the second inner surface, wherein the first beam-splitter and second beam-splitter are contiguous; and a refractive lens mounted in the lamp base between the LED units and the first beam splitter.
