Patent ID: 8591079

Claim:
An LED ceiling lamp comprising: a primary illumination unit configured for illuminating; and at least one subsidiary illumination unit; wherein the primary illumination comprises a base and a connecting member fixed to the base, a first circuit board with an LED unit thereon mounted on an opposite side of the base to the connecting member; each of the at least one subsidiary illumination unit is fixed to the base and faces the connecting member, and comprises a second circuit board with an LED unit, a lens and a reflector; the lens covers the second circuit board, the second circuit board and the lens are received in the reflector, the lens is a polyhedron prism and the lens defines an indentation at the end of the lens away from the circuit board, the indentation is formed with a plurality of inclined reflecting surfaces which are different in shapes and curves, the reflecting surface is configured for totally reflecting the light beams from the LED unit of the second circuit board with incident angle within a preset range from the LED units to the light emitting surface; the lens also includes a number of light emitting surfaces for focusing the light beams reflected by the reflecting surfaces, thereby the lens dividing the light beams into several light groups and an aphotic area is formed between each two adjacent light groups, the reflector is configured for reflecting the several light groups to a ceiling.