Patent ID: 8405105

Claim:
A light emitting device, comprising: a carrier; at least one light emitting element disposed on the carrier and electrically connected to the carrier; a transparent plate disposed on the carrier, the transparent plate comprising: a flat-portion having an upper surface and a lower surface opposite to the upper surface, and the lower surface closed to the carrier; and at least one lens-portion covering the light emitting element; and a light shielding side wall structure disposed on the upper surface of the flat-portion and surrounding the lens-portion; wherein the lens-portion has a light incident surface, a light emitting surface, a first side surface, and a second side surface, the light emitting surface being opposite to the light incident surface, the first side surface and the second side surface connecting the upper surface and the light emitting surface, the light emitting element is adapted to emit a beam, a first partial beam of the beam passes through the light incident surface and emerges from the light emitting surface, a second partial beam of the beam passes through the light incident surface and is transmitted to the first side surface or the second side surface, the first side surface or the second side surface reflects at least one part of the second partial beam of the beam, and the part of the second partial beam emerges from the light emitting surface, the light shielding side wall structure is adapted to reflect a part of the beam, and first side surface and the second side surface are respectively a flat surface and a curved surface.