Lens and LED retrofit lamp

摘要

Various embodiments may relate to a lens for a lighting assembly. The lens includes a bottom surface, a top surface and a side surface joining the bottom surface and the top surface. The bottom surface includes an incident surface, and the top surface includes an emergent surface, wherein the side surface includes a first side surface part and a second side surface part arranged in sequence in a direction from the top surface to the bottom surface, and the first side surface part and the second side surface part are defined by different curved surfaces and both are configured as reflection surfaces.

主权项

1. A lens for a lighting assembly, the lens comprising:
a bottom surface, a top surface and a side surface joining the bottom surface and the top surface, wherein the bottom surface comprises an incident surface, and the top surface comprises an emergent surface, wherein the side surface comprises a first side surface part and a second side surface part arranged in sequence in a direction from the top surface to the bottom surface, and the first side surface part and the second side surface part are defined by different curved surfaces and both are configured as reflection surfaces, wherein the first side surface part receives first incident light beams from the incident surface and reflects the same to the emergent surface to form first emergent light beams, and the second side surface part receives second incident light beams from the incident surface and reflects the same to the emergent surface to form second emergent light beams, the emergent surface receives third incident light beams from the incident surface and emerges the same directly to form third emergent light beams, the first, second and third emergent light beams jointly form scallop-shaped light distribution, wherein the second emergent light beams and the third emergent light beams form a central part of the scallop-shaped light distribution, and the first emergent light beams form edge parts at two sides of the central part of the scallop-shaped light distribution.