Following research at Sheffield-based LED packaging firm Litecool, narrow beam angles from LED packages without secondary optics or reflectors look closer. The proof-of-concept device produced a beam ...

A laser beam can be twisted to move like a vortex There’s a new kind of twisted light. A rotating “vortex beam” whose twist changes across the length of the beam has been created in the lab ...

Seda's WAVEL series LED high bay lights unveil its unique optical design to have beam angle changeable, no need to change lens but simply rotate slide block to have three beam angles ...