LED lights for underwater use

摘要

A lighting unit (2) for marine or other underwater use has an array of LEDs (60, 62) mounted in groups (46) on a printed circuit board (6). A plastic injection moulded collimator is associated with a group of LEDs and a group of such collimators are provided in a single contiguous moulding which can also provide a cover (20) and means for mounting the lighting unit to a vessel and facilitates sealing of the unit.