Lighting device

A lighting device comprising:

• a plurality of first light sources each comprising a first emitter including a first light surface, each first light source being configured to emit a visible light emitted from the first emitter;
• a second light source comprising a second emitter including a second light surface, the second emitter being configured to emit light comprising a wavelength for sterilization through the second light surface;
• a housing including a bottom, on which at least one of the first emitters and the second emitter are disposed;
• and
• a cover coupled to the housing to define a region enclosing at least one of:
• the plurality of first light sources or the second light source,
• wherein at least one first emitter comprises a wavelength converter to emit white light,
• wherein light emitted from the second emitter is configured to inactivate at least one of Staphylococcus aureus, Salmonella Weltevreden, S. Typhumurium, Enterococcus faecalis, Bacillus cereus, Pseudomonas aeruginosa, Vibrio parahaemolyticus, Listeria monocytogenes, Yersinia enterocolitica, Clostridium perfringens, Clostridium botulinum, Campylobacter jejuni, or Enterobacter sakazakii,
• wherein each of the first light surface and the second light surface is disposed at a different elevation from the bottom of the housing, and
• wherein an interval between the second emitter and one of the first light emitters adjacent to the second emitter is different from an interval between adjacent first light emitters along a longitudinal direction of the housing.

A lighting device comprising:

• a first emitter disposed on a first substrate and configured to emit a first light through a first light surface;
• a second emitter disposed on a second substrate and configured to emit a second light including a different peak wavelength from the first light through a second light surface;
• and
• a housing comprising a bottom, on which the first and second emitters are disposed;
• wherein the first emitter comprises a wavelength converter to emit white light,
• wherein each of the first light surface and the second light surface is disposed at a different elevation from the bottom of the housing, and
• wherein the first emitter is adjacent to the second emitter, and wherein an interval between the second emitter and the first emitter is different from an interval between the first emitter and another adjacent first emitter along a longitudinal direction of the housing.