PHOTOSYNTHESIS INHIBITING LIGHT SOURCE AND ILLUMINATING DEVICE USING THE SAME

摘要

Disclosed is a photosynthesis inhibiting light source emitting generally white light, which does not have adverse effects on the human body, while inhibiting/suppressing growth or breeding of photosynthetic organisms. Specifically disclosed is a photosynthesis inhibiting light source characterized by comprising a semiconductor layer emitting near-ultraviolet light, and at least one phosphor which emits light when excited by the near-ultraviolet light. This photosynthesis inhibiting light source is also characterized in that the near-ultraviolet light includes ultraviolet light having an emission band within the wavelength range of 300-380 nm and violet light having an emission band within the wavelength range of 380-400 nm, and the at least one phosphor does not include a combination of a phosphor emitting blue light having an emission peak at a wavelength of 430-490 nm and a phosphor emitting red light having an emission peak at a wavelength of 640-680 nm. The photosynthesis inhibiting light source is further characterized in that the light mixture of the near-ultraviolet light and the light emitted by the at least one phosphor is generally white.