A horticulture LED is a semiconductor emitter that produces light absorbed by plant photoreceptors to maximize growth, manipulate morphology, improve quality, and/or precisely control growing cycles of plants. The LED emits in the spectral range of electromagnetic radiation from 400 to 700 nm in wavelength, which is designated as photosynthetically active radiation (PAR), to drive the photochemical process of photosynthesis in plants. The photons emitted by a horticulture LED may also be designed trigger a signal transduction pathway that influences plant development or production of secondary metabolites. Signal-transducing photoreceptors respond to light within or beyond the photosynthetically active range of wavelengths, including also ultraviolet (UV) and far-red regions. A horticulture LED can be a narrow band emitter designed to emit monochromatic light that targets the absorption spectrum of a specific photoreceptor. It can also be a broad-spectrum light source that produces electromagnetic radiation in a broad range of wavelengths to activate a group of photoreceptors.
at the Open Lighting Product Directory (OLPD)
