Investigation of a controllable hybrid illuminator for use in photosynthesis

Abstract

This study concerns a hybrid illumination device that applied lighting by sunlight, natural light, and light emitting diode (LED), artificial light. The device may provide natural light to all places needing sunlight by effectively using lighting and induction instruments at daytime and supply illumination using LED, an artificial light source, at nighttime. In addition, LED illumination may replace natural light in areas where natural light is hard to reach during daytime. This study examines a hybrid illumination device that may control intensity of illumination both at daytime and at nighttime. Sunlight varies by season; It has diversity according to changes in weather and in altitude of the sun. Therefore, the device may be used as constant, natural indoor illumination by controlling the intensity of illumination with LED lighting, assistant illumination, during daytime and major illumination during nighttime. This technology may utilize massive amounts of new and renewable
energies radiated to the earth, may efficiently save energies used for existing illumination devices, and is eco-friendly. Such hybrid
illuminator may be applied to a diversity of structures for growth of plants and animals that need light and for energy saving. The artificial light source part was made possible to adjust mol of photons at a range between 0 and 100%, thereby being able to grow various kinds of plants using mol of photons needed for their photosynthesis.