prototype development of a plant-response experimental light-source system with LEDs of six peak wavelengths
K. Fujiwara and A. Yano
Book of Abstracts.International Conference on Quality Management in Supply Chains of Ornamentals. 21-24 February, 2012. Golden Tulip Sovereign Hotel, Bangkok, Thailand.
2012
บทคัดย่อ
A prototype of a light-source system has been designed and developed to support advanced experiments for plant light-response studies. The light-source system consists of light-emitting diodes (LEDs) of six types: violet, blue, green, orange-yellow, red, and far-red (peak wavelengths: 405, 465, 530, 595, 660, and 735 nm). The light-source system can produce light with different compositions of the six wavelength ranges, and can provide photosynthetic photon flux densities (PPFDs) of 416 µmol m-2 s-1 for an area of 0.18 m2 at a distance of 175 mm below the LEDs. This PPFD is sufficient for cultivation experiments with almost all plants that might be grown under artificial light. This paper provides a technical description of the light-source system and the results of quantification tests.