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LED LIGHTING TECHNOLOGY IN PLANT GROWTH

PART III: Light Quality

Compared with the factor of LED viewing angle we discussed last time, our topic today–light quality is a more significant index in terms of which LEDs have a revolutionary advantage over conventional light sources. The emergence and growth of LED technology has stimulated the development of modern agriculture and resulted in many new forms of agriculture, such as vertical farming.  

Biologically, plants can perceive light within certain range of wavelength, just as the human eye does. The luminosity function is used to describe the human eye’s sensitivity to lights of different wavelengths. Plants also have their own...

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LED LIGHTING TECHNOLOGY IN PLANT GROWTH

Part II: Viewing Angle

In our last post, we talked about the significance of lighting for pant growth in terms of light intensity, photoperiodism and light quality. In plant growth, light intensity is expressed as photosynthetic photon flux density (PPFD). It depends on both the optical design of the fixture and the number of photons emitted by the light source.


So what are the advantages of LEDs over conventional lights in providing sufficient light intensity for plant growth?


Let’s suppose there is a plant growth environment, where the plant is growing in...

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LED LIGHTING TECHNOLOGY IN PLANT GROWTH

Part I: Background

Light, just like water, soil, temperature and air, is indispensable for plant growth. Man had realized the importance of water, soil and temperature in growing plants since a long time ago, and had begun to utilize irrigation, fertilization, and greenhouse technologies to artificially alter the conditions and environment for the plants. As a result, the yield was successfully improved. However, we’ve always had little knowledge of lighting and its influence on plant growth.
Man used to believe that plants could obtain all the necessary nutrition from the soil until the year 1880, when American scientist G....

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GILE 2017 REVIEW: WHAT HAPPENED TO LIGHT QUALITY?

 

Starting from June 9th 2017, the 22th Guangzhou International Lighting Exhibition 2017 (GILE 2017) held at China Import and Export Fair Complex gathered over 2,000 exhibitors from 30 countries. Within 18 halls and over 2000 booths, extensive knowledge, up-to-date applications and cutting-edge technologies of LED lighting were presented to all visitors, no matter professionals in the industry or just fans of LED lighting.

YUJI visited GILE 2017, for a glance at the latest applications of LED light sources and update of our peer manufactures. Here is...

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Revolutionary Tunable-White LED: Yuji Spectrum-X Series

Technology develops because of human needs, and it raises new needs of human. Because of our desire for brightness and fear of darkness, artificial lights came along. Due to limitation of technologies, the original pursuit of artificial lights was illumination. Nowadays, however, as lighting technologies (especially LED lighting technologies) bloom, artificial lights are not just about illumination anymore, they are more about atmosphere, experience, and lifestyle.

Compared to conventional technologies, LED lighting excels in energy efficiency, color customizability, and space for optical design. It can easily create any types of atmosphere, whether it is bright and colorful, or warm and...

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