Plasma Grow-Lights

The UV420, a new UV grow-light delivers UV-B (280-315 nm), UV-A (315-400 nm) and blue light (400-495 nm).  This UV grow-light is designed to complement other grow-lights, particularly HPS and LED lights, for horticulture:

Tomatoes Boosted by UV from UV420 Grow-Light
  • Adds the 280 - 495 nm missing from PAR lights
  • Economically tailored to suit crops and growth cycles
  • Excellent illuminance to penetrate plant canopies
  • High lumen maintenance prolongs output
  • Small light source minimises luminaire shadowing
  • Unique spectral output influences plant physiology to boost nutritional and medical values
  • UV reduces incidences of diseases and pests
  • Provide a post-harvest boost to secondary metabolites and enhance freshness and shelf-life
  • Also to help sterilise facilities between crop cycles to reduce mould and bacteria.  

UV-B, UV-A and Blue Light Boost Crop Quality & Value

Plants have evolved over millions of years to exploit sunlight’s full spectrum to power photosynthesis for growth and to regulate developmental processes. Research now shows that the UV radiation in sunlight has several beneficial effects on the development and nutritional quality of many herbs, fruits, vegetables and ornamental crops.  UV-B and UV-A effect growth, photosynthesis, secondary plant metabolites, and the plant-insect interaction in high-value horticultural and agricultural crops.

The UV-A and UV-B wavelengths in sunlight activate a plant’s natural defence mechanisms, producing proteins that act as a “sun screen” for protection against harmful light.  These influence photomorphogenic responses including gene regulation, flavonoid biosynthesis, leaf and epidermal cell expansion, stomatal density, stress and increased photosynthetic efficiency.  This synthesis of proteins in crops improves disease resistance, colour, fragrance, taste and potency.  The more UV exposure, the more such proteins are produced. 

Medicinal Cannabis Boosted by UV from UV420 Grow-Light

When a plant detects UV-B at 288 nm, it produces the UVR8 protein.  This protein acts as a chemical ‘messenger’, which signals to the plant to secrete more oils and resins to help protect the plant and its seeds from potentially harmful UV-B.  The net result is that the UV-B boosts the production of flavonoids and terpenes - powerful compounds that dictate the flavour, aroma and colour.  

Plants grown outdoors are subject to varying amounts of UV wavelengths depending on their geographic location.  Plants grown under artificial lighting have not been exposed to UV - the UV-A and UV-B do not pass through greenhouse glass.  Traditional grow-lights provide lots of photons at the ‘red-end’ of the Photosynthetically Active Radiation (PAR) region 400 to 700 nm.  However, they lacked the high energy wavelengths from the blue-end and beyond that are essential to maximise a crop's development and yield. 

This is where the UV420 plasma grow-light shines.

Further Information

Future Applications

Delivering flexible spectral outputs, Ceravision's HEP plasma lighting offers added-value and economic solutions in horticulture grow-lighting and other commercial applications.

HEP Plasma Lighting Technology

Ceravision’s HEP plasma grow-lights, with a UV spectrum providing UV-B, UV-A and blue herald a new scientific direction for horticulture lighting.

Intellectual Property

Ceravision maintains an extensive Intellectual Property (“IP”) portfolio comprising Patents, Trade Marks and Design Rights.

Featured News

Ceravision is now a member of UV4Plants - the recently formed International Association for Plant UV Research


Ceravision delivering the first of its UV420 plasma UV-B and UV-A Grow-lights to The Greenhouse Effect


Ceravision's new UV420 plasma grow-light is shown at Autopot Summer Social 18th - 19th August 2018.