We developed the Hybrid Electrode Fluorescent Lamp (HEFL) by improving the backlight used in large screen LCD TVs and are now developing plant growth lighting systems based on this lighting technology.

The features of this lighting technology are as follows:

1. The thinner lighting unit enables the number of shelves in a multi-shelf cultivation system to be increased.
   (Up to 8 shelves can be set in a 2.7-meter system when a liquid fertilizer tank is installed at the bottom and the height of the plants is 22 cm at a maximum.)
2. With a specially designed reflector to direct light vertically downward, strong light, 200 to 250 PPF*, can be provided to plants with less energy. We have also produced a customized unit that provides 220-wat light of 450 PPF from light sources 30 cm away.
   (In comparison with our conventional products, the unit gives 30% brighter light with 23% less energy.)
3. Light is distributed evenly to plants, and the positions of the proximal light sources are adjusted to the height of the plants as they grow in a multi-shelf cultivation system.
   As the surface temperature of the lamps is relatively low, the system reduces waste heat and the cost of electricity for air conditioning.
4. The life of the tubes is as long as 40,000 hours, which leads to reduction of the maintenance cost for the lighting unit.
5. Tubes are available in sizes ranging from 450 mm to 1,200 mm and can meet various demands for different levels of light quantity and designs.
6. Different wavelengths necessary for plant growth (blue, red, white, ultraviolet, for infrared etc.) are available for a wide range of research activities.
   HEFLs are replaceable. Please consult us about customized specifications and wavelengths.

Ref :

* PPF: Photosynthetic Photon Flux
In general, leaf vegetables and fruits need 150 and 300 PPF of light for growth, respectively.

	Basic model				Growth chamber
	8lamps	12lamps	14lamps	20lamps	10lamps
Size	700mm×900mm　T:57mm		750mm×900mm　T:57mm		450mm×450mm　T:50mm
Lamp spec.	852mm　φ3.4/4mn				420mm　φ3.4/4mn
Power consumption	70～90W	110～115W	120～160W	175～225W	60W
Voltage	100～240V				100V(W)(AC adpt）

• Standard equipment・・・Parabolic-shaped reflector to deliver light vertically downward
• Light weight・・・8lamps：7kg　12lamps：8kg
• Option・・・Dimmer(Adjustable 30-100%)
• Tubes can be replaced

In the cultivation of plants, it is believed that the blue wavelength helps leaves and stalks grow in a normal shape and that the red wavelength promotes photosynthesis.
The HEFL offers a range of wavelengths necessary for cultivation of plants.

2.Efficient and energy-saving HEFL lighting system delivering light vertically downward

With specially designed reflectors, this system can deliver strong light (200 to 250 PPF) to the plants under the lamps.
The lamps emit less heat, which is helpful for plant growth.

3.Cultivation without using agrichemicals

Plants are cultivated in a hygienic room isolated from the outside world. The soil-free hydroponic system requires no agrichemicals. There is, therefore, no potential for soil pollution or contamination with external agrichemicals.

4.Scheduled production for stable supply

Cultivation of plants in a hygienic room realizes stable production and is unaffected by external factors such as weather conditions. It is also possible to improve the nutrition of vegetables through management of the cultivation environment and application of liquid fertilizers.