Lighting for Indoor Sport

Sports lighting, where flicker free output, good vertical illuminanace, good colour rendering, the ability to dim and rapid re-start in the event of a power outage, are features that could see ionLUX™ dominate this sector.

Flicker free output

Flicker is defined as 'the impression of unsteadiness of visual sensation induced by a light stimulusis'. Put simply, the fading and brightening of a light source at any given rate.

Ceravision's flicker free lighting is achieved through the unique way that ionLUX™ luminaires are powered using a magnetron at a frequency of 2.45 GHz . The RF energy generated by the magnetron is used to energise the noble gas and metal halides within the lamp to a point where a plasma is formed and light is emitted.

The fade / brighten cycle in the ionLUX™ product range occurs 2,450,000,000 times per second. This means that the flicker that occurs is way beyond the upper limit of 5.4 kHz mooted as having no biological effects on the human body, and way beyond any frequency likely to cause 'strobing' in filmmaking, even in high speed cameras used for slow motion where recordings can occur at 250,000 frames per second.

Good Vertical Illuminance

Vertical Illuminace is the amount of light falling on a vertical surface or plane, this is particularly important in a sports environment where objects move at speed. ionCORE with its small, single point source lamp, has enabled us to design an efficient reflector which distributes light along vertical surfaces whilst also maintaining high horizontal illuminance.

Good Colour Rendering

The Color Rendering Index (CRI) is a measure of the ability of a light source to reproduce the colors of objects being lit by the source. 

The best possible rendition of colors is specified by a CRI of 100, while the very poorest rendition is specified by a CRI of 0. To put this in perspective, typically, light from the Sun has a CRI of 100, while the common 'orange looking' High Pressure Sodium street lights have a CRI of 25.

ionLUX™ luminaires have a CRI of 80+. This means that objects colours are shown truly and naturally. When a snooker table is green, it looks green and when a football players shirt is red, it looks red.

Fully Dimmable

The ionLUX™ product range is fully dimmable from 100% to 50% of power output in 1% incremements. Not only does this allow the user to alter the light output in any given area, it also provides energy savings. See also ionCOM™/ ionSMART™.

Rapid Re-start

However uncommon power outages may be, they are a fact of life. In the event of a power outage, ionLUX™ luminaires will cool sufficiently within a 4 minute period to enable an automatic restart, this system is built in to the luminaire firmware and happens without user intervention.

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Further Information

Future Applications

Energy efficiency is a global driver within many markets and Ceravision’s core technology has the ability to address these markets. Due to the flexible nature of the technology we are able to facilitate a variety of power levels (400 W to 5 kW) and spectra ranging from visible to UV light.


Ceravision’s High Efficiency Plasma (HEP) light is particularly suited to medium and high power applications. The light is emitted from a very small source, which enables Ceravision to accurately focus and distribute the light. This in turn facilitates significantly greater optical performance.

Intellectual Property

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

Featured News

The testing of Ceravision’s High Efficiency Plasma (HEP) lamps in Rothamsted has been underway now for four months. The testing compares Ceravision’s HEP lamps with legacy metal halide lamps and new LED systems and their impact upon the growth of wheat.


Ceravision are delighted to announce the much anticipated debut of ionGROW, the world's first High Efficiency Plasma grow light, at the upcoming infoAgro exhibition taking place from the 10th - 12th May in Almeria, Spain.


Ceravision's Horticultural Growth Light Solution ionGROW™ is set to begin trials at Rothamsted Research.