Support / Design

All products have been tested and are designed to meet the following standards.

Safety Standards

EN 60598-2-5 : 1998 Luminaires For Road and Street Lighting

EN 60598-1A1 :2006 General Tests For Luminaires

EN 60825-A1 : 2002 Laser Safety Standards

Laser Class : 1

Protection Class : ll

IP65

EMC Standards

EN 55015: 2006 RF Disturbance From Electrical Lighting

EN 61547/A1: 2000 EMC Immunity General Lighting

EN 6100-3-2 :2006 Harmonic Current Standard

EN 6100-3-3/A2 :2005 Voltage Fluctuation and Flicker

The LED lighting revolution

offer a multitude of possibilities.

Advantages include

Very long life span.

Design,architecture,lighting choices,

Mixing of colour using (RGB mixture)

LED have no UV or IR radiation in their spectrum

LED have high functional safety. Low Voltage.

LED are durable against impact and vibration

Focused light of high intensity can be produced

High intensity good visibility.

Low operational temperatures(hand touchable).

Advantages to the Environment

Low energy use for colours

Longer life means there are fewer lamps to disposed of

If they fail,can be repair and put back into service.

Light pollution very low

No glare from LED Metal Halide Lamp

controlled colour High colour temperature

temperature high glare

The picture compares, LED street lighting colour temperature

with Sodium street lighting colour temperature

Night Time conditions on Vision

According to some experts,the energy efficiency benefits of LED outdoor lights cannot be determined simply by comparing efficacy, the energy efficiency measure for lamps

Studies comparing the perceived brightness of LED sources and sodium lamps at night have shown that LED's can achieve the same level of perceived brightness with a low lumen output

than sodium lamps. This affect could be explained by the eye response to light in outdoor " night time" conditions.

Photopic vs. Scotopic Vision

Light,measured in lumens,is defined according to the visual sensation it produces in "daytime" conditions. However the visibility of light varies with external conditions. During"daytime or indoor lighting conditions,where there is a high level of ambient light,the eye uses its cone sensors to perceived light.

This type of vision is referred to as photopic (photon-rich) vision.

During" night time" conditions, where there is a low level of ambient light, the eye uses its rod sensors to perceived light.

This type of vision is referred to as scotopic (scarcity of photons) vision.

The rods have a different colour response than the cones in the eye as shown in the photopic and scotopic curvesV-λ.Under outdoor lighting at night, eye operates in an intermediate range, called mesopic vision, using both rods and cones.

The benefits of LED lighting and energy saving could possibly be greater if the visible light output of light sources under outdoor lighting conditions were taken into account.

Assuming equal quantities of "daytime" lumens produced,light sources rich in blue light, such as LEDs or metal halide lamps produce more visable lumens at night than light sources rich in yellow light such high or low pressure sodium lamps.

The paradox

The commercial applicability of these additional energy savings using LEDs is limited until regulatory bodies and the lighting industry specifications and design requirements take the efficacy of light sources under night time conditions into account.As to date the international lighting society do not accept scotopically enhanced design as a industry-recognized standard of practice.

When the market wakes up to opportunity to support the Climate Change Challenge the benefits will be received by all of man kind.

Custom Design or Modified Power