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Light Coverage & The Effect of Mesopic Lumens

Light Coverage & The Effect of Mesopic Lumens

This presentation explains the different types of light produced by common lighting towers and how Ecolite can reduce costs and provide a more effective light source.

The various options available concerning light coverage can have a huge impact on the quality of light whether indoors or out.

Prismatic lenses & lighting technology are discussed along with fundamental health and safety differences between the Ecolite and 1,000W MH lighting towers

Photopic, Scotopic & Mesopic Light

Photopic: Vision under well-lit conditions, which provides full colour perception, and which functions primarily due to cone cells in the eye.

Scotopic: Monochromatic (black and white) vision in very low light, which functions primarily due to rod cells in the eye.

Mesopic: A combination of Photopic and Scotopic in low lighting, which functions due to a combination of rod and cone cells in the eye.

Lighting At Work – HSG38

‘Lighting At Work’ provides guidance for recommended lighting levels in various workplace scenarios.

The HSE last updated their recommendations 15 years ago.

These recommendations are provided in the form of LUX levels (a measurement of photopic light) and needs to be updated by the HSE.

HSG38 doesn’t take into account Mesopic lighting which wasn’t commonly available during its most recent update.

Measuring the Ecolite in standard LUX levels does not accurately reflect the visibility of light produced as this reflects daylight-adapted photopic vision only (1000 – 100 000 lux).

HSG38 doesn’t take into account Mesopic Lighting

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Photopic Vs Mesopic of Ecolite

Photopic light measurement Actual light output (Mesopic)

0 1 5 10 20 30 40 50 60

Photopic light measurement doesn’t provide a true representation of the Ecolite’s performance unlike that of the Mesopic measurement.

Calculating Mesopic Light

An Ecolite uses 150 watt lamps of which each produce 14,500 Photopic Lumens

To understand the coverage of an Ecolite, photopic light must be multiplied by 1.8 to account for the additional scotopic light that is produced. This is known as the S/P Ratio.

Photopic (14,500)

Scotopic (1.8)

Mesopic (26,100)

Mesopic Light Footprint & Unique Qualities of Ecolite

Mesopic light increases visibility and light with less glare.

The Ecolite will replace a 4 x 1,000W metal halide lighting tower in nearly all scenarios!

Unique Coverage and Pattern of Ecolite

It significantly outperforms all 4 x 400W & 150W MH in all scenarios.

Ecolite PerformanceThe effect of a single Ecolite Lighting Tower!

Patented Prismatic Lenses

95% of light is refracted through the prismatic lens into a known pattern.

“Hot spots” and fade out areas are eliminated, allowing the operator to illuminate a very specific area with ease whilst reducing light pollution.

As an equal amount of light is refracted through each individual prism, light arrives at the same destination whilst travelling from multiple angles significantly reducing shadows.

As large, dark shadows are not cast across the illuminated area, overall visibility is improved and the need to reposition lights reduced.

Colour Rendition Index

Colour Rendition Index is a quantitative measure of the ability of a light source to reproduce the colours of various objects faithfully in comparison with an ideal or natural light source.

Ecolite produces a CRI rating of 96/100, where as traditional Metal Halide has a rating of around 64/100.

Ecolite provides the best colour rendering of any lighting tower on the market.

1,000W MHEcolite

Health & Safety

There are several lighting hazards in the workplace which can affect the health and safety of people. Typical risks from

lighting originate from

-Lighting At Work HSG38

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1,000W MH Are Hazardous for Health & Safety

Glare happens where vision is not directly impaired but there is discomfort, annoyance, irritability or distraction the condition is called discomfort glare. The latter is related to symptoms of visual fatigue. Both types of glare can arise from the same source.

A surface lit by different artificial light sources, or by daylight under changing sky conditions, may appear to vary in colour. Where colour discrimination is required (as for some electrical work) this can affect safety.

The eye is particularly sensitive to flicker and it is especially detectable at the edges of the visual system’s field of view. Flicker can, depending on individual sensitivity, be a source of both discomfort and fatigue. It may even cause epileptic seizures in some people.

Some lamp designs also produce significant emissions at infrared and ultraviolet wavelengths, both of which are invisible . These can cause significant disruption to nocturnal wildlife such as bats.

Ecolite: Health & Safety

Prismatic lens and fewer photopic lumens reduces glare. Limited Glare Rating (LGR) down to 15 is achievable

Colour rendition of 96/100 compared to >64/100 for 1,000W metal halide

Combination of electronic ballast and CDM light source prevents any flicker.

UV blocked to prevent light pollution

4 x 1,000W MH Vs. Ecolite Glare Comparison

4 x 1,000W GlareEcolite reduces glare & improves

visibility

We are happy to prove this with night time demonstrations against any other machine on the market.

Money Saving

Model Fuel Consumption (litres per hour)

Running Cost of 1,500 hours (1 year) @ 80p per litre

4 x 1,000W MH 1.93 £2,316

4 x 400W MH 0.86 £1,032

Ecolite 0.5 £600

Ecolite is here to save you money!

Available Optical Systems

03 (3° omnidirectional)13 (15°x30° rectangular)36 (30°x60° rectangular)69 /F (60°x90° rectangular)411F (40°x110° rectangular)314 /F (35°x140° rectangular)315 /F (35°x155° rectangular)

Available lens patterns for Ecolite

Contact Us

Contact Ross Dryden for more information on Ecolite!

Tel: 01621 745 747Mobile: 07712 135 842

Email: rdryden@youngmangroup.com