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Frequently Asked Questions

Display Lighting

Display Lighting Ltd has just celebrated its 16th Anniversary, during that time we have manufactured and supplied lighting products for every conceivable retail, museum and exhibition lighting application to suit all budgets. Our team have vast experience in ensuring that the product you receive incorporates the very latest technology, is the highest quality and is functional yet cost effective. This is a specialist area, inexperience can cost you dearly. Display Lighting know the display industry inside out, so we know what can be done and what’s what.


  1. Choose “dimmable” lamps but be aware that this in itself is not a guarantee of a good dimming performance. However, it is a good starting point.
  2. Stick to brand names that you can have confidence in and don’t be tempted to make false economies.
  3. Read the label and select the dimmable lamps with the highest maximum lumen output.
  4. Manufacturers want customers to experience the full potential
  5. DO Choose a Dimmer Designed for LED Lighting
  6. Dedicated LED dimmers are equipped to exploit an LED lamp’s full dimming potential, better replicating the dimming behaviour of an incandescent lamp.
  7. DON’T Buy Your Lights Without First Selecting A Dimmer
  8. Read the instruction leaflet or risk missing out on features and benefits.  

Lighting Terminology

Beam Angle

It is the angular dimension of the cone of light from reflectorized lamps encompassing the central part of the beam out to the angle where the intensity is 50% of maximum.


A bulb is normally referred to a lamp. It refers to the outer glass bulb containing the light source.


The measure of luminous intensity of a source in a given direction. A light source has different intensities depending upon the direction considered.

Correlated Colour Temperature (CCT)

A specification of the colour appearance of a lamp relating its colour to that of a reference source heated to a particular temperature, measured in degrees Kelvin (K).


A very small square of semic conduction material. Also known as a “die”, it is the “active” light-emitting component of an LED.<

Carbon Trust Interest Free Energy Efficiency Loan Scheme

The Carbon Trust is undergoing a general process improvement to the Interest Free Energy Effiicency Loan Scheme, with effect from Friday 6th June 2014, to the functionality for equipment suppliers to start an application on behalf of their customers for a Carbon Trust interest free energy efficiency loan.

To initiate and complete your own applications please see the guides by following this link. Display Lighting Ltd can provide you with a quotation that meets the Carbon Trust requirements and a completed Energy Saving Assessment template.

If you have any queries, or require assistance, please contact the Loans Team on 028 9073 4398, or by email at

What is colour temperature?

The color temperature of a light source is the temperature of an ideal black body radiator that radiates light of comparable hue to that of the light source. Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing, astrophysics, horticulture, and other fields. In practice, color temperature is only meaningful for light sources that do in fact correspond somewhat closely to the radiation of some black body, i.e. those on a line from reddish/orange via yellow and more or less white to blueish white; it does not make sense to speak of the color temperature of e.g. a green or a purple light. Color temperature is conventionally stated in the unit of absolute temperature, the kelvin, having the unit symbol K.

Color temperatures over 5,000K are called cool colors (bluish white), while lower color temperatures (2,700–3,000 K) are called warm colors (yellowish white through red

What does Ra or CRI mean?

Color rendering, expressed as a rating from 0 to 100 on the Color Rendering Index (CRI), describes how a light source makes the color of an object appear to human eyes and how well subtle variations in color shades are revealed. The higher the CRI rating is, the better its color rendering ability. When the CRI rating is 0, all you can see is grayscale.

How do I place an order for Display Lighting products?

Paul Breedon, the managing director at Display Lighting is passionate about giving customers first class service and believes that a "wish list" is the most effective way of ensuring customer enquiries are dealt with in the most effective way. The "wish list" enables our team of lighting experts to offer the most competitive prices and also to give the very best advice on choosing the right product for the job.

A wish list can only be created and submitted to one of our sales team once we have received completed registration details. Once a wish list has been compiled, simply click the "submit wish list" button and your enquiry is emailed to the first available member of our sales team, a competitive quotation is then emailed to you within 24 hours (Mon to Fri only).

If you would like to proceed with an order please confirm by email or by telephone. Proforma invoices can be paid by Visa, Mastercard or by BACS transfer.

Why do I need to register?

To benefit from the full functionality of the website you will need to register your details with us. This will allow you to obtain more detailed specifications about Display Lighting products and allow you to create wish lists that can be converted into quotations as described above. Display Lighting will send regular updates on new developments about upcoming product launches and events to people who register their interest. 

How do I use the new Display Lighting website?


The new website has been designed to take the headaches out of creating lighting specifications. The team at Display Lighting have spent the best part of a year updating information about each product and presenting it in such a way that is concise and simple to compile. Bespoke products, such as; Spectrum, Tubelight, Quantum and DisplayLED, can be constructed in such a way that the end result will be an exact fit for your retail, exhibition or museum display. The first step is to register your details and your interest by completing a simple form, once it has been submitted you can begin to compile your wish list. Below the details of each luminaire you can find associated and compatible products that Display Lighting would recommend for use with that fitting such as lamps, transformers, LED drivers and lamp accessories.

What is DisplayLED?

DisplayLED is a very slim, circular aluminium profile (diameter 15mm) that is available with multiple fixing options that allow horizontal or vertical fixing with beam angle adjustment. DisplayLED incorporates a built in very high density SMD LED strip for uniform illumination with 120 high bright LEDs (10W per metre). Each LED outputs 4000mcd. The design consists of an easy to clean dustproof OPAL acrylic diffuser that is available with different opacities and the whole system operates from a 24V DC power supply. The luminaires can be supplied with either cool white, neutral white or warm white LEDs emitting a 60 degree beam. It can be manufactured up to 2000mm in length.

What are LED strips?

LED "strips" can be supplied in either rigid or flexible versions, the latter tending to be the most popular choice recently due to the ease of installation and reliability. A rigid LED strip is a long thin printed circuit board that is populated with a number of LEDs, they are normaly offered in 300mm lengths that can be plugged together end to end to form a constant line of illumination. A flexible LED strip is a flexible PCB ribbon, again, that has differing quantities of LEDs mounted equidistant along its length but the ribbon strips are generally supplied in reels of up to 5m making them much more cost effective.

Why use retrofit LED lamps?

LED lamps are the perfect lighting solution for jewellery, china watches and diamond displays particularly within showcases and display cabinets. All LED lamps generate heat (there is no light source that does not produce heat) but when compared to using 12V dichroic reflector lamps the reduction in heat emitted is dramatic making them the perfect solution for lighting systems installed into display cases and counters to keep the ambient temperature to an absolute minimum.

What are retrofit LED lamps?

The “new” generation of retrofit LED lamps have been available for approximately 24 months and have proven to be both reliable and viable replacements for either MR16 G5.3 12V or PAR16 GU10 240V halogen reflector lamps due to their long life and low heat emissions (compared to halogen reflector lamps). The manufacturers state that when operated correctly the average life can be over 30,000 hours. The beauty of using “retrofit” lamps is that they offer a superb light output at a much reduced energy consumption and can be replaced at the end of their life.

As "a rule of thumb" please see the comparisons below between halogen and LED lamps:

3W high power LED lamp = 20W halogen

5W high power LED lamp = 35W halogen

6W/7W high power LED lamp = 50W halogen

10W high power LED lamp = 75W halogen

What is Track Lighting?

A lighting “Track” is a term used by the lighting industry to best describe a metal (or sometimes plastic) extrusion. The extrusion houses two copper conductive strips that are designed to carry 12V positive + and negative – currents along its length. 12V Tracks are available in varying shapes and sizes and are generally manufactured in 1m or 2m lengths. The beauty of installing a lighting "track" is that the spotlights clip into or around the extrusion and can be repositioned easily in line with changing displays and merchandising.

Why use Track Lighting?

The 12V spotlights that are designed to fit into or clip around the 12V Tracks are generally very easy to move along the length of the track usually requiring only the loosening of a thumb screw or quarter turn of a locking nut. For this reason track lighting offers a great deal of flexibility and is an excellent system for use within applications that are constantly changing.

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