Rob Satink: "Why LED lighting cannot do without photonics"

Rob Satink, photonics specialist bij Acal BFi NederlandSee the light – Acal BFi Photonics specialist Rob Satink explains how you generate better light output with holographic diffusers

Rob, you are a physicist. How do you see the development of LED technology has moved on over the past 30 to 40 years?

“Since the development of the LED in 1962, it is inspiring to see that technology which was once not used widely, is now all around us; not just in lighting, but also in various applications and high-tech solutions. I am a strong supporter of the initiatives to reduce the carbon footprint of our society and specifically from professional environments. That is why I hope that the application of LED technology continues to lead the way in sustainable new technology and make it an attractive option for business leaders.”

How do you see specialty photonics solutions combined with LED output?

“The way people perceive and interact with light is hugely important. All of these elements need to be thought through when designers are thinking about LED solutions and applications. I am passionate about photonics solutions and working with latest industry technology and with the designers, to create, manipulate, and measure light. All this, to enable a positive sense of wellbeing and happiness which light can bring us.”

Are there other tools to get more light output from LED lighting?

“Absolutely! The research into more efficient LED lighting is always ongoing. Over the next few years, I expect to see a lot more advanced LED lighting solutions. There is so much more to be gained from good designs, including aspects such as the power supply and temperature for optimum utilisation of the power from the LED. Lighting designers are tasked with creating the greatest light output with the lowest possible energy consumption, at the lowest cost point. So just by advancing research into these areas will help designers in the future create light in the most efficient way possible.”

Licht is voor de meeste personen vanzelfsprekend. De taak aan lichtontwerpers om de grootste lichtopbrengst te creëren met zo laag mogelijk verbruik en kosten


What is a diffuser exactly, and specifically, what is a holographic diffuser?

Lantronix helpt bedrijven om hun apparatuur aan netwerken, internet en ‘the Cloud’ te koppelen via WiFi. Waarom zouden producerende bedrijven dit overwegen?“A non-mounted diffuser can be described like a transparent sheet for an overhead projector, containing a specific angular distribution upon light transmission. The diffuser makes for the distribution of light at a pre-determined angle, both in the targeted area for the light to fall into as well as looking back at the fixture. This ensures a uniform quantity of light and the diffuser works to reduce the glare. A diffuser which has a predetermined angle works to redistribute the light beam at a particular angle, defined by means of an optical process, is a holographic diffuser.”

Why would you use a diffuser?

In most situations, we use a diffuser to reduce the glare and to let the light distribute evenly. A great example of this is the Eiffel Tower in Paris at night. The Eiffel Tower needs to be lit, but the environmental impact needs to be at a minimum. Using a diffuser, light is focused at suitable, predetermined angles. By selecting the correct diffusers, the Eiffel Tower is beautifully lit up, and the area surrounding the landmark is not impacted too much by the illumination of the Tower. 

Do you have any tips for adding a holographic diffuser to a LED lighting design?

Start with the target area that you want your lighting to illuminate. This will give you a good starting point to determine factual parameters of your fixture.

In general terms, it’s usually not a problem if you want to insert a diffuser or holographic diffuser into your lighting design, take into consideration that the holographic diffuser is a tertiary optic for the LED. By thinking about the target area which you want your fixture to illuminate from the start of your design, you’ll be able to reduce your costs by looking at the benefits of a diffuser to a lighting design.

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