Lens-Tech: boosting visibility with Hi Vue Fresnel range
Visibility specialist Lens-Tech has highlighted the safety and affordability benefits of its Hi Vue Fresnel lens products, designed to combat driver blind spots.
Low-entry cabs, retrofitted glass doors and camera systems often crop up in conversations about rendering trucks safer around pedestrians and cyclists, says Lens-Tech; but these can be expensive, and while major operators with a heavy urban presence and serious buying power may be in a position, or even obliged, to consider such measures, that won’t be the case across the board, particularly for smaller firms that just occasionally venture in and out of larger city centres.
Lens-Tech’s Hi Vue range can help such fleets protect vulnerable road users without incurring unsustainable costs, the company says.
Fresnel lenses are made up of a series of concentric rings, which create a short focal length. They have plenty of applications – lighthouses and searchlights among them – but the one in question is a 21x12cm piece of PVC or acrylic, depending on the model, which sticks to a truck’s passenger side window and provides an extra 30 degrees downward or sideways view into the mirror blind spot areas.
“They are an at-a-glance device,” said Lens-Tech’s CEO, Les Haigh.
“If a cyclist or a pedestrian were moving through [its field of vision] you wouldn’t see them in your nearside window glass, but you will see them through the lens. It just gives a little more time for the driver to spot someone.”
He contends that they can offer a more instinctive means of vision than a camera system playing through a monitor.
“It’s a lot for the driver to be moving his eyes not only across the road, but also then to a monitor within the cab – it’s not a natural thing,” Les continued.
“It’s more intuitive to look through the windscreen and to the left and the right through the windows.”
The lenses have the thumbs-up from the UK’s Transport Research Laboratory (TRL) and others, says Lens-Tech, and have been handed out to overseas drivers in left-hand drive trucks by National Highways in order to seriously reduce motorway ‘side-swipe’ accidents – while their US ‘Peeper window’ version is also fitted to every vehicle that rolls off Daimler Truck North America’s production line.
Discounts are available for those ordering 10 or more units. Acrylic versions, said to produce a clearer image, are also available.
