Fresnel lenses


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Fresnel lenses

(fră-nĕl)
[A. J. Fresnel, Fr. physicist 1788–1827]
A magnifying glass that distorts vision, preventing the eye from fixating. Under its influence spontaneous and gaze-specific nystagmus can be precisely evaluated.
References in periodicals archive ?
The experts at IZM have also developed Fresnel lenses for these sensors.
In this text, he covers general prisms and reflectors; polarization properties of prisms and reflectors; specialized prism types; prism and mirror system design, analysis, and fabrication; a selection of prism applications; projection displays; microprismatic arrays; and Fresnel lenses.
With thousands of European truckers travelling along the A55 to Ireland road chiefs will now dish out more than 1,000 Fresnel lenses to lorry drivers at their check points at Holyhead and Ewloe.
Since December 2007, in an attempt to reduce "side-swiping" - caused when motorists are travelling in the HGV's blind-spot, the Department for Transport has handed out more than 200,000 Fresnel lenses to foreign lorries entering the country.
24 cm diameter acrylic Fresnel lenses to determine the effect of lunar dust simulant on concentration performance.
The Government has begun to respond to the crisis with the distribution of 40,000 window-mounted lenses - known as Fresnel lenses - to left-hand drive trucks entering the UK from Dover.
The government has begun to respond to the crisis with the distribution of 40,000window-mounted lenses - known as Fresnel lenses - to left-hand drive trucks entering the UK from Dover.
To try and reduce the number of these incidents on our roads, we worked with VOSA on a trial of fresnel lenses, which are placed on the passenger side window of the HGV, giving the driver a greater view of overtaking vehicles.
The Highways Agency, the Vehicle and Operator Services Agency and the Immigration Service will distribute 40,000 stick-on Fresnel lenses, free, at three French ports to drivers of left-hand drive trucks bound for the UK.
Lenses, 2006, three Fresnel lenses, each just over two feet in diameter, suspended in the reception room, functioned, for me, like giant blind spots signaling an oncoming migraine, inverting and exaggerating the scale of an image only to make it evaporate in a cloud of light.
The Supermex consisted of a sensor monitor, which was mounted above the cage to detect changes in heat across multiple zones of the cage through an array of Fresnel lenses.