Importantly, the lens does not obstruct the driver s view of the road or the existing mirrors. I ordered this 3x full page magnifier fresnel lens by jupiterwholesale to mount in a frame and use as a solar heater experiment. Fresnel lenses are quick and simple to fit and offer an immediate benefit. Newspaper article the evening standard london, england the lorry lens to stop cyclists being killed. These can be obtained from ebay and similar places and are found by searching for fresnel card.
This short video clip shows how the use of an inexpensive stick on fresnel lense can greatly reduce road accidents involving hgvs. Crossrail vehicle safety equipment supplementary guidance fresnel lens works information ref. I want to be sure that before i buy a projection tv that the lens is really in there. Truckers can install the protective side bars to the truck to help prevent cyclists and small cars from sliding under the side of the truck. Do not use an ammoniabased cleaner wet the inside of the windshield thoroughly with water place the smooth side of the lightinsight against the glass, curved side up. A wide variety of fresnel lens price options are available to you, such as plastic, glass. An ideal fresnel lens would have an infinite number of sections. A fresnel lens is a thin and flat optical lens which consists of a series of small concentric grooves narrow on the surface of a light plastic sheet to reduce thickness, weight and costs. The results follow the distribution of 40,000 windowmounted lenses known as fresnel lenses to lefthand drive trucks entering the uk across the dover straits. This style of lens was most often used in lightships. Used primarily as a seacoast light, its beam is visible over twenty miles out to sea. Based on the 1822 lens design by french physicist augustinjean fresnel, it was originally intended for lighthouses, hence its larger aperture, shorter focal length and much thinner design compared to conventional lenses. This is the hi vu fresnel safety lens for hgv drivers.
The list of companies that supply compliant a4sized fresnel lens can be found below. Due to a blind spot, drivers of trucks cannot see smaller vehicles or other vulnerable road users which are immediately next to the passenger side door of their hgv. The mirrors concentric ring surface provides the driver with a clear view directly through the lens so it is not a reflected view as with a. Scientists show you how to make an invisibility cloak sort of. Hi vu truck lens fresnel lens stops close proximity. Hop onboard an hgv and see what they cant see bike blog. A simple device known as a fresnel lens would eliminate blind spots experienced by foreign heavy goods vehicle drivers.
The truckview fresnel lens is a simple, low cost device that provides hgv drivers with a clear view of the external area below the passenger side of their cab, thus eliminating road accidents. This next generation fresnel lens has been produced because truck drivers observed that previous, larger lens models took up too much passenger window space which obscured the driver s view of more distant, fast oncoming nearside traffic at road junctions. Truck lenses hi vu fresnel lens stops close proximity mirror. The fresnel lens provides an extra downwards view for the hgv driver so that at a glance he can see any vulnerable road user that might be hidden. It is a clear thin plastic lens that is press fitted to a lorry window on. Fresnel lens eliminate all blind spots on hgv vehicles. Hi vu is the next generation fresnel lens that has been produced because truck drivers observed that previous, larger lens models took up too much. Its concentric ring surface allows the driver to see through it directly, so its not a reflected view. When finished with a project, store the lens covered, preferably in a dark room or closet, away from windows that experience direct sunlight. Its concentric ring surface allows the driver to see through it directly, so its not a reflected view however its advanced optical properties provide a downward view close to and around the trucks passenger door mirror blindspot area. Truck fresnel lens truck accessories truck parts, bus. The trucknet uk drivers roundtable view topic fresnel lens. Hi vu fresnel lens stops close proximity mirror blind. Lens techs selfadhesive fresnel lens combines the best lightbending properties within a small a5size, flat, pvc or acrylic lens.
Clean the inside of your windshield in front of the driver, near the top. Reduce blindspot and sideswipe accidents truckview. Its concentric ring surface allows the driver to see through it directly. As well as enhancing vehicle and atm vision applications, we also manufacture specialised pvc components like the beam director fresnel lens, which diverts vehicle headlamp glare away from oncoming drivers when vehicles are taken abroad from great britain and driven in. Scientists show you how to make an invisibility cloak. It is a clear thin plastic lens that is press fitted. Hi vu truck lens hi vu fresnel lens stops close proximity. Magnifying tools free delivery possible on eligible purchases. In total, 40,000 stickon fresnel lenses were distributed free of charge at three french ports to drivers of lefthand drive lorries coming to the uk. Lenstechs selfadhesive fresnel lens combines the best lightbending properties within a small a5size, flat, pvc or acrylic lens. Hi vu fresnel lens stops close proximity mirror blind spot. We know these mirrors are being given out to foreign lorry drivers.
The truckview fresnel lens is a simple, low cost device that provides hgv drivers with a clear view of the external area below the passenger side of their cab. It can be 12 feet in height and more than 6 feet in diameter. Each groove has a slightly different angle than the next and with the same focal length to focus the light towards a central focal point. It is a clear, thin, flat plastic lens that is pressfitted to a trucks passenger door window glass. Optical design using fresnel lenses basic principles and some practical examples the fresnel lens can be used in a wide variety of applications. Generally fresnel lenses are divided into 7 classes called orders. Truckview fresnel lens the road haulage association. Lens techs selfadhesive fresnel lens combines the best lightbending properties.
The new wave of 90,000 lenses will be distributed at liverpool, the hull ports, newcastle, heysham and harwich and in france at calais, coquelles and dunkerque. Jun 16, 2016 cheap plastic fresnel lenses and what they can be used for. Plastic fresnel lenses are used as magnifiers when a thin, light lens is needed. It is a clear, thin, flat plastic lens that is press fitted to a trucks passenger door window glass. The thin piece of plastic you are using is called a fresnel lens. The fresnel lens is a clear, thin, flat plastic lens that is press fitted to a trucks passenger door window. It is a terrible tragedy when a cyclist or motorcyclist gets killed or seriously injured when hit by a hgv driver while turning left at a junction or sideswiped on the main road because the driver did not see them due to the passengerside blind spot. Wide anglemagnifier rear window lens page 2 teambhp. A hi vu fresnel lens gives a truck driver an extra 30 degrees downwards view. As the focal length is effectively out past the drivers side window there is nothing for the concentrated light to act on.
Also, if they do, are they generally linear or spot pattern. Fresnel lenses we first used in the 1800s as the lens that focuses the beam in lighthouse lamps. It is a clear thin plastic lens that is press fitted to a lorry window on the near, or passenger side. Right turning trucks and preventing cyclist accidents.
The circular refelctions can be confusing sometimes though, once i was about to take off at some traffic lights, i glanced at my fresnel and i couldnt make out if it was a yellow car along side me or a giant banana. The highways agency will now distribute a further 90,000 lenses, targeting major ports in both england and france. A soft plastic lens with a selfadhesive border which fits. A hi vu fresnel lens pressfits inside the trucks passenger side window and is held firmly in place by its. The fresnel lens cape hatteras national seashore u. It is a clear thin plastic lens that is press fitted to. Lenstechs selfadhesive fresnel lens combines the best lightbending properties.
You could also create a system to help truck drivers see through the obstructions on their vehicles although a plain old rear. A wide variety of thin fresnel lenses are molded in plastic, the width. May 27, 20 i want to play with a big fresnel lens and picking up a used rear projection tv might be the cheapest method of obtaining one. Ext 007 this premium model hi vu lens version is made in rigid, clear, bright acrylic material offering a low profile, selfadhesive, multivehicle use, antiblind spot capability thats designed to pressfit. Now, from the makers of the truckview fresnel lens comes vanview. Fresnel lenses could make a contribution to improving lefthand drive lhd hgv driver vision to the nearside offside in the uk. Fresnel lenses are used in lefthanddrive european lorries entering the uk and republic of ireland and vice versa, righthanddrive irish and british trucks entering mainland europe to overcome the blind spots caused by the driver operating the lorry while sitting on the wrong side of the cab relative to the side of the road the car is on. What a pain compared to just sitting back comfortably and waiting for that little red dot in the lens to go green. By installing a fresnel lens on the passenger side window, truck drivers can see a downwards view so that at a glance the driver can see a cyclist who may. Jun 02, 2019 also the focal length of the fresnel lens designed for a lorry is way past the driver otherwise the driver could only view the image in one precise spot. May 14, 20 todays common fresnel lens, and the one a woodsman should carry, is a superthin business card sized piece of plastic.
The manufacturer says lightinsight works for all kinds of vehicles and is especially helpful for taller drivers, drivers in smaller cars, delivery vans and trucks, and drivers with a mobility problem, such as a neck or back problem. Fresnel lenses fresnel lenses are a visual device for lorry drivers and is not a mirror in the conventional sense. Vosa fresnel lens report page 5 of 112 1 executive summary 1. Importantly, the lens does not obstruct the drivers view of the road or the existing mirrors.
That means that the top half of a cyclist situated in the close proximity mirror blind spot position, directly alongside the trucks passenger door, will be seen by the driver through the window lens. The answer to this, at the moment, is to use a fresnel lens, which is used in the htc vive, oculus rift, and other hmds. As well as enhancing vehicle and atm vision applications, we also manufacture specialised pvc components like the beam director fresnel lens, which diverts vehicle headlamp glare away from oncoming drivers when vehicles are taken abroad from great britain and driven in continental europe, or vice versa. If i wanted one thing changed, it would be a little solid edge to make it less flexible. A hi vu fresnel lens pressfits inside the trucks passenger side window and is held firmly in place by its own peelback selfadhesive. The top countries of suppliers are india, china, and taiwan, china, from which the percentage of fresnel lens price supply is 1%, 88%, and 11% respectively. The power of the sun can be deceiving and anyone using a fresnel lens for solar collection should get in the habit of treating the fresnel lens like a stove, furnace, or blowtorch.
That fresnel lens in your survival kit master woodsman. The fresnel lens is a visual device for lorry drivers and is not a mirror in the conventional sense. The lens that eliminates the hgv passengerside blind spot. It is a clear thin plastic lens that is press fitted to a lorry window on the. Jan 03, 2015 i removed a fresnel lens from a broken tv to see if i could use it to burn stuff. In each section, the overall thickness is decreased compared to an equivalent simple lens. Although the hi vu fresnel lens is a visual device for drivers, its not a mirror. The first order fresnel lens is the largest lens widely used, and was installed in many of the largest sea coast lights. Cylindrical fresnel lenses are used in shipboard lanterns to increase visibility. Wipart 26 safety kit v5 19th january 2012 tfl vehicle safety equipment supplementary guidance fresnel lens product description the product image the product fitted fresnel lenses are a visual device for lorry drivers and is not a mirror in the conventional sense. Also the focal length of the fresnel lens designed for a lorry is way past the driver otherwise the driver could only view the image in one precise spot. Stick it to the passenger side window and it immediately affords an at a glance direct view into the. Hi vu is a small, low profile lens 21cm x 12cm that takes little space. The truckview fresnel lens is a thin clear flat plastic lens that is fitted to a trucks nearside passenger door window.
For your guidance, in regard to the choice of fresnel lens offerings available in the marketplace, please note that it s not advisable to use a standard caravan type fresnel lens on a hgv. This frame was filled with prisms and generally gave off a constant or fixed characteristic. An ideal fresnel lens would have infinitely many such sections. This lens style is the least common used and consisted of a cylindrical shaped frame that sat down around the light source. Btw i think fresnel lenses are great and they should be compulsory for every lorry. Hi vu is the next generation fresnel lens that has been produced because truck drivers observed that previous, larger lens models took up too much passenger window space which obscured the driver s view of more distant, fast oncoming nearside traffic at road junctions. The final style of fresnel lens used is known as the drum style. The fresnel lens reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. Thorlabs fresnel lenses offer light focusing and collimation without the bulk associated with traditional lenses. Crossrail vehicle safety equipment supplementary guidance. Fresnel lens design allows a substantial reduction in thickness and thus mass and volume of material, at the expense of reducing the imaging quality of the lens, which is why precise imaging applications such as photography still use conventional bulky non fresnel lenses. Eu laws stop uk government from making foreign lorries carry. Fresnel lenses are divided into different sizes, called orders.
Fresnel lens blind spot mirror for commercial bus,coach. Truckview helps hgv drivers detect other road users when. The dangers of blindspots and the solutions available to mitigate. That means that the top half of a cyclist situated in the close proximity mirror blind. Although the hi vu fresnel lens is a visual device for continue reading blind spot fresnal lens. Fresnel lens midtronics stop fuel theft driver incident. A onepiece moldedglass fresnel lens is convenient for spotlights, floodlights, railroad and traffic signals, and decorative lights in buildings. The six orders of the fresnel lens used in the united states. There are 322 suppliers who sells fresnel lens price on, mainly located in asia. Fleet fresnel lens vehicle conversion fast fit nationwide. Truckview is a clear, thin, flat soft pvc lens that is both easy to press fit and even easier to remove from a trucks passenger door window glass. With large reflection angle of the led point lamphouse, the emanative ray spreads the heat and compares severity, making use of the fresnel lens to gather the light function. Truckview fresnel lens ext 0106 road haulage association.
That means that the top half of a cyclist situated in the close proximity mirror blind spot position, directly alongside the truck s passenger door, will be seen by the driver through the window lens. The fresnel lens that eliminates the hgv passengerside blind spot. The first order lens is the largest and most powerful. Vosais specification for the type of fresnel lens to be used in a hgv.
Fresnel lens blind spot take care safety signs and notices. There are definite advantages and tradeoffs that should be considered when. Hi vu is a next generation fresnel lens that has been produced because truck drivers observed that previous, larger lens models took up too much passenger window space which obscured the driver s view of more distant, fast oncoming nearside traffic at road junctions. Truckview reduce blindspot and sideswipe accidents.
Fresnel lenses halve lhd hgv sideswiping motoring news. Vanview this is a smaller lens, 6 wide by 8 high, its easily attached directly to the vans passenger side window glass without tools or adhesives, and is easily removed and reattached as needed. Truck fresnel lens blind spot lens receives excellent feedback due to a blind spot, drivers of trucks cannot see smaller vehicles or other vulnerable road users which are immediately next to the passenger side door of their hgv. Ext 007 this premium model hi vu lens version is made in rigid, clear, bright acrylic material offering a low profile, selfadhesive, multivehicle use, antiblind spot capability thats designed to pressfit to the inside of a vehicles window glass. The order is determined by the distance of the flame to the lens. Fresnel lens at least a4 size the fresnel lens gives the driver a better view of the blind spot directly next to the passenger door.
Before moving off, if there is a crane fitted on your lorry, check that it is adequately retracted. These unseen road users can be hit if the truck changes lane in their direction. Eu laws stop uk government from making foreign lorries. A soft plastic lens for hgvs or pcvs that brings the drivers blind spot into their field of vision, allowing cars, cyclists, and pedestrians to become visible.