Recently however, Uniflood lamps have captured the limelight. Firstly, they played a key role in the filming of a BBC Wildlife Special programme devoted to leopards and subsequently featured in the making of 'Big Cat Diary', where the lamps were used to film hippopotami, alligators and lions in Tanzania's Ngorongoro Crater.
Since then Derwent lamps have featured in several Wildlife productions including Alex Willis' Africam Productions and Live webcam site www.Africam.com
The animals pictured are video photos that would not have been available without the invention of infra-red lamps. They are in their natural environment, all in the dark, and in the case of the leopard hiding in the grass, trying hard as usual to make a killing!
The way the world is seen is changing … at least in the dark. Without the high definition pictures the night-time filming to broadcast quality would not have been possible.
The challenge was to provide high quality, low noise evenly illuminated CCTV images during total darkness.
Uniflood was established with the intention of combating the problem of uneven illumination. Derwent claims these sorts of lamp were unable to light up distant objects as clearly as those in close to the camera. The result was a kind of 'white out', where the lamps picked out near objects, making them shine brightly on the screen, and blurred objects furthest away from the camera.
Derwent says its lamps work on the same principle as a radar. Uniflood has a special shape (cosec2), sending longer beams to the area furthest from the camera, and shorter beams to the area nearest.
The result, the company points out, is the same for CCTV as it was for the broadcast industry – objects appear with equal definition on the TV screen, regardless of how far away they are. It was this technology that impressed the BBC and Africam.
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