|RANGE OF PECA LED INFRA RED LAMPS|
Peca Electronics manufacture a range of Infra-Red Illuminators based on Light Emitting Diodes (LED's). These lamps offer high efficiency, leading to considerable running cost savings compared to conventional Incandescent IR Lamps. They also provide very reliable operation as the Mean Time between Failure (MTBF) for an LED is around 100,000 hours. This results in fewer service visits and further enhances the costs savings provided by these lamps.
The Series 4000 and 4100 lamps are available with 950nM LED's making them fully covert and suitable for fully covert surveillance applications. The Type 4200 "IR Torch" uses 940nM LED's and is almost covert.
WHY USE LED INFRA RED LAMPS?
A great deal of confusion and misunderstanding surrounds the role and use of Light Emitting Diode Infra Red illuminators for CCTV surveillance.
The popular perception tends to be of a very short range lamp, only suitable for indoor use. Nothing could be further from the truth. Modern LED's are extremely powerful and lamps consisting of arrays of LED's, particularly when used with new CCD cameras, which are becoming ever more sensitive to the near Infra Red spectrum, produce systems with ranges exceeding 60 metres and a field of view of around 40 degrees. This range is achieved with a lamp consuming no more than 24 Watts!
So what are the advantages of LED Infra Red Illuminators. They can be summarised as follows:-1) Low Power Consumption, combined with high efficiency
2) Long life - typically in excess of 100,000 hours.3) Low operating temperatureLet us look at these points in more detail.
1) Power Consumption
Because the proportion of input energy which is converted to useful output energy in the IR spectrum is very much higher in a semiconductor device than using an Incandescent lamp and filter, the power required to illuminate a given area compared with conventional bulbs is enormously reduced, typically by a factor of 10 times. This means that the running costs of the lamp are very much lower - a very important point in these days of high energy costs and the need to conserve energy. It is a fact that although the initial capital cost of an LED IR lamp is higher than its conventional counterpart, the reduced running costs alone should allow the difference to be recouped in the first year of operation.
2) Long Lamp Life
Because LED's are semiconductor devices their mean time between failure (MTBF) is in excess of 100,000 hours. This fact means that the LED IR lamps are very reliable and can be expected to provide trouble free service, usually measured in years, before any remedial work is required. Conventional incandescent lamps however require new bulbs every 6 months or so, which is another factor making the cost of running this type of system much greater than the LED lamps.
There is a small reduction of light output of an LED lamp during its lifetime which amounts to around 10%. This should be allowed for in the design of the installation.
3) Low Operating Temperature
Due to the low power levels involved the case temperatures of LED IR Lamps are very much lower than equivalent range incandescent units. Case temperatures of around 40 degrees Centigrade are typical at ambient temperatures around 25 degrees Centigrade. This allows much greater freedom in the siting of the lamps and makes them safer to handle, particularly on the top of a ladder!
The following pages detail the range of LED Infra Red lamps manufactured by Peca Electronics. They cater for applications from replacement units for current installations to fully covert lamps for security surveillance applications.