The new XIR lamps from Osram provide more light and greater efficiency in the operating theatre than standard halogen lamps. Their high luminous efficacy is achieved by a special coating on the bulb (IRC = Infra-Red-Coating). This is further enhanced by a xenon gas filling.The XIR range of lamps (xenon lamps with IR coating) has been designed for operating theatre lighting. There are three lamps in the range: 64291 XIR, 64668 XIR and 64292 XIR. With an operating voltage of 22.8 V, the 40 W lamp offers 1200 lm and a life of 800 hours, the 80 W lamp provides 3000 lm and a life of 750 hours and the 150 W lamp achieves 6000 lm and a life of 600 hours.
The patented IRC coating, which is applied like a mirror on the outside of the bulb, only lets visible light through, thereby ensuring that a large proportion of the infra-red radiation is reflected back to the filament. This means that less energy has to be supplied from outside to bring the filament up to its operating temperature. This form of heat recovery increases the efficiency of the lamp by as much as 30%, bringing further benefits such as higher luminous efficacy, lower energy consumption and longer life. For operating theatre lighting the lamps have been optimised for luminous efficacy.
The XIR lamps from Osram provide as much as 50% more light for the same energy consumption and the same temperature in the luminaire. These lamp properties perfectly match the requirements for operating theatre lighting. Tungsten-halogen lamps are cost-effective, easy to run, provide almost instant light as soon as they are switched on and can be faded up or down with no problem at all.
They are insensitive to the high temperatures in the luminaire and offer brilliant light throughput their entire lives with a constant high colour temperature and excellent colour rendering.
