The lamps used in RazTech Lighting systems vary by model or option. Generally, lamps with higher wattage produce more light; output is rated in lumens. Color temperatures are also a major factor in projection quality; color temperatures are rated in degrees Kelvin. Lamps with a higher color temperature produce whiter light. Available color temperatures range from 3,200 degrees Kelvin to 4,500 degrees Kelvin (a medium source daylight). High temperature, cost, lamp life, and fixture size are factors associated with the light source.
Color Temperature is a measurement in Degrees Kelvin that indicates the hue of a specific type of light source. Many people believe the misconception that colour temperature is a rating of the brightness of the bulb or HID. This belief is completely false. The reality of the matter is that the higher the colour temperature, the less useable light output you will obtain. A perfect example would be a black light. This light has a colour temperature of approx 12,000k and has almost no useable light or lumens output.
Halogen Technology are widely use because of the low initial cost, relative long life, replacement costs, and good light intensity. Low voltage halogens are much more efficient than line operated halogens. In projection systems low voltage halogens are good because of the small filement size.
HID Technology or high intensity discharge
lamps do not have a filament. Instead the light is created by an electrical discharge between two electrodes in an air tight tiny quartz capsule filled with xenon gas, mercury and metal halide salts. These light sources also produce a blue-white light that is more visible because it is closer to natural daylight. The color temperature is approximately 4200 K compared to 3200 K for halogen. The increased light output from a 35 watt XENON HID lamp is approximately 80% more light then a 55 watt halogen bulb. The XENON HID system will also draw less power. The initial cost of HID can be high compared to halogen light sources.
Led technology or light emitting diode is a technology gain ground in many applications. As a projection source the led light needs to have more intensity.
