It is an unfortunate fact of life that the most expensive component of a projector, the projection bulb, actually dims over its life. In fact the lamp life rating is the time till the bulb is producing only half of its original brightness which has significant impact on projected image brightness.
Projector lamp is actually the correct term used for the projector bulb mounted within a module for ease of installation and handling. Unfortunately, lamp is commonly used interchangeably with bulb causing confusion.
Following are some simple tips to improve the life of your projector bulb and save a potentially significant amount of money.
- Use Lamp Economy Mode: With a minimal reduction in lamp brightness it is possible to achieve up to a 50% increase in projector bulb life. The reduction in brightness for economy mode varies between projectors however, it is generally within the range of 10 to 30%.
- Avoid Overheating: Every manufacturer specifies a minimum distance to solid surfaces which could block the cooling intake and heat exhaust. Not following the guidelines can cause overheating. Simply consult your operations manual and observe the safe distances which are probably about 2 feet (600 mm).
- Operate in a Dust-free Environment: Dust clogs vents and can rest on the projection bulb causing overheating problems. Projector lamps will last longer in a dust free environment. Air conditioner filters do a good job of removing dust.
- Clean Air Filters Regularly: Not all projectors have air filters (some are self cleaning) but if present they should be cleaned at the intervals recommended by the projector manufacturer.
- Avoid Excessive On/Off Cycles: The thermal stresses of being turned on and off are a significant factor in aging a projection bulb. Reducing the number of on/off cycles should be something considered when using your projector. It’s also essential to allow the projector to go through its cool down cycle and never turn off the projector by turning it off at the wall power switch.
- Avoid Power Surges: All electronics hate voltage spikes and projectors and projection bulbs are no different. A surge protector for your projector and other audio visual home electronics is a wise investment.
- Avoid Mechanical Shock and Vibration: Mechanical shock and vibration can damage a projection lamp. This is especially true when the lamp is hot and the bulb filament is most fragile. Avoid moving a projector when it is running or has not cooled down.
- Never Touch the Bulb: Even trace amounts of oil from a fingerprint on the bulbs glass surface can cause hot spots, thermal stresses and early failure. Only handle lamp module unless you need to replace the bulb. Use a clean, dry cloth if you need to handle the bulb and follow the manufacturers safety directions.
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