Projector lamps act as light sources for projectors allowing an image to be formed on a projection surface. Depending on the type of projector that you are using, the lamp life can vary.
Typically, most projector lamps last for between 1500 and 3000 hours but you can also find newer models whose lamps can be used for more hours before needing to be replaced. A great example of this is LED projectors that are claimed to have lifespans of over 30,000 hours.
Projector lamp technology has developed over the years and unlike the early days where one main type of bulb was used for most projectors, you can now find projectors that use technology such as lasers which last longer.
You also need to understand the difference between a lamp and bulb as these terms are often used to mean the same thing.
A bulb is the light source that is housed in an assembly known as the lamp. In simple terms, a bulb is one part of what makes up a projector lamp although these terms are often used interchangeably.
So, which are the different types of projector lamps, and how long does each type of lamp last? Let us take a look into that.
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Types of projector lamps and how long they last
1. Standard HID/halogen Projector lamps
Standard lamps include High-pressure metal halide lamps or Ultra-High-Pressure mercury arc lamps. These lamps usually have lifespans of between 1000 hours and 5000 hours but most of them last from 1500 hours to 3000 hours.
2. LED lamps (Light-Emitting Diode lamps)
LED lamps are made up of a semiconductor light source that glows or produces light when voltage is applied through it.
Lamps made up of LED bulbs are smaller, consume less energy, produce less heat, and most importantly last longer. LED lamps can last for between 20,000 hours and can reach up to 60,000 hours which makes them ideal for longer use and more compact projector builds.
3. Laser projector lamps
Laser or “light amplification by stimulated emission of radiation” is an advanced light source that is used in newer projector lamps.
These lamps are energy efficient, color-accurate, long-lasting, and need less maintenance overall. Laser projector lamps have a lifespan of about 30,000 hours on average but projectors made of laser lamps are costlier than the other technologies.
4. Hybrid or dual-light lamps
Hybrid lamps combine two or more light sources to take advantage of the benefits offered by each bulb to produce sharper, brighter, and high-contrast images. This can be a combination of two led bulbs, two standard lamps, or even a combination of laser and led.
These lamps have varying lifespan usually between 25,000 hours and 20,000 hours. They are also made in such a way that if one of the lamps fails, the other lamp takes over but has to work twice as hard for optimal performance until you replace the failed lamp.
How to know if your projector lamp will need replacement
Check on the lamp’s health status
Many projectors have an indicator that flashes with a red or yellow-colored light when the lamp is bad or when it’s going bad. You can use the user manual to locate the indicator but in most cases, the light will flash on the projected image or at the top, bottom, or back of the projector.
If you have not experienced any loss in image quality, you can purchase a replacement and keep it until the lamp burns out or when the image quality drops.
You can also tell the lamp’s status by checking the lamp life and knowing how much life the lamp is left with or if it has exceeded the life expectancy. This can be found in the manual or on the menu under the lamp life/lamp hour option.
You can also manually inspect the lamp to check on its status by carefully unscrewing the lamp cover. Check for any signs of physical damage, burns, or a burning smell. The user manual should have guidelines on how you can remove the lamp cover but when doing this, you should ensure the projector is turned off and that it has had enough time to cool off.
Loss in image color and quality
Sometimes when the projector’s lamp is going bad the projected image may appear washed out, the contrast drops due to lack of saturation and the brightness may also drop.
This happens immediately you turn on the projector because the lamp may not be bright enough or because it is not able to accurately project the colors. Images that were supposed to pop with color appear washed out, the image may appear muddy or you may notice that the colors are off.
However, if the image quality drops after the projector has been in use for several minutes, there might be something else causing the loss in image quality as the projector warms up.
- Breaking down or slow decline of the projector’s optical polarizing filters mainly due to dust.
- Dust or oil build-up in the projector that changes the color properties of the projector to change as it gets warmer.
- Heating up of the controller board leading to a loss in contrast.
- Power supply problems mainly due to capacitors that may be going bad or are already damaged.
- Overheating due to broken fans or clogged cooling channels.
Another sign of a projector lamp that may need replacement is the flickering of the projected image but may also occur after replacement if you fail to use the right replacement lamp.
Complete lamp breakdown
If your projector turns on but no image appears, your lamp may have completely gone bad.
Sometimes the gradual decline of the lamp’s performance may go unnoticed to us as our brains are wired to compensate for any inconsistencies. This means that you may fail to notice as the image-quality slowly goes down before the lamp dies.
You may also lose the image as you are using the projector and usually you will hear a popping sound before the image disappears from your screen with the projector still on.
A complete lamp breakdown may also happen prematurely even before the lamp reaches its lamp life.
Buying a projector replacement lamp
Once you have determined that you need a replacement lamp, you should ensure that you buy a proper and working lamp that will be suited for you. Your budget will heavily influence the lamp that you get.
Some lamps can be cheaper than others but the price range is usually between $100 to upwards of $400 depending on the projector’s model and quality. It is common for lamps to cost half as much as the projector as a whole.
You will find that for a $1000 projector, a replacement lamp can cost as much as $450 or $200 for a $350 projector. This is absurd but it is good to know the price beforehand and determine if it is worth spending as much for a replacement lamp or if you are better off buying a new projector.
With that in mind, you should know there are two main types of lamps that you can find in the market and these are;
- OEM alternatives
What is an OEM lamp?
An OEM or Original Equipment Manufacturer lamps is a projector lamp made by the projector’s original manufacturer. OEM lamps are usually made to be an exact match of the lamp that your projector originally came with and tend to be costlier than their alternatives. You can also get an OEM replacement if you are on a warranty.
Typically, OEM lamps are mainly found on the manufacturer’s website but you may also find cheaper generic lamps online that may claim to be OEMs.
Different manufacturers use different acronyms for their OEM replacement lamps such as;
- Epson- UHE
- Philips- UHP
- Osram- P-VIP or VIP
- Phoenix- SHP
- Iwasaki- MSCR or HSCR
OEM lamps alternatives
These are generic replacement lamps that are not made by the original manufacturer. OEM alternatives tend to be cheaper but may also lack the quality found on the original replacement lamps.
They can also use bulbs from the original manufacturer but with a generic housing for the bulb to match the picture quality and performance of original OEM lamps. This means that you get an OEM alternative that is cheaper and is also half-OEM.
These alternatives come in handy if you are looking to save money or if the manufacturer no longer makes OEM replacement lamps. They can also be used as placeholders before you save up and get enough to upgrade your projector set up.
However, it is highly recommended to get an OEM replacement lamp although it may be more expensive mainly due to compatibility or quality issues. You also lower long-term maintenance costs.
How to replace a projector’s lamp
- Ensure that you turn off your projector, unplug it from the power source and allow it to cool down completely.
- Locate the lamp compartment usually on the bottom-rear part of the projector to the left or right.
- Unscrew the panel to access the lamp. You will usually need to unscrew about 4 screws before removing the cover.
- Use a soft non-abrasive cloth to carefully lift and remove the lamp assembly ensuring that you unplug any power cables that are connected to the lamp. If there any broken glasses from the lamp, use a damp cloth/clean potato to lift and remove the glass before cleaning the compartment to avoid injury.
- Place the lamp assembly away and use soft lint-free/micro-fiber cloth to gently clean the lamp compartment to get rid of dust and any dirt.
- Put the replacement lamp into the compartment and reconnect the power cords. Ensure that you match the orientation that the original lamp was in before sliding in the new lamp assembly.
- Screw-in and secure the lamp compartment cover.
- Use the user manual to reset the lamp timer to zero. Some OEM replacement lamps will automatically reset their counters.
How to prolong your projector lamp life
1. Maintain proper ventilation to prevent overheating
Projectors emit a lot of heat when in use and lack of proper ventilation can tremendously reduce the lamp’s lifespan.
Ensure that the projector has enough room for free airflow which also reduces the fan noises as they do not have to work as hard to cool the projector.
You can also add a quiet in-wall fan close to the projector to increase airflow and pull hot air away from the projector. This fan can be connected to the projector’s volt trigger to turn on when the projector is in use and to turn off some minutes after you turn the projector off.
2. Don’t let your projector overheat
Apart from effectively ventilating your projector to prevent overheating, you can also reduce overheating by not using your projector for prolonged periods.
You can also reduce overheating by occasionally cleaning the projector. The fans and filters should be kept dust-free to prevent clogging of the cooling channels.
If the dirt and dust build-up on the air filter is too much or if it damaged, replace it.
3. Use Eco-mode/Economy operating mode
You can prolong your projector’s lamp life by using eco-mode to save electricity and reducing strain on the lamp. When using this mode, the projector will essentially use the least amount when idle.
However, this will usually make the image less bright.
4. Allow your projector to cool down completely before moving it
Always allow your projector to cool off completely before moving it after powering it off. You should also allow it to cool down before turning it back on again.
Also, never move the projector when the lamp is still on.
My final take
Projector lamps are not the same as some are more power-efficient than others, others are brighter and others last significantly longer than others.
Lamp life is a very important consideration that you should make before buying any projector and also during replacement. But before buying a replacement lamp, you should ensure that it is compatible with your projector and that replacing the lamp will solve the projector’s issues.