Projector lens assemblies can be tricky things to put back together once they have been taken apart. This is especially true if you do not have any experience with projector repairs. This comprehensive guide will walk you through the entire process of putting a projector lens back together. We will also provide some useful tips and advice to help make the process easier for you. Let’s get started!
Types of the projector lens
The most common type is the Fresnel lens. These lenses are made up of a series of concentric rings that refract light in different ways. This results in a beam of light that is parallel when it hits the screen.
Fresnel lenses are usually made from plastic or glass, and they can be either spherical or aspheric. Spherical lenses have a constant curvature, while aspheric lenses have a more complex curve that helps to reduce distortion.
The next type is the GeForce lens. These lenses are designed for use with DLP projectors. They reflect light off of tiny mirrors inside the lens. This results in a very bright image with very little distortion.
GeForce lenses are made from glass, and they can be either spherical or aspheric. As with Fresnel lenses, aspheric GeForce lenses help to reduce distortion.
The last type is the LCOS lens. These lenses are used in LCD projectors. They work by reflecting light off of a liquid crystal layer inside the lens. This results in an image that is very sharp and clear with very little distortion.
LCOS can be spherical or aspheric. As with the other types of projector lenses, aspheric LCOS lenses help to reduce distortion. [1]
What You Will Need
- A Phillips head screwdriver
- A small flathead screwdriver
- Tweezers (optional)
The first thing you need to do is find all of the screws that hold the lens in place. There are usually four or six of them, and they will be different sizes. Once you have found all of the screws, unscrew them.
Next, take your small flathead screwdriver and carefully pry the lens off of the projector. Be careful not to damage the lens or the projector as you do this. If there are any wires still attached to the lens, use your tweezers to carefully disconnect them.
Now that the lens is disconnected from the projector, you can begin cleaning it. Use a soft, dry cloth to wipe away any dust or dirt that has accumulated on the lens. If the lens is very dirty, use a mild cleaning solution and a soft brush to get it clean.
Once the lens is clean, you can begin reassembling it. First, attach any wires that were disconnected earlier. Next, align the lens with the projector and screw the screws back. Be sure to tighten them securely so that the lens does not come loose again.
How To Remove The Projector Lens
Three screws secure the projector lens in place. Use a screwdriver to remove them. Be careful not to drop them, as can be easily lost.
Once the screws are removed, gently pull the lens away from the projector body. There may be a bit of resistance, but do not force it – if you do, you risk damaging the lenses. If the lens does not come out easily, check to see if there are any other objects holding it in place (e.g., wires or cords). [2]
Now that you have successfully removed the projector lens, put it back together. Follow the steps below to reassemble the lens and projector body.
How To Clean The Projector Lens
Firstly, clean the lens. Use a soft, dry cloth. If there are any stubborn smudges, you can use a lightly dampened cloth to remove them.
Once the lens is clean, you will need to align it properly with the projector. This can be done by adjusting the focus knob until the image is clear and sharp. Once you have aligned the lens, tighten all of the screws so that it stays in place.
Now you should be able to easily do it yourself if you ever need to. Just be sure to follow the steps carefully and always use a soft cloth when cleaning the lens. With a little bit of care, your projector should be able to provide you with many years of quality service.
How To Put Projector Lens Back Together
A screwdriver will be required. A Phillips head screwdriver is recommended, but any type will do. Find the screws that attach the lens to the frame. These screws are usually located on the side of the lens barrel.
Using your screwdriver, loosen each of the four screws until they are no longer tight.
Now that the lens is removed, take a look at the inside of the barrel. You will notice two small metal rods protruding from the back of the barrel. These rods are part of the focus mechanism and must be aligned correctly in order for the lens to focus properly.
Using your screwdriver, slightly adjust each rod until they are both pointing in the same direction. Once they are aligned, gently replace the lens into the barrel and tighten each of the four screws until they are snug.
Unscrew the Lens Cap
The lens cap is usually located on the front of the projector and is screwed onto the lens barrel. To remove it, simply unscrew it in a counterclockwise direction until it comes free.
Once the lens cap is removed, you will be able to see the inside of the projector’s lens. Take a look at the glass surface of the lens and inspect it for any dust, or fingerprints. If there is any debris on the lens.
Remove the Front Lens Cover
The front lens cover is a clear piece of plastic that protects the inside of the projector’s lens. To remove it, locate the two small tabs on either side of the cover. Gently press down on each tab and pull the cover away from the lens barrel.
Once the cover is removed, take a look at the inside of the projector’s lens. You will notice two small metal rods protruding from the back of the barrel. These rods are part of the focus mechanism and must be aligned correctly in order for your projector to focus properly.
Using your screwdriver, slightly adjust each rod until they are both pointing in the same direction. Once they are aligned, gently replace the front lens cover onto a projector and snap it into place.
Clean the Lenses
It is important to keep the lenses of your projector clean in order to maintain a clear image. To clean the lenses, first, remove any dirt or fingerprints with a soft cloth.
Next, apply a few drops of cleaning solution onto a clean microfiber. Gently wipe the solution over the surface of the lenses. Once you have finished cleaning the lenses, use a dry portion of the cloth to wipe away any excess solution.
Replace the Front Lens Cover
Once the lenses have been cleaned, it is time to replace the front lens cover. To do this, simply align the two small tabs on the cover with the slots on the lens barrel. Gently press down on the cover until it snaps into place.
Finally, screw the lens cap back in a clockwise direction. Once it is tight, your projector’s lens assembly is now complete!
Replace the Lens Cap
Now that the projector’s lens assembly is complete, it is time to replace the lens cap. To do this, simply screw the cap onto the front of the projector in a clockwise direction until it is tight. Once it is in place, your projector is now ready for use!
Test the Projector
Test the projector to ensure that it is working properly. To do this, simply turn on the projector and aim it at a blank wall or screen. [3]
If the image is blurry or out of focus, adjust the two metal rods on the back of the projector until the image becomes clear.
Tips for Protecting Your Projector Lens
Projector lenses are delicate and expensive, so it’s important to take care of them. Here are some tips:
Always keep the lens cover on when the projector is not in use. This will protect the lens from dust and other debris.
If you’re going to be transporting the projector, ensure the lens is well-protected. Use a padded case or box and don’t put anything else on top of it.
Never clean the lens with anything other than a soft, dry cloth. Avoid using any chemicals or abrasive materials, as these can damage the surface of the lens. [4]
Following these simple tips will help ensure that your projector lens stays in good condition for many years to come. Thanks for reading! I hope this guide was helpful.
FAQ
How do I fix my Onn projector lens?
If your Onn projector lens is loose, you can try tightening the screws on the side of the lens. If that doesn’t work, you may need to replace the entire lens assembly.
To do this, first, remove the four screws that hold the lens in place. Next, disconnect the cable that runs from the lens to the main board. Finally, remove the old lens and replace it with a new one.
Once you’ve replaced the lens, simply reverse these steps to put everything back together. [5]
If you’re having trouble finding a replacement lens, you can always contact Onn customer service for assistance.
Can you replace the projector lens?
Most projector lenses are not meant to be taken apart and put back together again. You can, however, find replacement lenses online or at your local electronics store.
Be sure to read the instructions that come with your replacement lens carefully. It is important to align the new lens correctly so that it will work properly with your projector. [6]
If you are not comfortable replacing the lens yourself, you can always take it to a professional for help.
How do you assemble a projector?
There are a few different ways to assemble a projector. The most common way is to use screws, but you can also use nails or even tape.
Here are the steps you’ll need to follow:
Start by attaching the base of the projector to the stand. You can use screws or nails for this.
Next, attach the lens to the front of the projector. Again, you can use screws or nails for this.
Finally, connect all of the wires from the back of the projector to whatever power source you’re using. This could be a wall outlet or a battery pack. Once everything is connected, turn on the projector and enjoy!
How do you remove a projector lens?
Before you can replace the projector lens, you need to remove the old one. To do this, start by unscrewing the bezel around the lens. Once the bezel is removed, there will likely be four screws holding the lens in place. Unscrew these and carefully remove the lens.
With the old lens out of the way, you can now clean both the inside and outside of the housing. Be sure to use a soft cloth so as not to scratch any surfaces. If there are any smudges or fingerprints on either side of the glass, use a LensPen or other cleaning solution designed specifically for lenses. With everything clean, you’re now ready to install the new lens.
What is an anamorphic lens projector?
It was invented by French inventors Henri Chrétien and Augustin Le Prince in the early 1900s. Chrétien’s original design used a cylindrical lens, while Le Prince’s design used a spherical lens. Anamorphic lenses are commonly used in modern projectors, though not all use an anamorphic projection lens. [7]
How to make a lens at home?
Now that you know the basics of lenses and how they work, it’s time to learn how to make your own! With a few simple household materials, you can create your own projector lens in no time.
Here’s what you’ll need:
- A sheet of clear plastic (you can use an old CD case or transparency)
- A marker
- A pencil
- Scissors
- Tape
- A magnifying glass (optional)
First, use the marker to trace the outline of the lens onto the plastic. Cut out the shape with scissors. Next, use the pencil to draw a smaller circle in the center of the lens. This will be the “aperture” through which light will pass.
Now, cut a small slit in the center of the aperture with scissors. Be careful not to make the slit too big! Finally, tape the lens onto the magnifying glass, making sure that the aperture is lined up with the glass.
What can I do if my projector won’t turn on?
There are a few things that could be causing your projector to not turn on. Check the power cord to ensure it’s plugged in correctly. If that doesn’t work, then you can try resetting the projector by unplugging it and waiting 30 seconds before plugging it back in. If neither of those solutions works, then you might need to replace the lamp or get a new projector.
Another common issue is that the image from the projector is fuzzy or blurry. This can be caused by a number of things, but the most common fix is to adjust the focus knob. If that doesn’t work, then you can try cleaning the lens with a soft, dry cloth.
If you’re still having trouble, then you can contact the manufacturer or a projector specialist for help.
Useful Video: How I removed the dust from the display screen in the Dr J video projector
Conclusion
Putting a projector lens back together is not as difficult as it may seem. With some basic tools, most people can do it themselves. By following the steps above, you’ll have your projector lens fixed in no time.
Thanks for reading!
References
- https://www.projectisle.com.au/Projector-Guide/projection-lenses.aspx
- https://www.gadgetreview.com/how-to-replace-projector-lens
- https://techintegrateed.weebly.com/home/how-to-assemble-a-projector-lens
- https://www.hifivision.com/threads/how-to-maintain-and-clean-a-projector-lens.86023/
- https://ivankyo.com/blogs/tech/how-to-fix-projectors-keystone-correction-and-lens-focus
- https://files.support.epson.com/docid/cpd5/cpd51321/source/setup/tasks/lens_unit_removing_pg7000w.html
- https://www.highdefdigest.com/blog/anamorphic-lens-in-4k-home-theater/