How Does a DLP Projector Work

A DLP Projector is one of the most common display devices that is being used in various industries and organizations right now.

If you are looking forward to buying a DLP projector, you must be planning to use the projector to display various images, videos, and presentations. Yes, the DLP projector works just like any other projector and you can use it to display your presentations and even images on a big screen. But the display of the images or videos on the screen is not done through bulbs like the other projectors, but using tiny mirrors.

Many people are confused about how does DLP projector works. The inventors of the DLP projector are Texas Instrument which invented DLP in 1987. DLP projector uses digital micromirror device technology to create a sharp, high-resolution image.

But before this, we need to understand what a DLP Projector is?

What Is a Projector?

Do you know the First name of the projector was Pnatoscope? It was developed by Francis and Thomas Armat. Francis and Thomas Armat both were trying to invent a motion picture projection device and they succeed. First, they used this device to deliver lectures in schools and colleges. After some time this device was used in cinemas and opera houses. Opera houses are very big places and lots of people are there to listen to opera and here the organizers use these projectors to tell the stories.

“Now you know very well about who invented the projector and what was the first use of these projectors”.

Basically, that Projector is also known as an image projector. This is also known optical device that is used to display or project an image or motion of images by shining light and by using a small transparent lens.

Types Of Projectors

There are five types of projector that we are used in over daily life

  • DLP ( Digital Light Processing) Projector
  • LCD ( Light Cristal Display) Projector
  • LED ( Light Emitting Diodes) Projector
  • LCOS (Liquid Crystal on Silicon) Projector
  • Laser Projector

What is a DLP Projector?

DLP projector is a combination of chips. DLP projector was developed in 1987. The person who develops DLP Projector was Larry Hornbeck. The place the DLP Projector invents is Taxes Instrument. But DLP projectors were introduced in 1997, in this long period of time the inventors updated these projectors day by day. Then in 1998 the DLP projector and Taxes Instruments got an Emmy award.

Uses of DLP Projectors

DLP projectors are basically used in classrooms and business fields and cinemas and also television displays and to display a digital signs etc. The chipset used in this technology is based on a micro-electro-mechanical system (MEMS) and uses a micromirror device.

DLP Cinema

After getting an Emmy Award the inventor upgraded this projector a lot. Then this projector was commercially used in Cinemas. The first movie displayed with the help of a DLP projector was Star War: episode (I). The date of releasing this movie with the help of a DLP projector was 1999.

They also display the computerized animated movie Tarzan in the same year.

They also display toy stories (II). Toy Story 2 is the first movie that is fully edited and created and display digitally. Most of the theaters installed digital projectors before releasing this movie.

DLP cinema progressed a lot in a few years and it became the leading digital cinema all over the world.

How Does a Dlp Projector Work?

We know that DLP stands for digital light processing device. In this picture, we clearly see that the projection lamp transfers light to the color wheel. Then this wheel transfers light to the relay lens. This relay lens transfers light to the Digital micromirror Device (DMD). Then this device transfer light to the projection lens.

So this is the working process of the DLP projector and is shown in the diagram.

DLP Projector Working

Digital Micromirror Device (DMD)

Digital Micromirror Device is the backbone of the DLP projector. It is a very important feature of the DLP projector. Digital Micromirror Device is basically used to display or create a video display in a DLP projector. Basically, DMD is a small chip and it is used in most projectors and televisions.

How to Connect a Laptop to a Projector?

The basic step of connecting a laptop with a projector are listed below. All you need is a laptop, a projector, a set of speakers, a VGA or HDMI cable, and a power cord.

  • First, make sure the laptop and projector both are off.
  • Next, try to connect the VGA cable to the VGA connector or HDMI cable to the HDMI port on your laptop and on the projector.
  • Third thing is to plug the projector power core into the projector and electric board.
  • Then turn on the laptop and projector.
  • When your laptop turns on then go to the function keys and press F1, F2, F7, F8.
  • the last step is to adjust the focus of your projection.

Advantages of DLP Projectors

It requires less maintenance because they have a filter-free and sealed chip.  

Disadvantages of DLP Projectors

  • With a three-panel design, each panel required a perfect place if each isn’t in the perfect place then the quality of an image is decreased.
  • DLP projector is slower than other projectors.
  • If the chip is sealed and other components are not then they affect the image. We didn’t see a clear image if other components are not properly sealed.
  • If we placed the DLP projector at a far distance then we didn’t get a large image.
  • DLP projector required a smaller environment to display any type of image.

DLP Projectors vs LCD Projectors

While comparing an LCD projector to a DLP projector, we see the good quality of the image in LCD Projector as compared to the DLP Projector because the LCD projector used three liquid crystal displays as the result we get beautiful images. However, a one-chip DLP projector used a fast-moving color wheel as the result they break the colors of the image.

That’s why the LCD projector is better than a one-chip DLP projector. If we test the display output white light of both projectors then we see that LCD is better than the DLP projector.

In this picture, you see one side is clear and the other side is a bit dark. So the color resolution of the LCD is better compared to the DLP projector.


We hope you enjoyed our article about how a DLP projector works. Now you will be in a position to decide which projector is best depending upon your usage. With this knowledge, we know that you can make the most of your business meetings and collaborate with ease on projects when using video conference software. On the other hand, if you are a teacher you may use these projectors in the classroom for teaching your students by presenting your content on a larger screen.

You can also read other articles from 10Besties Knowledge base by clicking here or may go to the home page by clicking here.

Suggested Readings
11 Tips for Choosing a Best Projector for Home Theater
Best Home Theater Projector Setup Ideas – How to Setup a Projector
Can You Play Games on Projector?
Are Mini Projectors Worth Buying?
Which Is Better DLP or LCD Projector

Fahad, Mohammad.
Fahad, Mohammad.

Hi, I am Fahad, Mohammad. I am an Assistant Professor of Computer Science, a researcher, a die-heart entrepreneur, a blogger, and an affiliate marketer. I have many research articles published in reputed journals of the world. I also love to write about technology after my 20 years of experience in this field. I hope you will love this blog.
Don't forget to keep in touch with me through our contact us page, if you have any queries or suggestions.

Articles: 135

Leave a Reply

Your email address will not be published. Required fields are marked *