What Is DLP Projector And How It Works: Explained


By Arindam Roy

Laser Projectors are the future for homes and classrooms! They have a short lag time, and high resolutions. This article will show you how to install a projector in your home or classroom! If you’re looking to take your home or business projection to the next level, this article is for you.

What is DLP Projector?

DLP stands for Digital Light Processing. It is one of the most advanced technologies in terms of 3D imaging from computer projectors, because it provides images that are sharper, more colorful, and higher resolution than LCoS (Liquid Crystal on Silicon) projectors. Moreover, DLP projectors are also higher resolution than LCD (Liquid Crystal Display) projectors, because they are able to produce images with more pixels.

The innovative Digital Light Processing technology from Texas Instruments utilizes a real-time mirror system – a high-speed digital micro-mirror device to produce images. DLP stands for Digital Light Processing, which is a technology that allows the projector to accurately control the amount of light coming through the lamp; the brightness output is controlled by varying the power of the lamp instead of just turning it on or off like in an LCD projector. The DLP technology adopts a microscopic light engine which reflects a pattern of vertical and horizontal lines to the optical path.

Related article: How To Adjust Screen Resolution In Projector?: A Quick Fix Guide

What are the benefits of using DLP projectors?

  • Better image quality: DLP projectors offer higher resolution and sharper images. Moreover, they can reproduce bright, crisp images when used in a dark environment because they use less power than LCD projectors.
  • Longer lamp life: Since DLP projection technology uses mirrors rather than other technologies, the lamp life is longer, providing you with more years of light output (up to 30,000 hours).
  • Lower cost: New LED-based DLP projection systems have become very affordable.
  • Easier installation: DLP based projectors use simple plug-and-play Auto Iris facilities, which allows you to select a preset lens focus or adjust the focus manually.
  • Longer lamp life: Since DLP projection technology uses mirrors rather than other technologies, the lamp life is longer, providing you with more years of light output (up to 30,000 hours). – Lower cost: New LED-based DLP projection systems have become very affordable. – Easier installation: DLP based projectors use simple plug-and-play Auto Iris facilities, which allows you to select a preset lens focus or adjust the focus manually.

Relevant reading: How To Connect Projector To Laptop & Windows 7?- Explained

What are the benefits of using DLP in classrooms?

  • Better image quality: While DLP projectors have a lag time, they also have high resolutions. They will provide you with better images and higher resolutions than LCD projectors can produce.
  • Longer lamp life: Since DLP based projectors do not use a traditional liquid crystal technology like LCD projectors, it uses a more efficient light engine that uses less power while running longer than any of its predecessors.
  • Easier installation: DLP based projectors come with plug-and-play Auto Iris technology for the best image quality with auto focus and colour calibration.
  • Longer lamp life: Since DLP based projectors do not use a traditional liquid crystal technology like LCD projectors, it uses a more efficient light engine that uses less power while running longer than any of its predecessors. – Easier installation: DLP based projectors come with plug-and-play Auto Iris technology for the best image quality with auto focus and colour calibration.

Read here: How To Connect Laptop To Projector With HDMI: All You Need To Know

How dlp projector works

DLP projectors uses a combination of color filters to create an image on the screen. The light from each individual pixel is amplified and then modulated with the color. The projector does not need large amounts of black or white pixels in order to create an image, so they produce smooth, easy-to-view images at high speed.”

We will explain how DLP projectors work in detail, and give you a quick list of all options available for replacement screens. This includes budget projector screens with low resolution or those that are hard to find since they are only sold online as well as mid priced screens – which more often have higher resolutions and better resolution than budget ones.

Before we get to the details of the DLP projector, it is important for you to understand how a DLP projector works for you to decide which type of screen you may want to buy.

In general, DLP projectors use 3 DLP pixels or sub-pixels as a unit of measurement. There are three sub-pixels – one red, one green and one blue – that combine together to form each pixel on a projector. The technology is much like LCD display technology but instead of using a backlight LED or CCFL tubes, the light source and amplifier are combined into one small device (called an “integrated circuit”) in the projection unit itself.

If you are purchasing a screen for a DLP projector, it is highly recommended to check the resolution before making your purchase. The higher the resolution, the better it will look overall. The great thing about digital projectors is that they are continually getting better so in 2010 and 2011 newer models tend to have higher resolutions than older models.

Typically, budget screens start at 1024 *768 and those are available for under $30 if you shop around on the internet. If you need a cheaper screen – go for it! But if you want something that is larger or at higher resolution – be sure to shop around online since many retailers sell some of them at prices lower than what they offer in-store.

https://www.aliexpress.com is a great place to start comparing prices and make your own evaluation of what you want for your home theater.

In the next section, we will give you some details on those 3 DLP pixels mentioned above:

Related post: How To Connect Ipad To Projector?: Expert Tips

Single-Chip DLP Projectors vs 3-Chip DLP Projector

Single Chip projectors have one DLP chip that produces all three colors (not an RGB pixel or sub-pixel like LCD/LED/Plasma) on the screen at once. Single-chip projectors use a color wheel to see all three colors when one color is being used by the pixel, and the others are rotated into place in order to form the next pixel.

3-chip projectors work in a way that is similar to how LCDs work. Each pixel has one LED, and each LED has a separate color (RGB). A DLP chip with three RGB LEDs will be able to produce all 3 colors and see them at the same time.

Types of DLP Projectors

The type of projector determines which kind of screen you will need. There are several types of DLP projectors: DLP-M1 projector – the more popular model which has three different modules that can be connected together with a powered hub (called the “Illuminator”). This model features 720p stereo audio output and an LCOS panel size of 7 inches. This is by far the most popular model on the market.

DLP-SXGA projector – this model is able to produce 720p video resolution with 5,000:1 contrast ratio. It supports up to four content sources and it uses a 16 watt UHP lamp
DLP-XGA projector – this model of DLP projector is an upgrade from the SXGA-model, however details are not available since it is not yet released.
DLP-WXGA projector – this projector has a high quality WXGA panel and is able to create 1280 x 800 pixels in video resolution. The screen size is about 10 inches.
DLP-UXGA projector – this model is an upgrade of the SXGA model. The resolution increase comes from a 30% increase in horizontal and vertical pixel count.
DLP-XGA2 projector – this model has a high quality panel with the same 1280 x 800 pixels as the DLP-UXGA, but with an IPS type panel which has 178° viewing angle. It displays images at a resolution of 15 inches and uses only 7 watts of power.
DLP-SXG1 projector – this model has a significantly lower contrast ratio of 1000:1, only 4.2 inches in screen size and 14 watts of power.
DLP-LXGA projector – this model features a very similar technology to SXGA screen size with about the same pixels as the DLP-WXGA and slightly lower contrast ratio. However, it uses an LCD element instead of LEDs in order to get a larger picture with less noise and better color accuracy.
DLP-LXG1 projector – this is a lower quality model featuring an LCD (Liquid Crystal Display) panel with a little more than half the pixels of the LXGA and SXGA models, however it has a higher contrast ratio of 2500:1.
DLP-SXGA2 projector – this model uses a new SXGA panel that has a 15 percent increase in contrast ratio (2000:1) as well as 178° viewing angle up from 160°. It is also able to project 1280 x 800 pixels in resolution. It is worth noticing that it uses the same content source as all other DLP-SXGA models.
DLP-UXGA2 projector – this model has an IPS panel similar to the SXG1 and SXGA2 models. It has a higher contrast ratio of 2500:1 and offers a higher resolution of 17 inches. It uses 26 watts of power.
DLP-UWXGA projector – this model is similar to the SXGA3, but it uses a 16:9 aspect ratio instead of the usual 16:10 – therefore it looks like a 16:9 screen instead of effectively 4:3 when viewed from above or below. It has the same pixel count as all previous models in DLP-SXGA3 series and uses HDCP 2.2 technology.
DLP-LWXGA projector – this model features a DLP-SXGA3 panel with the same resolution of 1280 x 800 pixels and offers a contrast ratio of 1400:1. It uses 22 watts of power.
DLP-UXGA3 projector – this model features a SXGA panel with an increased screen area compared to previous models, 17 inch screen size and six times the energy efficiency compared to previous models. The contrast ratio is 2500:1 which also exceeds the contrast ratio in the SXGA3u, SXG2 and UG2 models. It uses HDCP 2.2 technology and offers a maximum resolution of 1920 x 1080 pixels. This projector is no longer produced since 2016
DLP-UXG1 projector – this model features a DLP-SXGA4 panel with the same resolution of 1280 x 800 pixels and offers a higher contrast ratio of 3600:1. It uses 23 watts of power.
DLP-XLWXGA projector – this model lets you have a large 16:9 aspect ratio screen with the same pixel configuration as in DLP-WXGA projectors, namely 1280 x 800 pixels, as well as HDMI inputs and 3D support.

 

You may also like:
Best Projector Below Rs. 10000 in India: Expert Tips
Best Portable Projectors in India: Buyer’s Guide 2021
Best 4k Projectors in India – Buyer’s Guide 2021
Best Projector for Home in India: Reviews & Buying Guide 2021

 

Go To Home Page

About The Author

Reply