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Projectors can be classified by the technology used to project the content. Projectors can be used in colleges, at home as a home theatre as well as to play games. An impressive big screen can be used to entertain your guests as well as to make the visual more appealing. Large screens at sanctuaries and church projectors with more Lumens are used to show content to a large gathering. There are also gaming projectors available specifically for gaming purposes.
This article is going to talk about the different kinds of projectors and the pros and cons of each.
What does DLP mean? DLP means Digital Light Processing.
A DLP Projector uses the technology of Digital Light Processing. In layman terms, there is a chip called the DMD or the digital micro-mirror device which consists of more than two million tinier mirrors. These tiny mirrors can move towards or away from the light source, to direct the light towards an image. It also consists of a spinning color wheel which delivers color and projects it on the screen. The light source used is LED or lamp. DLP projectors with the LED technology is easier to handle because the lamp need not be replaced, saving both time and money.
This kind of projectors is mainly used in classrooms and schools and colleges. They are less expensive compared to the other technologies and are often used as home theater projectors.
Advantages and Disadvantages of DLP Projectors
Rainbow effect: The chromatic wheel or the transparent colored disk which turns in front of the lamp is divided into several primary colors, and at the end, it reconstitutes all colors to give the final color. These primary colors are positioned like the slices of pie, and there are several segments – 3 segments, four segments, six segments or even eight segments. The lesser the number of segments, the disk turns less rapidly, and the human eye can perceive the colors better by breaking it down. Thus, sometimes what you see is like a rainbow, especially the portion of the image which is lighter in color.
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LCD ProjectorsA technical difference, a projector is called an LCD projector if it used the technology of liquid crystal display.
There are two types of LCD projectors. A 3-chip LCD projector as well as a single chip LCD projector.
The LCD which contains three separate glass panels – one for red, green and blue components of the image that is being sent to the projector. As the light passes through the panel, individual pixels open and close to allow light to pass or close to block the light depending on the image.
There is another type of LCD, called 3LCD.
What is 3LCD? This modulating action by three separate glass panels is called 3 LCD.
LCD Projectors have the following features:
- LCD Projectors are less expensive
- LCD Projectors have no moving parts
- LCD Projectors with a single chip work well with customers on a budget
- LCD Projectors with 3-chip have better color saturation and lower noise levels
- LCD Projectors are good for watching movies
- LCD Projectors require constant filter maintenance and produce less contrast output
LED ProjectorsWhat is LED technology?
An LED is nothing but a light emitting diode. It is two lead semiconductor source of light. LED’s are solid state devices that convert electric energy directly into the light of a single color.
An LED projector has the following features:
- The LED’s in the projector have a lifespan of over 20000 hours
- LED projectors have negligible maintenance cost
- LED projectors have lower power consumption
- LED projectors have better colors
Raymond is a Product Support Specialist at Canon USA. He mainly deals with the projectors. He completed graduation in Computer Science from Broome Community College. He is a former Performance Improvement Specialist of Jewish Home Lifecare. He conducted a lot of webinar as a guest speaker.