While various variants of PC monitors dominate households and are mostly used in domestic environments and offices, projectors come in where PC monitors are just not enough. A typical example is an office meeting during which one has to throw some quick slides to large conference hall. In such a case, a projector remains the most sought video technology of all time.
What are projectors?
Projectors, as the name suggest, project something. It deals with the image in one device and with the help of light, throws the image onto the screen or some other object. Most often you will come across one of the front view projectors.
These projectors shoot an image from the front and project it on to the screen. The distance at which it can project, usually varies and relies on the person setting the projector. Front view projector connected with the Windows operating system, using Microsoft Power point is one of the archaic thing to found since the time of the front view projectors came in.
How do projectors work?
So, how do these whole Projector technologies work though? Let’s see it.
Like any other technologies that have gone through changes over a period of time, projectors have experienced a lot of changes as well. The very first generation of projectors utilised the CRT technology of the time. Each of the colour used different CRT which projected the image on the screen. CRT projectors were great and were able to generate fantastic images but they were heavy, bulky and expensive.
As lights are able to pass through LCD (Liquid Crystal Display), LCD projectors became more popular for front projection. LCD projectors are quite cheap and light comparing to CRTs but of course, have its own pitfall. LCD projectors are not capable of generating pictures as good as CRTs.
A technology from Texas called Digital Light Processing (DLP) instruments utilises a single core process and array of tiny mirrors which help projecting the front-view image. This technology is a way different than the LCD technology. DLP projectors are capable of generating much softer image than the LCD projectors. With HD content like movies, it is not necessarily a bad thing. DLP projectors consume more electricity than LC D projectors but also a way lighter than LCDs.
Note that a display is a crucial part of a projector and its most intensely working part is a lamp. Lamps of projectors tend to generate so much heat that projectors are often equipped into fans in order to minimise this heat.