Types of Projectors According to Your Needs – In addition to watching movies, projectors are also often used in offices, classrooms, showrooms, and many more. With so many applications for these devices, it is helpful to understand the different types of projectors and the types of lenses needed to make it easier to determine the best projector type for a given situation.
Referring to itstillworks.com, there are generally two types of projectors. Each of these types is DLP (Digital Light Processing) and LCD (Liquid Crystal Display). At the beginning of the projector was introduced, there was even a type of CRT (Cathode Ray Tube) used. It uses 3 tubes, each presenting a primary color.
Due to their large size, low light output, and frequent need to concatenate and align the projected image from each tube, the CRT type is no longer in common use.
Here we summarize the complete types of projectors:
LCD projectors work by utilizing a polarized mirror that passes through and only reflects specific colors of light. This causes each red, green, and blue channel to be separated and then converge back through the prism after passing through the LCD panel, which controls the intensity and saturation of each color.
DLP projectors are classified as 1 chip or chip. Each chip houses millions of mirrors that reflect light thousands of times every second. The 1-chip DLP projector can produce more than 16 million colors, while the 3-chip model can produce more than 35 trillion colors.
This allows the DLP projector to reproduce a more natural image. The density of each mirror in a chip makes it difficult to see the space separating the pixels and, in turn, creates a smoother and sharper image compared to LCD technology.
The brightness of the projector is specified in lumens. The higher the lumen value, the higher the potential brightness of the image. The use of the projector and its surroundings determines the type and brightness of the projector required.
When used in small rooms projecting on a small screen, LCDs or DLOs rated from 1,500 lumens to 3,000 lumens can be used with attractive results.
In large venues where larger screens are used or where ambient light can affect the image, a 3-chip DLP projector with a 10,000 lumen to 28,000-lumen rating should be used.
In addition to the type of light source, there is also the type of lens used. If the projector will be placed close to the screen, a short-throw lens model is recommended. A long-throw lens may be required if the projector is positioned at the back of a large room or arena away from the screen. The distance from the projector to the screen and the screen size must be taken into account.
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