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Three Things You Want To Know About Home Projectors

Date Added: July 22, 2018 08:20:10 AM
Author: Lorenzo Gaskin
Category: Computers & Internet: Mobile Computing
Home Projector Introduction By definition, a home projector is an optical device which protrudes a picture (or moving images) onto a surface, commonly called a projector screen. The image must be polished via a sealed tube or framework when passing through the lenses (one concave and one convex - to focus the image and then magnify it out to the screen). Home projectors was only for the weekends when going to the movies. But that's changed and now they are everywhere. From the theaters, to the office, in religious households, educational institutions, entertainment halls and at the comfort of our own home. So, with all their functionality, how many projectors are there and what do they do? 1. Types of Home Projectors There are two common types of projectors and they comprise DLP (Digital Light Processing) and LCD (Liquid Crystal Display). At first, there only used to be CRT (Cathode Ray Tube) projectors that used only 3 tubes for each primary color. DLP The images projected on the home theater projector screen from the projector are formed from the projection source utilizing reflective technology called Digital Light Processing. I) Single Chip DLP -- The DLP processing board uses a DMD (Digital Micro-mirror Device) that functions as a light switch. Inside each DMD chip are lots of tiny mirrors which make up one pixel of light on the image projected. The miniature mirrors tilt towards, or away from the light source thousands of times a second to produce up to 1,024 shades of gray. In a single-chip DLP system, a color wheel is added to convert the monochrome picture into colour. After the color wheel spins, it causes the red, green and blue light to fall in a sequence onto the DMD chip. Through this method, a billion colours are made. Ii) Three-Chip DLP -- within this particular system, white light is passed through a prism that divides the light into red, blue and green. Each chip is therefore dedicated to a primary color. The red, green and blue reflections from the 3 processors are combined and passed through the lens to project an image composed of more than 35 trillion colors. LCD Instead of DLP technology where light is reflected from DMDs, LCD technology passes light through a polysilicon LCD channel and is therefore regarded as a transmissive technology. LCD vs. DLP For more than two decades, 3LCD has been the trusted projection technology. Using special optics, it divides light into three beams of light. Red, blue and green passes through 3 liquid displays and are eventually projected onto the screen simultaneously. It ends in ultra-fine, vibrant and stunning images. In contrast, the one chip DLP projector uses a quick spinning color wheel which divides the lamp light into short bursts of color. It displays colors only sequentially which results in color breakup and compromising the smoothness of gradation and tone on the image quality. The 3LCD projector has colour light output equal to white light output such that colors appear bright, balanced and attractive. The DLP however, has colour light output which is significantly lower compared to white light. Therefore, the dull and dim colours. 2. Home Theater Projector Sizes A) Pico Projectors -- A pocket projector, also called a Pico Projector, is a small hardware device built to behave as a normal projector by showcasing material from a smartphone, camera, tablet, laptop or memory device onto a wall or any substantial flat surface. They are battery-charged and mobile with an ability of displaying up to 150 inches of screen size, making them the best alternative to your normal bulky projector B) Pico Pocket Projectors -- while Pico projectors weigh just under 3 lbs, Pico Pocket Projectors weigh as low as half a pound. The Issue is that Pocket and other small LED projectors are wrongly called Pico projectors C) Projector Screen -- these are the biggest concerning size and are frequently seen in movie theaters, in the backyard of our houses or in the huge rooms depending on the size of your household. Projector displays work best with the room size, ambient light and luminosity. D) 4K Projectors -- these are the newest revolutionary projectors that display picture qualities of up to 4K resolution, double the size of 1080P. 3. Benefits of Home Projectors A) Cheap -- compared to LCD flat screen TVs, home projectors are much much frugal and affordable to buy. They are alluring to the eyes and often times give the impression that you are rich but in real sense you didn't spend a lot of money buying it. B) Fun Factor -- a home theater projector will set out the fun that you need with all your family members.
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