The different types of projectors are able to offer four types of image resolution in order to display the images in different levels of clarity. This is important due to the variances in setting and audience. For example, people showing a film or presentation in a large theater will have different requirements from those showing a movie in the comfort of their own home. They allow you to adjust the sharpness, sizes, brightness, and color settings. Projectors have simple controls, and most will come with a remote control to make using them even easier.
In a projector, a bulb will shine its light through a prism, which then splits the light into different colors. These colors then travel through small LCD screens in the device, which then projects the colors, and thus the images, onto the screen so that the human eye can see them. The DLP devices are slightly more complex, as the light will shine through a spinning color wheel and then onto a chip. This chip features small mirrors – hundreds of thousands of them. The electrical impulses turn the mirrors on and off as needed, and this is what creates the image projected onto the screen.