How does projector work

A CRT projector focuses on the image or video by its lenses to project it on screen. These images are processed with help of three separate colored red, green and blue CRT tubes.

CRT projectors are not portable as they are huge in size and heavy in weight. Their electricity consumption is also high because of three light guns.

At initial stage, it may be difficult and tricky to set up a CRT projector, but the users say that a CRT projectors have a brilliant and outstanding picture quality. People say that these projectors are nevertheless than newer technologies and are compatible with new improvement. The meaning of Liquid Crystal Display is approximately clear from its name. The word LCD resembles two states of matter, the liquid and the solid.

A Liquid Crystal Display uses liquid crystal to project an image or object. These types of display panel is generally used in computer, Laptops, TVs, portable video games and cell phones. DLP is used in both back and front projections. It is regular for back projection in TVs and also utilized in front projectors for units intended for organizations and classrooms.

A DLP comes in two noteworthy structures i. Digital Light Processing makes utilization of micro mirrors called a Digital Micro mirror Device to reflect light and shading onto a screen. These micro mirrors are situated in a semiconductor chip and are little. A projector is an optical gadget that projects a picture or moving images onto a surface, usually a projection screen. This technology is almost four decades old, and is still going strong.

LCD projectors have been on the market for about 40 years, and remain a popular choice today. You can expect to pay. How laser projectors work A laser projector uses laser beams to create images. In a LCD projector , the first panel displays the image, which is split up into its primary colors through a series of dichroic mirrors.

Each panel shines a different color; either red green or blue, and sends them the through the final LCD panel which bends the light depending on the level of electrical current. Working in unison, DMD chips use the mosaic effect to display one color on each mirror, which got there after being shone through through a rapidly spinning color wheel which alternates between all three.

Each mirror represents one pixel over 2 millions mirrors on a x projector, for example. Short for Liquid Crystal on Silicon, this technology is both the most expensive and most complex style of projector to manufacture. No matter how the image gets created in the projector, all three styles inevitably push light through a lens as the final part of its journey. This means you can use it to create larger images, but you need a lot of available distance between the screen or wall in order to get there.

Short-throw lenses are larger and create a shallow depth of field, which means you can replicate the same size image often from only half the distance as a long throw. Lastly there are ultra short-throw projectors. A beam of high-intensity light travels through thousands of shifting pixels in an LCD display instead of through a frame of translucent film.

And these projectors don't just use a single LCD display either -- they use three, which is why they're also called 3LCD projectors. The light splits into three hues, then travels through three LCDs before recombining in a prism to generate the crisp, colorful image projected on the screen.

Still sound like magic? Well, let's walk through the process at a slower pace, beginning with the lamp and ending on the big screen. So grab your popcorn. Settle back in your seat.

Turn off your phone and prepare to break some light. To understand how an LCD projector works, it's best to start at the beginning -- with a beam of light -- and end on the movie screen itself. Step two : Our beam of white light bounces off a group of mirrors that includes two dichroic mirrors , which are coated in a special film that reflects only a specified wavelength of light.

You know how a prism or a droplet of water breaks a beam of light into distinct wavelengths or a rainbow of colors? The same principle applies here, only each dichroic mirror breaks off a single specified wavelength. So the white light hits the mirrors, and each reflects a beam of colored light on through the projector: one red, one green and one blue.

Step three : The beams of red, green and blue light each pass through a liquid crystal display composed of thousands of tiny pixels.