What are LCD projectors?
LCD projectors are systems that display or project Information or video on the surface. LCD means a liquid crystal display, technology used to design images. They are technological descendants of overheads and sliding projectors, older systems that serve the same purpose. They are most often used to display images in presentations or lectures, but are also used in domestic theaters. Video signals
consist of three colors: red, green and blue. LCD projectors contain for each separate glass panel. Each panel consists of two glass plates with a layer of liquid crystal between them. When the charge is applied, the crystals open to block light or close. This opening and closing of pixels is what makes a picture.
These devices use dichroic mirrors to divide light from the input source to red, green and blue components. Each then passes through the corresponding panel where piXely form a picture. Thetri colors are then recharged in a prism before the lens projective. LCD projectors use separate panels for each color, as this results in better color saturation than using one panel for all three.
While all LCD projectors perform the same basic task, many different models are available and consumers should know what their projector will be used before selection. These devices are prices based on several factors, especially solutions. The highest resolution is worth money only for those who need to project fine details as accurately as possible. The correct amount of brightness, measured in lumens, depends on the conditions of the lighting on which the projector will be used as well as the size of the audience. Dark home cinema requires less brightness than a fully lit conference room.
Other factors when considering LCD projectors are portability, originList and input options. Those with higher resolution weigh more and are therefore less portable. Those who use multiple computers to perform presentations should consider a projector that is easily compatible with different systems. Projectors used to display movies at home theater should have video inputs for the best image quality.
LCD projectors are often compared with Digital Light Projectors (DLP). They use plates of circuits with thousands of small mirrors to project the image. Their main advantages over LCD projectors are smaller in size because they do not use multiple LCD panels, better color contrast and no effect of the pixeling effect that sometimes belongs to LCD. However, LCD projectors are still known for having better color saturation. In general, DLP is more popular for using domestic cinema.