So many Types Projector Screens

A projection screen is a large screen on which a moving image (video), the image is projected. The equipment consists of a screen and a support structure. The equipment is used to view enlarged images to the public. These screens are widely used in theaters and meeting rooms used. The screens are used in cinemas installed permanently on the projection screen. In addition, the screens in the conference rooms or semi-permanent mobile screens. 
Screens can be flat or curved tank. Straight or curved screens may be used, depending on the desired geometric accuracy, which are perpendicular and optics used for spraying. They are either built or vertically on the wall. Curved screens are widely installed in movie theaters.The surfaces of these image display devices are usually pure white, white or gray, to prevent discoloration. The brightness of the screen depending on a variety of variables, including the light power of the source of the image and the ambient light. 
Today's market offers a wide range of projection screens, such as:In front of the projector screen: This is one of the projection technique used most often. These devices are made of vinyl. These facilities are usually light gray or white. These views have opaque surfaces that do not allow that light to pass through them. These high-reflective devices are ideal for the display of two still images and moving images. These devices display image are very flexible, lightweight, sturdy and portable, and cost.


Rear projection screens: These images display materials are made from materials that allow light to pass through the. These devices are usually gray or black surfaces of the light. With this type of projection equipment is the projector image is placed behind the screen instead of the forehead. In addition, the distance between the screen and be dark. For a better picture quality of this device are used at night. These facilities are good for outdoor and indoor projection. 
Manual Screens: This material is used as storage. These devices can be crushed by hand and recoiled. These devices are usually mounted on the wall. These display units are available in two versions, tense and not tense. Equipment Non tense are very cheap. These screens are easily accessible by air flow, can move cause of the disturbances. The projection equipment is not suitable tense manual is ideal for interior area where the airflow is limited. 
Electric projection screens: These facilities have motorized drop and retraction. The screen is removed and raised by means of an electric motor. They are operated by remote control or wired switch. These devices are very similar to their manual counterparts. These devices are also available in versions tense and not tense available.