ScreensIntroductionPurposeGeneral careRear projectionscreensThe success of a presentation is greatly dependent on your use of the correctscreen in a serviceable condition. In extreme circumstances, however, a lightcolor wall may have to suffice.A screen enlarges the image of a slide or transparency projected on it so thatit is legible to an audience. The two types of projection screens are the rearprojection, and the front projection screens. Rear projection screens aretranslucent: therefore, the projector is invisible to the audience as it projectsan image through the screen. Front projection screens are reflective andreflect the light image off the screen to the audience.Keep a screen clean and free of tears. Protect a screen from abuse and straychalk or pencil marks. Unless it is permanently freed, roll the screen up andstore it properly between use.Screens used in rear projection are found most often in permanent theatersetups. Many flag staffs have such facilities. Rear screen projection allowsthe production personnel behind the scenes mobility. It also decreasesaudience distraction created by the whirling of a projector motor. Most rearprojection screens have a matte surface. The image is projected directly onthe screen or reflected from large mirrors located behind and at a 45-degreeangle to the screen.FrontprojectionscreensMost front projection screens are the reflective type. The four types ofscreens used for front projection are the lenticular screen, the high gainaluminum screen, the beaded screen, and the matte screen. Select the type ofscreen most appropriate to the room dimensions and desired angle ofprojection. They may be portable units that roll or fold up for storage orpermanently freed to a ceiling or wall.LenticularscreensLenticular screens reflect light evenly including all room light and glare.They appear to have a striped, ribbed, rectangular, or diamond pattern, andthey have a coating that gives them an enameled, pearlescent, granular, orsmooth surface. Lenticular screens have a 70-degree width by 20-degreeheight angle of projection and are brighter than beaded and matte screens.Continued on next page5-24
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
