Metal projector screen category: metal projection screen from the material is divided into: soft projection hard screen and projection screen; metal projection screen into reflective, transmissive types, reflective for being cast, transparent sound from the functional soft surface Material projection screen, rear projection transmissive for; being cast metal projection screen is divided into flat projection screen, curved screen. Flat screen gain is small, projection screen and projection paint compared to the larger viewing angle, ambient light must be weak; curved projection screen gain greater rigid metal projection screen, viewing angle is small, projection screen, ambient light can be strong But the projection screen is reflected in the direction of the incident light varies. Hard rear-projection screen consists of three parts: the diffusion plate, a Fresnel lens, a lenticular lens. Diffusion plate: a spreading agent is added in the propylene plate made with people's eyes to see the light of knot like effect. Fresnel lens: With the light concentrated direction to the people, reduce the brightness of the screen center and the surrounding poor role. Lenticular: with improved viewing angle effect. Double lens (Fresnel lens plus lenticular) making the screen brightness, sharpness can fill the entire screen, the screen with black stripe, you can block out the light scattering to produce high-quality, high-contrast images. Projection screen, Wuhan multimedia systems, acoustically transparent projection screen soft surface material provided by Wuhan Engineering Co., Ltd. Jiuhua video. Projection screen, Wuhan multimedia systems, acoustically transparent projection screen soft surface material is video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or image on the telephone, to obtain the latest information, contact: Mr. Lu.