The entire manufacturing process of the rear projection screen includes screen design, mold making, tool making, raw material making, screen forming, quality inspection and size reduction. The material of the rear projection screen The optical rear projection screen is made of optical grade Acrylic resin, which is a kind of material that is easy to scratch. Once scratched, bright spots or black spots will be formed in the corresponding area of u200bu200bthe image. . If it is a large-area scratch on the rear projection screen, the scratched part may not be imaged. Measures to prevent damage to the rear projection screen During the entire transportation process of the rear projection screen, be sure to ensure that the packing box is intact, and handle it with care; it is strictly forbidden to press other heavy objects on the screen to prevent sharp corners of the objects from contusion or puncture. The surface of the rear projection screen; after the rear projection screen is unpacked, it must be lifted in the vertical direction during transportation. Lifting in the horizontal direction will easily cause the deformation of the acrylic resin material; all the work during the installation of the rear projection screen Personnel must wear non-slip, soft gloves, and remove as much as possible carry-on items such as rings, pens, watches, etc. Installation of rear projection screen 1. Considering the expansion coefficient of acrylic resin material, the error of rear projection screen size, and the convenience of rear projection screen installation, it is recommended that the size of the inner frame of the rear projection screen be larger than the actual size of the screen. Reserve 10-20 mm. 2. Since the manufacturer has a recommended value for the best image display area of u200bu200beach size rear projection screen, the requirements for the installation frame size of the rear projection screen will also vary due to the size of the screen. How to deal with the stains on the screen surface 1. Use an air gun or vacuum cleaner to remove the stains on the surface. If you do not have the appropriate tools, please use a clean and soft silk cloth to gently wipe; 2. If the screen is stained with oil that is difficult to wipe, Use a small silk cloth dipped in distilled water and glass cleaner containing Amonia (ammonia) to clean carefully. The amount of cleaner must be strictly controlled to prevent the cleaner from forming a large area of u200bu200bpenetration along the light path of the rear projection screen. 3. When wiping the lenticular lens (Lenticular Lens) on the front of the rear projection screen, follow its lines and perform the up and down sequence. 4. When wiping the Fresnel lens on the back of the rear projection screen, follow its lines and wipe in the direction of concentric circles. The use environment of the rear projection screen The optical rear projection screen is made of optical grade Acrylic (acrylic) resin. Normally, the size of the rear projection screen will expand by 1‰/m, and the relative humidity will be 60 When% increases to 100%, the size of the rear projection screen will expand by 2‰/m. When the temperature and relative humidity return to the original state, the size of the rear projection screen will gradually return to its original size.