1. Flatness The surface flatness of the LED display should be within ±1mm to ensure that the displayed image is not distorted. Local bumps or recesses may cause the viewing angle of the display to appear dead angle. The quality of the flatness is mainly determined by the production process.
2, brightness and viewing angle indoor full color screen brightness should be above 800cd/m2, outdoor full color screen brightness should be above 1500cd/m2, in order to ensure the normal operation of the display, otherwise it will be too low because the brightness is too low The image displayed. The brightness is mainly determined by the quality of the LED die.
The size of the viewing angle directly determines the number of display audiences, so the bigger the better. The size of the viewing angle is primarily determined by the way the die is packaged.
3, white balance effect White balance effect is one of the most important indicators of the display. In color theory, when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, pure white will be displayed. If there is a slight deviation in the actual ratio, the deviation of white balance will occur. Generally, it should be noted whether white is blue or yellow. Green phenomenon. The quality of the white balance is mainly determined by the control system of the display, and the die also has an effect on the color reproduction.
4, the reductive color reproduction of the color refers to the reproduction of the color of the display, the color of the display screen should be consistent with the color of the source, so as to ensure the realism of the image.
5, with or without mosaic, dead point mosaic refers to the display on the display of the bright or often black small four squares, the module necrosis phenomenon, the main reason is that the quality of the connector used in the display is not off.
The dead point refers to a single point that is always bright or often black on the LED display. The number of dead points is mainly determined by the quality of the die.
6. There is no color block color block, which means that there is obvious color difference between adjacent modules. The color transition is based on the module. The phenomenon of color block is mainly caused by poor control system, gray level is not high, scanning Caused by lower frequency.
Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.
The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).
Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.
Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).
Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.
Industrial Sectional Door,Industrial Overhead Sectional Door,Industrial Warehouse Sectional Door,Industrial Garage Interior Sectional Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com