When it comes to projector screen purchase, we have to mention two concepts, one is called luminance coefficient and the other is viewing angle. Luminance coefficient means whether the projector screen can enhance the brightness of the screen projected by the projector. For example, if the projector screen can just reflect the light of the projector, then the luminance coefficient is 1 at this time; if the screen can be made brighter, the luminance coefficient is greater than 1, otherwise it is less than 1. The larger the value, the stronger the light-gathering ability of the screen, the smaller the worse.
As to viewing angle, in fact, we will also see this statement when watching a TV. For example, the viewing angle of a curved TV is smaller than that of a flat-screen TV. The same is true for the viewing angle of the projector screen. The larger the angle, the wider the viewing range. If the viewing angle is too small, the picture of the person viewed from the side will look gray.
The luminance coefficient and the viewing angle are inversely proportional to each other, which means that the greater the luminance coefficient, the smaller the viewing angle. This is because the total amount of light emitted from the projector is constant. If more light is gathered in the same direction, the brightness will naturally increase, but the light in other directions will also decrease, making the viewing angle smaller.
It can be said that for the projector screen, the luminance coefficient and the viewing angle are not available at the same time. If there are a large number of viewers at home, then the relationship between viewing angle and luminance coefficient must be controlled. If there are only 1-2 people watching at home, then the viewing angle is not so important. High luminance coefficient of projector screens can also be freely selected.
How to choose projector screen and what materials and types do you know?
As to viewing angle, in fact, we will also see this statement when watching a TV. For example, the viewing angle of a curved TV is smaller than that of a flat-screen TV. The same is true for the viewing angle of the projector screen. The larger the angle, the wider the viewing range. If the viewing angle is too small, the picture of the person viewed from the side will look gray.
The luminance coefficient and the viewing angle are inversely proportional to each other, which means that the greater the luminance coefficient, the smaller the viewing angle. This is because the total amount of light emitted from the projector is constant. If more light is gathered in the same direction, the brightness will naturally increase, but the light in other directions will also decrease, making the viewing angle smaller.
It can be said that for the projector screen, the luminance coefficient and the viewing angle are not available at the same time. If there are a large number of viewers at home, then the relationship between viewing angle and luminance coefficient must be controlled. If there are only 1-2 people watching at home, then the viewing angle is not so important. High luminance coefficient of projector screens can also be freely selected.
How to choose projector screen and what materials and types do you know?
How to choose projector screen and what materials and types do you know?
When buying projector screens, pays attention not only to the size of the screen, but also the material of the screen. We are usually familiar with five types of home projector screens, namely: white plastic, white fiberglass, gray fiberglass, glass bead and metal. White plastic projector...www.tvsbook.com
