The optimal viewing distance for small-pitch LED screens needs to be calculated by considering factors such as pixel pitch and screen size. The key is to prevent pixelation while ensuring clarity. There are three common calculation methods:
I. Core Calculation Based on Pixel Pitch
1) The optimal viewing distance range is from pixel pitch (mm) multiplied by 1.3 to 3 meters (1300 to 3000mm). For example, for a P2 screen (2mm pixel pitch), 2 x 1.3 equals 2.6 meters to 2 x 3 equals 6 meters; for a P2.5 screen (2.5mm pixel pitch), 2.5 x 1.3 equals 3.25 meters to 2.5 x 3 equals 7.5 meters.
2) The minimum viewing distance is pixel pitch multiplied by 1.3 meters. Within this distance, a smooth image can still be displayed; closer, noticeable pixelation will appear.
II. Supplementary Calculation Based on Screen Size
1) The optimal distance for a full HD screen (1080P) is 2 to 3 times the screen diagonal.
2) The optimal viewing distance for ultra-high-definition screens (4K/8K) is 1.5 to 2.5 times the diagonal, as the higher pixel density allows for closer viewing.
III. Factors Affecting Real-World Scenarios
1) Regarding ambient brightness, a greater distance is needed in bright light environments to avoid glare interference; the distance can be appropriately shortened in low-light indoor environments.
2) In terms of application scenarios, the minimum distance is suitable for viewing text at close range in conference rooms, while the upper limit of the optimal range is suitable for viewing images on a large stage screen at a distance.
3) Regarding differences in visual acuity, nearsighted individuals need to shorten the distance by 10% to 20%, while farsighted individuals can appropriately extend the distance.
