All high-quality light boxes use some sort of diffusion process to transmit light from the edges (bulbs) to the center, in order to achieve even lighting across the panel. This concept of diffusing light away from the light source resolves the traditional light box issue of having "hot spots" and "shadows" where the fluorescent bulbs were (or were not). If the light box has an efficient diffusion pattern, it will either have an even glow across the viewing area, or one that is slightly brighter in the center. Consumers should be aware of fake patterns. We have seen countless manufacturers that take short cuts, or print and engrave patterns that do nothing to transmit or diffuse the light in any way. Below are some things to look for.

Examples of real light diffusing patterns: A printed diffusion pattern is farther spaced out at the edges (closest to the bulbs) and is tighter at the center where more surface area needs to get light. Engraved patterns are spaced closer together at the edge.

Examples of fake light diffusing patterns that do not achieve the goal. Notice the uniformity of the patterns; these do nothing to transmit or diffuse the light in any logical manner. These are just grids or patterns put on the acrylic to fool the consumer into thinking it is a technically advanced light box.