Stacked Light Guide Display Layout for Stray Light Isolation

A light absorption module is introduced as an intermediary component between adjacent light guide plates. This module selectively absorbs stray light emitted from light sources, preventing it from scattering onto adjacent light guide plates. The light absorption module thus mediates between the light sources and light guide plates, eliminating the harmful scattering effect while preserving the intended optical patterns.

The harmful stray light is extracted and removed from the optical system by the light absorption module. Instead of allowing stray light to scatter and cause undesired illumination, the absorption module extracts this unwanted light energy and converts it to heat, leaving only the desired optical patterns to reach the light guide plates.

The light absorption module is implemented as a thin film or coating layer applied to the light guide plate or positioned between layers. This thin-film approach provides effective light absorption functionality while minimizing the additional thickness and structural complexity. The flexible implementation allows integration into existing multi-layer structures without requiring complete redesign.

The light absorption module serves multiple functions simultaneously: it absorbs stray light to prevent scattering, maintains the structural integrity of the stacked layers, and can be integrated with existing manufacturing processes. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.