Interleaved VCSEL Emitter Array for Random Light Patterns

The patent applies local quality by creating two distinct types of emitters within the same array: functional VCSELs that emit light and degraded VCSELs that do not emit light. This is achieved by selectively degrading certain emitters through ion implantation or other methods, creating localized differences in emitter performance. The regular grid pattern maintains uniform spatial distribution, while local quality variations produce the random light pattern effect without requiring random physical emitter placement.

The patent changes the operational parameter of certain emitters from functional to non-functional through controlled degradation. By altering the degradation state of specific VCSELs in a regular array, the system transforms a uniform emitter array into one that produces random patterns. This parameter change approach allows maintaining the manufacturing simplicity of regular arrays while achieving the optical effects of random configurations.

The patent creates a universal emitter array platform with a regular grid configuration that can serve multiple applications. By controlling which emitters are degraded and to what extent, the same physical array structure can produce different random patterns suitable for various structured light applications. This multi-functionality is achieved through programmable emitter degradation patterns rather than manufacturing different physical configurations for each application.

The patent performs preliminary degradation of emitters during the manufacturing process itself, rather than requiring post-manufacturing configuration. By pre-determining which emitters will be degraded and applying degradation treatments accordingly, the system establishes the random pattern characteristics during production. This preliminary action simplifies later deployment and allows the same manufacturing line to produce different patterns by simply changing the degradation mask or pattern.