Digital Micro-Mirror Device Heat Dissipation Structure

The heat dissipation system is segmented into two independent parts: a rear heat dissipation structure for cooling the back surface, and a front heat dissipation structure (including heat dissipation fins and heat dissipation holes in the DMD mask) for cooling the front surface. This segmentation allows independent optimization of heat dissipation for each surface, enabling the temperature difference to be controlled within safety standards while effectively reducing temperatures at both surfaces.

The heat dissipation approach transitions from a single-dimensional rear cooling system to a multi-dimensional heat dissipation system. The DMD mask is designed with heat dissipation holes that allow heat to escape from the front surface, creating a three-dimensional heat dissipation pathway. Additionally, heat dissipation fins extend outward to increase the heat dissipation surface area, effectively adding spatial dimensions to the heat dissipation process.

The patent converts the harmful heat generated by high-intensity illumination into a manageable thermal management problem. The DMD mask, which traditionally only blocks stray light, is redesigned to include heat dissipation holes that convert the mask into a dual-function component: it continues to block stray light while simultaneously serving as a heat dissipation structure. This allows the system to maintain high illumination intensity for quality projection while using the same optical path to facilitate heat escape.

The DMD mask is transformed from a single-function stray light blocking component into a multi-functional element that simultaneously performs optical isolation and thermal management. The heat dissipation fins attached to the mask further enhance this universality, allowing the same structural element to serve both optical and thermal functions, thereby enabling high illumination intensity operation without excessive temperature rise.