HUD Concave Mirror Rotation for Steering Wheel Adaptability

The patent applies the dynamics principle by making the housing rotatable relative to the vehicle dashboard, allowing the HUD device to adapt its orientation dynamically. The housing can be rotated by a specific angle to change the ray path configuration, enabling the same physical components to serve both right-hand and left-hand steering wheel vehicles without requiring different component arrangements. This dynamic adjustment resolves the contradiction by providing adaptability through motion rather than through complex reconfiguration of components.

The patent applies the universality principle by designing the housing rotation mechanism to serve multiple functions: it adjusts the ray path for different steering wheel configurations, positions the virtual image at appropriate locations for different driver seating positions, and accommodates various vehicle types. This single rotational degree of freedom performs multiple adjustment tasks that would otherwise require separate mechanisms, thereby improving adaptability while limiting the increase in overall device complexity.