Telescopic Projector Lens Dynamics for Variable Focus Patterns

The patent applies the dynamics principle by making the lens element movable rather than fixed. The lens element is driven by a driving mechanism that can adjust its position along the optical axis, enabling dynamic switching between focused (vivid) and defocused (blurred) projection states. This resolves the contradiction by allowing the system to adapt between different projection clarity levels while maintaining structural integrity.

The patent implements parameter changes by varying the lens element's position parameter along the optical axis. By controlling the distance between the lens element and the projection screen, the system can transition between different focal states, producing both clear and blurred patterns as needed. This parameter adjustment enables the projector to achieve versatility in projection effects while maintaining optical precision.

The patent introduces dynamic control mechanisms including a focusing electric machine and driving block that enable the lens element to move automatically. This adds complexity to the device structure but significantly enhances the visual experience by allowing seamless transitions between focused and defocused patterns, creating engaging festive effects that conventional static projectors cannot achieve.

The patent replaces manual mechanical adjustment with an automated electric driving system. The focusing electric machine and driving block constitute an electromechanical system that automatically controls lens element position, eliminating the need for manual intervention and enabling programmable projection patterns. This substitution increases device complexity but provides superior visual engagement and adaptability for festive applications.