THREE DIMENSIONAL VIRTUAL AND AUGMENTED REALITY DISPLAY SYSTEM

Smart overview of the Invention

Overview: The patent application describes a three-dimensional virtual and augmented reality display system designed to enhance depth perception. The system includes a selectively transparent projection device that projects images towards the viewer's eye. This device can become transparent when not projecting images, allowing for seamless integration of virtual elements into the real world.

Components: Key components of the system include an occlusion mask device and a zone plate diffraction patterning device. The occlusion mask selectively blocks light to create an occluding pattern that matches the projected image. The zone plate diffraction patterning device manipulates light through a selectable diffraction pattern, simulating various focal distances to enhance depth perception.

Technical Details: The system is controlled by a microprocessor that coordinates the projection of images, occlusion patterns, and diffraction pattern geometry. The projection device can be a liquid crystal or an organic light-emitting diode display. It may also include a high-speed mini-projector and a substrate-guided delay exit pupil expander to adjust image size and orientation.

Functionality: The system operates at a high refresh rate, allowing for smooth transitions and realistic depth perception. It can display up to 12 different diffraction patterns per frame, providing a layered depth experience. This system is designed to work with both eyes, offering a comprehensive 3D viewing experience by using separate imaging modules for each eye.

Applications: The described technology addresses limitations of conventional stereoscopic displays by incorporating accommodation cues, which are crucial for realistic depth perception. It enables users to perceive virtual objects with varying depths, enhancing the augmented reality experience by aligning virtual and real-world focal planes effectively.