Occlusion-capable see-through display without the screen-door effect using a photochromic mask

Area of Science:

• Optics and Photonics
• Display Technology
• Augmented Reality

Background:

• Conventional occlusion-capable see-through displays suffer from limitations including form factor, narrow field of view, screen-door effect, and real scene diffraction.
• These issues hinder practical applications and user experience in augmented reality and related fields.

Purpose of the Study:

• To propose and demonstrate a novel occlusion-capable see-through display system that overcomes the limitations of conventional designs.
• To achieve a clear real scene view without pixel grid structures and diffraction artifacts.
• To reduce the form factor and improve the field of view.

Main Methods:

• The proposed system utilizes lens arrays and a photochromic plate.
• Occlusion masks are imaged onto the photochromic plate using near-ultraviolet (near-UV) light, modulating visible light transmittance.
• The integration of lens arrays helps in reducing the overall system form factor.

Main Results:

• The developed display provides a clear real scene view by avoiding a black matrix, thus eliminating the screen-door effect and pixel grid structure.
• Diffraction defects of the real scene are prevented, leading to a more natural visual experience.
• The use of lens arrays contributes to a reduced form factor compared to conventional systems.

Conclusions:

• The proposed occlusion-capable see-through display effectively addresses key limitations of existing technologies.
• This system offers a promising solution for enhanced augmented reality experiences with improved visual fidelity and a more compact design.