Field of view and angular-resolution enhancement in microlens array type virtual reality near-eye display using...

Area of Science:

• Optics
• Virtual Reality Technology
• Display Technology

Background:

• Microlens array-based near-eye displays are crucial for virtual reality (VR).
• Existing VR displays face a trade-off between field of view (FOV) and angular resolution.
• Enhancing both FOV and resolution is key to advancing immersive VR experiences.

Purpose of the Study:

• To propose a novel method for enhancing FOV and angular resolution in VR near-eye displays.
• To utilize a polarization grating to steer field angles based on polarization states.
• To overcome the limitations of current microlens array-based VR display technologies.

Main Methods:

• A polarization grating was integrated into a microlens array-based thin VR near-eye display system.
• The polarization grating steers the field angle according to specific polarization states.
• Optical experiments and Zemax simulations were conducted for validation.

Main Results:

• The field of view (FOV) was experimentally expanded from 58.8° to 95.17°.
• Angular resolution was experimentally improved by resolving images with orthogonal circular polarization states at a half-pixel offset.
• The proposed method effectively demonstrated simultaneous enhancement of FOV and angular resolution.

Conclusions:

• The novel polarization grating method significantly enhances both FOV and angular resolution in VR near-eye displays.
• This approach addresses the critical trade-off between FOV and resolution in VR display technology.
• The findings are expected to contribute substantially to the advancement of immersive virtual reality systems.