Collaborative optimization method of imaging consistency for near-eye display with dual focal planes and spatial...

Area of Science:

• Optics and Photonics
• Human-Computer Interaction
• Display Technology

Background:

• Vergence-accommodation conflict (VAC) limits immersion and comfort in near-eye displays.
• Dual focal plane display technology aims to mitigate VAC but faces challenges with image quality mismatch and system parallax.
• Existing solutions lack a systematic approach to optimize imaging consistency between focal planes.

Purpose of the Study:

• To propose and validate an innovative co-design optimization framework for imaging consistency in dual focal plane displays.
• To address image quality mismatch and system parallax inherent in spatially multiplexed multifocal near-eye displays.
• To enable the development of near-eye display devices with enhanced visual comfort.

Main Methods:

• Developed a generalized virtual image normalization model using data-driven affine transformations.
• Established comparison metrics for distortion consistency (direction, magnitude) and field curvature shape.
• Implemented a closed-loop optimization process with dynamic weight feedback to embed perceptual consistency into optical design.

Main Results:

• Successfully applied the framework to both compact monocular AR and large aperture biocular VR systems.
• Significantly improved distortion and field curvature consistency in dual focal plane systems.
• Reduced harmful parallax in a biocular system below the fusional vergence amplitude.

Conclusions:

• The proposed framework offers a rigorous, systematic, and scalable design methodology for multifocal near-eye displays.
• It effectively enhances imaging consistency, reduces VAC, and suppresses parallax.
• This work holds significant theoretical and engineering value for advancing high-visual-comfort near-eye display technology.