Immersive Optical Projection for Wide-FOV Natural Depth Cues
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Solution Overview
Problem
Current virtual, augmented, and mixed reality systems fail to provide accurate depth perception, binocular parallax, large color space, and maximum field of view while maintaining motion synchronization and avoiding sensory conflicts, often resulting in motion sickness and inefficient data distribution.
Innovation Solution
An optical system that delivers stimulation to the millions of rod and cone receptors of the retina, enabling accurate vergence-accommodation reflex, stabilized images synchronized with the vestibulo-ocular reflex, and lifelike binocular disparities, with a large color space and physiological full field of view, using beam steering devices, adaptive reflectors, and eye tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a distant screen is used for projection, then the light beams are easy to focus by the human eye, but the field of view and peripheral vision are limited
Solution Approach 1:
The patent transitions from a traditional 2D distant screen to a 3D volumetric light field that fills the user's field of view. By projecting light rays that converge at specific depths in space rather than on a distant flat surface, the system expands the effective viewing area while maintaining natural eye focus through proper optical convergence.
Solution Approach 2:
The patent introduces optical elements (lenses, waveguides, or holographic optical elements) as intermediaries between the projection system and the user's eyes. These intermediaries manipulate light rays to create virtual images at appropriate depths, enabling both wide field of view and proper focal convergence without requiring the eyes to accommodate to a distant screen.
2Measurement precision
If 3D glasses are used to provide depth perception, then binocular disparity is achieved, but frame rate, brightness, and dynamic range are limited
Solution Approach 1:
The patent extracts the depth perception function from the 3D glasses medium and implements it directly through optical projection. By projecting separate images to each eye through dedicated optical paths or using autostereoscopic techniques, the system achieves binocular disparity without the filtering and brightness limitations imposed by 3D glass polarizers or beam splitters.
Solution Approach 2:
The patent creates a projection system that simultaneously provides wide field of view, accurate depth perception, high brightness, and full color gamut through a single optical pathway. The system integrates multiple functions (image projection, depth encoding, eye tracking, and focus control) into one unified platform rather than requiring separate 3D glasses components.
3Area of stationary object
If the screen is moved closer to increase field of view, then peripheral vision improves, but depth of focus remains constant and relaxed distant focus is lost
Solution Approach 1:
The patent implements dynamic focus control that adjusts the convergence point of light rays based on the displayed content's depth. By varying the optical power of intermediate elements or adjusting the projection geometry in real-time, the system maintains appropriate depth of focus across different virtual distances while preserving wide field of view through the close-proximity projection architecture.
4Device complexity
If uniform data distribution is used across the field of vision, then simplicity is maintained, but efficiency is reduced due to wasted bandwidth on low acuity peripheral vision
Solution Approach 1:
The patent implements variable data distribution that allocates higher resolution and bandwidth to the central foveal region where visual acuity is highest, and progressively reduces detail in peripheral regions matching the eye's natural sensitivity gradient. This creates locally optimized image quality that matches human visual perception characteristics, improving efficiency without requiring complex global redistribution algorithms.
Solution Approach 2:
The system uses eye tracking to dynamically identify the user's current foveal fixation point and automatically directs maximum data bandwidth and computational resources to that region. The projection system self-adjusts its data distribution pattern based on real-time eye position, ensuring efficient use of bandwidth by serving the user's actual visual needs rather than using fixed uniform distribution.
5Device complexity
If fixed gaze direction is assumed, then system complexity is reduced, but accuracy of visual targeting during head motion deteriorates
Solution Approach 1:
The patent implements eye tracking with feedback control that continuously monitors pupil position and corneal reflections to determine gaze direction. The system uses this feedback to dynamically adjust the projection content and orientation, ensuring that the virtual image remains properly aligned with the user's actual line of sight during head and eye movements, thereby maintaining high targeting accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves a faithful sense of stereopsis and physiological full field of view, reducing motion sickness and optimizing data distribution for enhanced immersion and realism.
Implementation Method 1
delivers stimulation to the millions of rod and cone receptors of the retina
Implementation Method 2
using beam steering devices, adaptive reflectors
Implementation Method 3
using beam steering devices, adaptive reflectors
Data Source
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Figure 4~6
AI summary
The present disclosure relates to a virtual reality system that provides a photoreceptor density limiting, wide angle, full spectrum, binocular vision, real optical depth of field, imaging system. In one head mounted version, the system utilizes a hybrid optical micromirror scanner that produces a modulated beam of light of variable divergence that can be steered with two degrees of freedom. This beam is subsequently reflected off a compound curved reflector and through additional optics to form a full depth of field image on the retina. A high performance first surface reflector can also be fashioned from an array of independently steerable optical elements thereby forming an adaptive optical surface that provides a wide, full depth of field image. In either case, a true depth of field is presented to the eye allowing for a natural crystalline lens accommodation response.