Spatial Focal Field Glasses Display for Simultaneous Multi-Distance Virtual Images
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Solution Overview
Problem
Current glasses displays cannot effectively present virtual images at different distances simultaneously, limiting their ability to provide an immersive visual experience due to restricted view angles and complex optical structures.
Innovation Solution
A spatial focal field type glasses display using a projection component with multiple units that project tiny elementary beams onto a crystalline lens, allowing light spots to overlap and change clarity based on the lens's focal length, creating a depth of field effect without additional optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If zooming lens scanning method is used to display virtual images at different distances, then the function of displaying virtual images at different distances is improved, but the structure becomes complicated and the images cannot be displayed simultaneously
Solution Approach 1:
The invention divides the display function into multiple independent projection units, each capable of projecting elementary beams to different positions on the crystalline lens. This segmentation allows simultaneous projection of multiple virtual images at different distances without requiring complex moving or variable-focus optical systems.
Solution Approach 2:
The invention utilizes the human eye's own crystalline lens as the focusing element. The crystalline lens naturally adjusts its focal length to focus light from different distances onto the retina, eliminating the need for complex external focusing mechanisms. The display system simply provides elementary beams that the eye's lens can focus independently.
2Ease of manufacture
If existing optical structures are used in glasses display, then the device can be manufactured, but the view angle is limited to around 50° and immersive visual experience is poor
Solution Approach 1:
The invention transitions from a single-plane display to a spatial focal field display by utilizing the third dimension (depth/focal distance). Multiple projection units create elementary beams that focus at different depths, forming a three-dimensional focal field that expands the view angle and provides immersive visual experience while maintaining manufacturability.
3Adaptability or versatility
If multiple projection units are used to project elementary beams, then virtual images at different distances can be displayed simultaneously, but the number of components increases
Solution Approach 1:
The invention merges multiple projection units into a single integrated optical system that shares common optical paths and structural support. The projection units are arranged to utilize the same crystalline lens and retina interface, reducing redundant components while maintaining the capability to display multiple virtual images at different distances simultaneously.
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
Enables the display of virtual images at different distances with a larger visual angle, providing a more immersive experience and integrating virtual images into the real environment, while maintaining a lightweight and thinner design suitable for frame or corneal contact lens applications.
Implementation Method 1
the crystalline lens is used to deflect the elementary beam. Each elementary beam forms a light spot on the retina, namely the light spot of a single elementary beam on the retina
Data Source
AI summary
A spatial focal field type glasses display product can present virtual images at different distances simultaneously. The product is a frame type glasses or corneal contact lens and comprises a projection component and a display control device. The projection component comprises a plurality of projection units, each projection unit projects a plurality of elementary beams. The elementary beams projected by the same projection unit diverge and do not intercept with each other. The elementary beams projected by different projection units intersect near the retina after passing through the crystalline lens. The intersection point is a cluster focus. All cluster focuses form a spatial focal field which envelop the retina. When the diopter of the crystalline lens changes, the spatial focal field displaces and deforms accordingly, so different cluster focuses fall on the retina to be seen clearly, while the other cluster focuses tend to disperse and cannot be seen clearly.