Layered Ophthalmic Lens for AR Vision Correction
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Solution Overview
Problem
Existing ophthalmic lenses for augmented reality glasses do not effectively correct both projected virtual images and ambient light, leading to suboptimal visual acuity for users with defective vision.
Innovation Solution
An ophthalmic lens design incorporating a waveguide with multiple compensation layers and outer layers of varying refractive powers, manufactured using 3D printing, to pre-compensate and correct both projected light and ambient light, ensuring clear perception of virtual and real surroundings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-layer ophthalmic lens is used for AR glasses, then the structure is simple and manufacturing is easier, but it cannot effectively correct both projected virtual images and ambient light for users with defective vision
Solution Approach 1:
The ophthalmic lens is segmented into multiple functional layers: a waveguide layer for projecting virtual images, a first compensation layer for correcting projection light, and a second compensation layer for correcting ambient light. Each layer has a specific refractive power and curvature designed to address different optical correction needs, enabling precise visual acuity correction for both virtual and real imagery simultaneously.
Solution Approach 2:
Different regions and layers of the lens are assigned different optical properties. The waveguide layer has high refractive index for efficient light coupling, the first compensation layer has refractive power optimized for projection light correction, and the second compensation layer has refractive power optimized for ambient light correction. This local differentiation of optical properties enables simultaneous correction of multiple light paths.
2Manufacturing precision
If multiple compensation layers with different refractive powers are integrated into the lens, then visual acuity correction for both projected and ambient light is improved, but the manufacturing process becomes more complex
Solution Approach 1:
Multiple functional layers (waveguide, first compensation layer, second compensation layer) are merged into a single integrated ophthalmic lens structure. The layers are combined using lamination or co-molding techniques, allowing the lens to be manufactured as one unified component rather than assembling separate elements, thereby simplifying the overall manufacturing process while maintaining precise optical correction.
Solution Approach 2:
The refractive indices, curvatures, and thicknesses of each layer are precisely controlled during manufacturing to achieve the desired optical correction. By adjusting these parameters during the molding or lamination process, the lens can be optimized for specific visual acuity requirements without requiring post-manufacturing adjustments or complex assembly steps.
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 lens effectively corrects defective vision for both projected virtual images and ambient light, allowing users to perceive virtual objects sharply and real surroundings clearly without additional aids.
Implementation Method 1
The waveguide (115) is formed to conduct and couple out projection light (117) in a direction toward the eye side (105) in order to display a virtual object
Implementation Method 2
The waveguide (115) is formed to conduct and couple out projection light (117)
Implementation Method 3
The first compensation layer (120) has a first refractive power... The second compensation layer (125) has a second refractive power... The first outer layer (130) has a third refractive power... The second outer layer (135) has a fourth refractive power
Data Source
AI summary
An ophthalmic lens for eyeglasses. The lens has an eye side, a surroundings side, a waveguide, a first compensation layer, a second compensation layer, a first outer layer, and a second outer layer. The waveguide is formed to conduct and couple out projection light in the direction of the eye side, in order to display a virtual object. The first compensation layer has a first refractive power, the second compensation layer has a second refractive power, the first outer layer has a third refractive power, and the second outer layer has a fourth refractive power.