Tintable Lens Attachment for AR Glasses Visibility Control
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Solution Overview
Problem
Wearable glass-type devices face issues with varying visibility of virtual images and the external world due to ambient brightness, with color-changing lenses potentially reducing external world visibility and restricting user activity.
Innovation Solution
An electronic device with a detachable and wirelessly powered color-changing lens that adjusts transmittance based on ambient brightness and the position of virtual images, allowing selective use and partial area adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transmittance is adjusted to be low to increase virtual image visibility, then virtual image visibility is improved, but user activity restriction increases
Solution Approach 1:
The lens is divided into multiple regions with different transmittance characteristics. A first region has a first transmittance value optimized for virtual image visibility, while a second region has a second transmittance value optimized for external world visibility. This segmentation allows each region to independently optimize its function without compromising the other.
Solution Approach 2:
The lens transmittance characteristics are made adjustable and reconfigurable. The optical properties of different regions can be dynamically changed based on usage requirements, allowing the lens to adapt between different states (e.g., prioritizing virtual image visibility vs. external world visibility) rather than being fixed in a single configuration.
2Illumination intensity
If a color-changing lens is attached to adjust transmittance, then virtual image visibility is improved, but device complexity increases
Solution Approach 1:
The lens frame is designed with a universal attachment mechanism that can accommodate different types of lenses (color-changing lenses, regular lenses, etc.). The same attachment structure serves multiple purposes: securing the lens, aligning it with the display region, and potentially adjusting its position. This multi-functionality reduces the need for separate components and simplifies the overall system.
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
Enhances visibility for both virtual images and the external world by optimizing lens transmittance, preventing contamination, and enabling flexible lens attachment.
Implementation Method 1
a photochromic type that adjusts the transmittance through a chemical action by ultraviolet (UV) without external power
Implementation Method 2
an electrochromic (EC) type that adjusts the transmittance by an electrical signal from an external power source
Implementation Method 3
at least one first transmission coil disposed adjacent to at least a portion of the at least one camera inside the lens frame
Data Source
AI summary
An electronic device is provided. The electronic device includes a first transparent member and a second transparent member where at least one visual object is displayed, a lens frame receiving at least a portion of the first transparent member and at least a portion of the second transparent member, the lens frame configured to: allow an external electronic device including at least one color-changeable lens to be attached thereto, and allow the at least one color-changeable lens to be aligned with at least one of the first transparent member or the second transparent member if the external electronic device is attached to the lens frame, one or more wearing members extending from the lens frame or coupled to the lens frame, at least one camera disposed in the lens frame and at least partially exposed to an outside through at least one hole formed in the lens frame, at least one first transmission coil disposed adjacent to at least a portion of the at least one camera inside the lens frame, and a power transmission circuit configured to transfer a current to the at least one first transmission coil.