AR Eyewear Prescription Lens Retention Ring
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Solution Overview
Problem
Conventional AR eyewear displays require manufacturers to handle a wide range of prescription lens types, complicating the process and leading to delays in delivering AR experiences to users, as they must manage ingress protection, optical alignment, and aesthetic considerations.
Innovation Solution
The design allows for parties other than the eyewear display manufacturer, such as optometrists, to insert or replace prescription lenses by using a lens retention ring that can switch between open and closed states, enabling the integration of prescription lenses without compromising the device's functionality or aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the manufacturer handles all prescription lens types, then the device maintains high manufacturing precision and reliability, but the productivity and delivery time to users deteriorate
Solution Approach 1:
The prescription lens system is segmented into removable lens elements that can be independently handled. The lens assembly is divided into separate components that can be pre-manufactured with high precision by the manufacturer, then quickly exchanged by third parties or users, separating the precision manufacturing phase from the rapid deployment phase
Solution Approach 2:
The prescription lens is extracted as a separate, removable component from the AR device. This allows the lens to be fulfilled by specialized third-party providers rather than requiring the manufacturer to handle all lens types, thereby improving delivery speed while maintaining manufacturing quality through specialized providers
2Reliability
If the lens retention ring is always closed, then the device maintains high reliability and protection, but the ease of operation for lens insertion deteriorates
Solution Approach 1:
The lens retention ring transitions from a static structure to a dynamic one that can switch between open and closed states. The ring is designed to be deformable, allowing it to expand for lens insertion and contract for secure retention, thus providing both ease of operation and reliability at different times
Solution Approach 2:
The lens retention ring acts as an intermediary mechanism between the user's insertion action and the lens securing function. By introducing this intermediate deformable structure, the system mediates between the need for easy insertion (open state) and secure retention (closed state), allowing both requirements to be satisfied through its state transitions
Data Source
AI summary
An augmented reality (AR) or mixed reality (MR) eyewear display includes a frame with two lens rims. One of or both of the lens rims include eye-side lens installment features to remove or insert an eye-side lens into the lens rim. The lens rim includes a lens retention ring that extends around the lens rim between two ends of the lens retention ring positioned at a first side of the lens rim. The lens retention ring is configurable in an open state to remove or insert an eye-side lens in the first lens rim, and in a closed state to fix the eye-side lens in the first lens rim, wherein the two ends are farther apart from one another in the open state than in the closed state.