Sliding Eyeglass Frame for Vision Mode Switching
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Solution Overview
Problem
Conventional eyeglass frames require users to switch between near-sighted and far-sighted glasses by removing and repositioning them, leading to unnatural eye alignment and increased eyestrain, as existing solutions like bifocal glasses and invertible glasses fail to align the eye level correctly with the optical centers, causing misalignment and continued eyestrain.
Innovation Solution
An eyeglass frame design featuring a pair of temples, a connecting bar, a shaft, nose pads, holding frames, and a slider mechanism that allows the holding frames to vertically slide, enabling easy switching between different optical members like lenses or displays without altering the nose pad or temple position, ensuring the optical centers align with the user's eye level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bifocal glasses are used to allow looking at objects in different distances, then the user can switch between long-distance and short-distance vision, but the user must look downward at nearby objects causing unnatural eye direction and eyestrain
Solution Approach 1:
The eyeglass frame is divided into an upper frame portion and a lower frame portion that can be independently positioned. The lower frame portion can be vertically adjusted relative to the upper frame portion, allowing the lenses to be segmented into different vertical zones. This enables the optical centers to be positioned at different heights for different viewing distances, eliminating the need for downward eye direction.
2Adaptability or versatility
If invertible glasses are used to allow switching between long-distance and short-distance vision, then the user can change eye position relative to lenses, but the attachment portion position causes misalignment of eye level with optical centers
Solution Approach 1:
The lower frame portion is made dynamically adjustable relative to the upper frame portion through a vertical sliding mechanism. This dynamic adjustment allows the optical centers to be precisely positioned at the user's eye level for each vision mode, rather than relying on fixed attachment portions that cause misalignment.
3Adaptability or versatility
If multiple optical members are used for different vision purposes, then the user can switch between different types of lenses, but the user must remove and reposition eyeglasses causing inconvenience
Solution Approach 1:
Multiple optical members are segmented and integrated into different zones of the eyeglass frame. The upper frame portion holds one type of optical member while the lower frame portion holds another type. This segmentation allows both optical members to be used simultaneously in a single eyeglass frame, eliminating the need to remove and reposition eyeglasses when switching vision modes.
4Ease of operation
If the lower portion of each lens is moved closer to eye level for short-distance vision, then the user can look at objects with less downward displacement, but eyestrain is still easily caused due to remaining misalignment
Solution Approach 1:
The lower frame portion with its optical member is dynamically positioned to precisely align the optical center with the user's eye level. This dynamic positioning eliminates remaining misalignment that causes eyestrain, going beyond static adjustments that only reduce but do not eliminate the problem.
Data Source
AI summary
An eyeglass-shaped frame includes: a pair of temples; a connecting bar connecting ends of the pair of temples; a shaft hanging from a middle of the connecting bar; nose pads fixed to the shaft; a pair of holding frames holding vertically arranged optical members; a bridge connecting the pair of holding frames; and a slider allowing the holding frames to slide vertically in front of the connecting bar. The bridge is provided at a position lower than a center of the lower optical member of the holding frames. The holding frames are slidable for a distance at least corresponding to a distance between a center of an upper optical member and the center of the lower optical member.