Forehead Rest for Multifocal Eyeglass Positioning

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Solution Overview

Problem

Users of multifocal lens eyeglasses experience muscle fatigue due to the need to constantly adjust their head or reading material to achieve optimal lens power, leading to eye, neck, and shoulder strain, and existing devices do not allow for adjustable lens positioning without tools or special lenses.

Innovation Solution

A lightweight adjustable band with a support arm or hook that rests against the forehead, allowing the user to manually adjust the position of multifocal lens eyeglasses without tools, by altering the level and/or angle of the frames to achieve optimal lens power without neck strain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If users wear multifocal lens eyeglasses, then they can achieve optimal lens power for different viewing distances, but they experience muscle fatigue and neck strain due to the need to constantly adjust head position

Engineering Contradiction:

Improvelens power adaptabilityVSAvoidhead position adjustment

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent introduces a forehead rest as an intermediary device between the user's head and the eyeglasses. This forehead rest supports the weight of the eyeglasses, allowing the lenses to be positioned at optimal heights for different viewing distances without requiring the user to constantly adjust their head position, thereby reducing neck and shoulder strain while maintaining adaptability of lens power

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If existing eyeglass support devices are used to keep glasses stationary, then the glasses remain stable, but they do not allow adjustment of lens position relative to the eye

Engineering Contradiction:

Improveglasses stabilityVSAvoidlens position adjustment

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The forehead rest is designed with dynamic adjustability, allowing the user to modify the position of the eyeglasses supported by it. The device enables vertical adjustment of the glasses to change lens position relative to the eye, while maintaining stability during use. This dynamic capability allows adaptation to different viewing distances and activities

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If multifocal lens eyeglasses are used, then optimal lens power is achieved for different distances, but additional expensive single vision lenses are needed to avoid fatigue during specific activities

Engineering Contradiction:

Improvelens power for different distancesVSAvoidnumber of eyeglass pairs

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The forehead rest serves multiple functions: it supports the weight of multifocal lens eyeglasses, enables vertical adjustment of lens position, and reduces the need for additional single vision lens glasses. By providing adjustable lens positioning, a single pair of multifocal glasses can be used for various activities at different distances, eliminating the need to purchase multiple pairs of glasses

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9285606B1Device for positioning eyeglass frames

Publication Date: 2016.03.15 RAMSDELL ALICE H

AI summary

A head-mounted ergonomic device for users of multifocal lens eyeglasses that supports the multifocal lens eyeglass frames and allows the user to achieve optimal lens power by manually adjusting the device to alter the level and/or angle of the multifocal lens eyeglass frames.