Eyeglass Frame Shape Measurement Device with Tiltable Stylus
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Solution Overview
Problem
Existing eyeglass frame shape measurement devices face challenges in precision and complexity when measuring high curve frames, particularly with template holders that are not easily accessible or require additional housing, leading to increased costs and device enlargement.
Innovation Solution
An eyeglass frame shape measurement device with a user-friendly template holder that includes a tracing stylus shaft capable of tilting to contact the edge of the template, integrated into the eyeglass frame holding unit, allowing for precise measurement without additional housing and reducing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the template holder is kept in a place different from the measurement device, then the device structure is simplified, but the template holder may be missing or not immediately accessible during use
Solution Approach 1:
The template holder is nested within a housing portion of the measurement device, specifically utilizing the space between the first and second sliders. This allows the template holder to be stored within the device structure itself, making it immediately accessible during use while avoiding the need for separate external storage locations.
2Measurement precision
If the tracing stylus shaft is made tiltable to contact the template, then measurement precision is improved, but the device configuration becomes complicated and enlarged
Solution Approach 1:
The tracing stylus shaft is designed to serve dual functions: it can tilt to contact the rim groove during rim measurement, and it can contact the template edge during template measurement. This multi-functionality eliminates the need for separate tracing mechanisms for different measurement types, simplifying the overall device configuration while maintaining high measurement precision for both rim and template measurements.
3Measurement precision
If an exclusive tracing stylus shaft for template measurement is provided, then template measurement precision is improved, but the device becomes complicated and costs increase
Solution Approach 1:
The same tracing stylus shaft is used for both rim measurement and template measurement. During template measurement, the stylus shaft contacts the template edge directly, achieving precise template tracing without requiring a separate dedicated tracing mechanism. This universal approach reduces device complexity and costs while maintaining measurement precision.
Data Source
AI summary
An eyeglass frame shape measurement device includes: an eyeglass frame holding unit including a first slider and a second slider for holding an eyeglass frame; a rim measuring unit including a tracing stylus for a rim of the eyeglass frame, and detecting the movement position of the tracing stylus to measure a shape of the rim; a template holder configured to attach a template and a measurement object of a demo lens; a template measuring unit including a tracing stylus shaft configured to contact an edge of the measurement object attached to the template holder, for measuring radius vector information of the measurement object; and a housing portion provided to house the template holder and provided in one of the first slider and the second slider when measurement using the template measuring unit is not being performed.