Dual-Camera Measurement for Prescription Safety Eyewear Fitting
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Solution Overview
Problem
Conventional methods for obtaining prescription safety eyewear are inconvenient and inefficient, requiring employees to obtain and submit reimbursement requests, and traditional measurement systems for personal protective equipment (PPE) are cumbersome, often needing templates that are inconvenient to use in the workplace.
Innovation Solution
A dual-camera apparatus and method that uses two spaced-apart digital cameras to measure object dimensions without a template, combined with a kiosk system for selecting and ordering prescription safety eyewear, allowing employees to conveniently measure and order eyewear at their workplace.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional single-camera measurement systems are used, then template-based measurement can be performed, but the process becomes cumbersome and inconvenient for workplace use
Solution Approach 1:
The patent removes the template from the measurement process entirely. Instead of requiring a physical template to be placed on the subject, the dual-camera system uses stereoscopic imaging to directly capture and measure body dimensions, eliminating the cumbersome template placement step while maintaining measurement accuracy
Solution Approach 2:
The patent replaces the mechanical template-based measurement system with an optical-digital dual-camera system. The mechanical process of placing and aligning a template is substituted by electronic image capture and processing, significantly improving ease of operation while reducing physical complexity
2Productivity
If employees obtain prescription eyewear through conventional reimbursement processes, then cost control is achieved, but administrative burden and time loss increase
Solution Approach 1:
The patent combines the measurement, prescription verification, and eyewear ordering processes into a single integrated kiosk system. Employees complete all steps in one visit without separate reimbursement procedures, dramatically improving productivity and eliminating time loss associated with multiple administrative steps
Solution Approach 2:
The kiosk system enables employees to independently complete the entire eyewear procurement process without administrative intervention. The system automatically handles measurement data, prescription verification, and ordering, allowing employees to obtain eyewear efficiently during work hours without losing personal time
3Measurement precision
If catalog ordering is used for prescription safety eyewear, then administrative processing is simplified, but fit and comfort requirements are not met
Solution Approach 1:
The patent applies different functions to different parts of the measurement system: the dual-camera apparatus captures high-precision stereoscopic images for accurate dimensional measurement, while the kiosk system handles prescription verification and ordering. This division allows precise local measurement without requiring complex overall system complexity
Solution Approach 2:
The patent replaces manual measurement methods with automated dual-camera stereoscopic imaging. The optical-digital system automatically captures and processes three-dimensional body measurements, achieving high measurement precision while keeping the actual measurement device relatively simple in construction
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
Enables efficient and convenient measurement of employee dimensions for PPE and prescription safety eyewear, reducing administrative burdens and ensuring compliance with company standards, while allowing employees to order eyewear at their convenience.
Implementation Method 1
The first known distance and the established ratio provide a trigonometric basis for ascertaining distances between at least two features on the object
Data Source
AI summary
A dual-camera apparatus derives dimensional measurements of an object. The apparatus comprises a pair of digital cameras each comprising a lens and capable of producing an image of the object. A ratio of known distance units to pixels is established for the apparatus and applied to images generated by each of the digital cameras. The lenses are spaced apart at a first known distance. In operation, the first known distance and the established ratio provide a trigonometric basis for ascertaining distances between at least two features on the object. A calibration template can be used to establish the ratio of known distance units to pixels. The object can be a human subject, and the at least two features can be associated with the human subject's eyes, the human subject's feet, and/or other human body parts. The disclosure also relates to a method in aiding in lens selection.