Curved-Housing Display for Readable Sterilization Feedback
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Solution Overview
Problem
Existing sterilization indicators, particularly biological and chemical indicators, face challenges in providing direct and reliable assessment of sterilization efficacy, with biological indicators requiring incubation and chemical indicators lacking immediate feedback, and user interfaces on LCD screens being difficult to read and clean.
Innovation Solution
An electronic device with a housing featuring a curved major surface and display elements mounted on a rigid printed circuit board, projecting light through varying opacity sections to provide clear, readable feedback on sterilization efficacy, using a compact design with a gasket and depressed sections to enhance illumination on the curved surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If LCD screens are used to display sterilization indicator status, then user interface functionality is provided, but the screens become difficult to read and clean due to depressions formed as separate components
Solution Approach 1:
The display elements are integrated directly into the housing structure, merging the display function with the housing component. This eliminates the separate LCD screen that created cleaning and readability issues, while maintaining the user interface functionality through light-emitting elements embedded in the housing.
2Manufacturing precision
If display elements are mounted on a rigid printed circuit board, then manufacturing precision is improved, but alignment challenges occur during manufacturing
Solution Approach 1:
The display system is segmented into individual light-emitting elements that can be independently positioned and aligned within the housing. This allows for precise placement of each display element directly in the housing structure, avoiding the alignment challenges of mounting an entire rigid circuit board while maintaining manufacturing precision through controlled positioning of discrete elements.
3Loss of information
If light is projected onto a curved major surface, then display visibility from distance is improved, but luminous flux must be limited to no greater than 50 lumens
Solution Approach 1:
The housing structure incorporates specific optical properties at different locations, with the curved major surface designed to distribute and redirect light from the display elements. This local optical design allows the limited luminous flux (≤50 lumens) to be effectively distributed across the curved surface, maintaining readability from distance while adhering to the luminous flux constraint.
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
The device offers a direct and reliable assessment of sterilization efficacy, with clear, readable feedback visible from a distance, and a compact, easy-to-clean design that maintains readability and functionality.
Implementation Method 1
a display element from the array of display elements is aligned with the second section such that light is transmitted through the second section and projected onto the curved major surface
Data Source
AI summary
The present disclosure is directed to an electronic device having a housing that includes a major side portion having a curved major surface and an inside major surface, the major side portion includes a first section and a second section each having different opacities. The electronic device can have a display having an array of display elements surface mounted on a rigid printed circuit board such that the array of display elements are planar, a display element from the array of display elements is aligned with the second section such that light is transmitted through the second section and projected onto the curved major surface.