Simplified Beverage Machine Panel With Polarized Selection Marks
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Solution Overview
Problem
Existing beverage preparation machines face difficulties in user-friendly selection of parameter values, particularly in distinguishing selected marks from non-selected ones, which can lead to user confusion without increasing the device's cost.
Innovation Solution
A selection device with a fixed selection element and a mobile selection element, incorporating a light-sending layer, polarization layer, and polarization modifying layers that modify the visual aspect of selected marks by shifting the phase of polarized light, allowing clear differentiation of selected parameters through illumination or obscuration based on the position of the mobile selection element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple panel with marks and mobile selection element is used, then the device cost is reduced, but the visibility of selected marks deteriorates
Solution Approach 1:
The patent applies optical property changes by using polarization-modifying layers that alter the appearance of marks based on the position of the mobile selection element. When the mobile element is positioned over a mark, the polarization state changes, causing the mark to appear visually distinct (e.g., illuminated or obscured) without changing the physical structure or material cost significantly.
Solution Approach 2:
The patent changes the optical parameter (polarization state) of the marks dynamically based on the mobile selection element's position. By using polarization-modifying layers with specific optical axes, the visual appearance of marks changes from invisible to visible or from one color to another, providing clear selection indication without adding mechanical complexity or cost.
2Illumination intensity
If a sophisticated touchscreen HMI is used, then the visibility and user interface quality is improved, but the device cost increases
Solution Approach 1:
The patent replaces complex electronic touchscreen HMI systems with a simpler optical system using polarization layers and light-sending elements. This substitution maintains good visibility and user interface quality while significantly reducing device cost and complexity by using passive optical components instead of active electronic displays.
Solution Approach 2:
The patent introduces polarization-modifying layers as intermediary elements between the marks and the user's view. These layers act as mediators that control the visibility of marks based on the mobile selection element's position, providing a cost-effective alternative to direct electronic display while maintaining clear visual indication.
3Illumination intensity
If ambient light conditions vary, then the general visibility is maintained, but the distinction of selected marks becomes difficult
Solution Approach 1:
The patent uses polarization-based visual changes that create high contrast between selected and non-selected marks. The polarization-modifying layers cause selected marks to appear distinctly different (e.g., illuminated vs. obscured, or different brightness levels) regardless of ambient light conditions, ensuring the selection indication remains clear and unambiguous.
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
Enhances user-friendliness by clearly indicating selected parameter values without significantly increasing the device's cost, providing improved visibility of selected marks regardless of ambient luminosity.
Implementation Method 1
a polarization layer for polarizing said sent light
Implementation Method 2
at least one polarization modifying layer able to modify the polarization of the polarised light such that the visual aspect of a selected mark is modified... comprising at least a wave-plate for shifting the phase between two perpendicular components of the polarised light
Data Source
AI summary
A selection device (2) for a beverage preparation machine (1), comprises a fixed selection element (3) and a mobile selection element (4), the fixed selection element (3) comprising a set of marks (33) each corresponding to a parameter value, the mobile selection element (4) being movable in relation to the set of marks (33) for selecting a parameter value by positioning the mobile selection element (4) in visual association with a selected mark (33X). The selection device (2) further comprises a light-sending layer which is disposed in the fixed selection device (3), a polarization layer for polarizing said sent light, and at least one polarization modifying layer able to modify the polarization of the polarized light such that the visual aspect of a selected mark (33X) is modified when the mobile selection element (4) is positioned in visual association with the selected mark (33X), the polarization modifying layer being disposed in superposition relative to the polarization layer and relative to the selected mark (33X).