Tintable Headlight Filter With Contact-Based Alignment Detection
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Solution Overview
Problem
Existing optical filters in spotlights are permanently installed and difficult to replace, limiting user convenience and alignment accuracy.
Innovation Solution
A detachable optical filter with tintable glass is attached to a headlight using clamping and/or magnetic connections, ensuring correct alignment through electrical contacts for power and alignment verification, allowing easy replacement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If optical filters are permanently installed in spotlight housing, then structural stability is improved, but ease of replacement deteriorates
Solution Approach 1:
The optical filter is separated from the spotlight housing into independent replaceable components. The filter can be detached and replaced without affecting the overall structure of the spotlight, resolving the contradiction between structural stability and ease of replacement.
Solution Approach 2:
The mounting system transitions from a fixed permanent installation to a dynamic removable connection. The filter can be easily attached and detached from the housing while maintaining stable operation during use, achieving both structural stability and ease of replacement.
2Stability of the object's composition
If optical filters are permanently installed in spotlight housing, then alignment stability is improved, but alignment precision deteriorates
Solution Approach 1:
Alignment marks and guide structures are pre-formed on both the filter and housing during manufacturing. These preliminary features ensure precise alignment when the filter is attached, eliminating the need for complex alignment procedures while maintaining stability.
Solution Approach 2:
Traditional mechanical alignment methods are replaced with optical or magnetic alignment systems. Sensors or magnetic indicators provide real-time feedback to ensure precise alignment, achieving high manufacturing precision while maintaining alignment stability during operation.
3Measurement precision
If multiple contacts are added to ensure correct alignment, then alignment accuracy is improved, but device complexity increases
Solution Approach 1:
Multiple alignment contacts are integrated into a single contact array or matrix structure. This merging approach maintains high alignment accuracy through multiple contact points while reducing the overall complexity by consolidating the contact system into a unified component.
Solution Approach 2:
The contact system serves multiple functions simultaneously: electrical connection, alignment verification, and mechanical positioning. This multi-functionality reduces the need for separate components, maintaining alignment accuracy while minimizing device complexity.
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 easy and accurate alignment of the filter on a headlight, simplifying replacement and ensuring consistent light transmission adjustment without additional power sources.
Implementation Method 1
an optical filter with a variably tintable or frosted glazing (also known as smart glass) which can be continuously transparent or opaque or colored
Implementation Method 2
The filter can be attached to the headlight housing, for example, by means of clamping and/or magnetic connections
Data Source
Figure 1
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AI summary
A filter with a tintable glazing (smart glass) whose light transmission can be changed by applying an electrical voltage, has a frame (2) to which the tintable glazing (4) is fixed, and at least four contacts (5a, 5b, 6a, 6b) provided on the frame (2), wherein the electrical voltage for changing the light transmission can be applied via at least two of the at least four contacts, and correct alignment of the filter when mounted on a headlight (8) can be detected via at least two other of the at least four contacts.