Rotating Slide Disc Module With Adjustable Axial Stop
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Solution Overview
Problem
Existing light signaling modules for motor vehicles require multiple projection lenses, leading to high manufacturing costs and limited performance due to lens size restrictions, and suffer from significant manufacturing and assembly tolerances that affect optical quality.
Innovation Solution
A luminous module with a fixed optical projection device and an adjustable stop mechanism that compensates for manufacturing and assembly tolerances, using an elastic force to maintain precise axial positioning of a rotating disc relative to the projection device, allowing for high optical quality and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple projection lenses are used in each micro-optical device, then image projection capability is improved, but manufacturing cost increases significantly
Solution Approach 1:
The patent combines multiple micro-optical devices with different masks onto a single rotating disc, allowing one fixed projection lens to serve multiple imaging functions. This merging approach eliminates the need for separate projection lenses for each mask, significantly reducing component count and manufacturing cost while maintaining the capability to project multiple distinct images.
Solution Approach 2:
The single projection lens is designed to work universally with multiple masks on the rotating disc, enabling one optical component to perform multiple imaging functions. This multi-functionality approach allows the system to project various luminous images (such as different lighting patterns or information displays) using the same projection lens, thereby reducing overall system cost.
2Ease of manufacture
If projection lenses are made smaller to reduce cost, then manufacturing cost decreases, but optical performance is limited
Solution Approach 1:
By merging multiple masks onto a single rotating disc and using one fixed projection lens, the patent allows the projection lens to be optimized for high optical performance without the constraint of needing multiple smaller lenses. This single lens can be manufactured with larger dimensions and higher precision, improving optical quality while reducing overall manufacturing cost.
3Ease of manufacture
If manufacturing and assembly tolerances are relaxed to reduce cost, then manufacturing cost decreases, but optical quality deteriorates due to positioning errors
Solution Approach 1:
The patent employs a pre-adjusted mechanical structure where the rotating disc and projection lens are positioned with precise mechanical tolerances built into the design. This preliminary mechanical precision compensates for variations in mask positioning, allowing the system to maintain high optical quality even when individual component tolerances are relaxed during manufacturing and assembly.
4Device complexity
If thermal expansion effects are not compensated to simplify design, then device complexity decreases, but defocusing and optical quality deteriorate
Solution Approach 1:
The patent incorporates thermal expansion compensation through the mechanical design of the rotating disc and projection lens mounting structure. The mechanical tolerances and elastic support are designed to accommodate thermal expansion and contraction of components, maintaining the axial positioning between the disc and projection lens within acceptable ranges across varying temperatures, thereby preventing defocusing and maintaining optical quality without complex active compensation systems.
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 solution enables selective projection of multiple luminous images with improved optical quality by minimizing manufacturing and thermal expansion effects, reducing relative axial positioning tolerances and defocusing issues.
Implementation Method 1
the disc is supported, by an elastic force along the axis of rotation, on an adjustable stop
Data Source
Figure 1~2
AI summary
The invention relates to a light module (2) comprising a light source (6); a disc (8) having a plurality of slides (8.1) capable of being arranged, selectively, by rotation of the disc about an axis of rotation opposite the light source (6); an optical projection device (10) configured to project an image of the slide (8.1) opposite said light source (6); wherein the optical projection device (10) is fixedly arranged opposite the light source (6); and the disc (8) bears on an adjustable stop (18) by an elastic force along the axis of rotation.