Folded Imaging Lens Assembly With Stray Light Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in developing imaging lens assembly modules for portable electronic devices is to enhance imaging quality while minimizing space and effectively managing stray light, which is not adequately addressed by existing technologies.
Innovation Solution
The implementation of a light path folding element with optical reflecting surfaces and a plastic assembling element featuring a protruding structure array that eliminates stray light, combined with a matte surface to reduce mechanical interference and enhance optical quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a light path folding element is used to reduce the volume of the imaging lens assembly, then the volume is reduced, but stray light is generated that degrades imaging quality
Solution Approach 1:
The patent applies this principle by using the protruding structures on the plastic assembling element to convert the harmful stray light generated by the light path folding element into beneficial reflected light. The protruding structures act as micro-reflectors that redirect stray light back toward the optical path, transforming the harmful effect into a beneficial one that actually improves imaging quality while maintaining the compact folded design
2Object-affected harmful factors
If a plastic assembling element is added to block stray light, then imaging quality is enhanced, but the device complexity increases
Solution Approach 1:
The patent merges the stray light blocking function with the existing plastic assembling element that holds the light path folding element. By adding protruding structures to the assembling element rather than creating a separate stray light blocking component, the patent combines multiple functions into a single element, reducing overall device complexity while still achieving effective stray light management
Solution Approach 2:
The patent applies local quality by creating protruding structures only in specific locations on the plastic assembling element where stray light reflection is needed. Rather than making the entire assembling element complex or adding a complete blocking structure, the protruding structures are strategically placed to address stray light issues locally at the most critical areas, maintaining simplicity while achieving the desired effect
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
This configuration reduces the volume of the imaging lens assembly, enhances imaging quality by effectively blocking stray light, and maintains stability during assembly, thereby improving the overall performance of the imaging system.
Implementation Method 1
the light path folding element has a light incident surface, a light exiting surface and at least one optical reflecting surface
Implementation Method 2
The second surface includes a protruding structure array, and the protruding structure array includes at least seven protruding structures arranged at equal intervals
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
An imaging lens assembly module includes an imaging lens assembly, a light path folding element and a plastic assembling element. The imaging lens assembly includes an optical lens element. The light path folding element has a light incident surface, a light exiting surface and an optical reflecting surface. The plastic assembling element includes an assembling surface, a first surface and a second surface. The assembling surface is physically contacted with the light path folding element. Both the first surface and the second surface are disposed towards the light path folding element, and the second surface and the first surface are disposed adjacent to each other. The second surface and the optical reflecting surface are correspondingly disposed. The second surface includes a protruding structure array, and the protruding structure array includes at least seven protruding structures arranged at equal intervals.