Reflection Module Cover Portion for Flare Reduction
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Solution Overview
Problem
Camera modules in portable electronic devices face challenges in miniaturization due to the addition of features like automatic focus adjustment and optical image stabilizing, leading to increased thickness and potential image quality deterioration from flare phenomena.
Innovation Solution
A reflection module with a holder and a reflective member that includes an incident surface, reflective surface, and emitting surface, featuring cover portions and a light blocking layer to manage light and prevent flare, integrated into a camera module design with lenses and an image sensor, optimizing the optical path and reducing device thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a reflective member is added to change the light path, then the device thickness is reduced, but flare phenomenon occurs causing image quality deterioration
Solution Approach 1:
The patent extracts and removes the harmful reflected light paths by introducing a light blocking layer that selectively blocks stray light and flare while allowing the main optical path to remain unchanged. This separates the useful light transmission from the harmful reflections.
Solution Approach 2:
The light blocking layer acts as an intermediary element between the reflective member and the image sensor, mediating the light paths by blocking harmful reflections while permitting useful light to reach the sensor. This intermediary structure resolves the contradiction by filtering out only the problematic light paths.
2Reliability
If multiple lenses and reflective members are added to maintain camera functions, then image quality is maintained, but device thickness increases
Solution Approach 1:
The patent changes the optical path from a linear vertical arrangement to a folded path using the reflective member at an angle. This dimensional change in the light path allows the optical system to achieve the required track length while maintaining a compact vertical profile, thus reducing device thickness without compromising image quality.
3Length of moving object
If the camera module is miniaturized, then device thickness is reduced, but adding focus adjustment and image stabilizing functions becomes difficult
Solution Approach 1:
The patent combines multiple optical functions (focus adjustment and image stabilizing) with the reflective member structure. The reflective member serves both as a light path folding element and as a platform that can accommodate focus adjustment mechanisms and image stabilizing actuators, thereby integrating multiple functions into a compact unified structure.
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 effectively minimizes device thickness while maintaining image quality by managing light paths and preventing flare, enhancing the camera module's performance and reducing thickness constraints.
Implementation Method 1
a reflective member configured to change a path of light
Data Source
AI summary
A reflection module includes: a holder; and a reflective member mounted on the holder and including an incident surface, a reflective surface, and an emitting surface. The holder includes a cover portion covering a portion of the emitting surface. An area of the cover portion covering the emitting surface increases in a direction toward a lower portion of the emitting surface.