Reflective Member With Wave-Shaped Light Blocking Portion
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Solution Overview
Problem
Camera modules in portable electronic devices face challenges in miniaturization while maintaining improved performance features like autofocusing and optical image stabilization, leading to potential image quality deterioration due to flare phenomena.
Innovation Solution
A reflective member with an incident surface, a reflective surface, and an exit surface, featuring a light blocking portion with a wave shape formed by convex and concave portions, which extends along the edges of the incident and exit surfaces to prevent flare by scattering and blocking unnecessary light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If camera modules include a plurality of lenses arranged in length or width direction with reflective members to enable miniaturization, then the thickness of portable electronic devices can be reduced, but image quality deteriorates due to flare phenomenon
Solution Approach 1:
The patent extracts and removes unnecessary light paths that cause flare by introducing light blocking portions at specific locations within the reflective member. These light blocking portions selectively block oblique incident light and reflected light that would otherwise cause flare, while allowing necessary light paths to pass through for normal imaging function.
Solution Approach 2:
The patent introduces light blocking portions as intermediary elements between the reflective surfaces and the optical path. These portions act as mediators that selectively intercept harmful light rays without disrupting the overall reflective function of the member, thereby preventing flare while maintaining imaging capability.
2Object-affected harmful factors
If light blocking portions are added to prevent flare, then image quality improves, but device complexity increases
Solution Approach 1:
The patent merges the light blocking function directly into the reflective member structure itself, rather than adding separate light blocking components. The light blocking portions are integrated as parts of the reflective member, combining multiple functions (reflection and light blocking) into a single unified structure, thereby preventing flare without significantly increasing overall device complexity.
Solution Approach 2:
The reflective member is designed to serve multiple functions simultaneously: it provides the primary reflective function for light path redirection while also incorporating light blocking portions that prevent flare. This multi-functional design eliminates the need for separate dedicated light blocking components, reducing overall device complexity while achieving flare prevention.
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 reflective member effectively prevents flare phenomena by scattering and blocking unnecessary light, thereby enhancing the image quality of camera modules in portable electronic devices while allowing for miniaturization and integration of advanced camera features.
Implementation Method 1
a light blocking portion that extends along an edge of at least one of the incident surface and the exit surface
Implementation Method 2
the light blocking portion comprises a wave shape that is formed by a plurality of convex portions and a plurality of concave portions
Implementation Method 3
a reflective surface from which the incident light is reflected
Data Source
AI summary
A reflective member is provided. The reflective member includes an incident surface on which light is incident, a reflective surface from which the incident light is reflected, an exit surface from which the light exits, and a light blocking portion that extends along an edge of at least one of the incident surface and the exit surface, wherein the light blocking portion includes a wave shape that is formed by a plurality of convex portions and a plurality of concave portions, and the wave shape has a plurality of wavelengths which respectively have sizes that change in an extension direction of the light blocking portion.