Molded Prism Light-Blocking Petals for Flare Reduction
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Solution Overview
Problem
The issue of unpredictable reflection and flare formation due to light folding in molded prisms used in camera modules of portable electronic devices is a challenge, necessitating improved light blocking solutions.
Innovation Solution
A molded prism design incorporating an optical body with a light path folding on a reflecting surface and a sheet shading element with a first light blocking structure, featuring a plurality of light blocking petals and a release structure, enhances light blocking and reduces flare formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light folding is implemented in the molded prism to achieve compact optical path, then the imaging function is improved, but unpredictable reflection and flare are caused
Solution Approach 1:
A light blocking structure is introduced as an intermediary element between the light path and the reflecting surface. This structure selectively blocks unwanted reflected light while allowing the desired light folding function to operate, thereby mediating between the imaging function and flare generation.
Solution Approach 2:
The harmful reflected light is extracted and blocked by the light blocking structure. The structure is positioned to intercept and prevent the unwanted light from reaching the image sensor, while the main light path continues to function normally through the folded optical design.
2Reliability
If a light blocking structure is added to reduce flare, then optical quality is improved, but device complexity increases
Solution Approach 1:
The light blocking structure is merged with the existing molded prism components. Instead of adding a completely separate element, the blocking function is integrated into the prism structure itself, combining multiple functions into a single component to minimize overall complexity.
Solution Approach 2:
The light blocking structure serves multiple functions: it blocks unwanted reflected light, maintains structural integrity of the prism, and can be integrated with the molding process. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in 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
The design ensures improved optical quality by minimizing flare and enhancing imaging quality through effective light blocking, while maintaining manufacturing stability and reducing assembly costs.
Implementation Method 1
The first periphery includes a plurality of light blocking petals, a number of the light blocking petals of the first periphery is between 14 and 250, and the light blocking petals are adjacent arranged. Each of the light blocking petals of the first periphery includes a tapered portion tapering towards a direction close to the light path, and the light blocking petals are covered inside the optical body.
Implementation Method 2
The optical body has a light path passing through the optical body, and includes a reflecting surface and a gate trace. The light path is folded on the reflecting surface.
Data Source
AI summary
A molded prism includes an optical body and a sheet shading element. The optical body has a light path passing through the optical body, and includes a reflecting surface and a gate trace. The sheet shading element is covered via the optical body, and the sheet shading element includes a first surface, a second surface and a first light blocking structure. The second surface is relative to the first surface, and the first light blocking structure includes a first periphery that is connected to the first surface and the second surface. The first periphery includes a plurality of light blocking petals, and the light blocking petals are adjacent arranged. Each of the light blocking petals of the first periphery includes a tapered portion tapering towards a direction close to the light path, and the light blocking petals are covered inside the optical body.