Optical Lens Assembly Injection-Molded Light Shielding Structure
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Solution Overview
Problem
Miniaturization of optical lens modules results in structural strength issues and increased assembly time due to the difficulty in fabricating holders and the presence of light-shielding elements that hinder volume reduction, leading to inefficiencies and ghosting effects.
Innovation Solution
An optical lens assembly with an injection-molded structure that covers the optically ineffective zone of the lens body, produced by injection molding, enhancing structural strength and preventing stray light, while simplifying assembly and reducing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical lens module is miniaturized to reduce volume, then the volume is reduced, but the structural strength is impaired
Solution Approach 1:
The patent merges the light-shielding element and the holder into a single integrated structure. The holder includes a body portion that supports the optical lens and a light-shielding portion that extends from the body portion to block stray light. This integration eliminates the need for separate components, maintaining structural strength while achieving miniaturization and reducing the overall volume of the lens module.
2Volume of moving object
If the volume of components is decreased to achieve miniaturization, then the volume is reduced, but the assembling time increases
Solution Approach 1:
The light-shielding element and holder are merged into a single integrated component, reducing the number of parts that need to be assembled. This integration simplifies the assembly process and reduces assembling time while maintaining the light-shielding function.
Solution Approach 2:
The holder is designed to perform multiple functions: it supports the optical lens and simultaneously provides light-shielding functionality through its integrated light-shielding portion. This multi-functionality reduces the number of separate components needed, thereby reducing assembly complexity and time.
3Object-affected harmful factors
If a light-shielding element is added to prevent stray light, then the ghosting effect is avoided, but the overall assembling space cannot be effectively reduced
Solution Approach 1:
The light-shielding element is merged with the holder to form an integrated structure. The light-shielding portion extends from the body portion of the holder and is positioned to block stray light from reaching the optical lens. This integration eliminates the need for separate light-shielding components, effectively reducing the overall assembling space while maintaining the light-shielding function.
Solution Approach 2:
The light-shielding portion is strategically positioned at specific locations where stray light would interfere with the optical lens. By placing light-shielding features only where needed rather than using a complete surrounding structure, the design effectively blocks stray light while minimizing the overall volume and assembling space.
Data Source
AI summary
An optical lens assembly is produced by an injection molding process. The optical lens assembly includes a lens body and an injection-molded structure. The lens body includes a first lens surface and a second lens surface opposed to the first lens surface. The lens body is divided into an optically effective zone and an optically ineffective zone. The injection-molded structure has at least one gate land in response to the injection molding process. At least a portion of the optically ineffective zone of the lens body is covered by the injection-molded structure, and the injection-molded structure is assembled with and positioned by an external structure. Each of the first lens surface and the second lens surface is one of a multi-aperture lens surface, a lenticular lens surface, an aspheric lens surface and a flat lens surface.