Optical Lens Assembly Injection-Molded Structure Volume Reduction
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Solution Overview
Problem
Miniaturization of optical lens modules leads to 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, resulting in unsatisfactory assembling efficiency and ghosting effects.
Innovation Solution
An optical lens assembly featuring an injection-molded structure produced by injection-compression molding, which covers the optically ineffective zone of the lens body, enhancing structural strength and preventing stray light, thereby simplifying assembly and reducing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lens module is miniaturized to reduce volume, then the volume is reduced, but the structural strength of the holder is impaired and assembly time increases
Solution Approach 1:
The patent merges the holder structure with the light-shielding element into a single integrated component. The holder includes a light-shielding portion that forms part of its structure, eliminating the need for separate light-shielding elements. This integration maintains structural strength while reducing the number of components and overall volume of the lens module.
2Volume of moving object
If the lens module is miniaturized to reduce volume, then the volume is reduced, but the assembly time increases due to fabrication difficulty
Solution Approach 1:
The holder and light-shielding element are combined into a single integrated component, reducing the number of parts that need to be assembled. This integration simplifies the assembly process and reduces assembly time while maintaining the miniaturized volume of the lens module.
3Object-affected harmful factors
If a separate light-shielding element is added to prevent stray light, then the ghosting effect is reduced, but the overall assembling space cannot be effectively reduced
Solution Approach 1:
The light-shielding function is integrated into the holder structure through a light-shielding portion, eliminating the need for separate light-shielding elements. This integration prevents stray light and ghosting effects while reducing the overall assembling space and volume of the lens module.
Solution Approach 2:
The holder is designed to perform multiple functions: supporting the optical lens and blocking stray light. The light-shielding portion of the holder provides both structural support and optical shielding, reducing the need for additional components and minimizing the overall volume.
Data Source
AI summary
An optical lens assembly is produced by an injection-compression 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-compression 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, a flat lens surface and a freeform lens surface.