Six-Lens Camera Optics With Plastic Aspheres for Slim Modules
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Solution Overview
Problem
There is a challenge in achieving high-resolution and high-performance camera modules in miniaturized mobile communications terminals due to the trend towards smaller and lighter designs, which limits the use of traditional glass lenses.
Innovation Solution
An optical system comprising six lenses with specific configurations, including convex and concave surfaces, aspherical shapes, and varying refractive powers, optimized to achieve improved aberration correction and a slim design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional glass lenses are used to achieve high resolution and performance, then optical quality is improved, but device weight and size increase
Solution Approach 1:
The patent changes the material parameter from glass to plastic, which has different optical and physical properties. This material substitution allows the lens to achieve the required optical resolution while significantly reducing weight and size, resolving the contradiction between optical quality and device miniaturization
Solution Approach 2:
The patent employs plastic as a composite material alternative to traditional glass. This material choice enables the lens to maintain optical performance requirements while achieving weight reduction and miniaturization goals for mobile communication terminals
2Manufacturing precision
If the number of lenses is increased to five or more to achieve high resolution, then optical performance is improved, but device complexity and size increase
Solution Approach 1:
The patent applies local quality by giving each lens element specific optical characteristics (positive or negative refractive power, convex or concave surfaces) that are optimized for its position in the sequence. This allows five lenses to work together efficiently to achieve high resolution without unnecessary complexity
Solution Approach 2:
The patent segments the optical system into five distinct lens elements with specific configurations. Each lens is designed with particular surface shapes and refractive powers to correct specific aberrations, allowing the system to achieve high resolution through coordinated function of multiple specialized components
3Manufacturing precision
If lens surfaces are made with specific curvatures and shapes to correct aberrations, then optical quality is improved, but manufacturing difficulty increases
Solution Approach 1:
The patent specifies precise curvature parameters for each lens surface (e.g., r1=7.347mm, r2=−3.972mm, etc.) that optimize aberration correction. These parameter choices balance optical performance with manufacturability, allowing complex surface shapes to be produced using standard molding techniques for plastic lenses
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 optical system enhances optical performance, provides a wide field of view, and increases manufacturing yield by reducing lens sensitivity, thus addressing the limitations of miniaturization while maintaining high resolution and performance.
Implementation Method 1
a first lens having a positive refractive power and an object-side surface that is convex; a second lens having a positive refractive power and an image-side surface that is convex; a third lens having a negative refractive power, an object-side surface that is convex, and an image-side surface that is concave
Data Source
AI summary
An optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens includes an object-side surface that is convex with a meniscus shape. The second lens includes an image-side surface that is convex. The third lens includes an image-side surface that is concave. The fifth lens includes an image-side surface that is concave. The first to sixth lenses are sequentially disposed from an object side to an image side.