Optical Imaging Lens Module Reducing Area Ratio
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Solution Overview
Problem
Current portable electronic devices face challenges in reducing the area ratio of optical imaging lens modules to screen size while maintaining the required shooting angle and imaging quality, especially in full-screen designs where a smaller lens front surface area is needed.
Innovation Solution
The optical imaging lens module design involves optimizing the lens barrel and lens elements with specific geometric and refractive parameters, such as varying surface angles, air gaps, and coatings, to reduce the area ratio and system length while maintaining a large field of view and improving manufacturing yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the lens front surface area is reduced to achieve full-screen design, then the area ratio of optical imaging lens module to screen is improved, but the shooting angle and field of view are reduced
Solution Approach 1:
The optical imaging lens is divided into multiple lens elements (first lens element, second lens element, third lens element, fourth lens element, fifth lens element, and sixth lens element) with different functions. Each lens element contributes differently to the overall optical performance, allowing the system to maintain a large field of view while reducing the front surface area through optimized individual element designs.
Solution Approach 2:
The patent employs asymmetric surface designs with varying angles of inclination at different regions of the lens elements. By controlling the angles of inclination of the object-side and image-side surfaces, the patent achieves three-dimensional optimization of light path control, maintaining wide field of view capability while reducing the frontal projection area of the lens module.
2Area of stationary object
If the lens barrel and lens elements are optimized to reduce area ratio, then the area ratio and system length are improved, but the imaging quality may be compromised
Solution Approach 1:
Different regions of each lens element are designed with different properties. The object-side and image-side surfaces have different angles of inclination in different regions, allowing local optimization of optical performance. This enables the lens to maintain high imaging quality across the entire field of view while achieving a compact form factor with reduced area ratio.
Solution Approach 2:
The patent optimizes multiple parameters including the angles of inclination of lens surfaces, air gaps between lens elements, and the overall arrangement of the optical system. By carefully controlling these parameters, the patent achieves a balance between compact size (reduced area ratio and system length) and high imaging quality.
3Productivity
If the lens design is simplified to improve assembly yield, then the manufacturing complexity is reduced, but the field of view and imaging performance are compromised
Solution Approach 1:
The optical system is segmented into six distinct lens elements, each with optimized functions. This segmentation allows for modular manufacturing and assembly, improving assembly yield while maintaining complex optical performance characteristics including large field of view capability.
Solution Approach 2:
The patent optimizes parameters such as air gaps between lens elements and surface angles to facilitate assembly while maintaining optical performance. The controlled angles of inclination and standardized element designs improve manufacturability and assembly yield without sacrificing field of view or imaging quality.
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
This design effectively reduces the area ratio of the optical imaging lens module to the screen, maintains a large field of view, and enhances imaging quality and assembly yield by controlling the convex and concave surface shapes and overall lens barrel design.
Implementation Method 1
The first lens element may include an optical effective portion and an optical ineffective portion surrounding the optical effective portion. The optical effective portion may include an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
Data Source
AI summary
An optical imaging lens module is provided. The optical imaging lens module may include a lens barrel and an optical imaging lens. The optical imaging lens may include a plurality of lens elements engaged with the lens barrel in an order from an object side to an image side along an optical axis. A first lens element is the lens element closest to the object side in the plurality of lens elements. The first lens element may include an optical effective portion and an optical ineffective portion surrounding the optical effective portion. The optical effective portion may include an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through. A border around the object-side surface may have an extension surface extending from the object side toward the image side.