Multi-element Optical Lens for Stable Image Quality in Varying Media
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Solution Overview
Problem
Conventional image capture devices face challenges in maintaining stable image quality and ultra-wide field of view (FOV) when refractive indexes of the ambient medium change, leading to a reduction in modulation transfer function (MTF) and FOV.
Innovation Solution
The optical lens design comprises a combination of lenses with specific refractive powers, including negative and positive refractive powers, arranged in groups with plastic and glass materials, and aspherical surfaces to maintain or enhance FOV and image quality across varying environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional image capture devices are used in varying ambient media, then the device structure remains simple, but the field of view and modulation transfer function are weakened resulting in reduced image quality
Solution Approach 1:
The optical lens is divided into multiple lens groups (first lens group with negative refractive power, second lens group with positive refractive power, third lens group with negative refractive power) that can work together or independently. This segmentation allows the system to adapt to different ambient media by activating appropriate lens groups, maintaining stable image quality across varying refractive indexes.
Solution Approach 2:
The optical lens system is designed with multiple lens groups that provide universal functionality across different ambient media (air, water, ocean). The first lens group, second lens group, and third lens group can be combined in various configurations to maintain optimal performance whether the device is used in air or submerged in water, making the system universally adaptable.
2Reliability
If the optical lens uses multiple lens groups with different refractive powers, then the field of view and image quality are maintained or enhanced, but the device complexity increases
Solution Approach 1:
The optical lens combines multiple lens groups with different refractive powers (first lens group with negative power, second lens group with positive power, third lens group with negative power) into a single integrated system. This merging allows the complex optical system to function as a unified structure that maintains wide field of view and high modulation transfer function while managing the complexity through coordinated design of all lens groups.
Solution Approach 2:
The optical lens employs aspherical surfaces on multiple lens elements (including the first, second, third, fourth, fifth, sixth, seventh, and eighth lenses) to correct optical aberrations and maintain high image quality. The aspherical curvatures allow the complex multi-group system to achieve superior optical performance by eliminating spherical aberration and other distortions that would otherwise require even more complex correction mechanisms.
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 lens configuration ensures consistent high image quality and wide FOV by adapting to changes in the ambient medium, enabling stable performance in diverse environments such as air, ocean, or swimming pools.
Implementation Method 1
The optical lens from an object side to an image-forming side includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The second lens and the third lens have negative refractive powers. The fourth lens, the sixth lens, and the eighth lens have positive refractive powers.
Data Source
AI summary
An electronic device has an optical lens. The optical lens includes in order from an object side to an image-forming side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The second lens and the third lens have negative powers respectively, and the fourth lens, the sixth lens, and the eighth lens have positive powers respectively. The first lens is a plastic lens. The object-side surface of the first lens is a convex, surface and/or the image-side surface of the first lens is a concave surface. The sixth lens and the seventh lens are made into a doublet lens.