Six-Lens Optical Assembly for Ultra-Wide IoT Imaging
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Solution Overview
Problem
Ultra-wide-angle lens modules in Internet of Things (IOT) devices suffer from low resolution and long height, limiting their flexibility and space occupancy, which affects high-quality image output and design adaptability.
Innovation Solution
An optical lens assembly comprising six lenses with specific refractive powers and configurations, including a first lens with negative power and a sixth lens with positive power, optimized by conditions such as 9.27<CRA/CA62<20.02 and 12.19 (mm*degree)<TDP2*HFOV/Fno<41.70 (mm*degree), to achieve miniaturization and ultra-wide angle with high resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If ultra-wide-angle lens modules are used in IOT devices, then wide field of view is achieved, but resolution is low and height is long
Solution Approach 1:
The optical lens assembly is divided into six individual lens elements (first lens to sixth lens) with alternating positive and negative refractive powers. Each lens element contributes to the overall optical function, allowing the system to achieve ultra-wide field of view while maintaining high resolution through the coordinated action of segmented optical components.
Solution Approach 2:
Different lens elements have different refractive powers and surface curvatures optimized for specific regions of the optical path. The first lens has negative refractive power with concave surfaces for wide angle, while subsequent lenses have positive power with convex surfaces for focusing, creating local quality variations that resolve the contradiction between wide field of view and resolution.
2Area of stationary object
If ultra-wide-angle lens modules are used in IOT devices, then wide field of view is achieved, but height is long occupying limited space
Solution Approach 1:
The optical lens assembly employs a compact arrangement where six lens elements are closely spaced along the optical axis with optimized thicknesses and air gaps. This dynamic optimization of the optical path allows achieving ultra-wide field of view (120 degrees or more) while minimizing the total height to 3.8mm, making the lens module adaptable to thin IOT devices.
Solution Approach 2:
Instead of increasing height to achieve wide field of view, the invention uses alternating positive and negative refractive power lens elements that bend light paths in multiple directions. This multi-dimensional light control approach achieves ultra-wide angle coverage while maintaining a flat, compact profile suitable for space-constrained IOT applications.
3Measurement precision
If six lens elements with specific configurations are used, then high resolution and ultra-wide angle are achieved, but device complexity increases
Solution Approach 1:
The patent combines multiple optical functions into a single integrated lens assembly where six lens elements work together as one unit. The alternating positive and negative refractive power elements are merged to simultaneously achieve ultra-wide field of view, high resolution, and compact height, reducing the need for separate optical components and simplifying the overall device structure.
Solution Approach 2:
The invention optimizes specific parameters of each lens element including refractive power, surface curvature radii, thickness, and air gap distances. By carefully controlling parameters such as the ratio of focal length to image height (0.25<|f/IMH|<0.45) and the alternating sign patterns of refractive powers, the system achieves high resolution and ultra-wide angle while maintaining manufacturable complexity.
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 solution enables a miniaturized optical lens assembly with ultra-wide angle and high resolution, optimizing lens configuration for improved image quality and flexibility in IOT devices.
Implementation Method 1
a first lens with negative refractive power... a second lens with positive refractive power... a third lens with negative refractive power... a fourth lens with positive refractive power... a fifth lens with positive refractive power... a sixth lens with positive refractive power
Data Source
AI summary
An optical lens assembly includes a stop, and includes, in order from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein an incident angle where a main light is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, a maximum optical effective radius of the image-side surface of the sixth lens is CA62, and the following conditions are satisfied: 9.27<CRA/CA62<20.02.