Six-Lens Optical Module with Alternating Refractive Powers
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Solution Overview
Problem
Traditional optical image capturing systems in portable electronic devices struggle to meet the demands for high image quality and increased light intake, particularly for micro filming and night vision, due to limitations in pixel density and lens design.
Innovation Solution
The implementation of a six-piece optical image capturing system with refractive power, utilizing convex and concave surfaces, and a reflective element to adjust the angle of incidence and correct optical distortions, enhancing light intake and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional four-lens or fifth-lens design is used, then device complexity is reduced, but light intake and image quality are insufficient for high pixel density requirements
Solution Approach 1:
The optical system is divided into six separate lens elements with alternating positive and negative refractive powers. Each lens element is independently designed with specific curvature radii and thicknesses to optimize light gathering while distributing optical corrections across multiple components. This segmentation allows achieving high light intake equivalent to larger aperture systems without requiring a single overly complex lens element.
Solution Approach 2:
The six-lens configuration serves multiple functions simultaneously: the first lens captures and focuses incoming light, the second lens corrects spherical aberration, the third lens provides additional focusing power, the fourth lens corrects chromatic aberration, the fifth lens fine-tunes focus, and the sixth lens corrects field curvature. This multi-functional design achieves comprehensive optical performance in a unified module suitable for portable devices.
2Illumination intensity
If aperture size is increased for micro filming and night view, then light intake improves, but device size and complexity increase
Solution Approach 1:
The system achieves enhanced light intake by optimizing multiple parameters of existing lens elements rather than simply increasing aperture size. Each lens element's curvature radii (R1-R12), thicknesses (TP1-TP6), and refractive powers are precisely adjusted to maximize light transmission efficiency. The alternating positive-negative refractive power configuration optimizes the optical path to gather more light within the same physical aperture dimensions.
Solution Approach 2:
The six lens elements are arranged in a compact nested configuration where each subsequent lens element is positioned within the optical path of the previous one. This nested arrangement allows the optical system to achieve the light-gathering capability of a larger aperture system while maintaining a compact overall form factor suitable for portable electronic devices.
3Manufacturing precision
If six-piece optical lens system is implemented, then light intake and image quality improve, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for each lens element to balance manufacturing feasibility with optical performance. The curvature radii are constrained within specific ratios (e.g., 0.05 < R1/R2 < 0.5, 0.5 < R3/R4 < 2.0), and thicknesses are optimized to be practical for manufacturing. These parameter constraints ensure that high-precision optical performance can be achieved without requiring extremely difficult manufacturing processes.
Solution Approach 2:
Each lens element is designed with locally optimized properties tailored to its specific function in the optical train. The first lens has specific curvature characteristics for initial light capture, the second lens has optimized aspheric surfaces for spherical aberration correction, and so on. This localized optimization of each element's quality characteristics allows the overall system to achieve high image quality while each individual component remains manufacturable with standard precision techniques.
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 configuration effectively increases light intake and improves image quality, enabling better performance in low-light conditions and maintaining a compact form factor suitable for portable devices.
Implementation Method 1
an optical image capturing system includes, in order from an object side to an image side, a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power, and a sixth lens with refractive power
Data Source
AI summary
A six-piece optical lens for capturing image and a six-piece optical module for capturing image are disclosed. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power; and at least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.