Six-Lens Optical System for Compact Cameras
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Solution Overview
Problem
Conventional optical image capturing systems in portable electronic devices face challenges in admitting sufficient light and meeting advanced photography requirements, such as low light mode, due to their structural limitations, and the use of IR cut filters complicates the design of miniaturized surveillance cameras.
Innovation Solution
An optical image capturing system utilizing a combination of refractive powers and convex/concave surfaces of six lenses, along with specific material selection, to achieve a near-confocal effect between visible and infrared light wavelengths without the need for an IR cut filter, enhancing light admission and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional optical systems use four or five lenses structure, then the system structure is simple, but the amount of light admitted is insufficient and image quality cannot meet advanced photography requirements
Solution Approach 1:
The patent combines six lenses into a unified optical system where each lens contributes to both visible and infrared light transmission. The lenses are integrated with specific refractive powers and surface curvatures that simultaneously optimize performance across multiple wavelengths, thereby increasing light admission without proportionally increasing system complexity
Solution Approach 2:
The optical system is designed to perform multiple functions: it captures visible light for standard imaging and infrared light for thermal or night vision applications. The six lenses are configured with specific material properties and surface geometries that enable them to focus both visible and infrared wavelengths onto the same image sensor, eliminating the need for separate optical paths or additional components
2Reliability
If IR cut filter is added to achieve Day & Night function, then image fidelity is improved, but system space occupation increases and manufacturing cost rises
Solution Approach 1:
The patent extracts the infrared filtering function from a separate IR cut filter component and integrates it directly into the lens elements themselves. By incorporating infrared-absorbing materials or coatings within the lens structure, the system achieves Day & Night functionality without requiring additional discrete filter components, thereby reducing overall system volume
Solution Approach 2:
The optical filtering function is merged with the lens structure. The lenses are designed with specific material compositions or surface treatments that selectively transmit or block infrared wavelengths as part of their primary focusing function. This integration eliminates the need for separate IR cut filters while maintaining image fidelity across different lighting conditions
3Illumination intensity
If six lenses with specific refractive powers and surfaces are used, then light admission and image quality are improved, but manufacturing complexity increases
Solution Approach 1:
The patent specifies precise parameter ranges for each lens element, including refractive power, surface curvature radii, thickness, and material properties. By defining these parameters within optimized ranges, the design achieves high light transmission and image quality while allowing for standard manufacturing tolerances. The use of aspheric surfaces and specific glass types is balanced against manufacturability considerations
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 allows for improved image formation across visible and infrared spectrums, enabling high-quality imaging with increased light admission and reduced system size, suitable for miniaturized electronic devices and surveillance applications.
Implementation Method 1
An optical image capturing system includes, in the 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... All of the first lens to the fifth lens have refractive power
Implementation Method 2
utilize the combination of refractive powers, convex surfaces and concave surfaces of six lenses... to increase the amount of light admitted into the optical image capturing system
Data Source
AI summary
The invention discloses a six-piece optical lens for capturing image and a six-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises 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 and object side of each of the six lens is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.