Five-Lens Optical System with Inflection Points for Compact Imaging
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Solution Overview
Problem
Conventional optical systems in portable electronic devices face challenges in capturing high-quality images in low-light environments due to limited light intake and difficulty in designing systems that can effectively handle both visible and infrared light simultaneously.
Innovation Solution
The optical image capturing system employs a combination of five-piece optical lenses with specific refractive powers, convex and concave surfaces, and inflection points to adjust incident angles and modify optical paths, enhancing light intake and image quality, while also correcting aberrations and reducing system size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture is increased to capture more light in low-light environments, then the light intake is improved, but the system size increases
Solution Approach 1:
The optical system is divided into five separate lens elements with different refractive powers and surface configurations. Each lens element contributes to light gathering while maintaining a compact overall structure, allowing the system to achieve large effective aperture without proportionally increasing system volume.
Solution Approach 2:
The patent utilizes inflection points on lens surfaces to control light paths in complex three-dimensional configurations. By manipulating light propagation through multiple spatial dimensions using aspheric surfaces with inflection points, the system achieves efficient light gathering in a compact form factor.
2Volume of moving object
If conventional three or four lens systems are used, then the system size is reduced, but the imaging quality and light intake are insufficient
Solution Approach 1:
The system uses five lens elements instead of three or four, with each element having specific refractive power and surface characteristics. This segmentation allows better control of optical aberrations and improved imaging quality while maintaining compact dimensions through optimized arrangement.
Solution Approach 2:
Different lens elements have locally optimized properties including positive or negative refractive powers, convex or concave surfaces, and specific inflection point configurations. Each lens element is designed with local quality variations to correct specific types of aberrations and optimize light transmission.
3Manufacturing precision
If the number of lenses is increased to five pieces, then the imaging quality and light intake are improved, but the device complexity increases
Solution Approach 1:
Multiple optical functions are merged into the five-lens system including light gathering, aberration correction, and focus control. The lenses work together as an integrated unit where each element performs multiple functions, reducing the need for separate components and simplifying overall system design.
Solution Approach 2:
The five-lens system is designed to handle both visible and infrared light simultaneously, providing multi-spectral imaging capability. The lens elements are configured to perform multiple functions including correction of various optical aberrations, light gathering, and maintaining compact form factor across different wavelength ranges.
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 significantly improves image quality and light intake, enabling effective image capture in low-light conditions and accommodating both visible and infrared spectrums, thus addressing the limitations of conventional systems.
Implementation Method 1
combination of refractive powers, convex and concave surfaces of five-piece optical lenses to increase the quantity of incoming light
Data Source
AI summary
An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.