Super-Wide-Angle Lens Assembly for VR Omnidirectional Imaging
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Solution Overview
Problem
Conventional super-wide-angle lenses face challenges in optimizing lens structure for small size, adjusting aberration, and addressing temperature-dependent focusing errors, particularly in omnidirectional photography for virtual reality applications.
Innovation Solution
The optical lens assembly comprises a first lens group with negative refractive power and a second lens group with positive refractive power, including specific lens configurations such as meniscus-shaped lenses and biconvex lenses, optimized for a field of view of 130° or greater, to correct aberrations and maintain performance across temperature variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If super-wide-angle lenses are designed to have a super wide field of view and large maximum aperture, then the field of view and light gathering capability are improved, but the lens size and complexity increase making it difficult to reduce device size
Solution Approach 1:
The lens assembly is divided into multiple lens groups (first lens group with negative refractive power, second lens group with positive refractive power) with specific configurations. Each group contains multiple lenses with defined shapes (meniscus, biconvex) and refractive powers, allowing the system to achieve super-wide field of view while maintaining compact size through modular design
Solution Approach 2:
Different regions of the lens system have specialized functions: the first lens group handles negative refractive power for wide-angle coverage, the second lens group provides positive refractive power for focusing, and specific lenses (e.g., meniscus-shaped first lens, biconvex third lens) are optimized for particular aberration corrections in their respective zones
2Ease of manufacture
If conventional lens structures are used in super-wide-angle lenses, then manufacturing is simpler, but aberration adjustment and temperature-dependent focusing errors cannot be effectively corrected
Solution Approach 1:
The patent specifies precise parameter ranges for lens design including refractive power ratios (first lens group negative, second lens group positive), lens shape parameters (meniscus convex toward object side, biconvex configurations), and surface curvature relationships. These parameter optimizations enable effective aberration correction and temperature compensation while maintaining manufacturing feasibility
Solution Approach 2:
The stop element is positioned between the first and second lens groups to control light paths and reduce aberrations. Additionally, the specific configuration of lenses with inflection points on their surfaces acts as an intermediary mechanism to correct temperature-dependent focusing errors without requiring complex active control systems
3Adaptability or versatility
If multiple optical systems are arranged for omnidirectional photographing, then coverage is improved, but stitching errors and temperature-dependent focusing errors occur in the stitched regions
Solution Approach 1:
The lens assembly incorporates temperature compensation through its optical design, where the combination of negative and positive refractive power groups with specific lens shapes (meniscus, biconvex) and inflection points creates a system that maintains focus stability across temperature variations, reducing stitching errors in omnidirectional applications
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 enables a compact, high-performance super-wide-angle optical system that minimizes aberrations and temperature-dependent focusing errors, enhancing user experience in omnidirectional photography and virtual reality applications.
Implementation Method 1
a first lens group having positive or negative refractive power, a stop, and a second lens group having positive refractive power that are arranged from an object side to an image side
Data Source
AI summary
Provided are an optical lens assembly and an electronic apparatus including the optical lens assembly. The optical lens assembly includes a first lens group having positive refractive power, a stop, and a second lens group having positive refractive power that are arranged from an object side to an image side. The first lens group includes a first lens having negative refractive power and a meniscus shape convex toward the object side, a second lens having negative refractive power, and at least one other lens. The second lens group includes at least three lenses, and a lens of the second lens group closest to the image side has at least one inflection point.