Ogive Optical Dome Correction for Image Warp
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Solution Overview
Problem
The ogive-shaped optical dome in flying objects causes non-uniform refraction angles, leading to image warp and misalignment of the swing-type optical system's direction, which existing correction systems fail to adequately address.
Innovation Solution
An image obtaining apparatus with a swing-type optical system, an ogive-shaped optical dome, and a correction optical system that adjusts the light axis to correct for refraction angle differences, ensuring parallelism of transmitted light beams and maintaining image alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an ogive-shaped optical dome is used, then aerodynamic performance is improved, but refraction angle uniformity deteriorates causing image warp
Solution Approach 1:
The patent applies local quality by making different regions of the optical dome have different functions: the outer surface maintains the ogive shape for aerodynamics, while the inner surface has a specific curved shape (spherical, aspherical, or free-form) optimized for optical performance. This allows each surface to independently optimize its respective function without compromising the other.
Solution Approach 2:
The patent employs asymmetry by designing the inner and outer surfaces with different geometric characteristics. The outer surface follows the symmetric ogive shape for aerodynamics, while the inner surface uses asymmetric curved surfaces (particularly free-form surfaces) to compensate for refraction variations, creating an intentionally asymmetric optical path that corrects the asymmetric refraction patterns caused by the ogive shape.
2Manufacturing precision
If a spherical optical dome is used, then refraction angle uniformity is improved, but aerodynamic performance deteriorates
Solution Approach 1:
The patent applies local quality by making different regions of the optical dome have different functions: the outer surface maintains the ogive shape for aerodynamics, while the inner surface has a specific curved shape (spherical, aspherical, or free-form) optimized for optical performance. This allows each surface to independently optimize its respective function without compromising the other.
3Device complexity
If the optical dome shape is optimized for aerodynamics, then device complexity is reduced, but image alignment precision deteriorates
Solution Approach 1:
The patent applies local quality by making different regions of the optical dome have different functions: the outer surface maintains the ogive shape for aerodynamics, while the inner surface has a specific curved shape (spherical, aspherical, or free-form) optimized for optical performance. This allows each surface to independently optimize its respective function without compromising the other.
Solution Approach 2:
The patent addresses the two-dimensional conflict between aerodynamic shape and optical performance by introducing a third dimension: the multi-surface optical path design. By creating distinct optical surfaces (outer ogive surface, inner curved surface, and potentially additional correction surfaces), the patent resolves the contradiction in a higher-dimensional optical design space, allowing both aerodynamic and optical requirements to be satisfied simultaneously.
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 correction optical system effectively corrects for refraction angle variations, maintaining image parallelism and alignment, even with the ogive-shaped optical dome, thereby stabilizing the image acquisition direction.
Implementation Method 1
When parallel light beams which were irradiated from the outside transmits through the optical dome, the correction optical system corrects a state that the parallel light beams are not parallel because of the shape of the optical dome
Data Source
AI summary
An image obtaining apparatus has a swing-type optical system, an optical dome and a correction optical system. The swing-type optical system is configured to adjust a photographing direction based on a swinging operation. The correction optical system corrects transmitted light beams through the optical dome to parallel light beams parallel to the photographing direction.