Stereoscopic Optical System Base Length Optimization
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Solution Overview
Problem
Existing stereoscopic optical systems face challenges in maintaining a sufficient base length while achieving good image quality and a strong three-dimensional effect, often resulting in reduced image quality or overlapping image circles on the image sensor.
Innovation Solution
The proposed stereoscopic optical system consists of two parallel optical systems, each with an aperture stop and at least two positive lenses on the image side. The system satisfies specific inequalities regarding the base length, focal length, and maximum half-angle of view to optimize image quality and three-dimensional effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If two reflective surfaces are used to bend the optical path in each of the two optical systems, then a sufficient base length is secured, but the device complexity increases
Solution Approach 1:
The patent removes the reflective surfaces from the optical path design. Instead of using two reflective surfaces to bend the optical path, the invention uses a simplified optical system where light travels directly from the object through the lens to the image sensor, eliminating the need for complex reflective path bending while maintaining adequate base length through proper optical parameter selection.
Solution Approach 2:
Rather than using reflective surfaces to extend the optical path length, the invention inverts the approach by optimizing the direct optical path parameters (focal length, object distance, image distance) to achieve the desired stereoscopic effect without additional optical components. The solution flips from adding complexity to simplify the system.
2Length of moving object
If the base length is increased to maintain stereoscopic effect, then the three-dimensional effect is improved, but the device size increases
Solution Approach 1:
The patent applies parameter changes by optimizing the relationship between focal length (f), object distance (L), and maximum half-angle of view (ω) through specific mathematical inequalities. By carefully selecting and constraining these optical parameters, the system achieves adequate base length for stereoscopic imaging while keeping the physical device dimensions compact and manageable.
3Volume of moving object
If the optical system is compacted to reduce device size, then the device size is reduced, but the image quality deteriorates
Solution Approach 1:
The patent maintains image quality in a compact design by enforcing specific parameter relationships through mathematical inequalities. The constraints on focal length, object distance, and angle of view ensure that even in a compact configuration, the optical parameters remain within ranges that produce high-quality images with proper focus and minimal aberrations.
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 a stereoscopic optical system with a large aperture diameter, high optical performance, and reduced size and base length, effectively providing good stereoscopic imaging with improved image quality.
Implementation Method 1
at least two positive lenses disposed on an image side of the aperture stop
Data Source
AI summary
A stereoscopic optical system includes two optical systems arranged in parallel. Each of the two optical systems includes an aperture stop and at least two positive lenses disposed on an image side of the aperture stop. Predetermined inequalities are satisfied.