Transmission Optical System for 3D Image Relay
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Solution Overview
Problem
Existing optical systems, such as relay lens systems, face limitations in transferring three-dimensional images over long distances due to strict physical constraints and aberrations that result in two-dimensional image observation, with fiber endoscopes offering better image quality but limited flexibility in observation points.
Innovation Solution
A transmission optical system utilizing a series of imaging optical systems with symmetry surfaces that bend light paths, allowing for the formation of real, distortion-free three-dimensional images at distant locations by iterative reflection and refraction across multiple dihedral corner reflectors or afocal lens arrays, enabling flexible image positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If relay lens systems are used to transfer images over long distances, then image quality is improved, but the observation point becomes constrained and three-dimensional imaging capability is lost due to aberrations
Solution Approach 1:
The optical system is divided into multiple imaging optical systems arranged in series, each contributing to the overall image transfer while maintaining three-dimensional imaging capability and flexibility in observation points
Solution Approach 2:
Imaging optical systems with symmetry surfaces act as intermediaries to transfer the image while preserving three-dimensional information and enabling flexible observation, overcoming the limitations of direct relay lens connections
2Adaptability or versatility
If fiber endoscopes are used to transfer images, then observation point flexibility is improved, but image quality deteriorates compared to relay lens systems
Solution Approach 1:
The patent replaces the mechanical fiber bundle transmission system with an optical system using imaging optical systems and symmetry surfaces, achieving both high image quality and flexibility through optical reflection and refraction mechanisms
3Manufacturing precision
If conventional imaging optical systems are used, then image formation is achieved, but distortion occurs in three-dimensional images and depth reversal cannot be controlled
Solution Approach 1:
The patent introduces asymmetry through odd-numbered symmetry surfaces to achieve depth-reversed images, and symmetry through even-numbered arrangements to achieve non-reversed images, providing controlled three-dimensional image formation without distortion
Solution Approach 2:
By changing the number of symmetry surfaces (odd or even), the system can switch between producing depth-reversed and non-reversed three-dimensional images, allowing precise control over image orientation and depth perception
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
Enables the observation of three-dimensional images without distortion at distant locations with flexible positioning, suitable for applications like three-dimensional endoscopy, by using a series of imaging optical systems that form planar symmetric images across symmetry surfaces.
Implementation Method 1
a plurality of imaging optical systems 3 each having a symmetry surface forming a plane (optical device plane) such that light paths of light passing through the plane are bent
Implementation Method 2
making use of the effect of reflection of light by specular surfaces, by arranging one or more specular surfaces perpendicularly or nearly perpendicularly to the optical device plane to serve as unit optical elements reflecting light (dihedral corner reflectors)
Data Source
AI summary
A transmission optical system includes a plurality of imaging optical systems arranged apart from each other, forming successively the image of an object to be projected so a real image of either a two-dimensional or a three-dimensional object can be observed at the opposite end, with its convexity features either identical to or reversed from the projected object, depending on whether the total number of the imaging optical systems is even or odd.