Coaxial Macro Scanner Optical Crosstalk Reduction
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Solution Overview
Problem
Coaxial macro scanner systems face challenges in minimizing imaging errors and optical crosstalk between light sources and detectors, which affect the accuracy and signal quality of environmental scanning.
Innovation Solution
A coaxial macro scanner system is designed with a rotatable mirror system where the light source, detector, and mirrors are aligned in a common plane, ensuring optical isolation through a first mirror emitting the beam and a second mirror receiving and deflecting it, with the mirrors positioned at a right angle to each other and the axis of rotation, allowing for coaxial transmission and reception of light beams without direct interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rotatable mirror system is used to deflect laser light into the environment and receive reflected light, then environmental scanning capability is achieved, but optical crosstalk between light source and light detector occurs
Solution Approach 1:
The mirror system is segmented into multiple mirrors arranged at different orientations around the light path. Each mirror handles specific angular ranges of light deflection, separating the optical paths for transmission and reception to prevent direct crosstalk while maintaining full environmental scanning capability.
Solution Approach 2:
Additional mirrors are introduced as intermediary elements between the light source and light detector. These intermediary mirrors redirect light beams through complex optical paths that prevent direct line-of-sight crosstalk while enabling comprehensive environmental scanning through coordinated mirror rotation.
2Object-generated harmful factors
If mirrors are positioned to enable coaxial transmission and reception, then optical isolation is improved, but imaging errors increase due to deviation from paraxial conditions
Solution Approach 1:
The mirror system employs dynamic rotation and coordination of multiple mirrors to maintain optimal optical paths. By continuously adjusting mirror orientations during operation, the system preserves paraxial conditions for accurate imaging while achieving coaxial transmission and reception through time-varying optical configurations.
Solution Approach 2:
The system transitions from static single-plane mirror arrangements to multi-dimensional dynamic mirror configurations. By utilizing rotational degrees of freedom and three-dimensional mirror positioning, the system achieves coaxial operation while maintaining paraxial approximation through complex spatial light path management.
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 minimizes imaging errors and enhances the signal-to-noise ratio, enabling better object detection and integration into compact forms suitable for transportation applications with improved aerodynamics and visibility.
Implementation Method 1
the first mirror and the second mirror, which extend in a direction perpendicular to the light path of the transmitting light beam, are arranged at a distance from one another, in each case at a right angle to the light path
Implementation Method 2
the second mirror is used to receive the receiving light beam and to deflect it onto the light detector
Implementation Method 3
the rotatable mirror system is configured to emit a transmitting light beam, generated by the light source, with the aid of a first mirror in a predefined plane into an environment, and to receive a receiving light beam
Data Source
AI summary
A coaxial-macro-scanner-system, including a light-source, a light-detector, and a rotatable-mirror-system to optically isolate an optical-path between the light-source and light-detector, the rotatable-mirror-system emitting a transmitting-light-beam, generated by the light-source, with a first-mirror in a predefined-plane into an environment, and to receive a receiving-light-beam, representing components of the transmitting-light-beam reflected/dispersed by the environment, with a second-mirror in the same-plane and to reflect it onto the light-detector, both the first-mirror, the second-mirror and an axis of rotation about which the second-mirror is rotated being aligned at a right-angle to the predefined-plane, the first-mirror being aligned at a right-angle to the predefined-plane and being in a region of the rotation-axis of the second-mirror so that the first-mirror and the second-mirror rotate about the common-rotation-axis, and an angle under which the first-mirror and the second-mirror are disposed relative to each other about the common-rotation-axis corresponding to an angle of more than 0°.