Optical Communication Device Emission Axis Correction
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Solution Overview
Problem
In long-distance optical communication systems, especially between the ground and satellites, existing technologies face challenges in stabilizing and accurately directing laser beams due to angle correction errors, which complicate the optical system, increase its size, and limit control in the Z axis direction.
Innovation Solution
An optical communication device with an angle correction device that detects and corrects emission optical axis errors using a light receiving angle detection device, and includes gimbal and actuator systems for precise control of the XY and Z axes, allowing for miniaturization and simplification of the optical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an angle correction device is added to correct reception optical system direction, then reception accuracy is improved, but device complexity increases
Solution Approach 1:
The emission optical axis correction device is integrated into the emission optical system, combining the correction function with the existing emission optics. This merging approach allows angle error correction without adding a completely separate complex device, thereby improving reception accuracy while limiting the increase in overall device complexity.
Solution Approach 2:
The emission optical system is designed to serve multiple functions: both emitting laser beams for communication and correcting emission optical axis errors. By making the emission system universal, the patent avoids adding dedicated separate correction devices, thus improving accuracy while controlling complexity.
2Measurement precision
If mirrors are used for optical axis control, then direction accuracy is improved, but space requirement increases
Solution Approach 1:
The patent replaces the traditional mechanical mirror-based optical axis control system with an emission optical axis correction device that works by detecting angle errors and correcting the emission optical axis through the existing emission optics. This substitution eliminates the need for large mirrors and their support structures, thereby improving direction accuracy while significantly reducing space requirements.
3Measurement precision
If multiple mirrors are arranged for X and Y axis control, then control precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple control functions (X axis and Y axis control) into a single emission optical axis correction device. By merging these functions, the system achieves the control precision of multiple mirrors while avoiding the complexity of arranging and coordinating multiple separate mirror systems.
4Adaptability or versatility
If mirror control is used for optical axis control, then direction control capability is improved, but device complexity increases
Solution Approach 1:
The emission optical system is designed with universal functionality to handle both emission and correction tasks. The emission optical axis correction device can control the optical axis in multiple directions (X, Y, and Z axes) without requiring separate mirror systems for each axis, thereby achieving comprehensive direction control capability while maintaining relatively simple device architecture.
5Stability of the object's composition
If angle correction is performed on reception system, then reception stability is improved, but emission accuracy deteriorates due to angle correction error
Solution Approach 1:
The patent segments the correction function into two independent parts: angle correction for the reception system and emission optical axis correction. By separating these functions, the system can perform angle correction to improve reception stability without introducing angle correction errors into the emission system, as each has its own independent correction mechanism.
Data Source
AI summary
An optical communication device, for performing communication between spatially separated points by using one or more laser beams, includes an angle correction device that corrects a direction of a light receiving system and an emission optical axis correction device, in which an angle error which is not corrected by the angle correction device is detected by a light receiving angle detection device, and the emission optical axis correction device is controlled according to a detected error amount, and an emission optical axis is corrected.