Laser Radar Alignment Using Coaxial Visible Light
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Solution Overview
Problem
The high cost of invisible light cameras used for adjusting laser radar systems, which are necessary for ensuring accurate optical path settings, hinders cost-effective production and operation in industries and national defense applications.
Innovation Solution
A method for adjusting laser radar systems that utilizes a laser device capable of coaxially outputting visible and invisible light, allowing for the use of a cheaper common camera to adjust the system by minimizing the area of the visible light spot on a target surface, thereby reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If invisible light cameras are used for adjusting laser radar, then measurement precision of invisible light parameters is improved, but device cost increases significantly
Solution Approach 1:
The patent introduces visible light as an intermediary substance to mediate between the adjustment system and the invisible light laser. By using visible light to mark the same spot on the target surface that the invisible light would hit, operators can visually align and adjust the invisible light parameters without directly observing the invisible light itself. This intermediary approach enables precise adjustment using ordinary cameras while maintaining measurement accuracy.
Solution Approach 2:
The patent creates a visible copy or representation of the invisible light's target position by having the visible light follow the same optical path and hit the same spot on the target surface. This visible copy allows operators to see where the invisible light is pointing and make precise adjustments using standard imaging equipment instead of expensive specialized cameras.
2Ease of manufacture
If visible light is used to adjust invisible light settings, then device cost is reduced, but measurement precision of invisible light parameters may be affected
Solution Approach 1:
Visible light serves as an intermediary that replicates the invisible light's optical path. The visible light follows the exact same trajectory through the optical system and hits the same spot on the target surface, allowing accurate mapping of invisible light position without direct observation. This intermediary approach maintains precision while enabling the use of inexpensive visible light cameras.
Solution Approach 2:
The system uses visible light feedback to guide the adjustment of invisible light parameters. By observing the visible light spot position on the target surface and comparing it to the desired position, operators can make iterative adjustments to the invisible light alignment until the visible spot is correctly positioned, ensuring accurate invisible light parameter settings.
3Manufacturing precision
If separate adjustment methods are used for visible and invisible light, then adjustment precision for each wavelength is improved, but device complexity increases
Solution Approach 1:
The patent merges the adjustment processes for visible and invisible light into a single unified operation. By having both wavelengths share the same optical path and target the same spot on the target surface, a single adjustment action simultaneously optimizes both visible and invisible light alignment. This eliminates the need for separate adjustment procedures and reduces overall system complexity while maintaining precision for both wavelengths.
Solution Approach 2:
The visible light system is designed to serve multiple functions: it acts as both the primary adjustment guide and a verification tool for invisible light alignment. The same visible light path is used to establish the target position and to verify that the invisible light is correctly aligned, making the visible light system universally applicable to multiple adjustment tasks and simplifying the overall device architecture.
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 method enables cost-effective adjustment of laser radar systems by using visible light to adjust invisible light settings, facilitating production operations and reducing overall production costs while ensuring accurate optical path alignment.
Implementation Method 1
a laser device and a collimation lens, the laser device is capable of coaxially outputting visible light and invisible light
Implementation Method 2
making the laser device output the visible light and adjusting a first distance until an area of a spot of the visible light on the target surface reaches a minimum value
Data Source
AI summary
A method for adjusting a laser radar that includes a laser device and a collimation lens, includes: providing a laser collimator and a target surface; setting a second distance according to wavelength of the invisible light of the laser device, the second distance being a distance between a lens of the laser collimator and the target surface; obtaining a test deviation value about the second distance according to the wavelength of the invisible light and the wavelength of the visible light of the laser device; adjusting the second distance according to the test deviation value to obtain a corrected second distance; and making the laser device output the visible light and adjusting a first distance until an area of a spot of the visible light on the target surface reaches a minimum value, the first distance being a distance between the laser device and the collimation lens.