Aircraft Laser Reflection Device for Safe Function Testing
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Solution Overview
Problem
Aircraft-installed Doppler LIDAR systems face challenges in safely and accurately checking the emission direction of laser light during function tests, as the fixed emission unit can emit laser light towards unsafe directions, such as the ground or buildings, and the reflection of invisible infrared rays makes it difficult to position a reflection mirror correctly and determine the laser reflection direction.
Innovation Solution
A laser light reflection method and device that involves adjusting a reflection mirror's elevation, bearing, and levelness to simulate the actual laser emission direction using a laser pointer, allowing for accurate measurement of the laser reflection direction relative to the horizontal plane and ensuring safe reflection of laser light by inverting the laser pointer's orientation and using a guide scope to align the optical axes, thereby confirming the safety of the reflection direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a reflection mirror is fixed to a camera platform on a tripod to modify the emission direction of laser light, then the laser light can be reflected, but the reflection mirror cannot be disposed correctly in the center of the laser emission direction because invisible infrared rays are used as the laser light
Solution Approach 1:
A visible laser pointer is introduced as an intermediary tool to mark the laser emission direction on the laser emission window. This visible marker serves as a mediator between the invisible infrared laser beam and the operator, enabling accurate positioning of the reflection mirror without direct visualization of the infrared beam itself.
Solution Approach 2:
The invisible infrared laser emission direction is copied onto the laser emission window using a visible laser pointer. This creates a visible representation (copy) of the invisible beam path, allowing the operator to position the reflection mirror accurately by following the visible marker rather than attempting to directly observe the invisible infrared beam.
2Adaptability or versatility
If a reflection mirror is used to reflect laser light during function tests, then the emission direction can be modified, but the direction in which the laser light is reflected is not known and therefore safety cannot be confirmed
Solution Approach 1:
A guide scope is attached to the reflection mirror to provide visual feedback on the reflected laser light direction. The guide scope allows operators to directly observe where the reflected beam is pointing, enabling real-time verification of safety before actual laser emission occurs. This feedback mechanism ensures that the reflected beam does not指向 unsafe areas such as ground surfaces or buildings.
3Ease of manufacture
If the laser emission unit is fixed in an aircraft, then the apparatus can be installed, but the laser light may be emitted in a direction in which safety cannot be confirmed, such as in the direction of a ground surface or building
Solution Approach 1:
The reflection mirror, guide scope, and laser pointer are set up before actual laser emission to pre-determine and verify the reflected beam direction. This preliminary action allows safety confirmation to occur before the high-power infrared laser is activated, preventing potential harm to ground surfaces, buildings, or personnel by ensuring the beam path is safe in advance.
4Measurement precision
If a laser pointer is disposed on an out-of-plane vertical axis of a reflection mirror to simulate the actual laser emission direction, then the projection point of the laser pointer can scan the actual laser light transmission portion, but the elevation of the reflection direction relative to the horizontal direction must be measured accurately
Solution Approach 1:
The reflection mirror assembly is designed to perform multiple functions: it reflects the actual laser beam, holds the guide scope for safety verification, and mounts the laser pointer for direction simulation. This multi-functional design consolidates several tools into one integrated system, reducing overall device complexity while maintaining measurement precision.
Solution Approach 2:
Complex mechanical measurement instruments are replaced with a simpler optical approach using the laser pointer and guide scope. The laser pointer provides visual indication of the emission direction, and the guide scope provides visual feedback on the reflected direction, eliminating the need for complex mechanical theodolites or other precision measurement devices.
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 accurate and safe reflection of laser light in a desired direction, allowing for precise measurement of the laser reflection direction and ensuring safety during function checks, thereby preventing potential hazards and facilitating adjustments to the laser apparatus.
Implementation Method 1
actual laser light emitted from the aircraft to a body exterior... the actual laser light is reflected by the reflection mirror
Implementation Method 2
A laser pointer is disposed on an out-of-plane vertical axis of a reflection mirror... emitting laser light from a parked aircraft
Implementation Method 3
using a guide scope to align the optical axes, thereby confirming the safety of the reflection direction
Data Source
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AI summary
The present invention provides a laser light reflection device for an aircraft-installed laser apparatus with which, when a function check is performed on the aircraft-installed laser apparatus by emitting laser light from a parked aircraft to a body exterior, the emitted laser light can be reflected in a desired direction safely and efficiently. A reflection mirror is capable of autorotation about at least an in-plane horizontal axis thereof, and a support ring is attached to the reflection mirror so as to be capable of rotating about an in-plane vertical axis and the in-plane horizontal axis of the reflection mirror. Further, a laser pointer unit formed by inserting a laser pointer into a sleeve pipe is attached to the support ring so as to be oriented toward an in-plane of the reflection mirror. Furthermore, a guide scope is attached to the support ring such that an optical axis thereof matches an optical axis of the laser pointer unit.