LiDAR Optical Window Heating Layout for Clear Beam Transmission
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Solution Overview
Problem
Existing LiDAR apparatuses face inefficiencies in heating the optical window due to the heating conductor's decreased effectiveness with distance from the radiation window, leading to insufficient heating and adverse effects on emitted light.
Innovation Solution
A LiDAR apparatus design with a heating wire arranged at equal intervals away from beam center lines, extending parallel to adjacent beam center lines, ensuring efficient heating of the optical window while minimizing interference with light beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the heating conductor is arranged around the radiation window without occupying the radiation window, then the emitted light can pass through the radiation window, but the heating efficiency of the optical window becomes insufficient
Solution Approach 1:
The heating wire is arranged in a meandering pattern that extends in the scanning direction (parallel to beam center lines) rather than only around the radiation window perimeter. This dimensional change allows the heating wire to cover larger areas including central regions of the optical window, improving heating efficiency while maintaining light transmission pathways.
Solution Approach 2:
The heating wire is divided into multiple sections with different arrangements: some sections extend parallel to beam center lines at equal intervals, while other sections may occupy different positions. This segmentation allows different portions of the optical window to be heated effectively without blocking light beams, resolving the contradiction between heating coverage and light transmission.
2Temperature
If the heating conductor is placed close to the optical window center, then heating efficiency improves, but adverse effects on emitted light increase
Solution Approach 1:
The heating wire arrangement varies by location: in beam transmitting regions, the wire is positioned at equal intervals from beam center lines to minimize light interference, while in non-beam regions, the wire can be positioned to maximize heating effect. This local differentiation allows the system to achieve both heating efficiency and light transmission without compromise.
3Temperature
If the heating conductor occupies the radiation window area, then heating efficiency improves, but light transmission is blocked
Solution Approach 1:
The heating wire is configured with dynamic positioning relative to beam paths: it extends parallel to beam center lines at equal intervals, creating gaps that allow light transmission while still providing heating. The wire's meandering pattern dynamically adapts to both heating requirements and light transmission needs, rather than statically occupying or avoiding the radiation window area.
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
Enhances heating efficiency of the optical window and reduces adverse effects on emitted light by uniformly distributing heat across the window, maintaining consistent light intensity.
Implementation Method 1
The heating wire is configured to supply heat to the optical window
Implementation Method 2
The heating wire is configured to supply heat to the optical window
Data Source
AI summary
A LiDAR apparatus includes a light transmitter, an optical window, and a heating wire. The light transmitter emits and sweeps light in a predetermined scanning direction. The optical window is disposed in an opening of a housing in which the light transmitter is installed and permits light beams, as outputted from the light transmitter, to pass therethrough. The heating wire works to supply heat to the optical window. The heating wire has at least one section which is located at equal intervals away from and extends parallel to two of a plurality of beam center lines which are arranged adjacent each other. Each of the beam center lines is a line extending in the scanning direction through centers of a plurality of beam transmitting regions of the optical window through which the light beams pass.