LiDAR Emission Module Fast-Slow Axis Collimation
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Solution Overview
Problem
The existing LiDAR emission modules face challenges in efficient mounting and adjustment due to the complexity of optical component alignment, leading to low efficiency in achieving the required divergence angle for outgoing laser beams.
Innovation Solution
The emission module incorporates a collimating element with a fast-axis and slow-axis collimating lens, allowing for independent collimation of the outgoing laser in both directions, which are sequentially integrated along the laser path, facilitating easier alignment and adjustment by preventing cross-axis interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple optical components are used in the emission module, then the divergence angle requirement can be met, but the mounting and adjustment efficiency decreases
Solution Approach 1:
The patent combines the fast-axis and slow-axis collimating lenses into a single integrated collimating element, reducing the number of separate optical components that need to be mounted and adjusted. This integration maintains the divergence angle control capability while significantly improving mounting and adjustment efficiency by eliminating the need to align multiple independent components.
Solution Approach 2:
The collimating element is designed with separate fast-axis and slow-axis collimating lenses that can be independently adjusted and optimized. This segmentation allows each axis to be tuned for its specific divergence angle requirements while being mounted as part of a unified structure, balancing precision control with assembly efficiency.
2Manufacturing precision
If multiple optical components are used in the emission module, then the divergence angle requirement can be met, but the device complexity increases
Solution Approach 1:
The patent merges multiple optical components into a single integrated collimating element, reducing the overall device complexity. This unified structure contains the necessary fast-axis and slow-axis collimating functionality without requiring separate mounting brackets, alignment mechanisms, and adjustment procedures for each individual component.
Solution Approach 2:
The integrated collimating element serves multiple functions simultaneously: it provides fast-axis collimation, slow-axis collimation, and acts as a unified mounting structure. This multi-functionality eliminates the need for separate components that would otherwise be required to achieve the same optical performance.
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 solution enhances the mounting and adjustment efficiency of the LiDAR emission module by allowing separate collimation of fast and slow axes, reducing light interference and making it easier to achieve the desired divergence angle, thus improving the overall performance and usability of the LiDAR system.
Implementation Method 1
the fast-axis collimating element includes a fast-axis collimating lens... configured to collimate the outgoing laser in a fast-axis direction
Implementation Method 2
the slow-axis collimating element includes a slow-axis collimating lens... configured to collimate the outgoing laser in the slow-axis direction
Data Source
AI summary
Embodiments of the present disclosure provide an emission module and a mounting and adjustment method of the same, a LiDAR and a smart sensing device. An emission module includes an emission apparatus and a collimating element provided sequentially along an outgoing laser, where the emission apparatus is configured to generate the outgoing laser, and the collimating element is configured to collimate the outgoing laser generated by the emission apparatus and emit the outgoing laser; and the collimating element includes a fast-axis collimating element and a slow-axis collimating element provided sequentially along the outgoing laser, the fast-axis collimating element is configured to receive the outgoing laser generated by the emission apparatus and collimate the outgoing laser in a fast-axis direction, and the slow-axis collimating element is configured to receive the outgoing laser collimated in the fast-axis direction, collimate the outgoing laser in the slow-axis direction and emit the outgoing laser.