Dual-Module LiDAR Emitter for Wide-Field, Long-Range Detection
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Solution Overview
Problem
Existing detection apparatuses, such as lidars, face challenges in expanding their visual field without significantly reducing long-range detection capability, resulting in large visual blind spots and low detection efficiency.
Innovation Solution
The use of a dual-emitting module system with a first emitting module and a second emitting module, where the first module emits a light beam that is shaped by a light shaping element to expand its field of view, while the second module maintains good collimation for long-range detection, with both modules operating either in parallel or on the same focal plane and potentially using time division to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lidar emits a laser beam with a high collimation degree to achieve strong long-range detection capability, then the long-range detection capability is improved, but the visual field becomes small and detection efficiency becomes low
Solution Approach 1:
The patent divides the detection system into multiple emitting modules, each responsible for different detection tasks. Specifically, it segments the visual field coverage into multiple regions that can be detected simultaneously by different modules, allowing the system to maintain high collimation for long-range detection while expanding overall visual field coverage for improved detection efficiency
Solution Approach 2:
The patent expands the visual field by utilizing spatial arrangement of multiple emitting modules positioned at different locations and orientations. This dimensional approach allows each module to maintain its high collimation beam for long-range detection while the collective arrangement covers a broader visual field, effectively adding spatial dimensionality to resolve the contradiction
2Productivity
If the lidar expands its visual field to improve detection efficiency, then the detection efficiency is improved, but the long-range detection capability is significantly reduced
Solution Approach 1:
The detection system segments different detection requirements into separate emitting modules. Each module maintains its own beam characteristics optimized for its specific function, allowing the system to achieve both expanded visual field coverage and preserved long-range detection capability through functional segmentation
3Device complexity
If a single emitting module is used to simplify the system structure, then the device complexity is reduced, but the visual field coverage is limited and blind spots increase
Solution Approach 1:
The patent merges multiple emitting modules into a coordinated detection system where each module contributes to the overall visual field coverage. By combining the detection capabilities of multiple modules with similar or complementary structures, the system achieves comprehensive coverage while maintaining relatively simple individual module designs
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 configuration enhances short-range detection capabilities, reduces visual blind spots, and improves overall detection efficiency without compromising long-range detection performance.
Implementation Method 1
a partial light beam in the first light beam is reflected by the first light shaping element, to obtain a first shaped light beam
Data Source
AI summary
An emitting apparatus, a detection apparatus, and a terminal are provided, and may be used in fields such as detection, intelligent surveying and mapping, and intelligent driving. The emitting apparatus includes a first emitting module, a second emitting module, and a first light shaping module. The first emitting module and the second emitting module are disposed in parallel, and are separately configured to emit a light beam. Therefore, in embodiments of this application, an emitting visual field of the first emitting module is expanded. A second light beam is not processed by the first light shaping module, so that a long-range detection capability is almost not affected. In conclusion, in embodiments of this application, a visual field of the detection apparatus is expanded without greatly reducing the long-range detection capability.