Target-Oriented Light Emitting Device for LIDAR Divergence Control
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Solution Overview
Problem
Current LIDAR systems face challenges in precisely controlling the divergence angle of light emitted for detecting objects at varying distances and sizes, particularly in autonomous vehicle applications, where accurate detection of small objects at long distances is necessary.
Innovation Solution
A target-oriented light-emitting device with a light-emitting unit, a light-focusing unit, and adjustable lenses that control the emission direction and divergence angle of light, utilizing a first light adjuster and a second light adjuster to adjust the focal position and divergence angle, including a drive unit for precise movement in three axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LIDAR systems use fixed light emission angles, then the structure is simple, but the ability to detect objects at varying distances and sizes is limited
Solution Approach 1:
The patent implements dynamic adjustability of the light emission system by providing movable first and second light adjusters that can change their positions along the optical axis. The first light adjuster moves to adjust emission direction, while the second light adjuster moves to control focal position. This dynamic configuration enables the system to adapt to different detection scenarios (varying distances and object sizes) without requiring multiple fixed systems, thus improving versatility while maintaining reasonable structural complexity.
2Manufacturing precision
If multiple adjusters are added to control light divergence angle, then light direction control is improved, but manufacturing cost increases
Solution Approach 1:
The patent divides the light adjustment function into two separate adjustable components: a first light adjuster for controlling emission direction and a second light adjuster for controlling focal position. This segmentation allows each component to be optimized independently and adjusted separately, achieving precise control over light divergence angle and direction. The segmented design enables cost-effective manufacturing by allowing independent optimization and replacement of each adjustment mechanism without requiring a complete redesign of the entire optical system.
3Ease of manufacture
If a simplified structure is used, then manufacturing cost is reduced, but control over light divergence angle becomes difficult
Solution Approach 1:
The patent creates a multi-functional adjustment system where the first light adjuster serves dual purposes: it controls both the emission direction and contributes to divergence angle control. The second light adjuster complements this by controlling the focal position. This universal design allows a relatively simple structural configuration to achieve multiple control functions simultaneously, reducing manufacturing cost while maintaining ease of operation through coordinated movement of the two adjusters.
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 easy control of light divergence angle with a simplified structure, reducing manufacturing costs and improving the ability to detect objects accurately by adjusting the light beam direction and spread based on object size and distance.
Implementation Method 1
a light-focusing unit for focusing the light emitted from the light-emitting unit
Implementation Method 2
a first light adjuster on which the light focused at the light-focusing unit is incident, the first light adjuster adjusting an emission direction of the light
Implementation Method 3
a second light adjuster disposed between the light-focusing unit and the first light adjuster so as to control the focal position of the light that is incident on the first light adjuster
Data Source
AI summary
An embodiment relates to a target-oriented light emitting device comprising: a light emitting part for emitting light; a light focusing part for focusing the light emitted from the light emitting part; a first light adjusting part to which the light focused by in the light focusing part is incident, adjusting the orientation direction of the light, and emitting the adjusted light; and a second light adjusting part disposed between the light focusing part and the first light adjusting part so as to adjust a focal position of the light incident to the first light adjusting part.