LiDAR Optical Device Segmentation for Accurate Measurement
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Solution Overview
Problem
In LiDAR systems, the integration of transmission and reception optical systems leads to inaccurate detection of reflected light intensity due to the reception system receiving light reflected by the lens, rather than solely from the target object.
Innovation Solution
An optical device with a first reflection means to emit collimated light onto a target object and a second reflection means with an opening part to direct the reflected light to a reception means, preventing the collimated light from entering the reception system, thus allowing accurate detection of reflected light intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the transmission optical system and reception optical system are integrated and share the same lens, then the device complexity is reduced, but the measurement precision deteriorates due to lens-reflected light contaminating the detection
Solution Approach 1:
The patent divides the optical path into distinct segments: the transmission optical path emits light through the lens, while the reception optical path receives reflected light through a separate opening. This segmentation prevents the mixed reception of lens-reflected light and target-reflected light, resolving the measurement precision issue while maintaining system integration benefits
Solution Approach 2:
The patent extracts the harmful lens-reflected light from the reception path by providing a dedicated opening that only admits light reflected from the target object. This extraction eliminates the contamination of detection signals while preserving the integrated optical system structure
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 measurement in LiDAR systems by preventing contamination of the detected light with collimated light, ensuring that only the reflected light from the target object is measured, thereby improving measurement accuracy.
Implementation Method 1
a first reflection means for reflecting light emitted from a light emission means and irradiating the light onto an object, as collimated irradiation light
Implementation Method 2
the irradiation light reflected by the first reflection means passes through an opening part being provided for the second reflection means and irradiates the object
Implementation Method 3
a second reflection means for reflecting, toward a light reception means, the irradiation light reflected by the object
Data Source
AI summary
[Problem] To provide an optical device and a method for controlling said optical device which enable more accurate measurement by using LiDAR.[Solution] This optical device is provided with: a first reflection means that reflects light emitted from a light emission means and irradiates an object with the reflected light as irradiation light; and a second reflection means that reflects the irradiation light reflected by the object toward a light reception means. The irradiation light reflected by the first reflection means passes through an opening part provided for the second reflection means and is applied to the object.