Light Source Driving Device Centralized Control for Rangefinding
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Solution Overview
Problem
Conventional rangefinding devices with multiple light sources have complex configurations due to the need for a scanning mechanism unit in each light-emitting unit, which complicates the device setup.
Innovation Solution
A light source driving device with a centralized light source control unit that individually controls the emission of light from multiple light sources, including laser diodes, based on predetermined conditions such as light emission conditions, ambient light, and light source information, to simplify the device configuration and enable simultaneous light emission from multiple sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a scanning mechanism unit is provided in each light-emitting unit, then the laser light can be controlled to scan over a wide area, but the configuration of the device becomes complex
Solution Approach 1:
The patent merges the scanning mechanism units from multiple light-emitting units into a single shared scanning mechanism. This single scanning mechanism controls the emission of laser light from all light sources, allowing wide-area scanning while reducing device complexity by eliminating redundant scanning components in each light-emitting unit.
Solution Approach 2:
The single scanning mechanism unit is designed to serve multiple light-emitting units simultaneously. It performs the universal function of controlling laser light emission and scanning for all light sources, making one component perform multiple functions that previously required separate dedicated units for each light source.
2Adaptability or versatility
If multiple light sources are used to measure distance and obtain color information, then the measurement capabilities are enhanced, but the device configuration becomes complex
Solution Approach 1:
The patent combines multiple light sources (laser diodes emitting different wavelengths) under a single control architecture. The scanning mechanism unit controls all light sources, and the system uses a single object to reflect light from all sources, enabling both distance measurement and color information acquisition without requiring separate complete systems for each function.
Solution Approach 2:
The system uses multiple light sources with different wavelengths to perform multiple measurement functions simultaneously. The same light sources and scanning mechanism are used for both distance measurement (via time-of-flight) and color information acquisition (via wavelength detection), making the system multi-functional without proportionally increasing complexity.
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
The solution simplifies the configuration of the light source driving device by centralizing control and enabling efficient light emission management, allowing for precise distance measurement while reducing complexity and potential damage to light sources.
Implementation Method 1
a plurality of light sources 40 that emit a plurality of laser beams L1 to L3 having different wavelengths
Implementation Method 2
detecting light reflected by the object
Data Source
AI summary
The configuration of a light source driving device, which drives a plurality of light sources that emit light to an object to measure the distance to the object, is simplified. A light source device drives a plurality of light sources provided in a system that measures the distance to the object. The light source driving device is provided in the light source device. The light source driving device includes a light source control unit that individually controls emission of light from a plurality of light sources that emit the light to an object to measure a distance to the object.