Segmented LED Light Source Module for Precise Light Distribution
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Solution Overview
Problem
Existing semiconductor light-emitting devices used in vehicle headlights and tail lights face challenges in adjusting brightness and light orientation angles to meet varying environmental conditions, necessitating improved optical characteristics and reliability.
Innovation Solution
A light-emitting device with electrically isolated cell blocks and controllers, arranged in specific configurations to allow for precise control of light distribution, reducing unnecessary light emission and optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a semiconductor light-emitting device is applied as a light source to a lighting apparatus, then low power consumption and high brightness are achieved, but brightness adjustment and light orientation angle adjustment to desired values become necessary
Solution Approach 1:
The light-emitting device is divided into multiple cell blocks (first cell block, second cell block, third cell block) with different numbers of light-emitting cells. Each cell block can be independently controlled by separate controllers, enabling granular brightness adjustment and light distribution control without requiring complex adjustments to the entire device.
2Illumination intensity
If multiple cell blocks with different numbers of light-emitting cells are used, then brightness control and light distribution are improved, but device complexity increases
Solution Approach 1:
Different cell blocks are designed with different numbers of light-emitting cells (first cell block has fewer cells than second cell block, which has fewer than third cell block) to create local variations in light emission. This allows specific areas to emit different amounts of light based on local requirements, improving overall brightness control while maintaining a relatively simple structure through systematic variation rather than complex individual control of each cell.
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
Enhances brightness control speed and reduces power consumption by concentrating light emission in desired areas, improving optical characteristics and reliability.
Implementation Method 1
Semiconductor light-emitting devices include elements such as light-emitting diodes (LEDs)
Data Source
AI summary
A light source module is provided. The light source module includes a printed circuit board; a light-emitting device mounted on the printed circuit board, the light-emitting device including a plurality of cell blocks, each of which includes a plurality of light-emitting cells; and a plurality of controllers mounted on the printed circuit board, each of which is configured to drive a cell block corresponding thereto, from among the plurality of cell blocks. The plurality of cell blocks are electrically isolated from each other, the plurality of cell blocks include a first cell block and a second cell block, and a number of first light-emitting cells included in the first cell block is less than a number of second light-emitting cells included in the second cell block.