研究目的
To design an integrating sphere using multiple white light LEDs for improved uniform illumination inside a computer laboratory room and to use these LEDs as optical transmitters for indoor optical wireless communication.
研究成果
A white light LED based integrated illumination and optical wireless communication system has been theoretically designed and developed utilizing the properties of uniform reflection and wide angle diffusion from the external and internal curved surfaces of an integrating sphere. The system is expected to provide additional benefits due to possible compact arrangements of electronic drive and control circuits surrounding a single device.
研究不足
The system's performance may be affected by variations in the dimming level of light in the integrating sphere. The bandwidth of the blue LED is limited to 20-30 MHz, which could be a bottleneck for high-speed data communications.
1：Experimental Design and Method Selection:
The design involves mounting multiple white light LEDs on both the inner and outer surfaces of an integrating sphere to create uniform illumination. The LEDs are also used for optical wireless communication.
2：Sample Selection and Data Sources:
High power white-light LEDs and IR LEDs are used for illumination and communication respectively.
3：List of Experimental Equipment and Materials:
Integrating sphere, white light LEDs, IR LEDs, silicon photodiodes, and electronic drive circuits.
4：Experimental Procedures and Operational Workflow:
LEDs are mounted on the integrating sphere, and electronic systems are designed for automated operation of the illumination and communication system.
5：Data Analysis Methods:
The performance of the system is analyzed based on the uniformity of illumination and the quality of the optical wireless communication link.
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