Low-cost cell-phone-based digital lux meter

Sarun Sumriddetchkajorn; Armote Somboonkaew

doi:10.1117/12.870176

9 November 2010 Low-cost cell-phone-based digital lux meter

Sarun Sumriddetchkajorn, Armote Somboonkaew

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78530L (2010) https://doi.org/10.1117/12.870176
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The amount of light is an important issue in several scenarios ranging from scenic design, light pollution study, illumination engineering, and agriculture. It is typically determined by using a portable digital light or lux meter. By realizing that the proliferation of cell phones is currently tremendous, this paper proposes for the first time a low-cost cell phone based digital light meter. Our innovative idea comes from the fact that the digital camera built into the cell phone is functioned as a two-dimensional light sensitive device and the captured image can be made diffuse. In this way, the diffused image is correlated to the corresponding light level by the built-in microprocessor of the cell phone and our specific algorithm embedded. Our experiment using a typical cell phone embedded with a digital camera and our JAVA program will be discussed.

Citation Download Citation

Sarun Sumriddetchkajorn and Armote Somboonkaew "Low-cost cell-phone-based digital lux meter", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78530L (9 November 2010); https://doi.org/10.1117/12.870176

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