Date: 22/09/2009

CAP-XX study compares white LED flash with Xenon

Supercapacitor specialist CAP-XX has published an updated study comparing different flash light solutions based on xenon, and high-current LEDs. The light power and energy using 1.3, 3.2 and 5 megapixel camera phones are considered in this study.

Supercapacitor driven LEDs produce more light energy than most xenon flashes and also occupy less space in mobile phones and digital cameras. Xenon flash tubes produce higher light power, but over a very short flash exposure, whereas high-current LEDs driven by a supercapacitor produce lower light power, but over a longer flash exposure.

"People often wrongly assume that light power, which is the brightness or intensity of the flash, is the key because it's what draws our attention, but it's really the light energy that counts," said Pierre Mars, CAP-XX vice president of applications engineering.

"BriteFlash maximizes performance from our LUXEON Flash LEDs so that cell phone users get superior image quality," said Michel Zwanenburg, product manager, LUXEON Flash, Philips Lumileds.

For detailed test results, visit: http://www.cap-xx.com/news/photogallery.htm#FlashTable