Luxeon Flash for Cell Phone Camera, PDA and DSC Applications
This reference design outlines the key considerations in the construction of a solid state, high performance flash solution utilizing Luxeon® LED technology. This design integrates Lumileds high power Luxeon Flash product with a cost effective lens solution to provide the necessary light output and illumination pattern suited to digital still camera (DSC) and cell phone camera flash applications. An example of a Luxeon Flash implementation is described and the expected practical output performance is summarized.
Additional recommendations considering the mechanical design, thermal management and electronic drive circuitry are provided to assist rapid design and development of a functional camera flash solution for space constrained applications such as cell phones and PDAs. Finally, the light output color spectrum of the Luxeon Flash is compared to requirements for expected use in combination with CMOS and CCD image sensors.
Lumileds Lighting offers the Luxeon Flash for camera phone, PDA and DSC flash applications. The total design depth required for the Luxeon Flash System is less than 2.6 mm in combination with the secondary lens. In this configuration Luxeon Flash produces significantly more light than conventional LED sources.
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