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Optoelectronics/Displays??

Green-LED flash aids auto-focus digicams in the dark

Posted: 09 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:LED? flash? digicam? Avago? auto focus?

Green-LED auxiliary flash from Avago

Avago Technologies has introduced a green, high-brightness auto focus auxiliary flash LED to assist the auto focusing function in digicams used in low ambient light conditions. With a footprint about the size of a pencil eraser, the ASMT-FG10 auto focus auxiliary flash LED provides designers of digicams with a low-cost alternative to conventional IR auxiliary auto focus solutions.

Easy installation
According to the company, this compact green LED lamp is easy to install, offers the highest brightness and most compact package in the industry, and targets DSC designers who need a cost-effective solution that can perform auto focusing functions in dark environments.

digicams have twice the sensitivity when responding to the color green than other colors due to the availability of more photo diodes allocated for green in each pixel. The ASMT-FG10 SMT LED allows designers to package far greater functionality per square-inch of PCB space while achieving high performance in terms of brightness and power consumption. In addition, this SMT LED package simplifies the assembly process. As a result, design engineers can expect cost savings and better performance of the overall camera system.

Untinted, diffused lens
The ASMT-FG10 green (530nm) InGaN dome LED lamp uses an untinted, non-diffused lens to provide high luminous intensity within a narrow radiation pattern. It incorporates an encapsulated LED chip on an axial lead frame to form a molded epoxy lamp package with six bended leads for surface mounting. The InGaN material used has a high luminous efficiency and is capable of producing high light output over a wide range of drive currents. The narrow angle SMT lamp package is suitable for digicams that require long distance illumination and a narrow beam pattern.




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