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Photo reflector handles auto focus function in cellphones

Posted: 14 Oct 2008 ?? ?Print Version ?Bookmark and Share

Keywords:photo reflector? image sensor? IR LED?

NJL5904R

New Japan Radio Co. Ltd has launched the NJL5904R chip on board package photo reflector for auto focus (AF) function in camera phones.

NJL5904R is a reflective sensor with IR LEDs and phototransistors that achieves 0.7mm of detection distance, offering better linearity due to optimization of photo detector.

The device will not be affected by the magnetism of ambient motors and speakers, allowing less design constraints in certain products. In addition, NJL5904R does not include Halogen-substance and applies compact surface mount PKG.

The photo reflector also minimizes fluctuation of position accuracy in AF lens and is suitable for positioning detection of AF lens for camera module of mobile handsets.





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