Osram Opto Semiconductors’ two SMT proximity sensors (SFH7740 and SFH7741) use distance measurements to detect a mobile device’s operating status without physical contact to the sensor itself.
This allows automatic shut-off of displays and keypads when no longer needed. The sensors can also be used to adjust the volume of the device’s speakers.
The SFH7740 proximity device with optical touch switch reacts to distances between 0.5 and 4.0 mm, allowing it to be integrated into unusual designs, such as extremely low-profile devices.
The SFH7741 reacts at a typical working distance of 20 mm.
It can help save energy in digital cameras, switching off the display lighting whenever users handhold the camera up to their eyes and use the viewfinder instead of the screen.
The sensors draw a current of 50 µA (approximately). They make use of integrated ambient light suppression and operate in all lighting conditions.
Phone: 02 9481 8399
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