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Optical Switch Photo IC

Photonics.com
Dec 2010
Hamamatsu Photonics UK Ltd.Request Info
 
WELWYN GARDEN CITY, England, Dec. 8, 2010 — Hamamatsu Photonics UK Ltd. has introduced a new Photo IC, the S11067-01CT angle sensor that directly processes absolute angle information into digital data.

Photo ICs combine a photodiode with signal processing electronics in an integrated circuit (IC) package. They simplify design, reduce space on the printed circuit board and lower production costs. They are used for ambient light detection, laser beam detection in printers, distance measurement, optical communications and as photinterrupters operating in strong ambient light.

An encoder can be made using a rotating plate with a semicircular slit in conjunction with an LED and the S11067-01CT. Light from the LED passes through the slit, illuminating the 720 fan-shaped elements of the circular photodiode array. The digital data is output serially to provide absolute angle information. The S11067-01CT has a high angular resolution of 0.25°.

The surface-mount device package measures 4.5 × 4.5 × 1.6 mm, creating a very small footprint. This, and the low cost of the sensor, makes it suitable for high-volume applications. Included in the S11067-01CT are fail-safe and sleep functions.

Applications include automotive steering angle sensors, tilt detectors in digital cameras and various encoders.


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GLOSSARY
optical communications
The transmission and reception of information by optical devices and sensors.
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