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Reflective Object Sensor

Feb 2010
Optek Technology, Industrial Sensing & ControlRequest Info
TT electronics Optek Technology has launched the OPB733TR reflective object sensor for a variety of medical equipment. Measuring 7.62 x 4.06 mm with a PC board-mounted profile of 2.9 mm, the device incorporates a lensed infrared LED and phototransistor element to collimate the light beam for enhanced resolution at a detection range from 10 to 25.4 mm. The sensor’s LED delivers typical peak emission wavelengths of 890 nm and is mounted alongside a negative-positive-negative silicon phototransistor that responds to light reflected by the object being sensed. Its phototransistor output on-state collector current is 0.1 mA at a 1/2-in. distance from the target. Its rise and fall time is typically 15 µs. The surface-mount package is reflow solder-compatible to 260 °C.


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1. The process of aligning the optical axes of optical systems to the reference mechanical axes or surfaces of an instrument. 2. The adjustment of two or more optical axes with respect to each other. 3. The process by which a divergent beam of radiation or particles is converted into a parallel beam.
1. A generic term for detector. 2. A complete optical/mechanical/electronic system that contains some form of radiation detector.
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