Vishay OPTO Squad

Part 3 of “A Brief History and Evolution of Automotive Transmissive Sensors”

The TCPT- and TCUT1600X01 Period

Imagine the lowly knob on your dashboard which controls the radio volume or the menu of your control display. It is an appendage that commands little thought when not being turned or pushed. Yet lately Vishay Opto has given that knob a great deal of thought, especially that push TCUT1600X01function. Back in the day, designers could use the TCPT1300X01 sensor to determine the position of the knob but would have to design completely separate circuitry for the push. Not anymore. The transmissive sensor has evolved further to the TCPT- and TCUT1600X01 which has a deeper channel that enables design engineers to redesign their code wheel to include a push function. The channel still has a gap width of 3mm and two detector windows, but the depth has increased from 2.8mm to 4.5mm.

The TCPT- and TCUT1630X01 Period

While the increased dome height of 4.5mm will be sufficient for some applications, automotive customers need the added capability to be able to change the resulting action depending on the position of the knob when it is pushed. To fully meet this requirement, a third detector and third window has been added. The overall size of the sensor has increased to enable this additional feature. While it is a 3-channel transmissive sensor, it is still an incremental encoder.

Tune in for Part 4 the Final Episode: The Fully Evolved TCUT1800X01

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This entry was posted on November 9, 2015 by in Articles, Infrared Emitter, Photo Detectors.
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