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Seiko Epson and NGK Insulators have jointly developed what is claimed as the smallest gyro-sensor of its kind in the world based on quartz crystal technology.
Seiko Epson and NGK Insulators have jointly developed what is claimed as the smallest gyro-sensor of its kind in the world based on quartz crystal technology. The move is the first step for Epson in looking for uses beyond the conventional quartz crystal oscillator timing-device market. The XV-3500CB angular velocity sensor is scheduled to enter volume production in December 2004. Epson describes the device as its "first salvo in a battle to expand the scope of its quartz crystal device business".

The sensor boasts unprecedented stability thanks, says Epson, to the use of mono-crystalline quartz for the newly developed gyro element. Combining Epson's original crystal microprocessing technology with a low-power analogue circuit and packaging technology has created a gyro sensor measuring 5.0x3.2x1.3mm, making it the world's smallest gyro-sensor with built-in drive circuitry. The first subminiature angular velocity sensor is designed for use in systems that correct for camera vibrations.

Going forward, the company's efforts will be directed further toward the development of other products using motion detection sensors. Product development efforts will range from game machines, remote-control security devices, at the low end, all the way to navigation systems, attitude-control (gyroscope) applications and similar systems, at the high end.

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