World-Changing Technologies

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World's first tuning-fork crystal

Quietly enabled networks that span the globe

One of the core components aboard the Seiko Quartz Astron 35SQ wristwatch released in 1969 was a miniature quartz crystal resonator in the shape of a tuning fork. This tuning-fork crystal unit marks the beginning of Epson's history in crystal devices.
Quartz crystals electrically vibrate at a stable rate when they are subjected to an applied voltage. Quartz devices use this property to generate stable output at certain frequencies. Innumerable products operate at their own fixed frequencies and thus require quartz devices that provide stable outputs at these frequencies. The products include, for example, consumer electronics equipment such as PCs, smartphones, and digital cameras, industrial manufactured goods such as motor vehicles, and network products such as base stations for cellular and television communications.
Quartz devices are used in a vast range of applications. They are used as clocks that count time. They are used as references for network signals. They can even be used as sensors to detect motion or changes in acceleration and angular velocity.

Epson went on to develop a wide variety of progressively smaller yet more powerful quartz devices in the wake of the tuning-fork crystal device that was developed in conjunction with the Seiko Quartz Astron 35SQ. This made Epson the leading quartz device maker in the world. Epson's quartz devices are working quietly behind the scenes to enable everything from your PC and home electronics to global networks.