Thursday, June 21, 2018
Publication Date: 02/1/2010
Archive >  February 2010 Issue >  New Products > 

MicroE Intros Hi-Res Optical Linear Encoder
Optical linear encoder.
Bedford, MA — MicroE Systems' new Mercury II 5000 is a miniature, high-resolution optical encoder that reportedly gives motion system designers superior performance, accuracy, versatility, ease of use and low cost of ownership compared to other encoders in its class.

Designed for the next-generation of precision manufacturing, inspection, metrology and medical equipment, its excellent short-range accuracy (cyclic error), up to ±20 nanometers, ensures smooth velocity control. Resolution is programmable and ranges from 5µm to 1.2nm, linear, fitting a wide range of requirements. High speed applications are supported by new, faster A-quad-B output, providing up to 5m/s at 0.1µm resolution and a maximum speed of 10m/s — the fastest A-quad-B encoder in its category. In addition, the encoder's compact sensor is only 11mm high, enabling smaller, faster motion systems.

All electronics are integrated in the unit's sensor, including programmable interpolation. This enables digital output right from the sensor with no electronics in the connector, giving users higher system reliability, smaller footprint, faster system integration and a variety of connector options — including customer specific configurations.

Fast setup with minimal skill is achieved with the encoder's optical system, which has the broadest alignment tolerances of any 20µm-pitch encoder. According to the company, rotational tolerance about the Z axis is ±2° — fully 300 percent better than the next best competitive encoder — and ride height tolerance is ample at ±0.15mm.

The adhesive-mount PurePrecision tape scales are designed for accuracy, robustness, and rapid installation. This is due to MicroE Systems' PurePrecision system, which allows the installer to cut any required length from a reel; adhesive backing and a special application tool do the rest, making installation fast and accurate. Linear glass scales satisfy applications requiring high long-range accuracy — up to ±1µm.

The tape scale system effectively addresses the requirement for an index that can be placed anywhere. In contrast to magnetic Hall sensors, which are large and time-consuming to install, Mercury II has the first and only stick-on optical index and limits. The index is bi-directional and provides 1 LSB repeatability at all speeds, while fail-safe left and right optical limits enhance safety and reduce cabling.

Contact: MicroE Systems, 125 Middlesex Turnpike, Bedford, MA 01730 781-266-5750 fax: 781-266-5112 E-mail: Web:

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