Linear Encoder

SMG20 Incremental Optical Encoder

The Peak Performance of Miniature Optical Encoders  
Designed for Ultra-High Vacuum and Extreme Conditions

0.5nm Resolution | 20µm Grating Pitch | Ultra-High Vacuum Compatible

The SMG20 series launched by ZEPTOOLS redefines the standard for precision measurement in space-constrained scenarios with its ultra-compact miniature package structure of 5mm × 12mm × 21mm. It adopts diffraction image reflective detection technology, combined with a high-sensitivity photodiode detector array, to output extremely stable signals even when installation precision fluctuates.

It is born tough, featuring high-temperature-resistant PTFE (Teflon) outer sheath cables and a semi-enclosed design, with an extremely low outgassing rate. It not only adapts to a wide operating temperature range of -40℃ to +100℃, but also supports 100℃ high-temperature baking, making it an ideal choice for high-vacuum and ultra-high vacuum precision equipment.

Main Technical Specifications

Miniature Package, Powerful Core

Resolution: 0.5nm (up to 40000x interpolation, sub-nanometer positioning)

Grating Pitch: 20µm (diffraction image reflective detection, strong anti-interference)

Package Size: 5mm × 12mm × 21mm ultra-compact miniature structure

Operating Temperature: -40℃ to +100℃ (supports 100℃ high-temperature baking)

Vacuum Compatibility: Supports high vacuum and ultra-high vacuum, cables withstand 100℃ baking

Signal Output: Incremental A / B / Z quadrature signals

Product Models

Two Scale Specifications, Flexible Selection

Steel Belt Scale: Stainless steel material, maximum length 1000mm, suitable for long-travel measurement

Glass Scale: Glass material, length 80~110mm, suitable for high-precision short-travel applications

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Applications

Ultra-Compact Package, Empowering Extreme Conditions

With its ultra-compact miniature package and excellent vacuum compatibility, the SMG20 Incremental Optical Encoder is widely used in high-vacuum and ultra-high vacuum precision equipment, semiconductor manufacturing, space-constrained precision measurement scenarios, and various scientific research and industrial fields that have stringent requirements for size, stability, and cleanliness.

Some of Our Customers

Trusted by Numerous Universities, Research Institutions, and Enterprises

Start a New Era of Precision Control

Independently Developed by ZEPTOOLS, Built for High-End Applications

Call Us +86-400-966-2800

Email Us micage@zeptools.com