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LinkThe BS78 is a high‑performance linear Laserscale designed for ultra‑precision measurement and positioning in advanced manufacturing and metrology applications.
Using laser interferometric technology, it delivers exceptional resolution, accuracy, and stability, making it ideal for applications where conventional encoders reach their limits
Key features
- Ultra‑high resolution measurement – Achieves resolution down to 2.1 pm, enabling ultra‑fine positioning control
- Exceptional accuracy – Provides scale accuracy down to ±0.04 μm (40 mm length)
- Outstanding stability – Performance is unaffected by humidity, air pressure, or environmental disturbances
- Non‑contact measurement – Eliminates return error and ensures long‑term reliability
- Low thermal expansion – Zero‑expansion glass minimises measurement drift over temperature variations
How it works
The BS78 uses a diffraction grating interferometric principle to generate an extremely fine measurement signal.
- Signal pitch of ~138 nm enables high‑quality measurement signals
- Interpolation technology delivers resolution in the picometre range
- Non-contact optical detection ensures repeatable, stable positioning
Typical Applications
- Precision stages and motion systems
- Semiconductor inspection and manufacturing equipment
- Ultra‑precision machining
- Advanced metrology and measurement systems
Why Choose the BS78
- Ideal for ultra‑precision linear measurement
- Offers interferometer-level performance in a compact system
- Combines high speed, accuracy, and stability
- Proven solution for advanced manufacturing and research environments
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