Magnescale BH25 Linear Laserscale

File Download

Link

High‑Accuracy Reflective Linear Encoder for Compact Precision Systems

The BH25 is a high‑accuracy reflective Laserscale designed for precision positioning in compact and low‑profile applications.

Utilising a laser interferometric principle with reflective scanning, it provides stable, high‑resolution measurement in environments where space, accuracy, and reliability are critical.

Key features

High accuracy over practical ranges– Delivers accuracy down to ±1 μm over 420 mm, ensuring reliable precision
High resolution capability – Achieves resolutions down to 3.8 pm when paired with an interpolator (e.g. BD700)
Compact, low‑profile design – Thin 12 mm head makes it ideal for space‑constrained systems
High response speed – Supports speeds up to 1,800 mm/s for dynamic positioning
Non‑contact measurement – Eliminates return error and ensures long-term stability

Metal electrical sensor mounted on a yellow strip with a black cable attached to its side.

Magnescale BH25 Linear Laserscale configuration

How it works

The BH25 uses a diffraction grating interferometric system with a reflective optical design.

Signal pitch of 250 nm enables high‑quality measurement signals
Reflective scale design allows for compact integration
When combined with an interpolator such as the BD700, extremely high resolutions are achieved

This results in: