50nm Confocal Displacement Sensor with 9μm Spot

Product Overview

POMEAS SFS-D2615 is a high-precision spectral confocal displacement sensor with a 15 mm reference distance, ±1.3 mm measuring range, 50 nm repeatability and ±0.26 μm linearity error. The ±31° measuring angle keeps stable output on curved and inclined surfaces, and the non-contact optical measurement avoids scratching precision workpieces. Its Φ36×97.9 mm body weighing about 228 g is easy to mount and integrate.

Key Features

• 50 nm repeatability, linearity error <±0.26 μm
• ±1.3 mm measuring range, 2.6 mm total travel
• ±31° wide measuring angle for curved and inclined surfaces
• Φ9/18/144 μm three-mode spot
• Non-contact measurement, no damage to precision surfaces
• Minimum measurable thickness 5% F.S., supports transparent materials
• Temperature drift <0.03% F.S./°C, IP40

Technical Specifications

Applications

Ideal for precision part displacement and height measurement, transparent glass and film thickness measurement, curved-surface step inspection and surface contour scanning.

FAQ

What is the precision of the SFS-D2615?

Repeatability is 50 nm and linearity error is <±0.26 μm (verified with a nanometer-grade laser interferometer), with a ±31° measuring angle.

What are the measuring range and reference distance?

Reference distance 15 mm, measuring range ±1.3 mm (2.6 mm total travel, centered on the range midpoint).

Can it measure transparent materials?

Yes. The confocal principle focuses on the upper and lower surfaces of transparent materials separately; the minimum measurable thickness is 5% F.S., suitable for glass and film.

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