LH3000 Dual-Frequency Laser Interferometer
A high-performance portable precision calibration system uses dual-frequency lasers for accurate measurements, compactness for field service and strong interference immunity, maintaining stable accuracy over long distances on large machine tools. The dual-frequency interferometer is a heterodyne development of single-frequency interferometry. Single-frequency systems suffer DC-level changes from even slight air turbulence, especially in harsh environments or long-distance measurements. Dual-frequency systems overcome this: Their interference signal is AC at about 1.5-8MHz; moving the prism changes frequency by△f while preserving an AC signal. This frequency change follows prism displacement and is unaffected by DC optical/electrical levels. Heterodyne operation is inherently stable and environmentally resistant for workshop use. Leice Technology's LH3000 uses core technology developed over years by Professor Zhang Shulian's Tsinghua team, with independent intellectual property and performance matching or exceeding overseas equivalents. Different optics enable linear, angular, straightness, squareness, parallelism and flatness measurements. It efficiently measures precision displacement and calibrates CNC machines, coordinate-measuring machines and optical tables.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Dual-Frequency Laser Frequency Difference [±0.5MHz] | 7±0.5MHz |
| Laser Frequency Stabilization Accuracy | ±0.03ppm |
| Vacuum Wavelength | 632.99nm |
| Laser Power | >0.5mW |
| Laser Beam diameter | 6mm |
| Wavelength Compensation Accuracy | ±0.4ppm |
| Warm-Up Time | <10 minutes |
| Dual-Frequency Laser Head Dimensions (Weight) | 230mmx125mmx80mm(2.60kg) |
| Measurement Length Range | 0-40m |
| Measurement Accuracy (Using LC-2000 Environmental Compensator) [With the LC-2000 environmental compensator; accuracy excludes errors associated with normalizing material temperature to 20℃.] | ±0.4ppm (±0.4μm/m) |
| Specified Accuracy Range | 0℃-40℃ |
| Resolution | 1nm |
| Maximum Measurement Speed | 2m/s |
| System Measurement Capability | Linear 、 Angle 、 Straightness 、 Perpendicularity 、 Parallelism 、 Flatness |
| Interface | Built-In USB Communication Port, No Separate Interface Required |
| Trigger pulse input | Yes |
| Dynamic Acquisition Frequency | 0.1Hz-100kHz |
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Key Features
Datasheet
Supplier Information
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