laser tracker
Leica AT401
The Leica Absolute Tracker AT401 redefines portability and efficiency in 3D measurement. Engineered for both traditional inspection and fully guided measurement workflows, this all-in-one large-volume laser tracker combines rugged construction, user-friendly operation, and high measurement performance in a compact, highly portable design.
Measurement volume of up to Ø320 m
Durable IP54-sealed housing for dust and splash protection
Ultra-lightweight design at just 8.1 kg including controller
High-precision performance: 15 µm ± 6 µm/m accuracy
Advanced gravity-based leveling for highly accurate alignment
Integrated environmental sensors ensure consistent measurement accuracy in changing conditions
Leica AT401
features
All-in-One Compact Design
The AT401 integrates all essential features into a single unit—from built-in wireless connectivity, environmental monitoring, and hot-swappable battery power, to an overview camera, RapidSight aim scope, and ergonomic carry handle—for unmatched portability and ease of use.
Compact Probing Solution
Everything fits in one case: the lightweight tracker, probe, IR remote, and optional transport cases for flexible, easy deployment anywhere.
Seamless Smart Connectivity
With built-in WiFi and access point functionality, the system supports simple PC setup and remote operation via laptop, tablet, or smartphone—ideal for single-user workflows.
Wireless Battery Operation
Dual hot-swappable batteries provide a fully cable-free setup and enable uninterrupted all-day use.
Dust- and Water-Resistant
Certified to IP54 standards, the tracker is sealed to withstand dust and moisture, ensuring reliable operation in harsh industrial environments.
Built-in Environmental Sensing
The integrated MeteoStation constantly tracks ambient temperature, pressure, and humidity to compensate for environmental changes and maintain accuracy.
PowerLock Reacquisition
PowerLock technology automatically reacquires lost line of sight over a wide field without any user intervention.
Extended Measurement Range
Covers an exceptionally large working volume of up to 320 meters in diameter, with a minimum measurement distance of just 0.8 meters.
Gravity-Oriented Measurement
The Orient-to-Gravity function aligns the Z-axis with gravity, making it perfect for leveling and alignment applications.
Real-Time Measurement
Features continuous time and distance tracking for dynamic measurement tasks.
Broad Operating Temperature
Designed for tough conditions, the system functions reliably between -15°C and 45°C.
Leica AT401
technical data
Dimensions
Sensor Size: 290 x 221 x 188 mm (11.4” x 8.7” x 7.4“)
Sensor Weight: 7.3 kg (16 lbs)
Controller Size: 250 x 112 x 63 mm (9.8” x 4.4” x 2.5”)
Controller Weight: 0.8 kg (1.75 lbs)
Range
Infinite Horizontal Rotation:+/-360 ̊
Infinite Vertical Rotation:+/- 145 ̊
Typical working Volume: 320 m
Environmental
Dust/Water: IP54 (IEC 60529)
Operating Temperature: 0 ̊C to +40 ̊C
Relative Humidity: Max. 95% (non-condensing)
Altitude: -700 to 5500 m (-2,300 to 18,000 ft) Motorization
Acceleration: 360 ̊/s2
Rotation Speed: 180 ̊/s
PowerLock: 10 ̊ FOV
Absolute Angular Performance
Resolution: 0.07 arc Seconds
Accuracy (MPE):+/- 15 μm + 6 μm/m (+/- 0.0006” + 0.00007”/ft)
Repeatability (MPE):+/- 7.5 μm + 3 μm/m (+/-0.0003” + 0.00004”/ft)
Inclination Setting Accuracy (2σ):+/- 1 arc second
Absolute Distance Performance
Resolution: 0.1 μm
Accuracy (MPE):+/- 10 μm (+/- 0.00039”)
Repeatability (MPE):+/- 5 μm (+/- 0.0002”)
Laser Emission Class 2 Laser Product in accordance with the IEC 60825-1 Second Edition (2007-03) General Information
Overview Camera (OVC) 4:3 IR enhanced Image ≈10 ̊ FOV
Environmental Monitor Internal – Temperature, Pressure and Humidity External – Air Temperature – Object Temperature
Remote Control Integrated 4 Button IR
Interfaces Cable – TC P/IP (Cat5) Wireless – WLAN (IEEE 802.11g)
Power Management Internal – lithium-ion battery External – AC power supply Optional –Power Over Ethernet (PoE+)