Geophysical Laser Rangefinders

The Geophysical Laser Altimeter is a modified Universal Laser Sensor for use in magnetic environments. The back panel has been replaced with one that has no metal connectors and all fasteners have been replaced with brass. The standard housing is anodized aluminum. One cable with flying leads or a DB9 connector comes out of the back panel. This cable contains power and signal.

Product Specifications

Measurement laser:
Wavelength: 905 nm (infrared)
3 power settings: 400 nJ, 200 nJ and 100 nJ per pulse
Average power: proportional to laser pulse firing rate
Eye safety: Class I, 7mm (FDA, CFR21)
Class I M (IEC 60825-1: 2001)
Beam divergence: 3 milliradians (~ 0.3 m @ 100 m)
Aiming laser (for alignment only):
Wavelength: 650 nm (visible red)
Eye safety: Class IIm (FDA, CFR21)
Activation: software controlled
Average output power: 1mW


Non-cooperative target: +/- 2 cm typical
Cooperative target: +/- 1 cm typical

Max. range (high power):

90% target reflectivity: 450m
20% target reflectivity: 225m
Cooperative target: 1664m

Optical sighting scope (optional):

Zoom: 1.5-4 x 16
Input power:
Absolute min/max: 10 – 30V DC
Nominal: 12 – 24V DC
Max. current: 170 mA


Serial interface: RS232, RS485
Analog output: 4-20 mA (convert to voltage)
Cable: one cable out of back panel with flying leads or DB9 connector.
Custom cable lengths available.


Dimensions: 5.3″ L x 4.75″ W x 2.5″ H / (13.5 cm x 12 cm x 6.3 cm)
Weight: 1.75 lbs (800 g)
Enclosure: anodized Aluminum
Mounting: 75 mm hole spacing front/back and 110 mm spacing side/side (four hole pattern)


Sealing: IP 54
Temperature: -22° F to +140° F (-30° C to +60° C)
Shock/vibration: MIL-STD-810E