LRF4

High-Precision LRF (Laser Range Finder) with 4.2km Extended Range

4km Extended Range Laser Rangefinder

Our laser range finders use advanced technology developed for the military to accurately measure the distance to a target. LRFs work by pulsing laser light in the SWIR wavelengths towards a target. A receiver then detects the reflection of that light and accurately calculates the distance based on the time it took for the light to bounce back.

This weapons-grade LRF provides an accuracy as good as 10–150cm, with an extended range up to 4.2km in ideal conditions. The 1530nm solid state SWIR micro laser provides short, high-pulse energy pulses, with diffraction-limited beam quality and low divergence, resulting in superior range and performance.

LRFs are used in a host of applications such as weapon targeting, advanced tracking, autonomous cars and geo locking surveillance. Our LRFs utilize low-noise, high-efficiency photoreceivers that have been designed and optimized for ranging. The customized electronics are designed to improve accuracy performance while reducing false reflections and echoes.

Infiniti uses high quality weapons-grade LRFs, however they still suffer from problems and limitations common to the technology that affect all LRFs. For more info, please see our LRF Whitepaper on Ranging Performance.

4.2
km
Extended Range
3.5
km
Range to Vehicle*
2.0
km
Range to Human*
Specifications
Extended Range4.2km
Range to Vehicle*3.5km to NATO Vehicle (2.3 × 2.3m)
Range to Human*2.0km to Human (0.5 × 1.8m)
Wavelength1530nm (±5)
Single Measurement Time< 0.03s
Continuous Measurement1–10 Hz (adjustable)
Precision**0.1–1.5m
False Detection Rate< 1%
Beam Divergence0.035°
Target Distinction20m
Range Gating Resolution1m
Alignment LaserYes
Laser ClassClass 1 (eye safe)
Power Consumption< 2W
Lifetime MTBF†At least 1500 hours
Serial InterfaceUART (TTL 3.3V)
Operating Temperature-40°C to +70°C
Dimensions49mm × 32mm × 26mm
Weight34g

*Range performance is dependent on distance and target reflectivity. Target visibility 25km, maximum measuring time, target reflectivity 30%, detection probability 90%. Depending on received signal level. Up to three (3) targets: First, Second and Third.

**LRF accuracy is based on ideal conditions.

†Based on assumptions.