LRF-735-50

High-Precision Laser Rangefinder

Our laser range finder uses 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. Infiniti uses weapons-grade LRFs that provide an accuracy of 50–175mm, with ranges up to 20km in good conditions. These LRFs are used in a host of applications such as weapon targeting, advanced tracking, autonomous cars and geo locking surveillance.

Our EDPSS erbium-glass diode-pumped solid-state SWIR micro lasers provide short, high-pulse-energy pulses, with diffraction-limited beam quality and low divergence, resulting in superior range and performance. Our EDPSS eye safe lasers range in power from 100–735μJ at a wavelength of 1535nm (±2) with single- and multi-pulse while offering industry-leading SWaP (Size Weight and Power).

Our LRFs utilize low-noise, high-efficiency ADP InGaAs photoreceivers that have been designed and optimized for ranging. The customized electronics reduce the amount of reflection by a factor of 20 compared to traditional PIN photodiode receivers. Our InGaAs receiver is 500% more sensitive than the leading competitor’s ADP photoreceivers. This increased sensitivity results in longer range, higher accuracy, and mitigates the effects of impact ionization that is exacerbated by hot climates.

Sensor Fusion Board

Infiniti has an optional 9-axis IMU/MEMS sensor that includes a 3-axis accelerometer, 3-axis DMC (digital magnetic compass) and 3-axis MEMS gyroscope. The MEMS rate gyroscope senses motion, the accelerometer detects acceleration, and the DMC detects the magnitude of the local magnetic field, each component detecting in the X, Y, and Z axes.

Our custom fusion board aggregates our IMU/MEMS sensors or third-party systems and combines that data with the range information of the LRF and GPS geolocation of targets for extremely accurate heading and positioning. The sensor fusion board continuously calibrates each sensor to ensure the readings are accurate by cross-referencing the results. The data can also be accessed for other operations such as improving DIS (Digital Image Stabilization) with the MEMS sensor data, accounting for ferrous metals affecting the compass, or keeping track of the orientation of the pan/tilt.

Specifications

Laser Pulse Energy

735μJ

Aperture Diameter

50mm

Multi-Pulse Range

13km NATO standard, 23km extended

Single-Pulse Range

12km NATO standard, 20km extended

Max Returns Per Pulse

10

Maximum Target Separation

5m

Range Precision

150mm Single Pulse, 50mm Multi-Pulse

Minimum Range 10m
Laser Source

Erbium-Glass Diode-Pumped Solid State

Wavelength

1534nm (±5nm)

Eye Safe Range Eye Safe
Photoreceiver ADP InGaAs
Total Dynamic Range 70dB
Linear Dynamic Range 25dB
APD Gain (M) 1–20X
Temperature -45° to +65°C
Lifetime (MTTF) 45–50 million shots