1.5 µm Diode Laser Rangefinder DLEM 20Eye-safe, high precision rangefinder for system integration

Sensors

Powerful, accurate, and reliableThe DLEM 20 diode laser rangefinder module measures

distances to non-cooperative targets up to 5 kilometers

with sub-meter accuracy. Due to its extremely compact

design, DLEM 20 is the smallest and most lightweight

range finder in its class.

DLEM 20 can measure very low to very high reflecting

targets without degradation of accuracy. It is optimized for

low power consumption and operation at elevated tem-

peratures. Single measurements can be performed as well

as continuous target tracking with up to 25 Hz.

DLEM 20 operates at 1.5 µm wavelength and is an eye-safe

class 1 laser device. The emitted wavelength is invisible to

the human eye and to detectors based on I² night vision

technology, making DLEM 20 ideal for tactical use.

Compact, robust, and easy to integrateThe compact design and different mounting options

enable easy integration into various volume-restricted or

handheld systems. Its wide operational temperature range

and rugged design recommends DLEM 20 for weapon

mounted equipment. The single power and two-wire

communication interface that is identical for the entire

DLEM family makes upgrading to another DLEM model

easy and saves integration efforts.

Benefits• Compact: extremely small and lightweight

• Energy-efficient: very low power consumption

• Fast & precise: tracking up to 25 Hz @ 0.5 m accuracy

• Reliable and designed for very high MTBF

• Eye-safe: Laser class 1; NOHD = 0 m

JENOPTIK I Defense & Civil SystemsESW GmbH – Business Unit SensorsPruessingstrasse 41 I 07745 Jena I GermanyPhone +49 3641 65-3041 I Fax -3573sensorsystems.dcs@jenoptik.com www.jenoptik.com

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1.5 µm Diode Laser Rangefinder DLEM 20Eye-safe, high precision rangefinder for system integration

Specifications

It is our policy to constantly improve the design and specifications. Accordingly, the details represented herein cannot be regarded as final and binding.

(22)

33,5

max. 44

max. 50

22

7

14

11

7,4 20Thread M3 (3x)

Mounting Surface

Mounting Surface alternative

Dimensions DLEM 20

Typical Applications• Hand-held or weapon-mounted fire control systems

• UAV based multi sensor platforms

• Border and perimeter control

• Remote weapon stations

• Micro gimbals

• Dazzler safety

• Space and satellite applications

... and many more

Total measurement range 0 ... 5 000 m

Typical measuring rangeMan size target 1

NATO standard target 2

Extended target 3

≥ 2 000 m≥ 3 000 m≥ 4 500 m

Measurement accuracy ≤ 0.5 m

Measurement resolution 0.1 m

False alarm rate < 1 %

Target discrimination 5 targets

Multiple target discrimination ≤ 25 m

Measurement modes Single measurement, continuous ranging 1 ... 25 Hz

Measurement time (selectable) 100 ... 3 000 ms

Range gate resolution 1 m1) 0.75 m × 0.75 m, 30 % Albedo, 10 km visibility2) 2.3 m × 2.3 m, 30 % Albedo, 10 km visibility3) 6 m × 6 m, 50 % Albedo, 23 km visibility

Measurement principle Pulse accumulation

Transmitter Diode laser

Wavelength (nominal @ 20 °C) 1.55 µm

Divergence < 1 mrad

Laser classification Laser Class 1 according to IEC 60825-1:2014 and ANSI Z136.1 (2014)

Receiver APD

Data interface UART (LVTTL 3.3 V)

Interface connector Molex # 53261 - 0671 (connects to # 51021-0600)

Input voltage range 2 ... 5.5 VDC (optional: 4 ... 16 VDC)

Power consumption stand-byoperation

≤ 0.01 W≤ 1.8 W (during measurement)

Weight ≤ 33 g

Dimensions (L × W × H) 50 mm × 22 mm × 34 mm

Operation temperature - 40 °C ... + 80 °C

Storage temperature - 46 °C ... + 85 °C

Shock resistance 1 500 g, 0.7 ms

Distributor for USAInternational Defense & Security Solutions, Inc. 140B Purcellville Gateway Dr. #518 Purcellville, VA 20132, USAPhone 1.540.751.0753 I Fax 571.699.2466 info@idssi.com I www.idssi.com