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Laser Rangefinders—Eyesafe

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Answering the previously unmet need for a cost-effective eyesafe laser rangefinder (LRF), our new class of compact, eyesafe LRFs offers the highest performance at a fraction of the cost and is sufficiently small and lightweight for handheld, weapon-mounted, or unmanned vehicle integration. This new class of eyesafe LRF was custom-developed for use in high-performance consumer, commercial and industrial applications, and for integration with low-divergence diffraction-limited diode-pumped solid-state (DPSS) laser pulses, state-of-the-art InGaAs avalanche photodiode (APD) receivers, and custom CMOS readout circuits to achieve long ranging, even in harsh environmental conditions, with less laser power. The easy-to-operate, easy-to-program LRFs include an optional attitude and heading reference system (AHRS), allowing accurate geospatially referenced range data.

These products are not ITAR-controlled.

LRFs—Turnkey Modules

Key Product Features

  • Eyesafe: Class-1M, 1534-nm laser transmitters—including 100 μJ and 300 μJ options.
  • Long Range: From 3 km to 10 km, or longer
  • High Precision: Better than 150-mm single-shot accuracy; 50-mm multi-pulse accuracy
  • High Beam Quality: Diffraction-limited beam, M² < 1.15 and beam divergence better than 1 mrad
  • Unsurpassed Sensitivity: Noise-equivalent input (NEI) of fewer than 35 photons
  • High Repetition Rate: Up to 10-Hz single-shot
  • Long-life Battery: > 200 thousand shots with rechargeable LIPO
  • Long Lifetime: > 50 million shots
  • Robust: Qualified to IP64
Pulse EnergyPulse WidthPrecisionRangePart Number
100 µJ Eyesafe DPSS Laser4 ns150-mm single-pulse; 50-mm multi-pulse3 kmFUKF-KGAC
300 µJ Eyesafe DPSS Laser7 ns150-mm single-pulse; 50-mm multi-pulse5 kmFUMF-KGAC

LRF Modules for Original Equipment Manufacturers (OEMs)

Our cost-effective compact LRF modules for original equipment manufacturers allow 1534-nm InGaAs APD laser-ranging capabilities to be integrated quickly and efficiently into optical scopes, electro-optical systems, or weapon systems. These turnkey LRF modules are easily software-programmed and reconfigured. They are calibrated at the factory for optimal operation over a wide temperature range and are rugged to harsh operating conditions, including weapons mounting.

Key Product Features

  • Eyesafe: Class-1M, 1534-nm laser transmitters—ranging from 100 μJ to over 950-μJ pulse energies
  • Long Range: Options for single-shot capability of 25 km or greater
  • Simple: UART interface and flexible serial programming library
  • High Precision: Better than 150-mm accuracy single-shot variance, even at long range
  • High Beam Quality: Diffraction-limited beam, M² < 1.15
  • Excellent Repetition Rate: Up to 10-Hz single-shot repetition rate
  • Long Lifetime: > 50 million shots
  • Robust: Qualified to guns and other extreme environments
  • Lightweight: Models as light as 92 grams
Pulse EnergyApertureRange
[3x3m^2 Target
(Ext.)]*
Pulse Rep.
Freq. (single
shot, max)
FeaturesPart Number
Without Housing
Part Number
With Housing
* Single-shot; 30% reflective, 2.3 x 2.3-meter targets; extended targets are larger than beam width.
100 µJ

Eyesafe
DPSS
Laser
21 mm4 km
(4 km)
10 HzLRF OEM moduleDUKL-KCBCGUKL-KCBC
LRF OEM module
w/ aux. board
DUKS-KCBCGUKS-KCBC
LRF OEM module
w/ aux. board
& factory AHRS calibration
DUK7-KCBCGUK7-KCBC
300 µJ

Eyesafe
DPSS
Laser
21 mm7 km
(7 km)
10 HzLRF OEM moduleDUML-KCBCGUML-KCBC
LRF OEM module
w/ aux. board
DUMS-KCBCGUMS-KCBC
LRF OEM module
w/ aux. board
& factory AHRS calibration
DUM7-KCBCGUM7-KCBC
300 µJ

Eyesafe
DPSS
Laser
50 mm12 km
(15 km)
10 HzLRF OEM moduleDUML-KHBCGUML-KHBC
LRF OEM module
w/ aux. board
DUMS-KHBCGUMS-KHBC
LRF OEM module
w/ aux. board
& factory AHRS calibration
DUM7-KHBCGUM7-KHBC
950 µJ

Eyesafe
DPSS
Laser
21 mm11 km
(13 km)
5 HzLRF OEM moduleDUNL-KCBCGUNL-KCBC
LRF OEM module
w/ aux. board
DUNS-KCBCGUNS-KCBC
LRF OEM module
w/ aux. board
& factory AHRS calibration
DUN7-KCBCGUN7-KCBC
950 µJ

Eyesafe
DPSS
Laser
50 mm16 km
(25 km)
5 HzLRF OEM moduleDUNL-KHBCGUNL-KHBC
LRF OEM module
w/ aux. board
DUNS-KHBCGUNS-KHBC
LRF OEM module
w/ aux. board
& factory AHRS calibration
DUN7-KHBCGUN7-KHBC

LRF System-Integrator Kits

Our LRF System-Integrator Kits give system designers a turnkey laser-ranging solution for thermal, electro-optical, and optical scope integration. Each kit includes Voxtel’s ROX™ avalanche photodiode (APD) photoreceiver—which offers best-in-class sensitivity, enabling long-standoff range performance with less laser pulse energy. The ROX photoreceiver is paired with Voxtel’s small-form-factor 1534-nm diode-pumped solid-state (DPSS) erbium-glass laser transmitter, programmable time-to-digital converter (TDC), and programmable controller board. The result is a compact, lightweight highly-reliable ranging module with excellent performance.

Key Product Features

  • Turnkey: Integrated DPSS erbium-glass laser, high-performance InGaAs APD, and programmable pulse-processing electronics
  • Low Excess Noise: Impact-ionization-engineered InGaAs APD
  • Eyesafe: Class 1, 1534-nm laser
  • High Precision: 150-mm single-pulse; 50-mm multi-pulse
  • Near Diffraction-limited Beam Quality: M² < 1.15 x diffraction limit
  • Excellent Noise-equivalent Input (NEI): as low as 35 photons
  • Low Power: < 1 mW with LRF disabled
  • Long Lifetime: > 50 million shots
Laser
Pulse
Energy
InGaAs
APD
Photoreceiver
Pulse
Width
Additional
Laser
Options
Optics
Options
Part NumberPart Number
with T0 Detector
Integrated with Laser
No Laser75 µm---EUXK-J0XC-
200 µm ---EUXK-N0XC-
250 µm CA---EUXK-K0XC-
500 µm---EUXK-P0XC-
100-µJ

Eyesafe
DPSS
Laser
200 µm4 ns--EUKK-N00CEUPK-N00C
with 17x laser collimator-EUKK-N0BCEUPK-N0BC
21 mmEUKK-NCBCEUPK-NCBC
50 mmEUKK-NHBCEUPK-NHBC
300-µJ

Eyesafe
DPSS
Laser
75 µm7 ns--EUMK-J00CEUQK-J00C
200 µm7 ns--EUMK-N00CEUQK-N00C
with 17x laser collimator-EUMK-N0BCEUQK-N0BC
21 mmEUMK-NCBCEUQK-NCBC
50 mmEUMK-NHBCEUQK-NHBC
250 µm CA7 nswith 17x laser collimator-EUMK-K0BCEUQK-K0BC
950-µJ

Eyesafe
DPSS
Laser
200 µm8 ns--EUNK-N00CEURK-N00C
with 17x laser collimator-EUNK-N0BCEURK-N0BC
21 mmEUNK-NCBCEURK-NCBC
50 mmEUNK-NHBCEURK-NHBC