40km Eye Safe Laser Rangefinder Module of 1Hz~12.5Hz continuous

40km 1Hz ~ 12.5Hz 10mins 1570nm Eye Safe Laser Rangefinder

China TianYing TY-LR94-3 mini 1570nm 40km eye safe laser rangefinder module developed for class 1 eye safe and modern optronic reconnaissance tracking platforms tasked to acquire small, fast moving targets, hence the 12.5 Hz continuous 10 minutes measuring rate and the extended range.

The LRF-40km can find the range to mid-sized targets such as 15m x 8m ship to distances up to and even beyond 40km. Installed in platforms on ships, land vehicles or aeroplanes. Easy integrated to camera system, fire-control system etc, it is ideal for 750mm to 1650mm focus cooled thermal camera system.

We leveraged the latest technology to construct this remarkably compact, exceptionally accurate rangefinder, hence customer enable very easy integration into different platforms.

40km 1Hz~12.5Hz continuous 1570nm Eye Safe Laser Rangefinder Features:
1) Up to 40 km ranging capability, typical 5m² plane ≥ 15km of 12.5Hz(tank ≥ 12km).

2) Pulse repetition frequency up to 12.5 Hz continuous 10minutes.

3) Range accuracy < +/-5 m for target ranges.

4) Diode-Pumped ND:YAG OPO.

5) ≤ 900 μrad beam divergence

6) ANSI Z136.1-2007/ICE 60825-1:2007 Class 1 eye safe.

7) Miniaturized design, weight  ≤ 5.5 kg with house.

40km 1Hz~12.5Hz continuous 10minutes 1570nm Laser Rangefinder Module Recommended Use:
1) Optronic surveillance and reconnaissance.

2) Target tracking systems and anti-aircraft systems.

3) Fire control systems for land, air and sea targets.

4) For determination of flight altitudes on airports.

5) To measure the distance of ships from the coast.

6) In general for applications of position determination of moving objects.

40km 1Hz~12.5Hz continuous rate 1570nm Laser Rangefinder Module mainly specification:

Model TY-LR94
Transmitter
Laser Type Diode-pumped Nd:YAG OPO
Wavelength 1570nm, option 1064nm
Measuring rate(programmable) Typical 12.5Hz work 2.5minues and rest 2.5minutes cycle. .
  Max 12.5Hz continuous 10minutes
Beam divergence ≤ 0.9 mrad,option 2mrad, 0.8mrad, 0.7mrad, 0.6mrad, 0.5mrad, 0.3mrad etc.
Laser classification Class 1 (EN 60825-1:2007 and ANSI 136.1-2007)
Cooling Fan air flow.
Receiver
Detector TE-cooled Avalanche Photo Diode Detector (TE-cooled APD).
Range data
Max Ranging capability ≥ 25km(up to 30km) of building/large craft in standard 23.5km visibility;
  ≥ 15km of 30% albedo 5m² aircraft in 23.5 km visibility(tank ≥ 12km).
Accuracy ≤  +/-5m
Electrical interface
Data interface RS422
Power 20 - 28V DC
Environmental conditions
Operation Temperature -40ºC~+60ºC
Reliability
Life ≥ One Million Range Measurements
MTBF > 10000 hours
Mechanical interface
Size ≤ 6900 cubic centimeters
Weight ≤ 5500g with house
* - Note *Product design and Technical information is subject to change without notice
** Depending on the region of sale.

Question:
1, Why many 20km/30km/40km laser rangefinder can not measure tank 10km in standard 23.5km visibility?

Because their 20km/30km/40km is theory data or high reflection large target in ideal visibility condition, even reflection need beyond 80% and visibility need beyond 50km.

2, Why many NATO target 10% reflection 12km laser rangefinder can not measure tank 10km in standard 23.5km visibility?

Because their 10% reflection is not real performance data, 2.3m x 2.3m NATO target is not real tank, or their NATO target effective size is different; normal 2.3m x 2.3m target real albedo is 50% or more.

About test land standard, normal big target typical 20km LRF with 25km visibility, then, normal this LRF can measure 2.3m x 2.3 target about 15km or more, then, 30% albedo 2.3m x 2.3m target is about 10km ~ 12km.

Also, starting state and stable state measuring range is different too, such as 15mJ-25mJ LRF, starting state is 25mJ, typical stable state is only 15mJ, only many companies are only said starting state, for example, said single pulse laser energy is at least 25mJ.

3, Why many laser rangefinder do not show measurement rate details?

Because max rate and continuous rate technology demand is different, such as max 12.5Hz 10 sec to 60 sec, maybe then 5Hz is max 1 min to 3 min with cycle.

Also, when rate have more different, such as 1Hz-5Hz, 1Hz-10Hz, 1Hz-20Hz, 5Hz-25Hz etc, then their working distance have more different too.

About 1.5µm eye safe laser rangefinder, if 1Hz is 10km, then, normal 5Hz is only balance about 80%~ 85%, normal 10Hz is only balance about  70%~80%, when this LRF laser energy is very low, then attenuation speed will accelerate.

4, Why normal mid-long range high rate laser rangefinder do not use for Erbium-glass laser?

Because normal Erbium-glass laser energy is too low, high rate continuous measuring time is too short, especially at extreme operating temperatures.

In fact, if Erbium-glass laser want to meet demand, energy need at least 2mJ, normal need 5mJ to 8mJ.

Then, Erbium-glass is not competitive with OPO and Raman shifted.

5, Why many laser rangefinder price is very cheap?

Because performance is different, for example: one LRF is used for bad cable, messy interface, messy wiring etc, then the LRF cost can reduce, even reduce much, but no warranty on performance.

If used for same performance, then our price is very cheap. that is why many laser rangefinder do not show their real main performance data.

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