LDR40K1 Laser Rangefinder &Laser Irradiation

                                                                                     Control Function

The laser target indicator can achieve the following control functions through the serial interface.

It can respond to laser target indication commands and perform laser target indication in the specified internal and external synchronization coding modes.

If no stop command is received after starting the laser target indication, the target indication will automatically stop after one cycle.

It has a laser coding setting function.

It can perform laser ranging.

If no command is received during ranging, and no stop command is received after starting continuous ranging, the ranging will automatically stop after 5 minutes (at 1 Hz), 1 minute (at 5 Hz), or 20 seconds (at 20 Hz). The above settings can also be modified through communication according to user requirements.

It has a multi – target prompting function.

It has a power supply polarity reverse connection protection function.

It can count the number of laser pulse emissions.

                                                                                  Parameter Indicators

Pump Source

Laser LD (Laser Diode) Pumping

Cooling Method

Passive cooling, no temperature control

Working Mode

Ranging, target indication

Operating Wavelength

1.064nm±3nm

Pulse Energy

≥40 mJ

Laser Energy Stability

Within a single irradiation cycle, the pulse energy fluctuation does not exceed 10% of the average energy.

Pulse Width

≥15ns±5ns

Beam Divergence Angle

≤0.4 mrad

Stability of The Laser Optical Axis

≤0.05mrad

                                                                                     Ranging performance

Ranging Frequency

1Hz~20Hz

Continuous Laser Ranging Time

5min(1Hz)/1min (5Hz)/20S（20hz）

Continuous Ranging Time

≤100m

Maximum Ranging Distance

≥10 km(Visibility: 23.5 km, target reflectivity: 0.2, target size:

2.3 m × 2.3 m)

Ranging accuracy

±1m.

Successful Ranging Rate

≥98%

                                                                                      Irradiation performance

Precision of Laser Coding

±1μs

Fundamental Frequency Of The Laser Target Designation Frequency

1~20Hz

Laser Irradiation Distance

≥4000m

Laser Target Designation Cycle

Short-period Irradiation:
The duration of a single irradiation shall be no less than 18 seconds, with an interval of no more than 10 seconds between each irradiation, and it can perform continuous irradiation for 8 cycles.

Long-period irradiation:
The duration of a single irradiation shall be no less than 47 seconds. When restarting the irradiation, the interval shall be no more than 30 seconds, and it can perform continuous irradiation for 2 cycles.

                                                                                             Laser Coding

It complies with the requirements of MIL-STD-810G standard and has the expandable capability of user self-coding.

It has the ability to receive external synchronous signals and encodes by controlling the laser beam emitting mode through external signals.

Coding method: Precise frequency code (encoded with eight groups of pre-stored periodic codes).

                                                                                      Dimensions and Weight

External Dimension Envelope

≤115mm×65mm×60mm

Weight

≤460g

                                                                                  Input Power Supply Requirements

During operation, the average power consumption is not more than 55W, and the peak power consumption is not more than 100W.

The operating voltage range is from 20V ~ 28V.

                                                                           Three-proofing for Electrical Components

After the circuit board is designed and debugged, it is coated with three-proofing paint for “three-proofing” treatment.

                                                                           Environmental adaptability requirements

High Temperature

Operating temperature

≤ +55°C

Storage temperature range

≥ -40°C

Low Temperature

Operating temperature

≥ -40°C

Storage temperature range

≥ -45°C

Vibration Requirements

It can withstand the flight vibration as well as the impacts during takeoff and landing, and all equipment can withstand the environmental conditions of automobile transportation.

The vibration is in the form of a swept frequency spectrum. From 15Hz to 33Hz, it is a sinusoidal vibration with equal displacement, and the displacement magnitude is 0.91mm; from 33Hz to 700Hz, it is a sinusoidal vibration with equal acceleration, and the acceleration is 2g.

Vibrate in each of the three directions for 1 hour.

Specimen Status: The product is placed on the test bench in the normal operating state for the impact test, and the product is powered on.

After the impact test, the product should operate normally.

Shock Requirements

Vertical axial direction: ≥ 10g,

Horizontal axis direction: ≥ 10g,

Longitudinal axis direction: ≥ 10g;

Post-peak sawtooth wave with a duration of 11ms. For the X, Y, and Z axes, in two directions of each axis, once for each direction, a total of 18 times.

Specimen Status: The product is placed on the test bench in the normal use state for the shock test, and the product is powered on.