LDR40K2 Laser Rangefinder Target Designator

TECHNICAL SPECIFICATIONS

1) Operating Modes: Ranging, Target Designation

2) Pump Source: Diode Array;

3) Operating Wavelength: 1.064μm;

4) Pulse Energy: ≥45mJ;

5) Pulse Energy Fluctuation: Within a target designation cycle, the fluctuation of single pulse energy does not exceed 10% of the average energy (statistic taken after 2 seconds of emission);

6) Beam Divergence: ≤0.5mrad;

7) Pulse Width: 15±5ns;

8) Laser Axis Stability: ≤0.05mrad;

9) Optical Axis Alignment Error Relative to Mounting Datum: Azimuth ≤0.5mrad, Elevation ≤0.25mrad;

10) Ranging Performance:

a) Ranging Frequency: 1Hz/5Hz, single shot;

b) Continuous ranging time at 1Hz is not less than 5 minutes, with a 1-minute rest;

c) Continuous ranging time at 5Hz is not less than 1 minute, with a 1-minute rest;

d) Minimum measurement distance: no more than 300m;

e) Maximum measurement distance: no less than 5000m;

f) Ranging Accuracy: ±2m;

g) Probability of Ranging: no less than 98%;

11) Target Designation Performance:

a) Laser Encoding Precision: 2.5μs.

b) Base Frequency for Laser Target Designation: 20Hz.

c) Continuous Target Designation Time

• Short Cycle Target Designation:

A single target designation lasts no less than 20 seconds, with an interval no greater than 30 seconds, and continues for 10 cycles.

• Long Cycle Target Designation:

A single target designation lasts no less than 47 seconds, with a target designation restart interval no greater than 30 seconds, capable of continuous designation for 2 cycles.

After the completion of a target designation cycle, a 30-minute interval is required before restarting continuous target designation.

12) Laser Encoding:

a) Complies with MIL-STD-810G requirements and has user self-encoding expansion capabilities;

b) Capable of receiving external synchronization signals to control laser emission for encoding;

c) Encoding Method: Precise frequency code (eight pre-stored cycle code encodings);

13) Dimensions and Weight:

a) Outer dimensions envelope: ≤106mm×98mm×48mm;

b) Weight: ≤450g.

14) Power Supply:

a) The electrical and electronic components of the laser rangefinder and target designator should be compatible with the system power characteristics.

b) Average power is no greater than 80W, and peak power is no greater than 100W.

c) Input power is +26V±4VDC (voltage fluctuation range +22V to +30V). Reverse polarity protection is required for the input power.

15) Electrical Protection:

After the circuit board is designed and debugged, it should be coated with conformal coating for "three protections" treatment.

Environmental Adaptability Requirements

Temperature Requirements

1) High Temperature Requirements

Working temperature: +55℃, maintained for 2 hours;

Storage temperature range ≤+70℃.

2) Low Temperature Requirements

Working temperature: -40℃, maintained for 2 hours;

Storage temperature range ≥-45℃.

Vibration Requirements

Capable of withstanding flight vibrations and the impact of takeoff and landing, and all equipment can withstand the environmental conditions of automotive transportation.

Vibration is a swept spectrum, with 15Hz to 33Hz being equal displacement sine vibration, with a displacement of 0.91mm; 33Hz to 700Hz is equal acceleration sine vibration, with an acceleration of 2g.

Each direction vibrates for 1 hour.

Test Sample Condition: The product is placed on the test bench in normal use condition and powered on.

After the shock test, the product should work normally. 

Shock Requirements

• Vertical axis direction ≥ 10g,
• Transverse axis direction ≥ 10g,
• Longitudinal axis direction ≥ 10g;
• Ring sawtooth wave, duration 11ms, X, Y, Z axes, each axis in two directions, one time each, totaling 18 times.
• Test Sample Condition: The product is placed on the test bench in normal use condition and powered on.
• After the shock test, the product should work normally.

STRUCTURAL DRAWING (mm)

Figure 1 Mechanical Interface

ELECTRICAL INTERFACE