Small-size laser rangefinders EV15/EV25/EV25D


Application

Small size laser range-finders based on pulse semiconductor laser is used for ranging to reflector (EV15, EV25) and to natural objects (EV25D).
 

Principle of operation

This range-finder has next functions: registered pulse detection and strobbing, amplitude stabilization and automatic repetitive radiation pulse detection.

The main advantage of our range-finders is small time of one measurement. Therefore they can be used in hydrography and cadastral survey. They don’t need calibration unlike phase and pulse-phase range-finders. Warm-up time after power-up is less then 5 seconds in normal mode and 30-120 seconds in high precision measurement mode. This time depends on environment temperature. All range-finders are laser-safe for eye impact.

Power supply is direct current sources with rated voltage 12V. Power consumption is less then 15VA.

This range-finder device can be use as range-finder attachment on ordinary theodolite because of construction. Measured distance is displayed on numeric display and can be outputted on external storage devise. There is built-in 20X telescope for directing on reflector.


 

Characteristics

Device model
EV15
EV25
EV25D
Range, m
10 000
10 000
500
Range measurement accuracy, m
3·10-2
3·10-2/
3,5·10-3
3·10-2/
1·10-2
Minimum measured range, m
10
10
10
Single measurement time, s
0,1
0,1/10
5/45
 Weight, kg 
1,5
1,5
1,8
Overall dimensions, mm3
  330х180х75
Operating temperature range, °С
–20…+35
Power supply voltage, V
9 ... 13 


 

References

  • E.V. Buryi, A.E. Kosykh, "Spatial and temporal characteristics of the radiation emitted by an array of injection lasers generating nanosecond pulses", QUANTUM ELECTRON, 1995, 25 (8).