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The birds will be frightened and not to come back. Our lasers are using in many countries for farmers protecting their lands and scientists working in forests. Spartan 637nm 90mW Red Laser Pointer Control birds from 100m to 1km. This laser has a very bright red beam and very low divergence. The beam is still concentrated and bright enough to scare birds from long distance. Spartan 532nm 100mW to 300mW Green Laser Pointer control birds from 100m to 1km.
resolution will be in the range of micrometers, but the maximum range is limited to only a few meters. Up to distances of 100m people often use the phase shift measurement. The laser light is modulated and the phaseshift between outgoing and incoming light gives the distance. To reach a resolution in the millimeter range very high sampling rates are necessary. Only low measuring rates with high current consumtion are possible the consequence. With Time-to-Digital-Converters (TDCâs) you choose the straight way. It is possible to measure directly the time-of-flight of light.