| 摘要 |
A repellent laser beam device (10) for preventing pests, such as birds, from feeding on fruits in a field. The device is mounted on a tripod (12) and housed in a weather-protected box. It is mounted so as to be adjustable in height and angle. A control unit causes a laser beam to sweep a field in vertical and horizontal patterns, frightening birds and other pests away. The laser beam is of a wavelength seen by birds or other animals and merely frightens them away rather than blinding them. The patterns and speed of the scanning device are variable. The device is powered by a rechargeable battery and includes a solar panel system for recharging the batteries. The system is operable by photocell controlled switches, eliminating the need for human, manual on-off switching. |
