Apparatus and method fo deterring birds by laser

Abstract

The invention concerns an apparatus and a method for deterring birds, comprising a frame fixedly disposed on a structure; a laser light generator connected with the frame, including a laser light source for generating a laser light beam; a supply circuit for supplying the laser light source; driving means connected with the laser light generator, for having at least a part of the laser light generator move; and a control element for controlling the laser light source and the drivable part of the laser light generator, wherein the driving means are arranged for causing a movement to be executed of at least a drivable part of the laser light generator. Thus, an apparatus and a method are obtained having a greater effect in deterring birds.

1 . A method for deterring birds from a fixed structure, the method comprising:
 generating in a fixedly disposed apparatus a bird deterring light beam, wherein the light beam performs a repetitive movement wherein the light beam is aimed at the fixed structure so as to clear the fixed structure by sweeping the laser beam with such a high frequency along side the fixed structure that the moving beam keeps the birds away from the fixed structure, wherein input means are arranged for inputting properties of the path to be described by the beam.   
     
     
         2 . The method according to  claim 1 , wherein the light beam is caused to move in a vertical plane with fast movements in a horizontal plane with slower movements. 
     
     
         3 . The method according to  claim 1 , wherein the laser beam is swept with a high frequency along side the fixed structure, so that an apparent surface is obtained that swerves. 
     
     
         4 . The method according to  claim 1 , wherein the beam has a wavelength of between 300 nm and 400 nm. 
     
     
         5 . The method according to  claim 1 , wherein the angle of elevation of the exiting light beam is limited. 
     
     
         6 . The method according to  claim 1 , wherein the beam is caused to move jerkily. 
     
     
         7 . The method according to  claim 1 , wherein the beam is caused to describe a figure which forms the envelope of a structure. 
     
     
         8 . The method according to  claim 1 , wherein a control element is arranged for repetitively causing a program to be executed by the beam. 
     
     
         9 . The method according to  claim 8 , wherein the control element is arranged for each time executing the same program. 
     
     
         10 . The method according to  claim 8 , wherein the control element is arranged for each time executing a different program. 
     
     
         11 . The method according to  claim 8 , wherein the control element is arranged for executing a program at predetermined points of time. 
     
     
         12 . The method according to  claim 8 , wherein the control element is arranged for executing a program after detection of a number of birds by a bird detection element. 
     
     
         13 . The method according to  claim 12 , wherein the detection element is connected with the control element and wherein the control element is arranged for executing a program when the detection element detects the approach of a subject.