Image blurring correction apparatus

Abstract

When the camera is performing the pan or tilt operation on performing image blurring correction, the image blurring correction is stopped and a vibration-proof lens is returned to a reference position at a speed that is changed according to a focal length of the zoom lens and is reduced if the zoom lens is set on a wide-side in particular so as to prevent a sense of discomfort due to swingback on the pan or tilt operation. The vibration-proof lens may be kept at a fixed position for a fixed time and returned to the reference position after the fixed time elapses so as to alleviate disorder of an image. The control subject for correcting the image blurring may be returned to the reference position by a predetermined function of which variable is time so as to exert control after stopping the image blurring correction on the pan or tilt operation suitably as intended.

1 . (canceled)  
   
   
       2 . (canceled)  
   
   
       3 . (canceled)  
   
   
       4 . (canceled)  
   
   
       5 . An image blurring correction apparatus, comprising: 
 an image blurring detection device which detects an image blurring of an image formed by an image taking optical system of a camera;    an image blurring correction device which displaces a shooting range of the image taking optical system according to the image blurring detected by the image blurring detection device so as to correct the image blurring; and    an image blurring correction stopping device which, if determined that the camera is performing at least one of pan operation and tilt operation, stops image blurring correction by the image blurring correction device, then keeps the shooting range of the image taking optical system at a fixed position until a predetermined time elapses, and then starts to return the shooting range of the image taking optical system displaced by the image blurring correction device to a reference position after the predetermined time elapses.    
   
   
       6 . The image blurring correction apparatus as defined in  claim 5 , wherein the image blurring correction device displaces the shooting range by displacing a correcting lens placed in the image taking optical system within a surface perpendicular to an optical axis of the image taking optical system.  
   
   
       7 . An image blurring correction apparatus, comprising: 
 an image blurring detection device which outputs a blurring signal according to an image blurring of an image formed by an image taking optical system of a camera;    a filter processing device which filters the blurring signal outputted by the image blurring detection device and calculates a correcting position to correct the image blurring;    an image blurring correction device which displaces a predetermined control subject for displacing an effective shooting range of the image taking optical system to the correcting position calculated by the filter processing device so as to correct the image blurring;    a pan/tilt operation determination device which determines whether or not at least one of pan operation and tilt operation of the camera is performed; and    a pan/tilt operation time control device which calculates the correcting position of the control subject of the image blurring correction device with a predetermined function of which variable is time if the pan/tilt operation determination device determines that the at least one of the pan operation and the tilt operation of the camera is performed, and displaces the control subject to the calculated correcting position so as to return the control subject to a predetermined reference position in a predetermined elapsed time from a moment at which it is determined that the at least one of the pan operation and the tilt operation of the camera is performed.    
   
   
       8 . The image blurring correction apparatus as defined in  claim 7 , wherein the control subject comprises a correcting lens which is placed in the image taking optical system and is displaced within a surface perpendicular to an optical axis of the image taking optical system so as to displace the shooting range.  
   
   
       9 . The image blurring correction apparatus as defined in  claim 7 , wherein the predetermined function is one of a sine function and a quadratic function.  
   
   
       10 . The image blurring correction apparatus as defined in  claim 9 , wherein the control subject comprises a correcting lens which is placed in the image taking optical system and is displaced within a surface perpendicular to an optical axis of the image taking optical system so as to displace the shooting range.