Variable mirror, optical apparatus and decentered optical system which include variable mirror, variable-optical characteristic optical element or combination thereof

Abstract

An object of the present invention is to provide a variable mirror that is readily formable and can be readily and precisely changed into various configurations as desired. A variable mirror 20 according to this invention is a variable mirror having a mirror body 26 formed of an elastic or flexible material and having one surface 26 b functioning as a reflecting surface. The mirror body 26 is capable of changing the reflecting surface configuration. The variable mirror is characterized in that the rigidity of the mirror body 26 varies in a direction parallel to the one surface.

1 - 45 . (canceled)  
   
   
       46 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, wherein there is a change in a position relation between said variable-optical-characteristics optical element and said optical element.  
   
   
       47 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, wherein there is a change in a position relation between an image-formation plane and said optical element.  
   
   
       48 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, wherein there is a change in a position relation between said variable-optical-characteristic optical element and an image-formation plane.  
   
   
       49 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, wherein there is a change in position relations between said variable-optical-characteristic optical element and an image-formation plane and between said optical element and an image-formation plane.  
   
   
       50 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, wherein there is a change in a position relation between a first surface of said optical system and an image-formation plane.  
   
   
       51 . An optical system, comprising a variable-optical-characteristic optical element, an optical element and a solid state image pickup device, wherein said solid-stage image pickup device displaces.  
   
   
       52 . An optical system, comprising a variable-optical-characteristic optical element, an optical element and a solid state image pickup device, wherein said solid-state image pickup device and said variable-optical-characteristic optical element displace.  
   
   
       53 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, wherein said variable-optical-characteristic optical element makes correction for aberrations associated with zooming during zooming.  
   
   
       54 . An optical system, comprising a variable-optical-characteristic optical element and an optical element, which includes a stop in front of or in the rear of said variable-optical-characteristic optical element.  
   
   
       55 . The optical system according to any one of claims  46 - 54 , wherein said optical element has a rotationally symmetric optical surface.  
   
   
       56 . The optical system according to any one of claims  46 - 54 , wherein said optical element has a rotationally asymmetric optical surface.  
   
   
       57 . The optical system according to any one of claims  46 - 54 , wherein said variable-optical-characteristic optical element is an active reflecting optical element.