Optical apparatus

Abstract

The invention provides an optical apparatus enabling diopter adjustment, etc. to be achieved using, for instance, a reflection type variable-optical property optical element or a variable-optical property mirror but without recourse to any mechanical moving part. The variable-optical property mirror 9 comprises an aluminum-coated thin film 9 a and a plurality of electrodes 9 b . Via variable resistors 11 and a power source switch 13 a power source 12 is connected between the thin film 9 a and the electrodes 9 b , so that the resistance values of the variable resistors 11 can be controlled by an operating unit 14 . The shape of the thin film 9 a as a reflecting surface is controlled by changing the resistance value of each variable resistor 11 in response to a signal from the operating unit 14 in such a manner that the imaging capability of the variable mirror is optimized.

1 . A variable-optical property mirror, comprising a plurality of electrodes, wherein the plurality of electrodes are not located on the same planar surface.  
   
   
       2 . A variable-optical property mirror, comprising a plurality of electrodes, wherein the plurality of electrodes are formed on a curved surface.  
   
   
       3 - 20 . (canceled)