Semi-finished blank for varifocal lens, varifocal lens, and varifocal eyeglasses

Abstract

It is an object to provide a semi-finished blank for a varifocal lens, as well as a varifocal lens and varifocal eyeglasses, with which power consumption can be reduced and a decrease in commercial value can be prevented. The invention comprises a first substrate 19, a first transparent conductive film 21 that is produced on the front face of this first substrate 19, a second substrate 41 that is opposite the first substrate 19, a second transparent conductive film 43 that is produced on the back face of this second substrate 41, and a varifocal portion 5 that is disposed between the front face of the first substrate 19 and the back face of the second substrate 41. The first transparent conductive film 21 is separated by laser into a first region 31 that includes a region that is opposite the varifocal portion 5, and a region 33 other than this first region 31.

1 . A semi-finished blank for a varifocal lens, comprising:
 a first substrate;   a first transparent conductive film produced on the front face of the first substrate;   a second substrate that is opposite the first substrate;   a second transparent conductive film produced on the back face of the second substrate;   a varifocal portion disposed between the front face of the first substrate and the back face of the second substrate;   a first region that is opposite the varifocal portion in the first transparent conductive film; and   a second region that is separated from the first region as a region other than the first region in the first transparent conductive film.   
     
     
         2 . A semi-finished blank for a varifocal lens, comprising:
 a first substrate;   a first transparent conductive film produced on the front face of the first substrate;   a second substrate that is opposite the first substrate;   a second transparent conductive film produced on the back face of the second substrate;   a varifocal portion disposed between the front face of the first substrate and the back face of the second substrate;   a third region that is opposite the varifocal portion in the second transparent conductive film; and   a fourth region that is separated from the third region as a region other than the third region in the second transparent conductive film.   
     
     
         3 . The semi-finished blank for a varifocal lens according to  claim 1 , further comprising:
 a first internal electrode connected to the first transparent conductive film; and   a second internal electrode connected to the second transparent conductive film,   wherein the first region includes the region of the first transparent conductive film that is opposite the first internal electrode.   
     
     
         4 . The semi-finished blank for a varifocal lens according to  claim 2 , further comprising:
 a first internal electrode connected to the first transparent conductive film; and   a second internal electrode connected to the second transparent conductive film,   wherein the third region includes the region of the second transparent conductive film that is opposite the second internal electrode.   
     
     
         5 . A semi-finished blank for a varifocal lens, comprising:
 a first substrate having a liquid crystal support portion on its surface;   a first transparent conductive film produced on the front face of the first substrate;   a second substrate that is opposite the first substrate;   a second transparent conductive film produced on the back face of the second substrate;   a varifocal portion disposed between the front face of the liquid crystal support portion and the back face of the second substrate;   a first region that is opposite the varifocal portion in the first transparent conductive film;   a second region that is separated from the first region as a region other than the first region in the first transparent conductive film;   a third region that is opposite the varifocal portion in the second transparent conductive film;   a fourth region that is separated from the third region as a region other than the third region in the second transparent conductive film;   a first applying region that is formed in the first region covering the varifocal portion; and   a second applying region that is formed in the second region covering the varifocal portion, and that includes the region of the second transparent conductive film that is opposite the first applying region.   
     
     
         6 . The semi-finished blank for a varifocal lens according to  claim 5 , further comprising:
 a first internal electrode connected to the first transparent conductive film; and   a second internal electrode connected to the second transparent conductive film,   wherein the first region includes the region of the first transparent conductive film that is opposite the first internal electrode, and the third region includes the region of the second transparent conductive film that is opposite the second internal electrode, and   a connecting region of the third region that connects the second applying region and the region of the second transparent conductive film that is opposite the second internal electrode is provided at a position that is offset from a position that is opposite a connecting region of the first region that connects the first applying region and the region of the first transparent conductive film that is opposite the first internal electrode.   
     
     
         7 . A varifocal lens, comprising:
 a first substrate;   a first transparent conductive film produced on the front face of the first substrate;   a second substrate that is opposite the first substrate;   a second transparent conductive film produced on the back face of the second substrate;   a varifocal portion disposed between the front face of the first substrate and the back face of the second substrate;   a first internal electrode connected to the first transparent conductive film;   a second internal electrode connected to the second transparent conductive film;   a first terminal and a second terminal that are connected to the first internal electrode and the second internal electrode, respectively, and are provided on the side face of the lens;   a first region that is opposite the varifocal portion in the first transparent conductive film; and   a second region that is separated from the first region as a region other than the first region in the first transparent conductive film.   
     
     
         8 . Varifocal eyeglasses, comprising:
 a first substrate;   a first transparent conductive film produced on the front face of the first substrate;   a second substrate that is opposite the first substrate;   a second transparent conductive film produced on the back face of the second substrate;   a varifocal portion disposed between the front face of the first substrate and the back face of the second substrate;   a first internal electrode connected to the first transparent conductive film;   a second internal electrode connected to the second transparent conductive film;   a first terminal and a second terminal that are connected to the first internal electrode and the second internal electrode, respectively, and are provided on the side face of the lens;   a circuit section that applies voltage to the varifocal portion through the first terminal and the second terminal, and controls the applied voltage;   a first region that is opposite the varifocal portion in the first transparent conductive film;   a second region that is separated from the first region as a region other than the first region in the first transparent conductive film;   a third region that is opposite the varifocal portion in the second transparent conductive film; and   a fourth region that is separated from the third region as a region other than the third region in the second transparent conductive film.