Abstract: A control device (4) controls a varifocal lens (2) having a first substrate (20), a second substrate (22) facing the first substrate (20), and a varifocal component (14) disposed between the first substrate (20) and the second substrate (22). When an off signal is inputted to the varifocal component (14), the control device (4) stops applying voltage to the varifocal component (14), then applies voltage for a specific length of time, and finally stops the voltage. This reduces the duration of hazing that occurs during the switching of voltage application to the varifocal component (14).

Abstract: A semi-finished blank for a varifocal lens, as well as a varifocal lens and varifocal eyeglasses, have power consumption reduced and avoid a decrease in commercial value. A first substrate has a first transparent conductive film that is produced on the front face of this first substrate. A second substrate that is opposite the first substrate has a second transparent conductive film that is produced on the back face of this second substrate. A varifocal portion is disposed between the front face of the first substrate and the back face of the second substrate. The first transparent conductive film is separated by laser into a first region that includes a region that is opposite the varifocal portion, and a region other than this first region.

Abstract: A control device (4) controls a varifocal lens (2) having a first substrate (20), a second substrate (22) facing the first substrate (20), and a varifocal component (14) disposed between the first substrate (20) and the second substrate (22). When an off signal is inputted to the varifocal component (14), the control device (4) stops applying voltage to the varifocal component (14), then applies voltage for a specific length of time, and finally stops the voltage. This reduces the duration of hazing that occurs during the switching of voltage application to the varifocal component (14).

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, a first transparent conductive film that is produced on the front face of this first substrate, a second substrate that is opposite the first substrate, a second transparent conductive film that is produced on the back face of this second substrate, and a varifocal portion that is disposed between the front face of the first substrate and the back face of the second substrate. The first transparent conductive film is separated by laser into a first region that includes a region that is opposite the varifocal portion, and a region other than this first region.

Abstract: This semi-finished blank for a varifocal lens comprises a first substrate (13), a second substrate (15) that is opposite the first substrate (13), a first transparent conductive film (27) produced on the front of the first substrate (13), a second transparent conductive film (33) produced on the back of the second substrate (15), a varifocal section (5) disposed between the front of the first substrate (13) and the back of the second substrate (15); a first internal electrode (17) of the first transparent conductive film (27), a second internal electrode (19) of the second transparent conductive film (33), a first laser separation film (29) that is opposite the second internal electrode (19) and in which a partial region of the first transparent conductive film (27) is separated with a laser, and a second laser separation film (35) that is opposite the first internal electrode (19) and in which a partial region of the second transparent conductive film (33) is separated with a laser.

Abstract: This semi-finished blank for a varifocal lens comprises a first substrate (13), a second substrate (15) that is opposite the first substrate (13), a first transparent conductive film (27) produced on the front of the first substrate (13), a second transparent conductive film (33) produced on the back of the second substrate (15), a varifocal section (5) disposed between the front of the first substrate (13) and the back of the second substrate (15); a first internal electrode (17) of the first transparent conductive film (27), a second internal electrode (19) of the second transparent conductive film (33), a first laser separation film (29) that is opposite the second internal electrode (19) and in which a partial region of the first transparent conductive film (27) is separated with a laser, and a second laser separation film (35) that is opposite the first internal electrode (19) and in which a partial region of the second transparent conductive film (33) is separated with a laser.

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.