Patent ID: 6359674
Filing Date: 2002-03-19
Classification: G02F

Abstract:
A liquid crystal lens fitted in a cylindrical optical system lens frame, comprising:an optically transparent first optical member; an optically transparent second optical member located on one side of the first optical member; a first sealant for cementing the first and second optical members in a spaced manner; an optically transparent third optical member located on the other side of the first optical member; a second sealant for cementing the first and third optical members in a spaced manner; a first liquid crystal stored in a space surrounded by the first and second optical members and the first sealant; and a second liquid crystal stored in a space surrounded by the first and third optical members and the second sealant, the first optical member including a first flat portion formed at least on a part of the outer periphery thereof and having a diameter such that the first optical member can be fitted in the cylindrical optical system lens frame, a first transparent electrode formed on a first surface opposite to the second optical member, a second transparent electrode formed on a second surface opposite to the third optical member, and a first electrode extending across the first flat portion and connected electrically to the first and second transparent electrodes, the second optical member including a second flat portion formed at least on a part of the outer periphery thereof and having a diameter a little smaller than that of the first optical member, a third transparent electrode formed on a third surface opposite to the first optical member, and a second electrode extending across the second flat portion and connected electrically to the third transparent electrode, and the third optical member including a third flat portion formed at least on a part of the outer periphery thereof and having a diameter a little smaller than that of the first optical member, a fourth transparent electrode formed on a fourth surface opposite to the first optical member, and a third electrode extending across the third flat portion and connected electrically to the fourth transparent electrode.