| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a large-sized, multi-functional, and thin-type lens that has a simple structure and can be stably driven by a low voltage. <P>SOLUTION: The liquid crystal lens includes: a first substrate having a first electrode; a second electrode having a hole; and a liquid crystal layer. The liquid crystal lens is configured so that a first voltage is applied between the first and second electrodes. The liquid crystal lens has a third electrode arranged, and is configured so that a second voltage is applied to the third electrode. In the liquid crystal lens, either one of the first voltage and the second voltage is made to be a fixed value, and optical characteristics can be variably controlled by varying the second voltage with respect to the first voltage or varying the first voltage with respect to the second voltage. A transparent insulating layer or a transparent medium and a transparent high resistance layer are arranged between the second electrode and the liquid crystal layer. The resistance value of the transparent high resistance layer is axial-symmetry from the center of the third electrode, and also, changes stepwise or continuously in the radial direction. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
