| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical zoom structure that includes a liquid crystal lens, and can change a zoom magnification of the optical zoom structure by adjusting voltage.SOLUTION: An optical zoom structure 1 according to the present invention comprises a first stationary focus unit 110, a first liquid crystal lens 120, a second stationary focus unit 210 and a second liquid crystal lens 220. Distances between the first stationary focus unit 110 and the first liquid crystal lens 120 and between the second stationary focus unit 210 and the second liquid crystal lens 220 are a fixed value. An adjustment of an application voltage allows focal lengths of the first liquid crystal lens 120 and the second liquid crystal lens 220 to be changed, which in turn can change an object distance and an image distance of the first liquid crystal lens 120, the second stationary focus unit 210 and the second liquid crystal lens 220 so as to attain a different enlargement effect. |
