摘要 |
PROBLEM TO BE SOLVED: To reduce the number of image sensors, and also to accurately take an image of a subject in a wide distance range such as a long distance and a short distance. SOLUTION: A long-distance imaging lens system 3 and a short-distance imaging lens system 4 are composed of a plurality of semicircular lenses, and the lenses of the long-distance imaging lens system 3 and the short-distance imaging lens system 4 are arranged such that the principal ray of the long-distance imaging lens system 3 and the principal ray of the short-distance imaging lens system 4 cross each other at the center of a diaphragm 5. The image of a long-distance subject is formed in the half area of an image sensor 6 by the long-distance imaging lens system 3, and the image of a short-distance subject is formed in the half area of the image sensor 6 by the short-distance imaging lens system 4, so that the image for a long distance and the image for a short distance obtained on the image sensor 6 can be prevented from interfering with each other. COPYRIGHT: (C)2011,JPO&INPIT |