| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-point image formation optical device which images a real image and a virtual image in a space on the same side as a point light source with respect to one plane on the device and in a space on the opposite side, respectively. SOLUTION: In the two-point image formation optical device 1, a plurality of two-surface corner reflectors 2 each including two planar mirror surfaces 21 and 22 orthogonally intersected with each other are so disposed that the intersecting lines 23 of the mirror surfaces 21 and 23 are parallel with each other on a first plane S1. With this configuration, a virtual images P1 imaged, with respect to the first plane S1, in a space on the side opposite to a point light source O toward which the two mirror surfaces 21 and 22 are oriented and a real image P2 is imaged in a space on the same side as the point light source O. This makes it possible to observe the virtual image P1 and the real image P2 that line on a staright line from a view point V in the space on the same side as the point light source O. COPYRIGHT: (C)2009,JPO&INPIT
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