| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow reproduction of a natural and accurate starry sky with inconspicuous division boundaries while keeping the same position precision of stars as conventional projection even in the case of a considerable increase in the number of projected stars and to allow easy visual determination of a direction to be adjusted to perform the adjustment even in the case of the position precision exceeding an allowable range, with respect to divisional projection in a planetarium. <P>SOLUTION: A divisional projection area 1 of a projector unit is further divided to two or more mutually independent intra-projector divisional projection areas 2 to be projected by the same optical system in a projector, and intra-projector divisional projection areas are projected so that intra-projector divisional projection areas in divisional projection areas of projector units adjacent to each other do not overlap. <P>COPYRIGHT: (C)2013,JPO&INPIT |
