| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to make the depth space and spread behind an information display visible large by interposing a Fresnel lens between the rear surface of a positive type liquid crystal display and a reflection surface of a light reflection surface. SOLUTION: The light diffusion reflection plate 24 of a dome shape is arranged in the central part of a case 27 and the positive type liquid crystal display 22 is arranged in the front part of this light diffusion reflection plate 24. At the time of this arrangement, for example, the Fresnel lens 28 having a convex lens effect is superposed on the rear surface of the positive type liquid crystal display 22 and is fixed to the light diffusion reflection plate 24 by a mounting frame 29 (a). The Fresnel lens 28 formed by templating this Fresnel lens 28 in such a manner that the spiral center thereof exists in an area exclusive of a visual recognition area (b). The depth in the longitudinal direction of the dome-shaped space 23 is, thereupon, stressed so as to deepen and the feel that the wall surface of the dome spreads divergently toward the deeper part may be given to a viewing person.
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