| http://www.w3.org/ns/prov#value | - FIG. 2A is a schematic diagram of the meniscus-type real image optical system of the present invention; FIG. 2B is a reduced-scale version of the schematic diagram of FIG. 2A illustrating how a viewer can view the entire floating real image from a vantage point different from the vantage point of FIG. 2A;
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