| 摘要 |
A sample-viewing cabinet in which four mirrors (13, 14, 15, 16) define, when viewed in plan, a square area into which e.g. a carpet sample (23) can be inserted, is characterised in that the particular mirror which, in use, forms the front mirror (13) of the cabinet is constructed so as to be effectively a one-way mirror which will reflect the image of the viewed sample into the remaining mirrors (14, 15, 16) but which will allow the sample and its reflected images to be viewed directly through the front mirror rather than having to be viewed from above it. The one-way mirror effect may be achieved by covering the inwardly facing surface of the front sheet of glass (13a) with an aluminium coated polyester film and illuminating the interior of the viewing enclosure with light (17) of sufficient intensity to cause the film covered sheet to reflect into the back mirror of the cabinet whilst allowing the back mirror to be viewed directly through the front sheet If all the mirrors are surface-silvered, rather than backsilvered, the image of the viewed sample is reflected infinitely in all directions without interruption. The ability to view the sample straight through the front mirror enables the entire enclosure defined by the mirrors to be angled towards the floor. The overall height of the cabinet can thus be reduced, so that people of widely varying heights can obtain an ample view of the images reflected inside the cabinet.
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