Eyeglass display rack with vision tester
AssigneeDiversified Products Corporation
InventorsSteven B. Liebers, Boris B. Liebers
Life of this patent
Estimating the term…
Abstract
A vision tester comprising a front wall and a back wall. Printed matter comprising words appears on the back wall, which is approximately 14 inches (35.6 cm.) from the front wall. The printed matter is exposed to ambient light from the top and front. The front wall has an opening through which the user of the vision tester looks. A plurality of magnifying lenses, of different diopter ratings, are selectively positionable behind the opening. Indicia appear to indicate the diopter rating of each lens. The user of the vision tester can determine the diopter rating of the appropriate lens needed for reading by determining which lens renders the printed matter clear and readable.
Claims12
In combination with a display rack holding plural pairs of non-prescription reading glasses so that they may be seen by a customer, a vision tester for determining the strength of the reading glasses required by the customer, said vision tester comprising a housing having an opening through which ambient light may pass, a front wall, and a back wall, said back wall having printed matter appearing thereon and which is arranged to be illuminated by ambient light through said opening of said housing, said front wall having a pair of eye openings through which the customer can look, a plurality of pairs of magnifying lens portions, and respective indicia indicating the magnify power of each of said pairs of magnifying lens portions, all of said pairs of magnifying lens portions being of different diopter ratings, each portion of each pair of said magnifying lens portions being of the same diopter rating as the other portion of said pair, said pairs of magnifying lens portions being mounted on movable means having peripheral portions extending beyond said housing arranged to be readily grasped directly by either hand of the user to selectively move said movable means to bring any particular pair of magnifying lens portions into alignment with said eye openings, whereupon the customer can look through said eye openings and the aligned lens portions to view said printed matter appearing on said back wall, said indicia indicating the magnifying power of each pair of magnifying lens portions being coupled to said movable means, whereupon indicia indicating the diopter rating of the particular pair of magnifying lens portions which is aligned with said eye openings is readily visible to the customer.
Dependencies are inferred from the claim text.