Two-element variable-power spherical lens
First Claim
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1. A VARIABLE-POWER LENS COMPRISING TWO LENS ELEMENTS ARRANGED IN TANDEM, ONE BEHIND THE OTHER ALONG THE OPTICAL AXIS OF THE LENS, AND MEANS FOR MOVING AT LEAST ONE OF SAID ELEMENTS RELATIVE TO THE OTHER IN A DIRECTION TRANSVERSE TO THE OPTICAL AXIS OF THE LENS, EACH OF SAID ELEMENTS HAVING POLISHED SURFACES WITH ONE OF THE SURFACES BEING A REGULAR SURFACE OF REVOLUTION AND AN OPTICAL THICKNESS VARIATION PARALLEL TO THE OPTICAL AXIS LESS THAN ONE-HALF THE LENS DIAMETER, AND THE OPTICAL THICKNESS OF EACH ELEMENT BEING SUBSTANTIALLY DEFINED BY THE FORMULA
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1 Claim
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1. A VARIABLE-POWER LENS COMPRISING TWO LENS ELEMENTS ARRANGED IN TANDEM, ONE BEHIND THE OTHER ALONG THE OPTICAL AXIS OF THE LENS, AND MEANS FOR MOVING AT LEAST ONE OF SAID ELEMENTS RELATIVE TO THE OTHER IN A DIRECTION TRANSVERSE TO THE OPTICAL AXIS OF THE LENS, EACH OF SAID ELEMENTS HAVING POLISHED SURFACES WITH ONE OF THE SURFACES BEING A REGULAR SURFACE OF REVOLUTION AND AN OPTICAL THICKNESS VARIATION PARALLEL TO THE OPTICAL AXIS LESS THAN ONE-HALF THE LENS DIAMETER, AND THE OPTICAL THICKNESS OF EACH ELEMENT BEING SUBSTANTIALLY DEFINED BY THE FORMULA
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Current AssigneeLuis W. Alvarez
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Original AssigneeLuis W. Alvarez
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InventorsAlvarez, Luis W.
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Application NumberUS04/418,372Time in Patent Office810 DaysField of SearchUS Class Current351/159.42CPC Class CodesG02B 3/00 Simple or compound lensesG02B 3/0081 having one or more elements...G02C 7/081 Ophthalmic lenses with vari...
