Tinted polarizing optical element and method for manufacturing such an element
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United States of America Patent
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Jun 5, 2018
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Nov 13, 2014
app pub date -
Sep 4, 2012
filing date -
Sep 6, 2011
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Abstract
The invention relates to a tinted polarizing optical element (1), including a polarizing assembly (5) consisting of at least a first layer (7) and a second layer (9) made of a thermoplastic or thermosetting material and sandwiching a polarizing film (11) therebetween, and to a method for manufacturing said optical element. The latter further comprises a third layer (13) made of a tinted thermoplastic material adhering, by means of injection, to the second layer (9), characterized in that the element includes a fourth layer (15) which is made of a crystal thermoplastic material adhering, by means of injection, to the third layer (13), and which is to be surfaced so as to achieve a corrective effect.
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