Stacked-lens assembly and fabrication method for same
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United States of America Patent
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Mar 13, 2018
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app pub date -
Nov 13, 2015
filing date -
Nov 13, 2015
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Abstract
A stacked-lens assembly includes a lower substrate and an upper substrate. The lower substrate includes a lower-substrate top surface having thereon a lower element and an inner spacer, the inner spacer at least partially surrounding the lower element. The upper substrate includes an upper-substrate bottom surface opposite the lower-substrate top surface and having thereon an upper element and an outer spacer, the outer spacer (i) being attached to the inner spacer and (ii) at least partially surrounding the upper element. In any cross-section of the stacked-lens assembly parallel to the upper substrate and including both the inner spacer and the outer spacer, the entirety of the inner spacer is within a perimeter of the outer spacer.
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