| CPC G02B 6/30 (2013.01) [G02B 6/4224 (2013.01)] | 20 Claims |

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1. A device comprising:
a lens structure positioned within a cavity of a die,
wherein the die comprises a die fiducial,
wherein the lens structure comprises a lens fiducial so that the lens fiducial and the die fiducial coincide and lie in a plane orthogonal to a top surface of the die.
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