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Microlens array and optical system including the same

  • US 10,443,811 B2
  • Filed: 11/23/2016
  • Issued: 10/15/2019
  • Est. Priority Date: 05/27/2014
  • Status: Active Grant
First Claim
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1. A microlens array including N microlenses arranged in at least one direction on an x-y plane, wherein a projection onto the x-y plane of the lens vertex of each microlens is arranged on or near a lattice point of a reference lattice on the x-y plane, the lattice spacing of the reference lattice in the at least one direction being D (millimeters), and when a boundary between two microlenses adjacent in the at least one direction is referred to as a side of a lens, a projection onto the x-y plane of the side is located approximately at the middle of projections onto the x-y plane of the vertexes of the two microlenses and therefore a distance between two sides facing each other and spaced in the at least one direction is approximately equal to D, andwherein a distance between a projection onto the x-y plane of a lens vertex i and a projection onto the x-y plane of a side between the lens vertex i and a lens vertex i+1 is
D/2+ε

  • i where ε

    i represents a dispersion of the distance from D/2 and for the N microlenses,

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