Importance

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Abstract

Various embodiments provide a microlens array laminate, an optical device, and a LiDAR sensor unit that do not rely on a spot bonding method. In one embodiment, a microlens array laminate is formed by bonding a plurality of microlens arrays, each microlens array being obtained by spreading a microlens in a planar shape. An adhesive sheet is disposed between the bonded microlens arrays that are in surface bonding with the adhesive sheet interposed therebetween. The adhesive sheet is a light-absorbing material and has an opening to ensure an optical path of the microlens. An adhesive sheet may be applied to an optical device in which a lens laminate is formed by bonding a plurality of types of microlenses and an image sensor is disposed at a bottom of the lens laminate. The adhesive sheet and adjacent optical components thereto are in surface bonding. The adhesive sheet functions as a spacer for adjusting a unit gap.

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First Claim