Micro Lens Array, Diffuser Plate, and Illumination Apparatus
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United States of America Patent
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Issued Date -
Nov 30, 2023
app pub date -
May 25, 2023
filing date -
May 25, 2022
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Abstract
A micro lens array including a honeycomb structure including columns of the lens elements alternately arrayed, each of the lens elements having a shape of a hexagon in a plan view and being linearly arranged such that sides of the hexagon in a predetermined direction are in contact with each other, wherein a mathematical expression indicating a SAG of the lens element includes a term of AxmynXmYn (m and n are integers except 0), in a case where, when an optical axis of the lens element is an origin, Y is a coordinate in an arrangement direction of the lens elements in the columns of the lens elements, X is a coordinate in an array direction in which the columns of the lens elements are alternately arrayed, and A is a predetermined coefficient.
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