DIFFUSER PLATE, DISPLAY DEVICE, PROJECTING DEVICE, AND LIGHTING DEVICE
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United States of America Patent
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N/A
Issued Date -
Mar 7, 2024
app pub date -
Oct 22, 2020
filing date -
Oct 25, 2019
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
To reduce unevenness in a luminance distribution in two directions of microlenses disposed in a form of a rectangular grid to improve uniformity of light distribution. Provided is a diffuser plate of a microlens array type including a base material, and a microlens array composed of a plurality of microlenses disposed on an X-Y plane on at least one surface of the base material using a rectangular grid as a reference, in which grid intervals Wx in an X direction of the microlenses disposed in the X direction of the rectangular grid are different from each other, grid intervals Wy in a Y direction of the microlenses disposed in the Y direction of the rectangular grid are different from each other, and surface shapes of the plurality of microlenses are different from each other.
First Claim
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