Diffuser plate, designing method of diffuser plate, manufacturing method of diffuser plate, display device, projection device, and lighting device
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United States of America Patent
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Feb 28, 2023
Grant Date -
Nov 25, 2021
app pub date -
Aug 6, 2021
filing date -
Oct 29, 2015
priority date (Note) -
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Abstract
There is provided a method to manufacture a diffuser plate with better productivity and exhibiting an excellent diffusion property and having excellent durability with respect to light having large coherence, the microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The diffuser plate includes two or more unit cells that are continuously set in array, the unit cell includes a plurality of microlenses positioned on the surface of the transparent substrate, and ridge lines between the microlenses adjacent to each other are nonparallel to each other, and are nonparallel to the transparent substrate.
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