DIFFUSER PLATE, DISPLAY DEVICE, PROJECTING DEVICE, AND LIGHTING DEVICE

DIFFUSER PLATE, DISPLAY DEVICE, PROJECTING DEVICE, AND LIGHTING DEVICE

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 m...

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Hauptverfasser: ARIMA, Mitsuo, ISHIWATA, Masayuki, KANASUGI, Shunsuke
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Sprache:eng
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OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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creator ARIMA, Mitsuo
ISHIWATA, Masayuki
KANASUGI, Shunsuke
description 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.
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subjects OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
title DIFFUSER PLATE, DISPLAY DEVICE, PROJECTING DEVICE, AND LIGHTING DEVICE
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