LIGHT GUIDE PLATE, MANUFACTURING DEVICE OF LIGHT GUIDE PLATE, MANUFACTURING METHOD OF LIGHT GUIDE PLATE, AND VIDEO DISPLAY APPARATUS USING THE SAME
To provide: a light guide plate that has a light diffraction part and can display videos in which color shifts are reduced; a manufacturing device of the light guide plate; a manufacturing method of the light guide plate; and a video display apparatus using the same.SOLUTION: A light guide plate has...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
01.03.2021
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Subjects | |
Online Access | Get full text |
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Summary: | To provide: a light guide plate that has a light diffraction part and can display videos in which color shifts are reduced; a manufacturing device of the light guide plate; a manufacturing method of the light guide plate; and a video display apparatus using the same.SOLUTION: A light guide plate has a light diffraction part for diffracting incident light with a multiple recorded hologram. The light diffraction part is formed with a plurality of holograms whose individual angles relative to an incident surface of the light guide plate are different, and is configured to diffract wavelengths different by the plurality of holograms when a certain parallel beam is incident.SELECTED DRAWING: Figure 6A
【課題】光回折部を有する導光板において、色ずれの少ない映像を表示させることができる導光板、導光板の製造装置、導光板の製造方法、及び、それを用いた映像表示装置を提供する。【解決手段】多重記録したホログラムにより入射光を回折する光回折部を有する導光板において、光回折部では、導光板の入射面に対する角度が異なる複数のホログラムが形成されており、ある平行光線を入射したときに複数のホログラムによって異なる波長を回折するように構成する。【選択図】図6A |
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Bibliography: | Application Number: JP20190152902 |