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公开(公告)号：US20220405991A1
公开(公告)日：2022-12-22
申请号：US17443943
申请日：2021-07-28
Inventor： Mikiko ITO , Taehyung KIM , Youngjun JUNG , Byungkee LEE , Sangjun PARK , Seungryong CHO , Hyeongseok KIM , Jeongtae SOH
Abstract: An X-ray imaging apparatus includes an X-ray generator including a plurality of X-ray sources, an X-ray detector configured to detect X-rays radiated from the plurality of X-ray sources and generate a plurality of pieces of projection data, and a processor configured to apply log projection to each of the plurality of pieces of projection data, to apply weighted projection to the log-projected projection data, to apply a bidirectional ramp filter to the weighted-projected projection data, and to generate a tomographic image reconstructed based on each of the projection data to which the bidirectional ramp filter is applied.
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公开(公告)号：US20240339548A1
公开(公告)日：2024-10-10
申请号：US18628296
申请日：2024-04-05
Inventor： Jun-Bo YOON , Beom-Jun KIM , Min-Seung JO , Mikiko ITO , Byungkee LEE
IPC: H01L31/0236
CPC classification number: H01L31/02363
Abstract: The present disclosure relates to an anti-reflective nanostructure and a method of manufacturing the same, and more particularly, to an anti-reflective nanostructure having a refractive index close to a quintic refractive index profile and exhibiting an anti-reflection effect in which a reflectance is close to almost 0.
The anti-reflective nanostructure according to an embodiment of the present invention includes: a base part having a top surface; and a plurality of nanostructures arranged in a first direction on the top surface and each having a shape in which an upper portion has a thin and sharp shape, a lower portion has a width greater than that of the upper portion, and the width gradually increases in a direction from the upper portion to the lower portion.
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