公开(公告)号：US20240027269A1

公开(公告)日：2024-01-25

申请号：US17989527

申请日：2022-11-17

Applicant: TSINGHUA UNIVERSITY ,  BEIJING SEETRUM TECHNOLOGY CO., LTD.

Inventor： Kaiyu CUI ,  Jiawei YANG ,  Yidong HUANG ,  Wei ZHANG ,  Xue FENG ,  Fang LIU

IPC: G01J3/28 ,  G06T1/20 ,  G06T5/00 ,  G06T7/70

CPC classification number: G01J3/2823 ,  G06T1/20 ,  G06T5/002 ,  G06T7/70 ,  G01J2003/284 ,  G01J2003/2836 ,  G06T2200/04 ,  G01J2003/2826 ,  G06T2207/20084

Abstract: A reconstruction method for spectral image includes: obtaining a measurement image of an imaging object, and reconstructing and obtaining a spectral image of the imaging object according to the measurement image and a pre-calibrated sensing matrix. The spectral image includes spectral information at different position points of the imaging object. Through the method, defects of the time-consuming spectral image reconstruction method and the low resolution of the obtained spectral image in the related art can be overcame and the spectral image of the target imaging object can be obtained by reconstructing quickly and the obtained spectral image has high spatial resolution and no mosaic.

公开(公告)号：US20230326946A1

公开(公告)日：2023-10-12

申请号：US18017829

申请日：2021-08-03

Applicant: TSINGHUA UNIVERSITY

Inventor： Kaiyu CUI ,  Jiawei YANG ,  Yidong HUANG ,  Wei ZHANG ,  Xue FENG ,  Fang LIU

IPC: H01L27/146

CPC classification number: H01L27/14632 ,  H01L27/14627 ,  H01L27/14636 ,  H01L27/14685 ,  H01L27/14687

Abstract: A miniature spectrum chip includes a CIS wafer and a light modulation layer. The light modulation layer includes a plurality of micro-nano structure units arranged on the surface of a photosensitive area of the CIS wafer. Each micro-nano structure unit include a plurality of micro-nano structure arrays. In each micro-nano structure unit, different micro-nano structure arrays are two-dimensional gratings formed of internal units of different shapes. In each micro-nano structure unit, internal units provided in different micro-nano structure arrays have different shapes, and each group of micro-nano structure arrays has different modulation effects on light of different wavelengths, such that the degree of freedom of “shape” is fully utilized to obtain rich modulation effects on incident light. The precision of spectral restoration is improved. By using two-dimensional grating structures based on internal units of different shapes, rich wide-spectrum modulation characteristics with regard to incident light are achieved.