公开(公告)号：US11914179B2

公开(公告)日：2024-02-27

申请号：US17263161

申请日：2019-01-18

Applicant: ZHEJIANG UNIVERSITY

Inventor： Weidong Shen ,  Huaxin Yuan ,  Chenying Yang ,  Xiaowen Zheng ,  Wen Mu ,  Zhen Wang ,  Wenjia Yuan ,  Yueguang Zhang

IPC: G02B5/26 ,  G02B7/00

CPC classification number: G02B5/26 ,  G02B7/008

Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.

公开(公告)号：US09625627B2

公开(公告)日：2017-04-18

申请号：US14412361

申请日：2014-01-02

Applicant: ZHEJIANG UNIVERSITY

Inventor： Weidong Shen ,  Chenying Yang ,  Yueguang Zhang ,  Xu Liu

IPC: G02B5/18 ,  G02B27/44 ,  G02B5/22 ,  G02B5/20 ,  G02B1/02

CPC classification number: G02B5/207 ,  G02B1/02 ,  G02B5/1819 ,  G02B5/201

Abstract: The belt ply feeder and a feeding method include: when a belt ply is conveyed to the front end of a conveying forming board, a force is exerted by a perpendicular adjustment device to drive a conveying forming board bracket to swing upward and rotate around a pivot shaft of a rack to positions at which the upper surface of the conveying forming board is tangential to the periphery of a belt ply drum. According to this arrangement, the belt ply is tangential to the belt ply drum all the time and a belt ply is in firm contact with a belt ply drum regardless of the size of the belt ply drum when wrapping the belt ply around the belt ply drum. Accordingly, the quality of tire shaping can be improved.

公开(公告)号：US10481305B2

公开(公告)日：2019-11-19

申请号：US15329569

申请日：2015-09-21

Applicant: ZHEJIANG UNIVERSITY

Inventor： Weidong Shen ,  Chenying Yang ,  Yueguang Zhang ,  Bo Fang ,  Xu Liu

IPC: B32B7/02 ,  G02B5/00 ,  B32B9/00 ,  B32B15/00 ,  G02B1/115

Abstract: The present invention discloses a visible near-infrared ultra-broadband absorber and its preparation method, comprising a substrate and a five-layer optical film, wherein the bottom film is a bottom metal absorbing layer; a top germanium layer is provided on the top of the bottom metal absorbing layer; and remaining three layers are provided on the top of the top germanium layer with gradually decreasing refractive indexes from the bottom to the top. The present invention is based on the blocking effect of the metal absorbing layer and broadband anti-reflection film stack of the germanium layer, which has realized visible near-infrared ultra-broadband absorption with high efficiency and good angle insensitivity, and has fully surpassed traditional absorbers in terms of performances. Compared with conventional broadband absorbers and artificial electromagnetic absorbers proposed in recent years, the compact multilayer film structure in the present invention is simpler and avoids complicated nano-fabrication techniques. Therefore, it can significantly reduce production cost and shorten the production cycle, and is thus suitable for large-scale mass production.