Invention Grant
- Patent Title: Sunlight shielding member
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Application No.: US16315332Application Date: 2017-07-24
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Publication No.: US10916354B2Publication Date: 2021-02-09
- Inventor: Kazuhiro Kato , Yuki Horie
- Applicant: Central Glass Company, Limited
- Applicant Address: JP Ube
- Assignee: Central Glass Company, Limited
- Current Assignee: Central Glass Company, Limited
- Current Assignee Address: JP Ube
- Agency: Crowell & Moring LLP
- Priority: JP2016-180585 20160915
- International Application: PCT/JP2017/026666 WO 20170724
- International Announcement: WO2018/051638 WO 20180322
- Main IPC: G21F1/12
- IPC: G21F1/12 ; B32B9/00 ; B32B15/04 ; G02B1/115 ; G02B5/26 ; G02B5/28 ; B32B15/00 ; G02B1/116

Abstract:
The object of the invention is to obtain a solar radiation shielding member that has a good visible light transmittance and shows no redness when viewed from the front and when obliquely viewed, without impairing the solar radiation transmittance. A solar radiation shielding member, wherein a first dielectric film, a first metal film, a second dielectric film, a second metal film, a third dielectric film, a third metal film, and a fourth dielectric film are stacked on a transparent substrate; the first dielectric film comprises at least two dielectric layers containing a layer having a refractive index of 2.4 or greater, and the first dielectric film as a whole has a refractive index in a range of 1.8-2.0; the second dielectric film has an optical film thickness of 165-201 nm; the third dielectric film has an optical film thickness of 147-182 nm; the fourth dielectric film has an optical film thickness of 75-120 nm; a geometric film thickness of the first metal film, the second metal film, and the third metal film is 30-40 nm in total; a geometric film thickness of the second metal film is in a range of 1.01-1.55 relative to a geometric film thickness of each of the first metal film and the third metal film.
Public/Granted literature
- US20190252086A1 Sunlight Shielding Member Public/Granted day:2019-08-15
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