公开(公告)号：US12265202B2

公开(公告)日：2025-04-01

申请号：US18111518

申请日：2023-02-17

Applicant: AGC Inc.

Inventor： Yoji Yasui ,  Kazunobu Maeshige ,  Takahiro Mashimo ,  Takuji Oyama ,  Nobutaka Aomine ,  Manaya Kubono

IPC: G02B1/10 ,  B60R1/00 ,  G02B13/14

Abstract: To appropriately suppress reflection of far-infrared rays, and appropriately form an antireflection film. A far-infrared ray transmission member (20) includes a base material (30) that transmits far-infrared rays, and a functional film (32) that is formed on the base material (30) and includes a low refractive index layer (34) containing oxide as a principal component and having a refractive index equal to or smaller than 1.5 with respect to light at a wavelength of 10 μm. The low refractive index layer (34) contains MgO as a principal component, and a content of MgO is equal to or larger than 50 mass % and equal to or smaller than 100 mass % with respect to the entire low refractive index layer (34).

公开(公告)号：US11994699B2

公开(公告)日：2024-05-28

申请号：US17145536

申请日：2021-01-11

Applicant: AGC Inc.

Inventor： Hiroyuki Yamamoto ,  Takahiro Mashimo ,  Takuji Oyama ,  Shinya Tahara ,  Tatsuo Nagashima

IPC: G02B5/20 ,  B60J1/00 ,  B60J1/02 ,  G02B5/28

CPC classification number: G02B5/208 ,  B60J1/001 ,  B60J1/02 ,  G02B5/281 ,  G02B5/285

Abstract: An optical member includes a transparent substrate containing at least one substance selected from glass, a glass ceramic, silicon, and sapphire, and having an infrared high-transmittance region in which an optical transmittance is 78% or more in a wavelength band of 700 nm to 1800 nm; and an optical interference film disposed on a main surface of the transparent substrate corresponding to the infrared high-transmittance region, wherein a transmittance of light, of the optical member, of at least one wavelength λ3 in the wavelength band of 700 nm to 1800 nm in a region of the optical member corresponding to the infrared high-transmittance region of the transparent substrate has a minimum value of 86.5% or more and has a difference between the minimum value and a maximum value of 9% or less in a range where an incidence angle is from 0 degrees to 60 degrees.

公开(公告)号：US20200239360A1

公开(公告)日：2020-07-30

申请号：US16849011

申请日：2020-04-15

Applicant: AGC Inc.

Inventor： Akihisa Minowa ,  Takahiro Mashimo ,  Shunji Wachi ,  Hitoshi Saiki

IPC: C03C17/42 ,  C03C21/00 ,  C23C14/00 ,  C23C14/06 ,  C23C14/10 ,  C23C14/12 ,  C23C14/34 ,  C23C14/24 ,  C23C14/58 ,  G02B1/18 ,  G02B1/11

Abstract: The present invention relate to a transparent substrate laminate (10) having a transparent substrate (12), an antireflection layer (14) and an antifouling layer (16) in this order, the antireflection layer (14) contains a low-refractive index layer (142) and a high-refractive index layer (144) laminating alternately, the antifouling layer (16) contains a fluorine-containing organic compound, and when washing with ethanol and washing with a fluorine solvent under specific conditions are carried out on the antifouling layer (16) in this order, the antifouling layer (16) satisfies a ratio (i)/(ii) being more than 1 in which (i) represents a fluorine amount after the washing with ethanol and (ii) represents a fluorine amount after the washing with the fluorine solvent, and in which the fluorine amount (F amount) is measured by using an X-ray fluorescence instrument (XRF).