US 12,452,549 B2
Vehicular exterior member and far-infrared camera equipped vehicular exterior member
Tatsuo Nagashima, Chiyoda-ku (JP); and Kenji Kitaoka, Chiyoda-ku (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on May 31, 2024, as Appl. No. 18/679,776.
Application 18/679,776 is a continuation of application No. 17/647,193, filed on Jan. 6, 2022, granted, now 12,035,056.
Application 17/647,193 is a continuation of application No. PCT/JP2020/024384, filed on Jun. 22, 2020.
Claims priority of application No. 2019-136326 (JP), filed on Jul. 24, 2019.
Prior Publication US 2024/0323550 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 23/90 (2023.01); B60J 1/02 (2006.01); B60R 11/00 (2006.01); B60R 11/04 (2006.01); C03C 3/078 (2006.01); C03C 4/10 (2006.01); C03C 17/36 (2006.01); G02B 1/115 (2015.01); G02B 1/14 (2015.01); H04N 13/239 (2018.01); H04N 23/54 (2023.01); H04N 23/56 (2023.01)
CPC H04N 23/90 (2023.01) [B60J 1/02 (2013.01); C03C 3/078 (2013.01); C03C 4/10 (2013.01); C03C 17/3621 (2013.01); C03C 17/3628 (2013.01); C03C 17/3634 (2013.01); C03C 17/3649 (2013.01); H04N 13/239 (2018.05); H04N 23/54 (2023.01); H04N 23/56 (2023.01); B60R 2011/0026 (2013.01); B60R 11/04 (2013.01); C03C 2217/268 (2013.01); C03C 2217/285 (2013.01); C03C 2217/288 (2013.01); C03C 2217/73 (2013.01); C03C 2218/15 (2013.01); G02B 1/115 (2013.01); G02B 1/14 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A vehicular exterior member, comprising:
an exterior member having a light blocking region and a through hole formed in the light blocking region such that the exterior member is configured to be attached to a vehicle equipped with a far-infrared camera, and a far-infrared ray transmitting member formed in the through hole of the exterior member and forming a far-infrared ray transmitting region in the light blocking region of the exterior member,
wherein the through hole in the exterior member is penetrating through the exterior member from a vehicle exterior side to a vehicle interior side, and the far-infrared ray transmitting member has an antireflection film comprising at least one layer in a range of one to twelve layers and positioned on at least one of a surface on the vehicle exterior side and a surface on the vehicle interior side of the far-infrared ray transmitting member and is formed such that an average transmittance of far-infrared rays having a wavelength ranging from 8 to 13 μm is equal to or larger than 25%, a length of the longest straight line, in straight lines connecting any desired two points on the surface on the vehicle exterior side of the far-infrared ray transmitting member, is equal to or smaller than 80 mm, a diameter of the largest circle, in circles formed in a projected shape obtained by projecting the far-infrared ray transmitting member in an optical axis direction of the far-infrared camera, is equal to or larger than 12 mm, and an average thickness is equal to or larger than 1.5 mm.