US 12,461,361 B2
Electromagnetic wave sensor cover
Risa Hirano, Kiyosu (JP); Koji Fukagawa, Kiyosu (JP); and Hiroaki Ando, Kiyosu (JP)
Assigned to TOYODA GOSEI CO., LTD., Aichi (JP)
Filed by TOYODA GOSEI CO., LTD., Kiyosu (JP)
Filed on Aug. 30, 2022, as Appl. No. 17/899,125.
Claims priority of application No. 2021-147021 (JP), filed on Sep. 9, 2021.
Prior Publication US 2023/0074221 A1, Mar. 9, 2023
Int. Cl. G02B 5/28 (2006.01); G01S 7/481 (2006.01); G02B 27/00 (2006.01); G01S 7/497 (2006.01)
CPC G02B 27/0006 (2013.01) [G01S 7/4813 (2013.01); G02B 5/281 (2013.01); G01S 2007/4977 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electromagnetic wave sensor cover configured to be employed in an electromagnetic wave sensor including a transmitting portion that transmits an electromagnetic wave and a receiving portion that receives the electromagnetic wave, the electromagnetic wave sensor cover comprising a cover body configured to cover the transmitting portion and the receiving portion from a front in a transmission direction of the electromagnetic wave from the transmitting portion, wherein:
the cover body includes:
a base layer made of synthetic resin and permitting passage of the electromagnetic wave;
one or more metal oxide layers permitting passage of the electromagnetic wave and being conductive;
one or more low refractive index layers permitting passage of the electromagnetic wave and made of material that has a lower refractive index than material of the metal oxide layer; and
two electrodes disposed in contact with the metal oxide layer to energize the metal oxide layer so that the metal oxide layer generates heat,
the base layer includes a front surface and a rear surface in the transmission direction, the metal oxide layer and the low refractive index layer are laminated adjacent to each other in the transmission direction,
a laminate of the metal oxide layer and the low refractive index layer is laminated on the front surface or the rear surface of the base layer, and
the laminate of the metal oxide layer and the low refractive index layer is laminated on the rear surface of the base layer.