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Title:
INFRARED TRANSMISSION COVER
Document Type and Number:
WIPO Patent Application WO/2020/100450
Kind Code:
A1
Abstract:
An infrared transmission cover (30) is applied to an infrared sensor (20) mounted on a vehicle. The infrared sensor (20) is provided with a transmitter (24) for transmitting infrared rays (IR) in the wavelength range of 900 nm to 1600 nm toward the outside of the vehicle and a receiver (25) for receiving the infrared rays (IR) impinging on and reflected by an object outside the vehicle. An infrared transmission cover (30) is provided with a cover body (32) for covering the transmitter (24) and the receiver (25). The cover body (32) includes a base material (33) and a film layer (36). The base material (33) is formed from a transparent resin material through which infrared rays (IR) can be transmitted and has grains (34) at a portion of the rear surface in the transmission direction of the infrared rays (IR). The film layer (36) covers the base material (33) from behind in the transmission direction while filling around the irregular portions of the grains (34), and reflects visible light while allowing the infrared rays (IR) to pass therethrough. The transmissivity of the cover body (32) for the infrared rays (IR) is greater than or equal to 50%.

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Inventors:
TAKEUCHI YASUHITO (JP)
MAEDA HIDETO (JP)
OKUMURA KOJI (JP)
OBA TATSUYA (JP)
OKAWA SHINTARO (JP)
ANDO HIROAKI (JP)
YOSHIZAWA YOSHINORI (JP)
Application Number:
PCT/JP2019/038282
Publication Date:
May 22, 2020
Filing Date:
September 27, 2019
Export Citation:
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Assignee:
TOYODA GOSEI KK (JP)
International Classes:
G02B5/22; B32B3/30; B60R19/52; C09D5/33; C09D7/61; C09D7/62; C09D201/00; G01S7/481
Domestic Patent References:
WO2016117452A12016-07-28
WO2018052057A12018-03-22
Foreign References:
JPH0756011A1995-03-03
JP2014071295A2014-04-21
JP2006165493A2006-06-22
JP2004004840A2004-01-08
JP2019168264A2019-10-03
JP2010072616A2010-04-02
JP2019056758A2019-04-11
JP2018031888A2018-03-01
JP2019057481A2019-04-11
JP2017077881A2017-04-27
JP2014069634A2014-04-21
JPS5610344B21981-03-07
JP2005227146A2005-08-25
JP2012088694A2012-05-10
JPH0498201A1992-03-30
JPH04315927A1992-11-06
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
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