Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/085200
Kind Code:
A1
Abstract:
This optical device comprises: a sensor (41) for detecting light passing through a light-transmitting detection surface (43); and a light-transmitting film heater (30) disposed adjacent to an optical window (42) that has the detection surface and having a heating unit (35) for heating the optical window. The light-transmissive film heater has a temperature distribution in which the temperature of an outer region is higher than a region of the heating unit located closer to the center of the detection surface than the outer region, such outer region being located on the radial outer side of the detection surface in the heating unit and having a center line (CL) of the detection surface as the center.
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Inventors:
WATANABE MASASHI (JP)
FUKUDA KOTARO (JP)
OKAMOTO TAKUMI (JP)
OGURA TARO (JP)
FUKUDA KOTARO (JP)
OKAMOTO TAKUMI (JP)
OGURA TARO (JP)
Application Number:
PCT/JP2019/040930
Publication Date:
April 30, 2020
Filing Date:
October 17, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G03B17/55; B60R11/02; B60S1/60; C03C27/12; G02B7/02; G03B15/00; G03B17/02; G03B17/12; H04N5/225; H05B3/02; H05B3/20; H05B3/84
Foreign References:
JP2018117223A | 2018-07-26 | |||
JP2011113674A | 2011-06-09 | |||
JP2006309011A | 2006-11-09 | |||
JP2017220308A | 2017-12-14 | |||
JP2018116121A | 2018-07-26 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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