Title:
画像処理装置
Document Type and Number:
Japanese Patent JP5887840
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an image processing device capable of imaging, under suitable conditions, a substance on a transparent member such as a windshield, and information farther than the position of the transparent member.SOLUTION: An image processing device comprises: a transparent member; a light source 30 for irradiating the transparent member with light; an imaging lens having a focal point farther than the transparent member; an optical filter disposed behind the imaging lens; and an image sensor for receiving light having transmitted through the optical filter. The optical filter includes a substrate transmitting incident light from the imaging lens, and a spectral filter layer provided for a part of an effective imaging region on the substrate and transmitting light of the incident light having a first wavelength range including the oscillation wavelength range of the light source. With the pixel corresponding to a region provided with the spectral filter layer, an image of a substance attached on the other surface of the transparent member is taken with a first amount of exposure light; with the pixel corresponding to a region not provided with the spectral filter layer, an image farther than the position of the transparent member is taken with a second amount of exposure light.
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Inventors:
Hideaki Hirai
Izumi Ito
Izumi Ito
Application Number:
JP2011240845A
Publication Date:
March 16, 2016
Filing Date:
November 02, 2011
Export Citation:
Assignee:
株式会社リコー
International Classes:
H04N5/225; B60R1/00; G03B7/18; G03B11/00
Domestic Patent References:
JP2005195566A | ||||
JP2007184814A | ||||
JP10075397A | ||||
JP2007309655A |
Attorney, Agent or Firm:
Tadahiko Ito