| 主权项 |
1. An imaging device for capturing images within an imaging area by means of receiving light, via an optical filter, from an object present in the imaging area using an image sensor that is configured with a pixel array having a two-dimensional arrangement of light receiving elements, wherein
the optical filter has a configuration in which a polarization filter layer and a spectral filter layer are laminated in light transmission direction, the polarization filter layer includes a first type area, which selectively transmits a polarization component of light in only a particular direction, and a second type area, which either transmits light without selecting a polarization component or selectively transmits a polarization component of light in a different direction than the particular direction, the first and second type areas being segmented into areas each corresponding to a unit area formed with one or more light receiving elements of the image sensor, the spectral filter layer includes a third type area, which selectively transmits light of only a specific wavelength band included in used wavelength bands that can pass through the polarization filter layer, and a fourth type area, which either transmits light without selecting a wavelength or transmits light of a wavelength band that is different than the specific wavelength band and that is included in the used wavelength bands, the third and fourth type areas being segmented into areas each corresponding to a unit area formed with one or more light receiving elements of the image sensor, of the polarization filter layer and the spectral filter layer, the layer on the lower side in lamination direction has an uneven top face in the lamination direction, and the optical filter is formed by filling the uneven top face with a predetermined filling material so as to even out the top face and then forming other layer. |
