Lens device and image capturing device

Abstract

According to an embodiment, a lens device includes a filter, an entire area of which transmits light of a common color. The filter includes a first filter region and a second filter region. The first filter region transmits light that is a first combination of colors out of colors of light to be received by an image sensor. The second filter region transmits light that is a second combination of colors of the colors of the light to be received by the image sensor. The first and second combinations of colors each include the common color.

1 - 12 . (canceled) 
     
     
         13 . An image capturing device comprising:
 a lens that transmits light;   a filter that transmits light;   an image sensor for receiving light transmitted through the lens and the filter; and   one or more processors, wherein   the filter includes a first filter region and a second filter region, the first filter region being a region for transmitting light in a first wavelength band, the second filter region being a region for transmitting light in a second wavelength band, and a common wavelength band being included in the first wavelength band and the second wavelength band,   the image sensor generates a reference image by receiving, light in the common wavelength band and generates a first image by receiving at least a part of light in the first wavelength band, and   the one or more processors calculate a distance to an object by calculating a color deviation of the first image with respect to the reference image.   
     
     
         14 . The image capturing device according to  claim 13 , wherein
 a number of sensors for receiving light in the common wavelength band is larger than a number of sensors for receiving light in a wavelength band differing from the common wavelength in the first wavelength band.   
     
     
         15 . The image capturing device according to  claim 13 , wherein
 the filter further includes a third filter region for transmitting light in a third wavelength band, and   the third wavelength band includes a part of the first waveband and a part of the second waveband.   
     
     
         16 . The image capturing device according to  claim 13 , wherein the third filter is one of a red filter, a green filter, and a blue filter. 
     
     
         17 . The image capturing device according to  claim 13 , wherein
 the first wavelength band includes two out of red, and green and blue, the second wavelength band includes two out of red, green and blue, and   one of the two included in the second wavelength band is included in the first wavelength band, and the other of the two included in the second wavelength band is not included in the first wavelength band.   
     
     
         18 . The image capturing device according to  claim 13 , wherein
 a combination of the first filter region and the second filter region is any one of:
 a combination of a yellow filter and a cyan filter, 
 a combination of a cyan filter and a magenta filter, and 
 a combination of a magenta filter and a yellow filter. 
   
     
     
         19 . The image capturing device according, to  claim 13 , wherein the lens is arranged between the image sensor and the filter. 
     
     
         20 . The image capturing device according to  claim 13 , wherein the filter is arranged between the image sensor and the lens. 
     
     
         21 . New The image capturing device according to  claim 13 , wherein
 a shape of the first filter region is point-symmetric to a shape of the second filter region with respect to an optical center of the lens.   
     
     
         22 . The image capturing device according to  claim 13 , wherein
 a distance between the first filter region and an optical center of the lens is equal to a distance between the second filter region and the optical center of the lens.   
     
     
         23 . The image capturing device according to  claim 13 , wherein
 the filter further includes a fourth filter region for transmitting light corresponding to light received by the image sensor, and   the fourth filter region is symmetrically arranged with respect to a line perpendicularly bisecting a line which connects a center of gravity of the first filter region and a center of gravity of the second filter region.   
     
     
         24 . The image capturing device according to  claim 13 , wherein
 the filter further includes fourth filter regions for transmitting light corresponding to light received by the image sensor, and   the fourth filter regions are symmetrically arranged with respect to a line perpendicularly bisecting a line which connects a center of gravity of the first filter region and a center of gravity of the second filter region.   
     
     
         25 . An image capturing device comprising:
 a lens that transmits light;   a filter that transmits light;   an image sensor for receiving light transmitted through the lens and the filter; and   one or more processors, wherein   the filter includes a first filter region and a second filter region, the first filter region being a region for transmitting light in a first combination of colors, the second filter region being a region for transmitting light in a second combination of colors, and the first filter region and the second filter region transmitting light in a common color,   the image sensor generates a reference image by receiving light in the common color and generates a first image by receiving light in other colors than the common color among the first combination of colors, and   the one or more processors calculate a distance to an object by calculating a color deviation of the first image with respect to the reference image.   
     
     
         26 . An image processing device comprising:
 one or more processors, wherein   the one or more processors obtain a reference image and a first image from an image sensor,   the image sensor receives light that has passed through a filter which includes a first filter region and a second filter region,   the reference image is generated from light in a common wavelength band that has passed through both the first filter region and the second filter region,   the first image is generated from at least a part of light, in a wavelength band that has passed through the first filter region, and   the one or more processors calculate a distance to an object by calculating a color deviation of the first image with respect to the reference image.