Image sensor and image-capturing device

Abstract

An image sensor includes: a plurality of microlenses arranged in a two-dimensional pattern; and a plurality of pixels that are provided in correspondence to each of the microlenses and receive lights of different color components, respectively. Pixels that are provided at adjacent microlenses among the microlenses and that receive lights of same color components, are adjacently arranged.

1 . An image sensor, comprising:
 an image-capturing unit that includes:
 a microlens; 
 a plurality of photoelectric conversion units that generate charges by performing photoelectric conversion of light that has passed through the microlens; and 
 an output unit that outputs a signal based upon the charges generated by the plurality of photoelectric conversion units; and 
   a signal processing unit that processes the signal output from the output unit, the signal processing unit and the image-capturing unit being stacked one above the other.   
     
     
         2 . The image sensor according to  claim 1 , wherein
 the output unit outputs the signal based upon the charges generated by the plurality of photoelectric conversion units.   
     
     
         3 . The image sensor according to  claim 1 , wherein
 the plurality of photoelectric conversion units share the output unit.   
     
     
         4 . The image sensor according to  claim 1 , wherein
 the image-capturing unit includes a storage that stores therein the charges generated by the plurality of photoelectric conversion units.   
     
     
         5 . The image sensor according to  claim 4 , wherein
 the plurality of photoelectric conversion units share the storage.   
     
     
         6 . The image sensor according to  claim 4 , wherein
 the output unit outputs the signal based upon the charges stored in the storage to the signal processing unit.   
     
     
         7 . The image sensor according to  claim 1 , wherein
 the image-capturing unit includes a plurality of pixels; and   each of the plurality of pixels contains:
 the plurality of photoelectric conversion units and the storage; and 
 the signal processing unit. 
   
     
     
         8 . The image sensor according to  claim 1 , further comprising
 a joint unit that is provided between the image-capturing unit and the signal processing unit and that electrically connects the output unit and the signal processing unit to each other.   
     
     
         9 . The image sensor according to  claim 8 , wherein
 the image-capturing unit includes a plurality of pixels, each pixel of the plurality of pixels contains the plurality of photoelectric conversion units and the storage; and   the joint unit electrically connects the output unit and the signal processing unit in the each pixel to each other.   
     
     
         10 . The image sensor according to  claim 1 , wherein
 the signal output from the output unit is an analog signal; and   the signal processing unit is a circuit that converts the analog signal into a digital signal.   
     
     
         11 . The image sensor according to  claim 1 , wherein
 the signal processing unit is a memory in which the signal output from the output unit is stored; or   the signal processing unit is a circuit that performs correlated double sampling for the signal output from the output unit.   
     
     
         12 . A focus detection device, comprising:
 an image-capturing unit that includes:
 a microlens that is transmissive to light having passed through an optical system; and 
 a plurality of photoelectric conversion units that generate charges by performing photoelectric conversion of light that has passed through the microlens; and 
   a detection unit that detects a deviation of an image formed by the optical system from the image-capturing unit based upon a signal corresponding to the charges generated by the plurality of photoelectric conversion units.   
     
     
         13 . The focus detection device according to  claim 12 , wherein
 the image-capturing unit further includes a filter that is transmissive to certain wavelength light in the light having passed through the microlens; and   the plurality of photoelectric conversion units perform photoelectric conversion of the certain wavelength light that has transmitted through the filter.