Patent ID: 8817121

Claim:
An imaging apparatus comprising: an image sensor including a plurality of pixels, the plurality of pixels arranged in an array on an effective pixel area; a light guiding unit including a plurality of optical system windows distributed across an optical system window formation area, the light guiding unit being configured to guide light from an imaged object to the plurality of pixels; and a signal processing unit configured to perform signal processing on imaging information output by the image sensor, wherein the signal processing unit calculates the imaging information iteratively by shifting an increasing number of pixels at each iteration and saves a respective correlation value at each iteration, the signal processing unit accesses a plurality of predetermined matrices, wherein a matrix of the predetermined matrices contains a plurality of matrix elements, respective matrix elements being based on a correlation between the imaging information and a reference image data, the signal processing unit determines distance information of the imaged object based on the matrix elements and generates an image based on the matrix elements and the imaging information, and the signal processing unit generates a focused image of the imaged object and a defocused image of the imaged object based on the distance information.