Image pickup apparatus

摘要

The image pickup apparatus includes an imaging optical system to cause light rays from an object plane to image on an image side conjugate plane with respect to the object plane, an image sensor including pixels and to photoelectrically convert the optical image, and an optical element array including optical element cells each of which conjugates the image side conjugate plane with the image sensor and which are arranged so as to cause light rays from a same point on the object plane to enter mutually different pixels depending on positions on a pupil plane of the imaging optical system through which the light rays pass. An arrangement pitch of the optical element cells in the optical element array is 25 times or less of an arrangement pitch of the pixels in the image sensor.

主权项

1. An image pickup apparatus comprising:
an imaging optical system to conjugate an object plane with an image side conjugate plane; an image sensor including a plurality of pixels and to photoelectrically convert light rays from the imaging optical system; and an optical element array including a plurality of optical element cells each of which conjugates the image side conjugate plane with the image sensor, mutually different ones of the optical element cells causing light rays from a same point on the object plane to enter mutually different pixels depending on positions on a pupil plane of the imaging optical system through which the light rays pass, wherein: an arrangement pitch of the optical element cells in the optical element array is 25 times or less of an arrangement pitch of the pixels in the image sensor; and the following condition is satisfied:1.0≤ΔLAΔ⁢(1-σ2σ1)≤30.0 where σ1 represents a distance from an object side principal plane of the optical element array to the image side conjugate plane, σ2 represents a distance from an image side principal plane of the optical element array to the image sensor, Δ represents the arrangement pitch of the pixels, and ΔLA represents the arrangement pitch of the optical element cells.