Light field camera

A light field camera, comprising:

• a wide-angle main lens, configured to acquire an image signal and image the acquired image signal, wherein, on a virtual image plane of the wide-angle main lens, a distance between an image point and an optical axis is directly proportional to a distance between an object point corresponding to the image point and the optical axis, and wherein the virtual image plane has a first portion that is curved concavely on a side facing the wide-angle main lens;
• and
• a curved imaging array comprising a curved microlens array and a curved image sensor, wherein the curved microlens array is configured to reimage an image formed through imaging by the wide-angle main lens, and record, on the curved image sensor, an image formed by the reimaging, wherein a first side of the curved microlens array facing the wide-angle main lens is concave, wherein a first side of the curved image sensor facing the wide-angle main lens is concave;
• wherein both a curved shape of the curved microlens array and a curved shape of the curved image sensor are the same as a curved shape of the virtual image plane of the wide-angle main lens;
• and
• wherein a sum of a reciprocal of a vertical distance between the curved microlens array and the curved image sensor and a reciprocal of a vertical distance between the curved microlens array and the virtual image plane of the wide-angle main lens is equal to a reciprocal of a focal length of the curved microlens array.

A light field camera, comprising:

• a wide-angle main lens, configured to acquire an image signal and image the acquired image signal, wherein, on a first virtual image plane of the wide-angle main lens, a distance between an image point and an optical axis is directly proportional to a distance between an object point corresponding to the image point and the optical axis;
• and
• a curved imaging array comprising a curved microlens array and a curved image sensor, wherein the curved microlens array is configured to reimage, onto a second virtual image plane that coincides, an image formed through imaging by the wide-angle main lens, and wherein the curved microlens array is further configured to record, on the curved image sensor, an image formed by the reimaging, wherein a first side of the curved microlens array facing the wide-angle main lens is concave, and wherein the second virtual image plane coincides with a surface at the first side of the curved image sensor;
• wherein both a curved shape of the curved microlens array and a curved shape of the curved image sensor are the same as a curved shape of the first virtual image plane of the wide-angle main lens, and
• wherein a sum of a reciprocal of a vertical distance between the curved microlens array and the curved image sensor and a reciprocal of a vertical distance between the curved microlens array and the first virtual image plane of the wide-angle main lens is equal to a reciprocal of a focal length of the curved microlens array.