The invention relates to a
hybrid light field imaging
system. After being focused through a main lens, an object plane is imaged on an
image sensor through a variable-focus
microlens array, the object plane, the main lens, the variable-focus
microlens array and the
image sensor are sequentially placed on the same
horizontal axis, the distance from the variable-focus
microlens array to the main lens and the
image sensor is kept unchanged all the time, and when focal power of the variable-focus microlens array is zero, the
system obtains a common two-dimensional image; when the focal power of the variable-focus microlens array is changed from zero to phi, and namely, the
focal length f ' of the variable-focus microlens array is equal to 1 / phi, the
system obtains a four-dimensional
light field image. By changing the focal power of the variable-focus microlens array, the two-dimensional
light field image and the four-dimensional light field image can be switched at will. Compared with a common
light field camera, under the circumstance of not increasing the structural complexity of the system, the mode of
light field imaging and the mode of common two-dimensional imaging can be achieved at the same time, and a user can select and use the imaging system conveniently.