An endoscope image-acquisition device comprising: an objective optical system that focuses light from a subject to form two images in parallel; and an imaging element that has a plurality of microlenses arrayed at an entrance side of light coming from the objective optical system and in which pixels are allocated to the respective microlenses, wherein the two images of the subject focused by the objective optical system are formed in parallel in two effective light-receiving regions on the imaging element, wherein the center portions of the two effective light-receiving regions define a first axis; wherein the centers of light-sensitive portions at the pixels in the imaging element are displaced with respect to the optical axes of the microlenses such that displacements therebetween are gradually increased in peripheral directions away from the center portion of the imaging element toward peripheral portions thereof; the position of an exit pupil of the objective optical system is closer to an object than an imaging position of the objective optical system is; characterized in that the peripheral directions in which the displacements are gradually increased also include directions along the first axis, wherein the following conditional expression is satisfied: 0.5 ≤ θ H − θD / α ≤ 3 where α is an angle formed by a chief ray of the objective optical system at a horizontal maximum image height and an optical axis, θH is a chief-ray correction amount angle for the microlens at the horizontal maximum image height from the center portion of the imaging element, θD is a chief-ray correction amount angle for the microlens at a distance from the center portion of the imaging element, the position of an image height at the distance being the point of intersection between a line drawn toward the center portion of the imaging element at an angle α, with the optical axis of the objective optical system serving as an axis of symmetry, and the imaging element, wherein each of the chief-ray correction amount angle for the microlens at the horizontal maximum image height and the chief-ray correction amount angle for the microlens at the distance is an angle formed between a line connecting a center position of the microlens with the center of the respective light-sensitive portion and the optical axis of the objective optical system. an objective optical system that focuses light from a subject to form two images in parallel; and an imaging element that has a plurality of microlenses arrayed at an entrance side of light coming from the objective optical system and in which pixels are allocated to the respective microlenses, wherein the two images of the subject focused by the objective optical system are formed in parallel in two effective light-receiving regions on the imaging element, wherein the center portions of the two effective light-receiving regions define a first axis; wherein the centers of light-sensitive portions at the pixels in the imaging element are displaced with respect to the optical axes of the microlenses such that displacements therebetween are gradually increased in peripheral directions away from the center portion of the imaging element toward peripheral portions thereof; the position of an exit pupil of the objective optical system is closer to an object than an imaging position of the objective optical system is; characterized in that the peripheral directions in which the displacements are gradually increased also include directions along the first axis, wherein the following conditional expression is satisfied: 0.5 ≤ θ H − θD / α ≤ 3 where α is an angle formed by a chief ray of the objective optical system at a horizontal maximum image height and an optical axis, θH is a chief-ray correction amount angle for the microlens at the horizontal maximum image height from the center portion of the imaging element, θD is a chief-ray correction amount angle for the microlens at a distance from the center portion of the imaging element, the position of an image height at the distance being the point of intersection between a line drawn toward the center portion of the imaging element at an angle α, with the optical axis of the objective optical system serving as an axis of symmetry, and the imaging element, wherein each of the chief-ray correction amount angle for the microlens at the horizontal maximum image height and the chief-ray correction amount angle for the microlens at the distance is an angle formed between a line connecting a center position of the microlens with the center of the respective light-sensitive portion and the optical axis of the objective optical system.