Optical film, optically anisotropic film, laminate, and display device

An optical film having a change region where at least one of an in-plane retardation or an in-plane slow axis direction is changed,

• wherein, in a case where the in-plane retardation is changed in the change region, the in-plane retardation gradually changes from a center of the change region toward an outer direction, and
• in a case where the in-plane slow axis direction is changed in the change region, a line which passes through the center of the change region and is parallel to an average direction of in-plane slow axes of the change region is defined as a first reference line, a line which passes through the center of the change region and is orthogonal to the first reference line is defined as a second reference line, and two lines which pass through the center of the change region and form an angle of 45° with the first reference line and the second reference line are defined as third reference lines, the in-plane slow axis direction at the center is parallel to the average direction of the in-plane slow axes, and the in-plane slow axis direction on the third reference lines gradually changes from the center of the change region toward the outer direction.