Imaging lens assembly, camera module, and imaging apparatus

An imaging lens assembly (21) includes a mirror (31) rotatable about one end (31a), at least one lens (L1, L3, L4, L7) having a positive refractive power, at least one lens (L2, L5, L6) having a negative refractive power, and a reflective member provided between the lens (L7) provided closest to an imaging surface (S) and the imaging surface (S), in which the mirror (31) is inclined at a first angle (01) in a mirror storage state, and the lens (L1, L3, L4, L7) is inclined at a second angle (02) in a mirror storage state. The reflective member (33) is inclined at a first angle (02) in a photographing state such that a majority of incident light incident on the mirror (31) is reflected in a direction deviating from the lens (32), and is inclined at a second angle (02) in a photographing state such that a majority of incident light incident on the mirror (31) is reflected toward the lens (32) to form an optical path (OA1) optically connecting the mirror (31), the lens (32), and the reflective member (33), and th