LIGHT REFLECTING DEVICE, SENSOR DEVICE, AND LIGHTING DEVICE

A light reflective member (11) has a mirror surface (111) adapted to reflect light. A deflecting mechanism (12) is configured to oscillate the light reflective member (11) about an oscillation axis (A) extending in a direction along the mirror surface (111). A first regulating member (131) faces a portion of the light reflective member (11) including the oscillation axis (A) with a gap therebetween in a direction intersecting with the mirror surface (111), and is configured to regulate displacement of the oscillation axis (A) in the direction intersecting with the mirror surface (111).