LIGHTING APPARATUS AND VEHICLE LIGHT

An automotive lamp includes an LED and a light guide (20). The light guide (20) has the light, emitted from the LED, enter through an incident surface (20a) and emits the light frontward from an emission surface (20b) by guiding the light inside the light guide (20). The light guide (20) includes a plurality of steps (24) on a rear face (20c) side of the peripheral surface of the light guide (20). With the plurality of steps (24), the light traveling inside the light guide (20) is reflected toward the emission surface (20b). The pitch (P) between each of the plurality of steps (24) is set to 0.5 mm or below.