ILLUMINATION APPARATUS

摘要

An illumination apparatus includes a light source, a light-receiving unit, and a light guide unit formed in an arc shape. The light guide unit includes a light incidence section on which light from the light source is incident. The light incidence section is disposed on an outer circumferential side of the light guide unit, and faces the light source. The light guide unit further includes a first reflecting section having a first and a second region, and a second reflecting section having first and second surfaces. The first surface reflects the light incident from the light incidence section toward the first region, and the second surface reflects the light incident from the light incidence section toward the second region. The light-receiving unit is disposed at a position between the first and the second surfaces.

主权项

1. An illumination apparatus comprising:
a light source; a light-receiving unit; and a light guide unit having an arc shape, wherein the light guide unit comprises: a light incidence section on which light from the light source is incident, wherein the light incidence section is disposed on an outer circumferential side of the light guide unit and faces the light source; a first reflecting section having a first arc-shaped region and a second arc-shaped region disposed at a position further from the light source than the light incidence section in a circumferential direction of the arc of the light guide unit, wherein the first region is disposed closer to one end of the arc of the light guide unit than the light incidence section, and the second region is disposed closer to another end of the arc of the light guide unit than the light incidence section; a second reflecting section having a first surface for reflecting the light incident from the light incidence section toward the first region, and a second surface for reflecting the light incident from the light incidence section toward the second region; and a light-emitting section configured to emit the light reflected by the first reflecting section, wherein the light-receiving unit is disposed at a position between the first and the second surfaces.