Illumination device

Abstract

An illumination device includes a light source configured to emit light, a light adjustment device including at least one liquid crystal panel on a light outputting side of the light source and configured to adjust a light distribution range of light externally emitted from the liquid crystal panel by controlling each of transmittance of light transmitting through the liquid crystal panel and a transmission range of light transmitting through the liquid crystal panel, a temperature sensor configured to acquire information indicating a temperature of the liquid crystal panel, a heater configured to heat the liquid crystal panel, and a controller configured to operate the heater in a case where information indicating a temperature equal to or lower than a predetermined temperature is obtained by the temperature sensor.

Dependencies are inferred from the claim text.