Lighting unit and image projector

摘要

A lighting unit and an image projector that cool a drive source that drives a color wheel favorably and prevents dust from collecting on the color wheel are provided. The lighting unit includes a color wheel that divides light from a light source into colors different from each other time-divisionally, a drive source that drives the color wheel such as a color motor, and an optical device that illuminates light that passes through the color wheel on an image generating device such as a DMD that generates a projection image. The lighting unit includes a cooling device that draws heat from the drive source to cool the drive source.

主权项

1. A lighting unit, comprising:
a color wheel to time-divide light from a light source into different colors; a motor to drive the color wheel; a cooling device that contacts the motor and draws heat from the motor to cool the motor; an optical device to direct light that passes through the color wheel onto an image generating device that generates a projection image; and a metal holder that holds the optical device, wherein the cooling device contacts the holder.