| abstract |
An illumination device and a projector capable of reducing a decrease in moving image response and reducing speckles when used in combination with a hold-type spatial light modulation device. A light source unit that supplies beam light, a diffractive optical element that is a shaping optical unit that shapes the beam light into a linear light beam substantially parallel to the X direction, which is the first direction, and a first direction. Rotating prism 1 that is a scanning unit that scans a linear light beam in the Y direction, which is a second direction substantially orthogonal to And 5. [Selection] Figure 1 |