Projection apparatus

摘要

There is provided a projection apparatus including a color synthesis section, a polarization conversion section, and a projection lens. The color synthesis section is configured to combine three-primary color light and emit combined light. The polarization conversion section is disposed on a light-emission side of the color synthesis section, the polarization conversion section being configured to put the color light in the combined light in a non-polarized state uniformly in all directions. The projection lens is configured to emit light provided by the polarization conversion section.

主权项

1. A projection apparatus, comprising:
a color synthesis prism configured to combine three-primary color light and emit combined light; a polarizer configured to put the combined light in a non-polarized state; a quarter waveplate disposed in a light path between a light-incident side of the polarizer and a light-emission side of the color synthesis prism, the quarter waveplate configured to convert between linearly-polarized light and circularly-polarized light; and a projection lens in a light path with the color synthesis prism and configured to emit the combined non-polarized light provided by the polarizer, wherein the polarizer is disposed in the light path between the color synthesis prism and the projection lens.