| 摘要 |
A technology reducing the number of components in a projector. Illuminating light from a lamp is made incident from a first surface of a TIR prism via an optical system, reflected, output from a second surface of the TIR prism, optically modulated by a DMD, and made incident to the second surface of the TIR prism. Projection light from the DMD is transmitted through the TIR prism, emitted from a third surface of the TIR prism, and enlarged by a projection lens, to form an image on a screen. Light from a light emitting element is reflected by the screen, made incident to the third surface of the TIR prism via the projection lens, reflected, and output from a fourth surface of the TIR prism, to form an image on an imaging element. |
