| 摘要 |
The image projection apparatus includes light modulation elements, a color separation/combination optical system (&bgr;) configured to, in a specific cross section, separate light source light into plural color lights, introduce the color lights to the corresponding light modulation elements, combine the modulated color lights and introduce the combined color lights to a projection optical system, a holding member holding the color separation/combination optical system, an electrical circuit substrate attached to the holding member parallel to the specific cross section and electrically connected to the light modulation elements, and an optical element insertable into and extractable from the color separation/combination optical system. The holding member has a configuration allowing, in a direction orthogonal to the specific cross section on an opposite side to an electrical circuit substrate side, the insertion/extraction of the optical element into and from the color separation/combination optical system. |
