Patent ID: 7066610

Claim:
A rear projector, comprising: an image generator having an electric optical device that modulates a light beam irradiated by a light source and forms an optical image in accordance with image information and a projection optical system that enlarges and projects the optical image; a box-shaped casing that houses the image generator; a screen exposed on one of the lateral sides of the box-shaped casing onto which the optical image generated by the image generator is projected; and a reflection optical system that is located on the optical path of the light beam irradiated by the projection optical system to reflect the light beam toward the screen, the reflection optical system being attached to the interior of the casing by first holder holding the upper end and the lower end of the reflection optical system, an attitude adjuster that adjusts the position of the optical axis of the reflection optical system in up-shift direction relative to the light beam irradiated by the projection optical system being provided on the first holder on the upper end, the first holder on the upper end having a groove for an end of the reflection optical system to be inserted, and a gap being formed between the end of the reflection optical system and the bottom of the groove when the reflection optical system is attached.