Light tunnel for DLP projection system

摘要

In order to provide a light transmitting space to reinforce the strength of a light tunnel (31) in a DLP projection system, and increase heat-resistance to warping or bowing, a light tunnel (31) of a DLP projection system includes a plurality of reflection panels (31a) provided in an anteroposterior direction; a holder (33a) where the reflection panel is placed; a first supporting member (35b) supporting an end of the reflection panel; and a second supporting member (35c) supporting a body of the reflection panel.