STRUCTURE FOR COOLING AN ILLUMINATION OPTICAL SYSTEM AND PROJECTION DISPLAY APPARATUS

摘要

A cooling structure for an illumination optical system includes: a fluorescent unit having a fluorescent layer that emits fluorescent light due to excitation light radiated from a light source; a fan for blowing cooling air to the fluorescent unit; and a duct that partitions an internal space and an external space, the internal space having the fluorescent unit disposed therein, and that guides the cooling air blown from the fan to the fluorescent unit.

主权项

1. A cooling structure for an illumination optical system comprises:
a fluorescent unit having a fluorescent layer that emits fluorescent light in response to excitation light that is irradiated from a light source; a fan that supplies cooling air to said fluorescent unit; and a duct that partitions an internal space in which the fluorescent unit is arranged from an external space and that guides cooling air supplied from said fan to said fluorescent unit.