LIGHTING DEVICE AND PROJECTION TYPE DISPLAY DEVICE USING SAME

摘要

A lighting device includes excitation light sources (12 and 13), phosphor wheel (14) that emits green fluorescent light, a collimator lens (15) that converts the emitted fluorescent light into parallel luminous flux, a red laser (10), a blue laser (11), a dichroic mirror (22) that combines the excitation light supplied from the excitation light sources (12 and 13) and the light supplied from the red laser (10), and a cross dichroic prism (20) that combines the fluorescent light emitted from phosphor wheel (14), the light supplied from the red laser (10) and the light supplied from the blue laser (11). The cross dichroic prism (20) supplies the excitation light supplied from the excitation light sources (12 and 13) to the collimator lens (15) and the collimator lens (15) condenses the incident excitation light on the phosphor wheel (14).