LIGHT SOURCE UNIT, MANUFACTURING METHOD FOR THE LIGHT SOURCE UNIT, AND PROJECTION TYPE VIDEO DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To constitute a light source unit of a projection type video display device so that a high-luminance video display is available. SOLUTION: An optical unit is constituted so that a light-transmissive member, such as a lens, is arranged at an opening part of a reflector and an end surface for positioning the light-transmissive member at the opening part is formed at a fixed distance from the reflecting surface of the reflector.