Illumination optical unit liquid crystal projector and production method of liquid crystal projector

摘要

A lighting optical unit having an optical system 13 to 16 for irradiating light from a light-source lamp 11 on a predetermined object 22 in a uniform and/or convergent manner includes a reflector 1 for reflecting light from the light-source lamp 11 to provide converged light and an optical assembly 2 for collimating this converged light to provide a bundle of approximately parallel rays, wherein the bundle of approximately parallel rays is made to enter the optical system 13 to 16. Thus, in a liquid-crystal projector using a transmission type liquid-crystal panel with micro-lens, while a demand for increasing a quantity of light incident on an effective area of pixel of a liquid-crystal panel is being satisfied, the lighting optical unit can be made compact in size.