Abstract: A projection display device includes a three-color LED source having a red LED, a green LED and a blue LED, a light pipe for making uniform illumination distribution of light emitted from the three-color LED source, an optical lens for making the light from the light pipe into parallel light, and a light modulation element for modulating the light from the optical lens. The optical lens includes a first toroidal lens element provided with a first entrance face on which the light whose angle with respect to an optical axis is a predetermined angle is incident to image the light, and a first exit face which emits the light incident from the first entrance face, and a second lens element provided with a second entrance face which is adjacently disposed to the first exit face in an optical axis direction.