Patent ID: 7086737

Claim:
An optical apparatus, comprising: a plurality of optical modulation devices which modulate a plurality of color lights in accordance with image information for the respective color lights; a color synthesizing optical device which synthesizes the color lights modulated by the optical modulation devices and then emits the synthesized light, the plurality of optical modulation devices and the color synthesizing optical device being unitarily disposed, each of the optical modulation devices including an optical modulation element which performs optical modulation, and a holding frame which has an opening corresponding to an image forming region of the optical modulation device, and a plurality of holes provided in a peripheral edge of the opening, and which houses the optical modulation device therein; a plurality of pin spacers each including (i) at least two pins, each of the at least pins being inserted through one of the holes, and (ii) a coupler which connects the at least two pins; and an optical conversion element, which converts optical characteristics of incident light, attached to the coupler for at least two of the pins, the plurality of optical modulation devices and the color synthesizing optical device are unitarily constructed so that the coupler is arranged on a light-beam incident side of the optical modulation device.