Patent ID: 8025409

Claim:
An optical apparatus comprising: spectroscope means for splitting light irradiated from a light source into multiple color rays; condensing means for condensing the multiple color rays split by the spectroscope means; and trimming filters each trimming a wavelength component of at least one of the multiple color rays condensed through the condensing means and guiding the resulting ray to an optical modulator wherein a space is provided around each trimming filter for purposes of venting heat and allowing the trimming filter to be sloped, wherein each trimming filter is provided on one side, a condensing means side, of a glass plate and an input polarizer is provided on the other side, a liquid crystal display side, of the glass plate such that the trimming filter and the input side polarizer are provided as one part, and wherein each of the trimming filters is sloped in both of two directions that are orthogonal to an optical axis.