IMAGE DISPLAY APPARATUS, HEAD-MOUNTED DISPLAY, AND HEAD-UP DISPLAY

摘要

Provided is an image display apparatus in which a change in a color tone of an image which is sensed by a viewer, depending on the position of a pupil is suppressed in consideration of a human's relative luminous efficiency. To this end, the image display apparatus is configured to shift the diffraction peak wavelength of image light incident upon a pupil of a viewer when the pupil of the viewer is deviated from the center of an optical pupil, wherein a change in the intensity of light emitted from a light source in B and R wavelength ranges is opposite a change in a human's relative luminous efficiency. Namely, the intensity of light emitted from the light source is set to be low on the long wavelength side in the B wavelength range, and is set to be high on the long wavelength side in the R wavelength range.