The invention relates to a
waveguide display
system for eliminating
chromatic aberration and based on a holographic
diffraction optical element. The
waveguide display
system comprises an input coupler, a
waveguide and an
output coupler. When color light is irradiated on a transmission-type plane
grating serving as the input coupler after passing a collimating lens, the plane
grating exerts the dispersion characteristic and disperses the light into the light
waves in different colors, the light
waves enter the waveguide by different angles, and then the light continues to be transmitted in the waveguide, and when the light is transmitted to a reflection-type volume
grating serving as the
output coupler, the light
waves are modulated through the volume grating, the light waves in which dispersion occurs are reflected out of the waveguide in the same direction and enter the eyes of people, people can see color pictures with the eyes, and therefore the
chromatic aberration can be eliminated. Meanwhile, according to the waveguide display
system for eliminating
chromatic aberration and based on the holographic
diffraction optical element, the negative effects of reduction of
diffraction efficiency, the increase of the size and the weight of the system and the like cannot be caused, and the waveguide display system can be widely applied to the field of display systems.