Display apparatus

A display apparatus, comprises:

• a transparent screen having a volume hologram, wherein the volume hologram is one of a transmissive volume hologram or a reflective volume hologram;
• a first image projection section on a side of a first main surface of the transparent screen, wherein the first image projection section is configured to project first image light onto the first main surface;
• a second image projection section on a side of a second main surface of the transparent screen, wherein the second image projection section is configured to project second image light onto the second main surface;
• a first light-shielding section configured to prevent external light from being directly incident on the first main surface at least at a first incident angle, wherein the first incident angle is same as an incident angle of the first image light;
• and
• a second light-shielding section configured to prevent the external light from being directly incident on the second main surface at least at a second incident angle, wherein
• the second incident angle is same as an incident angle of the second image light, and
• each of the first light-shielding section and the second light-shielding section comprises an inclined surface with an angle larger than a slant angle of the volume hologram.