Image display device having ocular optical system causing images to overlap in a blending area

An image display device comprising:

• a plurality of display elements configured to emit image light corresponding to a plurality of separate areas;
• and
• an ocular optical system configured to emit, to a position corresponding to an eye of an observer, the image light emitted from the plurality of display elements, wherein
• the ocular optical system causes images to overlap with each other in a blending area including a boundary between the plurality of areas,
• an overlapping angle width in a direction orthogonal to the boundary of the blending area on a central visual field side is larger than an overlapping angle width in the direction orthogonal to the boundary of the blending area on a peripheral visual field side, and
• the central visual field side is closer to a visual axis EX of a user's eye than the peripheral visual field side is.