| 摘要 |
An image display apparatus having a wide view angle of an observed image with a small (thin) structure, which includes: two image forming elements; and an optical system guiding a beam from the image forming elements to two observation areas, wherein the system includes curved reflecting surfaces, and is symmetrical about a symmetry plane intermediate between the observation areas, in which a beam from the image forming element on a side of the symmetry plane is reflected on a curved reflecting surface on the side, reflected on a curved reflecting surface on the other side, is reflected on the surface on the side, and transmits a surface SLa to be guided to the observation area on the side; and an area, in the surface Sla, which a beam LLa traveling along an optical path closest to the symmetry plane transmits, has a shape having positive refractive power.
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