| 摘要 |
<p>One plane of each convex lens (L21, L22) having a large light flux deflecting angle and being closer to the pupil H of an eye-ball is a Korenich plane having a Korenich constant, K < 0, and a laminated lens (L23, L24) formed by combining mutually different crystal materials is provided in order to correct aberration chromatica. The laminated lens is composes of at least two lenses, and the bonded portion of the laminated lens has a concave shape on the pupil side and a convex/concave/convex shape with the chromatic dispersion of the laminated lens smaller at a lens on the pupil H side to provide a high chromatic aberration correction effect. Accordingly, an image display unit can provide a sufficiently good image even at chromatic aberration produced when the deviation of a crystalline lens from the eye lens center occurs due to a moved eye-ball.</p> |
