| abstract |
PROBLEM TO BE SOLVED: To provide an image display device capable of providing a sufficiently good image with respect to a shift of a crystalline lens from the center of an eyepiece lens generated when an eyeball is moved, and a chromatic aberration at that time. One surface of a lens (L21, L22) of a convex lens close to the pupil H of an eyeball having a large deflection angle of a light beam is a conic surface with a conic constant K <0, and different glass materials are used to correct chromatic aberration. A combined bonded lens (L23, L24) is provided. The cemented lens is composed of at least two lenses, and the cemented portion of the cemented lens is concave on the pupil side, and the color dispersion of the cemented lens is smaller for the lens on the pupil H side, and chromatic aberration It has a convex and concave shape with a high correction effect. [Selection] Figure 2A |