| 摘要 |
<p>A small-sized, bright, high-performance viewing optical system comprising an eyepiece optical system having a decentered prism and a reflection image display unit, wherein the display unit (3) includes a light source (4) and an illuminating light guide prism (6) for guiding light from the light source (4) so as to allow the light to illuminate the display screen from the front side thereof, the eyepiece optical system includes a prism (10) having an incident surface (13) for directing light reflected from the display screen into the prism through an illuminating light guide prism (6), a reflecting surface (12), and an exit surface (11) for allowing the light to exit from the prism, the at least one of the reflecting surface is decentered with respect to the optical axis and formed into a rotational asymmetric curve for correcting the decentration aberration and giving power, and an image is guided to the position of a pupil (2) under the condition that the distance between the incident surface (13) and the display screen fulfills a predetermined condition. An image display comprising such a viewing optical system is also disclosed. <IMAGE></p> |
