| 摘要 |
The present invention has as its object to provide an optical system which can generally be easily made compact and light in weight and wide in angle of field when image information displayed on a display unit such as a liquid crystal display is observed, and an image displaying apparatus using the same. To achieve this object, the optical system according to the present invention is an optical system for directing a beam from the display unit to a predetermined position to thereby enable an observer to observe image information on the display unit, and when a ray emerging from the center of the display surface of the display unit and passing through the center of the exit pupil of the optical system is defined as a central field angle principal ray, the optical system has a first optical element having on the same member a plurality of eccentric reflecting surfaces eccentric relative to the central field angle principal ray and having power, and an eccentric mirror system comprising at least one eccentric mirror eccentric relative to the central field angle principal ray and having power, and directs the beam from the display unit to the first optical element through the intermediary of the eccentric mirror system and directs the beam emerging from the first optical element to the predetermined position.
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