| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a virtual image display device capable of setting an aspect ratio to a desired state with respect to image light that enters eyes of an observer as a virtual image while satisfying limitations on design. <P>SOLUTION: By extending conversion in an aspect ratio converting optical system, an aspect ratio of a virtual image formed can be converted to an aspect ratio of 16:9 wider than an original aspect ratio of 4:3 of an image region of an image display device. Accordingly, for example, even when a lateral width of an image forming device including the image display device with respect an entire virtual image display device is limited by design and an aspect ratio of the image region cannot be set to a relatively wider aspect ratio, for example 16:9, required for video and becomes an aspect ratio close to that of a square, for example aspect ratio of 4:3, an aspect ratio of image light recognized by eyes of an observer as the virtual image can be adjusted to a desired state, for example the aspect ratio of 16:9, by aspect ratio conversion by means of a cylindrical lens. <P>COPYRIGHT: (C)2013,JPO&INPIT |
