| 摘要 |
PROBLEM TO BE SOLVED: To secure a large see-through area without enlarging an eyepiece optical system 15 when a mark (virtual image V) is displayed to be aligned with a pupil, to reduce the size and weight of a device, and to allow a third person to easily align the pupil with the mark by visual recognition from the outside. SOLUTION: An optical path of light emitted from a light source 22 for mark and reflected on an HOE 18 is on the outside of the optical path of video light from a display element 14 to an optical pupil P. The degree of freedom in design of a mark display optical system 21 is increased, and there is no need to enlarge the eyepiece optical system 15 so as to secure the large see-through area even when the mark display optical system 21 is used. Also, the HOE 18 displays the virtual image V as the mark on the side of the optical pupil P to the HOE 18 by its own optical power by reflecting the light from the light source 22 for the mark on the side opposite to the optical pupil P. Thus, the third person can visually recognize the virtual image V from the outside. COPYRIGHT: (C)2011,JPO&INPIT
|
