| 摘要 |
This optical device is provided with: an optical conversion unit which converts light from a light source; a light guide plate which guides light from the light source converted by the optical conversion unit in a plane parallel to an emission surface; and a deflection unit which forms an image by deflecting light guided by the light guide plate and by emitting the same from the emission surface. The optical conversion unit converts light emitted from the light source to light emitted from a smaller area by concentrating or diverging said light in a plane parallel to the emission surface. The deflection unit forms an image that differs depending on the direction of observation. |
