Patent ID: 7992996

Claim:
A spectacles-type image display device, comprising: an image output unit that is disposed on a frame of spectacles and includes a display element for displaying an image and a projection lens for magnifying and projecting the image; and a reflection unit that is disposed adjacent to at least one of spectacle lenses and is configured, when a viewer wears the spectacles, to reflect image light that is output from the image output unit toward an eyeball of the viewer so that the viewer can see a virtual image of the image, wherein the reflection unit is a reflection member having no refractive power, and an effective luminous flux that is output from the image output unit and reaches the eyeball of the viewer is configured so that a width of the luminous flux perpendicular to an optical axis is the smallest at the reflection unit with respect to an optical axis cross-section of the image light in at least one direction.