| 摘要 |
A spectacles-type image display device having an image output unit that includes a display element that displays images and is disposed on a spectacle frame and a reflection unit that is disposed adjacent to at least one of spectacle lenses and reflects the image light that is output from the image output unit toward the eyeball so that the viewer can see a virtual image of the image is provided. The reflection unit is a reflection member having a positive 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 the width of the luminous flux perpendicular to an optical axis is minimum at the reflection unit with respect to the optical axis cross-section parallel to an incident surface of the optical axis relative to the reflection unit.
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