Patent ID: 8432595

Claim:
A scanning image displayer, comprising: a beam provider configured to emit a laser beam; a beam scanner comprising a minute two-dimensional drive deflecting mirror; and an optical element comprising a prism comprising a first surface, a second surface, a third surface and a fourth surface, configured such that the laser beam emitted from the beam provider enters the prism through the first surface, the laser beam having entered the prism is reflected on a reflection surface located on the second surface and is emitted from the prism through the third surface, the laser beam emitted from the prism enters the two-dimensional drive deflecting mirror, and the resulting deflectively scanned laser beam emitted from the two-dimensional drive deflecting mirror enters the prism through the third surface and is emitted from the prism through the fourth surface; wherein the two-dimensional drive deflecting mirror is configured to deflectively scan the laser beam emitted from the prism in a main scanning direction and a sub-scanning direction and to project the deflectively scanned laser beam onto a surface to be projected, and a light intensity of the laser beam is controlled in accordance with image information to form an image, a flat surface of a substrate where the mirror of the two-dimensional drive deflecting mirror is formed is located parallel or almost parallel to an optical axis of the laser beam emitted from the beam provider, and the reflection surface of the prism is located so as not to receive the laser beam deflectively scanned by the two-dimensional drive deflecting mirror.