Image display apparatus and image scanning apparatus

摘要

This image display apparatus includes a light source emitting a laser beam, a scan mirror projecting an image by vertically and horizontally scanning the laser beam by swinging, and a scan control portion rendering the horizontal scanning amplitude of the scan mirror on the side of a projection image having a reduced length relatively large as compared with the horizontal scanning amplitude of the scan mirror on the side of the projection image having an increased length with respect to distortion in which the length of the upper side of the projection image and the length of the lower side of the projection image are different from each other.

主权项

1. An image display apparatus comprising:
a light source emitting a laser beam; a scan mirror projecting an image by a first scanning and a second scanning which scans the laser beam along directions perpendicular to each other, respectively; and a scan control portion rendering a scanning amplitude of the scan mirror at the second scanning on a side of a projection image having a decreased length relatively large as compared with a scanning amplitude of the scan mirror at the second scanning on a side of the projection image having an increased length; wherein the scan control portion switches between the first scanning from the upper side of the projection image to the lower side of the projection image and vertical the first scanning from the lower side of the projection image to the upper side of the projection image so that a scanning direction of the first scanning can be switched to a direction from a side on which the scanning amplitude of the scan mirror at the second scanning is relatively decreased to a side on which the scanning amplitude of the scan mirror at the second scanning is relatively increased.