Patent ID: 8390933
Filing Date: 2013-03-05
Classification: G02B

Abstract:
1. An image display device including a light source and scanning means for scanning of a light beam emitted from the light source, the scanning means comprising: (a) a first mirror configured to be pivotable about a first axis as a pivot axis extending along a first direction, the light beam emitted from the light source being incident on the first mirror; (b) first light deflecting means for having an axis line extending along a second direction different from the first direction, a light beam output from the first mirror being incident on the first light deflecting means at a first incident angle, the first light deflecting means outputting collimated light that forms a predetermined first output angle with the second direction depending on the first incident angle of the light beam in association with pivoting of the first mirror; (c) a second mirror configured to be pivotable about a second axis as a pivot axis extending along a third direction, the collimated light output from the first light deflecting means being incident on the second mirror; and (d) second light deflecting means for having an axis line extending along a fourth direction different from the third direction, collimated light output from the second mirror being incident on the second light deflecting means at a second incident angle, the second light deflecting means outputting collimated light that forms a predetermined second output angle with the fourth direction depending on the second incident angle of the collimated light in association with pivoting of the second mirror.