| 摘要 |
The present image display device is an image display device that scans laser beams emitted from light sources 101, 102 and 103 to form an image on a projection surface, and includes laser beam diameter-converting optical systems 104 that shape a beam waist of a laser beam, and horizontal scanner 106 and vertical scanner 107 for scanning a laser beam. Beam diameter-converting optical systems 104 adjust the beam diameter at the position of mirror 26, which is a beam deflector for scanner 106 and 107, to be smaller than the mirror diameter. Also, beam diameter-converting optical systems 104 shape beam waist 110 so that a full width at half maximum of the intensity, which corresponds to beam diameter 114 or 116, is always smaller than pixel pitch 115 or 117 in projection range 118 defined between first projection surface 112 and second projection surface 113.
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