| 摘要 |
A portable projection display apparatus (100) of the present invention comprises: a projection device (8) including an image forming means (2) for forming image light and an optical lens system (7) which projects the image light, obtained by the image forming means, toward a projection surface (S1); a swinging detecting means (12) for detecting a relative swinging of the projection device (8) with respect to the projection surface (S1); and a correcting means (11) for correcting a projection direction of the image light with respect to the projection surface (S1) in the projection device (8) in accordance with an output value of the swinging detecting means (12), so as to cancel a movement of the image light in the projection direction that is caused by the swinging.
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