| 摘要 |
An image projection apparatus is disclosed which is capable of correcting defocusing due to changes of the temperature of a projection lens, which are caused by various factors. The image projection apparatus includes an image-forming element which is illuminated with light from a light source, a projection lens which includes a focus lens and projects light from the image-forming element onto a projection surface, plural temperature detectors which are provided at positions different from each other in the image projection apparatus. The apparatus further includes a controller which controls the position of the focus lens on the basis of the detection results by the plural temperature detectors.
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