| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a projector capable of appropriately detecting the opening/closing state of a lens cover. <P>SOLUTION: The projector includes a projection lens for projecting an optical image and housings 21 and 23. The housings 21 and 23 includes: the lens cover 7 that is provided so as to freely slide to the housings 21 and 23, and that slides in one direction so as to cover the projection port of the projection lens, and slides in the other direction so as to expose the projection port; and a detecting means 6 including a light emitting part 61 and a light receiving part 62, for detecting the opening/closing state of the lens cover 7 in accordance with the presence or absence of a luminous flux received by the light receiving part 62. The light emitting part 61 and the light receiving part 62 are provided so that the optical path of the luminous flux incident from the light emitting part 61 to the light receiving part 62 may cross the sliding direction of the lens cover 7. The lens cover 7 includes a shielding part 7B3 for shielding the luminous flux incident from the light emitting part 61 to the light receiving part 62. The shielding part 7B3 is formed with a prescribed width along the sliding direction of the lens cover 7. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
