| 摘要 |
<p>An image displaying device (1) for projecting and displaying an image through a light beam includes a microphone (13) configured to detect sounds within an illuminated area (20) illuminated by the light beam that projects the image, and a level controlling portion (12) configured to limit a level of the light beam that projects the image, when a sound has been detected by the microphone (13).</p> |
