| 摘要 |
<p>In the present invention, a light source in a polarized-light emission device for optical alignment can be maintained easily and in a space-saving manner. This polarized-light emission device (1) for optical alignment includes a light-emission unit (10) provided with the following: a light source (2); and optical components, including a polarizer (4). The light-emission unit (10) is also provided with a light-source support guide (11) that can support the light source (2) at the following positions: a light-emission position (P1) above the optical components; and a maintenance position (P2) that is separated from the optical components in a scanning direction. When moving the light source (2) from the light-emission position (P1) to the maintenance position (P2), the light-source support guide (11) changes the orientation of the light source (2) such that the light-emission side thereof points in the aforementioned scanning direction.</p> |
