| 摘要 |
<p>The device (10) has a camera (16) provided with an image sensor, and a convex central mirror (15) symmetrically positioned in front of the image sensor with respect to an optical axis of an objective lens (11) for forming an image on the image sensor. Two chromatic filters (14, 17) are positioned on two respective optical paths incident on the convex mirror, where each chromatic filter exhibits spectral transmission bands. Two side mirrors (13, 19) are placed on the optical paths and positioned in a symmetrical manner with respect to an axis of the image sensor.</p> |
